CN104074839A - Hydraulic motor testbed - Google Patents
Hydraulic motor testbed Download PDFInfo
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- CN104074839A CN104074839A CN201410307125.9A CN201410307125A CN104074839A CN 104074839 A CN104074839 A CN 104074839A CN 201410307125 A CN201410307125 A CN 201410307125A CN 104074839 A CN104074839 A CN 104074839A
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- 230000001808 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 52
- 239000002828 fuel tank Substances 0.000 claims description 34
- 239000010705 motor oil Substances 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007689 inspection Methods 0.000 abstract 3
- 230000023298 conjugation with cellular fusion Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000021037 unidirectional conjugation Effects 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static Effects 0.000 description 1
Abstract
The invention discloses a hydraulic motor testbed. The hydraulic motor testbed comprises a loading unit and an inspection waiting unit, a loading motor of the loading unit and an inspection waiting motor of the inspection waiting unit are arranged on a motor testbed rack and connected through a coupling, and the coupling is provided with a rotating speed sensor. The hydraulic motor testbed uses proportion, sensing and other like technologies; a console gathers and controls intensively to manually and automatically control the test for a tested hydraulic motor to control the rotating speed, pressure, temperature, flow rate, load and other similar parameters, display each working parameter of the system, store and print history test parameters and real-time test parameters and judge the performance of the tested hydraulic motor.
Description
Technical field
The present invention relates to a kind of hydraulic test equipment, specifically a kind of hydraulic motor test stand.
Background technique
Oil hydraulic motor is the core hydraulic element of engineering machinery, and its performance characteristics has directly determined the performance of engineering machinery.The properties that overhauls and maintain the oil hydraulic motor after high-quality oil hydraulic motor and check maintenance just seems extremely important, therefore in the urgent need to a kind of testing apparatus, can repair and change the imported hydraulic motor that spare part re-assemblies to process, carry out running-in test and check test, whether qualified to identify the performance of the rear product of repairing.
Summary of the invention
Technical problem to be solved by this invention is, shortcoming for above prior art, propose a kind of hydraulic motor test stand, can carry out manual and automatic Control experiment to tested liquid pressure motor, realize tested hydraulic motor rotary speed, pressure, temperature, flow, the isoparametric control of load.
In order to solve the problems of the technologies described above, the invention provides a kind of hydraulic motor test stand, comprise load unit and unit to be checked; Described load unit comprises load fuel tank, load integrated package assembly and load oil hydraulic motor, described load fuel tank has oil outlet and return opening, described oil outlet place is mounting ball valve, vane-type oil pump and one-way valve successively, described one-way valve outlet is provided with triplate line, the first branch road is connected with described load integrated package assembly with hydraulic filter through pipe bundle condenser, and the second branch road is directly connected with described load integrated package assembly by the road; The oil outlet of described load integrated package assembly is connected with described load motor, the return opening of described load motor is connected with the return opening of load fuel tank through hydraulic filter, between the return opening of described load motor and hydraulic filter, be provided with overflow branch road, relief valve be installed on described overflow branch road and be connected with described the first branch road;
Described unit to be checked comprises main fuel tank, pump discharge integrated package, motor outlet integrated package to be checked and motor oil return integrated package to be checked, described main fuel tank has oil outlet and return opening, described oil outlet is through ball valve, hydraulic axis plug pump is connected with described motor outlet integrated package to be checked with pump discharge integrated package, the oil outlet of described motor outlet integrated package to be checked is connected with motor to be measured, the return opening of described motor to be measured by return line through motor oil return integrated package to be checked, after the filter of high-precision hydraulic oil and motor oil return pipe bundle condenser to be measured series connection, be connected with the return opening of described main fuel tank, the motor to be checked of the load motor of load unit and unit to be checked is arranged on motor test rig frame, and is connected by coupling, and speed probe is installed on coupling.
The present invention can stepless loading moment of torsion by load oil hydraulic motor, by the control of flow, can carry out testing under various speed conditions, comprises the qualitative speed test of minimum steady.Test bench adopts high-precision pressure sensor, flow transducer, torque sensor and temperature transducer to detect in real time, guarantees to be tested every duty parameter of oil hydraulic motor accurately and reliably.
