Lubricating oil sliding friction test bed

Abstract

The invention relates to the technical field of lubricating oil performance testing, in particular to a lubricating oil sliding friction test bed which comprises a loading device, a fixed friction pair and a sliding friction pair, the sliding friction pair is in transmission connection with a driving device, and the fixed friction pair is connected with a lubricating oil supply system and a temperature control system. The loading device, the driving device, the lubricating oil supply system and the temperature control system are electrically connected with a control system, the control system is electrically connected with a detection device, and the detection device is used for detecting pressure changes between the loading device and the fixed friction pair and between the sliding friction pair and the driving device. According to the invention, the actual working state of the lubricating oil under different pressure, speed and temperature conditions can be accurately simulated, so that the test result is more suitable for actual application, and the accuracy of lubricating oil performance evaluation is improved. Operators can conveniently set various test parameters on the control system and monitor the test process, automation and intelligence of test operation are achieved, and the test efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lubricating oil performance testing, in particular to a lubricating oil sliding friction test bench. Background Art

[0002] With the continuous development of industrial technology, mechanical equipment has higher and higher requirements for the performance of lubricants. Accurate evaluation of sliding friction performance can help R&D personnel promote the innovation of lubricant technology and develop new lubricant products with higher performance, more environmental protection and more energy saving. Therefore, accurate evaluation of the sliding friction performance of lubricants is crucial in the research and development, production and quality inspection of lubricants.

[0003] The existing test bench has a low degree of automation. When testing lubricants during the research and development and production of lubricants, frequent manual operations are required, whether it is adjusting the pressure of the loading system or adding and controlling the flow of lubricants. This not only leads to low test efficiency and consumes a lot of manpower and time costs, but also the human factor has a great impact on the test results. The operating habits and proficiency of different operators may lead to different results for the same test, which is not conducive to ensuring the accuracy and reliability of the test data.

[0004] Therefore, how to solve the problem of low automation level of existing test benches, realize automatic control and precise adjustment of the test process, and improve test efficiency and data accuracy is an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0005] In order to solve the problem of low automation of existing test benches, realize automatic control and precise adjustment of the test process, and improve test efficiency and data accuracy, the present application provides a lubricating oil sliding friction test bench.

[0006] The lubricating oil sliding friction test bench provided in this application adopts the following technical solution: A lubricating oil sliding friction test bench comprises a cabinet, a platform is fixedly connected to the top of the cabinet, a frame is fixedly installed on the platform, a loading device is fixedly installed on the frame, a fixed friction pair is installed between the loading device and the platform, a sliding friction pair is slidably connected to the fixed friction pair, a driving device is transmission-connected to the sliding friction pair, a lubricating oil supply system and a temperature control system are connected to the fixed friction pair, a control system electrically connected to the loading device, the driving device, the lubricating oil supply system and the temperature control system is installed inside the cabinet, the control system is electrically connected to a detection device, and the detection device is used to detect pressure changes between the loading device and the fixed friction pair and between the sliding friction pair and the driving device.

[0007] By adopting the above technical solution and utilizing the coordinated work of the loading device, driving device, lubricating oil supply system and temperature control system, the actual working state of lubricating oil under different pressure, speed and temperature conditions can be accurately simulated, making the test results more suitable for practical applications and improving the accuracy of lubricating oil performance evaluation. At the same time, the control system is used to centrally control various devices and systems, and the operator can conveniently set various test parameters on the control system and monitor the test process, thus realizing the automation and intelligence of the test operation, improving the test efficiency and reducing the influence of human factors on the test results.

[0008] Furthermore, the loading device includes a mounting plate fixedly mounted on the frame, a telescopic part is fixedly mounted on the mounting plate, the detection device includes a first pressure sensor, one end of the first pressure sensor is fixedly connected to the telescopic end of the telescopic part, and one end of the first pressure sensor away from the telescopic part is fixedly connected to the fixed friction pair; the telescopic part and the first pressure sensor are both electrically connected to the control system.

[0009] By adopting the above technical solution, the telescopic member can be used to accurately control the force applied to the fixed friction pair, and the magnitude of the loading force can be flexibly adjusted according to different test requirements, thereby accurately simulating the load borne by the lubricating oil under various actual working conditions, thereby improving the accuracy and reliability of the test results. In addition, the setting of the first pressure sensor enables the pressure changes during the test to be monitored in real time. The control system can make timely adjustments based on the pressure feedback, ensuring the stability of the pressure during the test, avoiding interference with the test results due to pressure fluctuations, and further improving the accuracy of the test.

[0010] Furthermore, the fixed friction pair includes a first fixed seat fixedly mounted on the platform, a second fixed seat symmetrically arranged with the first fixed seat is fixedly connected to the loading device, the first fixed seat and the second fixed seat are provided with mounting grooves at the ends close to each other, mounting boxes are installed inside the mounting grooves, and the two mounting boxes are provided with mounting cavities at the ends close to each other, and fixed friction blocks are sealed and slidably connected inside the mounting cavities, and the sliding friction pair is slidably connected to the two fixed friction blocks at the same time.

[0011] By adopting the above technical solution and using two symmetrically arranged fixed seats and fixed friction blocks, it is not only possible to better simulate the common double-sided friction or multi-faceted friction conditions in practice, making the test results closer to the actual application scenario and improving the accuracy of lubricant performance evaluation, but also to make the entire fixed friction pair have better stability during loading and sliding, and to ensure the reliability and repeatability of the test. In addition, the fixed friction block is installed in the installation cavity, and the installation box is sealed and slidably connected in the installation groove. This design facilitates the replacement of fixed friction blocks of different materials, shapes or specifications to meet different test requirements, and enhances the versatility and flexibility of the test bench.

[0012] Furthermore, the fixed friction block is provided with a plurality of rows of through holes arranged in parallel, an oil supply passage is provided inside the installation box corresponding to each row of through holes, an oil supply pipe connected to the oil supply passage is fixedly connected to the installation box, the oil supply pipe is sealingly and slidably connected to the through hole, a pressure hole connected to the oil supply passage is provided between every two oil supply pipes on the installation box, an oil delivery passage is provided corresponding to the oil supply passage on the first fixed seat and the second fixed seat, the oil delivery passage is sealedly connected to the oil supply passage, and the first fixed seat An oil delivery box communicated with the oil delivery channel is fixedly and sealedly connected to the second fixed seat, and the oil delivery box is sealed and connected to the oil outlet end of the lubricating oil supply system. The first fixed seat and the second fixed seat are both provided with valve holes that penetrate the oil delivery channel, and a valve core is sealingly and slidably connected inside the valve hole. A spring is installed at the end of the valve core away from the sliding friction pair, and the spring is used to push the valve core to block the oil delivery channel. The valve core is made of magnetic material, and a magnetic strip corresponding to the valve core is fixedly installed on the sliding friction pair along its sliding direction.

