CN102562563B - Energy-saving stepless pressure regulating type hydraulic system for high-pressure pump performance test bench - Google Patents
Energy-saving stepless pressure regulating type hydraulic system for high-pressure pump performance test bench Download PDFInfo
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- CN102562563B CN102562563B CN201210006513.4A CN201210006513A CN102562563B CN 102562563 B CN102562563 B CN 102562563B CN 201210006513 A CN201210006513 A CN 201210006513A CN 102562563 B CN102562563 B CN 102562563B
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Abstract
The invention relates to an energy-saving stepless pressure regulating hydraulic system for a high-pressure pump performance test bench, which is characterized by comprising a mechanical compensating hydraulic power recovery system. The mechanical compensating hydraulic power recovery system comprises a high-pressure tested pump, an alternating-current motor, a power recovery motor and a main oil tank, an oil inlet of the high-pressure tested pump is connected with an oil outlet of the main oil tank, an oil outlet of the high-pressure tested pump is connected with an oil inlet of the power recovery motor, an oil outlet of the power recovery motor is connected with the main oil tank, a power output end of the power recovery motor is connected with a power input end of the alternating-current motor, and a power output end of the alternating-current motor is connected with a power input end of the high-pressure tested pump. The hydraulic system is energy-saving and capable of reducing energy loss in the high-power hydraulic pump performance testing process greatly, reducing pressure loss, expanding flow testing range, increasing oil pressure testing range and realizing stepless pressure regulation.
Description
Technical field
The present invention relates to a kind of hydraulic system of energy-saving stepless pressure regulating type high-pressure pump performance test bench, be applicable to test high power oil hydraulic pump the performance parameter such as pressure, flow, temperature and rotating speed or and change, and its performance is analyzed.
Background technique
Oil hydraulic pump is the energy element in hydraulic system, its effect is the hydraulic energy that the mechanical energy of motor is converted to fluid, for hydraulic system provides the fluid of certain pressure and flow, be the heart of whole hydraulic system, its performance quality directly affects the working condition of whole hydraulic system.Therefore, there is very important meaning for the accurate test of pump performance.Pump performance test is the important means of distinguishing product quality, improvement structural design, the technological level that improves, guarantee systematic function and promoting product up-gradation.
At present, the mode that the hydraulic system of pump performance test bench mostly adopts non-power to reclaim, its working principle is all that throttling loads, and by produce certain throttle resistance on the fuel-displaced pipeline of oil hydraulic pump, thereby to being loaded by pump testing, carries out test job.The experimental bench system of this form is the simplest, and the required element of the system of building is minimum.But due to not bringing onto load of system, the energy that when test, oil hydraulic pump produces all transforms heat energy, causes energy dissipation, and heating raises oil temperature.To provide cost savings for early investment, but, from long-range use angle analysis, because non-power reclaiming system is in process of the test, electric energy is all converted into heat energy and dissipates, energy loss in the time carrying out life test is very huge especially, particularly more outstanding for this point of high power pump performance test stand.Therefore, above-mentioned prior art is mainly used to test some low power oil hydraulic pumps.
Summary of the invention
In view of the deficiencies in the prior art, the object of the present invention is to provide a kind of for testing the hydraulic system of energy-saving stepless pressure regulating type high-pressure pump performance test bench of high power pump performance.
To achieve these goals, technological scheme of the present invention is: a kind of hydraulic system of energy-saving stepless pressure regulating type high-pressure pump performance test bench, it is characterized in that: comprise Hydraulic Power Callback System with Mechanical Compensation, described Hydraulic Power Callback System with Mechanical Compensation comprises that high pressure is by pump testing, AC motor, Power Recovery motor and main fuel tank, described high pressure is connected with the oil outlet of main fuel tank by the filler opening of pump testing, described high pressure is connected with the filler opening of Power Recovery motor by the oil outlet of pump testing, the oil outlet of described Power Recovery motor is connected with main fuel tank, the clutch end of described Power Recovery motor is connected with the power intake of AC motor, the clutch end of described AC motor is connected by the power intake of pump testing with high pressure.
