Loader variable multi-stage power control module and hydraulic system

A power control module and hydraulic system technology, which is applied in fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc., can solve problems such as large difference in working pressure, waste of engine power, heating of the whole machine system, etc. Achieve the effects of stable performance, wide practical area and convenient processing

Active Publication Date: 2016-09-21
XCMG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the large difference in the working pressure required by different attachments, after all the working pressures are uniformly set by the manufacturer, when some low-pressure attachment hydraulic systems are used in conjunction with high-pressure attachment hydraulic systems, high-pressure res

Method used

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  • Loader variable multi-stage power control module and hydraulic system
  • Loader variable multi-stage power control module and hydraulic system
  • Loader variable multi-stage power control module and hydraulic system

Examples

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Example Embodiment

[0019] The present invention will be further described below in conjunction with the drawings.

[0020] Such as figure 1 As shown, a variable multi-stage power control module for a loader of the present invention includes a first shuttle valve group 14, a second shuttle valve group 15, a reversing valve 16, a variable pump LS pressure control valve 17; a first shuttle valve group 14 The pilot oil pressure is transmitted to the pilot control valve 16 through the X5 port and the X6 port; the X4 port of the second shuttle valve group 15 is connected to the pilot control pressure, and the second shuttle valve group 15 connects the X5 port, X6 port, and X4 port The maximum value of the pilot pressure oil is output through port X7; the pressure control valve 17 is connected to the LS port of the pump through the LS2 port of the hydraulically controlled reversing valve 16; the variable pump LS pressure control valve 17T port is connected to the oil tank. Among them, X5, X6, X4 are conne...

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Abstract

The invention discloses a loader variable multi-stage power control module which comprises a first shuttle valve set, a second shuttle valve set, a reversing valve and a variable pump LS pressure control valve. The first shuttle valve set transmits pilot oil pressure to the hydraulic operated reversing valve through an opening X5 and an opening X6. An opening X4 of the second shuttle valve set is connected with pilot control pressure, and the second shuttle valve set outputs the maximum value in pilot pressure oil of the opening X5, the opening X6 and the opening X4 through an opening X7. A pressure control valve communicates with a pump opening LS through a hydraulic operated reversing valve opening LS2. An opening T of the variable pump LS pressure control valve is connected with an oil tank. The invention further discloses a loader variable multi-stage power control hydraulic system with the multi-stage power control module. According to different execution mechanisms of the work hydraulic system, the pressure corresponding to the work hydraulic system is set, that is, different variable pump LS overflow pressures are set, the torque consumed by the whole hydraulic system is adjusted in good time, and then the effect of high efficiency and energy saving of the whole machine is achieved.

Description

technical field [0001] The invention relates to a loader hydraulic system, in particular to a loader variable multi-stage power control module and a hydraulic system. Background technique [0002] At present, the variable hydraulic system of the loader, the working pressure of the variable pump is set by the host manufacturer when it leaves the factory, that is, the working pressure is constant, that is, the maximum power consumed by the hydraulic system is a fixed value, in order to meet the requirements of different working conditions, the hydraulic pressure The factory pressure setting of the system is generally high. With the continuous enrichment of the hydraulic system of the attachments of the loader (for example: wood grabber, grass grabber, sweeper, forklift, etc.), the operating conditions and working areas of the loader are becoming more and more complex. more expansive. [0003] Due to the large difference in the working pressure required by different attachment...

Claims

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Application Information

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IPC IPC(8): F15B11/16F15B13/06F15B21/00
CPCF15B11/16F15B13/06F15B21/00
Inventor 赵斌谢朝阳丁平芳朱艳平张安民马鹏鹏王苏东赵梅
Owner XCMG CONSTR MACHINERY
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