CN203500138U - Hydraulic control system for reciprocating test bed - Google Patents
Hydraulic control system for reciprocating test bed Download PDFInfo
- Publication number
- CN203500138U CN203500138U CN201320545739.1U CN201320545739U CN203500138U CN 203500138 U CN203500138 U CN 203500138U CN 201320545739 U CN201320545739 U CN 201320545739U CN 203500138 U CN203500138 U CN 203500138U
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- valve
- hydraulic control
- oil hydraulic
- control system
- oil
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Abstract
The utility model discloses a hydraulic control system for a reciprocating test bed, and the hydraulic control system comprises a reversing valve, a one-way speed governing valve and a hydraulic control one-way valve; a first work port and a second work port of the reversing valve are respectively communicated with the rod-less cavity and the rod cavity of a hydraulic cylinder; a third work port and a fourth work port of the reversing valve are respectively communicated with an oil tank and the oil outlet of a hydraulic pump; the oil outlet of the hydraulic pump is provided with an energy accumulator; the one-way speed governing valve is arranged on a pipeline between the first work port of the reversing valve and the rod-less cavity of the hydraulic cylinder; the rod-less cavity and the rod cavity of the hydraulic cylinder are respectively communicated with the oil inlet and the oil outlet of the hydraulic control one-way valve; the hydraulic control oil port of the hydraulic control one-way valve is respectively communicated with the first work port of the reversing valve and the oil tank. The hydraulic control system for the reciprocating test bed has the characteristics of reasonable design, good use effect, high automation degree, low operation cost, mechanical, electrical and liquid integral design, high intelligence, stability and reliability in operation, and long service life.
Description
Technical field
The utility model belongs to hydraulic transmission technology field, relates to a kind of hydraulic control system, is specifically related to a kind of hydraulic control system for Cyclic test platform.
Background technique
Cyclic test refers to that unit under test moves back and forth under external force.The function of Cyclic test platform is the working condition of certain parts of simulation, with the frequency of 5-50 time/min, it is carried out to compression testing, to examine the reliability of unit under test inner seal.Common Cyclic test platform is generally realized by connecting rod, slidercrank mechanism, crankrocker mechanism, eccentric mechanism or cam spring mechanism, these mechanism's ubiquity complex structures, the problems such as running state is undesirable, the Cyclic test platform of hydraulic drive type has solved the problems referred to above well.
Model utility content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of Cyclic test platform hydraulic control system is provided, and it is reasonable in design, and using effect is good, automaticity is high, and operating cost is low, mechanical-electrical-hydraulic integration design, intelligent degree is high, stable and reliable operation, long service life.
For achieving the above object, the technical solution adopted in the utility model is: a kind of Cyclic test platform hydraulic control system, comprise fuel tank, for system provides the oil hydraulic pump of high pressure liquid force feed and drives the reciprocating oil hydraulic cylinder of unit under test, it is characterized in that: also comprise selector valve, one-way speed-regulating valve and Pilot operated check valve, the first working port of described selector valve is communicated with rodless cavity and the rod chamber of described oil hydraulic cylinder respectively with the second working port, the 3rd working port of described selector valve is communicated with the oil outlet of described fuel tank and described oil hydraulic pump respectively with the 4th working port, the oil outlet place of described oil hydraulic pump is provided with accumulator, on the first working port of described selector valve and the pipeline between the rodless cavity of described oil hydraulic cylinder, be provided with described one-way speed-regulating valve, the rodless cavity of described oil hydraulic cylinder and rod chamber are communicated with filler opening and the oil outlet of described Pilot operated check valve respectively, the hydraulic control hydraulic fluid port of described Pilot operated check valve is communicated with the first working port and the fuel tank of described selector valve respectively, on the second working port of described selector valve and the pipeline between the rod chamber of described oil hydraulic cylinder, be provided with one-way valve two.
Above-mentioned Cyclic test platform hydraulic control system, is characterized in that: described oil hydraulic pump outlet port is provided with one-way valve one and relief valve.
Above-mentioned Cyclic test platform hydraulic control system, is characterized in that: described oil hydraulic pump inlet is provided with oil purifier.
Above-mentioned Cyclic test platform hydraulic control system, is characterized in that: described selector valve is 3-position 4-way solenoid directional control valve, and described Pilot operated check valve is the formula Pilot operated check valve that leaks.
The utility model compared with prior art has the following advantages:
(1) this Cyclic test platform is reasonable by hydraulic control system design, and oil hydraulic cylinder has differential connection speed accelerating circuits, and using effect is good.
(2) this Cyclic test platform is high by hydraulic control system automaticity, and the automatic control program according to the design of Cyclic test platform feature, can make the automatic operation of equipment, and operating cost is low.
(3) hydraulic control system adopts mechanical-electrical-hydraulic integration design for this Cyclic test platform, and its intelligent degree is very high, during work without manual tune.
(4) this Cyclic test platform with hydraulic control system in running without rigid impulse, stable and reliable operation, long service life.
Below by drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is hydraulic control principle schematic of the present utility model.
Description of reference numerals:
1-fuel tank; 2-oil hydraulic pump; 3-one-way valve one;
4-accumulator; 5-selector valve; 6-one-way speed-regulating valve;
7-oil hydraulic cylinder; 8-Pilot operated check valve; 9-one-way valve two;
10-relief valve; 11-oil purifier.
