CN214888100U - Comprehensive test bed for hydraulic elements - Google Patents
Comprehensive test bed for hydraulic elements Download PDFInfo
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- CN214888100U CN214888100U CN202120644509.5U CN202120644509U CN214888100U CN 214888100 U CN214888100 U CN 214888100U CN 202120644509 U CN202120644509 U CN 202120644509U CN 214888100 U CN214888100 U CN 214888100U
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Abstract
The utility model discloses a hydraulic component integrated test platform, its characterized in that: the hydraulic power unit comprises a first variable pump, a first electromagnetic proportional overflow valve and a throttle valve which are connected in parallel, wherein one end of the first variable pump is connected to an inlet of an oil supply oil way, and the other end of the first variable pump is connected to an inlet of an oil way of the test unit; a pressure gauge, a pressure sensor, a one-way valve, a fine filter and an energy accumulator are sequentially arranged between the power unit and each test unit; the test unit comprises a hydraulic pump test unit, a hydraulic valve test unit, a hydraulic motor test unit and a hydraulic cylinder test unit, all the test units are connected to the hydraulic power unit in parallel, stop valves are arranged on all the test units, and all the test functions are realized by controlling the on and off of the stop valves. The utility model discloses divide into four test unit, regard as the main control unit with programmable controller to reach the purpose of practicing thrift the cost, improving its efficiency of software testing.
Description
Technical Field
The utility model relates to a function hydraulic component test bench that various hydraulic components such as valve, pump, hydraulic motor, pneumatic cylinder are many.
Background
The existing test bed on the market can only test partial hydraulic components, and the existing hydraulic component company produces more hydraulic components in types, and tests the hydraulic components due to the fact that the hydraulic components need to be taken out of the market.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to above-mentioned prior art exists provides a hydraulic component combined test platform suitable for multiple hydraulic component
The utility model discloses the technical scheme who adopts does: a hydraulic component integrated test platform which is characterized in that: the hydraulic power unit comprises a first variable pump, a first electromagnetic proportional overflow valve and a throttle valve which are connected in parallel, wherein one end of the first variable pump is connected to an inlet of an oil supply oil way, and the other end of the first variable pump is connected to an inlet of an oil way of the test unit; a pressure gauge, a pressure sensor, a one-way valve, a fine filter and an energy accumulator are sequentially arranged between the power unit and each test unit; the test unit comprises a hydraulic pump test unit, a hydraulic valve test unit, a hydraulic motor test unit and a hydraulic cylinder test unit, all the test units are connected to the hydraulic power unit in parallel, stop valves are arranged on all the test units, and all the test functions are realized by controlling the on and off of the stop valves.
According to the technical scheme, the power unit is internally provided with a programmable controller for controlling the hydraulic elements in the test bed.
According to the technical scheme, the hydraulic pump testing unit, the hydraulic motor testing unit and the hydraulic cylinder testing unit share the first electromagnetic directional valve.
According to the technical scheme, the hydraulic pump testing unit comprises a main unit and an auxiliary unit, wherein the main unit comprises a hydraulic motor which is connected with the power unit in series and provides power for the testing pump; the auxiliary unit is independently connected to an oil path and sequentially comprises a coarse filter, a second electromagnetic directional valve connected to an oil inlet pipe and an oil return pipeline, pressure sensors and pressure gauges arranged on two sides of the test pump in pairs, and a second electromagnetic proportional overflow valve and a first flow sensor arranged on the oil return pipeline; the hydraulic motor is connected with the pump to be tested through a first torque tachometer, and the stop valves are arranged on two sides of the hydraulic motor of the main unit.
According to the technical scheme, the remote control port of the second electromagnetic proportional overflow valve is provided with a two-position two-way electromagnetic directional valve.
According to the technical scheme, the hydraulic valve testing unit comprises a third electromagnetic proportional overflow valve and a fourth electromagnetic proportional overflow valve which are mutually connected in parallel and connected to a tested valve, a one-way valve respectively connected with the third electromagnetic proportional overflow valve and the fourth electromagnetic proportional overflow valve in series, pressure sensors and pressure gauges which are arranged on the third electromagnetic proportional overflow valve and the fourth electromagnetic proportional overflow valve in pairs, and a second flow sensor which is positioned on an oil return pipe of the tested valve, wherein the power unit is connected with an oil inlet pipe of the tested valve; the stop valve is positioned on an oil inlet pipeline of the tested valve.
