Detection system and method for hydraulic motor and engineering vehicle

Abstract

The invention relates to the field of hydraulic system detection, and discloses a detection system and method for a hydraulic motor as well as an engineering vehicle comprising the detection system for the hydraulic motor. The detection system comprises an execution mechanism, a speed detector and a controller, and ascending or descending of the execution mechanism is driven by the hydraulic motor; the speed detector is used for detecting ascending or descending speed of the execution mechanism; and the controller is used for executing the following operations of outputting an electric signalso as to control the input flow of the hydraulic motor so that ascending or descending speed of the execution mechanism can be controlled and determining whether the hydraulic motor generates internalleakage or not according to the output electric signal and ascending or descending speed of the execution mechanism. According to the system and the method, the internal leakage condition of the hydraulic motor can be detected in real time, the corresponding actions can be cut off in time under the condition that the hydraulic motor generates the internal leakage fault so that hook gliding of a hoisting mechanism or stall of a crawler type vehicle can be effectively prevented, and then the safety of field engineering and remanufactured products can be greatly improved.

Description

technical field [0001] The present invention relates to the field of detection of hydraulic systems, in particular to a detection system and method for hydraulic motors and an engineering vehicle including the detection system for hydraulic motors. Background technique [0002] The hoisting mechanism of the existing hoisting machinery is driven by a hydraulic motor. When lifting a heavy load, the hydraulic motor is subjected to high-pressure oil and is inevitably subjected to pressure shock. As the use time increases, the wear of the hydraulic motor increases, and the corresponding internal leakage gradually increases. When the amount of internal leakage increases to a certain extent, the hydraulic motor is not enough to carry a large load. This is because when carrying a large load, the hydraulic motor tends to be pulled and damaged suddenly, which will cause the winch to slip hook and cause heavy objects to suddenly fall to the ground, posing a major threat to the safety ...

AI Technical Summary

Problems solved by technology

When the amount of internal leakage increases to a certain extent, the hydraulic motor is not enough to carry a large load. This is because when carrying a large load, the hydraulic motor is often pulled and damaged suddenly, which will cause the winch to slip hook and cause heavy objects to suddenly fall to the ground, posing a major threat to the safety of persons and property at the site

In the same way, when the crawler-type walking machine goes down a steep slope, the load will increase, which will lead to an increase in the pressure on the hydraulic motor, which will lead to damage to the hydraulic motor, stall the vehicle, and eventually cause a major safety accident

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