Embodiment
A kind of Cyclic test platform hydraulic control system as shown in Figure 1, comprises fuel tank 1, for system provides the oil hydraulic pump 2 of high pressure liquid force feed and drives the reciprocating oil hydraulic cylinder 7 of unit under test, also comprises selector valve 5, one-way speed-regulating valve 6 and Pilot operated check valve 8; The C mouth of described selector valve 5 is communicated with rodless cavity and the rod chamber of described oil hydraulic cylinder 7 respectively with D mouth, the P mouth of described selector valve 5 is communicated with the oil outlet of described fuel tank 1 and described oil hydraulic pump 2 respectively with O mouth, the oil outlet place of described oil hydraulic pump 2 is provided with accumulator 4, and accumulator 4 can not play the effect of energy storage pressurize when oil hydraulic pump 2 is not worked.On pipeline between the C mouth of described selector valve 5 and the rodless cavity of described oil hydraulic cylinder 7, be provided with described one-way speed-regulating valve 6, the rodless cavity of described oil hydraulic cylinder 7 and rod chamber are communicated with filler opening and the oil outlet of described Pilot operated check valve 8 respectively, the hydraulic control hydraulic fluid port of described Pilot operated check valve 8 is communicated with C mouth and the fuel tank 1 of described selector valve 5 respectively, on the pipeline between the D mouth of described selector valve 5 and the rod chamber of described oil hydraulic cylinder 7, is provided with one-way valve 29.
In the present embodiment, described oil hydraulic pump 2 outlet ports are provided with one-way valve 1 and relief valve 10.
In the present embodiment, described oil hydraulic pump 2 inlets are provided with oil purifier 11.
In the present embodiment, described selector valve 5 is 3-position 4-way solenoid directional control valve, and described Pilot operated check valve 8 is the formula Pilot operated check valve that leaks.
The utility model Cyclic test platform by the working procedure of hydraulic control system is:
When 5 left connecting systems of selector valve, oil hydraulic pump 2 output high-pressure and hydraulic oil contents are two-way: a road enters the rodless cavity of oil hydraulic cylinder 7 through one-way valve 1, the left position of selector valve 5 and one-way speed-regulating valve 6, thereby the piston rod of oil hydraulic cylinder 7 is stretched out; Another road enters the X hydraulic control hydraulic fluid port of Pilot operated check valve 8, open the spool of Pilot operated check valve 8, the hydraulic oil of oil hydraulic cylinder 7 rod chambers flows to A mouth from the B mouth of Pilot operated check valve 8, finally enter in oil hydraulic cylinder 7 rodless cavities, promote piston rod F.F., form differential connection and return, realize the Fast Compression of tested nose.
When 5 right connecting systems of selector valve, oil hydraulic pump 2 output high pressure liquid force feeds are after one-way valve 29, enter oil hydraulic cylinder 7 rod chambers, thereby the piston rod of oil hydraulic cylinder 7 is shunk, the now A mouth of Pilot operated check valve 8 and the cut-off of B mouth, the hydraulic oil in oil hydraulic cylinder 7 rodless cavities is through the right bit stream oil sump tank 1 of selector valve 5.
When selector valve 5 meta connecting system, the high pressure liquid force feed of oil hydraulic pump 2 outputs flows back to fuel tank 1 after relief valve 10, and the piston rod of oil hydraulic cylinder 7 all can stop in any travel position.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification, change and equivalent structure transformation of above embodiment being done according to the utility model technical spirit, all still belongs in the protection domain of technical solutions of the utility model.
Claims (4)
1. a Cyclic test platform hydraulic control system, comprise fuel tank (1), for system provides the oil hydraulic pump (2) of high pressure liquid force feed and drives the reciprocating oil hydraulic cylinder of unit under test (7), it is characterized in that: also comprise selector valve (5), one-way speed-regulating valve (6) and Pilot operated check valve (8), the first working port of described selector valve (5) is communicated with rodless cavity and the rod chamber of described oil hydraulic cylinder (7) respectively with the second working port, the 3rd working port of described selector valve (5) is communicated with the oil outlet of described fuel tank (1) and described oil hydraulic pump (2) respectively with the 4th working port, the oil outlet place of described oil hydraulic pump (2) is provided with accumulator (4), on pipeline between the rodless cavity of the first working port of described selector valve (5) and described oil hydraulic cylinder (7), be provided with described one-way speed-regulating valve (6), the rodless cavity of described oil hydraulic cylinder (7) and rod chamber are communicated with filler opening and the oil outlet of described Pilot operated check valve (8) respectively, the hydraulic control hydraulic fluid port of described Pilot operated check valve (8) is communicated with the first working port and the fuel tank (1) of described selector valve (5) respectively, on pipeline between the rod chamber of the second working port of described selector valve (5) and described oil hydraulic cylinder (7), be provided with one-way valve two (9).
2. according to Cyclic test platform hydraulic control system claimed in claim 1, it is characterized in that: described oil hydraulic pump (2) outlet port is provided with one-way valve one (3) and relief valve (10).
3. according to Cyclic test platform hydraulic control system claimed in claim 1, it is characterized in that: described oil hydraulic pump (2) inlet is provided with oil purifier (11).
4. according to Cyclic test platform hydraulic control system claimed in claim 1, it is characterized in that: described selector valve (5) is 3-position 4-way solenoid directional control valve, and described Pilot operated check valve (8) is the formula Pilot operated check valve that leaks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320545739.1U CN203500138U (en) | 2013-09-03 | 2013-09-03 | Hydraulic control system for reciprocating test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320545739.1U CN203500138U (en) | 2013-09-03 | 2013-09-03 | Hydraulic control system for reciprocating test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500138U true CN203500138U (en) | 2014-03-26 |
Family
ID=50331120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320545739.1U Expired - Fee Related CN203500138U (en) | 2013-09-03 | 2013-09-03 | Hydraulic control system for reciprocating test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500138U (en) |
-
2013
- 2013-09-03 CN CN201320545739.1U patent/CN203500138U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20140903 |
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| EXPY | Termination of patent right or utility model |