CN203348219U - Hydraulic cylinder testing device - Google Patents
Hydraulic cylinder testing device Download PDFInfo
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- CN203348219U CN203348219U CN 201320334728 CN201320334728U CN203348219U CN 203348219 U CN203348219 U CN 203348219U CN 201320334728 CN201320334728 CN 201320334728 CN 201320334728 U CN201320334728 U CN 201320334728U CN 203348219 U CN203348219 U CN 203348219U
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Abstract
The utility model relates to the technical field of hydraulic testing, in particular to a hydraulic cylinder testing device. The technical problem that an existing device cannot test hydraulic cylinders with different media is solved. The device comprises a system oil discharging opening, a load loop and at least two tested loops. Two load liquid control safety valves, two load overflow valves and at least two load oil cylinders are arranged in the load loop. Each load oil cylinder is provided with a displacement sensor. A piston rod of each load oil cylinder is provided with a tension and pressure sensor. Each tested loop is provided with at least one tested cylinder interface set. Each tested cylinder interface set comprises a tested rod-less cavity oil opening and a tested cavity oil opening with a rod. A solenoid directional valve, double single-way throttle valves and a tested overflow valve are arranged in each tested loop. A pressure oil opening of the solenoid directional valve in each tested loop is connected to the system oil discharging opening through an oil discharging stop valve. The device is wide in application range and capable of lowering testing cost.
Description
Technical field
The utility model relates to Hydraulic Test Technique, particularly relates to a kind of technology of oil hydraulic cylinder testing apparatus.
Background technique
Oil hydraulic cylinder, before formal suction is used, need to carry out multinomial test, and main test event has: breakout pressure test, voltage-withstand test, stroke test, durable test, load efficiency test.
Existing oil hydraulic cylinder testing apparatus is all to adopt pressure regulator valve to carry out the test fluid cylinder pressure, this oil hydraulic cylinder testing apparatus all can only adopt single hydraulic medium to carry out the oil hydraulic cylinder test, can't select the special hydraulic medium of other types, if mixed between different hydraulic mediums, can cause hydraulic medium to pollute.As can be seen here, existing oil hydraulic cylinder detection system application area is less, has significant limitation.For the oil hydraulic cylinder that adopts different medium hydraulic oil, often need to purchase many cover testing apparatuss, testing cost is higher.
The model utility content
For the defect existed in above-mentioned prior art, it is wide that technical problem to be solved in the utility model is to provide a kind of application area, can be tested the oil hydraulic cylinder that adopts different medium hydraulic oil, can reduce the oil hydraulic cylinder testing apparatus of testing cost.
In order to solve the problems of the technologies described above, a kind of oil hydraulic cylinder testing apparatus provided by the utility model is characterized in that: this device comprises a system oil drain out, a load circuit, and at least two tested loops;
Described load circuit is provided with induced pressure hydraulic fluid port, load return opening, is provided with two load pilot safety valves, two load relief valves in load circuit, and at least two load oil cylinders;
Described two load pilot safety valves are respectively the first load pilot safety valve, the second load pilot safety valve, and described two load relief valves are respectively the first load relief valve, the second load relief valve;
Two actuator ports of each load pilot safety valve are respectively the first actuator port, the second actuator port, the second actuator port of self is received in the control port of each load pilot safety valve, and the first actuator port of two load pilot safety valves is received respectively the induced pressure hydraulic fluid port;
The second actuator port of described the first load pilot safety valve connects the first load relief valve to the load return opening, and the second actuator port of described the second load pilot safety valve connects the second load relief valve to the load return opening;
Each receives the second actuator port of the first load pilot safety valve the rodless cavity of each load oil cylinder through a rodless cavity stop valve, each receives the second actuator port of the second load pilot safety valve the rod chamber of each load oil cylinder through a rod chamber stop valve;
Respectively be provided with a displacement transducer on each load oil cylinder, respectively be provided with a pull pressure sensor on the piston rod of each load oil cylinder;
Every tested loop is equipped with a tested fuel tank, a tested pressure hydraulic fluid port, a tested return opening, and at least one group of tested cylinder interface, every group of tested cylinder interface forms by a tested rodless cavity hydraulic fluid port, a tested rod chamber hydraulic fluid port, be equipped with solenoid directional control valve, Double throttle check valve in every tested loop, tested relief valve;
In every tested loop, the pressure hydraulic fluid port of solenoid directional control valve is received the tested pressure hydraulic fluid port in this loop, and receive the tested fuel tank in this loop through the tested relief valve in this loop, the return opening of solenoid directional control valve is received the tested return opening in this loop, the oil circuit that an actuator port of solenoid directional control valve connects this loop Double throttle check valve is to each tested rodless cavity hydraulic fluid port in this loop, another oil circuit that another actuator port of solenoid directional control valve connects this loop Double throttle check valve is to each tested rod chamber hydraulic fluid port in this loop, and on the connecting pipeline between each tested rodless cavity hydraulic fluid port and this loop Double throttle check valve, and on the connecting pipeline between each tested rod chamber hydraulic fluid port and this loop Double throttle check valve, respectively be provided with a tested chamber stop valve,
Each receives the system oil drain out through an oil extraction stop valve pressure hydraulic fluid port of the solenoid directional control valve in each tested loop.
