CN101871478A - Loading device of hydraulic motor test board - Google Patents
Loading device of hydraulic motor test board Download PDFInfo
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- CN101871478A CN101871478A CN 201010225687 CN201010225687A CN101871478A CN 101871478 A CN101871478 A CN 101871478A CN 201010225687 CN201010225687 CN 201010225687 CN 201010225687 A CN201010225687 A CN 201010225687A CN 101871478 A CN101871478 A CN 101871478A
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Abstract
The invention relates to a loading device of a hydraulic motor test board, which is characterized in that a high-pressure oil pump which is connected with an oil tank is connected with an electro-hydraulic reversing valve, a bi-direction retaining throttling valve and a test motor oil inlet through a high-pressure filter and an oil inlet retaining valve, a test motor oil outlet forms a test loop with an oil return retaining valve and an oil return filter oil return box after being connected with a remote counterbalance overflow valve, a flow-rate sensor, through the bi-direction retaining throttling valve and an electro-hydraulic reversing valve oil outlet. A loader is formed by joining a loading motor and a testing motor respectively with a rotation speed torque instrument through a coupling joint, at the same time, a low-pressure pump which is connected with the oil tank enters two ends of the loading motor through two retaining valves, the testing motor rotates to drive the loading motor to rotate, the oil outlet retaining valve is automatically closed, and the outlet oil forms a loading circuit through the counterbalance overflow valve, the remote overflow valve, the oil return retaining valve and the oil return filter oil return box. The loading motor is used for substituting an original magnetic powder loader, so the size is greatly reduced, the energy consumption is reduced, the remote control adjustment is convenient for test personnel to work, the loading force is large, torque of 60000 N.m can be tested, the testing range is wide, and the practicability is strong.
Description
Technical field
The present invention relates to the important component part in a kind of hydraulic motor test board, particularly the deceleration loading device of the hydraulic motor test board that output loading is used as the test motor.
Background technique
For guaranteeing quality of product, must carry out testing property to every oil hydraulic motor before oil hydraulic motor dispatches from the factory, test as pressure, flow, moment of torsion, rotating speed, performance etc., reaching designing requirement is that acceptable product just can dispatch from the factory.
Existing manufacturer adopts the output loading of magnetic powder brake as the test motor in test, and magnetic powder brake is according to electromagnetic principle with utilize the magnetic transmitting torque, magnetic powder brake is connected with the test block oil hydraulic motor, its constituent elements is many, volume is big, the energy consumption height, the cost height, maintenance is difficult, and it has exciting curent and transmitting torque is linear substantially, the stabilized current supply that needs specialized factory's production is as its power supply of specially joining, stuck phenomenon appears in the course of the work easily, powerful magnetic powder brake also needs water cooling, so adopt the output loading of magnetic powder brake as the test motor, the cost height, maintenance cost is higher, and practicability is not good.
Summary of the invention
Technical problem to be solved by this invention is: the deceleration loading device that a kind of hydraulic motor test board is provided, adopt the deceleration loading device of this structure, can measure power, the moment of torsion of different capacity oil hydraulic motor, test specification is big, utilization area is wide, and it is simple in structure, and energy consumption is low, maintenance cost is lower, and practicability is good.
The present invention addresses the above problem the technological scheme that is adopted: the deceleration loading device of hydraulic motor test board, comprise that high pressure oil that the high pressure oil pump that is connected with fuel tank gets is by high pressure filter, in line check valve, enter electro-hydraulic reversing valve, Double throttle check valve and test motor, then from the oil outlet of test motor through the oil outlet of Double throttle check valve, electro-hydraulic reversing valve and main long-range relief valve, main back pressure relief valve, main flow sensor is connected after return check valve, return filter are got back to fuel tank formation test loop; Also include loader in addition, described loader is linked into an integrated entity by shaft coupling and rotational speed and torque instrument respectively by the main shaft that loads motor, test motor and constitutes; Enter the two ends that load motor through two one-way valves by the low pressure pump that is connected with fuel tank, the two ends that load motor also are parallel with back pressure relief valve, long-range relief valve, when the test motor begins to rotate, the two loading one-way valves that load the motor two ends can be closed one automatically, and the outlet fluid process of loading motor loads the back pressure relief valve at the two ends of motor, long-range relief valve is got back to fuel tank by return check valve, return filter and constituted the loading loop.
