Rubber high temperature multi-angle abrasion testing machine

Abstract

The present invention belongs to the technical field of wear testing equipment, and in particular relates to a rubber high-temperature multi-angle wear testing machine, which comprises a machine base, a test box, a flywheel device, a temperature and humidity regulating device, a positioning device and a control display device; the positioning device comprises a loading fixture, an angle adjustment mechanism and a loading mechanism, the loading mechanism drives the angle adjustment mechanism to move toward the friction wheel part of the flywheel device, and the workpiece to be tested mounted on the loading fixture abuts against the flywheel device, the control display device is arranged on one side of the machine base, the control display device comprises a digital control center, a display unit, a temperature sensing unit and a force sensing unit, the display unit can feedback the temperature parameters of the test box and the pressure load parameters of the workpiece to be tested in real time, and different types can be realized on the same machine, effectively enhancing the testing function of the wear testing machine, improving the practicability of the wear testing machine, being able to fully meet the needs of users, cater to market needs, and be beneficial to enterprise development.

Description

Technical Field

[0001] The invention belongs to the technical field of abrasion testing equipment, and in particular relates to a rubber high-temperature multi-angle abrasion testing machine. Background Art

[0002] The wear performance of materials is expressed by the amount of wear or the wear index. Abrasiveness is also called wear loss. Abrasiveness is related to almost all the properties of materials, and under different wear mechanism conditions, there are different requirements for material properties to improve abrasiveness.

[0003] In order to accurately test the wear performance of materials, people have developed a wear test device specifically for detecting the wear type of materials. This test device is particularly suitable for the wear performance test field of vehicle tires.

[0004] The traditional wear testing device includes a product fixture and a flywheel. The product fixture is used to clamp the product. The friction surface formed by the rotation of the flywheel abuts the end face of the product, thereby testing the wear performance of the product. In the wear testing device for automobile tires, the positioning tire structure of the product fixture is set in a rotating shaft structure, and the tire is rotatably connected to the product fixture. In traditional wear detection, the rotating friction surface of the flywheel is generally directly abutted against the outer ring of the tire for wear testing. This structure can only perform wear tests on the end face of the wheel abutting the ground. However, different driving conditions have different temperatures, wetness, loading forces applied to the tire by the weight of the vehicle body, and contact angles between the load-bearing surface and the tire. The traditional wear testing device has a single test function, and needs to be performed on corresponding equipment with different measurement parameters for different working conditions of the wheel, which leads to troublesome operation and prolonged measurement time, affecting the efficiency of wheel detection, and is increasingly unable to meet the requirements for material wear performance detection. Summary of the invention

[0005] The purpose of the present invention is to provide a rubber high-temperature multi-angle wear testing machine, aiming to solve the technical problems in the prior art that different driving conditions have different temperatures, wetness, loading forces applied by the weight of the vehicle body on the tire, and contact angles between the load-bearing surface and the tire, and that traditional wear testing devices have a single testing function and are increasingly unable to meet the requirements of material wear performance testing.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention provides a rubber high-temperature multi-angle wear testing machine, including a machine base, a test box, a flywheel device, a temperature and humidity adjustment device, a positioning device and a control display device; the test box is arranged on the machine base, and a working cavity is arranged in the test box; the flywheel device is arranged on the machine base, and the friction wheel part of the flywheel device extends to the working cavity; the temperature and humidity adjustment device is arranged on the test box and is used to adjust the temperature of the working cavity and humidify the friction wheel part of the flywheel device; the positioning device includes a loading fixture, an angle adjustment mechanism and a loading mechanism, the loading mechanism is arranged on the machine base, the angle adjustment mechanism is arranged at the output end of the loading mechanism, the loading fixture is arranged at the output end of the angle adjustment mechanism, the loading mechanism is arranged on the outside of the test box, the output end of the loading mechanism is connected to the drive of the angle adjustment mechanism, and the output end of the loading mechanism is slidably connected to the end wall of the test box The angle adjustment mechanism is dynamically connected, the angle adjustment mechanism is located in the working cavity, the loading fixture is used to install the workpiece to be tested, the loading mechanism drives the angle adjustment mechanism to move toward the friction wheel part of the flywheel device, and the workpiece to be tested mounted on the loading fixture abuts against the friction wheel part of the flywheel device, and the angle adjustment mechanism is used to adjust the setting angle of the test workpiece relative to the end face of the friction wheel of the flywheel device; the control display device is arranged on one side of the machine base, and the control display device includes a digital control center, a display unit, a temperature sensing unit and a force sensing unit, the temperature sensing unit is arranged in the working cavity, the force sensing unit is arranged at the output end of the loading mechanism, the input end of the digital control center is electrically connected to the temperature sensing unit and the force sensing unit, and the display unit is electrically connected to the output end of the digital control center and is used to provide real-time feedback on the temperature parameters of the test box and the pressure load parameters of the workpiece to be tested.

