A Visual Multifunctional Friction and Wear Tester

Abstract

The present invention relates to a visual multi-functional friction and wear testing machine, belonging to the technical field of friction and wear testing. The friction and wear testing machine 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, a speed tester and a driving module are respectively arranged on both sides of the test module, the test module includes an openable and closable shell, an observation window and a camera are arranged on the outer wall of the shell, testers can most intuitively understand the friction and wear conditions of test specimens through the observation window, at the same time, the camera collects the friction and wear images of the test specimens in real time and displays them through the display module, which is convenient for testers to view, improves the visualization level, discovers potential hidden dangers in time, and provides a scientific basis for analyzing the failure and service life of test specimens; the cooling device prevents the test specimens and various components of the friction and wear testing machine from overheating, keeps the circumferential temperature inside the shell stable, and improves the accuracy of the friction and wear test results of the test specimens.

Description

Technical Field

[0001] The present invention belongs to the technical field of friction and wear testing, and particularly relates to a visual multi-functional friction and wear testing machine. Background Art

[0002] With the progress of modern science and technology, the friction and wear testing technology is also developing rapidly. Friction is a very common and unavoidable phenomenon. Severe friction will cause wear of materials, resulting in fatigue phenomena, greatly affecting the service life of products, and even posing great potential hazards to personal safety. Therefore, the friction performance of different materials needs to be accurately detected and verified.

[0003] The existing friction and wear test devices are based on the principle of rotational motion, and achieve precise relative motion between the pin and the disc surface to simulate the friction and wear process of different materials in the actual working environment. The friction and wear test device can simulate the tool cutting or bearing mating operation process, and scientifically study the friction and wear performance of multiple mating methods through experimental methods. It can be used to evaluate the friction and wear performance of materials such as lubricants, metals, resins, coatings, and ceramics under higher linear velocity conditions. The friction pair forms are mainly point-to-surface and surface-to-surface contact friction. The friction and wear test device can perform reciprocating sliding friction, "8"-shaped sliding friction, and four-ball long-time sliding friction, etc.

[0004] The existing friction and wear test devices have the following disadvantages:

[0005] 1. Due to the small mechanical size, in the environment of high-speed operation, the vibration phenomenon is relatively serious, affecting the working stability.

[0006] 2. During the test process, the visualization degree is low, and it is difficult to discover potential hazards.

[0007] 3. Lack of a good temperature control system, which is prone to overheating, low cooling efficiency, etc. Summary of the Invention

[0008] Based on the problems existing in the above background art, the present invention proposes a visual multi-functional friction and wear testing machine, which solves the problems of low visualization degree of the existing friction and wear test devices, difficulty in discovering potential hazards, lack of a good temperature control system, unstable temperature, easy overheating, low cooling efficiency, and inaccurate test results.

[0009] The embodiments of the present invention are implemented as follows:

[0010] The embodiments of the present invention provide a visual multi-functional friction and wear testing machine, which includes a base, a console, a cooling device, and a display module; a test module is provided on the upper end surface of the base, and a speed tester and a driving module are respectively provided on both sides of the test module;

[0011] The test module includes an openable and closable housing. The bottom of the housing is fixedly connected to the upper end surface of the base. An observation window and a camera are provided on the outer wall of the housing. A specimen fixture and a friction disc assembly are provided inside the housing. One side of the specimen 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.

[0012] The observation direction of the observation window and the shooting direction of the camera are both set towards the test specimen.

[0013] The console is arranged on the side wall of the base. The console includes a controller, a start switch, an emergency switch and a control switch that are electrically connected to each other. The speed tester and the drive module are both electrically connected to the controller. The start switch, the emergency switch and the control switch are all electrically connected to the speed tester and the drive module.

[0014] 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 inside the housing, and the temperature sensor is electrically connected to the controller through a temperature control circuit.

[0015] The camera, the temperature sensor, the speed tester and the drive module are all electrically connected to the display module through the controller.

