CN110454466B - Hydrostatic drive system comprehensive performance experiment table and method - Google Patents
Hydrostatic drive system comprehensive performance experiment table and method Download PDFInfo
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- CN110454466B CN110454466B CN201910788880.6A CN201910788880A CN110454466B CN 110454466 B CN110454466 B CN 110454466B CN 201910788880 A CN201910788880 A CN 201910788880A CN 110454466 B CN110454466 B CN 110454466B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
Abstract
The invention relates to a hydrostatic drive system comprehensive performance test bench and a method, wherein a power system, a hydraulic transmission mechanism and a dynamometer of the test bench are fixedly connected on a base platform of a test bench system in sequence, the power system is connected with the hydraulic mechanism, and the hydraulic mechanism is connected with the dynamometer through transmission shafts respectively, and the power system, the hydraulic transmission mechanism and the dynamometer are installed on the same axis; a hydraulic oil inlet and a hydraulic oil outlet in the hydraulic transmission mechanism are respectively connected with an external oil supply system through an oil return hose and connected with an external cooling system through an oil outlet hose, and the external cooling system is connected with the external oil supply system through a hose to form an oil supply circulation loop. The invention has the advantages of simple and compact structure, safety, reliability and simple and convenient operation. The performance parameters of the hydraulic transmission mechanism can be respectively tested, and the hydraulic transmission mechanism has the advantages of reliable test, easy manufacture, convenient maintenance and low cost; the whole test bed can be separately installed, and flexible installation and disassembly functions are realized.
Description
Technical Field
The invention relates to a hydraulic transmission test platform, in particular to a hydraulic transmission test platform for testing a hydraulic power system.
Background
The hydraulic test bed is mainly used for performance detection tests of hydraulic pumps, hydraulic motors, hydraulic valves and the like, and can test hydraulic elements of various specifications. The hydraulic pump can convert energy, and can convert mechanical energy of the engine into pressure energy of oil, so that oil pressure in the hydraulic device drives the hydraulic device to rotate for driving an external load. In order to comprehensively know the performance of the hydraulic pump, the working efficiency of the hydraulic pump is included, and the change of the performance of the hydraulic pump, such as hydraulic pressure, flow rate, rotating speed and the like, is measured. The hydrostatic drive system comprehensive performance test bench needs to be designed, is simpler and more convenient than other test benches, and manpower and financial resources required for building the test bench can be reduced.
Disclosure of Invention
In view of the above-mentioned defects in the prior art, the present invention provides a hydrostatic drive system comprehensive performance test bed and a method thereof, which can realize flexible mounting and dismounting functions of the hydraulic test bed, and can simply, conveniently and efficiently test the performance of a hydraulic transmission mechanism, so as to solve the above-mentioned problems.
In order to achieve the purpose, the technical scheme of the invention is as follows: a hydrostatic drive system comprehensive performance test bench comprises a power system, a test bench system, a hydraulic transmission mechanism and a dynamometer, wherein the power system, the hydraulic transmission mechanism and the dynamometer are sequentially and fixedly connected onto a base platform of the test bench system, the power system is connected with the hydraulic mechanism, the hydraulic mechanism is connected with the dynamometer through transmission shafts, and the power system, the hydraulic transmission mechanism and the dynamometer are installed on the same axis; a hydraulic oil input port and a hydraulic oil output port in the hydraulic transmission mechanism are respectively connected with an external oil supply system through an oil return hose, the external cooling system is connected with the external oil supply system through an oil outlet hose, and the external cooling system is connected with the external oil supply system through a hose to form an oil supply circulation loop.
Further, the power system is powered by an engine or a motor, a flywheel of the engine is connected with an input shaft of the hydraulic transmission mechanism through a clutch and a transmission shaft, and torque are input into the hydraulic transmission mechanism.
Further, the hydraulic transmission mechanism adopts a hydraulic pump or a hydraulic motor.
Further, the external oil supply system and the external cooling system are connected into a whole.