[0013] By adopting the above technical solution, the timing of lubricating oil supply can be accurately controlled according to the position of the sliding friction pair by using the cooperation of the magnetic strip and the magnetic valve core. Lubricating oil is provided at the specific position and time where lubrication is required, thereby avoiding the waste of lubricating oil and ensuring that there is always an appropriate amount of lubricating oil on the friction surface during the sliding process, thereby improving the lubrication effect. The design of several rows of through holes, oil supply channels, oil supply holes and pressure holes arranged in parallel enables the lubricating oil to be evenly distributed on the surface of the fixed friction block, thereby forming a uniform lubricating film between the sliding friction pair and the fixed friction block, more accurately simulating the effect of lubricating oil under actual working conditions and improving the accuracy and reliability of the test results.

[0014] Furthermore, an oil return groove is formed on the first fixing seat around the mounting groove, and an oil return hole connected to the oil return groove is formed on the first fixing seat, and the oil return hole is sealed and connected to the oil return end of the lubricating oil supply system.

[0015] By adopting the above technical solution, the oil return groove and the oil return hole are used to recover and recycle the lubricating oil, thereby avoiding the waste of lubricating oil and reducing the test cost. In the long-term test process, the consumption of lubricating oil can be significantly reduced and the resource utilization rate can be improved.

[0016] Furthermore, the sliding friction pair includes a sliding seat, a mounting through hole is opened on the sliding seat corresponding to the fixed friction pair, a sliding friction block is installed inside the mounting through hole, a clamping seat is fixedly installed on the outer side of the sliding seat corresponding to the driving device, a clamping block is slidably installed inside the clamping seat, and the detection device includes a second pressure sensor, the second pressure sensor is fixedly connected to the clamping block, and one end of the second pressure sensor away from the clamping block is fixedly connected to the driving device; the second pressure sensor is electrically connected to the control system.

[0017] By adopting the above technical solution, the second pressure sensor is used to directly measure the pressure between the drive device and the sliding friction pair, which can accurately reflect the magnitude of the friction force during the sliding process, provide key data support for evaluating the friction reduction performance of the lubricant, and improve the accuracy and reliability of the test data. Through long-term monitoring and analysis of pressure data, potential problems in the operation of the equipment, such as wear of the drive device and jamming of sliding parts, can be discovered in advance, providing a basis for the maintenance and maintenance of the equipment, extending the service life of the equipment and reducing maintenance costs.

[0018] Furthermore, the driving device includes a driving motor, a slide rail is fixedly installed on the platform, fixed blocks are fixedly connected at both ends of the slide rail, a sliding block is slidably connected to the slide rail, a driving shaft that passes through the sliding block is rotatably connected between the two fixed blocks, the driving shaft is transmission-connected to the driving motor, two driving grooves symmetrically arranged in a spiral shape are provided on the driving shaft, a driving shuttle is rotatably connected inside the sliding block, and the driving shuttle is slidably connected inside the driving groove; the driving motor is electrically connected to the control system.

[0019] By adopting the above technical solution, the drive slot symmetrically arranged in a spiral shape on the drive shaft is used so that when the drive shaft rotates, the drive shuttle can drive the sliding block to slide back and forth on the slide rail. This reciprocating sliding method is closer to the movement form of many mechanical equipment in actual working conditions, and can more realistically simulate the working conditions of lubricating oil in actual use, making the test results more valuable for reference. In addition, the slide rail and the fixed block provide stable support and guidance for the sliding of the sliding block, ensuring the stability of the sliding process. At the same time, the matching method of the drive shuttle and the drive slot makes the power transmission more stable, reduces vibration and noise during movement, and improves the service life and operation stability of the equipment.

[0020] Furthermore, the lubricating oil supply system includes an oil storage tank, in which a partition is sealed and fixedly connected, and a test oil chamber and an oil return chamber are respectively formed on both sides of the partition, a first delivery pump is fixedly connected inside the cabinet, an output end of the first delivery pump is fixedly connected to a first oil delivery pipe, an input end of the first delivery pump is fixedly connected to a second oil delivery pipe, an end of the first oil delivery pipe away from the first delivery pump is sealed and connected to the oil delivery tank, an end of the second oil delivery pipe away from the first delivery pump is connected to the test oil chamber in the oil storage tank, an oil return pipe is fixedly connected inside the cabinet, one end of the oil return pipe is sealed and connected to the oil return hole provided on the first fixed seat, and the other end of the oil return pipe is sealed and connected to the oil return chamber in the oil storage tank, an oil tank cap is sealingly slidably connected to the second oil delivery pipe and the oil return pipe corresponding to the oil storage tank, the oil tank cap is sealed and connected to the oil storage tank, a ventilation groove is provided on the partition near the top of the oil storage tank, and the first delivery pump is electrically connected to the control system.

[0021] By adopting the above technical solution, the test oil chamber and the return oil chamber are separated by a partition, which effectively prevents impurities, metal debris and other pollutants in the recovered lubricating oil from mixing into the new lubricating oil, ensuring that the lubricating oil used in each test is pure, thereby ensuring the accuracy and reliability of the test results and avoiding test errors caused by lubricating oil contamination. At the same time, the design of the venting groove keeps the air pressure between the test oil chamber and the return oil chamber consistent, avoiding the situation of poor lubricating oil delivery or obstructed reflux caused by air pressure difference, ensuring the smoothness of the lubricating oil during the supply and recovery process, and maintaining the stable operation of the entire lubricating oil supply system.

[0022] Furthermore, the temperature control system includes a refrigeration box and a heating box, the interior of the refrigeration box and the interior of the heating box are filled with temperature control medium, the refrigeration box is fixedly connected to a refrigerator with a heat conduction connection, the heating box is fixedly connected to a heater with a heat conduction connection, the refrigeration box is respectively connected to a first electrically controlled valve and a second electrically controlled valve, the heating box is respectively connected to a third electrically controlled valve and a fourth electrically controlled valve, a first three-way pipe is connected between the first electrically controlled valve and the third electrically controlled valve, a second three-way pipe is connected between the second electrically controlled valve and the fourth electrically controlled valve, the other end of the first three-way pipe is connected to a second delivery pump, and the first fixed Heat exchange tubes are installed inside the fixed seat and the second fixed seat, the two heat exchange tubes are thermally connected to the fixed friction block respectively, one end of the two heat exchange tubes are connected to the output end of the second delivery pump in parallel, and one end of the two heat exchange tubes away from the second delivery pump is connected to the second three-way pipe in parallel, and temperature sensors are installed inside the first fixed seat and the second fixed seat, and the refrigerator, the heater, the first electrically controlled valve, the second electrically controlled valve, the third electrically controlled valve, the fourth electrically controlled valve, the second delivery pump and the temperature sensor are all electrically connected to the control system.