[0016] The basic principle of the visual multi-functional friction and wear testing machine in the present invention is as follows: When a friction and wear test needs to be carried out on a test specimen, first open the housing, install and fix the test specimen on the specimen fixture, and make the test specimen contact with 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 frictions the test specimen. At the same time, due to the transmission of the frictional force, the rotational torque will be transmitted through the test specimen to the specimen fixture, causing the specimen fixture to rotate accordingly. The speed tester collects the rotational speed information of the specimen fixture and the test specimen thereon. The tester can most intuitively understand the friction and wear situation of the test specimen through the observation window. At the same time, the camera real-time collects the friction and wear images of the test specimen and displays them through the display module, which is convenient for the tester to view, improves the visualization level, discovers potential hidden dangers in time, and provides a scientific basis for analyzing the failure and service life of the test specimen. The temperature sensor real-time collects the temperature information data inside the housing and uploads the collected data to the controller and the display module in real time. When the controller finds that the temperature inside the housing exceeds the preset temperature, it starts the cooling source to deliver the cooling medium into the housing, avoiding overheating of the test specimen and each component of the friction and wear testing machine, maintaining the circumferential temperature stability inside the housing, and improving the accuracy of the friction and wear test results of the test specimen. It solves the problems of low visualization degree of the existing friction and wear test device, difficulty in discovering potential hidden dangers, lack of a good temperature control system, unstable temperature, easy overheating, low cooling efficiency, and inaccurate test results.

[0017] As an alternative solution to the above embodiment, the base is in a cuboid structure, and an anti-slip foot pad is provided at each of the four corners of the bottom of the base. By fixedly connecting the anti-slip foot pads at the bottom of the base, the friction between the base and the ground is increased, thereby reducing the vibration of the entire visual multi-functional friction and wear testing machine and improving the working stability of the visual multi-functional friction and wear testing machine.

[0018] As an alternative solution to the above embodiment, a workpiece storage space is provided inside the base, and a box door communicating with the workpiece storage space is provided on the side wall of the base. The workpiece storage space can store the assembly and maintenance tools of the visual multi-functional friction and wear testing machine or different types of specimen fixtures. The assembly and maintenance tools facilitate the tester to assemble and disassemble the visual multi-functional friction and wear testing machine, and different types of specimen fixtures meet the friction and wear tests of different test specimens.

[0019] As an alternative to the above embodiments, the housing includes a lower housing, an upper housing, and a connecting hinge. The lower housing has a hollow rectangular parallelepiped structure with an opening at the top. The upper housing has a semi-circular 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 disposed on the top of the lower housing. The connecting hinge is connected to one side of the lower housing and the upper housing. Both the observation window and the camera are disposed on the upper housing. Circular notches are provided on both side walls of the lower housing and the upper housing for the input shaft of the speed tester and the output shaft of the drive module to pass through. The lower housing and the upper housing are connected by the connecting hinge, enabling the entire housing to be opened or closed, facilitating the placement of the specimen fixture, the friction disc assembly, and the test specimen inside the housing. Preferably, in order to lock the lower housing and the upper housing after the housing is closed, a lock catch and a lock plate can be respectively provided on the lower housing and the upper housing.

[0020] As an alternative to the above embodiments, the specimen fixture includes a fixture support plate. A transmission plate is detachably connected to one side surface of the fixture support plate. Two fixing blocks are horizontally and spaced apart on the other side surface of the fixture support plate.

[0021] A connecting member is protrudingly provided on the outer side surface of the transmission plate. The input shaft of the speed tester passes through the side wall of the housing and is fixedly connected to the connecting member.

[0022] One clamping block is connected to the end of each fixing block through a threaded fastener. A fixing groove adapted to the shape of the test specimen is provided between the fixing block and the clamping block. By tightening the threaded fastener, the test specimen is fixed in the fixing groove, thereby fixing the test specimen on the specimen fixture.