Furthermore, the external cooling system controls the cooling water flow in the oil cooler through the power water pump, and the water channel is provided with the water temperature sensor, the water radiator and the speed-adjustable cooling fan, so that the engine oil temperature in the hydraulic transmission mechanism can be controlled, and the working efficiency and the heat dissipation loss of the hydraulic transmission mechanism at different engine oil temperatures can be tested.
Furthermore, the hydrostatic drive system comprehensive performance experiment table is also provided with a visual online data display system, and can display the engine speed, the power input value and the power output value of the hydraulic transmission mechanism, the efficiency of the hydraulic transmission mechanism and the temperature information of hydraulic oil in the power system in real time.
A hydrostatic drive system comprehensive performance test method adopts a hydrostatic drive system comprehensive performance experiment table, firstly, the engine performance in a power system is tested, the power and economic characteristics of the engine under different working conditions are measured and stored, and the opening of an engine throttle or the opening of a throttle valve is recorded; then, the performance of the hydraulic transmission mechanism was tested: and accessing a hydraulic pump or a hydraulic motor, obtaining engine power output under different working conditions and input power of the hydraulic transmission mechanism by controlling the opening of an engine throttle or the opening of a throttle, measuring the output power of the hydraulic transmission mechanism by a dynamometer, and calculating the working efficiency and power loss of the hydraulic transmission mechanism.
The invention has the following technical and beneficial effects:
the hydraulic test bed mainly comprises an engine (used for providing torque and torsion for a hydraulic mechanism), a dynamometer (used for testing power), a hydraulic transmission mechanism, a cooling mechanism and the like. The test bed has the advantages of simple structure, simple operation, higher efficiency, accurate experimental data and easy acquisition of accurate data. The input power of the hydraulic system is obtained by looking up a table through the control system, the output power of the hydraulic system is obtained through the dynamometer, and the working efficiency and the power loss of the hydraulic testing system are obtained through calculation. The system is provided with a visual online data display system, and can display equipment information in real time. The test bed can realize simple, convenient and effective measurement on the performance of the hydraulic mechanism. The installation is simple when using, and it is convenient to dismantle when not using, and different cooling efficiency is conveniently set for to external cooling system. The test bed can replace different hydraulic transmission mechanisms at any time so as to detect the performance of the test bed.
The engine of the power system is adopted to provide fixed rotating speed and torque, fixed power is provided for the hydraulic pump, the dynamic property and the power of the engine can be obtained only by one-time measurement, repeated measurement is not needed when different hydraulic transmission mechanisms are measured, and only the hydraulic transmission mechanisms need to be replaced for measurement. The invention has the advantages of simple and compact structure, safety, reliability and simple and convenient operation. The position of the hydraulic transmission mechanism on the base frame of the experiment table can be adjusted, the hydraulic transmission mechanism can adapt to hydraulic transmission mechanisms of different models, the applicability of the hydraulic experiment table is improved, the performance parameters of the hydraulic transmission mechanism can be respectively tested, and the hydraulic experiment table has the advantages of reliability in testing, easiness in manufacturing, convenience in maintenance and low cost. The whole test bed is separately installed, and flexible installation and disassembly functions are realized.
Drawings
FIG. 1 is a schematic view of the overall configuration of the hydrostatic drive system performance test bench of the present invention;
FIG. 2 is a schematic view of the hydrostatic drive system combination property bench of the present invention;
FIG. 3 is a block diagram of the hydrostatic drive system combination property bench of the present invention.
Detailed Description
The invention is further illustrated by the following structural drawings and examples. The described embodiments are only some, but not all embodiments of the invention.
As shown in FIGS. 1, 2 and 3, the hydrostatic drive system comprehensive performance test bench comprises a power system 2, a test bench system 1, a hydraulic transmission mechanism 3 and a dynamometer 4.