[0023] By adopting the above technical solution and using the temperature sensor to feedback the temperature data in real time, the control system can accurately control the start and stop of the refrigerator and heater and the opening and closing of each electric control valve according to the difference between the actual temperature and the preset temperature, so as to achieve precise adjustment of the temperature of the fixed friction block, meet the temperature conditions required by different tests, and improve the accuracy and reliability of the test results. The refrigeration box and the heating box are respectively equipped with a refrigerator and a heater, which can quickly cool or heat the temperature control medium, and then quickly circulate and deliver it through the second delivery pump, so that the temperature of the fixed friction block can quickly reach and stabilize at the preset value, reducing the test waiting time and improving the test efficiency. It is also possible to easily switch between the cooling and heating modes according to the test requirements to adapt to different test conditions, such as simulating the performance of lubricating oil in different environments such as high temperature and low temperature, expanding the application range of the test bench.

[0024] Furthermore, the control system includes an industrial computer and a programmable logic controller, the industrial computer is provided with a human-computer interaction interface for inputting test parameters, the loading device, the driving device, the detection device, the lubricating oil supply system, and the temperature control system are electrically connected to the industrial computer and the programmable logic controller, and the programmable logic controller controls the loading device, the driving device, the lubricating oil supply system, and the temperature control system according to instructions sent by the industrial computer.

[0025] By adopting the above technical solution and using the human-computer interaction interface of the industrial computer, the operator can easily input various test parameters without complicated manual operation and setting, which reduces the difficulty of operation and improves the operation efficiency. At the same time, the human-computer interaction interface can intuitively display various data and status information during the test, which is convenient for the operator to monitor the progress of the test in real time. In addition, the entire test process is automatically controlled by the control system, which reduces manual intervention and reduces the impact of human factors on the test results. At the same time, automatic control can realize the continuous operation of the test, improve the test efficiency, and reduce the test time and labor cost. In addition, the software and hardware design of the control system has certain flexibility and scalability, and can easily adjust and modify the test parameters and control procedures according to different test requirements and research directions. At the same time, the function and application scope of the test bench can be expanded by adding or replacing detection devices and actuators.

[0026] Beneficial effects achieved: This application can accurately simulate the actual working state of lubricating oil under different pressure, speed and temperature conditions by utilizing the coordinated work of the loading device, driving device, lubricating oil supply system and temperature control system, so that the test results are more in line with practical applications and the accuracy of lubricating oil performance evaluation is improved.

[0027] The present application utilizes a control system to centrally control various devices and systems. Operators can conveniently set various test parameters on the control system and monitor the test process, thereby realizing automation and intelligence of test operations, improving test efficiency, and reducing the impact of human factors on test results.

[0028] The present application can accurately control the timing of lubricating oil supply according to the position of the sliding friction pair by utilizing the cooperation between the magnetic strip and the magnetic valve core. Lubricating oil is provided at the specific position and time when lubrication is required, thereby avoiding the waste of lubricating oil and ensuring that the friction surface always has an appropriate amount of lubricating oil during the sliding process, thereby improving the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the structural decomposition of an embodiment of the present application.

[0031] Figure 3 It is a schematic diagram of the internal structure of an embodiment of the present application.

[0032] Figure 4 It is a schematic diagram of the structural decomposition of a loading device in an embodiment of the present application.

[0033] Figure 5It is a schematic diagram of the structural decomposition of a fixed friction pair and a sliding friction pair in an embodiment of the present application.

[0034] Figure 6 yes Figure 3 Schematic diagram of the enlarged structure of Part I.

[0035] Figure 7 It is a schematic diagram of the structural decomposition of a driving device in an embodiment of the present application.

[0036] Figure 8 yes Figure 7 Schematic diagram of the enlarged structure of Part II.

[0037] Fig. 9 It is a schematic diagram of the structural decomposition of a lubricating oil supply system in one embodiment of the present application.

[0038] Fig.10 It is a schematic diagram of the installation structure of a temperature control system in one embodiment of the present application.

[0039] Description of reference numerals: 100, cabinet; 101, platform; 102, rack; 200, loading device; 201, mounting plate; 202, telescopic member; 300, fixed friction pair; 301, first fixing seat; 302, second fixing seat; 303, mounting groove; 304, mounting box; 305, mounting cavity; 306, fixed friction block; 307, through hole; 308, oil supply channel; 309, oil supply pipe; 310, pressure hole; 311 , oil delivery channel; 312, oil delivery box; 313, valve hole; 314, valve core; 315, spring; 316, magnetic strip; 317, oil return groove; 318, oil return hole; 400, sliding friction pair; 401, sliding seat; 402, mounting through hole; 403, sliding friction block; 404, card seat; 405, card block; 500, driving device; 501, driving motor; 502, slide rail; 503, fixed block; 504, sliding block; 505 , drive shaft; 506, drive slot; 507, drive shuttle; 508, driving wheel; 509, driven wheel; 510, transmission belt; 600, detection device; 601, first pressure sensor; 602, second pressure sensor; 700, lubricating oil supply system; 701, oil storage tank; 702, partition; 703, test oil chamber; 704, return oil chamber; 705, first delivery pump; 706, first oil pipeline; 707, second oil pipeline; 708, oil return pipe; 709, oil tank cap; 710, ventilation groove; 800, temperature control system; 801, refrigeration box; 802, heating box; 803, refrigerator; 804, heater; 805, first electric-controlled valve; 806, second electric-controlled valve; 807, third electric-controlled valve; 808, fourth electric-controlled valve; 809, first three-way pipe; 810, second three-way pipe; 811, second delivery pump; 812, heat exchange pipe; 813, first telescopic pipe. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-10 This application is described in further detail.

[0041] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0042] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] The embodiment of the present application discloses a lubricating oil sliding friction test bench.

[0044] Please refer to Figures 1 to 10 In one embodiment of the present application, a lubricating oil sliding friction test bench includes a cabinet 100, a platform 101 is fixedly connected to the top of the cabinet 100, a frame 102 is fixedly installed on the platform 101, a loading device 200 is fixedly installed on the frame 102, a fixed friction pair 300 is installed between the loading device 200 and the platform 101, a sliding friction pair 400 is slidably connected to the fixed friction pair 300, a driving device 500 is transmission-connected to the sliding friction pair 400, a lubricating oil supply system 700 and a temperature control system 800 are connected to the fixed friction pair 300, a control system electrically connected to the loading device 200, the driving device 500, the lubricating oil supply system 700 and the temperature control system 800 is installed inside the cabinet 100, and the control system is electrically connected to a detection device 600, and the detection device 600 is used to detect pressure changes between the loading device 200 and the fixed friction pair 300 and between the sliding friction pair 400 and the driving device 500.

