A oil pump performance test system

Abstract

The present invention provides an oil pump performance test system, comprising an equipment body, a test device, a control unit, a hydraulic unit, a measuring unit and an oil pump, wherein the test device is arranged on the equipment body, the oil pump is arranged on the test device, the hydraulic unit is connected to the test device and the oil pump respectively, the control unit is electrically connected to the measuring unit, the measuring unit is arranged on the hydraulic unit, and the oil pump is electrically connected to the control unit. The beneficial effects of the present invention are that the data of the oil pump voltage or current is input through a human-machine interface to test the parameters such as the real-time working pressure, flow rate, temperature, and speed of the oil pump, and at the same time, the performance parameters of the oil pump at different pressures and different flow rates can be tested through different output oil channels, and intelligent data exchange, record storage, and oil pump performance testing can be realized, so that the oil pump can meet the requirements of performance.

Description

Technical Field

[0001] The invention belongs to the technical field of oil pump performance detection, and in particular relates to an oil pump performance testing system. Background Art

[0002] As a fuel pump commissioning test equipment, the fuel pump test bench plays an important role in the manufacture and maintenance of fuel pumps. In recent years, with the increasing application of diesel engines and the continuous improvement of fuel pump nozzle technology, fuel pump manufacturers and maintenance industries have higher and higher technical requirements for fuel pump test benches.

[0003] At present, the number of domestic fuel injection pump test bench manufacturers has remained basically stable since the 1980s. According to the speed control method and power transmission method, the test benches currently produced by domestic manufacturers are mainly two types of products: transmission speed change of slip-type clutch and AC inverter speed control. There are only a handful of manufacturers producing mechanical, hydraulic speed control, and DC speed control oil pump test benches, and their output is also quite low.

[0004] The fuel injection pump is a key component in the fuel supply system of the automobile engine. Its function is to provide sufficient fuel pressure and flow to meet the fuel requirements of various working conditions of the engine. The performance of the fuel injection pump directly affects the working performance of the engine, so the fuel delivery performance of the fuel injection pump must be tested. At present, there are many types of electric fuel injection pumps in China, but the performance testing technology is relatively backward, mainly using manual meter reading and vacuum method. The manual detection method has poor measurement accuracy, low efficiency, and low stability, and is not suitable for mass production and testing of electric fuel injection pumps. The disadvantage of the vacuum method is that the fuel injection pump is prone to overheating and damage. Summary of the invention

[0005] In view of the above problems, the problem to be solved by the present invention is to provide an oil pump performance testing system, which is particularly suitable for automobile oil pump performance testing, can precisely control and detect various parameters when the oil pump is working, and automatically analyze and process the data.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an oil pump performance testing system, including an equipment body, a testing device, a control unit, a hydraulic unit, a measuring unit and an oil pump, the testing device is arranged on the equipment body, the oil pump is arranged on the testing device, the hydraulic unit is respectively connected to the testing device and the oil pump, the control unit is electrically connected to the measuring unit, the measuring unit is arranged on the hydraulic unit, and the oil pump is electrically connected to the control unit.

[0007] Specifically, the testing device includes an oil tank, a testing platform, a lifting device, a detection device and a clamping device. The oil tank is arranged on the equipment body, the testing platform is arranged on the oil tank, the lifting device is arranged on one side of the testing platform, the clamping device is arranged on the lifting device, the detection device is arranged on the clamping device, the detection device is electrically connected to the control unit, and the oil pump is connected to the oil tank.

[0008] Specifically, the measuring unit includes a flow sensor, a pressure sensor and a temperature sensor, and the flow sensor, the pressure sensor and the temperature sensor are respectively arranged on the hydraulic unit.

[0009] Specifically, the hydraulic unit includes multiple output circuit pipelines, one end of the multiple output circuit pipelines is respectively connected to the oil pump output port through the oil circuit branch control panel, the other end of the multiple output circuit pipelines is respectively connected to the oil tank, and a hydraulic valve is provided on the output circuit pipeline.

