Visual multifunctional friction-wear testing machine

Abstract

The invention relates to a visual multifunctional friction-wear testing machine, and belongs to the technical field of friction-wear testing. The friction-wear testing machine comprises a base, a console, a cooling device and a display module, a test module is arranged on the upper end face of the base, a speed tester and a driving module are arranged on the two sides of the test module respectively, the test module comprises a shell capable of being opened and closed, an observation window and a camera are arranged on the outer wall of the shell, and a tester can most visually know the frictional wear condition of a test piece through the observation window; meanwhile, the camera collects a frictional wear image of the test piece in real time, and the frictional wear image is displayed through the display module, so that a tester can check the frictional wear image conveniently, the visualization level is improved, potential hazards are found in time, and a scientific basis is provided for analyzing the failure and the service life of the test piece; the cooling device prevents the test piece and each part of the friction-wear testing machine from being overheated, the annular temperature in the shell is kept stable, and the accuracy of the friction-wear test result of the test piece is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of friction and wear testing, and in particular relates to a visual multifunctional friction and wear testing machine. Background Art

[0002] With the advancement of modern science and technology, friction and wear testing technology is also developing rapidly. Friction is a very common and unavoidable phenomenon. Severe friction can cause material wear and fatigue, greatly affecting the service life of the product and even causing great hidden dangers to personal safety. Therefore, the friction properties of different materials need to be accurately tested and verified.

[0003] The friction and wear test device in the prior art is based on the principle of rotational motion. It simulates the friction and wear process of different materials in the actual working environment by realizing the precise relative motion between the pin and the disc surface. The friction and wear test device can simulate the tool cutting or bearing pair operation process, and scientifically study the friction and wear performance of multiple pairing modes through experimental methods. It can be used to evaluate the friction and wear performance of lubricants, metals, resins, coatings, ceramics and other materials under high linear speed conditions. The friction pair form is mainly point-to-surface and surface-to-surface contact friction. The friction and wear test device can perform reciprocating sliding friction, "8" sliding friction and four-ball long-term sliding friction.

[0004] Disadvantages of existing friction and wear testing devices: 1. Due to the small size of the machine, the vibration phenomenon is more serious in a high-speed operation environment, affecting the working stability.

[0005] 2. The level of visualization during the test is low, making it difficult to detect potential hazards.

[0006] 3. Lack of a good temperature control system can easily lead to overheating and low cooling efficiency. Summary of the invention

[0007] Based on the problems existing in the above-mentioned background technology, the present invention proposes a visual multifunctional friction and wear testing machine, which solves the problems of low visualization of existing friction and wear testing devices, difficulty in discovering potential hidden dangers, lack of a good temperature control system, unstable temperature, easy to cause overheating, low cooling efficiency, and inaccurate test results.

[0008] The embodiment of the present invention is achieved as follows: The embodiment of the present invention provides a visual multifunctional friction and wear testing machine, which includes a base, a control console, a cooling device and a display module; a test module is arranged on the upper end surface of the base, and a speed tester and a driving module are arranged on both sides of the test module; The test module comprises an openable and closable shell, the bottom of which is fixedly connected to the upper end surface of the base, an observation window and a camera are arranged on the outer wall of the shell, and a sample fixture and a friction disc assembly are arranged inside the shell, one side of the sample fixture is used to clamp the test specimen, and the other side is fixedly connected to the input shaft of the speed tester; one side of the friction disc assembly is used to contact the test specimen, and the other side is fixedly connected to the output shaft of the drive module; The observation direction of the observation window and the shooting direction of the camera are both arranged toward the test specimen; The console is arranged on the side wall of the base, and includes a controller, a start switch, an emergency switch and a control switch which are electrically connected to each other; the speed tester and the drive module are electrically connected to the controller; the start switch, the emergency switch and the control switch are electrically connected to the speed tester and the drive module; The cooling device includes a cooling source and a temperature sensor, the cooling source is connected to the housing through a pipeline, the temperature sensor is arranged in the housing, and the temperature sensor is electrically connected to the controller through a temperature control circuit; The camera, temperature sensor, speed tester and driving module are all electrically connected to the display module through a controller.