[0045] The implementation principle of a lubricating oil sliding friction test bench in the embodiment of the present application is: First, the control system controls the lubricating oil supply system 700 to continuously deliver lubricating oil to the friction surfaces of the sliding friction pair 400 and the fixed friction pair 300 at a certain pressure, so that lubrication between the friction surfaces can be achieved. At the same time, the control system adjusts the loading device 200 so that the loading device 200 applies pressure to the fixed friction pair 300. By changing the pressure applied by the loading device 200 to the fixed friction pair 300, different load conditions can be simulated. During the test, the control system controls the driving device 500 to start, and the driving device 500 transmits power to the sliding friction pair 400, so that it slides relatively on the fixed friction pair 300, simulating the sliding friction under actual working conditions. During the test, the temperature control system 800 can be used to adjust the temperature of the fixed friction pair 300, thereby simulating the working state of the lubricating oil under different temperature environments. The detection device 600 monitors the pressure changes between the loading device 200 and the fixed friction pair 300 and between the sliding friction pair 400 and the driving device 500 in real time, and transmits the data to the control system. The control system analyzes and processes the data, and the operator can evaluate the sliding friction performance of the lubricating oil based on these data.

[0046] Please refer to Figures 1 to 10 In one embodiment of the present application, the loading device 200 includes a mounting plate 201 fixedly mounted on the frame 102, and a telescopic member 202 is fixedly mounted on the mounting plate 201. The detection device 600 includes a first pressure sensor 601, one end of the first pressure sensor 601 is fixedly connected to the telescopic end of the telescopic member 202, and the end of the first pressure sensor 601 away from the telescopic member 202 is fixedly connected to the fixed friction pair 300; the telescopic member 202 and the first pressure sensor 601 are both electrically connected to the control system.

[0047] During operation, the control system sends instructions to the telescopic member 202 according to the preset test parameters. The telescopic member 202 is usually a component with telescopic function such as a hydraulic cylinder or an electric push rod. After receiving the instruction, it starts to move, and its telescopic end is displaced, thereby applying a certain force to the fixed friction pair 300. This force simulates the load that the lubricating oil bears on the friction surface in actual working conditions. During the process of the telescopic member 202 applying force, the first pressure sensor 601 senses the pressure change between the telescopic member 202 and the fixed friction pair 300 in real time. The first pressure sensor 601 converts the pressure signal felt into an electrical signal and transmits it to the control system. After receiving the pressure data from the first pressure sensor 601, the control system compares it with the preset pressure value. If there is a deviation between the actual pressure value and the preset value, the control system will adjust the control instruction to the telescopic member 202 in time, so that the telescopic member 202 further expands or retracts, thereby adjusting the force applied to the fixed friction pair 300, so that the pressure reaches and stabilizes at the preset value, to ensure that the test is carried out under precise pressure conditions.

[0048] Please refer to Figures 1 to 10 In one embodiment of the present application, the fixed friction pair 300 includes a first fixed seat 301 fixedly mounted on the platform 101, a second fixed seat 302 symmetrically arranged with the first fixed seat 301 is fixedly connected to the loading device 200, a mounting groove 303 is provided at one end of the first fixed seat 301 and the second fixed seat 302 close to each other, a mounting box 304 is sealed and slidably connected inside the mounting groove 303, a mounting cavity 305 is provided at one end of the two mounting boxes 304 close to each other, a fixed friction block 306 is sealed and slidably connected inside the mounting cavity 305, and the sliding friction pair 400 is slidably connected to the two fixed friction blocks 306 at the same time.

[0049] During operation, when the loading device 200 is working, the force applied by the telescopic member 202 is transmitted to the second fixed seat 302 through the first pressure sensor 601, so that the second fixed seat 302 is close to the first fixed seat 301, thereby applying force to the fixed friction block 306 in the installation cavity 305 of the installation box 304 installed on the second fixed seat 302, and the pressure will be further applied to the fixed friction block 306 installed on the first fixed seat 301 through the sliding friction pair 400. In this way, the load borne by the friction pair in actual working conditions is simulated. The driving device 500 drives the sliding friction pair 400 to move. Since the sliding friction pair 400 is slidably connected with two fixed friction blocks 306 at the same time, during the sliding process, relative sliding occurs between the sliding friction pair 400 and the fixed friction block 306, simulating the sliding friction environment in which the lubricating oil is located in actual applications.

[0050] Please refer to Figures 1 to 10In one embodiment of the present application, a plurality of rows of through holes 307 arranged in parallel are provided on the fixed friction block 306, an oil supply channel 308 is provided inside the installation box 304 corresponding to each row of through holes 307, an oil supply pipe 309 connected to the oil supply channel 308 is fixedly connected to the installation box 304, and the oil supply pipe 309 is sealingly and slidably connected in the through hole 307, and a pressure hole 310 connected to the oil supply channel 308 is provided between every two oil supply pipes 309 on the installation box 304, and an oil delivery channel 311 is provided on the first fixed seat 301 and the second fixed seat 302 corresponding to the oil supply channel 308, and the oil delivery channel 311 is sealed and connected to the oil supply channel 308, and the first fixed seat An oil delivery box 312 connected to the oil delivery channel 311 is fixedly and sealedly connected on the seat 301 and the second fixed seat 302. The oil delivery box 312 is sealed and connected to the oil outlet end of the lubricating oil supply system 700. A valve hole 313 penetrating the oil delivery channel 311 is opened on the first fixed seat 301 and the second fixed seat 302. A valve core 314 is sealed and slidably connected inside the valve hole 313. A spring 315 is installed at the end of the valve core 314 away from the sliding friction pair 400. The spring 315 is used to push the valve core 314 to block the oil delivery channel 311. The valve core 314 is made of magnetic material, and a magnetic strip 316 corresponding to the valve core 314 is fixedly installed on the sliding friction pair 400 along its sliding direction.

[0051] During operation, the lubricating oil supply system 700 delivers the lubricating oil to the oil delivery tank 312, which is connected to the oil delivery channel 311 on the first fixed seat 301 and the second fixed seat 302. In the initial state, the spring 315 pushes the valve core 314 to block the oil delivery channel 311, and the lubricating oil cannot enter the oil supply channel 308 temporarily.