[0010] Furthermore, the hydraulic unit includes a first output circuit branch and a second output circuit branch, and both ends of the first output circuit branch and the second output circuit branch are connected in parallel to the oil discharge port of the oil pump.

[0011] Furthermore, the first output circuit branch includes a first-level oil circuit and a second-level oil circuit in parallel, the output ends of the first-level oil circuit and the second-level oil circuit are connected to the first output circuit branch, the first-level oil circuit and the second-level oil circuit are both provided with switches and flow sensors, and the first output circuit branch is provided with a pressure sensor and an adjustable switch.

[0012] Furthermore, the second output circuit branch includes a third-level oil circuit, a fourth-level oil circuit and a fifth-level oil circuit. The third-level oil circuit, the fourth-level oil circuit and the fifth-level oil circuit are connected in parallel, and the output ends are all connected to the second output circuit branch. The third-level oil circuit is provided with a third switch and a third adjustable switch, the fourth-level oil circuit is provided with a fourth switch, the fifth-level oil circuit is provided with a fifth switch and an oil pressure regulator, and the second output circuit branch is provided with a flow sensor, a pressure sensor and a main switch in sequence.

[0013] Furthermore, the measuring unit also includes a rotation speed sensor and a liquid level sensor. The rotation speed sensor is arranged on the oil pump, and the liquid level sensor is arranged in the oil tank.

[0014] Specifically, the control unit includes a control module and a data display module, and the control module is electrically connected to the data display module.

[0015] Furthermore, the control unit also includes a power supply, which is electrically connected to the motor in the oil pump.

[0016] The advantages and positive effects of the present invention are:

[0017] 1. Due to the adoption of the above technical solution, the oil pump performance test system has a simple structure, is easy to maintain, and has a low production cost. It can simulate the working environment of the oil pump and is convenient for testing the performance of the oil pump;

[0018] 2. The oil pump performance test system can input the oil pump voltage or current data through the human-machine interface to test the oil pump working real-time pressure, flow, temperature, speed and other parameters. At the same time, it can test the performance parameters of the oil pump at different pressures and different flows through different output oil channels, and can realize intelligent data exchange, record and storage, and realize the test of oil pump performance, so that the oil pump can meet the performance requirements;

[0019] 3. The oil pump performance test system simulates the working condition of the oil pump at work. There are multiple output oil channels at the output end of the oil pump. Pressure sensors, temperature sensors and flow sensors are respectively set on different output oil channels. The pressure, temperature and flow parameters of the oil pump under the same voltage can be measured respectively. The pressure, temperature and flow parameters of the oil pump under different voltages can be set respectively. The detailed conditions of the oil pump under different working conditions can be obtained, so that the performance of the oil pump can be best exerted;

[0020] 4. At the same time, a speed sensor is installed on the motor inside the oil pump, which can measure the speed of the oil pump at any time, which is convenient for testing the performance of the oil pump and ensures that the speed of the oil pump meets the performance requirements;

[0021] 5. By controlling the pressure and flow of each branch, the temperature, speed and other parameters of the motor are fed back to the system for real-time recording to realize the simulation test. At the same time, all kinds of working condition fault information can be fully monitored and intelligently processed, which is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0023] Figure 2 is a right side view of an embodiment of the present invention;

[0024] Figure 3 is a top view of an embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of a testing device according to an embodiment of the present invention;

[0026] Figure 5 It is a structural diagram of a hydraulic circuit according to an embodiment of the present invention.

[0027] In the figure:

[0028] 1. Equipment body 2. Test explosion-proof door 3. Human-machine intelligent interface system

[0029] 4. PC industrial control system 5. Electrical control cabinet 6. Hydraulic unit cabinet

