CN103591083A - Hydraulic test stand for oil cylinders - Google Patents
Hydraulic test stand for oil cylinders Download PDFInfo
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- CN103591083A CN103591083A CN201210295424.6A CN201210295424A CN103591083A CN 103591083 A CN103591083 A CN 103591083A CN 201210295424 A CN201210295424 A CN 201210295424A CN 103591083 A CN103591083 A CN 103591083A
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Abstract
The invention discloses a hydraulic test stand for oil cylinders. Power elements such as a hydraulic pump and a motor, control elements such as an electromagnetic overflow valve, an electromagnetic reversing valve, a one-way valve, a hydraulic control one-way valve, a pressure-reducing valve and a pressure relay, and auxiliary elements such as an oil tank, a cooler, a liquidometer and a temperature sensor are connected with a tested stand by a system through oil circuits. The pressure relay is arranged at the front end of the oil circuit entering the test stand for the oil cylinders, can feed back the magnitude of the pressure of a feedback system, and sends out electric signals; an electrical linkage switch is arranged between a high-pressure system and a low-pressure system, so that the high-pressure system and the low-pressure system cannot work simultaneously at ordinary time, and only can work together under the condition of flow combination; and the high-pressure system and the low-pressure system of the test stand can respectively output small high-pressure flow and large low-pressure flow, so that oil flow required for different work conditions of the experiment can be met.
Description
Technical field
The present invention relates to Hydraulic Field, be specifically related to a kind of oil cylinder hydraulic test stand.
Background technique
Oil cylinder is a kind of hydraulic actuator, and it can become mechanical energy to export hydraulic energy transfer by the form of straight reciprocating motion, therefore used in a large number in hydraulic equipment.A machinery that oil cylinder is housed needs the oil cylinder of a function admirable to guarantee its work usability, yet how to test oil cylinder, how convenient, accurately to test the non-easy thing ，Shi oil cylinder manufacturer of enterprise of performance of oil cylinder problem.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of oil cylinder hydraulic test stand, the back and forth test such as running test, inside and outside fuel permeation test, buffer test, shock test under the minimum cracking pressure, pressure test, low pressure of test oil cylinder.The high-pressure system of test stand, low service system be exportable high pressure small flow and low pressure and mass flow respectively, to meet the required oil stream of different experiments operating mode.Test stand also adopts input electrical signal to control experimentation, and can to oil liquid temperature overheated excessively cold, filter precision is low, the too low problem of liquid level is made respective handling or made alarm, therefore accuracy that can proof test.
For achieving the above object, technological scheme of the present invention is as follows:
A test stand, comprises fuel tank, and fuel tank is connected in parallel to high-pressure system and low service system by pipeline, and described high-pressure system and low service system are connected with oil cylinder test bench; Described high-pressure system and low service system also connect fuel tank by circulating filtration, cooling system.
Preferably, between described fuel tank and high-pressure system, be disposed with high-pressure service pump and the first one-way valve, between described fuel tank and low service system, be disposed with low pressure pump and the second one-way valve.
Preferably, on described fuel tank, be provided with fluid level controller and temperature controller, and enter on the branch road of oil cylinder test bench and be provided with pressure relay.
Preferably, the fluid of described high-pressure system output high pressure, small flow, comprises the proportional pressure control valve and the relief valve that are arranged in parallel, and described proportional pressure control valve is all connected with the first solenoid directional control valve with relief valve, thereby communicates with oil cylinder test bench.
Preferably, the fluid of described low service system output low-pressure, large flow, comprise the second solenoid directional control valve and the 3rd solenoid directional control valve that are arranged in parallel, the second solenoid directional control valve in parallel and the outlet of the oil circuit of the 3rd solenoid directional control valve are connected with Pilot operated check valve, import is connected with electromagnetic relief valve, and described the second solenoid directional control valve is also connected with reduction valve.
Preferably, described the 3rd solenoid directional control valve is the selector valve of two.
By technique scheme, the invention has the beneficial effects as follows:
Adopt input electrical signal form to test tested oil cylinder, at test bench oil circuit front end, be provided with pressure relay, reponse system pressure is big or small in time, and sends electrical signal;
Electric between high-pressure system and low service system is gang switch, has effectively intercepted high and low pressure system and has worked simultaneously, only in the situation of interflow, could work together;
At test stand valve member, select the common switch type valves that adopt more, greatly reduce the manufacture cost of test stand, but on test performance, can meet the detection of the manufacturer of enterprise to non-Precise Oil Cylinder, oil cylinder outgoing is made to guarantee;
And test stand can detect the oil cylinder in dynamic load situation, oil cylinder material can stress improve and produce fragility problem suddenly, has so more fully detected oil cylinder performance.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is fundamental diagram of the present invention.