[0052] When the driving device 500 drives the sliding friction pair 400 to slide, the magnetic strip 316 fixedly installed on the sliding friction pair 400 along the sliding direction moves accordingly. When the magnetic strip 316 moves to the position corresponding to the valve core 314, since the valve core 314 is made of magnetic material, the magnetic strip 316 generates an attractive force on the valve core 314, overcoming the elastic force of the spring 315, so that the valve core 314 slides in the valve hole 313, thereby opening the oil delivery channel 311. At this time, the lubricating oil in the oil delivery tank 312 flows into the oil supply channel 308 through the oil delivery channel 311.

[0053] A portion of the lubricating oil flowing into the oil supply channel 308 enters the through hole 307 on the fixed friction block 306 through the oil supply pipe 309, and then seeps out to the contact surface between the fixed friction block 306 and the sliding friction pair 400 to play a lubricating role; the other portion of the lubricating oil can apply pressure to the fixed friction block 306 through the pressure hole 310, so that the pressure compensation of the loading device 200 is achieved through the oil pressure of the lubricating oil, and the dynamic adjustment of the loading force is realized, which is conducive to maintaining the stability and reliability of the loading force.

[0054] When the magnetic strip 316 continues to slide away from the corresponding position of the valve core 314 along with the sliding friction pair 400, the attraction of the magnetic strip 316 to the valve core 314 disappears, and the elastic force of the spring 315 pushes the valve core 314 to re-block the oil supply channel 311, stopping the delivery of lubricating oil to the oil supply channel 308.

[0055] Please refer to Figures 1 to 10 In one embodiment of the present application, an oil return groove 317 is opened on the first fixed seat 301 around the mounting groove 303, and an oil return hole 318 connected to the oil return groove 317 is opened on the first fixed seat 301, and the oil return hole 318 is sealed and connected to the oil return end of the lubricating oil supply system 700.

[0056] During operation, the lubricating oil supply system 700 delivers the lubricating oil to the through hole 307 of the fixed friction block 306 through the oil delivery box 312, the oil delivery channel 311, the oil supply channel 308 and other structures, and then seeps out to the contact surface between the fixed friction block 306 and the sliding friction pair 400 to play a lubricating role. As the sliding friction pair 400 slides, part of the lubricating oil will overflow from the friction surface. The overflowed lubricating oil will flow into the oil return groove 317 opened around the mounting groove 303 on the first fixed seat 301. Since the oil return groove 317 is sealed and connected to the oil return end of the lubricating oil supply system 700 through the oil return hole 318, the lubricating oil flowing into the oil return groove 317 will flow back to the lubricating oil supply system 700 through the oil return hole 318 under the action of gravity and the negative pressure generated by the lubricating oil supply system 700, so as to realize the recycling of the lubricating oil.

[0057] Please refer to Figures 1 to 10 In one embodiment of the present application, the sliding friction pair 400 includes a sliding seat 401, a mounting through hole 402 is opened on the sliding seat 401 corresponding to the fixed friction pair 300, a sliding friction block 403 is installed inside the mounting through hole 402, a clamping seat 404 is fixedly installed on the outer side of the sliding seat 401 corresponding to the driving device 500, a clamping block 405 is slidably installed inside the clamping seat 404, and the detection device 600 includes a second pressure sensor 602, the second pressure sensor 602 is fixedly connected to the clamping block 405, and one end of the second pressure sensor 602 away from the clamping block 405 is fixedly connected to the driving device 500; the second pressure sensor 602 is electrically connected to the control system.

[0058] During operation, the driving device 500 is started, and its power is transmitted to the clamping seat 404 through the clamping block 405 connected to the second pressure sensor 602, thereby driving the sliding seat 401 to move. The sliding friction block 403 installed on the sliding seat 401 slides relatively on the fixed friction block 306 of the fixed friction pair 300, simulating the sliding friction process under actual working conditions.

[0059] During the sliding process, the interaction force between the driving device 500 and the sliding seat 401 is reflected as a pulling force, and the second pressure sensor 602 senses and measures the change of the pulling force in real time. The second pressure sensor 602 converts the force signal into an electrical signal and transmits it to the control system.

[0060] The control system receives data from the second pressure sensor 602, and through analysis of the pressure data, understands the resistance encountered by the driving device 500 when driving the sliding friction pair 400, and then combines other data such as the pressure applied by the loading device 200 to comprehensively evaluate the friction reduction and anti-wear performance of the lubricating oil under different working conditions.

[0061] Please refer to Figures 1 to 10 In one embodiment of the present application, the driving device 500 includes a driving motor 501, a slide rail 502 is fixedly installed on the platform 101, both ends of the slide rail 502 are fixedly connected with fixed blocks 503, a sliding block 504 is slidably connected to the slide rail 502, a driving shaft 505 that penetrates the sliding block 504 is rotatably connected between the two fixed blocks 503, the driving shaft 505 is transmission-connected to the driving motor 501, and two driving grooves 506 that are symmetrically arranged in a spiral shape are provided on the driving shaft 505, a driving shuttle 507 is rotatably connected inside the sliding block 504, and the driving shuttle 507 is slidably connected inside the driving groove 506; the driving motor 501 is electrically connected to the control system.

[0062] During operation, the control system sends a command to the drive motor 501, and the drive motor 501 starts and begins to operate, converting electrical energy into mechanical energy. The drive motor 501 drives the drive shaft 505 connected to it to rotate. The drive groove 506 symmetrically arranged on the drive shaft 505 will form a closed loop, and the drive shuttle 507 connected to the inside of the sliding block 504 will be slidably connected to the inside of the closed-loop drive groove 506. When the drive shaft 505 rotates, the spiral shape of the drive groove 506 will cause the drive shuttle 507 to make reciprocating linear motion along the drive groove 506, thereby driving the sliding block 504 to make reciprocating linear sliding on the slide rail 502. The sliding block 504 is connected to the holder 404 of the sliding friction pair 400. The linear sliding of the sliding block 504 will drive the sliding friction pair 400 to move together, so that the sliding friction block 403 on the sliding friction pair 400 slides relatively on the fixed friction block 306 of the fixed friction pair 300, thereby simulating the sliding friction scene when the lubricating oil is actually working.

[0063] Please refer to Figures 1 to 10 In one embodiment of the present application, a driving wheel 508 is fixedly mounted on the output shaft of the driving motor 501, a driven wheel 509 is mounted on the driving shaft 505 corresponding to the driving wheel 508, and a transmission belt 510 is connected to the driving wheel 508 and the driven wheel 509.

