Hydraulic motor locked-rotor prevention control system and method and engineering machine

A technology of hydraulic motors and control systems, which is applied in fluid pressure actuation system testing, servo motors, mechanical equipment, etc. It can solve the problems of low working efficiency of hydraulic systems, avoid the reduction of working efficiency, ensure normal work, and improve working efficiency Effect

Active Publication Date: 2014-03-19
ZOOMLION HEAVY IND CO LTD
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  • Abstract
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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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  • Hydraulic motor locked-rotor prevention control system and method and engineering machine
  • Hydraulic motor locked-rotor prevention control system and method and engineering machine
  • Hydraulic motor locked-rotor prevention control system and method and engineering machine

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Embodiment Construction

[0028] 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.

[0029] like Figure 2 to Figure 7 As shown, according to the embodiment of the present invention, the closed pump hydraulic system includes a closed electronically controlled pump 1, an electromagnetic reversing valve 2 solidified inside the closed electronically controlled pump 1 and a hydraulic motor 3, wherein the electromagnetic reversing valve 2 is used to To control the positive and negative rotation of the closed electronically controlled pump 1 , when it is necessary to control the rotation direction of the closed electronically controlled pump 1 , it is only necessary to control the power on and off of the electromagnets on both sides of the electromagnetic reversing valve 2 . The A port of...

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Abstract

The invention provides a hydraulic motor locked-rotor prevention control system and method and an engineering machine. The hydraulic motor locked-rotor prevention method includes the steps that whether a hydraulic motor (3) is blocked or not is detected; when the hydraulic motor (3) is blocked, the blocking time of the hydraulic motor (3) is calculated; when the locked-rotor time of the hydraulic motor (3) is longer than t1 seconds, it is determined that locked-rotor occurs in the hydraulic motor (3), and the hydraulic motor (3) is controlled to reversely rotate. According to the hydraulic motor locked-rotor prevention method, the problem that in the prior art, working efficiency of a hydraulic system is low due to frequent reverse rotation of the hydraulic motor 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 electronically controlled variable-type closed-type electronically controlled pumps (hereinafter referred to as closed-type 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 severely affected. Stalling occurs due to normal obstructions, such as paver scraper motor stalling due to scraper conveying plate jamming, and screw motor stalling due to 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B19/00F15B11/08
Inventor 贺劲徐仁建彭志威苏竹新杨庚
Owner ZOOMLION HEAVY IND CO LTD
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