[0009] The basic principle of the visualized multifunctional friction and wear testing machine in the present invention is: when it is necessary to conduct a friction and wear test on the test specimen, first open the shell, install and fix the test specimen on the sample fixture, and let the test specimen contact the friction disc assembly, then start the speed tester and the drive module through the console, the drive module drives the friction disc assembly to rotate, and rubs the test specimen. At the same time, due to the transmission of friction force, the rotational torque will be transmitted to the sample fixture through the test specimen, causing the sample fixture to rotate accordingly, and the speed tester collects rotational speed information of the sample fixture and the test specimen thereon; the test personnel can most intuitively understand the friction and wear conditions of the test specimen through the observation window, and at the same time, the camera collects the friction and wear images of the test specimen in real time and displays them through the display module, which is convenient for the test personnel to view, improve the visualization level, and timely discover potential hidden dangers, providing a scientific basis for analyzing the failure and service life of the test specimen. The temperature sensor collects the temperature information data inside the shell in real time and uploads the collected data to the controller and display module in real time. When the controller finds that the temperature inside the shell exceeds the preset temperature, it starts the cooling source to transport the cooling medium into the shell to avoid overheating of the test specimen and various components of the friction and wear tester, keep the circumferential temperature inside the shell stable, and improve the accuracy of the friction and wear test results of the test specimen. It solves the problems of low visualization of existing friction and wear test devices, difficulty in discovering potential hidden dangers, lack of a good temperature control system, unstable temperature, easy to cause overheating, low cooling efficiency, and inaccurate test results.

[0010] As an optional solution of the above embodiment, the base is a rectangular parallelepiped structure, and a non-slip pad is provided at each of the four corners of the bottom of the base. The non-slip pad is fixedly connected to the bottom of the base to increase the friction between the base and the ground, thereby reducing the vibration of the entire visual multifunctional friction and wear tester and improving the working stability of the visual multifunctional friction and wear tester.

[0011] As an optional solution of the above embodiment, a workpiece storage space is provided inside the base, and a box door connected to the workpiece storage space is provided on the side wall of the base. The workpiece storage space can store assembly and maintenance tools of the visual multifunctional friction and wear tester or different types of sample fixtures. The assembly and maintenance tools facilitate the test personnel to assemble and disassemble the visual multifunctional friction and wear tester, and different types of sample fixtures meet the friction and wear tests of different test specimens.

[0012] As an optional solution of the above embodiment, the housing includes a lower housing, an upper housing and a connecting hinge, the lower housing is a hollow rectangular parallelepiped structure with an opening at the top, the upper housing is a semicircular housing structure with an opening at the bottom and a closed top, the bottom of the lower housing is fixedly connected to the upper end surface of the base, the upper housing is arranged on the top of the lower housing, and the connecting hinge is connected to one side of the lower housing and the upper housing; the observation window and the camera are both arranged on the upper housing; the side walls of the lower housing and the upper housing are both provided with circular notches for the input shaft of the speed tester and the output shaft of the driving module to pass through. The lower housing and the upper housing are connected by the connecting hinge, so that the entire housing can be opened or closed, which is convenient for placing the sample fixture, the friction disc assembly and the test specimen in the housing; preferably, in order to achieve the locking between the lower housing and the upper housing after the housing is closed, a lock buckle and a lock plate can be respectively provided on the lower housing and the upper housing.

[0013] As an optional solution of the above embodiment, the sample fixture includes a fixture support plate, a transmission plate is detachably connected to one side surface of the fixture support plate, and two fixing blocks are horizontally spaced apart on the other side surface of the fixture support plate; A connecting piece is protruded on the outer side surface of the transmission plate, and the input shaft of the speed tester passes through the side wall of the housing and is fixedly connected to the connecting piece; The end of each of the fixing blocks is connected to a clamp block through a threaded fastener, and a fixing groove adapted to the shape of the test specimen is provided between the fixing block and the clamp block. By tightening the threaded fastener, the test specimen is fixed in the fixing groove, and the test specimen is fixed on the sample fixture.