[0030] 7. Test platform 8. Test device 9. Lifting system

[0031] 10. Emergency stop button 11. Pause button 12. Start button

[0032] 13. Flow meter 14. Tachometer 15. Temperature meter

[0033] 16. Liquid level gauge 17. Voltage gauge 18. Pressure gauge

[0034] 19. Clamping device 20. Oil pump 21. Switch

[0035] 22. Adjustable switch 23. Oil pressure regulator DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] Figure 1 The schematic diagram of the structure of an embodiment of the present invention is shown, and the structure of this embodiment is specifically shown. This embodiment relates to an oil pump performance test system, which is used to simulate the working environment of the oil pump, test the performance of the oil pump under different environments, control and detect the pressure, flow, temperature, speed and other parameters of the oil pump, and realize automatic detection and automatic analysis of various performances of the oil pump, so that the oil pump can meet the use of different working conditions and give full play to its performance. The relevant current and voltage parameters are set through the human-machine intelligent interface system 3, and the DC switching power supply is driven by the communication board to provide different voltages to the oil pump to control the operation of the oil pump. Various functional sensors (including temperature, pressure, flow, speed) test the working state of the oil pump in real time; by controlling the pressure and flow of each branch, the temperature, speed and other parameters of the motor tested in real time are fed back to the system for real-time recording, so as to realize the simulation test work.

[0038] like Figure 1As shown, the above-mentioned oil pump performance test system includes an equipment body 1, a test device, a control unit, a hydraulic unit, a measuring unit and an oil pump 20. The test device is arranged on the equipment body 1, the oil pump 20 is arranged on the test device, the hydraulic unit is connected to the test device and the oil pump 20 respectively, the control unit is electrically connected to the measuring unit, the measuring unit is arranged on the hydraulic unit, and the oil pump 20 is electrically connected to the control unit. The equipment body 1 is equipped with a test device for installing the oil pump 20, fixing the oil pump 20 on the test device, measuring the installation position information of the oil pump 20, and connecting the oil inlet of the oil pump 20 with the oil tank. The hydraulic unit includes a plurality of oil circuits, the hydraulic unit is connected to the output port of the oil pump 20, and the hydraulic unit is connected to the oil tank to realize the circulation of the oil circuit, so that the oil pump 20 can work normally. At the same time, a measuring unit is arranged on the oil circuit pipeline of the hydraulic unit to measure the parameters such as the pressure, temperature and flow rate of the outlet of the oil pump 20. The control unit is electrically connected to the measuring unit, and the data collected by the measuring unit are stored and analyzed to complete the performance test of the oil pump 20.

[0039] Specifically, Figure 2 and 3 As shown, the above-mentioned equipment body 1 includes a test chamber, in which a test device is installed, and a test explosion-proof door 2 is provided on the test chamber, and the test explosion-proof door 2 is made of a transparent material, such as tempered glass, etc., so that the operator can observe the working state of the oil pump 20 in the test chamber when it is working, and at the same time, it can prevent the pressure relief valve on the oil pump 20 from spraying and splashing when releasing pressure, so as to prevent the operator from being injured. There is a hydraulic unit cabinet 6 at the bottom of the test chamber, which is convenient for the installation of the hydraulic unit. At the same time, the space is fully utilized in the structure, so that the oil pump performance test system is more compact in structure. At the same time, an electrical control cabinet 5 and a human-machine intelligent interface system 3 are provided on the upper part of the equipment body 1. The electrical control cabinet 5 is convenient for the installation of the control unit, and at the same time, the display screen in the human-machine intelligent interface system 3 can display various parameter information of the oil pump 20 when it is working. In addition, an emergency stop button 10, a pause button 11 and a start button 12 are installed on the equipment body 1. The emergency stop button 10, the pause button 11 and the start button 12 are electrically connected to the control unit respectively, and their operations are controlled by the control unit. At the same time, a voltmeter 17, an ammeter, a thermometer 15, a tachometer 14, a liquid level meter 16 and a pressure gauge 18 are installed on the equipment body 1, and the voltmeter 17, the ammeter, the thermometer 15, the tachometer 14, the liquid level meter 16 and the pressure gauge 18 are electrically connected to the measuring unit respectively, and the values ​​of various parameters are displayed at all times, so that the operator can always know the performance parameters of the oil pump 20 and it is convenient to set the parameters when the oil pump 20 is subjected to performance testing.