According to the technical scheme, the hydraulic motor testing unit comprises a loading device connected with a tested hydraulic motor, pressure sensors and pressure gauges which are arranged at two ends of the loading device in pairs, and a third flow sensor and a fourth flow sensor which are arranged at two ends of the loading device; the loading device is connected with the tested hydraulic motor through a second torque tachometer, and the stop valve is positioned on the oil inlet pipe and the oil return pipe.
According to the technical scheme, the hydraulic cylinder testing unit comprises a load unit and a tested oil cylinder unit, wherein the load unit is a complete loop and comprises a power assembly for providing power, a load oil cylinder connected with the tested oil cylinder, pressure gauges in pairs positioned on two sides of the load oil cylinder and third electromagnetic reversing valves positioned on an oil inlet pipe and an oil return pipeline; the tested oil cylinder unit comprises pressure sensors, pressure gauges and one-way throttle valves which are positioned at two sides of the tested oil cylinder in pairs; the load oil cylinder is connected with the tested oil cylinder through a quick joint, a dynamometer is arranged on the quick joint, and the stop valves are located on two sides of the load oil cylinder and two sides of the tested oil cylinder.
According to the technical scheme, the power assembly of the hydraulic cylinder testing unit comprises a second variable pump, a fifth electromagnetic proportional overflow valve, a check valve, a pressure sensor and a fine filter, wherein the second variable pump and the fifth electromagnetic proportional overflow valve are connected in parallel, and the check valve, the pressure sensor and the fine filter are connected in series with the first variable pump and the fifth electromagnetic proportional overflow valve; one end of the power assembly is connected with the oil supply circuit, and the other end of the power assembly is connected with the load oil cylinder.
The utility model discloses the beneficial effect who gains does:
the utility model discloses according to the hydraulic pressure schematic diagram, the test bench can divide into four branches, will test switching-over valve, hydraulic pump, pneumatic cylinder, hydraulic motor integration on an equipment, changes original hydraulic component test bench that uses manual control and use traditional relay control to give first place to into and regards as the main control unit with programmable controller to reach the purpose of practicing thrift the cost, improving its efficiency of software testing.
Drawings
FIG. 1 is a hydraulic schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a local hydraulic pressure for testing a hydraulic pump according to the present invention;
FIG. 3 is a schematic diagram of the local hydraulic pressure of the hydraulic valve for testing according to the present invention;
FIG. 4 is a schematic diagram of a partial hydraulic pressure for testing a hydraulic motor according to the present invention;
FIG. 5 is a schematic diagram of the local hydraulic pressure of the hydraulic cylinder according to the present invention;
in the figure: 1. the hydraulic control system comprises a first variable pump, 2, a second variable pump, 3, a hydraulic motor, 4, a second electromagnetic proportional overflow valve, 5, a first electromagnetic proportional overflow valve, 6, a fifth electromagnetic proportional overflow valve, 7, a third electromagnetic proportional overflow valve, 8, a fourth electromagnetic proportional overflow valve, 9, a second electromagnetic directional valve, 10, a first electromagnetic directional valve, 11, a third electromagnetic directional valve, 12, a load cylinder, 13, a one-way throttle valve, 14, a one-way throttle valve, 15-1/2/3/4, a flow sensor, 16-1/2/3/4/5/6/7/8/9, a pressure sensor, 17-1/2/3/4, a one-way valve, 18-1/2/3/5/6/7/8/9/10/11/12 and a pressure gauge, 19. the system comprises a loading device, 20 a dynamometer, 21 a torque tachometer, 22-1/2 a fine filter, 23 a cooling junction, 24-1/2/3 a coarse filter, 25 an energy accumulator, 26 a quick joint, 27 a throttle valve, 28 a two-position two-way electromagnetic reversing valve, 29 a heater and 30 a thermometer; a. b, c, d, e, f, g, h, m, n, o and p-stop valves.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in FIG. 1, the utility model provides a hydraulic component integrated test platform, including hydraulic power unit and a plurality of test unit that are used for testing different hydraulic components. The test unit comprises a hydraulic pump test unit, a hydraulic valve test unit, a hydraulic motor test unit and a hydraulic cylinder test unit, all the test units are connected in parallel to each other on the hydraulic power unit, a stop valve is arranged on each unit, and each test function is realized by controlling the opening and closing of the stop valve; and a programmable controller is arranged in the power unit and used for controlling a hydraulic element in the test bed.
