The type of transmission of the loader and the use of the speed change device.
In terms of transmission type, loader in China can be roughly divided into three types, namely, hydraulic mechanical transmission loader, mechanical transmission loader and fully hydraulic transmission loader. During this period, hydraulic mechanical transmission loaders accounted for a large proportion.
1. Hydraulic mechanical transmission loader:
The hydraulic mechanical transmission system is now a common loader transmission system, and its transmission device is composed of a hydraulic torque converter and a gearbox.
This system has the ability to smoothly insert loader into the stockpile, actively shift the gear, will not stop the engine due to overload, can alleviate the impact of the transmission system, operate smoothly, and work reliably. The main defect is that the power loss is large, the transmission power is low, the cost is high, the structure is messy, and the repair is not convenient. Its shifting devices are primarily hydraulic torch converters and power shift transmissions.
loader repair
Hydromechanical drive wheeled loader is now dominant in the country. loader with bucket capacity of 0.5-3.5m3, loader with an additional load capacity in the range of 1 ~ 7t is used throughout the system . Such as ZL10, 15, 20, 25, 30, 50, 70, Z1 160 models, etc. more than 10 models and more than 20 variants The combination of torque converter and gearbox is also the most common combination of transmission devices in loader in China.
2. Mechanical transmission loader:
Mechanical transmission wheel type loader generally directly selects the transmission system of automobile or tractor, that is, the combination of clutch and transmission.
In China, it is only used for loader with bucket capacity below 0.5m?. It has the advantages of low cost, high transmission power, being able to be towed, and easy to repair. The main defects are messy and laborious operation, and low clutch and transmission life.
3. Full hydraulic transmission loader:
loader with full hydraulic drive. Its power transmission system is composed of hydraulic pump, hydraulic pipeline, hydraulic control valve and hydraulic motor. Its variable speed system is hydraulically controlled to make it more stable. It can steplessly shift within a certain range, simplify the transmission system, and reduce the weight of the whole machine.
At present, China only starts to choose the structure type of full hydraulic transmission on small-power loaders, but with the development of hydraulic technology, the quality of hydraulic components continues to improve and the cost continues to decline. Select full hydraulic transmission.
