The fan coil is the central air conditioning system terminal device, its main advantages are as follows

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variable swirl diffuser – China Manufacturer
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http://www.foundation-hvac.com/key-variable-swirl-diffuser-709/

One, since the fan coil unit to the flexible adjustment. Fan coil for the 3-gear, and waterway system may be set according to the user at room temperature the situation and take automatic control of hot and cold water temperature control valve adjustment, so that each room can be adjusted independently at room temperature, to meet different use of air conditioning customers\\ needs, the room when people use a manual shutdown or automatic timed shutdown, and allows developers to avoid the time investment is too large, easy rolling development.
Second, the entire system partition is more easy to control, you can press toward the room, floor, purpose, use the time to be divided into several regions, sub-control according to different customer needs, thus avoiding the high winds Road system must focus on control of the irrational side of .
, Fan coil body is small, flexible layout, easy to install, occupy.

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Forklift and hydraulic system safety requirements

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skid steer rock buckets – China Manufacturer
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http://www.forklift-fork.com/key-skid-steer-rock-buckets-173/

One forklift device safety requirements
The door frame may not have the phenomenon of deformation and seam sealing off, rolling to the inside and outside the door frame clearance should be adjusted reasonably, and shall not be greater than l The. 5mm, wheel rotation should be flexible wheel and shaft should be free of cracks, defects. The amount of wear of the wheel groove shall not be greater than 10% of original size.
Two two lifting chain degree of tension should be uniform, not distorted, the end of the solid connection, the chain pitch shall not exceed 4% of its original length, it should replace the chain. Sprocket rotation should be flexible.
Fork frame may not have a serious distortion, weld sealing off phenomenon. The surface of the fork shall not crack, seam open welding phenomenon. Fork root angle not greater than 93 °, the thickness of not less than 90% of original size. Left and right fork tip height difference should not exceed 3% of the level of fork length. The positioning of the fork should be reliable, forks tied to the bearing surface, the positioning surface may not have obvious defects, and fork with the gap of the fork should not be too large, and move smoothly.
From 4 liter fuel tank and the door frame connected parts should be solid,skid steer attachment tilt cylinders and the door frame hinge of the frame should be secure, flexible, with the gap is not too large. The fuel tank should be well sealed, no cracks, smooth. Rated load, 10min gantries from Shen amount not greater than 20mm, the inclination is not greater than 0.5 °. Lifting speed at full load should not be less than half of the standard value.
(5) overhead guard, backrest shall be complete and effective.
Second, forklift hydraulic system safety requirements
Pipe joints of. Nights pressure system secure, no leakage, and other mechanical grinding touch, rubber hose shall not be aging, deterioration phenomenon.
Transmission parts in the hydraulic system at the rated load, rated speed range should not be creeping stagnation and obvious impulsive phenomena.
3 multi-valve shell cracks, leakage; performance should be good and reliable; sensitive safety valve, 25% overload should be able to fully open, adjust bolt nut should be fully robust. The accurate positioning of the operating handle, reliable, and not due to vibration and deflection.
Load curve, the hydraulic system nameplate should be complete and clear.

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Seven tricks of the identification used mini excavator equipment is good or bad

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forklift rotator attachment – China Manufacturer
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http://www.forklift-fork.com/key-forklift-rotator-attachment-162/

Very similar to the appearance and operation of mini excavators and other general-purpose excavator, when users want to buy two mobile phones, in many ways to measure, to avoid fooled.
Which the most important performance
Mini excavator first appeared in the mid-1980s, the device now has the characteristics of many of the older models do not have, so users need to know in advance they want to buy machines with which features and components.
Hydraulic servo control lever better than the old-fashioned joystick bulldozing plate sometimes is not the standard configuration; of course, the user may be looking for a device with hinged boom, it is easy to close to the buildings and auxiliary pipeline operations; zero tail swing is particularly important for the construction who need to work in a compact environment.
On the bucket and boom
Excavator is not always as a mining machinery, construction sometimes use them to piling or use them to the laying of pipes. Therefore, users need to pay attention to the situation of the bucket, to ensure the piling, crushing and running gear is no problem.
There is also an important part of the connecting pin of the bucket cylinder, bushings, be sure to check the tightness of these places. Many problems are arising due to the neglect of maintenance and inspection.
When users start the machine move the bucket, stick and arm after he may see the movement of the pin or cylinder, arm and bucket are not moving, this is because the pin and bushing portion of the loose caused.
Another key point is to look carefully at arm excavator connection part of the arm below the connection after excessive wear, and may result in the loss of the entire value of the equipment.
Oil spill means that there may be the entire oil contaminated
Check the hydraulic cylinder and tubing is very important. The best situation is that the traces of the surface of the hydraulic cylinder chrome no scratches, dents or oil spills. If the hydraulic oil leaking, may be the dust contamination of the hydraulic system.
Also to confirm the fuel tank wall is not damaged or dented. The gap between the cylinder and the cylinder wall is small, as long as a debris in the pipeline, it will lead to the fuel tank in operation due to wear and produce large amounts of metal debris, and residues to the hydraulic system.
Alert to the welding of car body
Look carefully at the the excavator welding traces left in the cracks as well as non-original manufacturer and these machines have been excessive use of.
There is also a good way to use a straight on the position of the boom and arm, to see if there is no dislocation or distorted.
Pay special attention to the extra steel plate repair. Two on the phone may have some scratches and dents, but the machine if there are too many patches may mean that this device has been used for a long time.
Rubber tracks and chassis
Mini excavator on rubber tracks with a large machine steel track it on the lawn and driveway. In many cases users will not check the steel track, close inspection of the wear of the rubber track.
Only to see the wear of the rubber track, but did not see the sprocket and the occasional round wear, check the rubber tracks on crack and edge wear to estimate their usage, just like to see the attention to the tire when the tire wear lines the same.
Due to the different use patterns and soil conditions, the working life of the rubber tracks are quite different. General point of view, the average life of 2000 hours or so. However, if the work in the rock or easy to wear, when the service life would halve; On the contrary, the operating life will be in a better environment doubling.
Users to check the track and the chassis, do not forget and then drive to check the oil level and cleanliness. This part is very easy to be ignored, and usually very little oil left. If the oil is already very low, and the entry of water or other things that will have more trouble.
Driving operational check
After the start of the engine warm-up, tilt the machine so that the side of the track alone to stand, followed by rotation of both sides of the caterpillar stand. Note how many times this kind of action can be completed within 30 seconds or 60 seconds, and then compared with other crawler.
Excavator crawler travel unit is a built-in flow meter, If they do not have the same traffic problems. The detection of another is driving the excavator to run 10 meters on level ground, If you are running a straight line, you can know its both sides of the walking device operating conditions as good as.
Also check the rotating ring gear and rotary bearings. Under normal circumstances, the upper smooth start rotation and the ability to accurately stop, only a small amount or no deviation. Mini excavators, rotary ring gear and slewing bearings should be the same machine as long as the life had any questions about this part of the Note.
Engine Cover
Open the engine cover and check the exhaust pipe smoking signs. Can pull out the dipstick and see if there is smoke. Smoke too much usually indicates the need to replace the piston rings, and may not be long before engine overhaul is necessary.
Check the air filter and all pipes and tubes folder.

