Performance testing device for hydraulic electric control proportional multi-way valve

Abstract

The utility model relates to the technical field of multi-way valve testing, in particular to a hydraulic electric control proportional multi-way valve performance testing device, which comprises an oil tank, a plurality of oil outlets arranged at the bottom of the oil tank and a plurality of oil inlets arranged at the top of the oil tank. Each hydraulic pump comprises an oil outlet end and an oil inlet end, and the oil inlet ends are connected with the oil outlets respectively; the testing station comprises a testing seat and a fixing assembly connected with the testing seat, a tested piece with a plurality of oil inlet interfaces and oil outlet interfaces is installed on the testing seat, and the fixing assembly is connected with the tested piece; and the test distribution mechanism comprises an oil inlet connected with the oil inlet interface, an oil outlet connected with the oil outlet interface, an oil inlet pipeline connected with the oil outlet end, and an oil outlet pipeline connected with the oil inlet. According to the utility model, through cooperation of all the mechanisms, accurate testing of the hydraulic electric control proportional valve is realized, manual intervention is reduced, testing efficiency is improved, personal errors are reduced, and testing precision and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-way valve testing, in particular to a hydraulic electrically controlled proportional multi-way valve performance testing device. Background Art

[0002] The hydraulic electronically controlled proportional multi-way valve is an important component in the hydraulic system for accurately controlling the flow, pressure and flow direction of hydraulic oil. It is widely used in engineering machinery, metallurgical equipment, aerospace, automated production lines and other fields to adjust the motion state and working performance of hydraulic actuators. The hydraulic electronically controlled proportional multi-way valve receives electronic control signals (such as current, pressure, displacement and other signals) to accurately adjust the position of the valve core, thereby achieving flow and pressure control of multiple working channels in the hydraulic system.

[0003] With the continuous development of hydraulic technology, the performance requirements for hydraulic electronically controlled proportional multi-way valves are increasing day by day. Especially under complex working conditions, the response speed, adjustment accuracy, stability and reliability of hydraulic electronically controlled proportional multi-way valves directly affect the working efficiency and safety of hydraulic systems. Therefore, it is particularly important to conduct high-precision and comprehensive performance testing on hydraulic electronically controlled proportional multi-way valves.

[0004] Currently, testing of hydraulically controlled proportional multi-way valves typically relies on traditional laboratory equipment and manual inspection methods. Existing testing equipment has several shortcomings, including the inability to comprehensively test valves under multiple operating conditions, resulting in complex testing processes and low accuracy. Many testing devices can only test a single parameter, making it difficult to provide a comprehensive performance evaluation. Furthermore, existing equipment often lacks automation and intelligence, resulting in cumbersome operation and susceptibility to human influence, making it difficult to guarantee the accuracy and consistency of test results.

[0005] Therefore, there is an urgent need for a testing device that can comprehensively and accurately test the performance of hydraulic electronically controlled proportional multi-way valves, especially equipment that can simulate different working conditions, be automated and efficient, and provide accurate data analysis, so as to ensure that the performance of hydraulic valves meets the design standards and actual application requirements during the research and development, production, maintenance and use of hydraulic valves. Utility Model Content

[0006] In view of at least one of the above technical problems, the present invention provides a hydraulic electrically controlled proportional multi-way valve performance test device, which adopts a test distribution mechanism to realize the performance test of the multi-way valve.

[0007] The utility model provides a hydraulic electronically controlled proportional multi-way valve performance test device, comprising:

[0008] A fuel tank, wherein the fuel tank has a plurality of oil outlets at the bottom and a plurality of oil inlets at the top;

[0009] A plurality of hydraulic pumps each comprising an oil outlet and an oil inlet, wherein the oil inlet is connected to the oil outlet respectively;

[0010] The test station includes a test seat and a fixing assembly connected to the test seat. A test piece having a plurality of oil inlet and outlet ports is mounted on the test seat. The fixing assembly is connected to the test piece.

[0011] The test distribution mechanism includes an oil inlet connected to the oil inlet interface, an oil outlet connected to the oil outlet interface, an oil inlet pipeline connected to the oil outlet end, and an oil outlet pipeline connected to the oil inlet;

[0012] In which, the test distribution mechanism also includes an electromagnetic reversing valve, a flow regulating valve, a pressure sensor and a flow meter. The electromagnetic reversing valve is configured to control the working status of the oil inlet and the oil outlet, the flow regulating valve is configured to adjust the flow and pressure of the oil inlet and the oil outlet, the pressure sensor is configured to test the pressure of the test piece, and the flow meter is configured to measure the real-time liquid flow in the test piece.

