CN105020193A - Oil pressure control system - Google Patents
Oil pressure control system Download PDFInfo
- Publication number
- CN105020193A CN105020193A CN201410836069.8A CN201410836069A CN105020193A CN 105020193 A CN105020193 A CN 105020193A CN 201410836069 A CN201410836069 A CN 201410836069A CN 105020193 A CN105020193 A CN 105020193A
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- China
- Prior art keywords
- oil
- valve
- way electromagnetic
- electromagnetic valve
- hydraulic fluid
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to an oil pressure control system which comprises a motor, an oil tank, an oil pump in drive connection with the motor so as to pump hydraulic oil from the oil tank, a throttling valve, a check valve, a pressure regulating valve, a three-position four-way electromagnetic valve and a servo flow valve, wherein the check valve, the pressure regulating valve, the three-position four-way electromagnetic valve and the servo flow valve are communicated with the oil pump and the throttling valve. The throttling valve is communicated with a first oil port of the three-position four-way electromagnetic valve and further sequentially communicated with the servo flow valve and a second oil port of the three-position four-way electromagnetic valve through the pressure regulating valve. The three-position four-way electromagnetic valve controls the first oil port and the second oil port of the three-position four-way electromagnetic valve to be communicated with a third oil port and a fourth oil port of the three-position four-way electromagnetic valve in a switched manner. The oil feed amount of the servo flow valve and the oil feed amount of the second oil port are regulated through the servo flow valve. Through switching communication of the oil ports in the three-position four-way electromagnetic valve, the oil pressure of two oil inflow and outflow ports of an oil hydraulic cylinder is controlled at the same time; and due to the fact that the amount of the hydraulic oil flowing out of the second oil port is regulated through the servo flow valve, a piston in the oil hydraulic cylinder is moved smoothly, increased or decreased tension is smoothly applied to an adhesive tape sample, and therefore the test requirement is met.
Description
Technical field
The present invention relates to oil pressure cntrol technical field, particularly relating to a kind of oil pressure control system for controlling the action of oil pressure actuator.
Background technique
To in the fatigue test device of adhesive tape, comprise the oil pressure actuator repeatedly stretched to adhesive tape, such as, this oil pressure actuator is oil hydraulic cylinder.Refer to Fig. 1, the structural drawing of its adhesive tape fatigue test device 10 controlled for oil pressure control system.
Adhesive tape fatigue test device 10 comprises: support 110, load measuring gauge 120, upper fixture 130, lower clamp 140, oil hydraulic cylinder 150 and reference panel 160.Load measuring gauge 120 is fixed on support 110, and is connected with upper fixture 130, and oil hydraulic cylinder 150 is fixed on support 110, and its telescopic shaft is connected with lower clamp 140.Oil hydraulic cylinder 150 offers the first oil inlet and outlet 151 and the second oil inlet and outlet 152 be communicated with oil pressure control system.In actual applications, adhesive tape sample 010 is connected on fixture 130 and lower clamp 140, controls oil hydraulic cylinder 150, such that the telescopic shaft of oil hydraulic cylinder 150 is reciprocating to be moved up and down, to realize the extension test repeatedly to adhesive tape sample 010 by oil pressure control system.
But, traditional oil pressure control system is not high for accuracy, when controlling adhesive tape fatigue test device 10, usually the pulling force increasing reposefully or reduce cannot be applied on adhesive tape sample 010, add the larger reaction force of adhesive tape sample 010, cause adhesive tape fatigue test device 10 cannot carry out tensile fatigue test to adhesive tape sample 010 reposefully further, cause analysis to obtain inaccurate adhesive tape sample 010 fatigue behaviour parameter.
Summary of the invention
Based on this, be necessary the problem that cannot control oil pressure actuator for traditional oil pressure control system because of not high for accuracy reposefully, a kind of oil pressure control system that can control oil pressure actuator and run reposefully is provided.
