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Anti-locking control system and anti-locking method of hydraulic motor and engineering machinery

A technology of hydraulic motor and control system, which is applied to the safety of fluid pressure actuation system, mechanical equipment, fluid pressure actuation device, etc., can solve the problem of low working efficiency of hydraulic system, achieve simple and convenient reverse control, and improve working efficiency , the effect of reducing energy waste

Active Publication Date: 2014-03-12
ZOOMLION HEAVY IND CO LTD
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AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a hydraulic motor anti-blocking control system, anti-blocking method, and construction machinery to solve the problem of low working efficiency of the hydraulic system caused by the frequent reversal of the hydraulic motor in the prior art

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  • Anti-locking control system and anti-locking method of hydraulic motor and engineering machinery
  • Anti-locking control system and anti-locking method of hydraulic motor and engineering machinery
  • Anti-locking control system and anti-locking method of hydraulic motor and engineering machinery

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Embodiment Construction

[0035] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0036] Such as Figure 2 to Figure 13 As shown, according to the embodiment of the present invention, the hydraulic system includes a hydraulic pump 1, a reversing valve and a hydraulic motor 3, wherein the reversing valve is used to control the positive and negative rotation of the hydraulic pump 1, and when it is necessary to control the rotation direction of the hydraulic pump 1 , only need to control the reversing valve for reversing.

[0037] The hydraulic motor anti-stall control system includes: a detection device for detecting whether the hydraulic motor 3 is stuck; a control device 5 that receives the detection result of the detection device and judges whether the hydraulic motor 3 is stuck...

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Abstract

The invention provides an anti-locking control system and an anti-locking method of a hydraulic motor and engineering machinery. The anti-locking method of the hydraulic motor comprises the following steps that whether the hydraulic motor (3) is clamped is detected; when the hydraulic motor (3) is clamped, the time when the hydraulic motor (3) is clamped is calculated; when the hydraulic motor (3) is clamped for t1 second, the hydraulic motor (3) is determined to be locked, and a change valve between the oil outlet end of a hydraulic pump (1) and the hydraulic motor (3) is controlled to change, so that the hydraulic motor (3) is reversed. According to the anti-locking method of the hydraulic motor, the problem of lower working efficiency of a hydraulic system due to frequent reversal of the hydraulic motor in the prior art can be solved.

Description

technical field [0001] The invention relates to the field of hydraulic control systems, in particular to a hydraulic motor anti-blocking control system, anti-blocking method, and engineering machinery. Background technique [0002] Road machinery and construction machinery that use closed electronically controlled pumps to drive hydraulic motors often encounter bidirectional hydraulic motors that only need to rotate in one direction because the working mechanism driven by them is blocked due to abnormal obstacles, such as paver scrapers. The motor is blocked due to the material jam of the scraper conveying board, and the screw motor is blocked due to the material blocking of the screw mechanism. Usually, it is necessary to take the measure of short-term reverse rotation of the motor to loosen the stuck material, eliminate the phenomenon of motor stalling, and then restore the motor to normal rotation. [0003] figure 1 It shows that the open hydraulic system adopts the exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B20/00
Inventor 贺劲徐仁建彭志威苏竹新杨庚
Owner ZOOMLION HEAVY IND CO LTD
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