Further, the hydraulic system of this high-pressure pump performance test bench also comprises hydraulic control system, described hydraulic control system comprises and is arranged on tested the first cartridge valve with the first solenoid directional control valve that pumps hydraulic fluid port of high pressure, the pilot stage of described the first cartridge valve is connected with the second solenoid directional control valve and the 3rd solenoid directional control valve, on the branch road of described the second solenoid directional control valve, be connected with the first relief valve and proportional pressure control valve, on the branch road of described the 3rd solenoid directional control valve, be connected with the second relief valve, the oil outlet of described the first cartridge valve is connected with the second cartridge valve with the 4th solenoid directional control valve, the 3rd cartridge valve with the 5th solenoid directional control valve and the 4th cartridge valve with the 6th solenoid directional control valve, the oil outlet of described the 3rd cartridge valve is connected with small flowmeter, the oil outlet of described the 4th cartridge valve is connected with large capacity meter.
Further, the hydraulic system of this high-pressure pump performance test bench also comprises filtration temperature control system, described filtration temperature control system comprises: be arranged on the tested high pressure filter that pumps hydraulic fluid port of high pressure, be arranged on the first return filter between Power Recovery motor and main fuel tank, be arranged on the second return filter between the first cartridge valve and main fuel tank, be successively set on the first oil absorption filter between return opening and the oil outlet of main fuel tank, filtration temperature control pump, return line coarse-grain filtering device, return line fine filter, cooler and tee ball valve by the first Electric Machine Control.
Further, the hydraulic system of this high-pressure pump performance test bench also comprises leakage of oil reclaiming system, and described leakage of oil reclaiming system comprises and is arranged on leakage of oil and reclaims the second oil absorption filter between fuel tank and main fuel tank, leakage of oil recovery pump and the 3rd return filter by the second Electric Machine Control.
Further, described main fuel tank is provided with heater, the first level control relay and air-strainer; The oil outlet of described main fuel tank is provided with electric control valve and temperature transducer.
Further, described high pressure is provided with B/P EGR Back Pressure Transducer EGR and the first pressure gauge by the filler opening of pump testing, and described high pressure is provided with pressure transducer and the second pressure gauge by the oil outlet of pump testing; Described high pressure is provided with the 5th cartridge valve with the 7th solenoid directional control valve between the oil outlet of pump testing and the filler opening of Power Recovery motor.
Further, the clutch end of described AC motor and high pressure are provided with torque rotary speed sensor between the power intake of pump testing, between described AC motor and Power Recovery motor, are provided with clutch, and described AC motor is connected with frequency variator.
Further, between the oil outlet of described Power Recovery motor and main fuel tank, be provided with flowmeter.
Further, the pilot stage of described the first cartridge valve is provided with the 3rd pressure gauge.
Further, described leakage of oil is reclaimed in fuel tank and is provided with the second level control relay.
Compared with prior art, the invention has the advantages that: the hydraulic system of this high-pressure pump performance test bench adopts mechanical compensation Power Recovery mode, for the testing property of high power oil hydraulic pump, the most of energy producing in process of the test can be reclaimed, greatly reduce the energy loss in test process; In addition, also adopt hydraulic proportional loading technique to realize the stepless voltage regulation test of pump, adopt large flow cartridge valve that the pressure loss is reduced, make Laboratory Furniture detect flow and can reach 300L/min.
Brief description of the drawings
Fig. 1 is the principle schematic of the embodiment of the present invention.
In figure: 1-high pressure is by pump testing, 2-torque rotary speed sensor, 3-AC motor, 4-frequency variator, 5-clutch, 6-the first return filter, 7-flowmeter, 8-Power Recovery motor, 9-the 5th cartridge valve, 10-the 7th solenoid directional control valve, 11-pressure transducer, 12-the second pressure gauge, 13-high pressure filter, 14-the first cartridge valve, 15-the first solenoid directional control valve, 16-the first relief valve, 17-the second solenoid directional control valve, 18-proportional pressure control valve, 19-the 3rd solenoid directional control valve, 20-the second relief valve, 21-the 3rd pressure gauge, 22-the 4th solenoid directional control valve, 23-the second cartridge valve, 24-the 5th solenoid directional control valve, 25-the 3rd cartridge valve, 26-small flowmeter, 27-the 6th solenoid directional control valve, 28-the 4th cartridge valve, 29-large capacity meter, 30-the second return filter, 31-the 3rd return filter, 32-leakage of oil recovery pump, 33-the second oil absorption filter, 34-the second motor, 35-the second level control relay, 36-the first oil absorption filter, 37-filters temperature control pump, 38-the first motor, 39-return line coarse-grain filtering device, 40-return line fine filter, 41-cooler, 42-heater, 43-the first level control relay, 44-air-strainer, 45-tee ball valve, 46-electric control valve, 47-temperature transducer, 48-B/P EGR Back Pressure Transducer EGR, 49-the first pressure gauge, 50-main fuel tank, fuel tank is reclaimed in 51-leakage of oil.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further elaborated.