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Vertical circular cylindrical worm reducer machine characteristics of the transmission mode

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crane gearbox – China Manufacturer
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Vertical arc cylindrical worm reducer is mainly used in chemical, construction, and light industries such as mixing equipment, which the use of the plane double enveloping worm gear speed reducer, (1) reducer transmission ratio can be flexibly adjusted; grade belt drive, changing the pulley diameter can be adjusted to the total transmission ratio. ⑵ screw lift belt narrow V-belt, high carrying capacity, with the root up to four, reducing the size of the structure. ⑶ worm wheel bearing span increases, to improve the output shaft of the stress condition and can eliminate the intermediate support on the link in the bracket, so that the machine height significantly reduced.
The square of the arc gear transmission features:
1) arc worm reducer tooth profile is concave-convex engagement, have a larger radius of curvature, and therefore has a high contact strength. Especially the sub-order dual-arc worm gear, the thickness of the tooth root bending strength of the tooth than a single arc gear improve.
2) the arc gear tooth parameters are designed with the flexibility to adjust, such as the radius of tooth profile, tooth height, tooth waist and teeth to be the thickness according to strength requirements and application requirements, and thus designed to meet the requirements of different application forms of gear transmission .
3) arc worm gear reducer drive gear transmission of a point, in the full load of work and you must to go through running-make point contact on the run together and bearing deformation, the local surface contact. Only after the worm gear can be fully running-arc has a higher carrying capacity and longer service life. During operation, the tooth profile of the relative sliding velocity is approximately equal to the tooth surface wear uniform, normal wear and tear of the tooth surface without prejudice to the tooth profile accuracy, and arc gear running-in process can play a pro in this research The role of the finishing.
4) arc tooth worm gear meshing, the contact area high rolling speed along the tooth width direction of the mobile, the mobile speed than the peripheral speed of the gear a lot of easy formation of elastohydrodynamic lubricant film, so that the friction between the tooth surface loss lower tooth wear reduces the transmission efficiency.
5) the end of the arc worm gear drive tooth profile is conjugate tooth profile, and the deep error of center distance changes in error and gnashing of teeth can affect the position of contact points of the tooth surface. When the error is too large, will destroy the normal mating, affect the carrying capacity of the gear pair. Therefore, processing and installation, to strictly ensure the installation precision grinding of teeth to try and center distance.
Worm Gear – cylindrical worm reducer – arc cylindrical worm reducer
The shape of the contact line is superior to the ordinary cylindrical worm gears, to form a film, the middle plane conjugate tooth profile is concave and convex tooth meshing, the transmission efficiency and carrying capacity were higher than normal cylindrical worm gears.
Transmission ratio of 5 to 100
Transmission power: to 1500KW.

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Oaks GDP series air handling units

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air handling unit system – China Manufacturer
Thank you for inquiry my air handling unit system, Tel: +86-512-68188280, Email: factory@found-hvac.com
http://www.foundation-hvac.com/Air-Handling-Unit/