The technological scheme that the present invention further limits is: aforesaid hydraulic motor test stand, described load integrated package assembly comprises that proportional pressure control valve is connected with the rectifier bridge road being comprised of four one-way valves, described proportional pressure control valve is connected with the second branch road, the first interface on described ballast bridge road is connected with described proportional pressure control valve, second, four interfaces on ballast bridge road are connected with load oil hydraulic motor, and the 3rd interface on described ballast bridge road is connected with the hydraulic filter of described the first branch road; Between the first interface on described ballast bridge road and proportional pressure control valve, pressure transducer and temperature transducer are housed.
Aforesaid hydraulic motor test stand, described motor outlet integrated package to be checked comprises proportional pressure control valve, hydraulic filter, flow transducer and three-position four-way hydraulic solenoid valve, the A of described three-position four-way hydraulic solenoid valve, B mouth are connected with motor to be measured respectively, the P mouth of described three-position four-way hydraulic solenoid valve is connected with pump discharge integrated package through described flow transducer, and the T mouth of described three-position four-way hydraulic solenoid valve is connected with described return line through hydraulic filter, proportional pressure control valve.
Aforesaid hydraulic motor test stand, described pump discharge integrated package comprises one-way valve, hydraulic filter, proportional pressure control valve and accumulator, described one-way valve and hydraulic filter series connection, described check valve inlet connecting fluid last item plug pump, the outlet of described hydraulic filter is connected with described motor outlet integrated package to be checked, on the pipeline that described hydraulic filter is connected with described motor outlet integrated package to be checked, pressure transducer and accumulator are installed, the outlet of described hydraulic filter is provided with the second overflow branch road, and on the second overflow branch road, proportion of installation relief valve is connected with return line.
Aforesaid hydraulic motor test stand, described motor oil return integrated package to be checked comprises that hydraulic filter, proportional pressure control valve and flow transducer are composed in series successively, are separately installed with temperature transducer and pressure transducer at the two ends of described proportional pressure control valve.
Described in aforesaid hydraulic motor test stand, on the pipeline of the A of three-position four-way hydraulic solenoid valve, B mouth, pressure transducer and temperature transducer are all installed.
Aforesaid hydraulic motor test stand, the P mouth place of described three-position four-way hydraulic solenoid valve is provided with exhaust-valve, to guarantee the stable operation of three-position four-way hydraulic solenoid valve, reduces rate of fault.
Aforesaid hydraulic motor test stand, the shell side cooling liquid inlet of described motor oil return pipe bundle condenser to be measured is provided with two two logical electromagnetic water valves.
Further, aforesaid hydraulic motor test stand, is all provided with temperature transducer on described load fuel tank and main fuel tank, and the oil outlet place of described load fuel tank and main fuel tank is all provided with hydraulic filter.
Beneficial effect of the present invention: the present invention is by detecting by oil return flow, leakage flow, moment of torsion and the pressure of test oil hydraulic motor, through data processing, reflection, by the various performances of test oil hydraulic motor, provides science data for improving unfailing performance and the quality of product comprehensively.The technology such as the whole adoption rates of test stand of the present invention, sensing, by operating console, concentrated to gather and control, tested liquid pressure motor is carried out to manual and automatic Control experiment, realization is to rotating speed, pressure, temperature, flow, the isoparametric control of load, the work in every parameter of display system, storage history of printing test parameter and real-time testing parameter, to being differentiated by the performance of test oil hydraulic motor.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below the present invention is described in further detail:
embodiment 1
A kind of hydraulic motor test stand that the present embodiment provides, structure as shown in Figure 1, comprise load unit and unit to be checked, load unit comprises load fuel tank 18, load integrated package assembly 25 and load oil hydraulic motor 23, load integrated package assembly comprises that proportional pressure control valve 15 is connected with the rectifier bridge road 14 being comprised of four one-way valves, load fuel tank 18 has oil outlet and return opening, oil outlet place is mounting ball valve successively, vane-type oil pump 16 and one-way valve 19, one-way valve outlet is provided with triplate line 13, the first branch road is connected with load integrated package assembly with hydraulic filter through pipe bundle condenser 24, the second branch road is directly connected with load integrated package assembly 25 by the road, proportional pressure control valve 15 in load integrated package assembly 25 is connected with the second branch road, the first interface on ballast bridge road 14 is connected with proportional pressure control valve 15, second of ballast bridge road, four interfaces are connected with load oil hydraulic motor 23, the 3rd interface on ballast bridge road is connected with the hydraulic filter of the first branch road, between the first interface on ballast bridge road 14 and proportional pressure control valve, pressure transducer and temperature transducer are housed, the return opening of load motor is connected with 18 return openings of load fuel tank through hydraulic filter 12, is provided with overflow branch road between the return opening of load motor and hydraulic filter, relief valve 17 is installed on overflow branch road and is connected with the first branch road.