[0013] In some embodiments of the present invention, there is also a filtering mechanism, including a filter pump connected to the bottom of the oil tank at one end, a filter assembly connected to the other end of the filter pump, and the other end of the filter assembly is connected to the top of the oil tank.

[0014] In some embodiments of the present invention, there is also a pressure control mechanism, including an overflow component and a pressure regulating component, the pressure regulating component is connected to the oil outlet end, the other end of the pressure regulating component is connected to the overflow component, and the other end of the overflow component is connected to the top of the oil tank.

[0015] In some embodiments of the present invention, a temperature control mechanism is further provided, comprising a temperature measuring component fixedly arranged inside the oil tank, a heating component and a cooling component connected to the oil tank.

[0016] In some embodiments of the present invention, the cooling assembly includes a cooler and a cooling pump connected to the cooler, and the cooler has cooling pipes connected to the top and bottom of the oil tank respectively.

[0017] In some embodiments of the present invention, there is at least one converging pressure regulating block between the oil outlet and the oil inlet pipeline, the oil outlets of at least two hydraulic pumps are connected to the input end of one of the converging pressure regulating blocks, and the output end of the converging pressure regulating block is connected to the oil inlet pipeline.

[0018] In some embodiments of the present invention, at least one pressure regulating overflow block is provided between the converging pressure regulating block and the test distribution mechanism, one end of the pressure regulating overflow block is connected to the converging pressure regulating block, and the other end is connected to the oil inlet pipeline.

[0019] In some embodiments of the present invention, there are a total of 10 oil inlet interfaces and 10 oil outlet interfaces.

[0020] In some embodiments of the present invention, a data acquisition mechanism is further provided, and the data acquisition mechanism is configured to acquire real-time data from each of the pressure sensors.

[0021] In some embodiments of the present invention, the test station and the test distribution mechanism are provided with two each and are respectively connected, and the two oil outlet pipelines are both connected to the oil inlet.

[0022] The beneficial effects of the utility model are as follows: the utility model is capable of simulating a variety of working conditions by setting multiple hydraulic pumps and multiple oil inlets and outlets, realizing flow, pressure and direction control of multiple channels, and ensuring the comprehensiveness and accuracy of the test; the configuration of the electromagnetic reversing valve and the flow regulating valve can accurately control the flow direction, flow and pressure of the hydraulic oil, thereby improving the flexibility and adjustability of the test; the real-time monitoring function of the pressure sensor and the flow meter enables the pressure and flow of the test piece to be collected in real time, thereby ensuring the accuracy of the test results; through the design of the automated control system, manual intervention is reduced, the test efficiency is improved and human errors are reduced; the device has strong adaptability and can support performance tests of different types of hydraulically controlled proportional multi-way valves. Whether it is single-channel, multi-channel or high-pressure, large-flow tests, they can be flexibly adjusted to meet the needs of different working conditions, which not only improves the test accuracy and stability, but also improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a structural diagram of a hydraulic electrically controlled proportional multi-way valve performance testing device in an embodiment of the present utility model;

[0025] Figure 2 A top view of a performance testing device for a hydraulically electrically controlled proportional multi-way valve in an embodiment of the present utility model;

[0026] Figure 3This is a structural diagram of the oil tank and hydraulic pump in the hydraulic electronically controlled proportional multi-way valve performance test device in an embodiment of the present utility model;

[0027] Figure 4 This is a structural diagram of the oil tank and the hydraulic pump in the hydraulic electronically controlled proportional multi-way valve performance testing device according to an embodiment of the present invention from another angle;

[0028] Figure 5 Schematic diagram of the structure of the test distribution mechanism in the hydraulic and electronically controlled proportional multi-way valve performance test device in the embodiment of the present utility model;

[0029] Figure 6 It is a structural schematic diagram of a test station in a performance testing device for a hydraulically electrically controlled proportional multi-way valve in an embodiment of the present utility model.