The test bed system 1 comprises a hydraulic test bed base 1-1, an engine support 7, a clutch support 8 and a hydraulic pump support 9. Three supports are arranged on the hydraulic test bed base 1-1, the engine support 7 is arranged on the leftmost side of the hydraulic test bed base 1-1, the clutch support 8 is arranged on the right side of the engine support 7, and the hydraulic pump support 9 is arranged on the right side of the clutch support 8. The hydraulic test bed base 1-1 is sequentially provided with an engine 2-1 of a power system, a clutch and a hydraulic pump 3-1 of a hydraulic transmission mechanism through three brackets. The dynamometer 4 is installed on the rightmost side of the hydraulic test bed base 1-1, and the supports are fixed on the hydraulic test bed base according to a specified distance through bolts. The engine 2-1 is installed on an engine support 7 and is fixed by bolts, the clutch is fixed on a clutch support 8 by bolts and is connected with the engine, a first transmission shaft 5 is connected with the clutch, a hydraulic pump 3-1 is installed on a hydraulic pump support 9 and is fixed by bolts and is connected with the first transmission shaft 5, an oil return hose 11 and an oil outlet hose 10 are respectively connected with a hydraulic oil input port and an oil outlet port on the hydraulic pump 3-1, the oil return hose 11 is connected with an external oil supply system, the oil outlet hose 10 is connected with the external cooling system firstly, and then the cooling system is connected with the external oil supply system by the hoses to form an oil supply circulation. The second transmission shaft 6 is connected with the hydraulic pump 3-1 and the dynamometer 4, the second transmission shaft 6 is connected with the dynamometer 4 through a flexible coupling 12, and the engine 2-1, the hydraulic pump 3-1 and the dynamometer 4 are on the same axis.
The power system 2 is powered by an engine 2-1 or by a motor, a flywheel of the engine 2-1 is connected with an input shaft of the hydraulic transmission mechanism 3 through a clutch and a transmission shaft I5, and torque are input into the hydraulic transmission mechanism 3. The hydraulic transmission mechanism 3 adopts a hydraulic pump 3-1 or a hydraulic motor. The external oil supply system and the external cooling system are connected into a whole. The external cooling system controls the cooling water flow in the oil cooler through the power water pump, and the water channel is provided with the water temperature sensor, the water radiator and the speed-adjustable cooling fan, so that the engine oil temperature in the hydraulic transmission mechanism can be controlled, and the working efficiency and the heat dissipation loss of the hydraulic transmission mechanism at different engine oil temperatures can be tested. The hydrostatic drive system comprehensive performance experiment table is also provided with a visual online data display system, and can display the engine rotating speed, the power input value and the power output value of the hydraulic transmission mechanism, the efficiency of the hydraulic transmission mechanism and the temperature information of hydraulic oil in the power system in real time.
A hydrostatic drive system comprehensive performance test method adopts a hydrostatic drive system comprehensive performance experiment table, firstly, the engine performance in a power system is tested, the power and economic characteristics of the engine under different working conditions are measured and stored, and the opening of an engine throttle or the opening of a throttle valve is recorded; then, the performance of the hydraulic transmission mechanism was tested: and accessing a hydraulic pump or a hydraulic motor, obtaining engine power output under different working conditions and input power of the hydraulic transmission mechanism by controlling the opening of an engine throttle or the opening of a throttle, measuring the output power of the hydraulic transmission mechanism by a dynamometer, and calculating the working efficiency and power loss of the hydraulic transmission mechanism.
The hydraulic pump test process:
(1) firstly, the performance of measuring power, rotating speed, torque and the like of the existing engine
(2) The tested pieces such as a hydraulic pump, a hydraulic motor and the like to be tested are arranged on the bracket,
(3) connecting the tested piece to the engine and dynamometer
(4) The oil return pipe and the oil delivery pipe are connected on the hydraulic transmission mechanism
(5) The oil return pipe is connected to the cooling system and then to the oil tank
(6) Firstly, the hydraulic transmission mechanism is supplied with oil, and after the oil supply is finished
(7) Starting the engine, waiting, starting the hydraulic test bench, and measuring
(8) Dynamometer for measuring performance of hydraulic transmission mechanism
The engine works to drive the transmission shaft to rotate, the transmission shaft drives the input shaft of the hydraulic pump to rotate, hydraulic oil is continuously sucked into the hydraulic pump, the input shaft rotates to pressurize the hydraulic oil to a certain degree, the hydraulic oil pushes the output shaft to rotate, the rotating speed and the torque are output, and the dynamometer tests the performance of the hydraulic pump. Meanwhile, the cooling system cools the hydraulic pump, and the hydraulic oil is prevented from being overhigh in temperature and stopping working. The control of the temperature of the engine oil of the hydraulic system is realized, and the working efficiency and the heat dissipation loss of the hydraulic system at different engine oil temperatures can be tested.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are included in the scope of the present invention.