[0007] Optionally, the temperature and humidity regulating device includes a circulating fan, a heating unit, a water sprinkling unit and a refrigeration unit, the circulating fan is arranged on the outer wall of the test box, the output end of the circulating fan extends into the working cavity, the heating unit is arranged in the working cavity and is located on one side of the output end of the circulating fan, the water sprinkling unit is arranged on the inner wall of the working cavity, the output end of the water sprinkling unit extends to one side of the friction wheel of the flywheel device, and the refrigeration unit is arranged in the machine base, and the output end of the refrigeration unit extends into the working cavity.

[0008] Optionally, the heating unit is an electric heating tube, and the number of the heating units is multiple groups. The multiple groups of heating units are laid at intervals at the output end of the circulating fan to form a heating grid structure, and the input ends of the heating unit and the circulating fan are electrically connected to the output end of the digital control center.

[0009] Optionally, the flywheel device includes a driving mechanism, a transmission mechanism and a flywheel unit, the driving mechanism is fixedly arranged in the machine base, the transmission mechanism is arranged on the machine base, the end of the transmission mechanism extends into the working cavity, and the flywheel unit is arranged at the end of the transmission mechanism extending into the working cavity, and the driving mechanism drives the flywheel unit to rotate through the transmission mechanism, so that the outer surface of the flywheel unit forms a friction surface for abutting against the workpiece to be measured.

[0010] Optionally, the transmission mechanism includes a first bracket, a second bracket, a transmission shaft and a torque sensor. The first bracket is arranged on the base and located outside the test box. The number of the second brackets is two groups, and the two groups of second brackets are fixedly arranged in the test box at intervals. The output end of the driving mechanism is arranged at the upper end of the first bracket, the transmission shaft is rotatably connected to the two groups of the second brackets, and the end of the transmission shaft extends to the outside of the test box with its back facing the second bracket. The output end of the driving mechanism is driven to connect the transmission shaft through the torque sensor, and the flywheel unit is tightly connected to the transmission shaft and located between the two groups of the second brackets.

[0011] Optionally, the driving mechanism includes a first driving motor and a synchronous transmission assembly, the first driving motor is fixedly arranged in the machine base, the synchronous transmission assembly is located on the outer wall of the machine base, the synchronous wheel of the synchronous transmission assembly is rotatably connected to the upper end of the first bracket, and the two ends of the synchronous belt of the synchronous transmission assembly are respectively connected to the synchronous wheel and the main shaft of the first driving motor.

[0012] Optionally, the angle adjustment mechanism includes a first connecting seat, a first rotating seat, a second connecting seat and a second rotating seat, the first connecting seat is fixedly set at the output end of the loading mechanism, the first connecting seat is provided with a retractable first clamping groove, the second connecting seat is provided with a retractable second clamping groove, the first rotating seat and the second rotating seat are respectively rotatably connected in the first clamping groove and the second clamping groove, the second connecting seat is fixedly set at the end of the first rotating seat, and the loading jig is set at the end of the second rotating seat.

[0013] Optionally, the rotation path of the first rotating seat and the rotation path of the second rotating seat are perpendicular to each other, the rotation path of the first rotating seat and the rotation path of the friction wheel of the flywheel device are perpendicular to each other, and the rotation path of the second rotating seat and the rotation path of the friction wheel of the flywheel device are perpendicular to each other.

