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High-volume hydraulic two-stage pressure-regulating distributor

A high-flow, distributor technology, used in fluid pressure actuation devices, servo motor assemblies, mechanical equipment, etc.

Inactive Publication Date: 2011-06-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no pressure-regulating distributor that can realize high and low pressure two-stage working pressure.

Method used

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  • High-volume hydraulic two-stage pressure-regulating distributor

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0021] Referring to Fig. 1, this embodiment includes a low-pressure circuit, a high-pressure circuit, a hydraulic system interface and a fuel tank interface, the low-pressure circuit and the high-pressure circuit are respectively connected to the hydraulic system interface and the fuel tank interface, and the low-pressure circuit includes a first cartridge valve 1 and a second cartridge valve 6. The first electromagnetic reversing valve 7, the second electromagnetic reversing valve 5.1, the third electromagnetic reversing valve 5.2 and the pressure reducing valve 4, the second electromagnetic reversing valve 5.1 and the third electromagnetic reversing valve 5.2 are respectively connected to the first The cartridge valve 1 and the pressure reducing valve 4, the first electromagnetic reversing valve 7 is connected to the second cartridge valve 6, and th...

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Abstract

The invention provides a large-flux hydraulic two-step pressure regulation distributor, comprising a low pressure loop, a high pressure loop, a hydraulic system interface, and an oil tank interface; the low pressure loop and the high pressure loop are respectively connected with the hydraulic system interface and the oil tank interface; the lower pressure loop comprises a first insertion valve (1) and a second insertion valve (6), a first electromagnetic conversion valve (7), a second electromagnetic conversion valve (5.1), and a third electromagnetic conversion valve (5.2) and a pressure reducing valve (4); the second electromagnetic conversion valves (5.1) and the third electromagnetic conversion valve (5.2) are respectively connected with the first insertion valve (1) and the pressure reducing valve (4); the first electromagnetic conversion valve (7) is connected with the second insertion valve (6); the high pressure loop comprises a third insertion valve (9.1), a fourth insertion valve (9.2), a fourth electromagnetic conversion valve (8.1) and a fifth electromagnetic conversion valve (8.2); the fourth electromagnetic conversion valve (8.1) and the fifth electromagnetic conversion valve (8.2) are respectively connected with the third insertion valve (9.1) and the fourth insertion valve (9.2); the hydraulic system interface is provided with an oil filter (3). The invention has two-step high pressure and low pressure regulation function and pressure releasing function, which can implement the smooth shift between a high pressure and a low pressure.

Description

(1) Technical field [0001] The invention relates to hydraulic distributor technology, in particular to a large-flow hydraulic two-stage pressure-regulating distribution technology. (2) Background technology [0002] In hydraulic systems such as hydraulic vibration test rigs, hydraulic seismic test rigs and hydraulic road simulation test rigs, it is usually required that the hydraulic system can provide high and low pressure working pressures. The system starts normally at low pressure, and after the start, the hydraulic system smoothly switches from low pressure to working pressure (high pressure). And still do not have the pressure regulating distributor that can realize high and low pressure two grades of working pressures at present. (3) Contents of the invention [0003] The purpose of the present invention is to provide a large-flow hydraulic two-stage pressure-regulating distributor with high-low pressure two-stage pressure regulation function and pressure unloading...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/044
Inventor 韩俊伟叶正茂丛大成张辉
Owner HARBIN INST OF TECH
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