阅读说明：本技术 一种单支液压换向阀自动控制两路油缸先后动作的液压系统 (Hydraulic system for automatically controlling sequential actions of two oil cylinders by single hydraulic reversing valve ) 是由 焦兴健 盛伟春 焦继亭 于 2021-08-11 设计创作，主要内容包括：一种单支液压换向阀自动控制两路油缸先后动作的液压系统,包括动力源,所述动力源动力连接液压泵,所述液压泵管道连通换向阀；其特征在于：所述换向阀通过给油管路A与给油管路B分别连通溢流阀A与溢流阀B；所述溢流阀如下设置：所述溢流阀包括动力油管与溢流油管,所述溢流管内设置有单向阀；所述溢流管管道连接回流管,所述回流管内设置有单向阀,所述回流管管路连接给油管路；本发明实现了单支换向阀自动控制两路油缸的先后动作,极大的提高了设备运行安全,避免了误操作以及机械行程冲突的可能,涉及到的控制元件及机械构件的使用寿命均能得到更长的保障,弥补了市场一处空白且极具推广价值。(A hydraulic system for automatically controlling two paths of oil cylinders to act sequentially through a single hydraulic reversing valve comprises a power source, wherein the power source is in power connection with a hydraulic pump, and a hydraulic pump pipeline is communicated with the reversing valve; the method is characterized in that: the reversing valve is respectively communicated with an overflow valve A and an overflow valve B through an oil supply pipeline A and an oil supply pipeline B; the overflow valve is arranged as follows: the overflow valve comprises a power oil pipe and an overflow oil pipe, and a one-way valve is arranged in the overflow pipe; the overflow pipe pipeline is connected with a return pipe, a one-way valve is arranged in the return pipe, and the return pipe pipeline is connected with an oil supply pipeline; the invention realizes the automatic control of the sequential actions of the two oil cylinders by the single reversing valve, greatly improves the running safety of equipment, avoids the possibility of misoperation and mechanical stroke conflict, ensures the service lives of related control elements and mechanical components to be longer, makes up for the blank of the market and has great popularization value.)

1. A hydraulic system for automatically controlling two paths of oil cylinders to act sequentially through a single hydraulic reversing valve comprises a power source, wherein the power source is in power connection with a hydraulic pump, and a hydraulic pump pipeline is communicated with the reversing valve; the method is characterized in that: the reversing valve is respectively communicated with an overflow valve A and an overflow valve B through an oil supply pipeline A and an oil supply pipeline B;

the specific setting form of the overflow valve A and the overflow valve B is as follows: the overflow valve comprises a power oil pipe and an overflow oil pipe, and a one-way valve is arranged in the overflow pipe; the overflow pipe pipeline is connected with a return pipe, a one-way valve is arranged in the return pipe, and the return pipe pipeline is connected with an oil supply pipeline;

the power oil pipe pipeline of the overflow valve A is connected with the first path of oil cylinder, and the overflow oil pipe pipeline of the overflow valve A is connected with the second path of oil cylinder;

and a power oil pipe pipeline of the overflow valve B is connected with the second path of oil cylinder, and an overflow oil pipe pipeline of the overflow valve B is connected with the first path of oil cylinder.

2. The hydraulic system for automatically controlling the two paths of oil cylinders to act sequentially through the single hydraulic reversing valve according to claim 1, wherein the number of the first path of oil cylinders and the second path of oil cylinders is one or more.

3. The hydraulic system for automatically controlling the two oil cylinders to act sequentially through the single hydraulic reversing valve according to claim 1, wherein a hydraulic oil radiator and a hydraulic oil tank are further arranged between the reversing valve and the hydraulic pump, and an oil return pipeline of the reversing valve is connected with the hydraulic oil radiator and the hydraulic oil tank through a sequential pipeline.

Technical Field

The invention relates to the field of general machinery, in particular to a hydraulic system for automatically controlling the sequential actions of two paths of oil cylinders by a single hydraulic reversing valve.