Unit to be checked comprises main fuel tank 11, pump discharge integrated package 3, motor outlet integrated package 28 to be checked and motor oil return integrated package 1 to be checked, motor outlet integrated package 28 to be checked comprises proportional pressure control valve 31, hydraulic filter 33, flow transducer 35 and three-position four-way hydraulic solenoid valve 21, the A of three-position four-way hydraulic solenoid valve 21, B mouth is connected with motor 36 to be measured respectively, A, pressure transducer and temperature transducer are all installed on the pipeline of B mouth, the P mouth of three-position four-way hydraulic solenoid valve is connected with pump discharge integrated package through flow transducer 35, P mouth place is provided with exhaust-valve 20, the T mouth of three-position four-way hydraulic solenoid valve is through hydraulic filter 28, proportional pressure control valve 31 is connected with return line, pump discharge integrated package 3 comprises one-way valve 38, hydraulic filter 37, proportional pressure control valve 39 and accumulator 30, one-way valve 38 and hydraulic filter 37 series connection, check valve inlet connecting fluid last item plug pump 4, the outlet of hydraulic filter is connected with the three-position four-way hydraulic solenoid valve P mouth of motor outlet integrated package to be checked, on the pipeline that hydraulic filter is connected with motor outlet integrated package to be checked, pressure transducer and accumulator 30 are installed, the outlet of hydraulic filter is provided with the second overflow branch road, and on the second overflow branch road, proportion of installation relief valve 39 is connected with return line, motor oil return integrated package 1 to be checked comprises that hydraulic filter 40, proportional pressure control valve 29 and flow transducer 32 are composed in series successively, are separately installed with temperature transducer and pressure transducer at the two ends of proportional pressure control valve 29.Main fuel tank has oil outlet and return opening, oil outlet is connected with motor outlet integrated package to be checked through ball valve 9, hydraulic axis plug pump 4 and pump discharge integrated package, the oil outlet of motor outlet integrated package to be checked is connected with motor to be measured, the return opening of motor to be measured is connected with the return opening of main fuel tank after motor oil return integrated package to be checked, the filter 5 of high-precision hydraulic oil and motor oil return pipe bundle condenser to be measured 8 series connection by return line, and the shell side cooling liquid inlet of motor oil return pipe bundle condenser to be measured is provided with two two logical electromagnetic water valves 6; The motor to be checked of the load motor of load unit and unit to be checked is arranged on motor test rig frame 22, and is connected by coupling, and speed probe is installed on coupling.
On the load fuel tank of the present embodiment and main fuel tank, temperature transducer 10,10 ' is all installed, the oil outlet place of load fuel tank and main fuel tank is all provided with hydraulic filter.
The hydraulic axis plug pump of unit to be checked adopts YVP250M frequency control motor to mate, drag the hydraulic axis plug pump of A2F55, and hydraulic oil container, hydraulic filter, proportional pressure control valve, one-way valve, selector valve, fluid cooler, pressure transducer, temperature transducer, flow transducer etc., set up into a complete unit to be checked, for giving by test oil hydraulic motor, the hydraulic energy source that is no less than 60L/min is provided, make it by hydraulic energy, convert mechanical energy to, drag load motor and oil hydraulic pump closed type hydraulic system thereof, thereby can carry out every test of oil hydraulic motor.Main fuel tank is when design, fully taking into account by the highest test speed of test oil hydraulic motor is 12000r/min, the hydraulic energy source that is no less than 60L/min need to be provided, fully take into account the heat radiation factor of fluid, the actual volume of fuel tank is 200 liters, material selection stainless steel, fuel tank is provided with fuel level indicator, air-strainer and oil temperature sensor.