A kind of oil pressure control system, comprising: motor, oil pump, check valve, throttle valve, pressure regulator valve, three position four-way electromagnetic valve, servo flow valve and fuel tank;
Described motor drives with described oil pump and is connected, hydraulic oil in described fuel tank is extracted to drive described oil pump, described oil pump is communicated with described throttle valve by described check valve, described throttle valve is communicated with the first hydraulic fluid port of described three position four-way electromagnetic valve, and described throttle valve is also communicated with the second hydraulic fluid port of described three position four-way electromagnetic valve with described servo flow valve via described pressure regulator valve successively;
Described three position four-way electromagnetic valve response external electric signal controls the switched conductive of its first hydraulic fluid port and the second hydraulic fluid port and its 3rd hydraulic fluid port and the 4th hydraulic fluid port;
Described servo flow valve response external control signal, with regulate the second hydraulic fluid port of itself and described three position four-way electromagnetic valve give oil mass.
Wherein in an embodiment, also comprise pressure gauge, described pressure gauge is connected between described throttle valve and described three position four-way electromagnetic valve.
Wherein in an embodiment, described pressure regulator valve is manually operated type pressure regulator valve.
Above-mentioned oil pressure control system is by the switched conductive of the first hydraulic fluid port in described three position four-way electromagnetic valve and the second hydraulic fluid port and the 3rd hydraulic fluid port and the 4th hydraulic fluid port, realization carries out oil pressure cntrol to the first oil inlet and outlet of oil hydraulic cylinder and the second oil inlet and outlet simultaneously, oil hydraulic cylinder forms back pressure effect, and enter the adjustment of the hydraulic pressure oil mass of servo flow valve by servo flow valve to flowing out from the second hydraulic fluid port, piston in oil hydraulic cylinder is made to move steadily, the reaction force of adhesive tape sample can be restrained preferably, realize the pulling force applying to increase reposefully or reduce on adhesive tape sample, analysis obtains adhesive tape sample fatigue behaviour parameter accurately, thus reach test request.
Accompanying drawing explanation
The structural drawing of the adhesive tape fatigue test device that Fig. 1 controls for oil pressure control system;
Fig. 2 is the connection diagram of adhesive tape fatigue test device shown in oil pressure control system of the present invention and Fig. 1.
Embodiment
As shown in Figure 2, it is oil pressure control system 20 of the present invention and the connection diagram of adhesive tape fatigue test device 10 shown in Fig. 1.
Oil pressure control system 20 comprises: motor 210, oil pump 220, fuel tank 230, check valve 240, throttle valve 250, three position four-way electromagnetic valve 260, pressure regulator valve 270 and servo flow valve 280.
Motor 210 drives with oil pump 220 and is connected, and extracts hydraulic oil in fuel tank 230 to drive oil pump 220.Concrete, the live axle of motor 210 rotates with the rotating speed preset, and drives oil pump 220 to be extracted by the hydraulic oil in fuel tank 230.Oil pump 220 is communicated with throttle valve 250 by check valve 240, and in actual applications, oil pump 220 is communicated with check valve 240 via transport pipe, and check valve 240 is communicated with throttle valve 250 via transport pipe.The acting as of check valve 240 prevents from reversing because of motor 210 or other reason causes hydraulic oil to flow into oil pump 220 in the other direction.Throttle valve 250 is for by changing throttling interface or chock length with the uninterrupted of regulator solution force feed.
Three position four-way electromagnetic valve 260 has four hydraulic fluid ports, and these four hydraulic fluid ports are respectively the first hydraulic fluid port 261, second hydraulic fluid port 262, the 3rd hydraulic fluid port 263 and the 4th hydraulic fluid port 264.
Throttle valve 250 is communicated with the first hydraulic fluid port 261 of three position four-way electromagnetic valve 260, and throttle valve 250 is also communicated with the second hydraulic fluid port 262 of three position four-way electromagnetic valve 260 via pressure regulator valve 270 and servo flow valve 280 successively.