Oaks GDP series air handling units to the end of the central air-conditioning, ceiling air handling units. Its function is to cool the air cooling and dehumidification drying, heating, isenthalpic humidification, filtration and purification as well as a new air unit. Apply to the air delivered to a certain distance through the duct, especially for small commercial office buildings and industrial applications of air conditioning works. The Oaks GDP series air handling units to provide nine kinds of models for customers to choose, for each model are a variety of pipe for customers to choose. Cooling capacity from 12KW to 260KW, the air volume of 2000m3 / h to 15000m3 / h. Oaks GDP series air handling units with direct-coupled centrifugal fan unit static pressure range of 92 ~ 187Pa. The unit features: 1, superior quality, reliable performance, selection software in the AUX-2004 Austrian Alex postdoctoral workstation research and development, applicable to the air handling units, cooling, hot water coil, steam coil design selection. Software in accordance with the actual coil processing equipment usage and thermal engineering law to write long-term repeated verification, correction, to ensure strict to ensure that the performance of the unit. Two. Easy to install, suitable for a variety of places unit a total of nine models (2000m3 / h ~ 15000m3 / h) for customers to choose, complete specifications; unit can be ceiling, floor installation, to avoid you worry not find a suitable installation location. Flexible application of guesthouses, hotels, office buildings and other places. 3. Double-efficient anti-corrosion unit using a the German Wa Nage electrostatic powder epoxy spray coating process into high-strength galvanized sheet electrostatic powder coating, high corrosion. 4. The specifications of the air volume is adjustable for a wider unit 2000m3 / h ~ 6000m3 / h can be three-speed control (optional) 5. Easy maintenance, quick and simple unit with a removable maintenance doors, to facilitate maintenance work. 6. Intelligent control, filling the intelligent control technology mechanical and electrical integration (optional) unit microcomputer intelligent control, easy temperature control, the enthalpy difference between the energy-saving control, with a differential pressure alarm and fault automatic protection a variety of functions. Customers to customize their own control system based on the actual control functions. 7. Air purification, health and environmental protection unit have to formaldehyde and other harmful gas purification function (optional).

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The car seat belt use to pay attention to the correct maintenance car battery

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automotive seat belts – China Manufacturer
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http://www.chinaseatbelt.com/key-automotive-seat-belts-7/

Forget to turn off the lights and automotive electrical
Parking stall, forgetting off the car lights, many new owners likely to commit minor errors. After a night of consumption, the battery at any time may not have electricity, will not start car. In such cases, under the conditions permit, you can try for the battery charge. If that does not, the battery may need to be replaced. Try not to use CDs, cigarette lighter, and other electrical equipment when the vehicle is not started, driving the process less of a variety of automotive electrical
Forgot to shut the air conditioning turn off before
Maintenance of the master pointed out that most of the owners used to do with air conditioning or air conditioning along with the vehicle is started automatically start, this will cause each time the vehicle ignition switch is open, air-conditioning system will automatically start, the consequences are a direct result of overloading of the vehicle instantaneous power high, and over time will cause the battery loss.
Correct habits, each time before reaching its destination, first turn off the A / C button, let the cold wind and a few minutes to dry within the air conditioning system to reduce the breeding of germs. And then before you turn off, turn off air conditioning. Each time after the car, and then start the air conditioning.
Idle listening to high-power audio
If your car\\ s sound system is modified, fitted with a powerful sound, so be wary. Maintenance of master, in the case of Not Working, idle listen to the sound of high-power also give the battery to bring a high load.
Frequent start the vehicle
Every time you start the engine, not more than 3 seconds. If the first failed to start, do not rush to start over. From the works of the car, then consecutive start motor will certainly cause excessive battery discharge damaged. Maintenance of the master recommended that the strike again when the time interval should be more than 5 seconds.
Predict the battery \"on strike\" precursor
Maintenance of master, generally near the end of life battery, the owner of driving they feel, for example, the car parked a few days to beat the fire, increased fuel consumption, cars burden feeling in the air conditioning in summer driving, the car Shen, increases fuel consumption obvious and so on. The owners of the battery life cycle of about two and a half years, routine maintenance should be detected battery, which can play a preventive role. Young Philippine
seatbelt.com/">seat belt use with stress
Car wearing a seatbelt, which is the driver know that common sense. Nevertheless, the survey found that seat belts and child safety seat grossly under-utilized.
Car collision or encountered an unexpected emergency brake will have a huge force of inertia, the second collision occurs the driver, passengers and the car steering wheel, windshield, seat back and other objects, can easily cause The crew of serious injury. Seat belts can occupants trapped in the seat, to prevent secondary collisions, reduce the degree of injury of the occupants.
Seat belts, although simple, but there are also many occupants can not be used correctly, that lead to accidents. In the use of seat belts should note the following:
Frequently check the status of the seat belt, if there is damage to the timely replacement. All fixed seat belt bolt in the seat next to the floor should be required to tighten the bolts around should be coated with sealant.
Three-waist belts should the Department as low as possible, the Department of the hip, not tied to the waist; shoulder belts can not be placed under his arm, Xiegua chest. The seat belt can only be a prohibited double share. Do not distort the use of seat belts.
Do not let the seat belt pressure on hard or fragile objects, such as, clothes, glasses, pens, or key; do not let the seat belt with a sharp bladed friction, so as not to damage the seat belt; Do not let the seat back is tilted too far , otherwise the seat belt will not be able to properly stretch and winding; seat when no one, you want to back to the seat belt retractor, buckle tongue to the impact on other objects in order to avoid the emergency brake.
Seat belts must be supporting the installation of the seat shall not disassemble. If the seat belt in use had to withstand a strong tensile load, even if no damage should also be replaced, and shall continue to use.

