CN103711685A - Hydraulic loading testing device - Google Patents
Hydraulic loading testing device Download PDFInfo
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- CN103711685A CN103711685A CN201210373337.8A CN201210373337A CN103711685A CN 103711685 A CN103711685 A CN 103711685A CN 201210373337 A CN201210373337 A CN 201210373337A CN 103711685 A CN103711685 A CN 103711685A
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Abstract
The invention discloses a hydraulic loading testing device. The hydraulic loading testing device comprises a first motor, a coupler, a rectification loop control device, a loading pump, a torque revolution speed sensor, a bidirectional motor, an electro-hydraulic directional control valve, a second motor, a single-action variable pump and an oil supply pump, wherein the first motor is connected with the oil supply pump through the coupler; an outlet of the oil supply pump is connected with an inlet of the rectification loop control device; an outlet of the rectification loop control device is connected with the loading pump; the loading pump is connected with one end of the torque revolution speed sensor through the coupler; the other end of the torque revolution speed sensor is connected with the bidirectional motor; the bidirectional motor is connected with one end of the electro-hydraulic directional control valve; the other end of the electro-hydraulic directional control valve is connected with the single-action variable pump; and the single-action variable pump is connected with the second motor through the coupler. By using the hydraulic loading testing device, reversing stability is improved, hydraulic impact is reduced, and automatic loading is realized. The hydraulic loading testing device has the advantages of simplicity in assembly, low power consumption, low maintenance cost and the like.
Description
Technical field
The present invention relates to a kind of loading test device, particularly relate to a kind of hydraulic loaded testing apparatus.
Background technique
In a lot of Test items of oil hydraulic pump, all require oil hydraulic pump to turn round under different pressures, to test its parameters, the pressure of hydraulic system depends on load.Mainly carry out in the following ways at present load test: 1) mechanical load method hydraulic dynamometer loads: it is the running of hydraulic pump drive oil hydraulic motor that hydraulic dynamometer loads, drive hydraulic dynamometer, motor input hydraulic pressure energy output mechanical energy, hydraulic dynamometer is that oil hydraulic pump loads by oil hydraulic motor.The shortcoming of this load mode is to measure with high pressure resistant flow transducer the output flow of pump, and this is very difficult, therefore can not do the testing property of high pressure, high-power hydraulic pump.2) loading of electric power loading method electric power is the running of hydraulic pump drive oil hydraulic motor, drives generator, motor input hydraulic pressure energy output mechanical energy, and oil hydraulic motor has load, thereby loads to oil hydraulic pump.Generator is converted into electric energy by mechanical energy, and oil temperature can not produce large variation.Better performances when electric power is carried in low speed loading, its shortcoming is to select generator, and structure is more complicated, and energy consumption is larger, is not suitable for high-power pump performance test, applies less.3) to load this be loading method conventional in pump performance test system in the throttling of hydraulic loaded method pump, and current hydraulic loading device exists structure complex structure, volume is large, energy consumption is high, can only rely on hand adjustment throttle valve or hand adjustment relief valve to load can not realize automatic loading.
Summary of the invention
The object of the invention is to provide in order to address the above problem a kind of can realization automatically to load, assemble hydraulic loaded testing apparatus simple and low in energy consumption.
The present invention is achieved by the following technical solutions:
A kind of hydraulic loaded testing apparatus, comprise the first motor, coupling, commutating circuit control gear, load pump, torque rotary speed sensor, reversing motor, electro-hydraulic reversing valve, the second motor, single action variable pump, flow transducer, pressure transducer, the first relief valve, the second relief valve and oil feed pump, described commutating circuit control gear is comprised of four one-way valves, described the first motor is connected with described oil feed pump by coupling, described fuel feeding delivery side of pump is connected with the import of described commutating circuit control gear, described commutating circuit control gear outlet is connected with described load pump, described load pump is connected with one end of described torque rotary speed sensor by coupling, the other end of described torque rotary speed sensor is connected with described reversing motor, described reversing motor is connected with one end of described electro-hydraulic reversing valve, the other end of described electro-hydraulic reversing valve is connected with described single action variable pump, described single action variable pump is connected with described the second motor by coupling, described the second relief valve is connected with the export and import of described oil feed pump respectively, the import of described the first relief valve is connected with the outlet of commutating circuit control gear with described the first pressure transducer respectively, the outlet of described the first relief valve is connected with described second quantity sensor, the import of described second quantity sensor is connected with the outlet of described the second pressure transducer and described electro-hydraulic reversing valve, the other end of described second quantity sensor is connected with described single action variable pump.
