Tire testing device and method compatible with testing of inner and outer surface properties of a rotating drum

Abstract

The present application belongs to the technical field of tire testing device, and particularly relates to a tire testing device compatible with inner and outer surface performance testing of a drum, comprising a device platform for fixing and mounting the remaining mechanisms; a drum mechanism arranged on the device platform for simulating different road surface loads and rotating speeds applied to a test tire; and a tire loading mechanism in contact with the inner or outer surface of the drum mechanism of the drum mechanism and movably arranged above the device platform for loading and posture conversion of the test tire. The present application provides a tire testing device compatible with inner and outer surface performance testing of a drum, which can effectively improve the compatibility of the testing device, reduce the manufacturing cost of the equipment, effectively improve the disassembly and assembly efficiency and simplicity of the test tire, and further effectively improve the overall test efficiency of the testing device. The present application also provides a tire testing method compatible with inner and outer surface performance testing of a drum, which can effectively improve the test efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tire testing device, and particularly relates to a tire testing device and method compatible with inner and outer surface performance testing of a rotating drum. BACKGROUND

[0002] The dynamic testing of an aviation tire is one of the important subjects for studying the performance of the aviation tire, mainly studies the dynamic performance of the aviation tire under various postures and working conditions under different pavements and different environments, verifies the performance of the tire by analyzing the testing results, and optimizes the design, improves and optimizes the performance of the tire.

[0003] The existing flywheel outer edge testing technology is convenient for the installation and replacement of the tire, but since the pavement generally bears a load of dozens of tons and the flywheel is used for testing at a high speed, the pavement is generally difficult to be stably fixed on the outer edge of the flywheel, and when the simulation test is performed, there is a great safety risk. Although the existing flywheel inner edge testing technology can effectively ensure the safety during the test, when the tire needs to be replaced or loaded, the tire is often difficult to be disassembled and assembled due to the shielding of the rotating drum, thereby affecting the convenience of disassembling and assembling the tire and the maintenance of the equipment, and reducing the testing efficiency of the equipment.

[0004] Therefore, it is of great significance to design a technology which can effectively take into account the functions and advantages of the above two types of equipment and overcome the defects of the above two types of equipment for the testing of the performance of the tire. SUMMARY

[0005] In order to solve the problems of the prior art, the application provides a tire testing device compatible with inner and outer surface performance testing of a rotating drum, a tire loading mechanism can be movably abutted with the inner surface or the outer surface of the rotating drum according to actual testing needs, and the tire loading mechanism can meet the conversion of different installation postures of the test tire and the rotating drum, can effectively improve the compatibility of the testing device, can reduce the manufacturing cost of the testing equipment due to the special type and special use, and can improve the efficiency and convenience of disassembling and assembling the test tire, thereby effectively improving the overall testing efficiency of the testing device. The application also provides a tire testing method suitable for the tire testing device compatible with inner and outer surface performance testing of a rotating drum, and the testing method is simple and efficient, and can effectively improve the testing efficiency.

[0006] The technical effects of the application are achieved by the following technical solutions.

[0007] The tire testing device compatible with the performance testing of the inner and outer surfaces of the rotating drum in the application comprises a device machine table for fixing and mounting the remaining mechanisms of the device, a rotating drum mechanism arranged on the device machine table for simulating the road surface load and rotating speed of the test tire applied by different road surfaces, and a tire loading mechanism arranged above the device machine table and abutting against the inner or outer surface of the rotating drum mechanism for loading and posture conversion of the test tire.

[0008] As one of the preferred solutions, the tire loading mechanism comprises a loading guide assembly for driving the test tire to move up and down in the vertical direction, and a wheel reversing assembly arranged on the loading guide assembly for driving the test tire to perform posture conversion.

[0009] As one of the preferred solutions, the loading guide assembly comprises a vertically arranged loading guide connecting rod, a load cell arranged at the bottom end of the loading guide connecting rod for measuring the mechanical response data of the test tire, and a load-bearing bracket arranged at the bottom of the load cell for connecting with the wheel reversing assembly.