[0014] Optionally, the loading mechanism includes a mounting frame, a linear assembly, a first movable seat and a second movable seat, the mounting frame is fixedly arranged on the machine base, the linear assembly is fixedly arranged on the mounting frame, the first movable seat is fixedly arranged at the output end of the linear assembly, the second movable seat is slidably connected to the mounting frame, the force sensing unit is arranged between the first movable seat and the second movable seat, the first movable seat and the second movable seat are connected via the force sensing unit, and the second movable seat is drivingly connected to the angle adjustment mechanism.

[0015] Optionally, the linear assembly includes a second drive motor, a screw pair transmission component and a guide rail, the guide rail is fixedly laid on the mounting frame, the length direction of the guide rail is set toward the test box, the first movable seat and the second movable seat are slidably connected to the guide rail, the nut of the screw pair transmission component is fixedly connected to the first movable seat, and the screw of the screw pair transmission component is rotationally connected to the output end of the second drive motor through a synchronous transmission structure.

[0016] The above one or more technical solutions in the rubber high temperature multi-angle wear tester provided by the embodiment of the present invention have at least one of the following technical effects: compared with the prior art, different driving road conditions have different temperatures, wetness, the loading force exerted on the tire by the weight of the vehicle body, and the contact angle between the bearing surface and the tire. The traditional wear test device has a single test function and is increasingly unable to meet the technical problems of material wear performance testing requirements;

[0017] The wear testing machine provided by the embodiment of the present invention adjusts the contact angle between the workpiece to be tested and the friction wheel of the flywheel device in advance through an angle adjustment mechanism, so that the wear testing machine can test the friction of the workpiece to be tested with different contact angles; applies a preset load pressure to the workpiece to be tested through a loading mechanism, so that the wear testing machine can test the friction generated by the workpiece to be tested under different load forces; controls the temperature of the test box and the humidity of the flywheel through a temperature and humidity adjustment device, so that the wear testing machine can test the friction generated by the workpiece to be tested under different temperature and humidity environments. The wear testing machine has the ability to simulate multiple types of environments, and can realize different types of friction tests of the workpiece to be tested, such as load, contact angle, temperature and contact surface humidity, on the same machine, effectively enhancing the testing function of the wear testing machine, improving the practicability of the wear testing machine, and being able to fully meet the needs of users, cater to market needs, and be beneficial to enterprise development. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative labor.

[0019] Figure 1 A schematic structural diagram of a rubber high temperature multi-angle abrasion testing machine provided in an embodiment of the present invention.

[0020] Figure 2 A front view of a flywheel device provided in an embodiment of the present invention.

[0021] Figure 3 A schematic structural diagram of a flywheel device provided in an embodiment of the present invention.

[0022] Figure 4 A schematic diagram of the structure of a positioning device provided in an embodiment of the present invention.

[0023] Figure 5 A schematic structural diagram of an angle adjustment mechanism provided in an embodiment of the present invention.

[0024] Figure 6 A front view of the angle adjustment mechanism provided in an embodiment of the present invention.

[0025] Figure 7 A schematic structural diagram of a loading mechanism provided in an embodiment of the present invention.

[0026] Figure 8 A front view of a loading mechanism provided in accordance with an embodiment of the present invention.

[0027] Among them, the reference numerals in the figure are:

[0028] 10 - base 20 - test box 30 - flywheel device

[0029] 40—positioning device 41—loading fixture 42—angle adjustment mechanism

[0030] 43 - loading mechanism 50 - force sensing unit 31 - driving mechanism

[0031] 32 - Transmission mechanism 33 - Flywheel unit 321 - First bracket

[0032] 322 - second bracket 323 - transmission shaft 324 - torque sensor

[0033] 311—first drive motor 312—synchronous transmission assembly 421—first connecting seat

[0034] 422—first rotating seat 423—second connecting seat 424—second rotating seat

[0035] 431 - mounting frame 432 - linear assembly 433 - first moving seat

[0036] 434—second moving seat 435—second driving motor 437—guide rail

[0037] 436—Screw pair transmission parts. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Figures 1 to 8 The described embodiments are exemplary and are intended to be used to explain the embodiments of the present invention, but should not be construed as limiting the present invention.