[0023] As an alternative to the above embodiments, the friction disc assembly includes a support disc disposed on one side of the specimen fixture. A friction disc is detachably connected to the end surface of the support disc close to the specimen fixture. One end surface of the friction disc is used to contact the test specimen. A support seat is protrudingly provided on the other side surface of the support disc. Both the support disc and the friction disc have a disc structure. The support seat has a cylindrical structure. A closed installation groove is circumferentially provided on the outer circumferential wall of the support seat. The support disc, the friction disc, and the support seat are coaxially arranged and a circular hole is provided through the centers 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 fit.

[0024] Specifically, the working principle of the friction disc assembly is as follows: The drive module drives the support disc to rotate. Since the friction disc is fixedly connected to the support disc, the friction disc is driven to rotate to conduct a friction and wear test on the test specimen. Preferably, the installation groove is rotationally matched with the circular notch, enabling the entire friction disc assembly to rotate stably, accurately ensuring the rotation accuracy, and completing high-speed movement.

[0025] As an alternative to 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 housing, and the self-increasing liquid nitrogen tank and the self-increasing alcohol tank are respectively communicated with the liquid nitrogen inlet and the alcohol inlet through pipelines; the controller controls the liquid inflow of the self-increasing liquid nitrogen tank and the self-increasing alcohol tank according to the internal temperature information data of the housing collected by the temperature sensor. In this embodiment, liquid nitrogen mixed with alcohol is selected as the cooling source. The settings of the liquid nitrogen inlet and the alcohol inlet enable liquid nitrogen and alcohol to fully contact. Liquid nitrogen will quickly evaporate, improving the cooling efficiency. A large amount of heat is absorbed during the evaporation process of liquid nitrogen and alcohol, resulting in a decrease in the temperature of the surrounding environment, so that stable cooling performance can be maintained within a wider temperature range. The mixed cooling medium can better absorb and carry away heat during the friction process, effectively reducing the temperature of the friction surface, reducing thermal damage and wear, and improving the service life of the friction and wear testing machine.

[0026] As an alternative to the above embodiment, the connecting member has a cylindrical structure. A connecting groove with a flat structure is recessed on the outer end face of the connecting member. The input shaft of the speed tester has a flat structure and is located in the connecting groove. A threaded hole communicating with the connecting groove is provided on the circumferential outer wall of the connecting member, and a locking bolt is threadedly connected in the threaded hole. The locking bolt is used to lock the input shaft of the speed tester.

[0027] As an alternative to the above embodiment, the visual multi-functional friction and wear testing machine further includes a salt spray module. The salt spray module includes a mounting bracket. A box body is provided on the mounting bracket. The top of the box body is detachably provided with a box cover. A salt spray machine is provided inside the box body. The salt spray machine conveys an inorganic salt gas-liquid mixture to the housing through a pipeline to simulate the wear conditions of test specimens under different environments and realize multi-faceted detection of test specimens.

[0028] As an alternative to the above embodiment, the driving module includes a driving box provided on the upper end face of the base. A driving motor and a power supply that are electrically connected to each other are provided inside 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 disk by means of keyway fit.

[0029] The beneficial effects of the present invention are as follows: 1. A visual multi-functional friction and wear testing machine provided by the present invention can most intuitively understand the friction and wear conditions of test specimens through the observation window. At the same time, the camera collects the friction and wear images of the test specimens in real time and displays them through the display module, which is convenient for 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 test specimens.

[0030] 2. A visual multi-functional friction and wear testing machine provided by the present invention can keep the circumferential temperature inside the housing stable, avoid overheating of the test specimen and each component of the friction and wear testing machine, and improve the accuracy of the friction and wear test results of the test specimen.

[0031] 3. A visual multi-functional friction and wear testing machine provided by the present invention is provided with a mounting groove that rotatably cooperates with the circular notch in the friction disc assembly. When the driving module drives the support disc to rotate, the entire friction disc assembly rotates stably, accurately ensuring the rotation accuracy and completing high-speed movement.

[0032] 4. A visual multi-functional friction and wear testing machine provided by the present invention is provided with a salt spray module for delivering an inorganic salt gas-liquid mixture to the housing, simulating the wear conditions of the test specimen under different environments, and realizing multi-faceted detection of the test specimen. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. As shown in the drawings, the above-mentioned and other objects, features, and advantages of the present invention will become clearer. The same reference numerals indicate the same parts in all the drawings. The drawings are not deliberately drawn to scale in actual size, and the focus is on showing the gist of the present invention.