[0010] As one of the preferred solutions, the wheel reversing assembly comprises a load-bearing shaft unit arranged on the load-bearing bracket and freely rotatable, and a wheel unit arranged on the load-bearing shaft unit for mounting the test tire.

[0011] As one of the preferred solutions, the load-bearing shaft unit comprises a shaft bearing set arranged on the load-bearing bracket, and a load-bearing shaft set freely rotatable around the circumferential direction of the shaft bearing set.

[0012] As one of the preferred solutions, the shaft bearing set comprises a bearing end cover mounted on the load-bearing bracket, and an upper thrust bearing and a lower thrust bearing spaced apart and mounted in the bearing end cover along the center line direction of the bearing end cover; wherein the bearing end cover comprises an end cover body, a fan-shaped limiting boss protruding from the top of the end cover body for limiting the rotation of the load-bearing shaft set, and a positioning clamping block mounted on the end cover body by a fastener for positioning the rotated load-bearing shaft set.

[0013] As one of the preferred solutions, a clamping block limiting installation groove is further formed in the bearing end cover and adapted to the positioning clamping block for limiting and fixing the positioning clamping block.

[0014] As one of the preferred solutions, the load-bearing shaft set comprises a shaft mounting clamp arranged between the upper thrust bearing and the lower thrust bearing, an L-shaped load-bearing shaft connected to the top end of the shaft mounting clamp, a positioning cover plate arranged at the top of the L-shaped load-bearing shaft and adapted to the bearing end cover, and a rotating arm outer cylinder sleeved on the vertical end of the L-shaped load-bearing shaft.

[0015] As one preferred embodiment, the positioning cover plate includes a cover plate body adapted to the top of the L-shaped load-bearing shaft, a fan-shaped limiting block protruding from the outer periphery of the cover plate body and adapted to the bearing end cover, and a cover plate positioning groove formed on the fan-shaped limiting block and adapted to the positioning clamping block.

[0016] As one preferred embodiment, the sum of the central angle α corresponding to the sector-shaped limiting block and the central angle β corresponding to the sector-shaped limiting boss is ≤180°.

[0017] As one preferred embodiment, the drum mechanism includes a drum whose inner or outer surface abuts against the test tire, a drum shaft passing through the center line of the drum for driving the drum to rotate, a shaft mounting seat connected to both ends of the drum shaft and disposed on the machine platform of the device, and a shaft drive component connected to one end of the drum shaft for driving the drum shaft to rotate.

[0018] As one preferred embodiment, the device includes a machine body and a rotating drum groove formed on the machine body and adapted to the rotating drum mechanism.

[0019] The tire testing method of this invention, which is compatible with the testing of the inner and outer surface properties of a drum, includes the following steps:

[0020] Equipment debugging: Check whether the test equipment described above is in a stopped state and confirm whether the connections between the various mechanisms in the equipment are normal; Tire reversal: Adjust the rotation of the test tire using the tire loading mechanism to rotate the test tire out of the drum's track surface; Height adjustment: Adjust the test tire that has rotated out of the drum's track surface by using the tire loading mechanism to move it up or down, so that the test tire moves from a height that abuts one surface of the drum to a height that abuts the other surface of the drum; Attitude adjustment: Rotate the test tire that has rotated out of the drum's track surface and reached the preset height back into the drum's track surface to align with the drum's track surface.

[0021] In summary, the present invention has at least the following advantages:

[0022] 1. The tire testing device of the present invention is compatible with the performance testing of the inner and outer surfaces of the drum. The tire loading mechanism can move and offset against the inner or outer surface of the drum mechanism according to the actual test needs, so as to meet the conversion of different installation postures of the test tire and the drum. This not only effectively improves the compatibility of the testing device and reduces the equipment manufacturing cost increased due to the special-purpose nature of the test equipment, but also the tire loading mechanism is a movable structural design, which facilitates the loading and unloading of the test tire, effectively improving the efficiency and ease of assembly and disassembly of the test tire, and thus effectively improving the overall testing efficiency of the testing device.