[0039] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0042] In one embodiment of the present invention, Figures 1 to 8As shown, a rubber high temperature multi-angle wear testing machine is provided, which includes a machine base 10, a test box 20, a flywheel device 30, a temperature and humidity adjustment device, a positioning device 40 and a control and display device.

[0043] The test box 20 is arranged on the machine base 10, and a working cavity is arranged in the test box 20; the flywheel device 30 is arranged on the machine base 10, and the friction wheel part of the flywheel device 30 extends to the working cavity; the temperature and humidity regulating device is arranged on the test box 20 and is used to adjust the temperature of the working cavity and humidify the friction wheel part of the flywheel device 30.

[0044] like Figures 1 to 4 As shown, the positioning device 40 includes a loading fixture 41, an angle adjustment mechanism 42 and a loading mechanism 43, the loading mechanism 43 is arranged on the machine base 10, the angle adjustment mechanism 42 is arranged at the output end of the loading mechanism 43, the loading fixture 41 is arranged at the output end of the angle adjustment mechanism 42, the loading mechanism 43 is arranged on the outside of the test box 20, the output end of the loading mechanism 43 is connected to the driving of the angle adjustment mechanism 42, the output end of the loading mechanism 43 is slidably connected to the end wall of the test box 20, the angle adjustment mechanism 42 is located in the working cavity, the loading fixture 41 is used to install the workpiece to be tested, the loading mechanism 43 drives the angle adjustment mechanism 42 to move toward the friction wheel part of the flywheel device 30, and the workpiece to be tested installed on the loading fixture 41 abuts against the friction wheel part of the flywheel device 30, and the angle adjustment mechanism is used to adjust the setting angle of the test workpiece relative to the friction wheel end face of the flywheel device 30.

[0045] The control display device is arranged on one side of the machine base 10, and the control display device includes a digital control center, a display unit, a temperature sensing unit and a force sensing unit 50. The temperature sensing unit is arranged in the working cavity, and the force sensing unit 50 is arranged at the output end of the loading mechanism 43. The input end of the digital control center is electrically connected to the temperature sensing unit and the force sensing unit 50, and the display unit is electrically connected to the output end of the digital control center and is used for real-time feedback of the temperature parameters of the test box 20 and the pressure load parameters of the workpiece to be tested. Specifically, the digital control center is a PLC-based digital control display system, and the display unit is an operation display panel and is arranged on the outer wall of the test box 20. In other embodiments, the digital control center is loaded on an independent computer, and the display unit is the display of the independent computer.

[0046] In the present embodiment, the workpiece to be inspected is a car tire made of rubber. During the use of traditional rubber car tires, the ground and the circumferential side walls of the car tires are in staggered contact. The gravity of the car body acts on the car tires, causing the car tires to follow the force and the force point of the wheel to move toward the edge of the wheel. Finally, the side edge of the wheel contacts the ground. The embodiment of the present invention provides a wear testing machine that adjusts the contact angle between the workpiece to be inspected and the friction wheel of the flywheel device 30 in advance through the angle adjustment mechanism 42, so that the wear testing machine can test the friction of the workpiece to be inspected with different contact angles.

[0047] Since automobile tires are made of rubber materials, when the vehicle body is heavy, the automobile tires will inevitably deform, which will increase the contact area between the automobile tires and the ground. The wear testing machine provided in the embodiment of the present invention applies a preset load pressure to the workpiece to be tested through the loading mechanism 43, so that the wear testing machine can test the friction generated by the workpiece to be tested under different load forces.

[0048] The road surface on which the car tires travel may be hot and dry or cold and slippery. Therefore, in response to different types of road conditions, the wear testing machine provided in the embodiment of the present invention controls the temperature of the test box 20 and the humidity of the flywheel through a temperature and humidity regulating device, so that the wear testing machine can test the friction generated by the workpiece to be tested under different temperature and humidity environments.

[0049] This abrasion testing machine has the ability to simulate multiple types of environments. Different types of friction tests of the workpiece to be tested, such as load, contact angle, temperature and contact surface humidity, can be realized on the same machine, which effectively enhances the testing function of the abrasion testing machine, improves the practicality of the abrasion testing machine, can fully meet the needs of users, cater to market needs, and is conducive to enterprise development.

