When there is a fault, it is necessary to make full use of the monitoring system of the equipment itself according to the characteristics of different models, analyze the specific problems and master the effective fault analysis methods. The principle of external to internal, easy to difficult and simple to complex shall be followed in the diagnosis. The order of fault diagnosis of hydraulic transmission system of excavator is as follows:
1. inquire about the data, including the excavator operation manual, operation and maintenance records, etc;
2. understand the working condition of equipment before and after the failure and external inspection
3. test run to observe the fault phenomenon, on-board instrument, etc
4. internal system inspection
5. instrument inspection system parameters, including flow rate, temperature, etc
6. logic analysis and judgment
7. adjustment, disassembly, inspection and repair
8. commissioning
9. fault summary record
There are many kinds of excavator faults. In case of complex comprehensive faults, the failure phenomenon should be analyzed carefully and the possible causes shall be eliminated one by one.
The reason why hydraulic control system can be used in excavator can get so extensive attention is that after the excavator adopts hydraulic control system, it will bring great improvement to many performance of products, reduce energy consumption, improve control performance and adapt to the more and more complex working requirements of the main machine. But at the same time, it is important to note that hydraulic transmission is a complex system composed of multiple components, and its maintenance and maintenance is much more difficult than mechanical transmission. Therefore, it is an important guarantee for excavator to correctly judge and eliminate the hydraulic transmission system fault of excavator.