Background

The control and linkage control of the hydraulic system are all controlled by electronic control at present, that is, the mode of control and cooperative control is carried out by matching comprehensive control with electrical elements such as an electromagnetic valve and the like. The mode has certain disadvantages, wherein the most important is that the electrical elements are generally wearing parts and are not suitable for partial working environments; in addition, for a double-acting unit which needs cooperative or linkage control, once one path of control stroke has a problem, the whole action of the equipment is equivalently lost, especially the working stroke with strict requirements on the sequence of the front and back actions of the two paths of strokes occurs, the situation of misoperation or sequence disorder occurs, the mechanical stroke conflict is caused, and the caused loss is often difficult to estimate.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a hydraulic system which has a simple structure, is safe and reliable and can automatically control the sequential actions of two paths of oil cylinders by a single hydraulic reversing valve.

The equipment comprises a power source, wherein the power source is in power connection with a hydraulic pump, and a pipeline of the hydraulic pump is communicated with a reversing valve;

the reversing valve is respectively communicated with an overflow valve A and an overflow valve B through an oil supply pipeline A and an oil supply pipeline B;

the structure of the overflow valve A is the same as that of the overflow valve B, and the specific arrangement form is as follows: the overflow valve comprises a power oil pipe and an overflow oil pipe, and a one-way valve is arranged in the overflow pipe; the overflow pipe pipeline is connected with a return pipe, a one-way valve is arranged in the return pipe, and the return pipe pipeline is connected with an oil supply pipeline;

the power oil pipe pipeline of the overflow valve A is connected with the first path of oil cylinder, and the overflow oil pipe pipeline of the overflow valve A is connected with the second path of oil cylinder;

and a power oil pipe pipeline of the overflow valve B is connected with the second path of oil cylinder, and an overflow oil pipe pipeline of the overflow valve B is connected with the first path of oil cylinder.

That is, the oil supply pipeline A supplies oil to the overflow valve A, the power oil pipe of the overflow valve A drives the first path of oil cylinder to act, when the stroke of the first path of oil cylinder reaches the peak value, the overflowed oil pressure of the first path of oil cylinder supplies oil to the second path of oil cylinder through the overflow oil pipe of the overflow valve A, so that the second path of oil cylinder slightly lags behind the first path of oil cylinder to act, namely, the second path of oil cylinder slightly lags behind the first path of oil cylinder to act continuously;

the first path of oil cylinder returns oil to the oil supply pipeline B through a return pipe of the overflow valve B;

the oil supply pipeline B supplies oil to the overflow valve B, the power oil pipe of the overflow valve B drives the second way of oil cylinder to act, and the overflowed oil of the second way of oil cylinder supplies oil to the first way of oil cylinder through the overflow oil pipe of the overflow valve B, so that the first way of oil cylinder slightly lags behind the action of the second way of oil cylinder, namely the first way of oil cylinder slightly lags behind the continuous action of the second way of oil cylinder.

And the second path of oil cylinder returns oil to the oil supply pipeline A through a return pipe of the overflow valve A.

Furthermore, the number of the first path of oil cylinder and the second path of oil cylinder is one or more.

Furthermore, a hydraulic oil radiator and a hydraulic oil tank are arranged between the reversing valve and the hydraulic pump, and the reversing valve oil return pipeline is connected with the hydraulic oil radiator and the hydraulic oil tank through a sequential pipeline and used for returning oil into the hydraulic pump.

The invention has the beneficial effects that: the hydraulic control system has the advantages of simple structure, convenience in use, low manufacturing cost and easiness in maintenance, and by the aid of the simple structure, various problems existing in linkage control of a hydraulic system in the prior art are solved, the sequential actions of two oil cylinders are automatically controlled by a single reversing valve, the running safety of equipment is greatly improved, the possibility of misoperation and mechanical stroke conflict is avoided, the service lives of related control elements and mechanical components can be guaranteed to be longer, a market blank is filled, and the hydraulic control system has high popularization value.

