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Large-flow oil cylinder hydraulic control system

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: 2021-02-09
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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  • Large-flow oil cylinder hydraulic control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A hydraulic control system for a large-flow oil cylinder, the hydraulic control system includes: an executive oil cylinder 1, a pressurized 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 is connected to the quantitative pump 5 The power input end of the fuel tank is driven and coordinated, and the oil outlet of the fuel tank is connected with the oil inlet of the quantitative pump 5, and the oil outlet of the quantitative pump 5 is connected with the oil inlet of the overflow valve 21 and the first one-way valve at the same time. 11, 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, the second hydraulic control The P2 oil port of the one-way valve 42, the P2 oil port of the third hydraulic control check valve 43, and the T oil port of the sixth directional valve ...

Embodiment 2

[0041] Embodiment 2 is basically the same as Embodiment 1, and its difference is:

[0042] The first directional valve 31 is a two-position four-way reversing solenoid valve with an H-type electromagnet position and a spring position at a cross position. The second directional valve 32, the third directional valve 33, the fourth directional valve 34 and 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 the 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 direction valve 38 is a three-position four-way reversing solenoid valve with an O-type middle position, and the ninth direction valve 39 is a three-position four-way with a Y-type middle position For the reversing solenoid valve, the two-way directional valve 71 is a two-position two-way sole...

Embodiment 3

[0044] Embodiment 3 is basically the same as Embodiment 2, and its difference is:

[0045] The first hydraulically controlled one-way valve 41, the second hydraulically controlled one-way valve 42, and the third hydraulically controlled one-way valve 43 are stroke limit hydraulically controlled one-way valves, and the fourth hydraulically controlled one-way valve 44, The fifth hydraulically controlled one-way valve 45 is a non-stroke limiting hydraulically controlled one-way valve.

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PUM

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Abstract

The invention provides a large-flow oil cylinder hydraulic control system. The hydraulic control system comprises an execution oil cylinder, a pressurization oil cylinder, a pressure oil tank, a motor, a constant displacement pump and an oil tank, the power output end of the motor is in transmission fit with the power input end of the constant displacement pump, and the oil outlet end of the oil tank communicates with the oil inlet end of the constant displacement pump; the oil outlet end of the constant displacement pump simultaneously communicates with an oil inlet of an overflow valve and an oil inlet of a first one-way valve, and an oil outlet of the first one-way valve simultaneously communicates with a working oil port B of a two-way direction valve, an oil port P2 of a first hydraulic control one-way valve, an oil port P2 of a second hydraulic control one-way valve, an oil port P2 of a third hydraulic control one-way valve and an oil port T of a sixth direction valve; and a working oil port A of the two-way direction valve simultaneously communicates with an oil port P of an eighth direction valve, a working oil port B of a seventh direction valve and an oil port P of a ninth direction valve. According to the design, a flow control valve of the execution oil cylinder is hydraulically controlled, and can adapt to short-time and large-load working conditions.

Description

technical field [0001] The invention relates to a hydraulic control system for a large-flow oil cylinder, which is particularly suitable for the hydraulic control of oil cylinders with a large cylinder diameter and a rodless cavity with a flow rate exceeding 1000 L / min. Background technique [0002] In the oil cylinder control system in the marine field, different oil cylinder control hydraulic systems are proposed according to different functions. The invention provides a hydraulic system. The hydraulic system can control a large-flow oil cylinder to run stably at various speeds, and can adapt to working conditions of short-term heavy load. Contents of the invention [0003] The object 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 of a large flow oil cylinder with good stability and controllable operating speed. [0004] For realizing above ...

Claims

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Application Information

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Patent Type & Authority Applications(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