[0040] like Figure 4As shown, the above-mentioned test device includes an oil tank, a test platform 7, a clamping device 19, a test device 8 and a lifting system 9. The test platform 7 is fixedly installed in the oil tank, the clamping device 19 is slidably installed on the lifting system 9, the lifting system 9 is fixedly installed in the oil tank, and the lifting system 9 is arranged on one side of the test platform 7, so that the clamping device 8 is located directly above the test platform 7. The oil pump 20 is placed on the test platform 7, and the clamping device 8 clamps and fixes the oil pump 20. The clamping device 19 can move up and down on the lifting system 9. When the clamping device 19 is at the upper part of the lifting system 9, the oil pump 20 is placed on the test platform 7, and the clamping device 19 descends to contact the oil pump 20 to clamp and fix the oil pump. Here, the lifting system 9 can be a pneumatic track, a hydraulic track, or other lifting devices. Make a selection based on actual needs; the clamping device 19 is a clamping chuck, which clamps and fixes the oil pump 20. The clamping chuck can be mechanical, hydraulic, pneumatic, or other types, which can be selected based on actual needs. At the same time, the shape of the clamp of the clamping chuck is adapted to the shape of the oil pump, and the chuck clamp can be replaced, which is convenient for the clamping chuck to clamp different types of oil pumps 20; the testing device 8 is installed on the clamping device 19, which is used to detect the position of the oil pump 20 installed on the test platform 7, detect the position parameters of the oil pump 20, and transmit the detection results to the control unit, so that the control unit can control the sequence of actions of the entire system. Here, the testing device is a position sensor, and it can also be other sensors for detecting position, which can be selected based on actual needs.

[0041] After the oil pump 20 is clamped and fixed, the input and output oil pipelines of the oil pump 20 are connected with quick connectors, and the output oil pipeline of the oil pump 20 is connected to the hydraulic unit. At the same time, the power supply is electrically connected to the internal motor of the oil pump 20. Here, the power supply is preferably a high-precision switching power supply, which can display voltage and current, and can set voltage and current for the oil pump 20, so as to control the voltage and current supplied to the oil pump 20 and test the performance parameters of the oil pump 20 under different voltages. At the same time, the position sensor on the clamping device 19 is electrically connected to the control unit. Hydraulic oil is filled in the oil tank. The way in which the hydraulic oil enters the oil pump 20 is selected according to the type of the oil pump 20. The fuel pump can be directly immersed in the hydraulic oil in the oil tank, and the engine oil pump can be connected to the oil tank through the oil pipeline. The selection is made according to actual needs. A liquid level sensor is installed in the oil tank, and the sensor is electrically connected to the control unit. The control unit is connected to the liquid level gauge 16, and is used to measure the hydraulic oil in the oil tank and monitor the liquid level of the hydraulic oil at all times, so that the oil pump 20 can be completely immersed in the hydraulic oil, and the operation of the oil pump 20 will not be affected by the small amount of hydraulic oil, resulting in inaccurate performance test results of the oil pump 20.

[0042] The above-mentioned hydraulic unit includes a plurality of output oil circuits, and the output oil circuit of the oil pump is connected to the oil tank, so that the oil pump 20, the liquid level unit and the oil tank form a complete circuit. The oil suction port of the oil pump 20 is connected to the oil tank, and the oil is sucked from the oil tank, and the hydraulic oil in the oil pump is discharged from the oil discharge port of the oil pump after the operation of the oil pump 20. The discharged hydraulic oil enters the oil tank through the output oil pipeline of the hydraulic unit to complete the circulation of the hydraulic oil. At the same time, a measuring unit is set on each output oil pipeline of the hydraulic unit to measure the pressure, temperature and flow parameters of the hydraulic oil on the output oil pipeline, and then the outlet pressure, flow and temperature of the oil pump when working are measured, and the performance parameters of the oil pump 20 are tested. Here, the oil discharge port of the oil pump 20 is connected to the hydraulic unit through the oil branch control panel, so that the oil pump has multiple output oil pipelines, and the pressure, flow rate and temperature of the oil pump can be measured respectively, which will not affect each other's measurement results, and a single parameter measurement of the performance parameters of the oil pump is performed, so that the performance parameter measurement results of the oil pump are more accurate.