[0034] Figure 1 It is a three-dimensional structural schematic diagram of a visual multi-functional friction and wear testing machine of the present invention.

[0035] Figure 2 It is a three-dimensional structural schematic diagram of the test module.

[0036] Figure 3 It is a three-dimensional structural schematic of the specimen fixture Figure 1 .

[0037] Figure 4 It is a three-dimensional structural schematic of the specimen fixture Figure 2 .

[0038] Figure 5 It is a three-dimensional structural schematic diagram of the friction disc assembly.

[0039] Figure 6 It is a three-dimensional structural schematic diagram of the salt spray module.

[0040] Among them, 1. Base; 2. Console; 3. Display module; 4. Test module; 41. Housing; 411. Lower housing; 412. Upper housing; 413. Connecting hinge; 42. Specimen fixture; 421. Fixture support plate; 422. Transmission plate; 423. Fixed block; 424. Connector; 425. Clamping block; 426. Fixed groove; 43. Friction disc assembly; 431. Support disc; 432. Friction disc; 433. Support seat; 434. Installation groove; 5. Speed tester; 6. Driving 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. Installation bracket; 132. Box body; 133. Box cover. Detailed implementation manners

[0041] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated herein generally may be arranged and designed in a variety of different configurations.

[0042] 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 claimed present invention, but is merely representative of selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0043] It should be noted that: like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0044] In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0045] For the first embodiment, please refer to Figure 1 and Figure 2 As shown, the first embodiment of the present invention provides a visual multi-functional friction and wear testing machine, which includes a base 1, a console 2, a cooling device and a display module 3; specifically, the base 1 has a cuboid structure, and anti-slip foot pads 8 are provided at the four corners of the bottom of the base 1. By fixedly connecting the anti-slip foot pads 8 to the bottom of the base 1, the friction between the base 1 and the ground is increased, thereby reducing the vibration of the entire visual multi-functional friction and wear testing machine and improving the working stability of the visual multi-functional friction and wear testing machine.

[0046] Preferably but not limited thereto, a workpiece storage space is provided inside the base 1, and a box door 9 communicating with the workpiece storage space is provided on the side wall of the base 1. The workpiece storage space can store the assembly and repair tools of the visual multi-functional friction and wear testing machine or different types of specimen jigs 42. The assembly and repair tools facilitate the testers to assemble and disassemble the visual multi-functional friction and wear testing machine, and different types of specimen jigs 42 meet the friction and wear tests of different test specimens.

[0047] A test module 4 is provided on the upper end surface of the base 1. A speed tester 5 and a drive module 6 are respectively provided on both sides of the test module 4; the test module 4 includes an openable and closable housing 41. Specifically, as a specific setting method of the openable and closable housing 41, the housing 41 includes a lower housing 411, an upper housing 412 and a connecting hinge 413. The lower housing 411 has a hollow cuboid structure with an opening at the top. The upper housing 412 has an opening at the bottom and a semi-circular housing 41 structure with a closed top. The bottom of the lower housing 411 is fixedly connected to the upper end surface of the base 1. The upper housing 412 is arranged on the top of the lower housing 411. The connecting hinge 413 is connected to one side of the lower housing 411 and the upper housing 412; circular notches 10 for the input shaft of the speed tester 5 and the output shaft of the drive module 6 to pass through are provided on both side walls of the lower housing 411 and the upper housing 412. The lower housing 411 and the upper housing 412 are connected by the connecting hinge 413, so that the entire housing 41 can be opened or closed, facilitating the specimen jig 42, the friction disc assembly 43 and the test specimen to be placed in the housing 41; preferably, in order to lock the lower housing 411 and the upper housing 412 after the housing 41 is closed, a lock catch and a lock plate can be respectively provided on the lower housing 411 and the upper housing 412.

