Tire rigidity testing machine

Abstract

The invention discloses a tire rigidity testing machine, and relates to the technical field of tire testing. The station shaft has a rotating state and a locking state; the radial loading part moves in the direction close to or away from the tire, the torsion part is arranged on the radial loading part, the longitudinal and transverse loading part is connected with the torsion part, and the torsion part drives the longitudinal and transverse loading part to rotate; when the longitudinal and transverse loading part is at the first rotating position, the longitudinal and transverse loading part moves along the first direction to carry out a longitudinal rigidity test on the tire; when the longitudinal and transverse loading part is at the second rotating position, the longitudinal and transverse loading part moves along the second direction to carry out a transverse rigidity test on the tire; and the puncture part is detachably connected with the longitudinal and transverse loading part. The testing machine can meet the testing requirements of the engineering giant tire and is compact in structure.

Description

Technical Field

[0001] The present invention relates to the technical field of tire testing, and in particular to a tire rigidity testing machine. Background Art

[0002] The growing demand for testing giant OTR tires necessitates specialized testing equipment for their rigidity. Existing tire testing machines are only capable of testing smaller tires or are limited to static load testing. Most of these machines utilize vertical structures, making them inadequate for testing giant OTR tires. Furthermore, the loading platforms of existing tire rigidity testing machines utilize separate loading mechanisms for longitudinal and lateral loading, and torsional rigidity testing requires a separate, complex loading mechanism.

[0003] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Summary of the Invention

[0004] In response to the problems pointed out in the background technology, the present invention provides a tire rigidity testing machine that meets the testing requirements of engineering giant tires and has a compact structure.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: In some embodiments of the present application, a tire rigidity testing machine is provided, comprising: a work station shaft configured to mount a tire to be tested, the work station shaft having a rotating state and a locked state; a radial loading portion configured to move toward or away from the tire; a torsion portion, disposed on the radial loading portion; a longitudinal and transverse loading portion connected to the torsion portion, wherein the torsion portion is configured to drive the longitudinal and transverse loading portion to rotate, and the longitudinal and transverse loading portion has a first rotation position and a second rotation position; When the longitudinal and transverse loading parts are in the first rotational position, the longitudinal and transverse loading parts are configured to move along a first direction to perform a longitudinal rigidity test on the tire; When the longitudinal and transverse loading parts are in the second rotational position, the longitudinal and transverse loading parts are configured to move along the second direction to perform a transverse rigidity test on the tire; The puncture part is detachably connected to the longitudinal and transverse loading parts.

[0006] In some embodiments of the present application, when the tire rigidity testing machine performs a puncture test on the tire, the tire can rotate, and the puncture portion is mounted on the longitudinal and transverse loading portions.

[0007] In some embodiments of the present application, when the tire rigidity testing machine performs a torsional rigidity test on the tire, the torsion unit drives the longitudinal and transverse loading units to rotate back and forth within a set angle range.

[0008] In some embodiments of the present application, the torsion portion includes a torsion platform and a torsion driving portion, the torsion driving portion is configured to drive the torsion platform to rotate, and the longitudinal and transverse loading portions are connected to the torsion platform.

[0009] In some embodiments of the present application, the torsion drive unit includes a torsion drive cylinder, a crank is provided at the power output end of the torsion drive cylinder, a connecting portion is provided on the crank, and the torsion platform is fixedly connected to the connecting portion.

[0010] In some embodiments of the present application, the torsion portion further includes a first sensor, which is disposed between the torsion drive cylinder and the crank and is configured to detect the thrust of the torsion drive cylinder on the crank.

[0011] In some embodiments of the present application, the radial loading portion includes a radial loading platform and a radial loading cylinder, and the radial loading cylinder drives the radial loading platform to move toward or away from the tire; The torsion drive cylinder is fixedly arranged on the radial loading platform, and the connecting portion is rotationally connected to the radial loading platform.

[0012] In some embodiments of the present application, the longitudinal and transverse loading parts include a longitudinal and transverse loading platform and a longitudinal and transverse driving cylinder, the longitudinal and transverse driving cylinder drives the longitudinal and transverse loading platform to move, the longitudinal and transverse driving cylinder is fixedly set on the torsion platform, and the longitudinal and transverse loading platform is slidably set on the torsion platform.

[0013] In some embodiments of the present application, there are further included two first fixing seats arranged opposite to each other, wherein the first fixing seats have special-shaped mounting holes formed therein; The workstation shaft is provided with a special-shaped shaft segment, the cross-sectional profile of the special-shaped shaft segment is non-circular, and the special-shaped shaft segment is adapted to the special-shaped mounting hole to keep the workstation shaft in the locked state.