With reference to figure 1, a kind of hydraulic system of energy-saving stepless pressure regulating type high-pressure pump performance test bench, it is characterized in that: comprise Hydraulic Power Callback System with Mechanical Compensation, described Hydraulic Power Callback System with Mechanical Compensation comprises that high pressure is by pump testing 1, AC motor 3, Power Recovery motor 8 and main fuel tank 50, described high pressure is connected with the oil outlet of main fuel tank 50 by the filler opening of pump testing 1, described high pressure is connected with the filler opening of Power Recovery motor 8 by the oil outlet of pump testing 1, the oil outlet of described Power Recovery motor 8 is connected with main fuel tank 50, the clutch end of described Power Recovery motor 8 is connected with the power intake of AC motor 3, the clutch end of described AC motor 3 is connected by the power intake of pump testing 1 with high pressure.
In the present embodiment, the hydraulic system of this high-pressure pump performance test bench also comprises hydraulic control system, described hydraulic control system comprises and is arranged on high pressure by first cartridge valve 14 with the first solenoid directional control valve 15 of pump testing 1 oil outlet, the pilot stage of described the first cartridge valve 14 is provided with the 3rd pressure gauge 21, for measuring pressure herein; The pilot stage of described the first cartridge valve 14 is connected with the second solenoid directional control valve 17 and the 3rd solenoid directional control valve 19, on the branch road of described the second solenoid directional control valve 17, be connected with the proportional pressure control valve 18 of pressure to the first relief valve 16 of 40MPa and pressure to 40MPa, on the branch road of described the 3rd solenoid directional control valve 19, be connected with second relief valve 20 of pressure to 20MPa, for the selection of controlled loading valve to realize stepped voltage regulation; The oil outlet of described the first cartridge valve 14 is connected with the second cartridge valve 23, the 3rd cartridge valve 25 with the 5th solenoid directional control valve 24 and the 4th cartridge valve 28 with the 6th solenoid directional control valve 27 with the 4th solenoid directional control valve 22, the oil outlet of described the 3rd cartridge valve 25 is connected with small flowmeter 26, the oil outlet of described the 4th cartridge valve 28 is connected with large capacity meter 29, can between without flowmeter, small flowmeter 26 and large capacity meter 29, select for realizing flow measurement mode.
In the present embodiment, the hydraulic system of this high-pressure pump performance test bench also comprises filtration temperature control system, described filtration temperature control system comprises: be arranged on high pressure by the high pressure filter 13 of pump testing 1 oil outlet, be arranged on the first return filter 6 between Power Recovery motor 8 and main fuel tank 50, be arranged on the second return filter 30 between the first cartridge valve 14 and main fuel tank 50, be successively set on the first oil absorption filter 36 between return opening and the oil outlet of main fuel tank 50, the filtration temperature control pump 37 of being controlled by the first motor 38, return line coarse-grain filtering device 39, return line fine filter 40, cooler 41 and tee ball valve 45.
In the present embodiment, the hydraulic system of this high-pressure pump performance test bench also comprises leakage of oil reclaiming system, and described leakage of oil reclaiming system comprises the second oil absorption filter 33, the leakage of oil recovery pump 32 of being controlled by the second motor 34 and the 3rd return filter 31 that are arranged between leakage of oil recovery fuel tank 51 and main fuel tank 50.Described leakage of oil is reclaimed in fuel tank 51 and is provided with the second level control relay 35, reclaims the liquid level of fuel tank 51 for controlling leakage of oil.