[0048] The observation window and the camera are both provided on the upper housing 412; a specimen jig 42 and a friction disc assembly 43 are provided inside the housing 41. One side of the specimen jig 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.

[0049] The observation direction of the observation window and the shooting direction of the camera are both set towards the test specimen; specifically, the observation window is a rectangular observation area, and a PVC transparent plate is provided inside the observation window. While ensuring that personnel can observe the state of the test specimen, 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 images to the display module 3 to monitor the state of the visual multi-functional friction and wear testing machine in real time, complete the supervision of both personnel and machines, and improve the visualization level.

[0050] The console 2 is arranged on the side wall of the base 1. The console 2 includes a controller, a start switch, an emergency switch, and a control switch that 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 all electrically connected to the speed tester 5 and the drive module 6.

[0051] The cooling device includes a cooling source 7 and a temperature sensor. The cooling source 7 is communicated with the housing 41 through a pipeline. The temperature sensor is arranged inside the housing 41, and the temperature sensor is electrically connected to the controller through a temperature control circuit. The camera, the temperature sensor, the speed tester 5, and the drive module 6 are all electrically connected to the display module 3 through the controller.

[0052] 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 arranged at the top and bottom of the housing 41. The self-increasing liquid nitrogen tank and the self-increasing alcohol tank are communicated with the liquid nitrogen inlet and the alcohol inlet through pipelines respectively. The controller controls the liquid inlet amounts of the self-increasing liquid nitrogen tank and the self-increasing alcohol tank according to the internal temperature information data of the housing 41 collected by the temperature sensor. In this embodiment, the cooling source 7 selects a mixture of liquid nitrogen and alcohol for cooling. The settings of the liquid nitrogen inlet and the alcohol inlet enable the liquid nitrogen and the alcohol to fully contact. The liquid nitrogen will quickly evaporate, improving the cooling efficiency. A large amount of heat is absorbed during the evaporation process of the liquid nitrogen and the alcohol, resulting in a decrease in the temperature of the surrounding environment, so that stable cooling performance can be maintained within a wider temperature range. The mixed cooling medium can better absorb and carry away heat during the friction process, effectively reducing the temperature of the friction surface, reducing thermal damage and wear, and improving the service life of the friction and wear testing machine.

[0053] The basic principle of the visual multifunctional friction and wear testing machine in the present invention is as follows: When a friction and wear test needs to be carried out on a test specimen, first open the housing 41, install and fix the test specimen on the specimen fixture 42, and make the test specimen contact the friction disc assembly 43. Then, start the speed tester 5 and the drive module 6 through the console 2. The drive module 6 drives the friction disc assembly 43 to rotate, and frictional force is applied to the test specimen. At the same time, due to the transmission of frictional force, the rotational torque will be transmitted to the specimen fixture 42 through the test specimen, causing the specimen fixture 42 to rotate accordingly. The speed tester 5 collects the rotational speed information of the specimen fixture 42 and the test specimen thereon. The tester can most intuitively understand the friction and wear situation of the test specimen through the observation window. 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 tester to view, improves the visualization level, discovers potential hidden dangers in time, and provides a scientific basis for analyzing the failure and service life of the test specimen. The temperature sensor collects the internal temperature information data of the housing 41 in real time and uploads the collected data to the controller and the display module 3 in real time. When the controller finds that the internal temperature of the housing 41 exceeds the preset temperature, it starts the cooling source 7 to deliver the cooling medium into the housing 41, avoiding overheating of the test specimen and each component of the friction and wear testing machine, maintaining the stability of the circumferential temperature inside the housing 41, and improving the accuracy of the friction and wear test results of the test specimen. This solves the problems of low visualization degree of the existing friction and wear test device, difficulty in discovering potential hidden dangers, lack of a good temperature control system, unstable temperature, easy overheating, low cooling efficiency, and inaccurate test results.

[0054] The second embodiment is as Figures 1 to 5 shown. The second embodiment of the present invention provides a visual multifunctional friction and wear testing machine. This testing machine is further limited on the basis of the first embodiment. The improvement lies in how to specifically set the test module 4, the specimen 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.