The oil hydraulic cylinder testing apparatus that the utility model provides, be provided with many tested loops, every tested loop can be used for testing a kind of hydraulic medium, between different hydraulic mediums, can not use with, can avoid hydraulic medium to pollute, and the shared load circuit in each tested loop, its application area is wide, can be tested the oil hydraulic cylinder that adopts different medium hydraulic oil, can be reduced testing cost.
The accompanying drawing explanation
Fig. 1 is the hydraulic diagram of the utility model embodiment's oil hydraulic cylinder testing apparatus.
Embodiment
Below in conjunction with the accompanying drawing explanation, embodiment of the present utility model is described in further detail, but the present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof, all should list protection domain of the present utility model in.
As shown in Figure 1, a kind of oil hydraulic cylinder testing apparatus that the utility model embodiment provides is characterized in that: this device comprises a system oil drain out P0, a load circuit, and two tested loops;
Described load circuit is provided with induced pressure hydraulic fluid port P1, load oil return inlet T 1, is provided with two load pilot safety valve H01, H02, two load relief valve H31, H32 in load circuit, and two load oil cylinder U11, U12;
Described two load oil cylinders are respectively the first load oil cylinder U11, the second load oil cylinder U12, described two load pilot safety valves are respectively the first load pilot safety valve H01, the second load pilot safety valve H02, and described two load relief valves are respectively the first load relief valve H31, the second load relief valve H32;
Two actuator ports of each load pilot safety valve are respectively the first actuator port, the second actuator port, the second actuator port of self is received in the control port of each load pilot safety valve, and the first actuator port of two load pilot safety valve H01, H02 is received respectively induced pressure hydraulic fluid port P1;
The second actuator port of described the first load pilot safety valve H01 meets the first load relief valve H31 to load oil return inlet T 1, and the second actuator port of described the second load pilot safety valve H02 meets the second load relief valve H32 to load oil return inlet T 1;
The rodless cavity of described the first load oil cylinder U11 is received the second actuator port of the first load pilot safety valve H01 through a rodless cavity stop valve H11, the rodless cavity of described the second load oil cylinder U12 is received the second actuator port of the first load pilot safety valve H01 through a rodless cavity stop valve H21;
The rod chamber of described the first load oil cylinder U11 is received the second actuator port of the second load pilot safety valve H02 through a rod chamber stop valve H12, the rod chamber of described the second load oil cylinder U12 is received the second actuator port of the second load pilot safety valve H01 through a rod chamber stop valve H22;
Described the first load oil cylinder U11 is provided with a displacement transducer LVDT 1, and described the second load oil cylinder U12 is provided with a displacement transducer LVDT 2;
The piston rod of described the first load oil cylinder U11 is provided with a pull pressure sensor CG1, and the piston rod of described the second load oil cylinder U12 is provided with a pull pressure sensor CG2;
Described two tested loops are respectively the first tested loop, the second tested loop;
The described first tested loop is provided with a tested fuel tank X1, a tested pressure hydraulic fluid port P2, a tested oil return inlet T 2, and two groups of tested cylinder interfaces, wherein one group of tested cylinder interface consists of a tested rodless cavity hydraulic fluid port C1, a tested rod chamber hydraulic fluid port D1, another is organized tested cylinder interface and consists of a tested rodless cavity hydraulic fluid port C2, a tested rod chamber hydraulic fluid port D2, be provided with solenoid directional control valve H41, Double throttle check valve H42 in the first tested loop, tested relief valve H43;