Three position four-way electromagnetic valve 260 response external electric signal controls the switched conductive of the first hydraulic fluid port 261 and the second hydraulic fluid port 263 and the 3rd hydraulic fluid port 263 and the 4th hydraulic fluid port 264.Such as, be the requirement of satisfied test, regulated by the switching frequency size of external electrical signal to three position four-way electromagnetic valve 260, and the first hydraulic fluid port 261 and the second hydraulic fluid port 262 and the passage between the 3rd hydraulic fluid port 263 and the 4th hydraulic fluid port 264 are switched.
3rd hydraulic fluid port 263 of three position four-way electromagnetic valve 260 is communicated with the first oil inlet and outlet 151 with the second oil inlet and outlet 152 of oil hydraulic cylinder 150 respectively with the 4th hydraulic fluid port 264.In actual applications, when the 4th hydraulic fluid port 264 is greater than to the oil pressure that the first oil inlet and outlet 151 exports the oil pressure that the 3rd hydraulic fluid port 263 exports to the second oil inlet and outlet 152, piston in oil hydraulic cylinder 150 can move towards the second oil inlet and outlet 152, and then drive the telescopic shaft tension lower clamp 140 of oil hydraulic cylinder 150, the tensile force that adhesive tape sample 010 applies is increased gradually.When the 3rd hydraulic fluid port 263 is greater than to the oil pressure that the second oil inlet and outlet 152 exports the oil pressure that the 4th hydraulic fluid port 264 exports to the first oil inlet and outlet 151, piston in oil hydraulic cylinder 150 can move towards the first oil inlet and outlet 151, and then drive the telescopic shaft of oil hydraulic cylinder 150 to go up, the tensile force that adhesive tape sample 010 applies is reduced gradually.By carrying out oil pressure cntrol to the second oil inlet and outlet 152 of oil hydraulic cylinder 150 and the first oil inlet and outlet 151 simultaneously, oil hydraulic cylinder 150 forms back pressure effect, piston in oil hydraulic cylinder 150 is made to move steadily, the reaction force of adhesive tape sample 010 can be restrained preferably, realize the pulling force applying to increase reposefully or reduce on adhesive tape sample 010, analysis obtains adhesive tape sample 010 fatigue behaviour parameter accurately, thus reaches test request.
Servo flow valve 280 response external control signal, with regulate the second hydraulic fluid port of itself and three position four-way electromagnetic valve give oil mass.Such as, servo flow valve 280 is by entering the adjustment of the hydraulic pressure oil mass of servo flow valve 280 to flowing out from the second hydraulic fluid port 262, and realizing piston in oil hydraulic cylinder 150 moves reposefully, to restrain the reaction force of adhesive tape sample 010.
In the present embodiment, pressure regulator valve 270 is manually operated type pressure regulator valve, and in other embodiments, pressure regulator valve 270 also can be automatic type pressure regulator valve.
Visual in order to the oil pressure that realizes flowing to three position four-way electromagnetic valve 260, oil pressure control system 20 also comprises pressure gauge 290, and pressure gauge 290 is connected between throttle valve 250 and three position four-way electromagnetic valve 260.
Each technical characteristics of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristics in above-described embodiment is not all described, but, as long as the combination of these technical characteristicss does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several mode of execution of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (3)
1. an oil pressure control system, is characterized in that, comprising: motor, oil pump, check valve, throttle valve, pressure regulator valve, three position four-way electromagnetic valve, servo flow valve and fuel tank;
Described motor drives with described oil pump and is connected, hydraulic oil in described fuel tank is extracted to drive described oil pump, described oil pump is communicated with described throttle valve by described check valve, described throttle valve is communicated with the first hydraulic fluid port of described three position four-way electromagnetic valve, and described throttle valve is also communicated with the second hydraulic fluid port of described three position four-way electromagnetic valve via described pressure regulator valve and described servo flow valve successively;
Described three position four-way electromagnetic valve response external electric signal controls the switched conductive of its first hydraulic fluid port and the second hydraulic fluid port and its 3rd hydraulic fluid port and the 4th hydraulic fluid port;
Described servo flow valve response external control signal, with regulate the second hydraulic fluid port of itself and described three position four-way electromagnetic valve give oil mass.