[0014] As an optional solution of the above embodiment, the friction disc assembly includes a support disc arranged on one side of the sample fixture, a friction disc is detachably connected on the end face of the support disc on one side close to the sample fixture, one end face of the friction disc is used to contact the test specimen, and a support seat is convexly arranged on the side face of the other side of the support disc; the support disc and the friction disc are both disc structures, the support seat is a cylindrical structure, a circle of closed mounting grooves is circumferentially arranged on the circumferential outer wall of the support seat, the support disc, the friction disc and the support seat are coaxially arranged and a circular hole is penetrated at the center of the three; the output shaft of the drive module passes through the circular hole and is fixedly connected to the support disc by keyway matching; Specifically, the working principle of the friction disc assembly is: the driving module drives the support disc to rotate, and because the friction disc and the support disc are fixedly connected, the friction disc is driven to rotate to perform a friction and wear test on the test specimen. Preferably, the mounting groove and the circular notch are rotatably matched, so that the entire friction disc assembly rotates stably, the rotation accuracy can be accurately guaranteed, and high-speed movement can be completed.

[0015] As an optional scheme of the above embodiment, the cooling source includes a self-increasing liquid nitrogen tank and a self-increasing alcohol tank; considering that the density of alcohol is less than that of liquid nitrogen, a liquid nitrogen inlet and an alcohol inlet are respectively provided at the top and bottom of the shell, and the self-increasing liquid nitrogen tank and the self-increasing alcohol tank are respectively connected to the liquid nitrogen inlet and the alcohol inlet through pipelines; the controller controls the liquid inlet of the self-increasing liquid nitrogen tank and the self-increasing alcohol tank according to the temperature information data of the shell internal temperature collected by the temperature sensor. In this embodiment, the cooling source selects liquid nitrogen mixed with alcohol for cooling, and the setting of the liquid nitrogen inlet and the alcohol inlet allows the liquid nitrogen to fully contact with the alcohol, and the liquid nitrogen will evaporate quickly, thereby improving the cooling efficiency. A large amount of heat is absorbed during the evaporation of liquid nitrogen and alcohol, resulting in a decrease in the temperature of the surrounding environment, thereby being able to maintain stable cooling performance within a wider temperature range. The mixed cooling medium can better absorb and take away heat during the friction process, effectively reduce the temperature of the friction surface, reduce thermal damage and wear, and increase the service life of the friction and wear testing machine.

[0016] As an optional scheme for the above embodiment, the connecting member is of a cylindrical structure, and a connecting groove of a flat structure is recessed on the outer end face of the connecting member. The input shaft of the speed tester is of a flat structure and is located in the connecting groove. A threaded hole connected to the connecting groove is provided on the circumferential outer wall of the connecting member, and a locking bolt is threadedly connected to the threaded hole. The locking bolt is used to lock the input shaft of the speed tester.

[0017] As an optional scheme of the above embodiment, the visual multifunctional friction and wear testing machine also includes a salt spray module, which includes a mounting bracket, a box body is arranged on the mounting bracket, a box cover is detachably arranged on the top of the box body, and a salt spray machine is arranged inside the box body. The salt spray machine transports an inorganic salt gas-liquid mixture to the shell through a pipeline, so as to simulate the wear conditions of the test specimens under different environments and realize multi-faceted detection of the test specimens.

[0018] As an optional solution to the above embodiment, the driving module includes a driving box arranged on the upper end surface of the base, and a driving motor and a power supply electrically connected to each other are arranged in the driving box. The driving motor is electrically connected to the controller, and the output shaft of the driving motor is fixedly connected to the support plate by means of a keyway.

[0019] The beneficial effects of the present invention are: 1. A visual multifunctional friction and wear testing machine provided by the present invention can most intuitively understand the friction and wear conditions of the test specimen through the observation window. At the same time, the camera can collect the friction and wear images of the test specimen in real time and display them through the display module, which is convenient for test personnel to view, improves the visualization level, and promptly discovers potential hidden dangers, providing a scientific basis for analyzing the failure and service life of the test specimen.