[0023] 2. The tire testing device of this invention, which is compatible with the performance testing of the inner and outer surfaces of the drum, realizes the reversing of the test tire through the wheel reversing component. When it is necessary to install or remove the test tire, the wheel reversing component can rotate the test tire out of the drum surface to facilitate the installation and removal of the test tire and improve the efficiency of the test. Moreover, when the test tire needs to switch the attitude with the drum, the wheel reversing component can first rotate the test tire out of the drum surface before switching the attitude of the test tire. This can effectively prevent the inability to achieve attitude switching due to interference between the test tire and the drum, thus affecting the efficiency of attitude switching.

[0024] 3. The tire testing method of this invention, which is compatible with the performance testing of the inner and outer surfaces of the drum, achieves the attitude change of the test tire by rotating and reversing the direction, adjusting the height, and reversing the direction again. The test method is simple and efficient, and can effectively improve the efficiency of the test. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the tire testing device that is compatible with the testing of the inner and outer surface performance of the drum in this embodiment of the invention;

[0026] Figure 2 This is a schematic diagram of the assembly structure of the device base and the drum mechanism in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the tire loading mechanism in an embodiment of the present invention;

[0028] Figure 4 This is an exploded view of the tire loading mechanism in an embodiment of the present invention;

[0029] Figure 5 This is a cross-sectional view of the assembly structure of the load-bearing rotating shaft unit and the load-bearing bracket in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the bearing end cap structure in an embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the positioning cover plate in an embodiment of the present invention;

[0032] Figure 8 This is a schematic flowchart of a tire testing method compatible with the testing of the inner and outer surface performance of a drum, as described in an embodiment of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of the present invention.

[0034] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0035] Example 1:

[0036] Please see the appendix Figure 1 This embodiment of a tire testing apparatus compatible with the performance testing of the inner and outer surfaces of a drum includes a machine base 100, a drum mechanism 200 mounted on the machine base 100, and a tire loading mechanism 300 movably mounted above the machine base 100, abutting against the inner or outer surface of the drum mechanism 200. The machine base 100 is used for fixing and installing the other components, the drum mechanism 200 is used to simulate the pavement load and rotational speed applied to the test tire by different road surfaces, and the tire loading mechanism 300 is used for loading and attitude conversion of the test tire.

[0037] Please refer to the appendix for further details. Figure 2 The apparatus 100 includes a body 110 and a drum movable groove 120 formed on the body 110 and adapted to the drum mechanism 200. The drum mechanism 200 includes a drum 210 whose inner or outer surface abuts against the test tire and is mounted on the drum movable groove 120; a drum shaft 220 passing through the center line of the drum 210 for driving the drum 210 to rotate; a shaft mounting seat 230 connected to both ends of the drum shaft 220 and provided on the apparatus 100; and a shaft drive member 240 connected to one end of the drum shaft 220 for driving the drum shaft 220 to rotate. Preferably, the inner and outer surfaces of the drum 210 can be configured with different material pavement modules according to actual test needs, such as asphalt, cement, or steel pavement with a certain roughness; the shaft drive 240 is selected as a motor with certain power and frequency conversion requirements, which can drive the drum 210 to rotate at a preset direction and speed according to the direction and speed required by the test. When the drum shaft 220 rotates under the driving action of the shaft drive 240, the drum 210 connected to the drum shaft 220 can also rotate under the driving action of the shaft drive 240. The test tire abuts against the inner or outer surface of the drum 210, which can effectively simulate the sliding of the test tire on different road surfaces.

[0038] This embodiment is compatible with tire testing devices that can test the performance of the inner and outer surfaces of the drum. The tire loading mechanism 300 can move and offset against the inner or outer surface of the drum 210 of the drum mechanism 200 according to the actual test needs, so as to meet the conversion of different installation postures of the test tire and the drum 210. This not only effectively improves the compatibility of the test device and reduces the equipment manufacturing cost increased due to the special nature of the test equipment, but also the tire loading mechanism 300 has a movable structural design, which facilitates the loading and unloading of the test tire, effectively improving the efficiency and ease of assembly and disassembly of the test tire, and thus effectively improving the overall test efficiency of the test device.