Fig. 2 is high-pressure system fundamental diagram of the present invention.
Fig. 3 is low service system fundamental diagram of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
With reference to Fig. 1, a kind of oil cylinder hydraulic test stand, comprises fuel tank, and fuel tank is connected in parallel to high-pressure system and low service system by pipeline, and described high-pressure system and low service system are connected with oil cylinder test bench; Described high-pressure system and low service system also connect fuel tank by circulating filtration, cooling system.
Preferably, between described fuel tank and high-pressure system, be disposed with high-pressure service pump 1 and the first one-way valve 2, between described fuel tank and low service system, be disposed with low pressure pump 3 and the second one-way valve 4.
Preferably, on described fuel tank, be provided with fluid level controller 5 and temperature controller 6, and enter on the branch road of oil cylinder test bench and be provided with pressure relay 7.
Preferably, the fluid of described high-pressure system output high pressure, small flow, comprises the proportional pressure control valve 8 and relief valve 9 that are arranged in parallel, and described proportional pressure control valve 8 is all connected with the first solenoid directional control valve 10 with relief valve 9, thereby communicates with oil cylinder test bench.
Preferably, the fluid of described low service system output low-pressure, large flow, comprise the second solenoid directional control valve 13 and the 3rd solenoid directional control valve 16 that are arranged in parallel, the second solenoid directional control valve 13 in parallel and the outlet of the oil circuit of the 3rd solenoid directional control valve 16 are connected with Pilot operated check valve 14, import is connected with electromagnetic relief valve 12, and described the second solenoid directional control valve also 13 is connected with reduction valve 15.
The fluid that described fluid level controller 5 detects in fuel tank, has three control points, is respectively minimum liquid level, middle liquid level and the highest liquid level.When lower than minimum liquid level or higher than the highest liquid level, fluid level controller all can send signal alarm.
The oil temperature that temperature controller 6 detects in fuel tank, can start cooling unit or heating equipment by timely sender according to the oil temperature detecting, and fuel tank is carried out to cooling or heating.
The effect of the first one-way valve 2 and the second one-way valve 4 is in order to prevent that pressure oil from flowing backwards, and prevents that oil hydraulic pump is damaged.
Pressure relay 7, can set respectively two control points, and oil circuit is carried out to Pressure testing, when reaching setup pressure value, pressure relay sender, inspire electromagnet, dead electricity situation.
With reference to Fig. 2, high-pressure system, the fluid of output high pressure small flow, mainly by relief valve 9, proportional pressure control valve 8, the first solenoid directional control valve 10, formed, comprise the proportional pressure control valve 8 and relief valve 9 that are arranged in parallel, described proportional pressure control valve 8 is all connected with the first solenoid directional control valve 10 with relief valve 9, thereby communicates with oil cylinder test bench.
Relief valve 9 setting values will be high-pressure system Maximum safe pressure higher than the force value of proportional pressure control valve 8, and when system pressure surpasses relief valve 9 setting value, relief valve 9 is opened fluid overflow oil-feed tank, thereby whole system is played a protective role.
Proportional pressure control valve 8 can be transferred to system maximum pressure value from 0.5MPa, and can progressively load reach test required force value.For example, in the test of minimum cracking pressure, by input electrical signal, change the pressure of proportional pressure control valve 8, thus height-adjusting system pressure progressively, and when oil cylinder just starts, this force value is minimum cracking pressure.
The first solenoid directional control valve 10 plays and switches oil circuit or meta zero leakage effect in high-pressure system, during as pressure test or minimum starting pressure test, the first electromagnet D1 of the first solenoid directional control valve 10 and the second electromagnet D2 impel valve to commutate by obtaining electric dead electricity, thereby provide tested oil cylinder enough pressure oil liquids; And when testing while working for low service system, the electromagnet of the first solenoid directional control valve 10 must not electricity in meta state, now enter the fluid of high-pressure system by the first solenoid directional control valve 10 blocking-up, thereby make high-pressure system inoperative.