[0020] 2. The present invention provides a visual multifunctional friction and wear testing machine, which is configured to maintain a stable circumferential temperature inside the shell to avoid overheating of the test specimen and various components of the friction and wear testing machine, thereby improving the accuracy of the friction and wear test results of the test specimen.

[0021] 3. The present invention provides a visual multifunctional friction and wear testing machine, which provides a mounting groove that rotatably cooperates with the circular notch in the friction disc assembly. When the driving module drives the supporting disc to rotate, the entire friction disc assembly rotates stably, and the rotation accuracy can be accurately guaranteed to complete high-speed movement.

[0022] 4. The present invention provides a visualized multifunctional friction and wear testing machine, which simulates the wear conditions of the test specimens under different environments and realizes multi-faceted detection of the test specimens by arranging a salt spray module for conveying an inorganic salt gas-liquid mixture to the shell. 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 is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. As shown in the accompanying drawings, the above and other purposes, features and advantages of the present invention will be clearer. The same reference numerals in all the drawings indicate the same parts. The drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of a visualized multifunctional friction and wear testing machine of the present invention.

[0025] Figure 2 Schematic diagram of the three-dimensional structure of the test module.

[0026] Figure 3 Schematic diagram of the three-dimensional structure of the sample fixture Figure 1 .

[0027] Figure 4 Schematic diagram of the three-dimensional structure of the sample fixture Figure 2 .

[0028] Figure 5 Schematic diagram of the three-dimensional structure of the friction disc assembly.

[0029] Figure 6 Schematic diagram of the three-dimensional structure of the salt spray module.

[0030] Among them, 1. base; 2. control console; 3. display module; 4. test module; 41. shell; 411. lower shell; 412. upper shell; 413. connecting hinge; 42. sample fixture; 421. fixture support plate; 422. transmission plate; 423. fixing block; 424. connecting piece; 425. clamping block; 426. fixing groove; 43. friction disc assembly; 431. support disc; 432. friction disc; 433. support seat; 434. mounting groove; 5. speed tester; 6. drive module; 7. cooling source; 8. anti-slip foot pad; 9. box door; 10. circular notch; 11. connecting groove; 12. threaded hole; 13. salt spray module; 131. mounting bracket; 132. box body; 133. box cover. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0035] For the first embodiment, please refer to Figure 1 and Figure 2 As shown, the first embodiment of the present invention provides a visual multifunctional friction and wear tester, which includes a base 1, a control console 2, a cooling device and a display module 3; specifically, the base 1 is a rectangular parallelepiped structure, and a non-slip foot pad 8 is provided at each of the four corners of the bottom of the base 1. The non-slip foot pad 8 is fixedly connected to the bottom of the base 1 to increase the friction between the base 1 and the ground, thereby reducing the vibration of the entire visual multifunctional friction and wear tester and improving the working stability of the visual multifunctional friction and wear tester.

[0036] Preferably, but not limited to, a workpiece storage space is provided inside the base 1, and a box door 9 connected to the workpiece storage space is provided on the side wall of the base 1. The workpiece storage space can store assembly and maintenance tools of the visual multifunctional friction and wear tester or different types of sample fixtures 42. The assembly and maintenance tools facilitate the test personnel to assemble and disassemble the visual multifunctional friction and wear tester, and different types of sample fixtures 42 meet the friction and wear tests of different test specimens.