[0030] Figure numerals: 1. Oil tank; 11. Oil outlet; 12. Oil inlet; 2. Hydraulic pump; 21. Oil outlet; 22. Oil inlet; 3. Test station; 31. Test seat; 32. Fixing assembly; 33. Test piece; 33a. Oil inlet interface; 33b. Oil outlet interface; 4. Test distribution mechanism; 41. Oil inlet; 42. Oil outlet; 43. Oil inlet pipeline; 44. Oil outlet pipeline; 45. Solenoid reversing valve; 46. Flow regulating valve; 47. Pressure sensor; 48. Pressure regulating overflow block; 5. Filter mechanism; 51. Filter pump; 52. Filter assembly; 6. Converging pressure regulating block; 61. Input end; 62. Output end. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art in the field of the present invention. The terms used in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0034] like Figures 1 to 6 The hydraulic and electronically controlled proportional multi-way valve performance test device shown includes:

[0035] The fuel tank 1 has a plurality of oil outlets 11 at the bottom and a plurality of oil inlet ports 12 at the top. It should be noted that the fuel tank 1 can be in many forms, and can be a fuel tank 1 with a filtering function, a fuel tank 1 with a cooling function, a fuel tank 1 with a heating function, or a composite fuel tank 1.

[0036] Multiple hydraulic pumps 2 each include an oil outlet 21 and an oil inlet 22, and the oil inlet 22 is respectively connected to the oil outlet 11; it should be pointed out here that the hydraulic pump 2 has many forms, which can be an electric hydraulic pump 2, a pneumatic hydraulic pump 2, or an internal combustion engine hydraulic pump 2 and other forms of hydraulic pumps 2.

[0037] The test station 3 includes a test seat 31, a fixing assembly 32 connected to the test seat 31, a test piece 33 having a plurality of oil inlet interfaces 33a and oil outlet interfaces 33b is installed on the test seat 31, and the fixing assembly 32 is connected to the test piece 33; it should be pointed out here that there are many forms of the fixing assembly 32, which can be bolted, snap-on, magnetic or other forms that can be fixed.

[0038] The test distribution mechanism 4 includes an oil inlet 41 connected to the oil inlet interface 33a, an oil outlet 42 connected to the oil outlet interface 33b, an oil inlet pipeline 43 connected to the oil outlet end 21, and an oil outlet pipeline 44 connected to the oil inlet 12; it should be pointed out here that the number of the oil inlet 41 and the oil outlet 42 can be set according to the actual number of hydraulic electronically controlled proportional multi-way valves to be tested, which can be 10, 12 or other numbers of oil ports.

[0039] Among them, the test distribution mechanism 4 also includes an electromagnetic reversing valve 45, a flow regulating valve 46, a pressure sensor 47 and a flow meter. The electromagnetic reversing valve 45 is configured to control the working status of the oil inlet 41 and the oil outlet 42, the flow regulating valve 46 is configured to adjust the flow and pressure of the oil inlet 41 and the oil outlet 42, the pressure sensor 47 is configured to test the pressure of the test piece 33, and the flow meter is configured to measure the real-time liquid flow in the test piece 33.

[0040] like Figure 1 、 Figure 2As shown, the working process of the hydraulic electronically controlled proportional multi-way valve performance test device is as follows: before starting the test, first connect the test piece 33 to the test device, start the hydraulic pump 2, and the hydraulic oil flows into the pump body from the oil outlet 11 at the bottom of the oil tank 1. After being pressurized by the hydraulic pump 2, it enters the oil inlet pipeline 43 through the oil outlet end 21 and flows to the test distribution mechanism 4; the test distribution mechanism 4 controls the flow direction, flow rate and pressure of the hydraulic oil through the electromagnetic reversing valve 45 and the flow regulating valve 46, and delivers the hydraulic oil to the oil inlet interface 33a of the test piece 33 to simulate different working conditions; the electromagnetic reversing valve 45 adjusts the working conditions of the oil inlet port 41 and the oil outlet port 42 according to the control signal, and the flow regulating valve 46 ensures that the flow rate and pressure of the hydraulic oil meet the preset standards; the pressure sensor 47 and the flow meter monitor in real time The pressure and flow of the test piece 33 ensure the accuracy of the test data; the hydraulic oil flows out after passing through the test piece 33, enters the return oil pipeline, and returns to the oil tank 1; in this process, the oil is cleaned by the filter pump 51 and the filter component 52 to remove impurities and ensure the stability of the system; at the same time, the temperature measuring component in the temperature control mechanism monitors the temperature of the hydraulic oil in the oil tank 1 in real time. When the oil temperature exceeds the set range, the heating or cooling component will automatically start and adjust the temperature to ensure that the hydraulic oil is within the ideal working temperature range. All sensors and instruments will transmit real-time data to the data acquisition mechanism to record and analyze various test data; after the test is completed, the system stops automatically, and the test results are evaluated according to the preset standards. The judgment of whether it is qualified or not will be made based on the pressure, flow, temperature and other data collected in real time.

