CN202768536U - Oil cylinder hydraulic test bench - Google Patents
Oil cylinder hydraulic test bench Download PDFInfo
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- CN202768536U CN202768536U CN 201220413059 CN201220413059U CN202768536U CN 202768536 U CN202768536 U CN 202768536U CN 201220413059 CN201220413059 CN 201220413059 CN 201220413059 U CN201220413059 U CN 201220413059U CN 202768536 U CN202768536 U CN 202768536U
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Abstract
The utility model discloses an oil cylinder hydraulic test bench. A system connects power elements such as a hydraulic pump and a motor, control elements such as an electromagnetic relief valve, an electromagnetic directional valve, a one-way valve, a hydraulic control one-way valve, a reducing valve and a pressure relay, auxiliary elements such as an oil tank, a cooler, a liquidometer and temperature sensor, and a bench to be tested together through an oil line connection. The pressure relay is arranged at the front end of an oil line entering the oil cylinder test bench and can achieve feedback of the pressure degree the system timely and can send an electrical signal. An electric device between a high-pressure system and a low-pressure system is a linkage switch, simultaneous working of the high-pressure system and the low-pressure system is effectively avoided, and only on the condition of collaboration, simultaneous working can be achieved. The high-pressure system and the low-pressure system of the test bench can respectively output high-pressure low flow and low-pressure high flow so that oil flow needed by different test working conditions can be achieved.
Description
Technical field
The utility model relates to Hydraulic Field, is 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 hydraulic energy transfer mechanical energy output by the form of straight reciprocating motion, therefore used in a large number in hydraulic equipment.The 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, and the non-easy thing of performance how to make things convenient for, accurately to test oil cylinder is the manufacturer's of oil cylinder enterprise problem.
The model utility content
The technical problems to be solved in the utility model provides a kind of oil cylinder hydraulic test stand, the back and forth tests such as running test, inside and outside fuel permeation test, buffer test, shock test under the minimum cracking pressure of test oil cylinder, pressure test, the low pressure.The high-pressure system of test stand, low service system be exportable high pressure small flow and low pressure and mass flow respectively, to satisfy 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, liquid level is crossed low problem and made respective handling or make alarm, therefore accuracy that can proof test.
For achieving the above object, the technical solution of the utility model is as follows:
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 the oil cylinder test bench; Described high-pressure system and low service system also connect fuel tank by circulating filtration, cooling system.
Preferably, be disposed with high-pressure service pump and the first one-way valve between described fuel tank and the high-pressure system, be disposed with low pressure pump and the second one-way valve between described fuel tank and the low service system.
Preferably, be provided with fluid level controller and temperature controller on the described fuel tank, 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 all is connected with the first solenoid directional control valve with relief valve, thereby communicates with the 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 then is connected with electromagnetic relief valve, and described the second solenoid directional control valve also is connected with reduction valve.
Preferably, described the 3rd solenoid directional control valve is one two selector valve.
By technique scheme, the beneficial effects of the utility model are:
Adopt the input electrical signal form that tested oil cylinder is tested, be provided with pressure relay at test bench oil circuit front end, in time reponse system pressure is big or small, and sends electrical signal;
Electric between high-pressure system and the low service system is gang switch, has effectively intercepted the high and low pressure system and has worked simultaneously, only could work together in the situation of interflow;
Select adopt common switch type valves at the test stand valve member more, greatly reduce the manufacture cost of test stand, but on test performance, can satisfy the manufacturer of enterprise to the detection of non-Precise Oil Cylinder, the oil cylinder outgoing is made guarantee;
And test stand can detect the oil cylinder in the dynamic load situation, and oil cylinder material meeting stress suddenly improves and produces the fragility problem, has so more fully detected the oil cylinder performance.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is fundamental diagram of the present utility model.
Fig. 2 is high-pressure system fundamental diagram of the present utility model.
Fig. 3 is low service system fundamental diagram of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
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 the oil cylinder test bench; Described high-pressure system and low service system also connect fuel tank by circulating filtration, cooling system.
Preferably, be disposed with high-pressure service pump 1 and the first one-way valve 2 between described fuel tank and the high-pressure system, be disposed with low pressure pump 3 and the second one-way valve 4 between described fuel tank and the low service system.
