CN201757101U - Hydraulic cylinder factory test bed - Google Patents
Hydraulic cylinder factory test bed Download PDFInfo
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- CN201757101U CN201757101U CN2010202783751U CN201020278375U CN201757101U CN 201757101 U CN201757101 U CN 201757101U CN 2010202783751 U CN2010202783751 U CN 2010202783751U CN 201020278375 U CN201020278375 U CN 201020278375U CN 201757101 U CN201757101 U CN 201757101U
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Abstract
A hydraulic cylinder factory test bed comprises a main pump, an auxiliary pump, a pressurized cylinder, one-way valves, hydraulic-operated one-way valves, reversing valves, a sequence valve, overflow valves and pressure gauges; the major-diameter cavity of the pressurized cylinder is cavity A1, and the minor-diameter cavity is cavity A2; the cavity A1 is connected with the first reversing valve; the first reversing valve is connected with the auxiliary pump; the lower end of the cavity A2 is connected with the first one-way valve and the second one-way valve; the first and the second one-way valves are respectively connected with the auxiliary pump through the first reversing valve and connected with the main pump through the sequence valve; the upper end of the cavity A2 is connected with a three position four way directional valve and is respectively connected with an oil inlet and an oil outlet of a tested cylinder through the first hydraulic-operated one-way valve and the second hydraulic-operated one-way valve; the control ports of the first and the second hydraulic-operated one-way valves are connected with the second reversing valve; and the lower end of the cavity A2 is connected with the main pump through the second one-way valve and the sequence valve. By adopting the utility model, both general pressure tests and ultrahigh pressure tests can be performed to hydraulic cylinders; and the utility model has the advantages of simple structure, good factory test effect, wide application range, economy and practicality.
Description
Technical field
The utility model relates to a kind of experimental facilities, is specifically related to a kind of oil hydraulic cylinder Laboratory Furniture that dispatches from the factory, particularly a kind of oil hydraulic cylinder that adopts pressurized cylinder Laboratory Furniture that dispatches from the factory.
Background technique
The existing oil hydraulic cylinder Laboratory Furniture that dispatches from the factory is mainly formed (JB/JQ 20302-88 has drawn from) by a motor, an oil hydraulic pump, a safety valve, a selector valve, an one-way throttle valve and an one-way valve.This oil hydraulic cylinder dispatches from the factory, and Laboratory Furniture is simple in structure, practicability is not strong; When oil hydraulic cylinder was carried out pressure test, the rated pressure of its oil hydraulic pump and set pressure for safety valve were determining the maximum dwell pressure of oil hydraulic cylinder.If will carry out pressure test to the oil hydraulic cylinder under the ultrahigh pressure working state, the requirement of withstand voltage of each hydraulic element of its Laboratory Furniture and auxiliary will be higher also.Therefore, the existing oil hydraulic cylinder Laboratory Furniture that dispatches from the factory has impracticable, uneconomic shortcoming.
Summary of the invention
Technical problem to be solved in the utility model is: solve the problem that above-mentioned prior art exists, can carry out general pressure test, can carry out ultrahigh pressure pressure test and simple in structure, good, applied widely, the economical and practical oil hydraulic cylinder that the dispatches from the factory experiment effect Laboratory Furniture that dispatches from the factory to oil hydraulic cylinder oil hydraulic cylinder and provide a kind of.
The technical solution adopted in the utility model is: this oil hydraulic cylinder Laboratory Furniture that dispatches from the factory comprises main pump, service pump, pressurized cylinder, one-way valve, Pilot operated check valve, selector valve, sequence valve, relief valve and pressure gauge; The chamber, big footpath of pressurized cylinder is the A1 chamber, the path chamber is the A2 chamber, the A1 chamber connects first selector valve, first selector valve is connected with service pump, lower end, A2 chamber and first, the second two one-way valves connect, first, second liang of one-way valve connects service pump and is connected main pump by sequence valve by first selector valve respectively, upper end, A2 chamber is connected with three position four-way directional control valve and passes through first respectively, second Pilot operated check valve is connected with the oil inlet and outlet of tested cylinder, first, the control mouth of second liang of Pilot operated check valve is connected with second selector valve, and lower end, A2 chamber is connected with main pump with sequence valve by second one-way valve.
In the technique scheme, main pump output terminal and lower end, pressurized cylinder A2 chamber also are connected with the 3rd relief valve and the 4th relief valve respectively, and auxiliary delivery side of pump also is connected with bi-bit bi-pass selector valve and first, second two relief valves.