[0050] In another embodiment of the present invention, the temperature and humidity regulating device includes a circulating fan, a heating unit, a water sprinkling unit and a refrigeration unit. The circulating fan is arranged on the outer wall of the test box 20, and the output end of the circulating fan extends into the working cavity. The heating unit is arranged in the working cavity and is located on one side of the output end of the circulating fan. The water sprinkling unit is arranged on the inner wall of the working cavity, and the output end of the water sprinkling unit extends to one side of the friction wheel of the flywheel device 30. The refrigeration unit is arranged in the machine base 10, and the output end of the refrigeration unit extends into the working cavity. Specifically, an air duct structure is arranged in the test box 20, and the output end of the circulating fan extends into the air duct structure. The heating unit is arranged in the air duct structure and is located at the output end of the circulating fan. The normal temperature airflow output by the circulating fan is heated by the heating unit and transported to the test box 20 by the output end of the air duct structure, thereby increasing the temperature of the entire working cavity to achieve a heating effect.

[0051] In another embodiment of the present invention, the water spraying unit includes a spray pipe, a control valve and a water storage structure, the spray pipe is connected to a water pump arranged in the water storage structure, the control valve is arranged at the output end of the water pump, the output end of the spray pipe extends to one side of the friction wheel part of the flywheel device 30 and is aligned with the friction wheel, the control valve is an electromagnetic valve, and the input end of the control valve is electrically connected to the output end of the digital control center. Specifically, the digital control center can control the water output duration and water output time point of the spray pipe through the control valve, thereby controlling the dryness and wetness of the friction wheel of the flywheel device 30.

[0052] In another embodiment of the present invention, the heating unit is an electric heating tube, and the number of the heating units is multiple groups. The multiple groups of heating units are laid at intervals at the output end of the circulating fan to form a heating grid structure. The heating unit and the input end of the circulating fan are electrically connected to the output end of the digital control center. The use of electric heating tubes with a mesh structure is beneficial to improving the heat exchange efficiency of the airflow, thereby achieving rapid heating and improving temperature regulation efficiency.

[0053] In another embodiment of the present invention, the refrigeration unit is a compressor-based refrigeration working group, which cooperates with the heating unit to keep the temperature range of the working cavity at -20°C to 80°C, and can highly simulate the icy road environment.

[0054] like Figures 2-3 As shown, in another embodiment of the present invention, the flywheel device 30 includes a driving mechanism 31, a transmission mechanism 32 and a flywheel unit 33. The driving mechanism 31 is fixedly arranged in the machine base 10, the transmission mechanism 32 is arranged on the machine base 10, the end of the transmission mechanism 32 extends into the working cavity, and the flywheel unit 33 is arranged at the end of the transmission mechanism 32 extending into the working cavity. The driving mechanism 31 drives the flywheel unit 33 to rotate through the transmission mechanism 32, so that the outer surface of the flywheel unit 33 forms a friction surface for abutting against the workpiece to be measured. Disposing the driving mechanism 31 on the outside of the test box 20 is beneficial to preventing the high temperature and high humidity environment of the test box 20 from affecting the components of the driving mechanism 31.

[0055] like Figures 2-3As shown, in another embodiment of the present invention, the transmission mechanism 32 includes a first bracket 321, a second bracket 322, a transmission shaft 323 and a torque sensor 324, the first bracket 321 is arranged on the base 10 and is located on the outside of the test box 20, the number of the second bracket 322 is two groups, and the two groups of the second brackets 322 are fixedly arranged in the test box 20 at intervals, the output end of the driving mechanism 31 is arranged on the upper end of the first bracket 321, the transmission shaft 323 is rotatably connected to the two groups of the second brackets 322, and the end of the transmission shaft 323 extends to the outside of the test box 20 away from the second bracket 322, and the output end of the driving mechanism 31 is connected to the test box 20 by the transmission shaft 323. The torque sensor 324 is driven and connected to the transmission shaft 323, and the flywheel unit 33 is tightly connected to the transmission shaft 323 and is located between the two groups of the second brackets 322. Specifically, the two ends of the torque sensor 324 are respectively connected to the output end of the driving mechanism 31 and the transmission shaft 323 through a roller chain coupling. The two groups of second brackets 322 are arranged on both sides of the friction wheel to effectively achieve the force balance of the friction wheel and prevent the friction wheel from being displaced. The friction force is numerically expressed or converted through the torque sensor 324. Specifically, when the equipment is unloaded, the digital control center records the initial torque value (deduction). When the pressure is loaded, the torque increase is the relative force between the flywheel unit 33 and the workpiece to be detected.