[0043] The above-mentioned measuring unit is installed on the output circuit pipeline of the hydraulic unit, such as Figure 5 As shown, it is used to control the opening and closing of each output circuit pipeline and adjust the pressure and flow on each output circuit pipeline. The measuring unit includes a switch 21, an adjustable switch 22, an oil pressure regulator 23, a flow sensor, a pressure sensor and a temperature sensor. The switch 21 in this embodiment is a common switch, preferably a hydraulic switch, which can be a one-way valve, an electromagnetic reversing valve, or other hydraulic valves, which can be selected according to actual needs and can open and close the output circuit pipeline; the adjustable switch 22 is used to adjust the flow of hydraulic oil on the output circuit pipeline, which is preferably a flow valve, a throttle valve, or other hydraulic valves, which can be selected according to actual needs, and can adjust the flow of hydraulic oil in the output circuit pipeline, thereby changing the pressure of hydraulic oil in the output circuit pipeline; the oil pressure regulator 23 is used to adjust the pressure of hydraulic oil in the output circuit pipeline, which is a commercially available product and is selected according to actual needs; the flow sensor is used to measure the flow of hydraulic oil in the output circuit pipeline, the pressure sensor is used to measure the pressure of hydraulic oil in the output circuit pipeline, and the temperature sensor is used to measure the temperature of hydraulic oil in the output circuit pipeline. The flow sensor, pressure sensor and temperature sensor are all commercially available products and are selected according to actual needs.

[0044] Preferably, the hydraulic unit in this embodiment includes a first output circuit branch and a second output circuit branch, the input ends of the first output circuit branch and the second output circuit branch are both connected to the oil discharge port of the oil pump 20, and the two branches are connected in parallel with the oil pump 20. Among them, the first-level output oil circuit loop and the second-level output oil circuit loop are connected in parallel on the first output circuit branch, the output ends of the first-level output oil circuit loop and the second-level output oil circuit loop are connected to the main oil circuit of the first output circuit branch, the switch 21 and the flow sensor are sequentially arranged from the input end to the output end on the first-level output oil circuit loop, the switch 21 and the flow sensor are sequentially arranged from the input end to the output end on the second-level output oil circuit loop, and the pressure sensor and the adjustable switch are sequentially arranged on the first output circuit branch along the flow direction of the hydraulic oil. When the switch on the second-stage output oil circuit is closed, only the first-stage output oil circuit is connected to the first output circuit branch, and the flow and pressure of the oil circuit can be controlled and measured by adjusting the adjustable switch on the first output circuit branch; when the switches on the first-stage output oil circuit and the second-stage output oil circuit are turned on, the flow of the two output oil circuits can be measured by adjusting the adjustable switch on the first output circuit branch, and the total pressure on the first output circuit branch can be measured at the same time. The flow of the two output oil circuits and the total pressure of the first output circuit branch can be adjusted by adjusting the adjustable switch to simulate different working conditions.

[0045] Furthermore, a third-level output oil circuit loop, a fourth-level output oil circuit loop and a fifth-level output oil circuit loop are connected in parallel on the second output circuit branch, and the output ends of the three output oil circuit loops are connected to the second output circuit branch. On the third-level output oil circuit loop, switches and adjustable switches 22 are sequentially arranged along the flow direction of the hydraulic oil, on the fourth-level output oil circuit loop, switches and oil pressure regulators 23 are sequentially arranged along the flow direction of the hydraulic oil on the fifth-level output oil circuit loop, and on the second output circuit branch, flow sensors, pressure sensors and switches are sequentially arranged along the flow direction of the hydraulic oil. When the switch of the third-level output oil circuit is turned on, the switches on the fourth-level and fifth-level output oil circuits are turned off, and the switch on the second output circuit branch is turned on, the flow and pressure on the third-level output oil circuit can be measured by adjusting the adjustable switch on the third-level output oil circuit; the switch on the fourth-level output oil circuit can be turned on alone to measure the flow and pressure on the fourth-level output oil circuit, and the flow and pressure on the oil circuit cannot be adjusted; the switch on the fifth-level output oil circuit can be turned on alone to adjust the pressure and flow of the oil circuit by adjusting the oil pressure regulator 23, and measure the flow and pressure of the oil circuit; two or three oil circuits can be opened to measure pressure and flow, and pressure and flow can be measured according to actual working conditions, so that the performance of the oil pump 20 under different conditions can be tested, so that the oil pump meets the use requirements under different conditions. Here, the flow sensor is electrically connected to the flow meter 13 for displaying the flow value, and the pressure sensor is electrically connected to the pressure gauge 18 for displaying the pressure value.