[0039] When the test tire is subjected to a loading test on the inner surface of the drum 210, the tire loading mechanism 300 applies an upward pulling force to press the test tire firmly against the inner edge surface of the drum 210. The magnitude of the pulling force can be set according to the loading force required by the test requirements, such as vertical force, lateral force, torsional force, and yaw force. When the test tire is subjected to a loading test on the outer surface of the drum 210, the tire loading mechanism 300 applies a downward pressure to press the test tire firmly against the outer edge surface of the drum 210. The magnitude of the pressure can be set according to the loading force required by the test requirements, and the power source for the loading force can be selected as hydraulic drive loading.

[0040] Example 2:

[0041] Please see the appendix Figure 1 This embodiment of a tire testing apparatus compatible with the performance testing of the inner and outer surfaces of a drum includes a platform 100, a drum mechanism 200 mounted on the platform 100, and a tire loading mechanism 300 movably mounted above the platform 100, abutting against the inner or outer surface of the drum mechanism 200. The platform 100 is used for fixing and installing the other mechanisms, the drum mechanism 200 is used to simulate the pavement load and rotation speed applied to the test tire by different road surfaces, and the tire loading mechanism 300 is used for loading and attitude conversion of the test tire. The main difference lies in the specific structural design of the tire loading mechanism 300 in this embodiment, which is as follows:

[0042] Please refer to the appendix for further details. Figure 3The tire loading mechanism 300 includes a loading guide assembly 310 for driving the test tire to move up and down in the vertical direction, and a wheel reversing assembly 320 disposed on the loading guide assembly 310 for driving the test tire to change its posture. This mechanism realizes the reversing of the test tire through the wheel reversing assembly 320. When it is necessary to install or remove the test tire, the wheel reversing assembly 320 can rotate the test tire out of the track surface of the drum 210 to facilitate the installation and removal of the test tire and improve the efficiency of the test. Moreover, when the test tire needs to switch its posture with the drum 210, the wheel reversing assembly 320 can first rotate the test tire out of the track surface of the drum 210 before switching the posture of the test tire. This can effectively prevent the failure to achieve posture switching due to interference between the test tire and the drum 210, which would affect the efficiency of posture switching.

[0043] Please refer to the appendix for further details. Figure 4 The loading guide assembly 310 includes a vertically arranged loading guide link 311, a force measuring unit 312 located at the bottom of the loading guide link 311 for measuring the mechanical response data of the test tire, and a load-bearing bracket 313 located at the bottom of the force measuring unit 312 for connecting with the wheel reversing assembly 320. The wheel reversing assembly 320 includes a load-bearing shaft unit 321 located on the load-bearing bracket 313 and freely rotatable, and a wheel unit 322 located on the load-bearing shaft unit 321 for mounting the test tire.

[0044] When the test tire needs to be adjusted from the test position on the outer surface of the drum 210 to the test position on the inner surface of the drum 210, the test device is first shut down. At this time, the tire loading mechanism 300 is fully unloaded and the equipment is in a safe shutdown state. Then, the load-bearing shaft unit 321 rotates 180° and locks. At this time, the wheel unit 322 mounted on the load-bearing shaft unit 321 rotates out of the drum 210 track surface under the drive of the load-bearing shaft unit 321. Then, the loading guide component 310 is activated, and the bearing bracket 313 is lowered to a certain height under the drive of the loading guide connecting rod 311, thereby driving the wheel reversing component 320 mounted on the bearing bracket 313 to also lower to a certain height. Then, the load-bearing shaft unit 321 is unlocked, and the wheel unit 322 is rotated 180° again through the load-bearing shaft unit 321 and rotated back to the position corresponding to the track surface of the drum 210, so that the test tire can be adjusted to the test position corresponding to the inner surface of the drum 210. Similarly, when the test tire needs to be adjusted from the test position on the inner surface of the drum 210 to the test position on the outer surface of the drum 210, the adjustment of the load-bearing shaft unit 321 to the wheel unit 322 is the same. The main difference is that the wheel reversing assembly 320 moves to the height of contact with the outer surface of the drum 210 under the driving action of the loading guide assembly 310.

