CN104314924A - Hydraulic cylinder testing bed system - Google Patents
Hydraulic cylinder testing bed system Download PDFInfo
- Publication number
- CN104314924A CN104314924A CN201410430823.8A CN201410430823A CN104314924A CN 104314924 A CN104314924 A CN 104314924A CN 201410430823 A CN201410430823 A CN 201410430823A CN 104314924 A CN104314924 A CN 104314924A
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- oil
- hydraulic cylinder
- oil circuit
- loading
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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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic cylinder testing bed system. The hydraulic cylinder testing bed system comprises an oil tank, an oil temperature control loop, a loading oilway, a detecting oilway and a returning oilway, wherein the oil temperature control loop sends hydraulic oil in the oil tank into a loading hydraulic cylinder and a tested hydraulic cylinder through the loading oilway and the detecting oilway respectively, and sends oil discharged from the tested hydraulic cylinder and the loading hydraulic cylinder into the oil tank; the loading oilway drives the loading hydraulic cylinder; the detecting oilway drives the tested hydraulic cylinder; the tested hydraulic cylinder is connected with the loading hydraulic cylinder through a quick connector. Compared with the conventional hydraulic cylinder testing bed system, the hydraulic cylinder testing bed system provided by the invention saves energy, and can satisfy the hydraulic cylinder testing precision well by being matched with an oil temperature control system, is suitable for high-power and long-time hydraulic cylinder testing experiments, but is higher in design cost.
Description
Technical field
The invention belongs to hydraulic test apparatus field, relate to a kind of hydraulic testing apparatus, specifically a kind of cylinder bench system.
Background technique
Oil hydraulic cylinder is one of main executive component of hydraulic system.Be widely used in all kinds of industries such as engineering machinery, mining machinery, automotive industry and intelligent machine at present, as excavator, hoist, high-altitude operation vehicle and robot building etc., its characteristic quality affects the service behaviour of hydraulic system to a great extent.Along with the develop rapidly of hydraulics, require also day by day to improve to oil hydraulic cylinder combination property, the tests and analysis of oil hydraulic cylinder has become the important means ensureing that hydraulic system normally works.
Current domestic Hydraulic Industry factory and hydraulic pressure research institute, all there is the cylinder bench of corresponding product, learn by inquiry, there is energy waste in these existing cylinder benchs, oil temperature is difficult to the problems such as control mostly, to such an extent as to can not carry out project testing to the oil hydraulic cylinder product produced for a long time.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of prior art, a kind of cylinder bench system is provided, adopt Oil-temperature control system and asymmetric solenoid directional control valve to be applied to the detection experiment controlling asymmetrical cylinder, be testing precision with proof test platform, and reduce the waste of the energy.
In order to solve above technical problem, the invention provides a kind of cylinder bench system, comprise fuel tank, Oil-temperature control loop, loading oil circuit, detect oil circuit and reclaim oil circuit, hydraulic oil in described fuel tank is delivered to by loading oil circuit and detection oil circuit and is loaded in cylinder and tested oil hydraulic cylinder by described Oil-temperature control loop respectively, by recovery oil circuit, the discharge oil of tested oil hydraulic cylinder and loading hydraulic cylinder is delivered in described fuel tank again, described loading oil circuit drive load oil hydraulic cylinder, described detection oil circuit drives tested liquid cylinder pressure, described tested liquid cylinder pressure is connected with rapid pipe joint logical between loading hydraulic cylinder,
Described Oil-temperature control loop is picked out from fuel tank by oil pipe, two branch roads are divided into lead to cooler and heater respectively after the secondary filter of band signal transmitter, again the oil outlet of described cooler and heater is incorporated to proportion adjustment mixing valve, delivers to loading oil circuit and detection oil circuit by the outlet of described proportion adjustment mixing valve respectively through oil purifier;
Described loading oil circuit comprises the gear pump, rectification oil circuit and the loading hydraulic cylinder that connect successively through oil pipe, second, four interfaces of described rectification oil circuit are connected with the oil inlet and outlet of described loading hydraulic cylinder respectively, described gear delivery side of pump is connected with the 3rd interface of described rectification oil circuit through oil pipe, and the first interface of described rectification oil circuit is connected with described recovery oil circuit through pressurization relief valve;
Described detection oil circuit is connected with one-way valve through limit pressure type variable pump by oil pipe, described one-way valve is connected with the first import of described asymmetric selector valve, first outlet of described asymmetric selector valve is connected with the filler opening of tested oil hydraulic cylinder by bi-bit bi-pass selector valve through tested pressure pipeline, the oil outlet of described tested oil hydraulic cylinder is connected with the second import of asymmetric selector valve by one-way valve through tested pressure relief pipe, and the bi-bit bi-pass selector valve and one-way valve of described tested pressure pipeline and tested pressure relief pipe are all parallel with a series flow control valve; Described asymmetric selector valve second exports and is connected with described recovery oil circuit by the road;
Described recovery oil circuit comprises the tested recovery oil circuit being arranged on the outlet of described pressure limiting variable pump and oil circuit is reclaimed in the loading being arranged on described gear pump outlet, described tested recovery oil circuit is provided with safety valve, the relief valve that oil circuit is installed is reclaimed in described loading, is connected after oil circuit parallel connection is reclaimed in described tested recovered oil and loading through reclaiming oil pipe with described fuel tank.