Drawings

FIG. 1 is a schematic structural diagram of a hydraulic system for automatically controlling sequential actions of two oil cylinders by a single hydraulic directional control valve according to the invention;

reference numerals:

1-hydraulic pump 2-hydraulic oil tank 3-hydraulic oil radiator 4-overflow valve B5-oil supply pipeline B6-second oil cylinder 7-first oil cylinder 8-overflow oil pipe A9-power oil pipe A10-overflow valve A11-return pipe A12-oil supply pipeline A13-reversing valve 14-power oil pipe B15-return pipe B16-overflow oil pipe B

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

Referring to fig. 1, the hydraulic system for automatically controlling two paths of oil cylinders to act sequentially by using a single hydraulic directional control valve comprises a power source, wherein the power source is in power connection with a hydraulic pump 1, and a pipeline of the hydraulic pump 1 is communicated with a directional control valve 13;

the reversing valve 13 is respectively communicated with an overflow valve A10 and an overflow valve B4 through an oil feed pipeline A12 and an oil feed pipeline B5;

the overflow valve A10 and the overflow valve B4 have the same structure, and the specific arrangement form is as follows:

the overflow valve A10 comprises a power oil pipe A9 and an overflow oil pipe A8, and a one-way valve is arranged in the overflow pipe A; the pipeline of the overflow pipe A is connected with a return pipe A11, a one-way valve is arranged in the return pipe A11, and the return pipe A11 is connected with an oil supply pipeline A12;

the overflow valve B4 comprises a power oil pipe B14 and an overflow oil pipe B16, and a one-way valve is arranged in the overflow pipe B; the pipeline of the overflow pipe B is connected with a return pipe B15, a one-way valve is arranged in the return pipe B15, and the return pipe B15 is connected with an oil supply pipeline B5;

the power oil pipe A9 pipeline of the overflow valve A10 is connected with the first way of oil cylinder 7, and the overflow oil pipe A8 pipeline of the overflow valve A10 is connected with the second way of oil cylinder 6;

the power oil pipe B14 pipeline of the overflow valve B4 is connected with the second way cylinder 6, and the overflow oil pipe B16 pipeline is connected with the first way cylinder 7.

That is to say, the oil supply pipeline a12 supplies oil to the overflow valve a10, the power oil pipe a9 of the overflow valve a10 drives the first way cylinder 7 to operate, when the stroke of the first way cylinder 7 reaches the peak value, the overflowed oil of the first way cylinder supplies oil to the second way cylinder 6 through the overflow oil pipe A8 of the overflow valve a10, so that the second way cylinder 6 slightly lags behind the first way cylinder 7 to operate, that is, the second way cylinder 6 slightly lags behind the first way cylinder 7 to operate continuously;

the first path of oil cylinder 7 returns oil to the oil supply pipeline B5 through a return pipe B15 of an overflow valve B4;

the oil supply pipeline B5 supplies oil to the overflow valve B4, the power oil pipe B14 of the overflow valve B4 drives the second way of oil cylinder 6 to act, the overflowed oil supplies oil to the first way of oil cylinder 7 through the overflow oil pipe B16 of the overflow valve B4, so that the first way of oil cylinder 7 slightly lags behind the action of the second way of oil cylinder 6, namely the first way of oil cylinder 7 slightly lags behind the continuous action of the second way of oil cylinder 6.

The second way oil cylinder 6 returns oil to the oil supply pipeline A12 through a return pipe A11 of the overflow valve A10.

Furthermore, the number of the first path of oil cylinder 7 and the second path of oil cylinder 6 is one or more.

Furthermore, a hydraulic oil radiator 3 and a hydraulic oil tank 2 are further arranged between the reversing valve 13 and the hydraulic pump 1, and an oil return pipeline of the reversing valve 13 is sequentially connected with the hydraulic oil radiator 3 and the hydraulic oil tank 2 through pipelines and used for returning oil into the hydraulic pump 1.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.