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Chinese loader market development status and trends analysis

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truck attachments – China Manufacturer
Thank you for inquiry my truck attachments, Tel:13989310707, E-mail: sales@steelmanattachment.com
http://www.forklift-fork.com/key-truck-attachments-187/

Wheel loaders in China is mainly the development of the early 1970s, ZL50 loader for leading products, quality continued to improve after years of development, has formed a separate product line and industry categories. Compared with other models of construction machinery, wheel loader bridge, boxes, pumps, valves and cylinders and other parts product support is relatively mature, has formed a relatively complete supporting system. Loaders wide range of applications, the entire market less affected by the national macro-control, according to the China Construction Machinery Industry Association statistics, in 2004, loader sales of 89,892 units, an increase of 31.4 percent, but sales profit rate of negative growth. dropped to 4.32 percent from 5.66 percent in 2003. Production by three quarters of 2005, the expected annual output of about 90,000 units in 2005, the industry profit margins will be further reduced to below 4%.
Loader production enterprises up to reach more than 130 enterprise specialized in producing more than 30 major manufacturers Liugong, Xiamen Engineering, Long workers, temporary workers, XCMG, Jiang Su Changlin, as workers and mountain workers , these manufacturers with long-term production loader experience, strong strength and good after-sales service to win market share. Which Liugong and Xiagong sales in 2004 were 14903 and 14217, the two together accounting for 32.4% of the total sales of the domestic market; million units on the production enterprises there are dragon workers, temporary workers and Xugong 3 . In addition to the above manufacturing enterprises, as workers, mountain workers, often three forest yield more than 5,000 units. This indicates that the capacity of our loader industry has reached a high level.
 China\\ s own brand of loader industry through 10 years of development, under the multinational strong brand surrounded, fought out an independent development path, and has grown firmly in control of the domestic 90% more than market share. Domestic loader market turnover in recent years has been accounting for China\\ s construction machinery industry total turnover of half of its industry position is very important. Domestic loader products for its performance advantages, has already begun on the international market reveal its head and feet, showing a good momentum of development.
Sectors of the economy of our country loader
Loader manufacturers have a strong regional focus
Xiagong leading enterprises in Fujian, Xiamen, Quanzhou, Jinjiang and Sanming base, the formation of Fujian Longyan Construction Machinery (Group) Co., Ltd., China Infrastructure Machinery Holdings Limited, Fuqing longxing Project Machinery Manufacturing Co., Ltd. Fujian Jinjiang Engineering Machinery Factory, Xiamen Engineering Machinery Co., Ltd. Xinyu, Xiamen City, loaders and Quanzhou Jiande Group companies, a number of loaders manufacturers.
Shandong Linyi, Shandong Engineering Machinery Co., Ltd. Shandong SEM Machinery Co., Ltd., the Shandong Mengling Construction Machinery Co., Ltd. Shandong Germany Machinery Co., Ltd. and Yantai Construction Machinery Co., Ltd., manufacturers, in addition to, as well as in recent years emerging Shandong Foton Heavy Industries Co., Ltd. and Shandong Province Thailand Anlong Tai Machinery Co., Ltd..
Jiangsu Xuzhou Construction Machinery Group representatives Changlin Co., Ltd. and Nanjing South Mountain Machinery Co., Ltd. manufacturers.
Guangxi Guangxi Liugong Machinery Co., Ltd., represented by the loader manufacturing enterprises.
Production capacity in the form to the increasing diversification of
From the loader industry forms of production organization, the major manufacturers in efforts to adopt a variety of ways to expand production capacity, such as the use of the corporate city back into the park or a favorable opportunity to withdraw from the market into the rural funds from various sources to relocate comprehensive product upgrade and technological innovation, and expand the plant size, update processing equipment, improve product quality and perfect management mode, thus achieving the capacity to greatly improve. Industrial Park, a project of the temporary workers such as the Lingong total investment of more than 3 billion yuan has been completed in 2005, its annual production capacity increased to 20,000 units.
Other Xiagong into engineering, industrial enterprises also used this model to enhance its production capacity and technical level. The second way is the existing enterprises to expand production capacity by an adequate technical innovation, the industry is a fully competitive market in recent years, the State has not been special support all enterprises basically rely on self-accumulation capacity can improve. The third way is the loader manufacturers of low-cost, set up new enterprises in the domestic market demand is more concentrated areas in order to expand its production capacity and market share, such as Long\\ s work in Shanghai\\ s Songjiang, Liugong in Jiangsu Zhenjiang Jin workers in Jinjiang, Fujian and other places have set up production bases, the occupation of the local market by expanding production capacity and radiation surrounding the market. The fourth way is on the scale of the supporting enterprises to enter the loader industry, such as Yuchai Yuchai Engineering Machinery Co., Ltd. was established in 2004, officially entered the loader industry. Fifth ways in supporting parts in a more adequate and more convenient source of technology areas emerging more loaders private enterprises, such as the Shandong Qingzhou emergence of the five to six annual output of about 200 loaders private enterprise, in addition to developed in recent years, Tai\\ an, Shandong the Longtai cloud Yu, a rising star; the last part of the original loader manufacturing enterprises to switch or bankruptcy and closure, restructuring and reorganizing, especially the new look to re-enter the loader industry such as Jilin Siping Huayin bankruptcy of private enterprises to buy and set up a re-manufacture of loader the Jilin Heng industry companies. In addition, the multinational company of the internationally renowned engineering machinery spy on the Chinese loader market for a long time, some large foreign enterprises to accelerate the pace of China loader industry, such as Japan Kobelco into the work Group as a whole composed of Chengdu Kobelco Construction Machinery (Group ) Limited, the holding reached by the Kobelco and within two years from 2003. The most typical is the vanguard of U.S. Caterpillar, the world construction machinery, with its strong economic strength, to acquire the loader manufacturing enterprises to enter China Loader Industry to 2006 Caterpillar will own all the shares of the acquired businesses .
Domestic loader industry in recent years showing the characteristics of
Loader\\ s engine, transmission and drive bridges supporting the development of the industry is relatively mature, it is easy to procurement; the same time, the wheel loader is almost completely open, rare in patent and other intellectual property barriers, and other factors led to lower barriers to entry of the host production the difficulty of small and medium-sized investors to participate in the loader production is greatly reduced.