The power unit comprises a first variable pump 1, a first electromagnetic proportional overflow valve 5 and a throttle valve 27 which are connected in parallel, wherein one end of the power unit is connected to the inlet of the oil supply oil path, and the other end of the power unit is connected to the inlet of the oil path of the test unit; a pressure gauge 18-11, a pressure sensor 16-1, a one-way valve 17-1, a fine filter 22-1 and an energy accumulator 25 are sequentially arranged between the power unit and each test unit, and a stop valve h is arranged between the energy accumulator 25 and an oil way. The hydraulic pump test unit, the hydraulic motor test unit and the hydraulic cylinder test unit share the first electromagnetic directional valve 10.
The hydraulic pump test unit comprises a main unit and a secondary unit, wherein the main unit comprises a hydraulic motor 3 which is connected with the power unit in series and provides power for the test pump; the auxiliary unit is independently connected to an oil path and sequentially comprises a coarse filter 24-1, a second electromagnetic directional valve 9 connected to an oil inlet pipe and an oil return pipeline, pressure sensors 16-2/3 and pressure gauges 18-2/3 which are arranged on two sides of the test pump in pairs, and a second electromagnetic proportional overflow valve 4 and a first flow sensor 15-1 which are arranged on the oil return pipeline; the hydraulic motor 3 is connected to the pump under test via a first torque tachometer 21-1, and the shut-off valves a and b are provided on both sides of the hydraulic motor 3 of the main unit. A remote control port of the second electromagnetic proportional overflow valve 4 is provided with a two-position two-way electromagnetic directional valve 28.
The hydraulic valve testing unit comprises a third electromagnetic proportional overflow valve 7 and a fourth electromagnetic proportional overflow valve 8 which are connected in parallel and connected with a tested valve, check valves 17-3/4 respectively connected with the third electromagnetic proportional overflow valve 7 and the fourth electromagnetic proportional overflow valve 8 in series, pressure sensors 16-8/9 and pressure gauges 18-9/10 which are arranged on the third electromagnetic proportional overflow valve and the fourth electromagnetic proportional overflow valve in pairs, and a second flow sensor 15-4 positioned on an oil return pipe of the tested valve, wherein the power unit is connected with an oil inlet pipe of the tested valve; stop valves p and o are positioned on two sides of the third electromagnetic proportional overflow valve and the fourth electromagnetic proportional overflow valve, and the stop valve g is positioned on an oil inlet pipeline of the tested valve.
The hydraulic motor testing unit comprises a loading device 19 connected with a tested hydraulic motor, pressure sensors 16-4/5 and pressure gauges 18-3/4 which are arranged at two ends of the loading device in pairs, and a third flow sensor 15-2 and a fourth flow sensor 15-3 which are arranged at two ends of the loading device; the loading device 19 is connected with the tested hydraulic motor through a second torque tachometer 21-2, and the stop valves c and d are positioned on the oil inlet pipe and the oil return pipe.
The hydraulic cylinder test unit comprises a load unit and a tested oil cylinder unit, wherein the load unit is a complete loop and comprises a power assembly for providing power, a load oil cylinder 12 connected with the tested oil cylinder, pressure gauges 18-7/8 which are arranged on two sides of the load oil cylinder 12 in pairs, and a third electromagnetic reversing valve 11 arranged on an oil inlet pipe and an oil return pipeline. The tested cylinder unit comprises pressure sensors 16-6/7, pressure gauges 18-5/6 and one-way throttle valves 13 and 14 which are arranged on two sides of the tested cylinder in pairs. The load cylinder 12 is connected with the cylinder to be tested through a quick joint 26, and a dynamometer 20 is arranged on the quick joint 26. Stop valves m and n are located on two sides of the load oil cylinder, and stop valves e and f are located on two sides of the tested oil cylinder. The power assembly of the hydraulic cylinder testing unit comprises a second variable pump 2, a fifth electromagnetic proportional overflow valve 6, a check valve 17-2, a pressure sensor 18-12 and a fine filter 22-2, wherein the second variable pump 2 and the fifth electromagnetic proportional overflow valve 6 are connected in parallel with each other; one end of the power assembly is connected with the oil supply circuit, and the other end of the power assembly is connected with the load oil cylinder.