The utility model has designed pressurized cylinder and service pump and Pressure Increasing Oil-Line thereof dexterously, and the bigger diameter end A1 chamber of pressurized cylinder is by the service pump fuel feeding, and miner diameter end A2 chamber is connected by the oil inlet and outlet of main pump and service pump fuel feeding and connection selector valve and tested cylinder.Service pump and pressurized cylinder bigger diameter end are connected to selector valve and relief valve, and the fuel feeding direction and the pressure of service pump are regulated.Also be connected with one-way valve and safety valve in the middle of main pump and the pressurized cylinder miner diameter end, fluid can only flow to the pressurized cylinder miner diameter end from main pump, and safety valve plays a part safe overflow to the maximum test pressure of oil hydraulic cylinder.The oil inlet and outlet of tested cylinder all connects Pilot operated check valve, two chambeies of oil hydraulic cylinder is realized the effect of pressurize.Sequence valve and selector valve play the sequentially-operating loop.The pressurization of pressurized cylinder, the system part of making is in high pressure conditions, has avoided whole system all to be in high pressure conditions.For the purchase and the manufacturing of each oil hydraulic pump and control valve and hydraulic pressure auxiliary provides convenience, and more economical, more practical, the experiment effect that dispatches from the factory is stronger.
Oil hydraulic cylinder of the present utility model Laboratory Furniture and before the oil hydraulic cylinder Laboratory Furniture that dispatches from the factory that dispatches from the factory is compared, and the utility model changes single oil pump feed into the double pump fuel feeding, and has increased various practical valves such as pressurized cylinder, service pump, Pilot operated check valve.Be primarily characterized in that the effect of pressurized cylinder: pressurized cylinder is by the service pump fuel feeding, when high pressure resistant test, pressurized cylinder provides high pressure oil to be converted to super high pressure oil oil hydraulic pump, directly provides for tested cylinder, realize partial high pressure, avoided impacting with high pressure other each control valve.Save the cost of oil hydraulic pump, each control valve greatly, embodied economic, practical characteristics.
Description of drawings:
Fig. 1 is a hydraulic schematic diagram of the present utility model;
Fig. 2 is the pressurized cylinder structural representation;
Fig. 3 is the test low pressure (LP) cylinder of the present utility model (working state schematic representation of test pressure＜40MPa);
Fig. 4 is the test high-pressure cylinder of the present utility model (working state schematic representation of test pressure 〉=40MPa);
Fig. 5 is the hydraulic schematic diagram of prior art.
Accompanying drawing marking explanation: 1---main pump 2---first relief valve 3---service pump
4---bi-bit bi-pass selector valve 5---second relief valve 6---sequence valves
7---second selector valve 8---second one-way valve 9---, first selector valves
10---the 3rd relief valve 11---pressurized cylinder 12---three position four-way directional control valves
13---first Pilot operated check valves 14---, second Pilot operated check valve
15---the tested cylinders of first one-way valve 16---the 4th relief valve 17---
18---pressure gauge.
Embodiment
As can be seen from Figure 1, this oil hydraulic cylinder that the utility model the provides Laboratory Furniture that dispatches from the factory, comprise main pump 1, service pump 3, pressurized cylinder 11, first, second two one- way valves 15,8, first, second two Pilot operated check valves 13,14, four selector valves, sequence valve 6 and first～four or four relief valve and four pressure gauges 18.The chamber, big footpath of pressurized cylinder is the A1 chamber, and the path chamber is the A2 chamber, and the A1 chamber connects first selector valve 9, and selector valve 9 is connected with service pump 3, middle pressure gauge and bi-bit bi-pass selector valve 4 and first, second two relief valve 2 Hes in addition
Lower end, A2 chamber is connected with first, second two one- way valve 15,8, and two one-way valves connect service pump 3 and are connected main pump 1 by sequence valve 6 by first selector valve 9 respectively.Upper end, A2 chamber is connected with three position four-way directional control valve 12 and is connected with the oil inlet and outlet of tested cylinder 17 by first, second Pilot operated check valve 13,14 respectively, the control mouth of two Pilot operated check valves is connected with second selector valve 7, lower end, A2 chamber is connected with main pump 1 with sequence valve 6 by second one-way valve 8, and fluid can only flow to the A2 chamber by main pump.
As can be seen from Figure 3, when right of first selector valve 9, as shown in the figure, pressurized cylinder 11 is inoperative, this moment service pump 3 pressure maximum by 5 controls of second relief valve.The fluid of tested cylinder is respectively by main pump → sequence valve 6 → the second one-way valves 8 → selector valve 12 → tested cylinder; Service pump 3 → the first selector valves 9 → the second one-way valves 8 → selector valve 12 → tested cylinder 17.Because the withstand voltage pressure of this tested cylinder is less than 40MPa, therefore only need independent fuel feeding of main pump or main pump, service pump together fuel feeding just can reach test effect.