In the described first tested loop, the pressure hydraulic fluid port of solenoid directional control valve H41 is received this loop tested pressure hydraulic fluid port P2, and tested relief valve H43 receives the tested fuel tank X1 in this loop through this loop, the return opening of solenoid directional control valve H41 is received the tested oil return inlet T 2 in this loop, the actuator port of solenoid directional control valve H41 meets two the tested rodless cavity hydraulic fluid port C1s of the oil circuit of this loop Double throttle check valve H42 to this loop, C2, another actuator port of solenoid directional control valve H41 meets two the tested rod chamber hydraulic fluid port D1s of another oil circuit of this loop Double throttle check valve H42 to this loop, D2, and two tested rodless cavity hydraulic fluid port C1, on connecting pipeline between C2 and this loop Double throttle check valve H42, and two tested rod chamber hydraulic fluid port D1, on connecting pipeline between D2 and this loop Double throttle check valve H42, respectively be provided with a tested chamber stop valve,
The described second tested loop is provided with a tested fuel tank X2, a tested pressure hydraulic fluid port P3, a tested oil return inlet T 3, and by a tested rodless cavity hydraulic fluid port C3, one group of tested cylinder interface that tested rod chamber hydraulic fluid port D3 forms, be provided with solenoid directional control valve H51, Double throttle check valve H52 in the second tested loop, tested relief valve H53;
In the described second tested loop, the pressure hydraulic fluid port of solenoid directional control valve H51 is received this loop tested pressure hydraulic fluid port P3, and tested relief valve H53 receives the tested fuel tank X2 in this loop through this loop, the return opening of solenoid directional control valve H51 is received the tested oil return inlet T 3 in this loop, the actuator port of solenoid directional control valve H51 meets the tested rodless cavity hydraulic fluid port C3 of the oil circuit of this loop Double throttle check valve H52 to this loop, another actuator port of solenoid directional control valve H51 meets the tested rod chamber hydraulic fluid port D3 of another oil circuit of this loop Double throttle check valve H52 to this loop, and on the connecting pipeline between tested rodless cavity hydraulic fluid port C3 and this loop Double throttle check valve H52, and on the connecting pipeline between tested rod chamber hydraulic fluid port D3 and this loop Double throttle check valve H52, respectively be provided with a tested chamber stop valve,
The pressure hydraulic fluid port of solenoid directional control valve H41 in the described first tested loop is received system oil drain out P0 through an oil extraction stop valve H44, and the pressure hydraulic fluid port of the solenoid directional control valve H51 in the described second tested loop is received system oil drain out P0 through an oil extraction stop valve H54.
The utility model embodiment and existing oil hydraulic cylinder test instrument are used in conjunction with, can test the oil hydraulic cylinder of two employings with the dielectric fluid force feed simultaneously, also can test two oil hydraulic cylinders that adopt different medium hydraulic oil simultaneously, while testing two employings with the oil hydraulic cylinder of dielectric fluid force feed simultaneously, two tested liquid cylinder pressures are received respectively to two groups of tested cylinder interfaces in the first tested loop, while testing the oil hydraulic cylinder of two employing different medium hydraulic oil simultaneously, a tested liquid cylinder pressure is received to one group of tested cylinder interface in the first tested loop, another tested liquid cylinder pressure is received one group of tested cylinder interface in the second tested loop, the piston rod of two tested liquid cylinder pressures is received respectively two pull pressure sensor on the load cylinder piston rod by mechanical part,
Test two methods that adopt the oil hydraulic cylinder of different medium hydraulic oil, with test simultaneously, two employings are similar with the method for the oil hydraulic cylinder of dielectric fluid force feed simultaneously;
Take that to test two employings be example with the oil hydraulic cylinder of dielectric fluid force feed: wherein oil hydraulic cylinder U21, another tested liquid cylinder pressure are No. two oil hydraulic cylinder U22 as No. one for tested liquid cylinder pressure;
The second actuator port of two load pilot safety valve H01, H02 is respectively connect to a pressure transducer CG43, the CG44 corresponding test interface to oil hydraulic cylinder test instrument U01;
The rodless cavity of an oil hydraulic cylinder U21 and rod chamber are received respectively to one group of tested cylinder interface (C1, D1), and the piston rod of an oil hydraulic cylinder U21 is received the pull pressure sensor CG1 on the first load oil cylinder U11 piston rod by mechanical part;