The technological scheme that the present invention limits further is: aforesaid cylinder bench system, and the secondary filter of the band signal transmitter on described Oil-temperature control loop is also provided with a parallel branch, and described branch road is provided with one-way valve and pressure relay.
Aforesaid cylinder bench system, the export pipeline of the in-line of described loading hydraulic cylinder and tested liquid cylinder pressure and gear pump and limit pressure type variable pump is all provided with the pressure gauge of band pressure meter switch.
Further, aforesaid cylinder bench system, described gear pump and limit pressure type variable pump drive by motor.
The invention has the beneficial effects as follows: test stand hydraulic system of the present invention is compared with traditional hydraulic test bench system, mainly save the energy, match with Oil-temperature control system, the testing precision of oil hydraulic cylinder can be met well, be suitable for high-power and that the time is longer oil hydraulic cylinder test experiments, but design cost is higher.
Accompanying drawing explanation
Fig. 1 is the connection diagram of hydraulic system of the present invention;
Wherein: l. oil purifier 2. limit pressure type variable pump 3. gear pump 4. safety valve 5. relief valve 6, the 7. tested oil hydraulic cylinder 15. of motor 8. one-way valve 9. pressure meter switch 10. pressure gauge 11. asymmetric selector valve 12. series flow control valve 13. bi-bit bi-pass selector valve 14. load secondary filter 24. fuel tank of relief valve 16. rapid pipe joint 17. loading hydraulic cylinder 18. rectification oil circuit 19. cooler 20. heater 21. proportion adjustment mixing valve 22. pressure relay 23. with signal transmitter.
Embodiment
embodiment 1
The present embodiment provides a kind of cylinder bench system, structure as shown in Figure 1, comprise fuel tank, Oil-temperature control loop, loading oil circuit, detection oil circuit and reclaim oil circuit, hydraulic oil in fuel tank is delivered to by loading oil circuit and detection oil circuit and is loaded in cylinder and tested oil hydraulic cylinder by Oil-temperature control loop respectively, by recovery oil circuit, the discharge oil of tested oil hydraulic cylinder and loading hydraulic cylinder is delivered in fuel tank again, loading oil circuit drive load oil hydraulic cylinder, detect oil circuit and drive tested liquid cylinder pressure, tested liquid cylinder pressure is connected with rapid pipe joint 16 logical between loading hydraulic cylinder;
Oil-temperature control loop is picked out from fuel tank 24 by oil pipe, two branch roads are divided into lead to cooler 19 and heater 20 respectively after the secondary filter 23 of band signal transmitter, again the oil outlet of cooler and heater is incorporated to proportion adjustment mixing valve 21, loading oil circuit and detection oil circuit is delivered to respectively through oil purifier 1 by the outlet of proportion adjustment mixing valve, secondary filter 23 pipeline with signal transmitter is also provided with a parallel branch, branch road is provided with one-way valve and pressure relay 22;
Loading oil circuit comprises the gear pump 3, rectification oil circuit 18 and the loading hydraulic cylinder 17 that connect successively through oil pipe, second, four interfaces of rectification oil circuit are connected with the oil inlet and outlet of loading hydraulic cylinder 17 respectively, the outlet of gear pump 3 is connected with the 3rd interface of rectification oil circuit 18 through oil pipe, and the first interface of rectification oil circuit is connected with recovery oil circuit through pressurization relief valve 15;
Detect oil circuit to be connected with one-way valve 8 through limit pressure type variable pump 2 by oil pipe, one-way valve 8 is connected with the first import of asymmetric selector valve 11, first outlet of asymmetric selector valve 11 is connected with the filler opening of tested oil hydraulic cylinder 14 by bi-bit bi-pass selector valve 13 through tested pressure pipeline, the oil outlet of tested oil hydraulic cylinder 14 is connected by second import of one-way valve 8 with asymmetric selector valve 11 through tested pressure relief pipe, and the bi-bit bi-pass selector valve and one-way valve of tested pressure pipeline and tested pressure relief pipe are all parallel with a series flow control valve 12; Asymmetric selector valve 11 second exports and is connected with recovery oil circuit by the road, and gear pump 3 and limit pressure type variable pump 2 drive by motor 6,7;
Reclaim oil circuit and comprise the tested recovery oil circuit being arranged on pressure limiting variable pump outlet and the loading recovery oil circuit being arranged on gear pump outlet, tested recovery oil circuit is provided with safety valve 4, load the relief valve 5 reclaiming and oil circuit is installed, tested recovered oil and loading are reclaimed after oil circuit parallel connection and are connected with fuel tank 24 through reclaiming oil pipe, the export pipeline of the in-line of loading hydraulic cylinder and tested liquid cylinder pressure and gear pump and limit pressure type variable pump are all provided with the pressure gauge 10 of band pressure meter switch 9.