[0037] A test module 4 is arranged on the upper end face of the base 1, and a speed tester 5 and a driving module 6 are arranged on both sides of the test module 4 respectively; the test module 4 includes an openable and closable shell 41, specifically, as a specific setting mode of the openable and closable shell 41, the shell 41 includes a lower shell 411, an upper shell 412 and a connecting hinge 413, the lower shell 411 is a hollow rectangular parallelepiped structure with an opening at the top, the upper shell 412 is a semicircular shell 41 structure with an opening at the bottom and a closed top, the bottom of the lower shell 411 is fixedly connected to the upper end face of the base 1, the upper shell 412 is arranged on the top of the lower shell 411, and the connecting hinge 413 is connected to one side of the lower shell 411 and the upper shell 412; circular notches 10 for the input shaft of the speed tester 5 and the output shaft of the driving module 6 to pass through are opened on both side walls of the lower shell 411 and the upper shell 412. The lower shell 411 and the upper shell 412 are connected by a connecting hinge 413, so that the entire shell 41 can be opened or closed, which is convenient for placing the sample fixture 42, the friction disc assembly 43 and the test specimen in the shell 41; preferably, in order to achieve locking between the lower shell 411 and the upper shell 412 after the shell 41 is closed, a lock buckle and a lock plate can be respectively provided on the lower shell 411 and the upper shell 412.

[0038] The observation window and the camera are both arranged on the upper shell 412; a sample fixture 42 and a friction disc assembly 43 are arranged inside the shell 41, one side of the sample fixture 42 is used to clamp the test specimen, and the other side is fixedly connected to the input shaft of the speed tester 5; one side of the friction disc assembly 43 is used to contact the test specimen, and the other side is fixedly connected to the output shaft of the drive module 6.

[0039] The observation direction of the observation window and the shooting direction of the camera are both set toward the test specimen; specifically, the observation window is a rectangular observation area, and a PVC transparent plate is set in the observation window, which ensures that personnel can observe the state of the test specimen, and the excellent strength and corrosion resistance of the PVC plate also provide protection for the safety of the staff. The camera is a process camera, which uploads the recorded image to the display module 3, so as to monitor the state of the multifunctional friction and wear testing machine in real time, complete the monitoring of both personnel and machines, and improve the level of visualization.

[0040] The console 2 is arranged on the side wall of the base 1, and the console 2 includes a controller, a start switch, an emergency switch and a control switch which are electrically connected to each other; the speed tester 5 and the drive module 6 are both electrically connected to the controller; the start switch, the emergency switch and the control switch are both electrically connected to the speed tester 5 and the drive module 6.

[0041] The cooling device includes a cooling source 7 and a temperature sensor. The cooling source 7 is connected to the shell 41 through a pipeline. The temperature sensor is arranged in the shell 41. The temperature sensor is electrically connected to the controller through a temperature control circuit. The camera, temperature sensor, speed tester 5 and drive module 6 are all electrically connected to the display module 3 through the controller.

[0042] Specifically, the cooling source 7 includes a self-increasing liquid nitrogen tank and a self-increasing alcohol tank; considering that the density of alcohol is less than that of liquid nitrogen, a liquid nitrogen inlet and an alcohol inlet are respectively provided at the top and bottom of the shell 41, and the self-increasing liquid nitrogen tank and the self-increasing alcohol tank are respectively connected to the liquid nitrogen inlet and the alcohol inlet through pipelines; the controller controls the liquid inlet of the self-increasing liquid nitrogen tank and the self-increasing alcohol tank according to the internal temperature information data of the shell 41 collected by the temperature sensor. In this embodiment, the cooling source 7 selects liquid nitrogen mixed with alcohol for cooling, and the setting of the liquid nitrogen inlet and the alcohol inlet allows the liquid nitrogen to fully contact with the alcohol, and the liquid nitrogen will evaporate quickly, thereby improving the cooling efficiency. The liquid nitrogen and alcohol absorb a large amount of heat during the evaporation process, resulting in a decrease in the temperature of the surrounding environment, thereby being able to maintain stable cooling performance within a wider temperature range. The mixed cooling medium can better absorb and take away heat during the friction process, effectively reduce the temperature of the friction surface, reduce thermal damage and wear, and increase the service life of the friction and wear testing machine.