Load unit adopts blade hydraulic pump, hydraulic filter, proportional pressure control valve, fluid cooler, pressure transducer, temperature transducer and load fuel tank, in conjunction with load motor, as load pump, use, the bridge type return of building, sets up into a complete oil hydraulic pump closed type hydraulic system.Owing to adopting oil hydraulic motor to use as load pump, not only efficiency can reduce, along with increasing of rotating speed also can form not foot phenomenon of serious oil suction, so, the present embodiment adopts blade hydraulic pump as slippage pump, carry out repairing to load pump import, effectively guarantee the normal work of closed type hydraulic system, thereby ensured the performance test of hydraulic motor system.
The electrical control of the present embodiment adopt NI company based on LabVIEW oil hydraulic motor test system, running environment is WINDOWS2000, to realize the graphical state of common condition, show, can show all tests by multilayer split screen, and the printing of recording corresponding test data and correlation properties curve, in addition, TT&C system has the automatic configuration feature of common condition, patterned test procedure editing interface can be provided, and test operation personnel can edit test procedure, store and the multinomial work such as deletion.Realize data capture and Control card centralized control, operation rationally, safe and reliable.
The test stand of the present embodiment in use, motor rotary speed to be measured is 8800r/min, inlet pressure is 26.75 Mpa ± 0.4Mpa, import oil temperature is 52 ℃ ± 6 ℃, outlet pressure and return pressure are under 3.5 Mpa, to turn round 1 minute, then pin motor drive shaft in case spline is moving, inlet pressure is increased to 31Mpa ± 0.34Mpa, housing return pressure is increased to 0.69 Mpa from 0, oil temperature is 38 ℃ ± 14 ℃ pressurizes 2 minutes, and each place, mating face of motor and housing, minute oil cap surface etc. should not form and drip shape leakage; Axle tail sealing place leakage rate is not more than 7.5mL/h (exchange is tested once after importing and exporting again).Then motor to be measured is imported and exported and blocked, the pressure that passes into 0.7 Mpa from return opening carries out static pressure test, and half an hour time, each mating face has not allowed oil impregnate, and axle tail sealing place leakage of oil amount is no more than one half an hour.
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought proposing according to the present invention, and any change of doing on technological scheme basis, within all falling into protection domain of the present invention.
Claims (9)
1. a hydraulic motor test stand, comprises load unit and unit to be checked, it is characterized in that:
Described load unit comprises load fuel tank, load integrated package assembly and load oil hydraulic motor, described load fuel tank has oil outlet and return opening, described oil outlet place is mounting ball valve, vane-type oil pump and one-way valve successively, described one-way valve outlet is provided with triplate line, the first branch road is connected with described load integrated package assembly with hydraulic filter through pipe bundle condenser, and the second branch road is directly connected with described load integrated package assembly by the road; The oil outlet of described load integrated package assembly is connected with described load motor, the return opening of described load motor is connected with the return opening of load fuel tank through hydraulic filter, between the return opening of described load motor and hydraulic filter, be provided with overflow branch road, relief valve be installed on described overflow branch road and be connected with described the first branch road;
Described unit to be checked comprises main fuel tank, pump discharge integrated package, motor outlet integrated package to be checked and motor oil return integrated package to be checked, described main fuel tank has oil outlet and return opening, described oil outlet is through ball valve, hydraulic axis plug pump is connected with described motor outlet integrated package to be checked with pump discharge integrated package, the oil outlet of described motor outlet integrated package to be checked is connected with motor to be measured, the return opening of described motor to be measured by return line through motor oil return integrated package to be checked, after the filter of high-precision hydraulic oil and motor oil return pipe bundle condenser to be measured series connection, be connected with the return opening of described main fuel tank,
The motor to be checked of the load motor of load unit and unit to be checked is arranged on motor test rig frame, and is connected by coupling, and speed probe is installed on coupling.