The working principle of the present embodiment: separately, when carrying out load test, tested oil hydraulic cylinder moves to the left or to the right, and loading cylinder is also and then moved to the left or to the right for tested oil hydraulic cylinder 14 and loading cylinder 17 oil supply loop.By gear pump 3 through one-way valve to loading the left chamber of cylinder or the initiatively repairing of right chamber, in case repairing chamber produces certain degree of vacuum.And right chamber or left chamber hydraulic oil directly flow back to fuel tank through relief valve 15, the adjustment pressure of relief valve, can regulate according to induced pressure, to realize passive loading.Such design can make one-way valve, slippage pump etc. in loading cylinder loop all locate under low pressure to work, only have load cylinder outlet, a bit of pipeline between one-way valve and relief valve under high pressure works.Adopt this passive load mode, a high-pressure system place is under low pressure worked, and security of system is reliable, structure is simple.Adopt limit pressure type variable pump 2 and series flow control valve 12 speed governing in tested cylinder circuit, speed adjustable range is large, and speed load characteristic is comparatively hard, and does not have spill losses.Utilize asymmetric solenoid directional control valve to control asymmetrical cylinder, improve the bearing capacity of system, there is cavitation phenomenon in the system that avoids to a certain extent, and compression shock when ensure that oil hydraulic cylinder commutates, decrease noise and vibration.The Oil-temperature control system be made up of proportion adjustment mixing valve 21, cooler 19 and heater 20 etc. also by controlling oil temperature, improves the testing precision of test stand to a certain extent.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technological scheme basis is done, all falls within scope.
Claims (4)
1. a cylinder bench system, comprise fuel tank, Oil-temperature control loop, loading oil circuit, detection oil circuit and reclaim oil circuit, hydraulic oil in described fuel tank is delivered to by loading oil circuit and detection oil circuit and is loaded in cylinder and tested oil hydraulic cylinder by described Oil-temperature control loop respectively, by recovery oil circuit, the discharge oil of tested oil hydraulic cylinder and loading hydraulic cylinder is delivered in described fuel tank again, described loading oil circuit drive load oil hydraulic cylinder, described detection oil circuit drives tested liquid cylinder pressure, described tested liquid cylinder pressure is connected with rapid pipe joint logical between loading hydraulic cylinder, it is characterized in that:
Described Oil-temperature control loop is picked out from fuel tank by oil pipe, two branch roads are divided into lead to cooler and heater respectively after the secondary filter of band signal transmitter, again the oil outlet of described cooler and heater is incorporated to proportion adjustment mixing valve, delivers to loading oil circuit and detection oil circuit by the outlet of described proportion adjustment mixing valve respectively through oil purifier;
Described loading oil circuit comprises the gear pump, rectification oil circuit and the loading hydraulic cylinder that connect successively through oil pipe, second, four interfaces of described rectification oil circuit are connected with the oil inlet and outlet of described loading hydraulic cylinder respectively, described gear delivery side of pump is connected with the 3rd interface of described rectification oil circuit through oil pipe, and the first interface of described rectification oil circuit is connected with described recovery oil circuit through pressurization relief valve;
Described detection oil circuit is connected with one-way valve through limit pressure type variable pump by oil pipe, described one-way valve is connected with the first import of described asymmetric selector valve, first outlet of described asymmetric selector valve is connected with the filler opening of tested oil hydraulic cylinder by bi-bit bi-pass selector valve through tested pressure pipeline, the oil outlet of described tested oil hydraulic cylinder is connected with the second import of asymmetric selector valve by one-way valve through tested pressure relief pipe, and the bi-bit bi-pass selector valve and one-way valve of described tested pressure pipeline and tested pressure relief pipe are all parallel with a series flow control valve; Described asymmetric selector valve second exports and is connected with described recovery oil circuit by the road;
Described recovery oil circuit comprises the tested recovery oil circuit being arranged on the outlet of described pressure limiting variable pump and oil circuit is reclaimed in the loading being arranged on described gear pump outlet, described tested recovery oil circuit is provided with safety valve, the relief valve that oil circuit is installed is reclaimed in described loading, is connected after oil circuit parallel connection is reclaimed in described tested recovered oil and loading through reclaiming oil pipe with described fuel tank.