Fully competitive market environment, the major loader manufacturers, after years of development, the wings gradually abundance, based on expansion of production capacity, financing capacity and strength is also significantly enhanced. China Infrastructure Machinery Holdings Limited in Hong Kong Stock Exchange in November 2005 listed on this point, the loader manufacturers have all been to achieve market and capital operation has entered a new stage of development, sustainable development of enterprises laid a solid foundation.
Excessive number of domestic loader machine manufacturers, in addition to a few companies have economies of scale, the vast majority of enterprise output in thousands of units, some only an annual output of 200 to 300 units of capacity. The development trend of China Loader Industry, the reorganization of resources as the main direction of business integration is inevitable, the existing 100 small manufacturing enterprises will face a merger, conversion or closure of, including capacity less than 2,000 enterprises the survival of the enterprise will be a serious challenge.
From the point of view of the import market, the import loader Most large tonnage-based Caterpillar, Komatsu, Volvo and other company\\ s products. According to the national customs statistics, in 2005? September China\\ s import loader 270 over the same period in 2004 decreased by 17%, the average price fell by 14%. Difficult to see that the import loader product prices on a downward trend.
Competitive situation
At present, the total capacity of the loader industry in China 37 loader enterprises reached more than 140,000 units, the other dozens of companies averaged 200 to 300 plus entrants such as Foton Heavy Industries, preliminary estimates, 2006 loaders total domestic production capacity will exceed 20 million units, the market demand of about 90,000 to 100,000 units, is expected to be about 50% of idle capacity, serious excess capacity, market competition will become fiercer.
Competition in the form of the low price war still exists, the price reduction as the primary means of vying for market share. On the one hand, due to the increase of the host manufacturing companies, especially large enterprises to join a strong competitive strength; the other hand, the new increase in production capacity are basically low-level duplicated, and not technically a new breakthrough. These are exacerbated by the brutal competition.
Due to the low level of profitability, the industry as a whole benefits fell more obvious, which is largely restricted the development of our entire loader industry to a high level, high-tech direction, industry lurks the survival and development of the crisis. In recent years, domestic loader manufacturing enterprises in addition to Xiagong, Liugong, Long workers, temporary workers and Xugong such as strong corporate profit margins remain at a certain level, other small and medium-sized loader manufacturing enterprises, mostly in the profit or loss of status.
Foreign enterprises will further increase the intensity of the White loader industry in China. The world\\ s leading business groups have entered the Chinese construction machinery industry, entered the United States Carlyle XCMG, Caterpillar White Mountain work as a starting point, setting off a new round of mergers and acquisitions boom of the construction machinery industry. Caterpillar recently with domestic loader leading enterprises such as the backbone of the building, Liu Gong and other manufacturers were in close contact with these multinational and gradually open the loader market with its abundant capital and technical strength. Can be predicted that the \"Eleventh Five\" In the first few years, the development of China\\ s construction machinery industry to loaders enterprise as representative of the competitive structure will change the pattern of China\\ s domestic loader industry will have a significant impact.
In short, the total production and sales of the loader market in China in the \"Eleventh Five-Year\" period, the basic \"15\" late at the same level, but the product mix will be some changes. Expected to be Chinese loader market for 2006 will show the new competitive landscape, and this trend will intensify competition in the domestic market, the loader market a few years ago a \"blowout\" type of growth trend will end in 2006, the market will enter a rational regression stage, the domestic market demand to enter the stage of steady growth in total market demand of about 90,000 units, the technological content of products, improve the level of product quality and after-sales service system and improvement of the export market development will be the key to competition in the market.
Enhance the development path of China\\ s loader own brand
The face of fierce market competition, China\\ s loader brand development go? This is a real problem before us the right to face.
Production enterprise level analysis
First, the hard skills, starting from the product quality, increase the input into technological innovation and quality management system; qualified enterprises and supporting enterprises research, the positive feedback of market information, common improvements to improve; to improve the quality of the product\\ s appearance , reliability and cost-effective, quality products to win the trust of customers.
Should strengthen investment and management of technology development funds to establish a reasonable development route and mode, and take full advantage of enterprises, research institutes, and social power of the parties, based on existing technology, and effectively in the original introduction of the product technology , increase the intensity of self-development and innovation, and lay a solid foundation for long-term development.
Should actively adjust the management ideas, to strengthen the construction of a modern enterprise system and modern management concepts, updating the old mode of management and production methods, the use of information technology means in order to cultivate the moral and professional managers who focus from management to the business layer and improve the level of unity at all levels of technical layer.
Fourth, expand exports, domestic loader products has been the formation of scale and advantages, the use of the relevant preferential policies of the State, through a variety of ways to increase exports, including the whole sets of export, engineering contracting market export of electromechanical products and the establishment of assembly in a foreign country or sales base, and create a new situation of China\\ s own brand loader exports. In addition, to cope with the effects of foreign technical barriers, domestic loader manufacturing enterprises should actively participate in the certification of international standards, accession to the WTO, the international standard system of mutual recognition system, early action, for the expansion of export volume and export countries number to make a positive preparedness.
From the government level
In support of independent research and development, the Government should be doing useful work, the transformation of government functions as the focus of the deepening of reform. Start from the reform, transformation of government functions, administration, and enable the Government to really take on the economic regulation, market supervision, public services, social management functions. Under conditions of market economy, not because the accession to the WTO, in full accordance with the developed countries\\ markets operating mechanism of the transformation of government functions, not only emphasizes the government\\ s macro-control function, to the neglect of the industry as a whole, monitoring, coordination and support functions.