Claims (2)
1. The utility model provides a quiet hydraulic drive system comprehensive properties laboratory bench, includes driving system, test bench system, hydraulic transmission mechanism, dynamometer machine, its characterized in that: the power system, the hydraulic transmission mechanism and the dynamometer are sequentially and fixedly connected to a base platform of the test bench system, the power system and the hydraulic transmission mechanism and the dynamometer are respectively connected through transmission shafts, and the power system, the hydraulic transmission mechanism and the dynamometer are installed on the same axis; a hydraulic oil inlet and a hydraulic oil outlet in the hydraulic transmission mechanism are respectively connected with an external oil supply system through an oil return hose and connected with an external cooling system through an oil outlet hose, and the external cooling system is connected with the external oil supply system through a hose to form an oil supply circulation loop; the power system is powered by an engine, a flywheel of the engine is connected with an input shaft of the hydraulic transmission mechanism through a clutch and a transmission shaft, and torque are input to the hydraulic transmission mechanism; the hydraulic transmission mechanism adopts a hydraulic pump or a hydraulic motor; the external oil supply system and the external cooling system are connected into a whole; the external cooling system controls the cooling water flow in the oil cooler through the power water pump, and the water channel is provided with the water temperature sensor, the water radiator and the speed-adjustable cooling fan, so that the temperature of the engine oil in the hydraulic transmission mechanism can be controlled, and the working efficiency and the heat dissipation loss of the hydraulic transmission mechanism at different engine oil temperatures can be tested; the hydrostatic drive system comprehensive performance experiment table is also provided with a visual online data display system, and can display the engine rotating speed, the power input value and the power output value of the hydraulic transmission mechanism, the efficiency of the hydraulic transmission mechanism and the temperature information of hydraulic oil in the power system in real time.
2. A comprehensive performance testing method of a hydrostatic driving system adopts the comprehensive performance testing platform of the hydrostatic driving system as claimed in claim 1, and is characterized in that: firstly, testing the performance of an engine in a power system, measuring and storing the power and economic characteristics of the engine under different working conditions, and simultaneously recording the opening of an engine throttle or the opening of a throttle valve; then, the performance of the hydraulic transmission mechanism was tested: and accessing a hydraulic pump or a hydraulic motor, obtaining engine power output under different working conditions and input power of the hydraulic transmission mechanism by controlling the opening of an engine throttle or the opening of a throttle, measuring the output power of the hydraulic transmission mechanism by a dynamometer, and calculating the working efficiency and power loss of the hydraulic transmission mechanism.
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| JP2004286609A (en) * | 2003-03-24 | 2004-10-14 | Shinko Electric Co Ltd | Testing device for transmission |
| CN201016854Y (en) * | 2007-02-12 | 2008-02-06 | 潍柴动力股份有限公司 | Engine rear power take-off test equipment |
| CN201757707U (en) * | 2010-07-16 | 2011-03-09 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Parallel-connection type hybrid power wheel loader rack testing mechanism |
| CN102393730B (en) * | 2011-10-14 | 2013-04-10 | 清华大学 | Parallel hybrid vehicle descending safety auxiliary control test stand and test method thereof |
| CN103759946A (en) * | 2013-12-30 | 2014-04-30 | 天津雷沃动力有限公司 | Testing device for testing PTO output capacity of engine |
| CN106959212B (en) * | 2017-02-28 | 2019-10-01 | 广西康明斯工业动力有限公司 | Engine dynamic comprehensive consumption run platform test method |
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