2. cylinder bench system according to claim 1, is characterized in that: the secondary filter of the band signal transmitter on described Oil-temperature control loop is also provided with a parallel branch, and described branch road is provided with one-way valve and pressure relay.
3. cylinder bench system according to claim 1, is characterized in that: the pressure gauge export pipeline of the in-line of described loading hydraulic cylinder and tested liquid cylinder pressure and gear pump and limit pressure type variable pump being all provided with band pressure meter switch.
4. cylinder bench system according to claim 1, is characterized in that: described gear pump and limit pressure type variable pump drive by motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410430823.8A CN104314924A (en) | 2014-08-27 | 2014-08-27 | Hydraulic cylinder testing bed system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410430823.8A CN104314924A (en) | 2014-08-27 | 2014-08-27 | Hydraulic cylinder testing bed system |
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| CN104314924A true CN104314924A (en) | 2015-01-28 |
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| CN201410430823.8A Pending CN104314924A (en) | 2014-08-27 | 2014-08-27 | Hydraulic cylinder testing bed system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298991A (en) * | 2015-11-18 | 2016-02-03 | 西安建筑科技大学 | Experiment platform and experiment method for virtual loading and controlling of engineering mechanical work conditions |
| CN109268329A (en) * | 2018-10-22 | 2019-01-25 | 清华大学 | A kind of mixing valve for soft robot |
| CN109780005A (en) * | 2019-01-21 | 2019-05-21 | 燕山大学 | A kind of load simulation system and control method of multi-way valve |
| CN109854557A (en) * | 2019-03-21 | 2019-06-07 | 福建工程学院 | A kind of double pump with energy-saving pressure preload unit directly drives electric hydrostatic actuator |
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| US3977240A (en) * | 1971-02-01 | 1976-08-31 | Eichinger Daniel B | Engine test system |
| CN2123644U (en) * | 1992-05-04 | 1992-12-02 | 中国农业机械化科学研究院 | Constant temp. controlled hydraulic oil device |
| CN101603527A (en) * | 2009-06-11 | 2009-12-16 | 中国矿业大学 | A kind of emulsion pump testing system |
| CN103511401A (en) * | 2013-10-23 | 2014-01-15 | 陕西盛迈石油有限公司 | Hydraulic motor test bench |
| CN103711685A (en) * | 2012-09-29 | 2014-04-09 | 成都金福天下投资管理有限公司 | Hydraulic loading testing device |
-
2014
- 2014-08-27 CN CN201410430823.8A patent/CN104314924A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3977240A (en) * | 1971-02-01 | 1976-08-31 | Eichinger Daniel B | Engine test system |
| CN2123644U (en) * | 1992-05-04 | 1992-12-02 | 中国农业机械化科学研究院 | Constant temp. controlled hydraulic oil device |
| CN101603527A (en) * | 2009-06-11 | 2009-12-16 | 中国矿业大学 | A kind of emulsion pump testing system |
| CN103711685A (en) * | 2012-09-29 | 2014-04-09 | 成都金福天下投资管理有限公司 | Hydraulic loading testing device |
| CN103511401A (en) * | 2013-10-23 | 2014-01-15 | 陕西盛迈石油有限公司 | Hydraulic motor test bench |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298991A (en) * | 2015-11-18 | 2016-02-03 | 西安建筑科技大学 | Experiment platform and experiment method for virtual loading and controlling of engineering mechanical work conditions |
| CN105298991B (en) * | 2015-11-18 | 2017-05-17 | 西安建筑科技大学 | Experiment platform and experiment method for virtual loading and controlling of engineering mechanical work conditions |
| CN109268329A (en) * | 2018-10-22 | 2019-01-25 | 清华大学 | A kind of mixing valve for soft robot |
| CN109780005A (en) * | 2019-01-21 | 2019-05-21 | 燕山大学 | A kind of load simulation system and control method of multi-way valve |
| CN109780005B (en) * | 2019-01-21 | 2020-04-21 | 燕山大学 | Load simulation system and control method of multi-way valve |
| CN109854557A (en) * | 2019-03-21 | 2019-06-07 | 福建工程学院 | A kind of double pump with energy-saving pressure preload unit directly drives electric hydrostatic actuator |
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Application publication date: 20150128 |