[0041] The utility model provides multiple hydraulic pumps 2 and multiple oil inlets 12 and oil outlets 11, so that the device can simulate various working conditions, realize flow, pressure and direction control of multiple channels, and ensure the comprehensiveness and accuracy of the test; the configuration of the electromagnetic reversing valve 45 and the flow regulating valve 46 can accurately control the flow direction, flow and pressure of the hydraulic oil, thereby improving the flexibility and adjustability of the test; the real-time monitoring function of the pressure sensor 47 and the flow meter enables the pressure and flow of the test piece 33 to be collected in real time, thereby ensuring the accuracy of the test results; through the design of the automated control system, manual intervention is reduced, the test efficiency is improved and human errors are reduced; the device has strong adaptability and can support performance tests of different types of hydraulically controlled proportional multi-way valves. Whether it is single-channel, multi-channel or high-pressure, large-flow tests, they can be flexibly adjusted to meet the needs of different working conditions, which not only improves the test accuracy and stability, but also improves work efficiency.

[0042] In order to make the hydraulic oil circulating in the oil tank 1, hydraulic pump 2 and test station 3 purer and reduce the damage to the device caused by internal impurities, Figure 1 、 Figure 2As shown, the hydraulic system also includes a filtering mechanism 5, comprising a filter pump 51 connected at one end to the bottom of the oil tank 1, a filter assembly 52 connected to the other end of the filter pump 51, and the other end of the filter assembly 52 communicating with the top of the oil tank 1. By providing the filter pump 51 connected to the bottom of the oil tank 1 and the filter assembly 52 communicating with the filter pump 51, effective filtration and circulation of hydraulic oil can be achieved in the hydraulic system. The filter pump 51 draws hydraulic oil from the bottom of the oil tank 1 and transfers it to the filter assembly 52, removing particulate impurities and contaminants from the hydraulic oil. The filtered, clean hydraulic oil is then returned to the top of the oil tank 1, thereby ensuring that the hydraulic oil in the hydraulic system is always clean. This not only extends the service life of hydraulic components (such as valves and pumps), but also reduces failures caused by contamination in the hydraulic system, thereby improving the stability and reliability of the system. It should be noted that the filter pump 51 can be in a variety of forms, including a gear pump, a centrifugal pump, or a screw pump. It should also be noted that the filter assembly 52 can be in a variety of forms, and the filtration type of the filter assembly 52 can be selected based on the impurities present.

[0043] In some embodiments of the present invention, there is also a pressure control mechanism, including an overflow component and a pressure regulating component. The pressure regulating component is connected to the oil outlet 21, and the other end of the pressure regulating component is connected to the overflow component, and the other end of the overflow component is connected to the top of the oil tank 1. By setting the pressure regulating component and the overflow component to work together, precise control of the pressure of the hydraulic system is achieved. The pressure regulating component is connected to the oil outlet 21 of the hydraulic pump 2 and is used to dynamically adjust the pressure according to system requirements to ensure that the hydraulic oil pressure is within the working range. The overflow component serves as a safety protection device. When the pressure exceeds the preset value, the hydraulic oil returns to the top of the oil tank 1 through the overflow component, effectively avoiding damage to the hydraulic system and components caused by excessive pressure, stabilizing the operation of the hydraulic system, preventing adverse effects caused by pressure fluctuations, and improving the safety, reliability and efficiency of the hydraulic system.

[0044] In some embodiments of the present invention, a temperature control mechanism is further provided, including a temperature measuring component fixedly installed inside the oil tank 1, and a heating component and a cooling component connected to the oil tank 1. By providing the temperature measuring component, the heating component, and the cooling component fixedly installed inside the oil tank 1, real-time monitoring and dynamic adjustment of the temperature of the hydraulic system can be achieved. The temperature measuring component can accurately detect the temperature of the hydraulic oil inside the oil tank 1 and feed the data back to the control system. The heating component and the cooling component are respectively started or shut down according to the set temperature range, ensuring that the hydraulic oil is always within the optimal operating temperature range. This can effectively avoid the reduction of oil viscosity and system efficiency due to excessively high hydraulic oil temperature, or the lack of fluidity and component wear due to excessively low temperature, thereby improving the stability and service life of the hydraulic system.