First, the loader manufacturing enterprises in China as early as the 1980s have all been placed under the place, the localization of management in the decades of competition in the market, and gradually grow and formed one of the few independent brands of construction machinery industry and relatively strong production capacity. Name of service under the banner of the local economy but in the new period of development of individual local governments, acting corporate affairs, the implementation of the investment, say, by their very nature is also beyond reproach, but in the conditions of market economy, a variety of restructuring should be market-oriented, enterprises as the mainstay, especially involving foreign mergers, restructuring should be treated, for thorough consideration. Fully absorbed by the parties, especially the views of business, think twice, to avoid the acquisition of foreign multinational companies to a new round of industry-wide competition, in order to ensure the sound development of China\\ s self-loader manufacturing enterprises products.
Second, the Government should strengthen coordination and guidance, policy, economic leverage means of regulation, to regulate and guide the production, sales, service and technology research and development, prompting the loader manufacturing enterprises in China fully competitive in the market environment conditions step by step to achieve the combination of domestic enterprises, the formation of a host of production companies and supporting companies complement each other in the production of collaborative relationships.
Of course, the relevant government departments should increase the technical difficulty, and high value-added products of independent efforts to support, especially from the capital to be supported. Currently, the state authorities has also been the localization of the major equipment product focus on research and investment planning, the product of independent development of large tonnage loader is one of the special, fully demonstrates the great importance of the relevant government departments of the industry , especially the importance of self-developed products. Domestic loader manufacturing enterprises should act early to do the preparatory work related product development.
Small and medium-sized loader manufacturing enterprises with its low price as the primary means of competition in the market, this means to quickly capture the market very effective within a short period of time, but the price is lower reduction means that corporate profits can not increase in R & D investment in service and other aspects, there is no independent core technology and good potential for development, but stifled the long-term development.
Domestic loader market matures, users are increasingly high requirements on product performance, quality and service. Chinese loader market competition has been the transition from initial production, product, quality and price competition to brand competition. With the development of the market, after-sales service will become the main bargaining chip of the competition. Domestic loader market demand for wide distribution, the regional demand is also significantly different between the rich layers of user needs, the annual production of smaller businesses did not have the strength to complete after-sales service network, only to become a regional supplier market position will be further reduced.
The future development of environment
Macro market
In 2006, the \"Eleventh Five-Year Plan\" will be in full swing, after the strategic adjustment and transformation of the \"15\" late, prompting several major direct factor of the rapid growth of loaders in China will further promote the sustained, steady and healthy development of the industry.
\"Eleventh Five-Year\" period of national and local governments are clearly in the plan should increase investment in infrastructure construction, which will further stimulate the market for earthwork construction machinery demand. Loaders cheap, compared to the same tonnage excavator products price is much lower; loader easy maintenance, simple operation, adequate accessories, many available excavators, loaders available more inclined to buy a loader. A substantial increase of the mineral, energy and hydropower construction projects, but also to the loader to provide a new arena.
Loader industry in China in recent years, the development of \"15\" after half of the stable development trend will inevitably lead to the \"Eleventh Five\" early market further to return to the rational; the domestic market, the loader has a larger population on the load the upgrading of the PC market is a constraint; In addition, as to continuously enhance the economic strength of the domestic user, the excavator will be diverted to the loader part of the market. Therefore, the total market demand will decline, production companies can not be blindly optimistic.
Product structure
From the product structure, our loader models are mainly concentrated in the class 3t (including 3.5t) 4t and 5t three kinds of models to the 2005 5t-level models of market share has reached 97% or more. 5t-level model especially in the most concentrated, the market share of 60% (mainly to seize the market share of the 4t level minicomputer); 3t-class products market share hovering around 30 percent, have not changed much ; 6t-level or above, especially the large tonnage of more than 8t-level models, few mature products, mainly the use of imported or joint ventures, wholly-owned enterprises.
In addition, according to current market conditions, 3 ~ 5t class loader in the next few years will continue to be the main models of the market as a mature product. 6 to 10t class products were only few companies Liugong, Xiamen Engineering, XCMG and temporary workers such as molding products and technologies, if these enterprises to achieve a breakthrough in several areas of technology, cost, price and reliability. market prospects. 3t-class small loaders in large and medium-sized cities in the consumer demand is rising, but recently there can be a large market space. Europe and the United States and other developed countries, small loaders accounted for the proportion of the loaders total sales of 50 percent to 60 percent, China is only 3% to 5%; With the further development of urbanization and the overall level of economic development, the next mini loader will become a major growth point for the industry.
Import and export markets
According to the China Construction Machinery Industry Association statistics, the export enterprises of the wheel loader 15 to 20, but exports are small, the sales market is fragmented and is not fixed, in a passive position, only a few companies have a record of continuous export products are mainly exported Southeast Asia, Central Asia, Africa and South America.
 Nevertheless, in recent years, China\\ s exports Loader, or the rise year-on-year growth rate of exports from 2001 to 2004 followed by 90.2%, 16.0%, 18.7% and 56.4%. Is expected to export an increase of about 40%, the export volume will reach 15 million units in 2005. Export growth in the steady development, its potential can not be discounted.
But we should clearly recognize that domestic loader export product specifications are also medium and small tonnage, 5t grade and 5t loader has a cost advantage. 6t and 8t models of the domestic like dependence on imports, in the international market, the large tonnage loader products simply can not compete with foreign products. According to statistics, regardless of the number of export units or the amount of exports and domestic market are negligible compared to. It can be said that the domestic loader is still outside the threshold of the international market, not to truly enter into the international circulation.

