Automatic fault diagnosis system of bulldozer

Abstract

The invention relates to an automatic fault diagnosis system of a bulldozer. A controller and a display are connected with a CAN wire. The controller comprises an engine controller, a detection controller and a traveling controller. Each engine parameter sensor is connected with the engine controller; a bulldozer transmission and working parameter sensor, a bulldozer starting system electrical device detection points are connected with the detection controller; and a travelling control handle, a travelling brake pedal, a travelling solenoid valve, a steering brake solenoid valve and a bulldozer travelling pressure and velocity sensor are connected with the traveling controller. The invention can diagnose all faults of the electrical devices, lines, and part of hydraulic system of bulldozer, alarm and display the detected content, thus an operator can find the fault points directly according to indication of alarm, and then eliminate the faults effectively. Therefore, labor intensity is reduced and downtime is shortened, and the maintenance cost is reduced. The automatic fault diagnosis system can make sure the bulldozer operate safely and improve the overall management level of the bulldozer. The invention has the advantages of stable performance, convenient operation, safety and reliability and humanized interface.

Description

Technical field: [0001] The invention relates to a fault automatic system for construction machinery, in particular to a bulldozer engine controller. Background technique: [0002] At present, the domestic bulldozer electrical system is limited to the basic engine starting circuit and parameter measurement system, and there is no effective automatic diagnosis system for electrical components and circuit failures. Therefore, there is no foreseeability before the occurrence of the failure, and it is impossible to make preparations in advance and passively deal with the occurrence of the failure. After a fault occurs, it is often dependent on the actual work experience of the operator to determine the fault point, which creates great difficulties for solving the problem quickly and in time. At the same time, it increases the labor intensity of the operators and reduces the production efficiency, resulting in an increase in production costs and a decrease in mechanical efficiency. ...

AI Technical Summary

Problems solved by technology

Therefore, there is no predictability before the failure occurs, and it is impossible to make preparations in advance and deal with the failure passively

After a fault occurs, it often depends on the actual work experience of the operator to judge the fault point, which causes great difficulties for solving the problem quickly and in time

At the same time, it increases the labor intensity of the operator and reduces the production efficiency, resulting in an increase in production cost and a decrease in mechanical efficiency.

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