[0043] The basic principle of the visualized multifunctional friction and wear testing machine in the present invention is as follows: when a friction and wear test is required for a test specimen, first open the shell 41, install and fix the test specimen on the sample fixture 42, and allow the test specimen to contact the friction disc assembly 43, then start the speed tester 5 and the drive module 6 through the control console 2, the drive module 6 drives the friction disc assembly 43 to rotate, and rubs the test specimen. At the same time, due to the transmission of friction force, the rotational torque will be transmitted to the sample fixture 42 through the test specimen, causing the sample fixture 42 to rotate accordingly, and the speed tester 5 collects the rotational speed information of the sample fixture 42 and the test specimen thereon; the test personnel can most intuitively understand the friction and wear conditions of the test specimen through the observation window, and at the same time, the camera collects the friction and wear images of the test specimen in real time and displays them through the display module 3, which is convenient for the test personnel to view, improves the visualization level, and timely discovers potential hidden dangers, providing a scientific basis for analyzing the failure and service life of the test specimen. The temperature sensor collects the temperature information data inside the shell 41 in real time and uploads the collected data to the controller and display module 3 in real time. When the controller finds that the temperature inside the shell 41 exceeds the preset temperature, it starts the cooling source 7 to transport the cooling medium into the shell 41 to avoid overheating of the test specimen and various components of the friction and wear tester, keep the circumferential temperature inside the shell 41 stable, and improve the accuracy of the friction and wear test results of the test specimen. The existing friction and wear test device has low visualization, difficulty in discovering potential hidden dangers, lack of a good temperature control system, unstable temperature, easy to cause overheating, low cooling efficiency, and inaccurate test results.

[0044] The second embodiment, as Figure 1~Figure 5 As shown, the second embodiment of the present invention provides a visual multifunctional friction and wear testing machine, which is further limited on the basis of the first embodiment. The improvement lies in how to specifically set the test module 4, the sample fixture 42, the friction disc assembly 43 and the drive module 6. For other parts not mentioned, please refer to the first embodiment or the prior art.

[0045] like Figure 3 and Figure 4 As shown, the sample fixture 42 includes a fixture support plate 421, and a transmission plate 422 is detachably connected to one side of the fixture support plate 421. Specifically, multiple through holes can be opened on the fixture support plate 421 and the transmission plate 422, and bolts are arranged in the multiple through holes to achieve detachable connection between the fixture support plate 421 and the transmission plate 422. Two fixing blocks 423 are arranged horizontally at intervals on the other side of the fixture support plate 421; specifically, a through hole can be opened on the rear end surface of the fixing block 423 and a bolt can be arranged in the through hole to achieve fixed connection between the fixing block 423 and the other side of the fixture support plate 421.

[0046] A connecting piece 424 is protruded on the outer side surface of the transmission plate 422, and the input shaft of the speed tester 5 passes through the side wall of the shell 41 and is fixedly connected to the connecting piece 424; specifically, the connecting piece 424 is a cylindrical structure, and a connecting groove 11 with a flat structure is recessed on the outer end face of the connecting piece 424. The input shaft of the speed tester 5 is a flat structure and is located in the connecting groove 11. A threaded hole 12 connected to the connecting groove 11 is provided on the circumferential outer wall of the connecting piece 424, and a locking bolt is threadedly connected to the inner thread of the threaded hole 12. The locking bolt is used to lock the input shaft of the speed tester 5.

[0047] The end of each of the fixing blocks 423 is connected to a clamping block 425 via a threaded fastener, and a fixing groove 426 adapted to the shape of the test specimen is provided between the fixing block 423 and the clamping block 425. By tightening the threaded fastener, the test specimen is fixed in the fixing groove 426, and the test specimen is fixed on the sample fixture 42.

[0048] like Figure 5 As shown, the friction disc assembly 43 includes a support disc 431 arranged on one side of the sample fixture 42, and a friction disc 432 is detachably connected to the end face of the support disc 431 on one side close to the sample fixture 42, and one end face of the friction disc 432 is used to contact the test specimen, and a support seat 433 is convexly provided on the side surface of the other side of the support disc 431; the support disc 431 and the friction disc 432 are both disc structures, and the support seat 433 is a cylindrical structure, and a circle of closed mounting grooves 434 are circumferentially provided on the circumferential outer wall of the support seat 433, and the support disc 431, the friction disc 432 and the support seat 433 are coaxially arranged and a circular hole is provided through the center of the three; the output shaft of the driving module 6 passes through the circular hole and is fixedly connected to the support disc 431 by keyway matching.