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Air handling units – Ceiling Series

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air conditioning diffuser – China Manufacturer
Thank you for inquiry my air conditioning diffuser, Tel: +86-512-68188280, Email: factory@found-hvac.com
http://www.foundation-hvac.com/key-air-conditioning-diffusers-677/

Mixing section: In the single-fan system for fresh air and return air mixed with the new air valve and return valve, manual, automatic optional, specify when ordering. , Just set it back to the air valve in the dual-fan system.
The middle segment: with closed doors, maintenance personnel can enter the unit maintenance.
Thick, efficiency filter section: for rough air (in) efficiency filters, equipped with a coarse (in) efficiency filter, a pressure box pressed, good sealing performance, easy to replace.
Table cold retaining segment: for cooling with dry air. The cold source of the cold section of the table have two choices: chilled water or refrigerant direct evaporation, freezing cold water sources are frozen stations to provide low-temperature chilled water to the surface cooler; direct evaporative condensing unit (air-cooled or water-cooled) to the unit to provide a low temperature refrigerant. Surface cooler after the installation of the retaining plate, can be separated from the water droplets in the air
Heating section: for heating air with steam heating, hot water heating and electric heating three kinds of heat source way for users to choose. Heater row deep 2,4 rows of two kinds. Available in Table 1-2 hot water heating and steam heating and heat, electric heating with high efficiency heating elements can be divided into a block or three-block, the total power of electric heating according to user needs.
Humidification section: for air humidification. Using dry steam humidification or high-pressure water spray humidification or electrode humidifier.
Shunt segment: for fresh air and a return air mixing and ventilation.
Current segment: internal with low resistance to air distribution plates to ensure that the unit within the air flow evenly distributed within the cross-section to minimize the impact of air flow heterogeneity on the air filters.
The muffler paragraph: chip resistive muffler or metal microplate muffler can reduce unit noise.
Sent back to the fan section: for conveying air, which consists of a double inlet centrifugal fan, the wind and the level of the wind two.
Heat recovery section: collecting the exhaust of the air conditioning system in the cold (hot) the amount of fresh air in the cooling (heating) system, can achieve substantial savings in energy, reduce operating costs.

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Common fault arc worm gear reducer

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speed variator – China Manufacturer
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Arc worm gear reducer hollow shaft type can obtain very low output speed, is a helical gears and worm combination of levels, with high efficiency, small vibration, noise, low power consumption. This paper focuses on the process common problems with the analysis of the reducer, the proposed solution. Keywords: arc tooth worm gear reducer; problem analysis; assembly quality; installation; maintenance CLC: first lubrication 132.46document code: B worm gear reducer is a compact structure, the transmission ratio, under certain conditions, mechanical Transmission and self-locking function. Hollow shaft worm gear reducer not only has the above characteristics, easy to install, reasonable structure, has been more widely used. It is in the worm gear speed reducer input add a helical gear reducer, multi-stage reducer can be very low output speed higher than the single-stage worm reducer efficiency, small vibration, low noise and energy consumption. A common problem and reasons1 reducer heating and oil. To improve efficiency, the worm gear is commonly used non-ferrous metal worm, the worm is a kind of hard. Due to sliding friction drive, the operation will generate more heat, so the difference in thermal expansion between the reducer parts and seals, resulting in the mating surface to form a gap, the lubricating oil temperature and thinning, and prone to leaks. There are four reasons for this situation, one material unreasonable; is meshing friction surface quality is poor; the choice of lubricant additives is wrong; four poor assembly quality and use environment. 2 gear wear. The Worm tin bronze, matching material 45steel hardening hrc4555, or surface to hardening hrc5055after worm grinder grinding roughness ra0.8m. The reducer normal operation wear very slowly, some reducer can use more than 10 years. If the wear is faster, this is the need to consider the choice is correct, whether the overload operation, and the worm gear materials, assembly, quality or use of the environment and other reasons. Bevel gear wear. Generally occurs in a vertically mounted speed reducer, the main types of lubricants and oil. Mounted vertically, likely to cause lack of lubrication arc Tooth Worm Gear stops running, the motor and deceleration of the motor drive gear oil gear loss, due to lack of lubrication and protection. Starter gear reducer, due to the lack of effective lubrication lead to mechanical wear or damage 4worm bearing damage. When a fault occurs, even if the reduction box and good sealing effect, often found in Gear oil is emulsified, bearing rust, corrosion, damage. This is due to the reducer after running for some time, temperature and cooling of the gear oil, condensate and water mixed. Of course, it is closely related to and bearing quality and assembly process. 2, Wu Qiaoxin GGV reducer reducer Machinery Co., Ltd. specializing in the production of arc tooth worm reducer to solve method1to ensure assembly quality. The Wuqiao Xin Ji source of worm speed reducer factory arc worm gear reducer can be purchased or special tools, demolition and installation of the reducer fittings, try to avoid using a hammer and other tools to percussion; change gears, worm gear, try to use the original accessories and replacement in pairs; pay attention to the output shaft assembly tolerance; protect the hollow shaft wear, anti-adhesive or red lead oil to prevent rust or difficult to remove dirt, repair.2selection, lubricants and additives in the region. Worm gear speed reducer is generally used on220 # gear oil, heavy duty, start frequently, the use of the less well reducer, use some lubricant additives, reducer to stop running gear oil is still attached to the gear surface, forming a protective film to prevent the heavy-duty, low speed, high torque and start-metal contact. Additives containing a ring modulator and leak-proof agent, so that the seals soft and flexible, and effective in reducing the leakage of lubricating oil. 3 reducer installation location of choice. The location allows, try not to use a vertical installation. Vertical installation, to add more than the level of lubricant to install, easy cause the reducer heat and oil.4establishment of lubrication and maintenance systems. According to the principles of lubrication work, \"five\", reducer maintenance
Each reducer are responsible for regularly checked and found a significant rise in temperature, 40 ° C or oil temperature higher than 80 ° C, the decline in the quality of oil or oil, copper, and an abnormal noise phenomenon, worm gear reducer should be immediately stop the use, timely maintenance, troubleshooting, and replacement of oil. Circular Cylinder worm reducer