2. hydraulic motor test stand according to claim 1, it is characterized in that: described load integrated package assembly comprises that proportional pressure control valve is connected with the rectifier bridge road being comprised of four one-way valves, described proportional pressure control valve is connected with the second branch road, the first interface on described ballast bridge road is connected with described proportional pressure control valve, second, four interfaces on ballast bridge road are connected with load oil hydraulic motor, and the 3rd interface on described ballast bridge road is connected with the hydraulic filter of described the first branch road; Between the first interface on described ballast bridge road and proportional pressure control valve, pressure transducer and temperature transducer are housed.
3. hydraulic motor test stand according to claim 1, it is characterized in that: described motor outlet integrated package to be checked comprises proportional pressure control valve, hydraulic filter, flow transducer and three-position four-way hydraulic solenoid valve, the A of described three-position four-way hydraulic solenoid valve, B mouth are connected with motor to be measured respectively, the P mouth of described three-position four-way hydraulic solenoid valve is connected with pump discharge integrated package through described flow transducer, and the T mouth of described three-position four-way hydraulic solenoid valve is connected with described return line through hydraulic filter, proportional pressure control valve.
4. hydraulic motor test stand according to claim 1, it is characterized in that: described pump discharge integrated package comprises one-way valve, hydraulic filter, proportional pressure control valve and accumulator, described one-way valve and hydraulic filter series connection, described check valve inlet connecting fluid last item plug pump, the outlet of described hydraulic filter is connected with described motor outlet integrated package to be checked, on the pipeline that described hydraulic filter is connected with described motor outlet integrated package to be checked, pressure transducer and accumulator are installed, the outlet of described hydraulic filter is provided with the second overflow branch road, on the second overflow branch road, proportion of installation relief valve is connected with return line.
5. hydraulic motor test stand according to claim 1, it is characterized in that: described motor oil return integrated package to be checked comprises that hydraulic filter, proportional pressure control valve and flow transducer are composed in series successively, are separately installed with temperature transducer and pressure transducer at the two ends of described proportional pressure control valve.
6. hydraulic motor test stand according to claim 3, is characterized in that: on the pipeline of the A of described three-position four-way hydraulic solenoid valve, B mouth, pressure transducer and temperature transducer are all installed.
7. hydraulic motor test stand according to claim 3, is characterized in that: the P mouth place of described three-position four-way hydraulic solenoid valve is provided with exhaust-valve.
8. hydraulic motor test stand according to claim 1, is characterized in that: the shell side cooling liquid inlet of described motor oil return pipe bundle condenser to be measured is provided with two two logical electromagnetic water valves.
9. hydraulic motor test stand according to claim 1, is characterized in that: on described load fuel tank and main fuel tank, temperature transducer is all installed, the oil outlet place of described load fuel tank and main fuel tank is all provided with hydraulic filter.