[0064] During operation, the control system sends a start command to the drive motor 501, and the drive motor 501 starts to run. Its output shaft drives the driving wheel 508 fixedly mounted thereon to rotate synchronously. At this time, the driving wheel 508 obtains the power output by the drive motor 501. When the driving wheel 508 rotates, the friction between it and the transmission belt 510 drives the transmission belt 510 to move. The transmission belt 510 contacts the driven wheel 509 and generates friction, so that the driven wheel 509 rotates with the transmission belt 510. Since the driven wheel 509 is fixedly mounted on the drive shaft 505, the rotation of the driven wheel 509 will drive the drive shaft 505 to rotate synchronously. When the transmission belt 510 transmits power between the driving wheel 508 and the driven wheel 509, it has a certain elasticity, which can buffer the vibration and impact generated during the startup and operation of the drive motor 501, reduce the impact of vibration on other components of the test bench, ensure the stability of the test bench operation, and improve the accuracy of the test data.

[0065] Please refer to Figures 1 to 10 In one embodiment of the present application, the lubricating oil supply system 700 includes an oil storage tank 701, a partition 702 is sealed and fixedly connected to the oil storage tank 701, and a test oil chamber 703 and an oil return chamber 704 are respectively formed on both sides of the partition 702. A first delivery pump 705 is fixedly connected to the inside of the cabinet 100, and the output end of the first delivery pump 705 is fixedly connected to a first oil delivery pipe 706, and the input end of the first delivery pump 705 is fixedly connected to a second oil delivery pipe 707. The end of the first oil delivery pipe 706 away from the first delivery pump 705 is sealed and connected to the oil delivery tank 312, and the second oil delivery pipe 707 is away from the first delivery pump 705. One end of the oil return pipe 708 is connected to the test oil chamber 703 in the oil storage tank 701, and a return oil pipe 708 is fixedly connected inside the cabinet 100. One end of the return oil pipe 708 is sealed and connected to the return oil hole 318 provided on the first fixed seat 301, and the other end of the return oil pipe 708 is sealed and connected to the return oil chamber 704 in the oil storage tank 701. The second oil delivery pipe 707 and the return oil pipe 708 are sealed and slidably connected with an oil tank cover 709 corresponding to the oil storage tank 701. The oil tank cover 709 is sealed and connected to the oil storage tank 701. A ventilation groove 710 is provided at a position of the partition plate 702 near the top of the oil storage tank 701, and the first delivery pump 705 is electrically connected to the control system.

[0066] During the working process, the control system sends a command to the first delivery pump 705, and the first delivery pump 705 starts. At this time, the first delivery pump 705 extracts lubricating oil from the test oil chamber 703 of the oil storage tank 701 through the second oil delivery pipe 707, and then delivers the lubricating oil to the oil delivery tank 312 through the first oil delivery pipe 706. The oil delivery tank 312 then delivers the lubricating oil to the contact surface of the fixed friction block 306 and the sliding friction block 403 through the oil delivery channel 311, the oil supply channel 308 and other structures in sequence, so as to achieve lubrication during the test process.

[0067] During the test, the lubricating oil overflowing from the friction surface will flow into the oil return groove 317 of the first fixing seat 301, then enter the oil return pipe 708 through the oil return hole 318, and finally flow back to the oil return chamber 704 of the oil storage tank 701. Since the partition 702 is provided with a venting groove 710 near the top of the oil storage tank 701, the air pressure of the test oil chamber 703 and the oil return chamber 704 is balanced, ensuring that the lubricating oil can circulate smoothly in the system.

[0068] The partition 702 separates the oil storage tank 701 into a test oil chamber 703 and an oil return chamber 704, so that the recovered lubricating oil is separated from the lubricating oil to be used, avoiding the contamination of the new oil by impurities and wear particles that may be contained in the recovered oil, and ensuring the purity of the test oil. At the same time, the oil tank cover 709 is sealed and connected to the oil storage tank 701, and is sealed and slidable on the second oil delivery pipe 707 and the oil return pipe 708 to prevent the leakage of lubricating oil and maintain the sealing of the system.

[0069] Please refer to Figures 1 to 10 In one embodiment of the present application, the temperature control system 800 includes a refrigeration box 801 and a heating box 802, the interior of the refrigeration box 801 and the interior of the heating box 802 are filled with temperature control medium, the refrigeration box 801 is fixedly connected with a refrigerator 803, the heating box 802 is fixedly connected with a heater 804, the refrigeration box 801 is respectively connected with a first electric-controlled valve 805 and a second electric-controlled valve 806, the heating box 802 is respectively connected with a third electric-controlled valve 807 and a fourth electric-controlled valve 808, a first three-way pipe 809 is connected between the first electric-controlled valve 805 and the third electric-controlled valve 807, a second three-way pipe 810 is connected between the second electric-controlled valve 806 and the fourth electric-controlled valve 808, the other end of the first three-way pipe 809 is connected with a second delivery pump 811, the first fixed seat 301 and the second fixed seat 302 are connected. Heat exchange tubes 812 are installed inside, and the two heat exchange tubes 812 are thermally connected to the fixed friction block 306 respectively. One ends of the two heat exchange tubes 812 are connected to the output ends of the second delivery pump 811 in parallel, and one ends of the two heat exchange tubes 812 away from the second delivery pump 811 are connected to the second three-way pipe 810 in parallel. Both ends of the heat exchange tubes 812 installed inside the second fixed seat 302 are connected to the second three-way pipe 810 and the second delivery pump 811 through the first telescopic pipe 813 with a sealed sliding connection. Temperature sensors are installed inside the first fixed seat 301 and the second fixed seat 302. The refrigerator 803, the heater 804, the first electric-controlled valve 805, the second electric-controlled valve 806, the third electric-controlled valve 807, the fourth electric-controlled valve 808, the second delivery pump 811 and the temperature sensor are all electrically connected to the control system.

[0070] During operation, the temperature sensors inside the first fixing seat 301 and the second fixing seat 302 monitor the temperature near the fixed friction block 306 in real time and transmit the temperature data to the control system, which compares the received temperature data with the preset test temperature.

[0071] If the monitored temperature is higher than the preset temperature, the control system controls the refrigerator 803 to start and cool the temperature control medium in the refrigeration box 801. At the same time, the first electrically controlled valve 805 and the second electrically controlled valve 806 are opened, and the third electrically controlled valve 807 and the fourth electrically controlled valve 808 are closed. The second delivery pump 811 works to extract the refrigerated temperature control medium from the refrigeration box 801 and deliver it to the heat exchange tube 812 in the first fixed seat 301 and the second fixed seat 302 through the first three-way pipe 809. The temperature control medium flows in the heat exchange tube 812, exchanges heat with the fixed friction block 306, takes away heat, and achieves cooling. Afterwards, the temperature control medium flows back to the refrigeration box 801 through the second three-way pipe 810 and the second electrically controlled valve 806 to complete the cycle.

