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Control valve block system and method for testing hydraulic cylinders

A technology of hydraulic cylinders and control valves, which is applied in fluid pressure actuation system testing, fluid pressure actuation devices, servo motor components, etc. It can solve the problems of low test efficiency and high work intensity of operators, and it is easy to reach the oil temperature. Effect of control, improvement of test efficiency, and simplification of test process

Active Publication Date: 2013-06-12
CHINA RAILWAY CONSTR HEAVY IND
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

It can be seen that the overflow-loaded hydraulic cylinder test system and its method in the prior art are only suitable for a small number of test samples, so the test efficiency is low, and the operator's work intensity is correspondingly high

Method used

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  • Control valve block system and method for testing hydraulic cylinders
  • Control valve block system and method for testing hydraulic cylinders
  • Control valve block system and method for testing hydraulic cylinders

Examples

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Embodiment Construction

[0023] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0024] refer to figure 1 , the control valve block system 15 for testing hydraulic cylinders according to the present invention includes two groups of functional reversing valves and two groups of selective reversing valves.

[0025] The first group of functional reversing valves includes cartridge valves 401 , 402 , 404 , 405 ; the second group of functional reversing valves includes cartridge valves 406 , 407 , 408 , and 409 . Each group of functional reversing valves consists of two two-position three-way reversing valves as pilot control valves. The two-position three-way reversing valve can be an electromagnetic reversing valve.

[0026] In the first group of functional reversing valves: the cartridge valve 401 is connected to the control chamber (C chamber) of the cartridge valve 405, and its pilot pressure is controlled by the two-position three-way rev...

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Abstract

The invention provides a control valve block system for testing hydraulic cylinders, and belongs to the field of mechanical hydraulics. The system comprises a first main oil port and a second main oil port that are used for receiving hydraulic oil from oil sources, hydraulic cylinder connectors connected with rod cavities and rodless cavities of the hydraulic cylinders, at least two groups of function reversal valves, at least two groups of selection reversal valves and selection units, wherein pressure ports of two-position three-way reversal valves are communicated with each other, and connected with outlets of the selection units; the first main oil port is communicated with a working cavity of a cartridge valve in each cartridge valve unit; the second main oil port is communicated with inlets of hydraulic control one-way valves in the selection reversal valves; and the first main oil port and the second main oil port are communicated with the two-position three-way reversal valves communicated with each other through the selection units. The invention further provides a method. According to the system and the method, mounting is required only once; the two hydraulic cylinders are measured simultaneously; an independent overflow loading device is avoided; the efficiency is improved; and the cost is lowered.

Description

technical field [0001] The present invention relates to a system for testing a hydraulic cylinder, in particular to a control valve block system for testing a hydraulic cylinder. [0002] The invention also relates to a method for testing hydraulic cylinders. Background technique [0003] According to the requirements of GB / 15622-2005 "Hydraulic Cylinder Test System" and JB / T10205-2010 "Hydraulic Cylinder", the hydraulic cylinder test items mainly include trial operation test, starting pressure characteristic test, pressure test, durability test, leakage test (internal leakage and external leakage test), buffer test, load efficiency test, high temperature test and stroke test. Except for trial run test, starting pressure characteristic test, withstand voltage test and stroke test, other test items require loading test of the system. [0004] At present, most of the hydraulic cylinder test systems on the market are in the overflow loading mode. The simulated load of this ty...

Claims

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Application Information

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IPC IPC(8): F15B13/04F15B19/00
Inventor 刘飞香程永亮郑大桥廖金军李之雄左佳玉郝蔚祺王文标
Owner CHINA RAILWAY CONSTR HEAVY IND
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