[0056] like Figures 2-3As shown, in another embodiment of the present invention, the driving mechanism 31 includes a first driving motor 311 and a synchronous transmission assembly 312, the first driving motor 311 is fixedly arranged in the base 10, the synchronous transmission assembly 312 is located on the outer wall of the base 10, the synchronous wheel of the synchronous transmission assembly 312 is rotatably connected to the upper end of the first bracket 321, and the two ends of the synchronous belt of the synchronous transmission assembly 312 are respectively connected to the synchronous wheel and the main shaft of the first driving motor 311. Specifically, the first driving motor 311 is a three-phase variable frequency motor. In this embodiment, the synchronous transmission assembly 312 includes a synchronous wheel, a synchronous shaft and a group of synchronous belts. The base 10 is arranged in a box-shaped structure. The driving motor 311 is fixedly arranged on the top wall of the machine base 10, and the main shaft of the first driving motor 311 extends to the outer wall of the machine base 10. The first bracket 321 is arranged at the top of the machine base 10 and is located at the edge of the machine base 10. A bearing seat is arranged on the first bracket 321. The end of the synchronous shaft is tightly connected with the inner ring of the bearing unit of the bearing seat, and the end of the synchronous shaft extends to the outside of the bearing unit. The synchronous wheel is tightly connected to the synchronous shaft. The main shaft of the first driving motor 311 is provided with an external tooth portion, and the two ends of the synchronous belt are respectively meshed with the external tooth portion and the synchronous wheel. The other end of the synchronous shaft is connected to the roller chain coupling for transmission. The overall structure is a positive-shaped structure, which is conducive to saving space and optimizing the equipment structure.

[0057] like Figures 4 to 8 As shown, in another embodiment of the present invention, the angle adjustment mechanism 42 includes a first connecting seat 421, a first rotating seat 422, a second connecting seat 423 and a second rotating seat 424, the first connecting seat 421 is fixedly provided with the output end of the loading mechanism 43, the first connecting seat 421 is provided with a retractable first clamping groove, the second connecting seat 423 is provided with a retractable second clamping groove, the first rotating seat 422 and the second rotating seat 424 are respectively rotatably connected in the first clamping groove and the second clamping groove, the second connecting seat 423 is fixedly provided at the end of the first rotating seat 422, and the loading fixture 41 is provided at the second rotating seat 424, in this embodiment, the first rotating seat 422 and the second rotating seat 424 are both arranged in a cylindrical structure, and the first clamping groove and the second clamping groove are contracted and adjusted by pre-tightening screws to adjust the groove diameter of the clamping groove. When the angle of the loading fixture 41 needs to be adjusted, the clamping groove is first loosened by the corresponding pre-tightening screw, and the first rotating seat 422 rotates a preset angle, and the second rotating seat 424 is driven to rotate through the second connecting seat 423, and the second rotating seat 424 rotates a preset angle, and the loading fixture 41 drives the product to be inspected to rotate, wherein the rotation angle range of the first rotating seat 422 and the second rotating seat 424 in this embodiment is -20° to +20°.

[0058] like Figures 4 to 8 As shown, in another embodiment of the present invention, the rotation path of the first rotating seat 422 and the rotation path of the second rotating seat 424 are perpendicular to each other, the rotation path of the first rotating seat 422 and the rotation path of the friction wheel of the flywheel device 30 are perpendicular to each other, and the rotation path of the second rotating seat 424 and the rotation path of the friction wheel of the flywheel device 30 are perpendicular to each other. Specifically, the loading fixture 41 includes a connecting plate and a loading shaft, the connecting plate is fixedly arranged at the end of the second rotating seat 424, the loading shaft is rotatably connected to the end of the connecting plate away from the second rotating seat 424, and the loading shaft is located at the intersection of the central axes of the first rotating seat 422 and the second rotating seat 424. The loading shaft in this embodiment is tightly connected to the inner ring of the automobile tire.