[0046] To further optimize the solution, the measuring unit also includes a speed sensor, which is installed on the motor in the oil pump 20 and is used to measure the speed of the motor. The speed of the motor in the oil pump can be measured under different pressures or different flow rates, and the pressure and flow in different oil circuits can be measured according to the speed of the motor, so as to monitor the performance of the oil pump. The speed sensor is electrically connected to the tachometer 14 to display the speed value.

[0047] The above-mentioned temperature sensor, pressure sensor, flow sensor and speed sensor are electrically connected to the temperature meter 15, pressure gauge 18, flow meter 13 and tachometer 14 respectively through the control unit, and the temperature, pressure, flow and speed monitored in real time are displayed to facilitate the operator to observe when performing oil pump performance test.

[0048] The control unit includes a control module and a data display module, and the control module is electrically connected to the data display module. In this embodiment, the control module is a PLC programmable control system, which is connected to each sensor of the measuring unit and is used for collecting and processing the performance parameters of the oil pump. The PLC programmable control system is preset with a pre-programmed program. The data display module includes a TP touch screen control acquisition system and a test dynamic monitoring system. The TP touch screen control acquisition system is electrically connected to the test dynamic monitoring system. The test dynamic monitoring system monitors the collected data in real time. The TP touch screen control acquisition system can edit the measured parameters. At the same time, the TP touch screen control acquisition system can input voltage or current to the oil pump 20 performance test system, thereby controlling the rotation speed of the oil pump 20, and simulating the performance test of the oil pump 20 under different conditions.

[0049] To further optimize the solution, all structures of the equipment body in this embodiment meet the explosion-proof requirements and are suitable for environments containing gasoline vapor. They are all manufactured in accordance with the design and manufacturing explosion-proof standards. At the same time, an anti-misoperation function is set in the system to prevent damage caused by excessive current or excessive system pressure.

[0050] The working process of this embodiment is as follows: the operator installs the oil pump 20 group on the test platform, fixes it by clamping it on the chuck, and detects the position of the oil pump 20 through the measuring device 8. After the oil pump 20 is installed correctly, the special quick connector for the output circuit pipeline in the hydraulic unit is connected, and the power supply and various types of sensors are installed in place; press the start button 12, the lifting system 9 will drive the oil pump 20 group to immerse in the oil tank; select the corresponding program through the human-machine intelligent interface system 3, open the corresponding output oil channel, and control the hydraulic valves on each circuit through the control unit to automatically open or close the oil channel; run the software to start the test and store the parameters fed back by the real-time test; after the test is completed, the lifting system 9 rises to lift the oil pump 20, and the operator removes the oil pump 20.

