Control system for variable pump and hydraulic walking arrangement

变量泵的控制系统以及液压行走设备

Abstract

本发明公开了一种变量泵的控制系统,包括变量泵控制机构(1),该变量泵控制机构的出油管路(11)与变量泵(2)的排量控制装置(21)的压力控制口(21A)连通,其中,变量泵控制系统还包括旁接在出油管路上的限压支路(3),并且,当变量泵的供油管路(22)中的压力大于等于预定值时,限压支路导通;当小于预定值时,限压支路断开。还公开了一种液压行走设备,包括行走马达(5)和驱动该行走马达(5)的变量泵(2),该变量泵通过上述变量泵的控制系统来控制。该变量泵控制系统中的变量泵控制机构易于操作,例如在用于驱动液压行走设备时,不容易因为驾驶人员的误操作而对发动机造成损坏并导致交通事故。
The invention discloses a control system for a variable pump, which comprises a variable pump control mechanism (1). The oil outlet pipeline (11) of the variable pump control mechanism is communicated with the pressure control port (21A) of a discharge capacity control device (21) of the variable pump (2). The control system of the variable pump also comprises a pressure limiting branch (3) connected beside the oil outlet pipeline, and moreover, when the pressure in an oil supply pipeline (22) of the variable pump is not less than a preset value, the pressure limiting branch is switched on; and when the pressure in the oil supply pipeline (22) of the variable pump is less than the preset value, the pressure limiting branch is switched off. The invention also discloses a hydraulic walking arrangement, which comprises a walking motor (5) and the variable pump (2) which is used for driving the walking motor (5), wherein the variable pump is controlled through the control system for the variable pump. The variable pump control mechanism in the control system for the variable pump is easy to operate, for example, when the control system for the variable pump is used for driving the hydraulic walking arrangement, the phenomenon that an engine is damaged and a traffic accident is caused because of the misoperation of a driver is not easy to happen.

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-105257632-AJanuary 20, 2016中联重科股份有限公司一种液压行走系统及其控制方法、环卫机械
    WO-2014000386-A1January 03, 2014中联重科股份有限公司液压系统、液压系统的控制方法和工程机械