2. oil pressure control system according to claim 1, is characterized in that, also comprises pressure gauge, and described pressure gauge is connected between described throttle valve and described three position four-way electromagnetic valve.
3. oil pressure control system according to claim 1, is characterized in that, described pressure regulator valve is manually operated type pressure regulator valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836069.8A CN105020193B (en) | 2014-12-28 | 2014-12-28 | Oil pressure control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836069.8A CN105020193B (en) | 2014-12-28 | 2014-12-28 | Oil pressure control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105020193A true CN105020193A (en) | 2015-11-04 |
| CN105020193B CN105020193B (en) | 2017-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410836069.8A Expired - Fee Related CN105020193B (en) | 2014-12-28 | 2014-12-28 | Oil pressure control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN105020193B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05253776A (en) * | 1992-03-13 | 1993-10-05 | Yaskawa Electric Corp | Hydraulic pressure generating device and working machine provided with device thereof |
| CN2646688Y (en) * | 2002-12-20 | 2004-10-06 | 长沙北站科技开发服务部 | Hydraulic test bench for storage battery forklift truck |
| CN201020372Y (en) * | 2007-03-07 | 2008-02-13 | 上海建设路桥机械设备有限公司 | Hydraulic passing-iron protective system for heavy hydraulic jaw crusher |
| CN201246357Y (en) * | 2008-05-15 | 2009-05-27 | 上海新力机器厂 | Hydraulic control system of bender |
| CN202867423U (en) * | 2012-11-12 | 2013-04-10 | 唐山昆铁科技有限公司 | Hydraulic cylinder test bed |
| CN203067375U (en) * | 2012-12-26 | 2013-07-17 | 湖南华鼎建筑科技有限公司 | Novel hydraulic pump station |
| CN203384139U (en) * | 2013-06-05 | 2014-01-08 | 浙江工商职业技术学院 | Inlet speed regulating loop |
| CN203404164U (en) * | 2013-08-13 | 2014-01-22 | 湖南特力液压有限公司 | Test equipment for testing durability of sealing element of hydraulic cylinder |
| CN203412844U (en) * | 2013-06-13 | 2014-01-29 | 唐山渤海冶金设备有限责任公司 | On-line circulation and detection device of hydraulic cylinder |
-
2014
- 2014-12-28 CN CN201410836069.8A patent/CN105020193B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05253776A (en) * | 1992-03-13 | 1993-10-05 | Yaskawa Electric Corp | Hydraulic pressure generating device and working machine provided with device thereof |
| CN2646688Y (en) * | 2002-12-20 | 2004-10-06 | 长沙北站科技开发服务部 | Hydraulic test bench for storage battery forklift truck |
| CN201020372Y (en) * | 2007-03-07 | 2008-02-13 | 上海建设路桥机械设备有限公司 | Hydraulic passing-iron protective system for heavy hydraulic jaw crusher |
| CN201246357Y (en) * | 2008-05-15 | 2009-05-27 | 上海新力机器厂 | Hydraulic control system of bender |
| CN202867423U (en) * | 2012-11-12 | 2013-04-10 | 唐山昆铁科技有限公司 | Hydraulic cylinder test bed |
| CN203067375U (en) * | 2012-12-26 | 2013-07-17 | 湖南华鼎建筑科技有限公司 | Novel hydraulic pump station |
| CN203384139U (en) * | 2013-06-05 | 2014-01-08 | 浙江工商职业技术学院 | Inlet speed regulating loop |
| CN203412844U (en) * | 2013-06-13 | 2014-01-29 | 唐山渤海冶金设备有限责任公司 | On-line circulation and detection device of hydraulic cylinder |
| CN203404164U (en) * | 2013-08-13 | 2014-01-22 | 湖南特力液压有限公司 | Test equipment for testing durability of sealing element of hydraulic cylinder |
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| Publication number | Publication date |
|---|---|
| CN105020193B (en) | 2017-12-01 |
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