[0051] The advantages and positive effects of the present invention are as follows: due to the adoption of the above technical scheme, the oil pump performance test system has a simple structure, is easy to maintain, and has a low production cost, and can simulate the working environment of the oil pump, which is convenient for testing the performance of the oil pump; the oil pump performance test system can input data on the oil pump voltage or current through a human-machine interface to test the real-time working pressure, flow, temperature, speed and other parameters of the oil pump, and at the same time can test the performance parameters of the oil pump at different pressures and different flow rates through different output oil circuit channels, and can realize intelligent data exchange, record and storage, to realize the test of the oil pump performance, so that the oil pump can meet the performance requirements of use; the oil pump performance test system simulates the working condition of the oil pump at work, and a plurality of output oil circuit channels are provided at the output end of the oil pump, and at different output Pressure sensors, temperature sensors and flow sensors are respectively arranged on the oil outlet channel, which can respectively measure the pressure, temperature and flow parameters of the oil pump under the same voltage, and can respectively set the pressure, temperature and flow parameters of the oil pump under different voltages, so as to obtain detailed conditions of the oil pump under different working conditions and optimize the performance of the oil pump; at the same time, a speed sensor is arranged on the motor in the oil pump, which can measure the speed of the oil pump at all times, and is convenient for testing the performance of the oil pump, so that the speed of the oil pump meets the requirements of the performance; by controlling the pressure and flow of each branch, the temperature, speed and other parameters of the motor tested in real time are fed back to the system for real-time recording, so as to realize simulation testing, and at the same time, all-round monitoring and intelligent processing of various working condition fault information can be carried out, and the operation is simple and convenient.

[0052] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An oil pump performance test system, characterized in that: The invention comprises an equipment body, a test device, a control unit, a hydraulic unit, a measuring unit and an oil pump, wherein the test device is arranged on the equipment body, the oil pump is arranged on the test device, the hydraulic unit is connected to the test device and the oil pump respectively, the control unit is electrically connected to the measuring unit, the measuring unit is arranged on the hydraulic unit, and the oil pump is electrically connected to the control unit; the test device comprises an oil tank, a test platform, a lifting device, a position sensor and a clamping device, the oil tank is arranged on the equipment body, the test platform is arranged on the oil tank, the lifting device is arranged on one side of the test platform, the clamping device The holding device is arranged on the lifting device, the position sensor is arranged on the clamping device, the position sensor is electrically connected to the control unit, and the oil pump is connected to the oil tank; the hydraulic unit includes a plurality of output circuit pipelines, one end of the plurality of output circuit pipelines is respectively connected to the output port of the oil pump through the oil circuit branch control panel, the other end of the plurality of output circuit pipelines is respectively connected to the oil tank, and a hydraulic valve is arranged on the output circuit pipeline; the hydraulic unit includes a first output circuit branch and a second output circuit branch, and both ends of the first output circuit branch and the second output circuit branch are arranged in parallel at the oil discharge port of the oil pump; The measuring unit comprises a flow sensor, a pressure sensor and a temperature sensor, wherein the flow sensor, the pressure sensor and the temperature sensor are respectively arranged on the hydraulic unit; The first output circuit branch includes a first-stage oil circuit and a second-stage oil circuit connected in parallel, the output ends of the first-stage oil circuit and the second-stage oil circuit are both connected to the first output circuit branch, the first-stage oil circuit and the second-stage oil circuit are both provided with a switch and the flow sensor, and the first output circuit branch is provided with the pressure sensor and the adjustable switch; The second output circuit branch includes a third-level oil circuit, a fourth-level oil circuit and a fifth-level oil circuit. The third-level oil circuit, the fourth-level oil circuit and the fifth-level oil circuit are connected in parallel, and the output ends are all connected to the second output circuit branch. The third-level oil circuit is provided with a third switch and a third adjustable switch, the fourth-level oil circuit is provided with a fourth switch, the fifth-level oil circuit is provided with a fifth switch and an oil pressure regulator, and the second output circuit branch is provided with the flow sensor, the pressure sensor and the main switch in sequence.

2. The oil pump performance testing system according to claim 1, characterized in that: The measuring unit further comprises a rotation speed sensor and a liquid level sensor. The rotation speed sensor is arranged on the oil pump, and the liquid level sensor is arranged in the oil tank.

3. The oil pump performance testing system according to claim 1, characterized in that: The control unit includes a control module and a data display module, and the control module is electrically connected to the data display module.

4. The oil pump performance testing system according to claim 3, characterized in that: The control unit also includes a power supply, which is electrically connected to the motor in the oil pump.

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