As can be seen from Figure 4, this moment this tested cylinder 17 test pressure more than or equal to 40MPa, so main pump 1 and service pump 3 together fuel feeding do not reach the withstand voltage pressure of tested cylinder yet.Therefore, when first selector valve, 9 positions, a left side (as shown in the figure), when bi-bit bi-pass selector valve 4 was in the next (as shown in the figure), pressurized cylinder A1 chamber was connected with service pump 3, and the A2 chamber is connected with main pump, and first relief valve 2 is being controlled the pressure maximum of service pump.This moment, service pump passed through first selector valve 9 to pressurized cylinder A1 chamber fuel feeding when pressurized cylinder A2 chamber is full of fluid.According to shown in Figure 2, the pressure P 2=P1Knm of the fluid that A2 is come out in the chamber.If P1=30MPa, pressure ratio K=1.5, pressure drop coefficient nm=0.9, then the A2 chamber the pressure P 2=40.5MPa of confession, can satisfy tested cylinder fully at the withstand voltage pressure of maximum.
Claims (2)
1. oil hydraulic cylinder Laboratory Furniture that dispatches from the factory is characterized in that: comprise main pump, service pump, pressurized cylinder, one-way valve, Pilot operated check valve, selector valve, sequence valve, relief valve and pressure gauge; The chamber, big footpath of pressurized cylinder is the A1 chamber, the path chamber is the A2 chamber, the A1 chamber connects first selector valve, first selector valve is connected with service pump, lower end, A2 chamber and first, the second two one-way valves connect, first, the second two one-way valves connect service pump and are connected main pump by sequence valve by first selector valve respectively, upper end, A2 chamber is connected with three position four-way directional control valve and passes through first respectively, second Pilot operated check valve is connected with the oil inlet and outlet of tested cylinder, first, the control mouth of second liang of Pilot operated check valve is connected with second selector valve, and lower end, A2 chamber is connected with main pump with sequence valve by second one-way valve.
2. the oil hydraulic cylinder according to claim 1 Laboratory Furniture that dispatches from the factory, it is characterized in that: main pump output terminal and lower end, pressurized cylinder A2 chamber also are connected with the 3rd relief valve and the 4th relief valve respectively, and auxiliary delivery side of pump also is connected with bi-bit bi-pass selector valve and first, second two relief valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202783751U CN201757101U (en) | 2010-08-02 | 2010-08-02 | Hydraulic cylinder factory test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202783751U CN201757101U (en) | 2010-08-02 | 2010-08-02 | Hydraulic cylinder factory test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201757101U true CN201757101U (en) | 2011-03-09 |
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ID=43644372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202783751U Expired - Fee Related CN201757101U (en) | 2010-08-02 | 2010-08-02 | Hydraulic cylinder factory test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201757101U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182723A (en) * | 2010-08-02 | 2011-09-14 | 湖南协力液压有限公司 | Delivery test platform for hydraulic cylinder |
| CN103591083A (en) * | 2012-08-17 | 2014-02-19 | 上海立新液压有限公司 | Hydraulic test stand for oil cylinders |
| CN103615443A (en) * | 2013-12-03 | 2014-03-05 | 三一汽车制造有限公司 | Energy recovery hydraulic system and engineering machine |
| CN103967869A (en) * | 2014-05-12 | 2014-08-06 | 三一汽车制造有限公司 | Hydraulic cylinder loading detecting device |
| CN105736515A (en) * | 2014-12-08 | 2016-07-06 | 特斯科（上海）机电测试技术有限公司 | Drifting testing method for off-line hydraulic cylinder |
| 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 |
-
2010
- 2010-08-02 CN CN2010202783751U patent/CN201757101U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182723A (en) * | 2010-08-02 | 2011-09-14 | 湖南协力液压有限公司 | Delivery test platform for hydraulic cylinder |
| CN103591083A (en) * | 2012-08-17 | 2014-02-19 | 上海立新液压有限公司 | Hydraulic test stand for oil cylinders |
| CN103615443A (en) * | 2013-12-03 | 2014-03-05 | 三一汽车制造有限公司 | Energy recovery hydraulic system and engineering machine |
| CN103615443B (en) * | 2013-12-03 | 2016-04-06 | 三一汽车制造有限公司 | A kind of energy recovery hydraulic system and engineering machinery |
| CN103967869A (en) * | 2014-05-12 | 2014-08-06 | 三一汽车制造有限公司 | Hydraulic cylinder loading detecting device |
| CN103967869B (en) * | 2014-05-12 | 2017-06-13 | 三一汽车制造有限公司 | A kind of hydraulic cylinder loads detection means |
| CN105736515A (en) * | 2014-12-08 | 2016-07-06 | 特斯科（上海）机电测试技术有限公司 | Drifting testing method for off-line hydraulic cylinder |
| 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 |
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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 |
Granted publication date: 20110309 Termination date: 20150802 |
|
| EXPY | Termination of patent right or utility model |