Described low pressure pump is a low pressure gear pump, and the oil outlet place also is connected with an one-way valve and relief valve.
Described in line check valve, return check valve place are connected with a pressure gauge respectively.
Described high pressure oil pump is the high pressure Variable plunger pump, and the oil outlet place also is connected with precursor overflow valve, long-range relief valve, and described electro-hydraulic reversing valve is a three position four-way directional control valve.
The two ends of described loading motor connect high-pressure ball valve, pressure transducer, back pressure relief valve respectively, load one-way valve, long-range relief valve.
The two ends of described test motor connect testing high voltage ball valve, temperature transducer respectively; The working connection place is connected with high-pressure ball valve and pressure transducer in the test loop.
Also be connected with flow transducer and bypass low pressure ball valve on the described test motor.
Compared with prior art, the invention has the advantages that, adopt oil hydraulic motor in this device with the equal specification of test motor, same discharge capacity, same model or big one-level, replace former traditional magnetic loader to make to load motor, do that output loading is used and load motor and do not need other auxiliary, load motor simultaneously and adopt the low pressure gear pump fuel feeding, so volume dwindles greatly, energy consumption reduces greatly, and little investment, easy-maintaining.The test bench that constitutes of deceleration loading device thus in addition, pressure is regulated can be by the test bench centralized control, pressure regulator valve adopts telecontrol to regulate its on-load pressure, therefore greatly facilitate tester's work, alleviated tester's labor intensity, discharge capacity and the pressure by the Moderator Variable oil pump can change rotational speed and the moment of torsion of testing motor simultaneously, can test the oil hydraulic motor of different capacity, moment of torsion, can measure the moment of torsion of 100Nm to 60000Nm, so test specification is wide, practical.
Description of drawings
Fig. 1, line construction schematic representation of the present invention.
Fig. 2, three position four-way directional control valve schematic representation.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described further.
Electro-hydraulic reversing valve is a three position four-way directional control valve 1.
High-pressure service pump is a high pressure Variable plunger pump 19, and low pressure pump is a low pressure gear pump 3
Oil suction one end of high voltage variable dispensing pump 19 is connected with fuel tank 2, the fuel-displaced the other end is connected with precursor overflow valve 10-5, long-range relief valve third 10-6, high pressure filter 6-3, the oil outlet of high pressure filter is connected with the filler opening of in line check valve 8-2, also is connected with pressure gauge first 9-3
The outlet of in line check valve 8-2 is connected with the P mouth of three position four-way directional control valve 1 by main high-pressure ball valve 7-6, the P mouth also is connected with pressure transducer 11-3 simultaneously, the A of three position four-way directional control valve 1, the B hydraulic fluid port connects Double throttle check valve 18 and temperature transducer 17 respectively, fluid is by testing high voltage ball valve 7-5,7-4 is connected with the two ends of test motor 12-2, the T oil outlet of three position four-way directional control valve 1 connects main back pressure relief valve 10-3, main long-range relief valve 10-4, main flow sensor 15-2, return check valve 8-1 and oil return butterfly valve 7-1 in parallel again by being connected with pressure gauge 9-1, get back to fuel tank 2 behind the return filter 6-1 and constitute test motor oil circuit.
Oil suction one end of low pressure gear pump 3 is connected with fuel tank 2, oil outlet end and relief valve 4, the filler opening of one-way valve 5 connects, also be connected with pressure gauge second 9-2, the other end of one-way valve 5 is connected with two ends that load one-way valve 8-3 of parallel connection by two smash valve 7-2 in parallel, two the other ends that load one-way valves respectively with two back pressure relief valve 10-2 in parallel, long-range relief valve 10-1 connects, by loading high-pressure ball valve 7-2, load high-pressure ball valve 7-3 and be connected the two ends that load motor 12-1, be connected with pressure transducer 11-1 in addition, pressure transducer 11-2 constitutes loading motor oil circuit.
During use, it is equal specification, same discharge capacity, same model or big other oil hydraulic motor of one-level that loading motor 12-1 will select and test motor 12-2 for use.