[0059] like Figures 4 to 8 As shown, in another embodiment of the present invention, the loading mechanism 43 includes a mounting frame 431, a linear component 432, a first movable seat 433 and a second movable seat 434, the mounting frame 431 is fixedly arranged on the machine base 10, the linear component 432 is fixedly arranged on the mounting frame 431, the first movable seat 433 is fixedly arranged at the output end of the linear component 432, the second movable seat 434 is slidably connected to the mounting frame 431, the force sensing unit 50 is arranged between the first movable seat 433 and the second movable seat 434, the first movable seat 433 and the second movable seat 434 are connected through the force sensing unit 50, the second movable seat 434 is drivingly connected to the angle adjustment mechanism 42, the force value is set by the digital control center, automatic loading is realized, the corresponding loading stroke is expressed, and the load force value and the depression deformation amount of the workpiece to be detected are fed back.

[0060] like Figures 4 to 8 As shown, in another embodiment of the present invention, the linear assembly 432 includes a second drive motor 435, a screw pair transmission component 436 and a guide rail 437, the guide rail 437 is fixedly laid on the mounting frame 431, and the length direction of the guide rail 437 is arranged toward the test box 20, the first movable seat 433 and the second movable seat 434 are slidably connected to the guide rail 437, the nut of the screw pair transmission component 436 is fixedly connected to the first movable seat 433, and the screw of the screw pair transmission component 436 is rotationally connected to the output end of the second drive motor 435 through a synchronous transmission structure. In this embodiment, the second drive motor 435 is a servo motor, and the servo motor is closed-loop controlled for loading. The load force value of the second drive motor 435 applied to the workpiece to be inspected through the second movable seat 434 is in the range of 0 to 200 kg.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rubber high temperature multi-angle wear testing machine, characterized in that: include: Machine base; A test box, arranged on the machine base, wherein a working cavity is arranged in the test box; A flywheel device, disposed on the machine base, wherein the friction wheel portion of the flywheel device extends to the working cavity; A temperature and humidity regulating device, disposed on the test box and used to regulate the temperature of the working cavity and humidify the friction wheel portion of the flywheel device; A positioning device, comprising a loading fixture, an angle adjustment mechanism and a loading mechanism, wherein the loading mechanism is arranged on the machine base, the angle adjustment mechanism is arranged at the output end of the loading mechanism, the loading fixture is arranged at the output end of the angle adjustment mechanism, the loading mechanism is arranged outside the test box, the output end of the loading mechanism is connected to the driving of the angle adjustment mechanism, the output end of the loading mechanism is slidably connected to the end wall of the test box, the angle adjustment mechanism is located in the working cavity, the loading fixture is used to install a workpiece to be tested, the loading mechanism drives the angle adjustment mechanism to move toward the friction wheel part of the flywheel device, and the workpiece to be tested mounted on the loading fixture abuts against the friction wheel part of the flywheel device, and the angle adjustment mechanism is used to adjust the setting angle of the test workpiece relative to the end face of the friction wheel of the flywheel device; A control display device is arranged on one side of the machine base, and the control display device includes a digital control center, a display unit, a temperature sensing unit and a force sensing unit. The temperature sensing unit is arranged in the working cavity, and the force sensing unit is arranged at the output end of the loading mechanism. The input end of the digital control center is electrically connected to the temperature sensing unit and the force sensing unit. The display unit is electrically connected to the output end of the digital control center and is used for real-time feedback of the temperature parameters of the test box and the pressure load parameters of the workpiece to be tested. The temperature and humidity regulating device comprises a circulation fan, a heating unit, a water sprinkling unit and a refrigeration unit, wherein the circulation fan is arranged on the outer side wall of the test box, and the output end of the circulation fan extends into the working cavity, the heating unit is arranged in the working cavity and is located on one side of the output end of the circulation fan, the water sprinkling unit is arranged on the inner wall of the working cavity, and the output end of the water sprinkling unit extends to one side of the friction wheel of the flywheel device, and the refrigeration unit is arranged in the machine base, and the output end of the refrigeration unit extends into the working cavity; The flywheel device comprises a driving mechanism, a transmission mechanism and a flywheel unit, wherein the driving mechanism is fixedly arranged in the machine base, the transmission mechanism is arranged on the machine base, an end of the transmission mechanism extends into the working cavity, and the flywheel unit is arranged at an end of the transmission mechanism extending into the working cavity, and the driving mechanism drives the flywheel unit to rotate through the transmission mechanism, so that the outer surface of the flywheel unit forms a friction surface for abutting against the workpiece to be measured; The angle adjustment mechanism comprises a first connecting seat, a first rotating seat, a second connecting seat and a second rotating seat, the first connecting seat is fixedly provided with an output end of the loading mechanism, the first connecting seat is provided with a retractable first clamping groove, the second connecting seat is provided with a retractable second clamping groove, the first rotating seat and the second rotating seat are rotatably connected in the first clamping groove and the second clamping groove respectively, the second connecting seat is fixedly provided at an end of the first rotating seat, and the loading fixture is provided at an end of the second rotating seat; The loading mechanism comprises a mounting frame, a linear assembly, a first movable seat and a second movable seat, wherein the mounting frame is fixedly arranged on the machine base, the linear assembly is fixedly arranged on the mounting frame, the first movable seat is fixedly arranged at the output end of the linear assembly, the second movable seat is slidably connected to the mounting frame, the force sensing unit is arranged between the first movable seat and the second movable seat, the first movable seat and the second movable seat are connected via the force sensing unit, and the second movable seat is drivingly connected to the angle adjustment mechanism; The transmission mechanism includes a first bracket, a second bracket, a transmission shaft and a torque sensor. The first bracket is arranged on the base and located outside the test box. The number of the second brackets is two groups, and the two groups of second brackets are fixedly arranged in the test box at intervals. The output end of the driving mechanism is arranged on the upper end of the first bracket, the transmission shaft is rotatably connected to the two groups of the second brackets, and the end of the transmission shaft extends to the outside of the test box with its back facing the second bracket. The output end of the driving mechanism is driven and connected to the transmission shaft through the torque sensor, and the flywheel unit is tightly connected to the transmission shaft and located between the two groups of the second brackets.