The rodless cavity of No. two oil hydraulic cylinder U22 and rod chamber are received respectively to another and organize tested cylinder interface (C2, D2), the piston rod of No. two oil hydraulic cylinder U22 is received the pull pressure sensor CG2 on the second load oil cylinder U12 piston rod by mechanical part;
By the pull pressure sensor CG1 on the first load oil cylinder U11 piston rod, and the pull pressure sensor CG2 on the second load oil cylinder U12 piston rod receives respectively the corresponding test interface of oil hydraulic cylinder test instrument U01;
Tested pressure hydraulic fluid port P2 in the first tested loop is connect to the corresponding test interface of a pressure transducer CG45 to oil hydraulic cylinder test instrument U01;
During test, by induced pressure hydraulic fluid port P1, load oil return inlet T 1 is received test pressure oil and the oil return that pressure testing power is the 1Mpa left and right, by the tested pressure hydraulic fluid port P2 in the first tested loop, tested oil return inlet T 2 is received respectively working pressure oil and the oil return of two tested liquid cylinder pressures, and adjust tested relief valve H43 in the first tested loop to required pressure, then be totally released two load relief valve H31, H32, and the solenoid directional control valve H41 controlled in the first tested loop commutates repeatedly, make two tested liquid cylinder pressure U21, the to-and-fro motion in non-loaded situation of the piston rod of U22, make two tested liquid cylinder pressures fully oil-filled, adjust Double throttle check valve H42 simultaneously, make the motion speed of two tested liquid cylinder pressures reach design speed,
After the motion speed of two tested liquid cylinder pressures reaches design speed, manually give solenoid directional control valve H41 in the first tested loop to signal, make the piston rod of two tested liquid cylinder pressures reach the limit position that stretches out and retract, and reach the displacement transducer LVDT 1 on limit position adjustment two load oil cylinder U11, the U12 that stretch out and retract, the initial zero-bit of LVDT2 according to the piston rod of two tested liquid cylinder pressures, can carry out Test item after adjustment;
The breakout pressure test method of tested liquid cylinder pressure is: in non-loaded situation, progressively adjust the tested relief valve H43 force value in the first tested loop, while being adjusted to the critical value that can make the operation of tested liquid cylinder pressure, oil hydraulic cylinder test instrument U01 records the breakout pressure value of tested liquid cylinder pressure by pressure transducer CG45;
The withstand voltage test method of tested liquid cylinder pressure is: the piston rod of controlling the tested liquid cylinder pressure by the solenoid directional control valve H41 in the first tested loop reaches and stretches out (or retraction) limit position, then progressively adjust the tested relief valve H43 force value in the first tested loop, make the suffered retraction of piston rod (or stretching out) pressure of tested liquid cylinder pressure reach after required pressure resistance pressurize 3 minutes;
The stroke test of tested liquid cylinder pressure completes by displacement transducer LVDT 1, the LVDT2 on two load oil cylinder U11, U12;
The durable test method of tested liquid cylinder pressure is: under the maximum pressure of design, move continuously the tested liquid cylinder pressure 8 hours, velocity error, ± 10%, is completed every situation of rear inspection oil hydraulic cylinder;
The load efficiency test method of tested liquid cylinder pressure is: by the tested pressure hydraulic fluid port P2 in the first tested loop, tested oil return inlet T 2 circuit pressures are adjusted to a little more than breakout pressure, the piston rod of controlling the tested liquid cylinder pressure by the solenoid directional control valve H41 in the first tested loop moves to meta, then close two load relief valve H31 fully, then H32 is adjusted to target pressure value by the tested relief valve H43 pressure in the first tested loop, then record two load oil cylinder U11 by oil hydraulic cylinder test instrument U01, pull pressure sensor CG1 on the U12 piston rod, the force value of CG2, and pressure transducer CG43, the force value of CG44, calculate the load efficiency value of tested liquid cylinder pressure under target pressure value by formula.