The main shaft that loads motor 12-1 and the main shaft of test motor 12-2 link into an integrated entity by duplicate invoice joint 13-1 and main coupling 13-2 and rotational speed and torque instrument 16 respectively.
At first with main high-pressure ball valve 7-6, testing high voltage ball valve 7-5, testing high voltage ball valve 7-4, the two high-pressure ball valve 7-2 that load in parallel load high-pressure ball valve 7-3, two butterfly valve 7-1 in parallel and open.
High pressure variable displacement pump 19 is from fuel tank 2 oil suctions, get high pressure oil by high pressure filter 6-3, in line check valve 8-2, main high-pressure ball valve 7-6, directly enter the P filler opening of three position four-way directional control valve 1, commutation back and the oil pocket that arrives test motor 12-2 through Double throttle check valve 18, testing high voltage ball valve 7-5 or testing high voltage ball valve 7-4 drive test motor 12-2 rotation.
Meanwhile low pressure gear pump 3 is from fuel tank 2 oil suctions, go out fluid by one-way valve 5, connect pressure gauge second 9-2, relief valve 4 is kept the pressure of setting, fluid arrives two loading one-way valve 8-3 in parallel, load high-pressure ball valve 7-3, load high-pressure ball valve 7-2, to loading motor 12-1 fuel feeding, and by testing motor 12-2 by main coupling 13-1, duplicate invoice joint 13-2 drives and loads motor 12-1 rotation, at this moment the oil return that loads motor can not be by two loading one-way valve first 8-3 oil returns in parallel, can only be by back pressure relief valve 10-1 in parallel, after long-range relief valve second 10-2 regulates on-load pressure, through return check valve 8-1, return filter 6-1 gets back to fuel tank 2.
Just can measure moment of torsion and the rotating speed of test motor 12-2 by rotational speed and torque instrument 16.
Pressure transducer 11-1,11-2 by parallel connection just can detect the on-load pressure that loads motor 12-1, just can detect the force value of test motor 12-2 by primary pressure sensor 11-3.
Just can measure the out temperature of test motor by temperature transducer 17.
Just can detect the flow of the test motor 12-2 that flows through by main flow sensor 15-2, open bypass low pressure ball valve 14 and measure leakage rate, calculate volumetric efficiency=test motor flow/test motor flow+test motor leakage rate of test motor 12-2 by formula by flow transducer 15-1.
Can see the breakout pressure of test motor 12-2 on primary pressure sensor 11-3 and the pressure gauge first 9-3, can progressively regulate Double throttle check valve 18 or high pressure variable displacement pump 19, make the rotating speed of test motor 12-2 reach the force value of measuring the test motor behind the rating value.
By remote adjustment back pressure relief valve 10-2, make it reach rating value, from the last force value of seeing on the loading motor 12-1 of pressure transducer 11-1,11-2.
Electromagnet gets dead electricity in the three position four-way directional control valve 1 by changing, but just automatic reverse, be used for simulating the situation that the rotation of test motor 12-2 positive and negative direction is hit, by regulating the pressure of main back pressure relief valve 10-3, main long-range relief valve 10-4, just can test out the situation of change under the test motor 12-2 back pressure situation, just can simulate the performance of measuring when testing motor 12-2 and under various different operating modes, working.
Claims (7)
1. the deceleration loading device of a hydraulic motor test board, it is characterized in that comprising that high pressure oil that the high pressure oil pump that is connected with fuel tank (2) gets is by high pressure filter (6-3), in line check valve (8-2), enter electro-hydraulic reversing valve, Double throttle check valve (18) and the test motor (12-2), then from the test motor oil outlet through Double throttle check valve (18), the oil outlet of electro-hydraulic reversing valve and main long-range relief valve (10-4), main back pressure relief valve (10-3), main flow sensor (15-2) connects after return check valve (8-1), return filter (6-1) is got back to fuel tank (2) and is constituted test loop; Also include loader in addition, described loader by the main shaft that loads motor (12-1), test motor (12-2) respectively by shaft coupling and rotational speed and torque instrument (16) formation that links into an integrated entity; Enter the two ends that load motor (12-1) through two one-way valves by the low pressure pump that is connected with fuel tank (2), the two ends that load motor (12-1) also are parallel with back pressure relief valve (10-2), long-range relief valve (10-1), when the test motor begins to rotate, the two loading one-way valves (8-3) at loading motor (12-1) two ends can be closed one automatically, get back to fuel tank (2) formation loading loop through back pressure relief valve (10-2), the long-range relief valve (10-1) at the two ends of loading motor by return check valve (8-1), return filter (6-1) and load the outlet fluid of motor.