[0045] When the test tire needs to be replaced or the wheel unit 322 needs to be repaired, especially after the test tire has been tested on the inner surface of the drum 210, the wheel unit 322 can be rotated out of the drum 210 by rotating the load-bearing shaft unit 321, so as to facilitate the replacement of the test tire and the repair of the wheel unit 322.

[0046] Example 3:

[0047] Please see the appendix Figure 1 This embodiment of a tire testing apparatus compatible with the performance testing of the inner and outer surfaces of a drum includes a machine base 100, a drum mechanism 200 mounted on the machine base 100, and a tire loading mechanism 300 movably mounted above the machine base 100, abutting against the inner or outer surface of the drum mechanism 200. The machine base 100 is used for fixing and installing the other mechanisms, the drum mechanism 200 is used to simulate the pavement load and rotation speed applied to the test tire by different road surfaces, and the tire loading mechanism 300 is used for loading and attitude conversion of the test tire. The main difference is that the tire loading mechanism 300 in this embodiment is further designed based on embodiment 2:

[0048] Please refer to the appendix for further details. Figure 4 The load-bearing pivot unit 321 includes a pivot bearing assembly 3211 mounted on the load-bearing bracket 313, and a load-bearing pivot assembly 3212 mounted on the pivot bearing assembly 3211 and capable of freely rotating around the pivot bearing assembly 3211 in the circumferential direction. Please refer to the appendix for further details. Figure 5 The rotating shaft bearing assembly 3211 includes a bearing end cover 3211a mounted on the bearing bracket 313, and an upper thrust bearing 3211b and a lower thrust bearing 3211c installed at intervals within the bearing end cover 3211a along the center line direction of the bearing end cover 3211a; the load-bearing rotating shaft assembly 3212 includes a rotating shaft mounting clamp 3212a located between the upper thrust bearing 3211b and the lower thrust bearing 3211c, an L-shaped load-bearing rotating shaft 3212b whose top end is connected to the rotating shaft mounting clamp 3212a, a positioning cover plate 3212c located on the top of the L-shaped load-bearing rotating shaft 3212b and adapted to the bearing end cover 3211a, and a rotating arm outer cylinder 3212d sleeved on the vertical end of the L-shaped load-bearing rotating shaft 3212b.

[0049] Please refer to the appendix for further details. Figure 6The bearing end cover 3211a includes an end cover body 301, a fan-shaped limiting boss 302 protruding from the top of the end cover body 301 for limiting the rotation of the load-bearing shaft assembly 3212, a positioning clamping block 304 mounted on the end cover body 301 by fasteners 303 for positioning the rotated load-bearing shaft assembly 3212, and a clamping block limiting mounting groove 305 opened on the top of the end cover body 301 and adapted to the positioning clamping block 304. The clamping block limiting mounting groove 305 can limit and fix the positioning clamping block 304 to prevent the positioning clamping block 304 from loosening from the end cover body 301.

[0050] Please refer to the appendix for further details. Figure 7 The positioning cover plate 3212c includes a cover plate body 306 adapted to the top of the L-shaped load-bearing shaft 3212b, a fan-shaped limiting block 307 protruding from the outer periphery of the cover plate body 306 and adapted to the bearing end cover 3211a, and a cover plate positioning groove 308 formed on the fan-shaped limiting block 307 and adapted to the positioning clamping block 304. Preferably, the sum of the central angle α corresponding to the fan-shaped limiting block 307 and the central angle β corresponding to the fan-shaped limiting boss 302 is ≤180°, which can effectively ensure that the rotation angle of the L-shaped load-bearing shaft 3212b is not less than 180°, so as to prevent the L-shaped load-bearing shaft 3212b from interfering with the surface of the drum 210 due to the rotation angle being too small.