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excavator hydraulic fluid selection and maintenance of hydraulic systems

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hydraulic hose and fittings – China Manufacturer
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   A reasonable selection of hydraulic oil

  a, determine the hydraulic oil viscosity hydraulic oil viscosity, consider the premise of the working temperature and efficiency of the hydraulic circuit, hydraulic oil viscosity (for pump and motor components) in the optimal range (16-36×10-6mm2 / s ); and environmental minimum temperature corresponding to the short-term cold start viscosity & le1000X10-6mm2 / s; and corresponds to a short period of time to allow the highest leakage oil temperature 90 ° C viscosity & ge10X10-6mm2 / s.

    b, the index of the viscosity index (VI) is more directly reflects the nature of the oil viscosity with temperature change (ie viscosity-temperature characteristics of the oil), oil of high viscosity index, indicating that the oil viscosity changes with temperature The change to a lesser extent; larger. Well-known foreign manufacturers (such as Mobil, Shell, etc.), anti-wear hydraulic oil viscosity index are VI ge110, the domestic anti-wear hydraulic oil viscosity index VI = 95 or so. Foreign production of high viscosity index hydraulic oil (HV) are multi-grade engine oil viscosity index VI> 140. This is for the use of large-scale imports of hydraulic excavators and domestic hydraulic oil (or engine oil, hydraulic oil) the user shall pay special attention to. Viscosity index reduce shrink will allow oil to adapt to the ambient temperature range, unless the use of non-oil manufacturers should be query-related information, and shall make the appropriate adjustments to the scope of use of the oil, if necessary, should also change the settings of the equipment ( such as extreme temperatures, etc.).
 
     Other comprehensive performance

   Higher working pressure due to the large hydraulic excavator hydraulic system (& ge32MPa), allow the oil temperature of hydraulic oil of the highest high (90 ° C or so), so in order to ensure that the hydraulic system in the normal drain intervals. requires oil lubrication system selected, oxidation stability, abrasion, rust and corrosion, anti-emulsification, anti-foaming properties, shear the Cean qualitative as well as extreme pressure overload has good quality.

    a good hydraulic oil cooling system

    For large hydraulic excavator hydraulic oil cooling system (more precisely, the hydraulic oil temperature control system) to improve, although the manufacturers specific differences in the way, but the basic idea is the same, both the hydraulic oil temperature balance in continuous operation in the ideal range, but also make the hydraulic system to work in cold, quickly heating oil to normal operating temperature range (up to). Use a qualified hydraulic oil, hydraulic oil overheating check the temperature control system for hydraulic oil cooling steps are as follows:

  b, the hydraulic oil cooler have dirt clogging, resulting in decreased cooling efficiency, if necessary, cleaning the radiator. Detect the fan speed, the actual working pressure under extreme conditions to determine the hydraulic parts of the circuit is faulty, the oil temperature sensor or control circuit is working properly. The fan speed and system pressure should be for the maximum; Otherwise, the corresponding parameters of the response system to adjust or replace the damaged components.

c, the system checks of the hydraulic parameters

   At present, a large hydraulic excavator pump control There are two main ways: with pressure drying function (CUT-OFF function) of the limit load adjustment (GLR) and load sensing to regulate the manner of (LS). CUT-OFF function of, when system pressure reaches the setting value, the swash plate angle of the variable displacement pump is reduced, so that the pump can only remain in the residual flow conditions required to maintain the pressure, in order to avoid the pressure relief valve overflow produce overheating. To accomplish this, the system parameters match to CUT-OFF valve setting value is less than the setting value of the primary pressure valve in the circuit according to the technical requirements; Otherwise, the primary pressure valve is opened will cause overflow overheating. The same time, the secondary check valve work is normal, this work must be in strict accordance with the technical requirements to deal with system-related parameters, if necessary, recovery adjustment.

  d to exclude non-normal within the vent

  Mainly refers to cause the direction of the valve, pressure valve card bite caused by abnormal drain system hydraulic oil contaminated. Check method: measuring pressure, check the function, or to listen to whether there is abnormal noise (valve port closed lax \"cost-cutting erosion sound\") or touch to check whether the temperature is local too high.

    e, to prevent component volumetric efficiency decreased

  Non-normal wear and tear and normal wear and tear, should pay attention to. The former may occur within a very short time, check the quality of the oil and combine the function of the system is good or bad (such as the implementation of the component movements are normal, speed, etc.) to judge; the latter should follow certain rules, should be investigation, to take timely measures.

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