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A hydraulic control system for a large flow oil cylinder

A hydraulic control system and large flow technology, which is applied to fluid pressure actuation system components, fluid pressure converters, fluid pressure actuation devices, etc., and can solve problems such as poor stability and slow execution speed of flow cylinders

Active Publication Date: 2022-07-22
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems of slow execution speed and poor stability of the flow oil cylinder in the prior art, and provide a hydraulic control system for a large flow oil cylinder with good stability and controllable operating speed

Method used

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  • A hydraulic control system for a large flow oil cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A large-flow oil cylinder hydraulic control system, the hydraulic control system includes: an execution oil cylinder 1, a booster oil cylinder 2, a pressure oil tank 3, a motor 4, a quantitative pump 5 and an oil tank, the power output end of the motor 4 and the quantitative pump 5 The power input end of the fuel tank is driven and matched, the oil outlet end of the oil tank is communicated with the oil inlet end of the quantitative pump 5, and the oil outlet end of the quantitative pump 5 is connected with the oil inlet of the relief valve 21 and the first one-way valve at the same time. The oil inlet of 11 is connected to each other, and the oil outlet of the first check valve 11 is connected with the B working oil port of the two-way directional valve 71, the P2 oil port of the first hydraulic control check valve 41, and the second hydraulic control valve 41. The P2 oil port of the check valve 42, the P2 oil port of the third hydraulic control check valve 43 and the T...

Embodiment 2

[0041] Example 2 is basically the same as Example 1, except that:

[0042] The first directional valve 31 is a 2-position 4-way reversing solenoid valve with an H-shaped solenoid and a spring positioned at a cross position. The second directional valve 32 , the third directional valve 33 , the fourth directional valve 34 and the The fifth directional valve 35 is a two-position three-way reversing solenoid valve, the sixth directional valve 36 is a two-position four-way reversing solenoid valve with a spring in the parallel position, and the seventh directional valve 37 is a spring in the cross position. Two-position four-way reversing solenoid valve, the eighth directional valve 38 is a three-position four-way reversing solenoid valve with an O-shaped neutral position, and the ninth directional valve 39 is a three-position four-way with a Y-shaped neutral position. Reversing solenoid valve, the two-way directional valve 71 is a two-position two-way solenoid valve, and the two-...

Embodiment 3

[0044] Example 3 is basically the same as Example 2, except that:

[0045] The first hydraulic control check valve 41, the second hydraulic control check valve 42, and the third hydraulic control check valve 43 are all stroke limit hydraulic control check valves. The fourth hydraulic control check valve 44, The fifth hydraulic control check valve 45 is a non-travel limit hydraulic control check valve.

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PUM

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Abstract

A large-flow oil cylinder hydraulic control system, the hydraulic control system comprises: an execution oil cylinder, a pressurized oil cylinder, a pressure oil tank, a motor, a quantitative pump and an oil tank, the power output end of the motor is driven and matched with the power input end of the quantitative pump, The oil outlet end of the oil tank is communicated with the oil inlet end of the quantitative pump, the oil outlet end of the quantitative pump is communicated with the oil inlet port of the relief valve and the oil inlet port of the first check valve at the same time, and the The oil outlet of the one-way valve is simultaneously connected to the B working oil port of the two-way directional valve, the P2 oil port of the first hydraulic control check valve, the P2 oil port of the second hydraulic control check valve, and the third hydraulic control check valve. The P2 oil port of the valve is connected to the T oil port of the sixth directional valve, and the A working oil port of the two-way directional valve is simultaneously connected to the P oil port of the eighth directional valve, the B working oil port of the seventh directional valve, and the third directional valve. The P port of the nine-direction valve is connected. This design not only implements hydraulic control of the flow control valve of the oil cylinder, but also can adapt to short-time and heavy-load working conditions.

Description

technical field [0001] The invention relates to a large-flow oil cylinder hydraulic control system, which is particularly suitable for the hydraulic control of an oil cylinder with a large cylinder diameter and a rodless cavity flow rate exceeding 1000 L / min. Background technique [0002] In the oil cylinder control system in the field of ships, different oil cylinder control hydraulic systems are proposed according to different functions. The invention provides a hydraulic system, which is capable of controlling a large-flow oil cylinder to run stably at various speeds, and can adapt to a short-time large-load working condition. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the problems of slow execution speed and poor stability of the flow oil cylinder in the prior art, and to provide a large flow oil cylinder hydraulic control system with good stability and controllable running speed. [0004] For achieving the above purpose, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B21/08F15B11/08F15B13/04F15B13/044F15B3/00
CPCF15B21/087F15B11/08F15B13/0401F15B13/044F15B13/027F15B3/00
Inventor 张三喜丁元亮
Owner WUHAN MARINE MACHINERY PLANT