Claims (1)
1. an oil hydraulic cylinder testing apparatus, it is characterized in that: this device comprises a system oil drain out, a load circuit, and at least two tested loops;
Described load circuit is provided with induced pressure hydraulic fluid port, load return opening, is provided with two load pilot safety valves, two load relief valves in load circuit, and at least two load oil cylinders;
Described two load pilot safety valves are respectively the first load pilot safety valve, the second load pilot safety valve, and described two load relief valves are respectively the first load relief valve, the second load relief valve;
Two actuator ports of each load pilot safety valve are respectively the first actuator port, the second actuator port, the second actuator port of self is received in the control port of each load pilot safety valve, and the first actuator port of two load pilot safety valves is received respectively the induced pressure hydraulic fluid port;
The second actuator port of described the first load pilot safety valve connects the first load relief valve to the load return opening, and the second actuator port of described the second load pilot safety valve connects the second load relief valve to the load return opening;
Each receives the second actuator port of the first load pilot safety valve the rodless cavity of each load oil cylinder through a rodless cavity stop valve, each receives the second actuator port of the second load pilot safety valve the rod chamber of each load oil cylinder through a rod chamber stop valve;
Respectively be provided with a displacement transducer on each load oil cylinder, respectively be provided with a pull pressure sensor on the piston rod of each load oil cylinder;
Every tested loop is equipped with a tested fuel tank, a tested pressure hydraulic fluid port, a tested return opening, and at least one group of tested cylinder interface, every group of tested cylinder interface forms by a tested rodless cavity hydraulic fluid port, a tested rod chamber hydraulic fluid port, be equipped with solenoid directional control valve, Double throttle check valve in every tested loop, tested relief valve;
In every tested loop, the pressure hydraulic fluid port of solenoid directional control valve is received the tested pressure hydraulic fluid port in this loop, and receive the tested fuel tank in this loop through the tested relief valve in this loop, the return opening of solenoid directional control valve is received the tested return opening in this loop, the oil circuit that an actuator port of solenoid directional control valve connects this loop Double throttle check valve is to each tested rodless cavity hydraulic fluid port in this loop, another oil circuit that another actuator port of solenoid directional control valve connects this loop Double throttle check valve is to each tested rod chamber hydraulic fluid port in this loop, and on the connecting pipeline between each tested rodless cavity hydraulic fluid port and this loop Double throttle check valve, and on the connecting pipeline between each tested rod chamber hydraulic fluid port and this loop Double throttle check valve, respectively be provided with a tested chamber stop valve,
Each receives the system oil drain out through an oil extraction stop valve pressure hydraulic fluid port of the solenoid directional control valve in each tested loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320334728 CN203348219U (en) | 2013-06-09 | 2013-06-09 | Hydraulic cylinder testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320334728 CN203348219U (en) | 2013-06-09 | 2013-06-09 | Hydraulic cylinder testing device |
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| CN203348219U true CN203348219U (en) | 2013-12-18 |
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| CN 201320334728 Expired - Fee Related CN203348219U (en) | 2013-06-09 | 2013-06-09 | Hydraulic cylinder testing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775437A (en) * | 2014-02-28 | 2014-05-07 | 南京理工大学 | Hydraulic cylinder test bench load simulation device and control method thereof |
| CN103867507A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Device for providing load for tested hydraulic system with oil cylinder at output end |
| CN107859663A (en) * | 2017-10-25 | 2018-03-30 | 成都弗格森液压机电有限公司 | The restraining device of redundant force in a kind of servo hydraulic system |
-
2013
- 2013-06-09 CN CN 201320334728 patent/CN203348219U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775437A (en) * | 2014-02-28 | 2014-05-07 | 南京理工大学 | Hydraulic cylinder test bench load simulation device and control method thereof |
| CN103775437B (en) * | 2014-02-28 | 2016-03-02 | 南京理工大学 | Cylinder bench load simulating device and controlling method thereof |
| CN103867507A (en) * | 2014-03-14 | 2014-06-18 | 上海电气液压气动有限公司 | Device for providing load for tested hydraulic system with oil cylinder at output end |
| CN103867507B (en) * | 2014-03-14 | 2016-06-29 | 上海电气液压气动有限公司 | A kind of device of the tested hydraulic system offer load being oil cylinder for outfan |
| CN107859663A (en) * | 2017-10-25 | 2018-03-30 | 成都弗格森液压机电有限公司 | The restraining device of redundant force in a kind of servo hydraulic system |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20131218 Termination date: 20170609 |
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| CF01 | Termination of patent right due to non-payment of annual fee |