[0014] In some embodiments of the present application, there are two second fixed seats arranged opposite to each other. A bearing is provided on the work station shaft, and the bearing is connected to the second fixed seat. After the limitation of the work station shaft by the first fixed seat is released, the work station shaft can rotate.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are: In the tire rigidity testing machine disclosed in this application, the tire loading system includes a radial loading unit, a torsion unit, and a longitudinal and transverse loading unit. The torsion unit is arranged on the radial loading unit, and the torsion unit drives the longitudinal and transverse loading units to rotate in the vertical plane to change the position state of the longitudinal and transverse loading units. The vertical and horizontal movements of the longitudinal and transverse loading units are combined to realize radial rigidity testing, longitudinal rigidity testing, or transverse rigidity testing of the tire. Longitudinal loading and transverse loading are driven by the same set of loading mechanisms. The overall structure of the tire loading system is compact, and the various components cooperate with each other to meet the testing requirements of large engineering tires. The tire rigidity testing machine can perform radial, longitudinal, transverse, and torsional rigidity tests and puncture strength tests on large engineering tires, and is multifunctional and integrated.

[0016] Other features and advantages of the present invention will become more apparent after reading the detailed description of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 is a structural diagram of a tire rigidity testing machine according to some embodiments; Figure 2 is a structural diagram of a tire loading system according to some embodiments; Figure 3 is another structural diagram of a tire loading system according to some embodiments; Figure 4 is another structural diagram of a tire loading system according to some embodiments; Figure 5 is a cross-sectional view of a tire loading system according to some embodiments; Figure 6 is a structural diagram of a workstation shaft assembly according to some embodiments; Figure 7 is another structural diagram of a workstation shaft assembly according to some embodiments; Figure 8 is a cross-sectional view of a workstation shaft assembly according to some embodiments; Figure 9 is a structural diagram of a workstation axis according to some embodiments; Figure 10 1 is a structural diagram of a first fixing seat according to some embodiments.

[0019] Reference numerals: 10. Tire loading system; 20. Workstation axis assembly; 30. Frame; 31. Second sliding portion; 40. Tires; 100, radial loading portion; 110, radial loading platform; 111, first sliding portion; 120, through port; 200, torsion unit; 210, torsion stage; 211, fourth sliding unit; 220, torsion drive unit; 221, torsion drive cylinder; 222, crank; 223, connection unit; 2231, connection shaft; 2232, turntable; 230, first sensor; 300, longitudinal and transverse loading unit; 310, longitudinal and transverse loading platform; 311, third sliding unit; 320, longitudinal and transverse driving cylinder; 330, second sensor; 400, workstation shaft; 410, special-shaped shaft segment; 411, shaft arc segment; 412, shaft bevel segment; 420, bearing; 500, first fixing seat; 510, special-shaped mounting hole; 511, hole arc section; 512, hole bevel section; 520, first sub-fixing seat; 521, inclined wall; 530, second sub-fixing seat; 531, extension portion; 600. Second fixed seat. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0024] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0025] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0026] In some embodiments of the present application, a tire rigidity testing machine is provided, referring to Figure 1 The tire rigidity tester can perform radial rigidity tests, longitudinal rigidity tests, lateral rigidity tests, torsional rigidity tests, static load tests, strength tests, etc. on tires. The outer diameter of the tire that can be tested can reach up to 4200mm, which is a giant engineering tire. The tire rigidity tester of this application is a horizontal structure.

[0027] The tire rigidity testing machine includes a station shaft assembly 20. The station shaft assembly 20 includes a station shaft 400. The station shaft 400 is arranged horizontally and is configured to mount a tire 40 to be tested. Figure 6 is a structural diagram of the workstation shaft assembly 20, Figure 8 is a cross-sectional view of the workstation shaft assembly 20, Figure 9It is a structural diagram of the workstation axis 400.

[0028] The tire rigidity testing machine further includes a tire loading system 10. The tire loading system 10 is disposed beside the work station shaft 400. In other words, the work station shaft assembly 20 and the tire loading system 10 are arranged in sequence along the horizontal direction. Figure 2 and Figure 3 A structural diagram of the tire loading system 10 viewed from different angles is shown. Figure 5 FIG. 1 is a cross-sectional view of the tire loading system 10 .

[0029] The tire rigidity testing machine further comprises a frame 30 , on which the workstation shaft assembly 20 and the tire loading system 10 are arranged.