The first motor and the second motor and oil feed pump form the power source of whole hydraulic system, for system provides power.Relief valve is for realizing the loading of minimum setting pressure of relief valve and the test process of hydraulic system.Four one-way valves form the commutating circuit control gear of hydraulic systems, in order to the oil circuit of oil-feed and the oil return of switching tests pump, control tested oil hydraulic pump commutation and commutating speed, improve commutation stability, reduce hydraulic shock, have realized loading automatically.The mensuration of the various parameters in hydraulic circuit (pressure, temperature) is measured by traditional pressure gauge and thermometer; The parameter at test pump, motor place is measured by sensor, and is connected with the microcomputer in control cabinet, by the signal output of measuring, carries out related data analysis.
As preferably, described hydraulic loaded testing apparatus also comprises oil purifier, and the import of described oil purifier is connected with the outlet of described electro-hydraulic reversing valve, and the outlet of described oil purifier is connected with the entrance of described single action variable pump.
As preferably, described hydraulic loaded testing apparatus also comprises cooler.
The invention has the beneficial effects as follows:
The present invention has adopted the commutating circuit control gear of four one-way valve composition hydraulic systems, in order to the oil circuit of oil-feed and the oil return of switching tests pump, control tested oil hydraulic pump commutation and commutating speed, improve commutation stability, reduce hydraulic shock, realized automatically and having loaded.The present invention also has the advantages such as simple, the low in energy consumption and maintenance cost of assembling is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of hydraulic loaded testing apparatus of the present invention.
In figure: 1-the first motor, 2-coupling, 3-commutating circuit control gear, 4-load pump, 5-torque rotary speed sensor, 6-reversing motor, 7-electro-hydraulic reversing valve, 8-oil purifier, 9-the second motor, 10-single action variable pump, 11-first flow sensor, 12-the first pressure transducer, 13-the first relief valve, 14-the second relief valve, 15-oil feed pump, 16-cooler, 17-second quantity sensor, 18-the second pressure transducer.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail:
As shown in Figure 1, a kind of hydraulic loaded testing apparatus of the present invention, comprise the first motor 1, coupling 2, commutating circuit control gear 3, load pump 4, torque rotary speed sensor 5, reversing motor 6, electro-hydraulic reversing valve 7, the second motor 9, single action variable pump 10, first flow sensor 11, second quantity sensor 17, the first pressure transducer 12, the second pressure transducer 18, the first relief valve 13, the second relief valve 14 and oil feed pump 15, commutating circuit control gear 3 is comprised of four one-way valves, the first motor 1 is connected with oil feed pump 15 by coupling 2, the outlet of oil feed pump 15 is connected with 3 imports of commutating circuit control gear, 3 outlets of commutating circuit control gear are connected with load pump 4, load pump 4 is connected with one end of torque rotary speed sensor 5 by coupling 2, the other end of torque rotary speed sensor 5 is connected with reversing motor 6, reversing motor 6 is connected with one end of electro-hydraulic reversing valve 7, the other end of electro-hydraulic reversing valve 7 is connected with single action variable pump 10, single action variable pump 10 is connected with the second motor 9 by coupling 2, the second relief valve 14 is connected with the export and import of oil feed pump 15 respectively, the import of the first relief valve 13 is connected with the outlet of commutating circuit control gear 3 with described the first pressure transducer 12 respectively, the outlet of described the first relief valve 13 is connected with second quantity sensor 17, the import of second quantity sensor 17 is connected with the outlet of electro-hydraulic reversing valve 7 with the second pressure transducer 18, the other end of second quantity sensor 17 is connected with single action variable pump 10.
The first motor 1 and the second motor 9 and oil feed pump 15 form the power source of whole hydraulic system, for system provides power.Relief valve is for realizing the loading of minimum setting pressure of relief valve and the test process of hydraulic system.Four one-way valves form the commutating circuit control gear 3 of hydraulic systems, in order to the oil circuit of oil-feed and the oil return of switching tests pump, control tested oil hydraulic pump commutation and commutating speed, improve commutation stability, reduce hydraulic shock, have realized loading automatically.The mensuration of the various parameters in hydraulic circuit (pressure, temperature) is measured by traditional pressure gauge and thermometer; The parameter at test pump, motor place is measured by sensor, and is connected with the microcomputer in control cabinet, by the signal output of measuring, carries out related data analysis.
Described hydraulic loaded testing apparatus also comprises oil purifier 8, and the import of oil purifier 8 is connected with the outlet of electro-hydraulic reversing valve 7, and the outlet of oil purifier 8 is connected with the entrance of single action variable pump 10.Hydraulic loaded testing apparatus also comprises cooler 16, is used for cooling liquid force feed.