The oil supply path is also provided with a cooling knot 23, a heater 29 and a thermometer 30.
Preferably, the oil inlets of the first variable displacement pump 1 and the second variable displacement pump 2 are not only directly connected with the oil supply path, but also connected with the oil supply path through coarse filters 24-2/3 respectively.
The following method for adjusting the on-off state of the stop valve according to the tested piece to realize the test function is as follows
1. Pump testing
And closing the stop valves c, d, e, f and g to obtain the hydraulic pump test unit, wherein a hydraulic schematic diagram of the hydraulic pump test unit is shown in FIG. 2. The first electromagnetic proportional relief valve 5 is adjusted to be higher than the rated working pressure of the first variable displacement pump 1. And electrifying the second electromagnetic proportional overflow valve 4, starting the motor of the first variable pump 1, and after the stable operation, electrifying a two-position two-way electromagnetic directional valve 28 connected with the remote control port of the second electromagnetic proportional overflow valve 4.
2. Valve testing
And closing the stop valves a, b, c, d, e and f to obtain the hydraulic valve test unit, wherein a hydraulic schematic diagram of the hydraulic valve test unit is shown in FIG. 3. And starting a motor of the first variable pump 1 to enable the pressure of the first electromagnetic proportional overflow valve 5 to be equal to the rated working pressure of the first variable pump 1, adjusting the first variable pump 1 within the flow range allowed by the tested valve, giving different flows through the valve port of the tested valve, and measuring the pressure difference value between the inlet pressure and the outlet pressure of the corresponding valve port.
3. Hydraulic motor testing
Closing the cut-off valves a, b, e, f, g, a hydraulic motor test unit is obtained, the hydraulic schematic of which is shown in fig. 4. During testing, the tested motor is in a no-load working condition, the motor of the first variable pump 1 is started, the first electromagnetic proportional overflow valve 5 is adjusted to be the rated pressure of the system, and after stable operation is achieved, the testing system automatically records input motor flow, inlet pressure and motor rotating speed.
4. Testing of hydraulic cylinders
And closing the stop valves a, b, c, d and g to obtain the hydraulic cylinder testing unit, wherein a hydraulic schematic diagram of the hydraulic cylinder testing unit is shown in FIG. 5. The minimum activation pressure of the cylinder is the amount of force required by the piston to overcome the static friction when the cylinder is unloaded. During measurement, the load oil cylinder 12 should be separated from the working cylinder and kept in a static state, so that the tested hydraulic cylinder is under a no-load working condition, the motor of the first variable pump 1 is started, and pressure oil is introduced into a rodless cavity of the tested hydraulic cylinder. And adjusting a handle of the throttle valve 27 to enable the throttle valve to be in a fully-opened state, adjusting the current of the first electromagnetic proportional overflow valve 5 to enable the inlet pressure of the throttle valve to be the highest pressure of the system, slowly closing the throttle valve 27 to enable the pressure of the system to be gradually increased, observing the change of the state of the tested hydraulic cylinder until the tested hydraulic cylinder starts to act, measuring and recording the oil inlet pressure, and enabling the pressure value of the tested hydraulic cylinder at the moment of generating displacement to be the lowest starting pressure.
The above embodiments are only used for the design idea and features of the present invention, and the purpose is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all the equivalent changes or modifications made according to the concept of the present invention are within the protection scope of the present invention.
Claims (9)
1. A hydraulic component integrated test platform which is characterized in that: the hydraulic power unit comprises a first variable pump, a first electromagnetic proportional overflow valve and a throttle valve which are connected in parallel, wherein one end of the first variable pump is connected to an inlet of an oil supply oil way, and the other end of the first variable pump is connected to an inlet of an oil way of the test unit; a pressure gauge, a pressure sensor, a one-way valve, a fine filter and an energy accumulator are sequentially arranged between the power unit and each test unit; the test unit comprises a hydraulic pump test unit, a hydraulic valve test unit, a hydraulic motor test unit and a hydraulic cylinder test unit, all the test units are connected to the hydraulic power unit in parallel, stop valves are arranged on all the test units, and all the test functions are realized by controlling the on and off of the stop valves.