In the present embodiment, described main fuel tank 50 is provided with heater 42, the first level control relay 43 and air-strainer 44, described heater 42 is for heating fluid during lower than standard temperature in oil temperature, described the first level control relay 43 is for controlling main fuel tank 50 liquid levels, and described air-strainer 44 is for filtering the air that enters main fuel tank 50.The oil outlet of described main fuel tank 50 is provided with electric control valve 46 and temperature transducer 47, and described electric control valve 46 is for regulating high pressure by the degree of vacuum at pump testing 1 filler opening place, and described temperature transducer 47 is for measuring oil temperature.
In the present embodiment, described high pressure is provided with B/P EGR Back Pressure Transducer EGR 48 and the first pressure gauge 49 by the filler opening of pump testing 1, and described B/P EGR Back Pressure Transducer EGR 48 and the first pressure gauge 49 are for measuring and showing that high pressure is by the degree of vacuum at pump testing 1 filler opening place.Described high pressure is provided with pressure transducer 11 and the second pressure gauge 12 by the oil outlet of pump testing 1, and described pressure transducer 11 and the second pressure gauge 12 are for measuring and showing that high pressure is by the degree of vacuum at pump testing 1 oil outlet place.Described high pressure is provided with the 5th cartridge valve 9 with the 7th solenoid directional control valve 10 between the oil outlet of pump testing 1 and the filler opening of Power Recovery motor 8, reclaim whether enabling of motor 8 for power ratio control.
In the present embodiment, the clutch end of described AC motor 3 and high pressure are provided with torque rotary speed sensor 2 between the power intake of pump testing 1, for measuring high pressure by the torque of pump testing 1 and rotating speed.Between described AC motor 3 and Power Recovery motor 8, be provided with clutch 5, for selecting whether to adopt Power Recovery mode.Described AC motor 3 is connected with frequency variator, for controlling the rotating speed of AC motor 3.Between the oil outlet of described Power Recovery motor 8 and main fuel tank 50, be provided with flowmeter 7, for measuring the flow of the Power Recovery motor 8 of flowing through.
In the present embodiment, described the first cartridge valve 14, the second cartridge valve 23, the 3rd cartridge valve 25, the 4th cartridge valve 28 and the 5th cartridge valve 9 are directional control valve, described the first solenoid directional control valve 15 and the 3rd solenoid directional control valve 19 are bi-bit bi-pass solenoid directional control valve, described the second solenoid directional control valve 17 and the 7th solenoid directional control valve 10 are two position, three-way electromagnetic change valve, and described the 4th solenoid directional control valve 22, the 5th solenoid directional control valve 24 and the 6th solenoid directional control valve 27 are two-position four-way solenoid directional control valve.
In the present embodiment, the hydraulic system of this high-pressure pump performance test bench is applicable to measure high power oil hydraulic pump, it measures peak output can reach 200kW, pressure maximum can reach 40MPa, peak rate of flow can reach 300L/min, its working principle is as follows: the tested pump 1 of output shaft band dynamic high-pressure of described AC motor 3 rotates, the partial pressure oil that described high pressure is exported by pump testing 1 through the first cartridge valve 14 by the second cartridge valve 23, main fuel tank 50 is got back on a certain road in the 3rd cartridge valve 25 or the 4th cartridge valve 28, thereby realize flow measurement mode without flowmeter, selection between small flowmeter 26 and large capacity meter 29.Wherein, the selection of the second cartridge valve 23, the 3rd cartridge valve 25 or the 4th cartridge valve 28 is by their pilot-actuated valve---and the 4th solenoid directional control valve 22, the 5th solenoid directional control valve 24 and the 6th solenoid directional control valve 27 are controlled.Meanwhile, a small amount of fluid of output acts directly on the first relief valve 16, proportional pressure control valve 18 or second relief valve 20 of the first cartridge valve 14 pilot stage through high pressure filter 13, by pilot pressure effect, system is loaded.Wherein, the selection that loads relief valve is controlled by the second solenoid directional control valve 17 and the 3rd solenoid directional control valve 19.In addition, unnecessary fluid reclaims motor 8 via the 5th cartridge valve 9 driving powers and rotates, the output shaft of described Power Recovery motor 8 is connected with the input shaft of AC motor 3 by clutch 5, thereby drive AC motor 3 to rotate, thereby power reciprocation cycle between AC motor 3, high pressure are by pump testing 1, Power Recovery motor 8, AC motor 3 realize mechanical compensation Power Recovery.