Preferably, be provided with fluid level controller 5 and temperature controller 6 on the described fuel tank, 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 all is connected with the first solenoid directional control valve 10 with relief valve 9, thereby communicates with the 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 then 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 the fuel tank has three control points, is respectively minimum liquid level, middle liquid level and the highest liquid level.When being lower than minimum liquid level or be higher than the highest liquid level, fluid level controller all can send signal alarm.
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 be set respectively two control points, and oil circuit is carried out Pressure testing, when reaching setup pressure value, the pressure relay sender, inspire electromagnet, the dead electricity situation.
With reference to Fig. 2, high-pressure system, the fluid of output high pressure small flow, mainly formed by relief valve 9, proportional pressure control valve 8, the first solenoid directional control valve 10, comprise the proportional pressure control valve 8 and relief valve 9 that are arranged in parallel, described proportional pressure control valve 8 all is connected with the first solenoid directional control valve 10 with relief valve 9, thereby communicates with the oil cylinder test bench.
Relief valve 9 setting values will be higher than the force value of proportional pressure control valve 8, are the high-pressure system Maximum safe pressure, and when system pressure surpassed relief valve 9 setting value, relief valve 9 was opened fluid overflow oil-feed tank, thereby whole system is played a protective role.
Proportional pressure control valve 8 can be transferred to system's maximum pressure value from 0.5MPa, and can progressively load reach the test required force value.For example in the test of minimum cracking pressure, change the pressure of proportional pressure control valve 8 by input electrical signal, thus height-adjusting system pressure progressively, and when oil cylinder just started, this force value then was minimum cracking pressure.
The first solenoid directional control valve 10 plays in high-pressure system and switches oil circuit or meta zero leakage effect, 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 the valve commutation by getting electric dead electricity, thereby provide tested oil cylinder enough pressure oil liquids; And when testing when working for low service system, the electromagnet of the first solenoid directional control valve 10 must not be in the meta state by electricity, enters the fluid of high-pressure system this moment by 10 blocking-up of the first solenoid directional control valve, thereby makes 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 then 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 the P chamber intercept, A, the B chamber leads to the T chamber.It is identical with the first solenoid directional control valve 10 that the second solenoid directional control valve 13 switches the 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 guarantees like this that then by T chamber, runner hole oil sump tank Pilot operated check valve 14 plays the hydraulic lock effect well.
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 gets 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 the 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 was higher than this value, relief valve was opened fluid overflow oil-feed tank; When the 6th electromagnet D6 dead electricity, low service system is in unloaded state, has 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 was worked, for fear of the interference that is subjected to low service system, the 5th electromagnet D5 dead electricity of the 3rd solenoid directional control valve 16 was closed Pilot operated check valve 14, therefore can intercept well the high and low pressure system.
Above demonstration and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model 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 the 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: be disposed with high-pressure service pump and the first one-way valve between described fuel tank and the high-pressure system, be disposed with low pressure pump and the second one-way valve between described fuel tank and the low service system.
3. a kind of oil cylinder hydraulic test stand according to claim 1 is characterized in that: be provided with fluid level controller and temperature controller on the described fuel tank, 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 all is connected with the first solenoid directional control valve with relief valve, thereby communicates with the 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 then is connected with electromagnetic relief valve, and described the second solenoid directional control valve also is connected with reduction valve.
6. according to right 5 described a kind of oil cylinder hydraulic test stands, it is characterized in that: described the 3rd solenoid directional control valve is one two selector valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220413059 CN202768536U (en) | 2012-08-17 | 2012-08-17 | Oil cylinder hydraulic test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220413059 CN202768536U (en) | 2012-08-17 | 2012-08-17 | Oil cylinder hydraulic test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768536U true CN202768536U (en) | 2013-03-06 |
Family
ID=47775116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220413059 Expired - Fee Related CN202768536U (en) | 2012-08-17 | 2012-08-17 | Oil cylinder hydraulic test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768536U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591083A (en) * | 2012-08-17 | 2014-02-19 | 上海立新液压有限公司 | Hydraulic test stand for oil cylinders |
| CN104614193A (en) * | 2014-12-17 | 2015-05-13 | 中国石油天然气股份有限公司 | Analog well test system |
-
2012
- 2012-08-17 CN CN 201220413059 patent/CN202768536U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591083A (en) * | 2012-08-17 | 2014-02-19 | 上海立新液压有限公司 | Hydraulic test stand for oil cylinders |
| CN104614193A (en) * | 2014-12-17 | 2015-05-13 | 中国石油天然气股份有限公司 | Analog well test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20160817 |