[0045] In some embodiments of the present invention, the cooling assembly includes a cooler, a cooling pump connected to the cooler, and the cooler has cooling pipes connected to the top and bottom of the oil tank 1, respectively. By providing the cooler, the cooling pump, and the cooling pipes connected to the top and bottom of the oil tank 1, efficient cooling and circulation of the hydraulic oil can be achieved; the cooling pump draws the hydraulic oil in the oil tank 1 into the cooler, and after the cooler effectively exchanges heat with the oil, the cooled hydraulic oil flows back to the top and bottom of the oil tank 1 through the cooling pipes, respectively, to ensure that the oil temperature in the oil tank 1 is evenly distributed. This not only prevents the viscosity of the hydraulic oil from decreasing and the oil from deteriorating due to high temperature, but also maintains the stability and reliability of the hydraulic system under continuous high-load operation conditions.

[0046] like Figure 3 、 Figure 4 As shown, there is at least one converging pressure regulating block 6 between the oil outlet 21 and the oil inlet pipeline 43. The oil outlets 21 of at least two hydraulic pumps 2 are connected to the input end of one converging pressure regulating block 6, and the output end 62 of the converging pressure regulating block 6 is connected to the oil inlet pipeline 43. By providing at least one converging pressure regulating block 6 between the oil outlet 21 and the oil inlet pipeline 43, the centralized regulation and converging function of the output pressure and flow of multiple hydraulic pumps 2 is achieved. The input end of the converging pressure regulating block 6 is connected to the oil outlet 21 of at least two hydraulic pumps 2, which can integrate the hydraulic oil output by multiple pumps and balance the pressure fluctuations through the internal pressure regulating structure to ensure the stability of the pressure and flow of the output oil. The output end 62 of the converging pressure regulating block 6 is connected to the oil inlet pipeline 43, so that the merged hydraulic oil can be efficiently delivered to various components of the hydraulic system, which can significantly improve the operating efficiency of the hydraulic system in the multi-pump parallel working mode, reduce the pressure unevenness problem caused by the simultaneous operation of multiple hydraulic pumps 2, and improve the stability and reliability of the system.

[0047] like Figure 6 As shown, at least one pressure-regulating overflow block 48 is further provided between the converging pressure-regulating block 6 and the test distribution mechanism 4. One end of the pressure-regulating overflow block 48 is connected to the converging pressure-regulating block 6, and the other end is connected to the oil inlet line 43. By providing at least one pressure-regulating overflow block 48 between the converging pressure-regulating block 6 and the test distribution mechanism 4, the pressure of the hydraulic oil entering the test distribution mechanism 4 can be further accurately regulated and controlled, while providing a reliable overflow protection function. One end of the pressure-regulating overflow block 48 is connected to the converging pressure-regulating block 6 to receive the hydraulic oil output by it, and the other end is connected to the oil inlet line 43. The overflow function releases excess pressure hydraulic oil, thereby avoiding damage to the test distribution mechanism 4 or the test piece 33 due to excessive pressure. This can achieve dynamic balance of the hydraulic system pressure and effectively reduce the impact of pressure fluctuations on system stability and test accuracy.

[0048] like Figure 5As shown, there are a total of 10 oil inlet interfaces 33a and oil outlet interfaces 33b. By designing a configuration with a total of 10 oil inlet interfaces 33a and oil outlet interfaces 33b, the testing requirements of a multi-channel hydraulic system can be met, and independent input and output control of multiple hydraulic oil flows can be achieved. This allows for simultaneous testing of multiple hydraulic channels or different types of test pieces 33, significantly improving test efficiency and system applicability. The independent setting of each interface allows for more flexible flow and pressure adjustment, and the operating conditions of each interface can be individually adjusted according to specific test requirements to ensure test accuracy and effectiveness.

[0049] Some embodiments of the present invention also include a data acquisition mechanism configured to acquire real-time data from each pressure sensor 47. By providing the data acquisition mechanism, test data from each pressure sensor 47 can be acquired in real time, enabling real-time monitoring and accurate recording of pressure parameters in the hydraulic system. This allows for dynamic analysis of pressure changes during the operation of the hydraulic system, providing detailed test data support and facilitating performance evaluation of the hydraulic electronically controlled proportional multi-way valve, including key indicators such as its pressure regulation capability, response speed, and stability.