[0049] Specifically, the working principle of the friction disc assembly 43 is as follows: the driving module 6 drives the support disc 431 to rotate, and since the friction disc 432 is fixedly connected to the support disc 431, the friction disc 432 is driven to rotate to perform a friction and wear test on the test specimen. Preferably, the mounting groove 434 is rotationally matched with the circular notch 10, so that the entire friction disc assembly 43 rotates stably, the rotation accuracy can be accurately guaranteed, and high-speed movement can be completed.

[0050] The driving module 6 includes a driving box arranged on the upper end surface of the base 1, and a driving motor and a power supply electrically connected to each other are arranged in the driving box. The driving motor is electrically connected to the controller, and the output shaft of the driving motor is fixedly connected to the support plate 431 by keyway matching. Specifically, the power supply uses a 0-380V wide range programmable DC power supply with a maximum output power of 12000w to power the driving motor. The driving motor adopts a DC brushless motor with a rated voltage of 380v, a maximum speed of 10,000 rpm, and a maximum power of 12000w, and the outer diameter of the driving motor is 170mm. The driving motor uses a PWM (pulse width modulation) signal as a medium, and the chip used is HEF4752V. By accurately adjusting the duty cycle of the PWM signal in real time, flexible and accurate control of the driving motor speed can be achieved.

[0051] For structures not mentioned in this embodiment, reference may be made to the prior art or the first embodiment.

[0052] The third embodiment, the third embodiment of the present invention provides a visual multifunctional friction and wear testing machine, which is further limited on the basis of the second embodiment. The testing machine also includes a salt spray module 13. For other parts not mentioned, please refer to the first and second embodiments or the prior art.

[0053] like Figure 1 and Figure 6 As shown, the visual multifunctional friction and wear testing machine also includes a salt spray module 13, and the salt spray module 13 includes a mounting bracket 131, and a box 132 is arranged on the mounting bracket 131. The top of the box 132 is detachably provided with a box cover 133, and a salt spray machine electrically connected to a power supply is arranged inside the box 132. The salt spray machine conveys an inorganic salt gas-liquid mixture to the shell 41 through a pipeline, which is used to simulate the wear of the test specimen under different environments and realize various detections of the test specimen. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A visual multifunctional friction and wear testing machine, characterized in that: It includes a base, a control console, a cooling device and a display module; the upper end surface of the base is provided with a test module, and the two sides of the test module are respectively provided with a speed tester and a driving module; The test module comprises an openable and closable shell, the bottom of which is fixedly connected to the upper end surface of the base, an observation window and a camera are arranged on the outer wall of the shell, and a sample fixture and a friction disc assembly are arranged inside the shell, one side of the sample fixture is used to clamp the test specimen, and the other side is fixedly connected to the input shaft of the speed tester; one side of the friction disc assembly is used to contact the test specimen, and the other side is fixedly connected to the output shaft of the drive module; The observation direction of the observation window and the shooting direction of the camera are both arranged toward the test specimen; The console is arranged on the side wall of the base, and includes a controller, a start switch, an emergency switch and a control switch which are electrically connected to each other; the speed tester and the drive module are electrically connected to the controller; the start switch, the emergency switch and the control switch are electrically connected to the speed tester and the drive module; The cooling device includes a cooling source and a temperature sensor, the cooling source is connected to the housing through a pipeline, the temperature sensor is arranged in the housing, and the temperature sensor is electrically connected to the controller through a temperature control circuit; The camera, temperature sensor, speed tester and driving module are all electrically connected to the display module through a controller.

2. The visual multifunctional friction and wear testing machine according to claim 1, characterized in that: The base is in a rectangular structure, and a non-slip pad is arranged at each of the four corners of the bottom of the base.