[0072] If the monitored temperature is lower than the preset temperature, the control system controls the heater 804 to start and heat the temperature control medium in the heating box 802. At the same time, the third electrically controlled valve 807 and the fourth electrically controlled valve 808 are opened, and the first electrically controlled valve 805 and the second electrically controlled valve 806 are closed. The second delivery pump 811 works to extract the heated temperature control medium from the heating box 802 and deliver it to the heat exchange tube 812 through the first three-way pipe 809. The temperature control medium exchanges heat with the fixed friction block 306 in the heat exchange tube 812, releases heat, and achieves temperature rise. Then, the temperature control medium flows back to the heating box 802 through the second three-way pipe 810 and the fourth electrically controlled valve 808 to complete the cycle.

[0073] In a specific embodiment of the present application, the temperature control medium can be an aqueous solution (ethylene glycol aqueous solution, propylene glycol aqueous solution), heat transfer oil, etc.; for example, silicone oil. Silicone oil is similar to other refrigeration media in the refrigeration system. It absorbs heat and evaporates in the evaporator, releases heat and condenses in the refrigeration box 801, and achieves heat transfer through phase change to achieve the purpose of refrigeration. The heater 804 is used to heat the silicone oil. Due to the high boiling point and low volatility of silicone oil, it can work stably at a higher temperature and transfer heat to the heat exchange tube 812 through circulation.

[0074] Please refer to Figures 1 to 10In one embodiment of the present application, the control system includes an industrial computer and a programmable logic controller (PLC). The industrial computer is provided with a human-computer interaction interface for inputting test parameters. The loading device 200, the driving device 500, the detection device 600, the lubricating oil supply system 700, and the temperature control system 800 are electrically connected to the industrial computer and the programmable logic controller (PLC). The programmable logic controller (PLC) controls the loading device 200, the driving device 500, the lubricating oil supply system 700, and the temperature control system 800 according to the instructions sent by the industrial computer.

[0075] During the working process, the operator inputs various parameters required for the test through the human-machine interface of the industrial computer, such as the loading force, loading time and loading mode of the loading device 200; the driving speed, rotation direction and running time of the driving device 500; the oil supply amount, oil supply time and oil supply frequency of the lubricating oil supply system 700; the target temperature, temperature adjustment range and temperature control accuracy of the temperature control system 800, etc. The industrial computer processes and analyzes the test parameters input by the operator, generates corresponding control instructions, and sends these instructions to the programmable logic controller (PLC).

[0076] After receiving the instructions sent by the industrial computer, the programmable logic controller (PLC) accurately controls the loading device 200, the driving device 500, the lubricating oil supply system 700 and the temperature control system 800 according to the preset program logic. For example, the telescopic member 202 of the loading device 200 is controlled to load the fixed friction pair 300; the speed and direction of the driving motor 501 of the driving device 500 are controlled to drive the sliding friction pair 400 to move; the start and stop and flow rate of the first delivery pump 705 of the lubricating oil supply system 700 are controlled to ensure the supply of lubricating oil; the opening and closing of the refrigerator 803, the heater 804 and each electric control valve of the temperature control system 800 are controlled to adjust the test temperature.

[0077] The detection device 600 collects various data in real time during the test, such as the pressure between the loading device 200 and the fixed friction pair 300, the pressure between the sliding friction pair 400 and the driving device 500, the temperature detected by the temperature sensor, etc., and transmits these data to the industrial computer and the programmable logic controller (PLC). The industrial computer analyzes and processes the collected data and compares it with the preset parameters. If the data is found to be abnormal or deviates from the preset value, the industrial computer will generate a new control instruction and send it to the programmable logic controller (PLC) to adjust the corresponding equipment to ensure that the test is carried out within the predetermined parameter range.

[0078] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lubricating oil sliding friction test bench, characterized in that: The invention comprises a cabinet (100), wherein a platform (101) is fixedly connected to the top of the cabinet (100), a frame (102) is fixedly mounted on the platform (101), a loading device (200) is fixedly mounted on the frame (102), a fixed friction pair (300) is mounted between the loading device (200) and the platform (101), a sliding friction pair (400) is slidably connected to the fixed friction pair (300), a driving device (500) is transmission-connected to the sliding friction pair (400), and a fixed friction pair (300) is connected to the fixed friction pair (300). A lubricating oil supply system (700) and a temperature control system (800); a control system electrically connected to the loading device (200), the driving device (500), the lubricating oil supply system (700) and the temperature control system (800) is installed inside the cabinet (100); the control system is electrically connected to a detection device (600); the detection device (600) is used to detect pressure changes between the loading device (200) and the fixed friction pair (300) and between the sliding friction pair (400) and the driving device (500).

2. A lubricating oil sliding friction test bench according to claim 1, characterized in that: The loading device (200) comprises a mounting plate (201) fixedly mounted on the frame (102), a telescopic member (202) being fixedly mounted on the mounting plate (201), the detection device (600) comprising a first pressure sensor (601), one end of the first pressure sensor (601) being fixedly connected to the telescopic end of the telescopic member (202), and one end of the first pressure sensor (601) away from the telescopic member (202) being fixedly connected to the fixed friction pair (300); the telescopic member (202) and the first pressure sensor (601) are both electrically connected to the control system.

3. The lubricating oil sliding friction test bench according to claim 1, characterized in that: The fixed friction pair (300) comprises a first fixed seat (301) fixedly mounted on the platform (101); a second fixed seat (302) symmetrically arranged with the first fixed seat (301) is fixedly connected to the loading device (200); a mounting groove (303) is provided at one end of the first fixed seat (301) and the second fixed seat (302) close to each other; a mounting box (304) is installed inside the mounting groove (303); a mounting cavity (305) is provided at one end of the two mounting boxes (304) close to each other; a fixed friction block (306) is sealed and slidably connected inside the mounting cavity (305); and the sliding friction pair (400) is slidably connected to the two fixed friction blocks (306) at the same time.