[0055] As Figure 3 and Figure 4 shown, the specimen fixture 42 includes a fixture support plate 421. One side surface of the fixture support plate 421 is detachably connected with a transmission plate 422. Specifically, a plurality of through holes can be opened on the fixture support plate 421 and the transmission plate 422, and bolts are arranged in the plurality of through holes to realize the detachable connection between the fixture support plate 421 and the transmission plate 422. Two fixing blocks 423 are horizontally arranged at intervals on the other side surface of the fixture support plate 421. Specifically, the fixing blocks 423 can be fixedly connected to the other side surface of the fixture support plate 421 by opening through holes on the rear end surfaces of the fixing blocks 423 and arranging bolts in the through holes.

[0056] A connecting member 424 is protrudingly provided 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 housing 41 and is fixedly connected to the connecting member 424; specifically, the connecting member 424 has a cylindrical structure, and a connecting groove 11 with a flat structure is recessed on the outer end surface of the connecting member 424. The input shaft of the speed tester 5 has a flat structure and is located in the connecting groove 11. A threaded hole 12 communicating with the connecting groove 11 is provided on the circumferential outer wall of the connecting member 424, and a locking bolt is threadedly connected in the threaded hole 12 for locking the input shaft of the speed tester 5.

[0057] One clamping block 425 is connected to the end of each fixing block 423 through 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 specimen fixture 42.

[0058] As Figure 5 shown, the friction disc assembly 43 includes a support disc 431 provided on one side of the specimen fixture 42. A friction disc 432 is detachably connected to the end surface of the support disc 431 close to the specimen fixture 42. One side end surface of the friction disc 432 is used to contact the test specimen. A support seat 433 is protrudingly provided on the other side surface of the support disc 431; both the support disc 431 and the friction disc 432 have a disc structure, and the support seat 433 has a cylindrical structure. A closed installation groove 434 is circumferentially provided on the circumferential outer wall of the support seat 433. The support disc 431, the friction disc 432 and the support seat 433 are coaxially arranged and a circular hole is penetrated through the centers 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 means of keyway fit.

[0059] Specifically, the working principle of the friction disc assembly 43 is: 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 installation groove 434 is rotationally matched with the circular notch 10, so that the entire friction disc assembly 43 rotates stably, and the rotation accuracy can be accurately guaranteed to complete high-speed movement.

[0060] The driving module 6 includes a driving box arranged on the upper end surface of the base 1. A driving motor and a power supply which are electrically connected to each other are arranged in the driving box. The driving motor is electrically connected to the controller. The output shaft of the driving motor is fixedly connected to the support disk 431 in a keyway fit manner. Specifically, the power supply selects a 0 - 380V wide-range programmable DC power supply with a maximum output power of 12000w to supply power to the driving motor. The above driving motor is a brushless DC motor with a rated voltage of 380v, a maximum speed of 10000 revolutions per minute, and a maximum power of 12000w. The outer diameter of the driving motor is 170mm. The above 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 rotation speed of the driving motor can be achieved.

[0061] For the structures not mentioned in this embodiment, reference can be made to the prior art or the first embodiment, etc.

[0062] The third embodiment of the present invention provides a visual multi-functional friction and wear testing machine. This testing machine is further limited on the basis of the second embodiment. The testing machine further includes a salt spray module 13. For other parts not mentioned, reference can be made to the first and second embodiments or the prior art.

