First, the development of small bulldozers
In addition to the construction of highways requiring large and medium horsepower bulldozers, the construction of high-grade roads and the construction of county and township road networks and the construction of water conservancy projects and environmental protection projects are bound to create large-scale individual constructors. In this way, the demand for small bulldozers (below 100 horsepower) is bound to increase. At the same time, China's built expressways and high-grade highways have gradually entered the maintenance period. With the economic development of the eastern coastal areas and the improvement of people's living standards, small bulldozers will gradually become a tool for people to replace manual labor. This is where the market for small bulldozers is.
Compared with the North American, Western European and Japanese markets, China's small bulldozer market has a considerable gap in terms of sales volume and the proportion of small bulldozers and heavy bulldozers. The bulldozer industry must take this opportunity to meet the needs of this new market. According to the relevant magazines, the minicomputer market has entered a growth period. It will enter the late growth period and the early maturity period before and after 2008-2012, and enter the maturity period around 2020.
Therefore, the relevant enterprises in the bulldozer industry should focus on the strategic perspective and must not neglect the future market of small products. However, the development of small construction machinery products in developing countries such as China must be positioned. Different technologies should be used to solve the problem of positioning accuracy for different user groups. Low-end products that meet the vast rural market in developed regions should be developed first. And high-end products should consider the needs of future users.
Second, as soon as possible to improve and solve the key technology to adapt to the operation of the western plateau
1. Adopt power recovery type supercharging technology. Due to the general naturally aspirated engine, the output power is reduced by 8-12% for every 1000m increase in altitude. If the altitude of the whole machine reaches 4000m, its output power is only about 55% in the plain area. Therefore, the bulldozer used in the construction of the western plateau must adopt this power recovery type supercharging technology, so that when the diesel engine is used in the plateau, its output power and economic indicators and thermal load indicators are restored to the original low altitude area in the east. Level. At present, the diesel engine supporting manufacturers of the national bulldozers, such as Shanghai Diesel Engine Factory, Weifang Diesel Engine Factory and Chongqing Cummins Diesel Engine Company, have done a lot of work and have basically met the market demand.
2. Heat balance technology. Construction machinery should be constructed in the high-pressure area of ​​the west to solve the cooling problem of the hydraulic system. It is necessary to solve the problem of the increase of the heat load caused by the supercharging of the diesel engine, and to solve the higher temperature rise of the transmission cooling system caused by the lowering of the plateau heat dissipation capacity than the low altitude region in the east. In the calculation of heat balance, factors such as cooling air volume, air gravity, ambient temperature difference, and heat dissipation capacity of the radiator should be considered.
3. Application of sand control technology. Due to the large wind and sand in the western region, if a general air filter is used, it is easy to cause the air filter to be clogged or insufficiently filtered, and damage the components of the diesel engine. At present, each diesel engine manufacturer generally uses a three-stage filter or a four-stage filter to solve this problem.
4. Self-rescue protective equipment and equipment configuration. Due to the inconvenient transportation in the western plateau, people are sparsely populated. Therefore, the machine should be fitted with a hydraulic winch so that it can be towed out when it is caught in a bunker or swamp. At the same time, due to the large temperature difference and large wind and sand in the western region, the cab should have improved sealing performance and equipped with air-conditioning and air-conditioning. The cab should be equipped with the necessary living facilities as well as edible water and food storage cabinets. It should even be equipped with a global positioning system and a small oxygen plant.
In addition to the construction of highways requiring large and medium horsepower bulldozers, the construction of high-grade roads and the construction of county and township road networks and the construction of water conservancy projects and environmental protection projects are bound to create large-scale individual constructors. In this way, the demand for small bulldozers (below 100 horsepower) is bound to increase. At the same time, China's built expressways and high-grade highways have gradually entered the maintenance period. With the economic development of the eastern coastal areas and the improvement of people's living standards, small bulldozers will gradually become a tool for people to replace manual labor. This is where the market for small bulldozers is.
Compared with the North American, Western European and Japanese markets, China's small bulldozer market has a considerable gap in terms of sales volume and the proportion of small bulldozers and heavy bulldozers. The bulldozer industry must take this opportunity to meet the needs of this new market. According to the relevant magazines, the minicomputer market has entered a growth period. It will enter the late growth period and the early maturity period before and after 2008-2012, and enter the maturity period around 2020.
Therefore, the relevant enterprises in the bulldozer industry should focus on the strategic perspective and must not neglect the future market of small products. However, the development of small construction machinery products in developing countries such as China must be positioned. Different technologies should be used to solve the problem of positioning accuracy for different user groups. Low-end products that meet the vast rural market in developed regions should be developed first. And high-end products should consider the needs of future users.
Second, as soon as possible to improve and solve the key technology to adapt to the operation of the western plateau
1. Adopt power recovery type supercharging technology. Due to the general naturally aspirated engine, the output power is reduced by 8-12% for every 1000m increase in altitude. If the altitude of the whole machine reaches 4000m, its output power is only about 55% in the plain area. Therefore, the bulldozer used in the construction of the western plateau must adopt this power recovery type supercharging technology, so that when the diesel engine is used in the plateau, its output power and economic indicators and thermal load indicators are restored to the original low altitude area in the east. Level. At present, the diesel engine supporting manufacturers of the national bulldozers, such as Shanghai Diesel Engine Factory, Weifang Diesel Engine Factory and Chongqing Cummins Diesel Engine Company, have done a lot of work and have basically met the market demand.
2. Heat balance technology. Construction machinery should be constructed in the high-pressure area of ​​the west to solve the cooling problem of the hydraulic system. It is necessary to solve the problem of the increase of the heat load caused by the supercharging of the diesel engine, and to solve the higher temperature rise of the transmission cooling system caused by the lowering of the plateau heat dissipation capacity than the low altitude region in the east. In the calculation of heat balance, factors such as cooling air volume, air gravity, ambient temperature difference, and heat dissipation capacity of the radiator should be considered.
3. Application of sand control technology. Due to the large wind and sand in the western region, if a general air filter is used, it is easy to cause the air filter to be clogged or insufficiently filtered, and damage the components of the diesel engine. At present, each diesel engine manufacturer generally uses a three-stage filter or a four-stage filter to solve this problem.
4. Self-rescue protective equipment and equipment configuration. Due to the inconvenient transportation in the western plateau, people are sparsely populated. Therefore, the machine should be fitted with a hydraulic winch so that it can be towed out when it is caught in a bunker or swamp. At the same time, due to the large temperature difference and large wind and sand in the western region, the cab should have improved sealing performance and equipped with air-conditioning and air-conditioning. The cab should be equipped with the necessary living facilities as well as edible water and food storage cabinets. It should even be equipped with a global positioning system and a small oxygen plant.
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shandong Herui Mechanical Co., Ltd , https://www.heruihorsefloat.com