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| CN201410307125.9A CN104074839B (en) | 2014-06-30 | 2014-06-30 | A kind of hydraulic motor test stand |
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| CN201410307125.9A CN104074839B (en) | 2014-06-30 | 2014-06-30 | A kind of hydraulic motor test stand |
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| CN104074839B CN104074839B (en) | 2016-06-22 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454793A (en) * | 2014-12-19 | 2015-03-25 | 上海电气液压气动有限公司 | Comprehensive testing system for hydraulic product pump |
| CN104500504A (en) * | 2014-12-19 | 2015-04-08 | 上海电气液压气动有限公司 | Forward-reverse rotation load sensitivity test system for closed type hydraulic pumps |
| CN104500380A (en) * | 2014-12-19 | 2015-04-08 | 上海电气液压气动有限公司 | Forward-reverse rotation comprehensive test system for closed type hydraulic pumps |
| CN104514761A (en) * | 2014-12-19 | 2015-04-15 | 长安大学 | Hydraulic pump and motor test bed capable of recycling test energy consumption |
| CN104635157A (en) * | 2015-01-20 | 2015-05-20 | 山东拓博节能科技有限公司 | Test board of low-revolution-speed large-torque motor |
| CN105065371A (en) * | 2015-08-11 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Hydraulic energy system testing apparatus |
| CN105257630A (en) * | 2015-11-28 | 2016-01-20 | 南通华夏飞机工程技术股份有限公司 | Hydraulic test vehicle with overheat protection function |
| CN105275922A (en) * | 2015-11-28 | 2016-01-27 | 南通华夏飞机工程技术股份有限公司 | Hydraulic test vehicle |
| CN105275921A (en) * | 2015-11-28 | 2016-01-27 | 南通华夏飞机工程技术股份有限公司 | Aviation hydraulic test system |
| CN106015177A (en) * | 2016-08-05 | 2016-10-12 | 芜湖中意液压科技股份有限责任公司 | Durability test system with power recovery function for oscillating motor |
| CN106438581A (en) * | 2016-11-30 | 2017-02-22 | 宿州市金河矿山设备有限公司 | Hydraulic motor detection experimental system |
| CN109099028A (en) * | 2018-09-05 | 2018-12-28 | 芜湖中意液压科技股份有限责任公司 | A kind of tilt cylinder motor pressure detection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104500380B (en) * | 2014-12-19 | 2016-12-07 | 上海电气液压气动有限公司 | Closed type hydraulic pump rotating comprehensive test system |
| CN104500504A (en) * | 2014-12-19 | 2015-04-08 | 上海电气液压气动有限公司 | Forward-reverse rotation load sensitivity test system for closed type hydraulic pumps |
| CN104500380A (en) * | 2014-12-19 | 2015-04-08 | 上海电气液压气动有限公司 | Forward-reverse rotation comprehensive test system for closed type hydraulic pumps |
| CN104514761A (en) * | 2014-12-19 | 2015-04-15 | 长安大学 | Hydraulic pump and motor test bed capable of recycling test energy consumption |
| CN104454793A (en) * | 2014-12-19 | 2015-03-25 | 上海电气液压气动有限公司 | Comprehensive testing system for hydraulic product pump |
| CN104514761B (en) * | 2014-12-19 | 2017-03-15 | 长安大学 | A kind of hydraulic pump that can be consumed energy with recovery test and motor test rig |
| CN104635157A (en) * | 2015-01-20 | 2015-05-20 | 山东拓博节能科技有限公司 | Test board of low-revolution-speed large-torque motor |
| CN104635157B (en) * | 2015-01-20 | 2017-06-30 | 山东拓博节能科技有限公司 | A kind of low rotation speed large torque electromechanical testing platform |
| CN105065371A (en) * | 2015-08-11 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Hydraulic energy system testing apparatus |
| CN105275922A (en) * | 2015-11-28 | 2016-01-27 | 南通华夏飞机工程技术股份有限公司 | Hydraulic test vehicle |
| CN105275921A (en) * | 2015-11-28 | 2016-01-27 | 南通华夏飞机工程技术股份有限公司 | Aviation hydraulic test system |
| CN105257630A (en) * | 2015-11-28 | 2016-01-20 | 南通华夏飞机工程技术股份有限公司 | Hydraulic test vehicle with overheat protection function |
| CN106015177A (en) * | 2016-08-05 | 2016-10-12 | 芜湖中意液压科技股份有限责任公司 | Durability test system with power recovery function for oscillating motor |
| CN106015177B (en) * | 2016-08-05 | 2018-03-13 | 芜湖中意液压科技股份有限责任公司 | Power Recovery tilt cylinder motor durability testing system |
| CN106438581A (en) * | 2016-11-30 | 2017-02-22 | 宿州市金河矿山设备有限公司 | Hydraulic motor detection experimental system |
| CN109099028A (en) * | 2018-09-05 | 2018-12-28 | 芜湖中意液压科技股份有限责任公司 | A kind of tilt cylinder motor pressure detection system |
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Denomination of invention: Test bed for hydraulic motor Effective date of registration: 20190929 Granted publication date: 20160622 Pledgee: Nanjing Bank Co., Ltd. Chengnan Branch Pledgor: Nanjing Chuan Bei high-speed drive Machinery Co., Ltd. Registration number: Y2019320000172 |
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