With reference to Fig. 3, low service system, the fluid of the large flow of general output low-pressure, mainly by the second solenoid directional control valve 13, reduction valve 15, electromagnetic relief valve 12, Pilot operated check valve 14, the 3rd solenoid directional control valve 16 forms, comprise the second solenoid directional control valve 13 and the 3rd solenoid directional control valve 16 that are arranged in parallel, the second in parallel solenoid directional control valve 13 and the outlet of the oil circuit of the 3rd solenoid directional control valve 16 are connected with Pilot operated check valve 14, and import is connected with electromagnetic relief valve 12, and described the second solenoid directional control valve also 13 is connected with reduction valve 15.
The second effect of solenoid directional control valve 13 in low service system be when switching oil circuit and meta P chamber intercept, A, logical T chamber, B chamber.It is identical with the first solenoid directional control valve 10 that the second solenoid directional control valve 13 switches oil circuit function; And its Median Function to be the fluid that makes low service system enter valve P mouth be blocked, and A, the fluid in B chamber, by T chamber, runner hole oil sump tank, guarantees that Pilot operated check valve 14 plays hydraulic lock effect well like this.
The 3rd solenoid directional control valve 16 is selector valves of one two, and when the 5th electromagnet D5 of the 3rd solenoid directional control valve 16 obtains when electric, the X mouth of Pilot operated check valve 14 has fluid to enter, and Pilot operated check valve 14 is opened; And the first electromagnet D1, the second electromagnet D2, the 5th electromagnet D5 are switch, when the first electromagnet D1, the second electromagnet D2 any when electric, the 5th electromagnet D5 must electricity, can effectively cut off high low pressure oil circuit like this.
12 pairs of low service systems of electromagnetic relief valve play a protective role, and it sets the maximum pressure value of low service system, and when system is worth higher than this, relief valve is opened fluid overflow oil-feed tank; When the 6th electromagnet D6 dead electricity, low service system, in unloaded state, has been avoided the unnecessary power loss of low pressure pump.
Pilot operated check valve 14 plays the effect that cuts off high and low pressure system.When high-pressure system is worked, for fear of the interference that is subject to low service system, the 5th electromagnet D5 dead electricity of the 3rd solenoid directional control valve 16, closes Pilot operated check valve 14, therefore can intercept well high and low pressure system.
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. an oil cylinder hydraulic test stand, comprises fuel tank, it is characterized in that, fuel tank is connected in parallel to high-pressure system and low service system by pipeline, and described high-pressure system and low service system are connected with oil cylinder test bench; Described high-pressure system and low service system also connect fuel tank by circulating filtration, cooling system.
2. a kind of oil cylinder hydraulic test stand according to claim 1, is characterized in that: between described fuel tank and high-pressure system, be disposed with high-pressure service pump and the first one-way valve, be disposed with low pressure pump and the second one-way valve between described fuel tank and low service system.
3. a kind of oil cylinder hydraulic test stand according to claim 1, is characterized in that: on described fuel tank, be provided with fluid level controller and temperature controller, and enter on the branch road of oil cylinder test bench and be provided with pressure relay.
4. a kind of oil cylinder hydraulic test stand according to claim 1, it is characterized in that: the fluid of described high-pressure system output high pressure, small flow, comprise the proportional pressure control valve and the relief valve that are arranged in parallel, described proportional pressure control valve is all connected with the first solenoid directional control valve with relief valve, thereby communicates with oil cylinder test bench.
5. a kind of oil cylinder hydraulic test stand according to claim 1, it is characterized in that: the fluid of described low service system output low-pressure, large flow, comprise the second solenoid directional control valve and the 3rd solenoid directional control valve that are arranged in parallel, the second solenoid directional control valve in parallel and the outlet of the oil circuit of the 3rd solenoid directional control valve are connected with Pilot operated check valve, import is connected with electromagnetic relief valve, and described the second solenoid directional control valve is also connected with reduction valve.