In the present embodiment, described filtration temperature control system drives filtration temperature control pump 37 to suck fluid from main fuel tank 50 by the first motor 38, hydraulic oil is after the junior return line coarse-grain filtering device 39 of filter precision, enter again the return line fine filter 40 that filter precision is higher and realize double-filtration, then, after supercooler 41 is cooling,, selected enter high pressure by pump testing 1 inlet port or directly flow back to main fuel tank 50 by tee ball valve 45 by pump testing 1 inlet port uninterrupted requirement according to high pressure.
In the present embodiment, the liquid level that reclaims fuel tank 51 when leakage of oil increases gradually, while reaching warning line, described leakage of oil is reclaimed the second level control relay 35 in fuel tank 51 and is automatically controlled the second motors 34 and turn round, thereby makes leakage of oil recovery pump 32 that the fluid of leakage is returned and in main fuel tank 50, carried out recycling.Because the oil contamination that system is revealed is more serious, therefore, the second oil absorption filter 33 is housed respectively for the inlet port of described leakage of oil reclaiming system and return opening and the 3rd return filter 31 filters fluid.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (1)
1. the hydraulic system of an energy-saving stepless pressure regulating type high-pressure pump performance test bench, it is characterized in that: comprise Hydraulic Power Callback System with Mechanical Compensation, described Hydraulic Power Callback System with Mechanical Compensation comprises that high pressure is by pump testing, AC motor, Power Recovery motor and main fuel tank, described high pressure is connected with the oil outlet of main fuel tank by the filler opening of pump testing, described high pressure is connected with the filler opening of Power Recovery motor by the oil outlet of pump testing, the oil outlet of described Power Recovery motor is connected with main fuel tank, the clutch end of described Power Recovery motor is connected with the power intake of AC motor, the clutch end of described AC motor is connected by the power intake of pump testing with high pressure,
Also comprise hydraulic control system, described hydraulic control system comprises and is arranged on tested the first cartridge valve with the first solenoid directional control valve that pumps hydraulic fluid port of high pressure, the pilot stage of described the first cartridge valve is connected with the second solenoid directional control valve and the 3rd solenoid directional control valve, on the branch road of described the second solenoid directional control valve, be connected with the first relief valve and proportional pressure control valve, on the branch road of described the 3rd solenoid directional control valve, be connected with the second relief valve, the oil outlet of described the first cartridge valve is connected with the second cartridge valve with the 4th solenoid directional control valve, the 3rd cartridge valve with the 5th solenoid directional control valve and the 4th cartridge valve with the 6th solenoid directional control valve, the oil outlet of described the 3rd cartridge valve is connected with small flowmeter, the oil outlet of described the 4th cartridge valve is connected with large capacity meter,
Also comprise filtration temperature control system, described filtration temperature control system comprises: be arranged on the tested high pressure filter that pumps hydraulic fluid port of high pressure, be arranged on the first return filter between Power Recovery motor and main fuel tank, be arranged on the second return filter between the first cartridge valve and main fuel tank, be successively set on the first oil absorption filter between return opening and the oil outlet of main fuel tank, filtration temperature control pump, return line coarse-grain filtering device, return line fine filter, cooler and tee ball valve by the first Electric Machine Control;