Claims (3)
1. a hydraulic loaded testing apparatus, it is characterized in that: comprise the first motor, coupling, commutating circuit control gear, load pump, torque rotary speed sensor, reversing motor, electro-hydraulic reversing valve, the second motor, single action variable pump, flow transducer, pressure transducer, the first relief valve, the second relief valve and oil feed pump, described commutating circuit control gear is comprised of four one-way valves, described the first motor is connected with described oil feed pump by coupling, described fuel feeding delivery side of pump is connected with the import of described commutating circuit control gear, described commutating circuit control gear outlet is connected with described load pump, described load pump is connected with one end of described torque rotary speed sensor by coupling, the other end of described torque rotary speed sensor is connected with described reversing motor, described reversing motor is connected with one end of described electro-hydraulic reversing valve, the other end of described electro-hydraulic reversing valve is connected with described single action variable pump, described single action variable pump is connected with described the second motor by coupling, described the second relief valve is connected with the export and import of described oil feed pump respectively, the import of described the first relief valve is connected with the outlet of commutating circuit control gear with described the first pressure transducer respectively, the outlet of described the first relief valve is connected with described second quantity sensor, the import of described second quantity sensor is connected with the outlet of described the second pressure transducer and described electro-hydraulic reversing valve, the other end of described second quantity sensor is connected with described single action variable pump.
2. hydraulic loaded testing apparatus according to claim 1, it is characterized in that: described hydraulic loaded testing apparatus also comprises oil purifier, the import of described oil purifier is connected with the outlet of described electro-hydraulic reversing valve, and the outlet of described oil purifier is connected with the entrance of described single action variable pump.
3. hydraulic loaded testing apparatus according to claim 1, is characterized in that: described hydraulic loaded testing apparatus also comprises cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210373337.8A CN103711685A (en) | 2012-09-29 | 2012-09-29 | Hydraulic loading testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210373337.8A CN103711685A (en) | 2012-09-29 | 2012-09-29 | Hydraulic loading testing device |
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| CN103711685A true CN103711685A (en) | 2014-04-09 |
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| CN201210373337.8A Pending CN103711685A (en) | 2012-09-29 | 2012-09-29 | Hydraulic loading testing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314924A (en) * | 2014-08-27 | 2015-01-28 | 南京创贝高速传动机械有限公司 | Hydraulic cylinder testing bed system |
| CN107178539A (en) * | 2017-06-19 | 2017-09-19 | 镇江四联机电科技有限公司 | A kind of hydraulic pump Power Recovery testing stand |
| CN110185606A (en) * | 2019-06-17 | 2019-08-30 | 中国民航大学 | A kind of aircraft hydraulic pumps property test platform |
| CN112983800A (en) * | 2021-03-19 | 2021-06-18 | 北京航空航天大学 | Pump environment simulation and test system for electro-hydrostatic actuator |
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| JPS63105290A (en) * | 1986-10-21 | 1988-05-10 | Maruma Jusharyo Kk | Driving and loading device for testing hydraulic equipment |
| CN101603527A (en) * | 2009-06-11 | 2009-12-16 | 中国矿业大学 | A kind of emulsion pump testing system |
| CN202351032U (en) * | 2011-12-14 | 2012-07-25 | 上海天合石油工程股份有限公司 | Hydraulic test bed |
| CN102619812A (en) * | 2012-03-31 | 2012-08-01 | 徐州铭硕机械科技有限公司 | Test stand for self-adaptive power recovering of hydraulic pump |
| CN203009260U (en) * | 2012-09-29 | 2013-06-19 | 成都瑞勃投资有限公司 | Hydraulic pressure loading testing device |
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2012
- 2012-09-29 CN CN201210373337.8A patent/CN103711685A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| JPS63105290A (en) * | 1986-10-21 | 1988-05-10 | Maruma Jusharyo Kk | Driving and loading device for testing hydraulic equipment |
| CN101603527A (en) * | 2009-06-11 | 2009-12-16 | 中国矿业大学 | A kind of emulsion pump testing system |
| CN202351032U (en) * | 2011-12-14 | 2012-07-25 | 上海天合石油工程股份有限公司 | Hydraulic test bed |
| CN102619812A (en) * | 2012-03-31 | 2012-08-01 | 徐州铭硕机械科技有限公司 | Test stand for self-adaptive power recovering of hydraulic pump |
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Non-Patent Citations (1)
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| 芮丰等: "新型矿用节能型液压泵及马达试验台", 《煤矿机电》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314924A (en) * | 2014-08-27 | 2015-01-28 | 南京创贝高速传动机械有限公司 | Hydraulic cylinder testing bed system |
| CN107178539A (en) * | 2017-06-19 | 2017-09-19 | 镇江四联机电科技有限公司 | A kind of hydraulic pump Power Recovery testing stand |
| CN110185606A (en) * | 2019-06-17 | 2019-08-30 | 中国民航大学 | A kind of aircraft hydraulic pumps property test platform |
| CN112983800A (en) * | 2021-03-19 | 2021-06-18 | 北京航空航天大学 | Pump environment simulation and test system for electro-hydrostatic actuator |
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Application publication date: 20140409 |