[0050] In some embodiments of the present invention, Figure 1 、 Figure 2 As shown, there are two test stations 3 and two test distribution mechanisms 4, respectively, which are connected separately, and the two oil outlet pipelines 44 are both connected to the oil inlet 12. By providing two test stations 3 and two test distribution mechanisms 4, respectively, and connecting them separately, the device can independently test multiple test pieces 33 at the same time, thereby significantly improving test efficiency and equipment utilization. Each test station 3 and the corresponding test distribution mechanism 4 operate independently, avoiding pressure interference or data confusion caused by sharing test channels, ensuring the accuracy and reliability of test results. The design of both oil outlet pipelines 44 being connected to the oil inlet 12 optimizes the flow path of the hydraulic oil, ensuring that each test station 3 can stably obtain the required hydraulic oil flow and pressure, thereby meeting the testing requirements of multiple channels and multiple working conditions.

[0051] Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and the specification are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic electronically controlled proportional multi-way valve performance test device, characterized in that: include: A fuel tank, wherein the fuel tank has a plurality of oil outlets at the bottom and a plurality of oil inlets at the top; A plurality of hydraulic pumps each comprising an oil outlet and an oil inlet, wherein the oil inlet is connected to the oil outlet respectively; The test station includes a test seat and a fixing assembly connected to the test seat. A test piece having a plurality of oil inlet and outlet ports is mounted on the test seat. The fixing assembly is connected to the test piece. The test distribution mechanism includes an oil inlet connected to the oil inlet interface, an oil outlet connected to the oil outlet interface, an oil inlet pipeline connected to the oil outlet end, and an oil outlet pipeline connected to the oil inlet; In which, the test distribution mechanism also includes an electromagnetic reversing valve, a flow regulating valve, a pressure sensor and a flow meter. The electromagnetic reversing valve is configured to control the working status of the oil inlet and the oil outlet, the flow regulating valve is configured to adjust the flow and pressure of the oil inlet and the oil outlet, the pressure sensor is configured to test the pressure of the test piece, and the flow meter is configured to measure the real-time liquid flow in the test piece.

2. The hydraulic electronically controlled proportional multi-way valve performance testing device according to claim 1 is characterized in that: It also has a filtering mechanism, including a filtering pump with one end connected to the bottom of the oil tank, a filtering component connected to the other end of the filtering pump, and the other end of the filtering component is connected to the top of the oil tank.

3. The hydraulic electronically controlled proportional multi-way valve performance testing device according to claim 1, characterized in that: It also has a pressure control mechanism, including an overflow component and a pressure regulating component. The pressure regulating component is connected to the oil outlet end, the other end of the pressure regulating component is connected to the overflow component, and the other end of the overflow component is connected to the top of the oil tank.

4. The hydraulic electronically controlled proportional multi-way valve performance testing device according to claim 1, characterized in that: The oil tank is also provided with a temperature control mechanism, which comprises a temperature measuring component fixedly arranged inside the oil tank, a heating component and a cooling component connected to the oil tank.

5. The hydraulic electronically controlled proportional multi-way valve performance testing device according to claim 4, characterized in that: The cooling assembly includes a cooler and a cooling pump connected to the cooler. The cooler is provided with cooling pipelines connected to the top and bottom of the oil tank respectively.

6. The hydraulic electronically controlled proportional multi-way valve performance testing device according to claim 1, characterized in that: There is also at least one converging pressure regulating block between the oil outlet and the oil inlet pipeline. The oil outlets of at least two hydraulic pumps are connected to the input end of one converging pressure regulating block, and the output end of the converging pressure regulating block is connected to the oil inlet pipeline.

7. The hydraulic electronically controlled proportional multi-way valve performance testing device according to claim 6, characterized in that: At least one pressure regulating overflow block is further provided between the confluent pressure regulating block and the test distribution mechanism. One end of the pressure regulating overflow block is connected to the confluent pressure regulating block, and the other end is connected to the oil inlet pipeline.

8. The hydraulic electronically controlled proportional multi-way valve performance testing device according to claim 1, characterized in that: There are 10 oil inlet interfaces and 10 oil outlet interfaces in total.

9. The hydraulic electronically controlled proportional multi-way valve performance testing device according to claim 1, characterized in that: It also has a data acquisition mechanism, which is configured to acquire real-time data from each of the pressure sensors.

10. The performance testing device for a hydraulic and electrically controlled proportional multi-way valve according to any one of claims 1 to 9, characterized in that: The test station and the test distribution mechanism each have two and are connected to each other, and the two oil outlet pipelines are both connected to the oil inlet.

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