Also comprise leakage of oil reclaiming system, described leakage of oil reclaiming system comprises and is arranged on leakage of oil and reclaims the second oil absorption filter between fuel tank and main fuel tank, leakage of oil recovery pump and the 3rd return filter by the second Electric Machine Control; Described main fuel tank is provided with heater, the first level control relay and air-strainer; The oil outlet of described main fuel tank is provided with electric control valve and temperature transducer; Described high pressure is provided with B/P EGR Back Pressure Transducer EGR and the first pressure gauge by the filler opening of pump testing, and described high pressure is provided with pressure transducer and the second pressure gauge by the oil outlet of pump testing; Described high pressure is provided with the 5th cartridge valve with the 7th solenoid directional control valve between the oil outlet of pump testing and the filler opening of Power Recovery motor; The clutch end of described AC motor and high pressure are provided with torque rotary speed sensor between the power intake of pump testing, between described AC motor and Power Recovery motor, are provided with clutch, and described AC motor is connected with frequency variator; Between the oil outlet of described Power Recovery motor and main fuel tank, be provided with flowmeter; The pilot stage of described the first cartridge valve is provided with the 3rd pressure gauge; Described leakage of oil is reclaimed in fuel tank and is provided with the second level control relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210006513.4A CN102562563B (en) | 2012-01-11 | 2012-01-11 | Energy-saving stepless pressure regulating type hydraulic system for high-pressure pump performance test bench |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210006513.4A CN102562563B (en) | 2012-01-11 | 2012-01-11 | Energy-saving stepless pressure regulating type hydraulic system for high-pressure pump performance test bench |
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| Publication Number | Publication Date |
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| CN102562563A CN102562563A (en) | 2012-07-11 |
| CN102562563B true CN102562563B (en) | 2014-10-01 |
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| CN201210006513.4A Expired - Fee Related CN102562563B (en) | 2012-01-11 | 2012-01-11 | Energy-saving stepless pressure regulating type hydraulic system for high-pressure pump performance test bench |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775326A (en) * | 2014-02-21 | 2014-05-07 | 厦门伍纵船舶液压技术有限公司 | Power recovery test-bed for mechanical-compensation type hydraulic pump |
| CN103982489B (en) * | 2014-06-03 | 2016-09-07 | 中南大学 | The modular control apparatus tested for hydraulic pump and hydraulic motor |
| CN104481971B (en) * | 2014-12-15 | 2017-01-11 | 中铁隧道集团有限公司 | Torque-type hydraulic pump and hydraulic motor power recovery test platform |
| CN104481974B (en) * | 2014-12-19 | 2017-09-12 | 上海电气液压气动有限公司 | Closed Hydraulic Pump Characteristic Test System |
| CN104791331A (en) * | 2015-04-23 | 2015-07-22 | 阜新德尔汽车部件股份有限公司 | Performance test platform for electrohydraulic pump |
| CN104806506A (en) * | 2015-04-23 | 2015-07-29 | 阜新德尔汽车部件股份有限公司 | Electrohydraulic pump multistage loading durability test bed |
| CN106523544B (en) * | 2016-10-13 | 2018-08-21 | 浙江大学 | A kind of controller for supplying oil for hydraulic clutch |
| CN106402056A (en) * | 2016-10-21 | 2017-02-15 | 福州大学 | Hydraulic system used for measuring airborne noise level of hydraulic motor |
| CN107339286B (en) * | 2017-07-06 | 2018-08-14 | 杭州华泰电液成套技术有限公司 | A kind of mechanical compensation Power Recovery type pump motor test platform and its method |
| CN110878781B (en) * | 2019-11-22 | 2021-10-22 | 中铁高新工业股份有限公司 | Shield constructs quick-witted pump-motor combined test platform |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1987126A (en) * | 2006-12-14 | 2007-06-27 | 烟台奔腾汽车检测维修设备制造有限公司 | Hydraulic central valve for lifter synchronous lifting and its control and using method |
| CN101328881A (en) * | 2008-07-24 | 2008-12-24 | 宁波恒力液压机械制造有限公司 | Hydraulic pump test stand |
| CN102297181A (en) * | 2010-11-18 | 2011-12-28 | 重庆大学 | Hydraulic control loop of hydraulic system performance test bench of automatic transmission |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4245065B2 (en) * | 2007-06-07 | 2009-03-25 | ダイキン工業株式会社 | Fluid pressure unit |
-
2012
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1987126A (en) * | 2006-12-14 | 2007-06-27 | 烟台奔腾汽车检测维修设备制造有限公司 | Hydraulic central valve for lifter synchronous lifting and its control and using method |
| CN101328881A (en) * | 2008-07-24 | 2008-12-24 | 宁波恒力液压机械制造有限公司 | Hydraulic pump test stand |
| CN102297181A (en) * | 2010-11-18 | 2011-12-28 | 重庆大学 | Hydraulic control loop of hydraulic system performance test bench of automatic transmission |
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