2. The rubber high temperature multi-angle wear testing machine according to claim 1, characterized in that: The heating unit is an electric heating tube, and the number of the heating units is multiple groups. The multiple groups of heating units are laid at intervals at the output end of the circulating fan to form a heating power grid structure. The input ends of the heating unit and the circulating fan are both electrically connected to the output end of the digital control center.

3. The rubber high temperature multi-angle wear testing machine according to claim 1, characterized in that: The driving mechanism includes a first driving motor and a synchronous transmission assembly. The first driving motor is fixedly arranged in the machine base. The synchronous transmission assembly is located on the outer wall of the machine base. The synchronous wheel of the synchronous transmission assembly is rotatably connected to the upper end of the first bracket. The two ends of the synchronous belt of the synchronous transmission assembly are respectively connected to the synchronous wheel and the main shaft of the first driving motor.

4. The rubber high temperature multi-angle wear testing machine according to claim 1, characterized in that: The rotation path of the first rotating seat and the rotation path of the second rotating seat are perpendicular to each other, the rotation path of the first rotating seat and the rotation path of the friction wheel of the flywheel device are perpendicular to each other, and the rotation path of the second rotating seat and the rotation path of the friction wheel of the flywheel device are perpendicular to each other.

5. The rubber high temperature multi-angle wear testing machine according to claim 1, characterized in that: The linear assembly includes a second drive motor, a screw pair transmission component and a guide rail, the guide rail is fixedly laid on the mounting frame, the length direction of the guide rail is arranged toward the test box, the first movable seat and the second movable seat are slidably connected to the guide rail, the nut of the screw pair transmission component is fixedly connected to the first movable seat, and the screw of the screw pair transmission component is rotationally connected to the output end of the second drive motor through a synchronous transmission structure.

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