[0063] As Figure 1 and Figure 6 shown, the visual multi-functional friction and wear testing machine further includes a salt spray module 13. The salt spray module 13 includes a mounting bracket 131. A box body 132 is arranged on the mounting bracket 131. The top of the box body 132 is detachably provided with a box cover 133. A salt spray machine electrically connected to the power supply is arranged inside the box body 132. The salt spray machine conveys an inorganic salt gas-liquid mixture to the housing 41 through a pipeline, so as to simulate the wear conditions of test specimens under different environments and realize multi-faceted detection of test specimens. The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A visual multi-functional friction and wear testing machine, characterized in that, It includes a base, a 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 respectively arranged on both sides of the test module; The test module includes an openable and closable housing. The bottom of the housing 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 housing. A specimen fixture and a friction disc assembly are arranged inside the housing. One side of the specimen fixture is used for clamping a 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 for contacting the test specimen, and the other side is fixedly connected to the output shaft of the driving module; The observation direction of the observation window and the shooting direction of the camera are both set towards the test specimen; The console is arranged on the side wall of the base. The console includes a controller, a start switch, an emergency switch and a control switch that are electrically connected to each other; both the speed tester and the driving module are electrically connected to the controller; the start switch, the emergency switch and the control switch are both connected to the speed tester and the driving module; The cooling device includes a cooling source and a temperature sensor. The cooling source is communicated with the housing through a pipeline. The temperature sensor is arranged inside the housing, and the temperature sensor is electrically connected to the controller through a temperature control circuit; The camera, the temperature sensor, the speed tester and the driving module are all electrically connected to the display module through the controller; A workpiece storage space is arranged inside the base, and a box door communicated with the workpiece storage space is arranged on the side wall of the base; The housing includes a lower housing, an upper housing and a connecting hinge. The lower housing has a hollow cuboid structure with an opening at the top. The upper housing has a semi-circular 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. 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; circular notches for the input shaft of the speed tester and the output shaft of the driving module to pass through are opened on both side walls of the lower housing and the upper housing; The specimen 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 arranged at intervals on the other side surface of the fixture support plate; A connecting piece is convexly arranged on the outer side surface of the transmission plate. The input shaft of the speed tester passes through the side wall of the housing and is fixedly connected to the connecting piece; Each end of the fixing block is connected with a clamping block through a threaded fastener, and a fixing groove adapted to the shape of the test specimen is arranged between the fixing block and the clamping block; The friction disc assembly includes a support disc arranged on one side of the specimen fixture. A friction disc is detachably connected to one end surface of the support disc close to the specimen fixture. One end surface of the friction disc is used for contacting the test specimen, and a support seat is convexly arranged on the other side surface of the support disc; Both the support disc and the friction disc are in a disc structure, the support seat is in a cylindrical structure, a closed installation groove 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 through the centers of the three; the output shaft of the driving module passes through the circular hole and is fixedly connected with the support disc by means of keyway fit; The installation groove is in rotational fit with the circular notch.

2. The visualized multi-functional friction and wear testing machine according to claim 1, characterized in that The base is in a cuboid structure, and an anti-slip foot 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 1, characterized in that The cooling source includes a self-increasing liquid nitrogen tank and a self-increasing alcohol tank; a liquid nitrogen inlet and an alcohol inlet are respectively arranged at the top and the bottom of the housing, and the self-increasing liquid nitrogen tank and the self-increasing alcohol tank are communicated with the liquid nitrogen inlet and the alcohol inlet respectively through pipelines; the controller controls the liquid inlet amounts of the self-increasing liquid nitrogen tank and the self-increasing alcohol tank according to the internal temperature information data of the housing collected by the temperature sensor.

4. The visual multi-functional friction and wear testing machine according to claim 1, characterized in that The connecting piece is in a cylindrical structure, a flat connecting groove is recessed on the outer side end face of the connecting piece, the input shaft of the speed tester is in a flat structure and is located in the connecting groove, a threaded hole communicated with the connecting groove is arranged on the circumferential outer wall of the connecting piece, and a locking bolt is in threaded connection in the threaded hole and is used for locking the input shaft of the speed tester.

5. The visual multi-functional friction and wear testing machine according to claim 1, characterized in that, It further includes a salt spray module, the salt spray module includes an installation bracket, a box body is arranged on the installation 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 conveys an inorganic salt gas-liquid mixture to the housing through a pipeline.

6. The visual multi-functional friction and wear testing machine according to claim 1, characterized in that, The driving module includes a driving box arranged on the upper end face of the base, a driving motor and a power supply which are electrically connected to each other are arranged inside the driving box, the driving motor is electrically connected to the controller, and the output shaft of the driving motor is fixedly connected with the support disc by means of keyway fit.

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