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Electro-hydraulic proportion control system of loader

A proportional control, electromechanical hydraulic technology, applied in fluid pressure actuation system components, mechanical equipment, earth movers/shovels, etc., can solve the problems of uncontrollable reversing speed, single function, large operating force, etc., to achieve The effect of reducing labor intensity, reducing labor intensity, and reducing reversing time

Inactive Publication Date: 2011-01-05
XUZHOU CONSTR MACHINERY INST XUZHOU CONSTR MACHINERY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a loader electro-hydraulic proportional control system to solve the problems of large operating force, uncontrollable reversing speed, large impact and single function of the existing operating system of the loader

Method used

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  • Electro-hydraulic proportion control system of loader
  • Electro-hydraulic proportion control system of loader
  • Electro-hydraulic proportion control system of loader

Examples

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Embodiment 1

[0022] Embodiment 1: The control system includes: double oil pump 1, safety valve 2, pilot control valve group 3, operating handle 4, controller 5, boom positioning sensor 6, bucket level sensor 7, D32 multi-way valve 8, shovel Bucket oil cylinder 9, boom oil cylinder 10, bucket operating handle 11 and boom operating handle 12, the oil outlet of one oil pump of the double oil pump 1 is connected with the input port of the pilot control valve group 3 through the safety valve 2, and the operating handle 4, The boom positioning sensor 6 and bucket level sensor 7 are connected to the input end of the controller 5, and the output end of the controller 5 is connected to the control end of the pilot control valve group 3; the output end of the pilot control valve group 3 is connected to the D32 multi-way valve 8, the other oil pump of double oil pump 1 is connected to the input end of D32 multi-way valve 8, the output end of D32 multi-way valve 8 is connected to bucket cylinder 9 and ...

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Abstract

The invention discloses an electro-hydraulic proportion control system of a loader, and belongs to the electro-hydraulic proportion control system which is used in engineering machinery. An oil outlet of an oil pump of a double oil pump of the control system is connected with an input port of a pilot control valve bank through a safety valve, wherein an operating handle, a movable arm positioning sensor and a leveling sensor are connected with an input end of a computer control module; an output end of the computer control module is connected with a control end of the pilot control valve bank; the output end of the pilot control valve bank is connected with the input end of a D32 multi-path valve; another oil pump of the double oil pump is connected with the input end of the D32 multi-way valve; the output end of the D32 multi-way valve is connected with a bucket oil cylinder and a movable arm oil cylinder; the D32 multi-way valve is connected with an oil tank through a radiator; and an oil suction end of the double oil pump is connected with the oil tank through a filter. The system has the advantages of reducing the labor intensity of a driver, improving the operating efficiency, completely monitoring and coordinating the state of the entire machine and improving the labor efficiency, along with small operating force and high system reliability.

Description

technical field [0001] The invention relates to an electro-hydraulic proportional control system used in engineering machinery, in particular to an electro-hydraulic proportional control system for a loader. Background technique [0002] The working device of the loader is to use the hydraulic system to control the boom and bucket cylinder to complete operations such as shoveling and loading. The control system that controls the excavation and loading action is the key technology that affects the performance of the whole machine. [0003] At present, the domestic loader operation control handle adopts manual direct control and hydraulic pilot control for the reversing of the main reversing valve spool. Disadvantages such as easy fatigue and unsightly appearance. Contents of the invention [0004] The purpose of the present invention is to provide an electro-hydraulic proportional control system for loaders, which solves the problems of large operating force, uncontrollab...

Claims

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Application Information

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IPC IPC(8): E02F9/20F15B21/08
Inventor 杨力夫景军清肖刚孟庆勇王月行张振军杨涛刘莹莹范旭辉
Owner XUZHOU CONSTR MACHINERY INST XUZHOU CONSTR MACHINERY GRP
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