6. according to a kind of oil cylinder hydraulic test stand described in right 5, it is characterized in that: described the 3rd solenoid directional control valve is the selector valve of two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210295424.6A CN103591083A (en) | 2012-08-17 | 2012-08-17 | Hydraulic test stand for oil cylinders |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210295424.6A CN103591083A (en) | 2012-08-17 | 2012-08-17 | Hydraulic test stand for oil cylinders |
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| CN103591083A true CN103591083A (en) | 2014-02-19 |
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| CN201210295424.6A Pending CN103591083A (en) | 2012-08-17 | 2012-08-17 | Hydraulic test stand for oil cylinders |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836026A (en) * | 2014-03-27 | 2014-06-04 | 徐州徐工液压件有限公司 | Extending arm oil cylinder test device and hydraulic control system thereof |
| CN105570211A (en) * | 2015-12-25 | 2016-05-11 | 上海华龙测试仪器股份有限公司 | Controlling system for high-pressure oil source |
| CN107100914A (en) * | 2017-05-02 | 2017-08-29 | 广州飞机维修工程有限公司 | A kind of airline carriers of passengers is counter to push away hydraulic actuation system testboard |
| CN108457934A (en) * | 2018-04-20 | 2018-08-28 | 苏州恩必技精密电气有限公司 | A kind of hydraulic slip ring integrated experimental device and its application method |
| CN108872546A (en) * | 2017-05-08 | 2018-11-23 | 沈阳航达机载设备有限公司 | A kind of quality detection device suitable for high pressure and low pressure oil liquid |
| CN109026907A (en) * | 2018-10-26 | 2018-12-18 | 杭州先力液压机械有限公司 | Oil cylinder special test platform and its test method |
| CN111458113A (en) * | 2019-01-22 | 2020-07-28 | 宁波奕力电磁技术有限公司 | Test system of CDC bumper shock absorber solenoid valve |
| CN112858029A (en) * | 2021-03-10 | 2021-05-28 | 深圳市特种设备安全检验研究院 | High-pressure test device and test method for pipeline rupture valve |
| CN113217488A (en) * | 2021-04-21 | 2021-08-06 | 沈阳海瑞琦液压科技有限公司 | System and method for measuring minimum starting pressure of hydraulic oil cylinder |
| CN115013369A (en) * | 2022-07-12 | 2022-09-06 | 中国铁路设计集团有限公司 | Synchronous hydraulic system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836026A (en) * | 2014-03-27 | 2014-06-04 | 徐州徐工液压件有限公司 | Extending arm oil cylinder test device and hydraulic control system thereof |
| CN103836026B (en) * | 2014-03-27 | 2016-04-27 | 徐州徐工液压件有限公司 | A kind of semi-girder cylinder testing device and hydraulic control system thereof |
| CN105570211A (en) * | 2015-12-25 | 2016-05-11 | 上海华龙测试仪器股份有限公司 | Controlling system for high-pressure oil source |
| CN105570211B (en) * | 2015-12-25 | 2017-06-23 | 上海华龙测试仪器股份有限公司 | A kind of high pressure fuel source control system |
| CN107100914A (en) * | 2017-05-02 | 2017-08-29 | 广州飞机维修工程有限公司 | A kind of airline carriers of passengers is counter to push away hydraulic actuation system testboard |
| CN108872546A (en) * | 2017-05-08 | 2018-11-23 | 沈阳航达机载设备有限公司 | A kind of quality detection device suitable for high pressure and low pressure oil liquid |
| CN108457934A (en) * | 2018-04-20 | 2018-08-28 | 苏州恩必技精密电气有限公司 | A kind of hydraulic slip ring integrated experimental device and its application method |
| CN109026907A (en) * | 2018-10-26 | 2018-12-18 | 杭州先力液压机械有限公司 | Oil cylinder special test platform and its test method |
| CN109026907B (en) * | 2018-10-26 | 2023-12-19 | 浙江匠心液压科技有限公司 | Test bench special for oil cylinder and test method thereof |
| CN111458113A (en) * | 2019-01-22 | 2020-07-28 | 宁波奕力电磁技术有限公司 | Test system of CDC bumper shock absorber solenoid valve |
| CN112858029A (en) * | 2021-03-10 | 2021-05-28 | 深圳市特种设备安全检验研究院 | High-pressure test device and test method for pipeline rupture valve |
| CN113217488A (en) * | 2021-04-21 | 2021-08-06 | 沈阳海瑞琦液压科技有限公司 | System and method for measuring minimum starting pressure of hydraulic oil cylinder |
| CN113217488B (en) * | 2021-04-21 | 2024-04-26 | 沈阳海瑞琦液压科技有限公司 | System and method for measuring minimum starting pressure of hydraulic cylinder |
| CN115013369A (en) * | 2022-07-12 | 2022-09-06 | 中国铁路设计集团有限公司 | Synchronous hydraulic system |
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Application publication date: 20140219 |