3. The visual multifunctional friction and wear testing machine according to claim 2, characterized in that: A workpiece storage space is arranged inside the base, and a box door communicating with the workpiece storage space is arranged on the side wall of the base.

4. The visual multifunctional friction and wear testing machine according to claim 1, characterized in that: The shell includes a lower shell, an upper shell and a connecting hinge. The lower shell is a hollow rectangular structure with an opening on the top, and the upper shell is a semicircular shell structure with an opening on the bottom and a closed top. The bottom of the lower shell is fixedly connected to the upper end surface of the base, and the upper shell is arranged on the top of the lower shell. The connecting hinge is connected to one side of the lower shell and the upper shell; the observation window and the camera are both arranged on the upper shell; circular notches are provided on the side walls of the lower shell and the upper shell for the input shaft of the speed tester and the output shaft of the drive module to pass through.

5. The visual multifunctional friction and wear testing machine according to claim 4, characterized in that: The sample fixture comprises a fixture support plate, a transmission plate is detachably connected to one side surface of the fixture support plate, and two fixing blocks are horizontally spaced apart on the other side surface of the fixture support plate; A connecting piece is protruded on the outer side surface of the transmission plate, and the input shaft of the speed tester passes through the side wall of the housing and is fixedly connected to the connecting piece; The end of each of the fixing blocks is connected to a clamping block via a threaded fastener, and a fixing groove matching the shape of the test specimen is provided between the fixing block and the clamping block.

6. The visual multifunctional friction and wear testing machine according to claim 5, characterized in that: The friction disc assembly comprises a support disc arranged on one side of the sample fixture, a friction disc is detachably connected to an end surface of the support disc on one side close to the sample fixture, one end surface of the friction disc is used to contact the test specimen, and a support seat is convexly arranged on the side surface of the other side of the support disc; The support disc and the friction disc are both disc structures, the support seat is a cylindrical structure, a circle of closed mounting grooves are circumferentially arranged on the circumferential outer wall of the support seat, the support disc, the friction disc and the support seat are coaxially arranged, and a circular hole is penetrated at the center of the three; the output shaft of the drive module passes through the circular hole and is fixedly connected to the support disc by means of keyway matching; The mounting groove is rotatably matched with the circular notch.

7. The visual multifunctional friction and wear testing machine according to claim 1, characterized in that: The cooling source includes a self-enhancing liquid nitrogen tank and a self-enhancing alcohol tank; a liquid nitrogen inlet and an alcohol inlet are respectively provided at the top and the bottom of the shell, and the self-enhancing liquid nitrogen tank and the self-enhancing alcohol tank are respectively connected to the liquid nitrogen inlet and the alcohol inlet through pipelines; the controller controls the liquid inlet amount of the self-enhancing liquid nitrogen tank and the self-enhancing alcohol tank according to the internal temperature information data of the shell collected by the temperature sensor.

8. The visual multifunctional friction and wear testing machine according to claim 5, characterized in that: The connecting piece is of cylindrical structure, and a connecting groove of flat structure is recessed on the outer end surface of the connecting piece. The input shaft of the speed tester is of flat structure and is located in the connecting groove. A threaded hole connected to the connecting groove is provided on the circumferential outer wall of the connecting piece. A locking bolt is threadedly connected in the threaded hole, and the locking bolt is used to lock the input shaft of the speed tester.

9. The visual multifunctional friction and wear testing machine according to claim 1, characterized in that: It also includes a salt spray module, which includes a mounting bracket, a box body is arranged on the mounting bracket, a box cover is detachably arranged on the top of the box body, a salt spray machine is arranged inside the box body, and the salt spray machine transports an inorganic salt gas-liquid mixture to the shell through a pipeline.

10. The visual multifunctional friction and wear testing machine according to claim 6, characterized in that: The driving module includes a driving box arranged on the upper end surface of the base, wherein a driving motor and a power supply electrically connected to each other are arranged in the driving box, the driving motor is electrically connected to the controller, and the output shaft of the driving motor is fixedly connected to the supporting plate by keyway engagement.

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