4. A lubricating oil sliding friction test bench according to claim 3, characterized in that: The fixed friction block (306) is provided with a plurality of rows of through holes (307) arranged in parallel, and an oil supply channel (308) is provided inside the installation box (304) corresponding to each row of the through holes (307). An oil supply pipe (309) communicating with the oil supply channel (308) is fixedly connected to the installation box (304), and the oil supply pipe (309) is sealingly and slidably connected to the through hole (307). A pressure hole (310) communicating with the oil supply channel (308) is provided between each two of the oil supply pipes (309) on the installation box (304), and an oil supply channel (311) corresponding to the oil supply channel (308) is provided on the first fixed seat (301) and the second fixed seat (302), and the oil supply channel (311) is sealingly and correspondingly communicated with the oil supply channel (308). The first fixed seat (301) and the second fixed seat (302) are provided with a plurality of oil supply channels (311) corresponding to the oil supply channels (308). The oil supply channel (311) is sealingly and correspondingly communicated with the oil supply channel (308). An oil delivery box (312) in communication with the oil delivery channel (311) is fixedly and sealingly connected to the second fixed seat (302); the oil delivery box (312) is in sealing communication with the oil outlet end of the lubricating oil supply system (700); a valve hole (313) penetrating the oil delivery channel (311) is provided on both the first fixed seat (301) and the second fixed seat (302); a valve core (314) is sealingly and slidably connected inside the valve hole (313); a spring (315) is installed at one end of the valve core (314) away from the sliding friction pair (400); the spring (315) is used to push the valve core (314) to block the oil delivery channel (311); the valve core (314) is made of magnetic material; a magnetic strip (316) corresponding to the valve core (314) is fixedly installed on the sliding friction pair (400) along its sliding direction.

5. The lubricating oil sliding friction test bench according to claim 4, characterized in that: An oil return groove (317) is provided on the first fixing seat (301) around the mounting groove (303), and an oil return hole (318) connected to the oil return groove (317) is provided on the first fixing seat (301). The oil return hole (318) is sealed and connected to the oil return end of the lubricating oil supply system (700).

6. The lubricating oil sliding friction test bench according to claim 1, characterized in that: The sliding friction pair (400) comprises a sliding seat (401), a mounting through hole (402) is provided on the sliding seat (401) corresponding to the fixed friction pair (300), a sliding friction block (403) is installed inside the mounting through hole (402), a clamping seat (404) is fixedly installed on the outer side of the sliding seat (401) corresponding to the driving device (500), a clamping block (405) is slidably installed inside the clamping seat (404), and the detection device (600) comprises a second pressure sensor (602), the second pressure sensor (602) is fixedly connected to the clamping block (405), and one end of the second pressure sensor (602) away from the clamping block (405) is fixedly connected to the driving device (500); the second pressure sensor (602) is electrically connected to the control system.

7. The lubricating oil sliding friction test bench according to claim 1, characterized in that: The driving device (500) comprises a driving motor (501), a slide rail (502) is fixedly mounted on the platform (101), both ends of the slide rail (502) are fixedly connected with fixed blocks (503), a sliding block (504) is slidably connected to the slide rail (502), a driving shaft (505) penetrating the sliding block (504) is rotatably connected between the two fixed blocks (503), the driving shaft (505) is drivingly connected to the driving motor (501), two driving grooves (506) symmetrically arranged in a spiral shape are provided on the driving shaft (505), a driving shuttle (507) is rotatably connected inside the sliding block (504), and the driving shuttle (507) is slidably connected inside the driving groove (506); the driving motor (501) is electrically connected to the control system.

8. The lubricating oil sliding friction test bench according to claim 5, characterized in that: The lubricating oil supply system (700) comprises an oil storage tank (701), a partition (702) is sealed and fixedly connected to the oil storage tank (701), and a test oil chamber (703) and an oil return chamber (704) are respectively formed on both sides of the partition (702); a first delivery pump (705) is fixedly connected to the inside of the cabinet (100), an output end of the first delivery pump (705) is fixedly connected to a first oil delivery pipe (706), an input end of the first delivery pump (705) is fixedly connected to a second oil delivery pipe (707), an end of the first oil delivery pipe (706) away from the first delivery pump (705) is sealed and connected to the oil delivery tank (312), and an end of the second oil delivery pipe (707) away from the first delivery pump (705) is sealed and connected to the oil storage tank (701). The test oil chamber (703) is connected, an oil return pipe (708) is fixedly connected inside the cabinet (100), one end of the oil return pipe (708) is sealed and connected to the oil return hole (318) provided on the first fixing seat (301), the other end of the oil return pipe (708) is sealed and connected to the oil return chamber (704) in the oil storage tank (701), an oil tank cover (709) is sealingly and slidably connected to the second oil delivery pipe (707) and the oil return pipe (708) corresponding to the oil storage tank (701), the oil tank cover (709) is sealed and connected to the oil storage tank (701), a ventilation groove (710) is provided on the partition plate (702) near the top of the oil storage tank (701), and the first delivery pump (705) is electrically connected to the control system.

9. The lubricating oil sliding friction test bench according to claim 3, characterized in that: The temperature control system (800) comprises a refrigeration box (801) and a heating box (802), wherein the interior of the refrigeration box (801) and the interior of the heating box (802) are both filled with a temperature control medium, the refrigeration box (801) is fixedly connected to a refrigerator (803) in a heat-conducting manner, and the heating box (802) is fixedly connected to a heater (804) in a heat-conducting manner, the refrigeration box (801) is respectively connected to a first electrically controlled valve (805) and a second electrically controlled valve (806), and the heating box (802) is respectively connected to a third electrically controlled valve (807) and a fourth electrically controlled valve (808), a first three-way pipe (809) is connected between the first electrically controlled valve (805) and the third electrically controlled valve (807), a second three-way pipe (810) is connected between the second electrically controlled valve (806) and the fourth electrically controlled valve (808), and the other end of the first three-way pipe (809) is connected to a second delivery pump (811). The first fixed seat (301) and the second fixed seat (302) are both equipped with heat exchange tubes (812), the two heat exchange tubes (812) are thermally connected to the fixed friction block (306) respectively, one end of the two heat exchange tubes (812) are connected in parallel to the output end of the second delivery pump (811), and one end of the two heat exchange tubes (812) away from the second delivery pump (811) are connected in parallel to the second three-way pipe (810), the first fixed seat (301) and the second fixed seat (302) are both equipped with temperature sensors, and the refrigerator (803), the heater (804), the first electrically controlled valve (805), the second electrically controlled valve (806), the third electrically controlled valve (807), the fourth electrically controlled valve (808), the second delivery pump (811) and the temperature sensor are all electrically connected to the control system.

10. A lubricating oil sliding friction test bench according to any one of claims 1 to 9, characterized in that: The control system comprises an industrial computer and a programmable logic controller, the industrial computer being provided with a human-machine interaction interface for inputting test parameters, the loading device (200), the driving device (500), the detection device (600), the lubricating oil supply system (700), and the temperature control system (800) being electrically connected to the industrial computer and the programmable logic controller, and the programmable logic controller controlling the loading device (200), the driving device (500), the lubricating oil supply system (700), and the temperature control system (800) according to instructions sent by the industrial computer.

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