[0051] When the L-shaped load-bearing shaft 3212b is unlocked, the fastener 303 is removed, and the positioning clamping block 304 can be removed from the clamping block limiting mounting groove 305 and the cover plate positioning groove 308. At this time, the positioning cover plate 3212c can rotate freely around the bearing end cover 3211a, so that the L-shaped load-bearing shaft 3212b connected to it can also rotate freely. However, due to the interference between the fan-shaped limiting boss 302 and the fan-shaped limiting block 307, the L-shaped load-bearing shaft 3212b can only rotate within a specific range of rotation to prevent the L-shaped load-bearing shaft 3212b from rotating back to its original state due to being unrestricted. When locking the L-shaped load-bearing shaft 3212b, align the cover plate positioning groove 308 with the clamping block limiting installation groove 305, then place the positioning clamping block 304 into the cover plate positioning groove 308 and the clamping block limiting installation groove 305, and fix it with the fastener 303. This will lock the L-shaped load-bearing shaft 3212b and prevent it from rotating during testing or maintenance, thus affecting the efficiency of testing and maintenance.

[0052] Example 4:

[0053] Please see the appendix Figure 8 This embodiment includes a tire testing method compatible with drum inner and outer surface performance testing, comprising the following steps:

[0054] Equipment debugging: Check whether the tire testing equipment compatible with the inner and outer surface performance testing of the drum as described in any of Examples 1-3 is in a stopped state, and confirm whether the connection between the various mechanisms in the equipment is normal.

[0055] Tire reversal: The test tire is rotated and adjusted by the tire loading mechanism 300 to move the test tire out of the track surface of the drum 210. Specifically, after removing the fastener 303, the positioning clamping block 304 is removed from the clamping block limiting installation groove 305 and the cover plate positioning groove 308. Then, the L-shaped load-bearing shaft 3212b is rotated to move the wheel unit 322 on the L-shaped load-bearing shaft 3212b out of the track surface of the drum 210. After aligning the cover plate positioning groove 308 with the clamping block limiting installation groove 305, the positioning clamping block 304 is placed in the cover plate positioning groove 308 and the clamping block limiting installation groove 305. After being fixed by the fastener 303, the rotation of the L-shaped load-bearing shaft 3212b is locked.

[0056] Height adjustment: The test tire that has rotated out of the drum 210 is adjusted to move up or down by the tire loading mechanism 300, so that the test tire moves from the height that abuts one surface of the drum 210 to the height that abuts the other surface of the drum 210; specifically, the height movement of the test tire is achieved by applying a loading force to the loading guide assembly 310.

[0057] Attitude adjustment: The test tire, which has been rotated out of the drum surface and reached the preset height, is rotated back into the drum surface to mate with the drum surface 210. Specifically, after removing the fastener 303, the positioning clamping block 304 is removed from the clamping block limiting mounting groove 305 and the cover plate positioning groove 308. Then, the L-shaped load-bearing shaft 3212b is rotated to rotate the wheel unit 322 on the L-shaped load-bearing shaft 3212b into the drum surface 210. After aligning the cover plate positioning groove 308 with the clamping block limiting mounting groove 305, the positioning clamping block 304 is placed in the cover plate positioning groove 308 and the clamping block limiting mounting groove 305 and fixed by the fastener 303. This allows the test tire to switch attitudes.

[0058] Furthermore, to further ensure the accuracy of the test equipment after the test tire's posture is switched, the height of the test tire can be adjusted again by loading the guide component 310 after the test tire rotates into the drum 210, so as to ensure that the test tire is in close contact with the drum 210 and to realistically and effectively simulate the various performance characteristics of the tire.

[0059] As can be seen from the technical solutions of the above embodiments, the present invention provides a tire testing device compatible with the testing of the inner and outer surface performance of a drum. This not only effectively improves the compatibility of the testing device and reduces equipment manufacturing costs, but also facilitates the loading and unloading of test tires, effectively improving the efficiency and simplicity of tire assembly and disassembly, thereby effectively improving the overall testing efficiency of the testing device. The present invention also provides a tire testing method compatible with the testing of the inner and outer surface performance of a drum, which is simple and efficient, effectively improving testing efficiency.

[0060] In the description of this invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0061] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "horizontal," "vertical," "suspended," etc., do not mean that the component is required to be absolutely horizontal or suspended, but can be slightly tilted.