2. the deceleration loading device of hydraulic motor test board according to claim 1 is characterized in that described low pressure pump is low pressure gear pump (3), and the oil outlet place also is connected with an one-way valve (5) and relief valve (4), pressure gauge second (9-2).
3. the deceleration loading device of hydraulic motor test board according to claim 1 is characterized in that described in line check valve (8-2), return check valve (8-1) locate to be connected with respectively a pressure gauge first (9-3), pressure gauge (9-1).
4. the deceleration loading device of hydraulic motor test board according to claim 1, it is characterized in that described high pressure oil pump is high pressure Variable plunger pump (19), the oil outlet place also is connected with precursor overflow valve (10-5), long-range relief valve (10-6), and described electro-hydraulic reversing valve is three position four-way directional control valve (1).
5. the deceleration loading device of hydraulic motor test board according to claim 1, the two ends that it is characterized in that described loading motor (12-1) connect loading high-pressure ball valve (7-2,7-3), pressure transducer (11-1,11-2), back pressure relief valve (10-2) respectively, load one-way valve (8-3), long-range relief valve (10-1).
6. the deceleration loading device of hydraulic motor test board according to claim 1 is characterized in that the two ends of described test motor (12-2) connect testing high voltage ball valve (7-4,7-5), temperature transducer (17) respectively; The working connection place is connected with main high-pressure ball valve (7-6) and primary pressure sensor (11-3) in the test loop.
7. the deceleration loading device of hydraulic motor test board according to claim 1 is characterized in that also being connected with on the described test motor (12-2) flow transducer (15-1) and bypass low pressure ball valve (14).
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| CN2010102256870A CN101871478B (en) | 2010-07-07 | 2010-07-07 | Loading device of hydraulic motor test board |
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| CN2010102256870A CN101871478B (en) | 2010-07-07 | 2010-07-07 | Loading device of hydraulic motor test board |
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| CN101871478B CN101871478B (en) | 2012-08-29 |
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| CN102108983A (en) * | 2010-12-28 | 2011-06-29 | 宁夏永旺机电设备制造有限公司 | Hydraulic magnesium pressing machine |
| CN102175435A (en) * | 2010-12-16 | 2011-09-07 | 蚌埠市华泰液力变矩器有限公司 | Test-bed for hydraulic torque converter |
| CN102200152A (en) * | 2011-07-04 | 2011-09-28 | 南京王行航空附件维修工程有限公司 | Performance test system of large-size airplane hydraulic element |
| CN102297181A (en) * | 2010-11-18 | 2011-12-28 | 重庆大学 | Hydraulic control loop of hydraulic system performance test bench of automatic transmission |
| CN103016452A (en) * | 2012-12-14 | 2013-04-03 | 中航力源液压股份有限公司 | Method and device for recovering and using energy produced in hydraulic motor load test |
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| CN109441707A (en) * | 2018-12-21 | 2019-03-08 | 上海电气液压气动有限公司 | From cooling piston motor |
| CN112855666A (en) * | 2021-01-05 | 2021-05-28 | 中联重科股份有限公司 | Loading oil way and loading test oil way |
| CN112855666B (en) * | 2021-01-05 | 2022-03-29 | 中联重科股份有限公司 | Loading oil way and loading test oil way |
| CN114033771A (en) * | 2021-11-10 | 2022-02-11 | 中国铁建重工集团股份有限公司 | Multi-working-condition load simulation test system for hydraulic pump or motor |
| CN114542549A (en) * | 2022-02-17 | 2022-05-27 | 北京华德液压工业集团有限责任公司 | High-precision pressure regulating loop |
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| Publication number | Publication date |
|---|---|
| CN101871478B (en) | 2012-08-29 |
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