2. The hydraulic component integrated test stand of claim 1, wherein: and a programmable controller is arranged in the power unit and used for controlling a hydraulic element in the test bed.
3. The hydraulic component integrated test stand according to claim 1 or 2, characterized in that: the hydraulic pump test unit, the hydraulic motor test unit and the hydraulic cylinder test unit share the first electromagnetic directional valve.
4. The hydraulic component integrated test stand of claim 3, wherein: the hydraulic pump testing unit comprises a main unit and a secondary unit, wherein the main unit comprises a hydraulic motor which is connected with the power unit in series and provides power for the testing pump; the auxiliary unit is independently connected to an oil path and sequentially comprises a coarse filter, a second electromagnetic directional valve connected to an oil inlet pipe and an oil return pipeline, pressure sensors and pressure gauges arranged on two sides of the test pump in pairs, and a second electromagnetic proportional overflow valve and a first flow sensor arranged on the oil return pipeline; the hydraulic motor is connected with the pump to be tested through a first torque tachometer, and the stop valves are arranged on two sides of the hydraulic motor of the main unit.
5. The hydraulic component integrated test stand of claim 4, wherein: a remote control port of the second electromagnetic proportional overflow valve is provided with a two-position two-way electromagnetic directional valve.
6. The hydraulic component integrated test stand according to claim 1 or 2, characterized in that: the hydraulic valve testing unit comprises a third electromagnetic proportional overflow valve and a fourth electromagnetic proportional overflow valve which are mutually connected in parallel and connected to a tested valve, a check valve respectively connected with the third electromagnetic proportional overflow valve and the fourth electromagnetic proportional overflow valve in series, pressure sensors and pressure gauges which are arranged on the third electromagnetic proportional overflow valve and the fourth electromagnetic proportional overflow valve in pairs, and a second flow sensor which is positioned on an oil return pipe of the tested valve, wherein the power unit is connected with an oil inlet pipe of the tested valve; the stop valve is positioned on an oil inlet pipeline of the tested valve.
7. The hydraulic component integrated test stand of claim 3, wherein: the hydraulic motor testing unit comprises a loading device connected with a tested hydraulic motor, pressure sensors and pressure gauges which are arranged at two ends of the loading device in pairs, and a third flow sensor and a fourth flow sensor which are arranged at two ends of the loading device; the loading device is connected with the tested hydraulic motor through a second torque tachometer, and the stop valve is positioned on the oil inlet pipe and the oil return pipe.
8. The hydraulic component integrated test stand of claim 3, wherein: the hydraulic cylinder testing unit comprises a load unit and a tested oil cylinder unit, wherein the load unit is a complete loop and comprises a power assembly for providing power, a load oil cylinder connected with the tested oil cylinder, pressure gauges in pairs positioned at two sides of the load oil cylinder and third electromagnetic directional valves positioned on an oil inlet pipe and an oil return pipeline; the tested oil cylinder unit comprises pressure sensors, pressure gauges and one-way throttle valves which are positioned at two sides of the tested oil cylinder in pairs; the load oil cylinder is connected with the tested oil cylinder through a quick joint, a dynamometer is arranged on the quick joint, and the stop valves are located on two sides of the load oil cylinder and two sides of the tested oil cylinder.
9. The hydraulic component integrated test stand of claim 8, wherein: the power assembly of the hydraulic cylinder testing unit comprises a second variable pump, a fifth electromagnetic proportional overflow valve, a check valve, a pressure sensor and a fine filter, wherein the second variable pump and the fifth electromagnetic proportional overflow valve are connected in parallel with each other; one end of the power assembly is connected with the oil supply circuit, and the other end of the power assembly is connected with the load oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120644509.5U CN214888100U (en) | 2021-03-30 | 2021-03-30 | Comprehensive test bed for hydraulic elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120644509.5U CN214888100U (en) | 2021-03-30 | 2021-03-30 | Comprehensive test bed for hydraulic elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214888100U true CN214888100U (en) | 2021-11-26 |
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ID=78871997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120644509.5U Active CN214888100U (en) | 2021-03-30 | 2021-03-30 | Comprehensive test bed for hydraulic elements |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214888100U (en) |
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2021
- 2021-03-30 CN CN202120644509.5U patent/CN214888100U/en active Active
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