[0062] Although the description of the invention has been given in conjunction with the specific embodiments described above, it will be apparent to those skilled in the art that many substitutions, modifications, and variations can be made based on the foregoing. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A tire testing device compatible with performance testing of the inner and outer surfaces of a rotating drum, characterized in that, The device machine platform is used for fixing and mounting the remaining mechanism of the device. The drum mechanism is arranged on the device machine platform and is used for simulating the road surface load and rotation speed of the test tire on different road surfaces. The tire loading mechanism is movably arranged above the device machine platform and is used for loading and posture conversion of the test tire. The tire loading mechanism includes a loading guide assembly for driving the test tire to move up and down in the vertical direction and a wheel reversing assembly arranged on the loading guide assembly for driving the test tire to perform posture conversion. The loading guide assembly includes a vertically arranged loading guide link, a load cell arranged at the bottom end of the loading guide link for measuring the mechanical response data of the test tire, and a load carrier bracket arranged at the bottom of the load cell for connecting with the wheel reversing assembly. The wheel reversing assembly includes a load-bearing shaft unit arranged on the load carrier bracket and freely rotatable, and a wheel unit arranged on the load-bearing shaft unit for mounting the test tire. The load-bearing shaft unit includes a shaft bearing group arranged on the load carrier bracket and a load-bearing shaft group freely rotatable around the circumferential direction of the shaft bearing group. The shaft bearing group includes a bearing end cover arranged on the load carrier bracket, and an upper thrust bearing and a lower thrust bearing arranged in the bearing end cover along the center line direction of the bearing end cover. The bearing end cover includes an end cover body, a fan-shaped limiting boss protruding from the top of the end cover body for limiting the rotation of the load-bearing shaft group, and a positioning clamp block arranged on the end cover body by a fastener for positioning the rotated load-bearing shaft group.

2. The test device of claim 1, wherein A clamp block limiting installation groove is formed in the bearing end cover and is matched with the positioning clamp block for limiting and fixing the positioning clamp block.

3. The test device of claim 1, wherein The load-bearing shaft group includes a shaft mounting clamp arranged between the upper thrust bearing and the lower thrust bearing, an L-shaped load-bearing shaft connected with the top end of the shaft mounting clamp, a positioning cover plate arranged on the top of the L-shaped load-bearing shaft and matched with the bearing end cover, and a rotating arm outer cylinder sleeved on the vertical end of the L-shaped load-bearing shaft.

4. The test device of claim 3, wherein The positioning cover plate includes a cover plate body matched with the top end of the L-shaped load-bearing shaft, a fan-shaped limiting block protruding from the outer periphery of the cover plate body and matched with the bearing end cover, and a cover plate positioning groove formed in the fan-shaped limiting block and matched with the positioning clamp block.

5. The test device of claim 4, wherein, The sum of the central angle α of the fan-shaped limiting block and the central angle β of the fan-shaped limiting boss is less than or equal to 180 degrees.

6. The test device of claim 1, wherein The drum mechanism includes a drum with an inner surface or an outer surface abutting against the test tire, a drum shaft penetrating through the center line of the drum for driving the drum to rotate, a shaft mounting seat connected with both ends of the drum shaft and arranged on the device machine platform, and a shaft driving member connected with one end of the drum shaft for driving the drum shaft to rotate.

7. The test device of claim 1, wherein The device machine platform includes a machine platform body and a drum movable slot formed in the machine platform body and matched with the drum mechanism.

8. A tire testing method compatible with testing of the inner and outer surface properties of a rotating drum, characterized by, The device machine platform includes a machine platform body and a drum movable slot formed in the machine platform body and matched with the drum mechanism. The device machine platform includes a machine platform body and a drum movable slot formed in the machine platform body and matched with the drum mechanism. Device debugging: checking whether the test device as claimed in any one of claims 1-7 is in a shutdown state, and confirming whether the connection between each mechanism in the device is normal; Tire reversing: rotating and adjusting the test tire by the tire loading mechanism, and rotating the test tire out of the pavement of the drum; Height adjustment: adjusting the test tire out of the pavement of the drum by moving up or down, so that the test tire moves from the height of abutting one surface of the drum to the height of abutting another surface of the drum; Posture adjustment: rotating the test tire out of the pavement of the drum to the preset height, and then rotating the test tire into the pavement of the drum again to cooperate with the pavement of the drum.

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