[0030] The tire loading system 10 includes a radial loading unit 100. The radial loading unit 100 is configured to move toward or away from the tire 40. The radial loading unit 100 is slidably connected to the frame 30 and moves horizontally along the frame 30.

[0031] The tire loading system 10 further includes a torsion unit 200 , which is disposed on the radial loading unit 100 .

[0032] The tire loading system 10 further includes a longitudinal and transverse loading unit 300. The longitudinal and transverse loading unit 300 is connected to the twisting unit 200. The twisting unit 200 is configured to drive the longitudinal and transverse loading unit 300 to rotate. The twisting unit 200 drives the longitudinal and transverse loading unit 300 to rotate in a vertical plane.

[0033] The longitudinal and transverse loading portion 300 has a first rotational position and a second rotational position. Figure 2 The middle longitudinal transverse loading portion 300 is in the first rotation position. Figure 4 The middle longitudinal transverse loading portion 300 is in the second rotation position.

[0034] In one embodiment, in the first rotational position, the longitudinal and transverse loading unit 300 is in a vertical state; in the second rotational position, the longitudinal and transverse loading unit 300 is in a horizontal state. The twisting unit 200 drives the longitudinal and transverse loading unit 300 to switch between the first rotational position and the second rotational position.

[0035] Reference Figure 2 When the longitudinal and transverse loading parts 300 are at the first rotational position, the longitudinal and transverse loading parts 300 are configured to move along the first direction to perform a longitudinal rigidity test on the tire 40 .

[0036] In a specific embodiment, the first direction is a vertical direction. When the longitudinal and transverse loading parts 300 are at the first rotational position, the longitudinal and transverse loading parts 300 are configured to move along the vertical direction to perform a longitudinal rigidity test on the tire 40 .

[0037] In other words, when the tire 40 is subjected to the longitudinal rigidity test, the longitudinal and transverse loading parts 300 are in the following positions: Figure 2 In the first rotation position shown, the radial loading part 100 moves toward the direction close to the tire 40, driving the longitudinal and transverse loading parts 300 to move synchronously toward the direction close to the tire 40 until they abut against the tire 40. The longitudinal and transverse loading parts 300 move in the vertical direction to perform a longitudinal rigidity test on the tire 40.

[0038] Reference Figure 4 When the longitudinal and transverse loading parts 300 are at the second rotational position, the longitudinal and transverse loading parts 300 are configured to move along the second direction to perform a transverse rigidity test on the tire 40 .

[0039] In a specific embodiment, the second direction is a horizontal direction. When the longitudinal and transverse loading parts 300 are at the second rotational position, the longitudinal and transverse loading parts 300 are configured to move along the horizontal direction to perform a transverse rigidity test on the tire 40 .

[0040] In other words, when the tire 40 is subjected to the lateral rigidity test, the longitudinal and lateral loading parts 300 are in the following positions: Figure 4 In the second rotation position shown, the radial loading part 100 moves toward the direction close to the tire 40, driving the longitudinal and transverse loading parts 300 to move synchronously toward the direction close to the tire 40 until they abut against the tire 40. The longitudinal and transverse loading parts 300 move in the horizontal direction to perform a transverse rigidity test on the tire 40.

[0041] When the tire 40 is undergoing a radial rigidity test, the longitudinal and transverse loading sections 300 do not move vertically or horizontally. The radial loading section 100 moves toward the tire 40, driving the longitudinal and transverse loading sections 300 to move synchronously toward the tire 40 until they abut against the tire 40. The radial loading section 100 continues to apply pressure to perform a radial rigidity test on the tire 40.

[0042] Tire loading system 10 includes a radial loading unit 100, a torsion unit 200, and longitudinal and transverse loading units 300. The torsion unit 200 is mounted on the radial loading unit 100 and drives the longitudinal and transverse loading units 300 to rotate in the vertical plane, changing their positions. The vertical and horizontal movements of the longitudinal and transverse loading units 300 are combined to perform radial, longitudinal, or transverse rigidity tests on the tire 40. Longitudinal and transverse loading are driven by the same loading mechanism. The tire loading system 10 features a compact overall structure, with its components working in tandem to meet diverse testing requirements for the tire 40.

[0043] In some embodiments of the present application, the workstation shaft 400 is in a locked state. When performing rigidity tests on the tire 40, such as radial rigidity tests, longitudinal rigidity tests, transverse rigidity tests, and torsional rigidity tests, the workstation shaft 400 is in a locked state and does not rotate.

[0044] The station shaft 400 also has a rotating state. When the tire 40 is subjected to a puncture strength test, the station shaft 400 is in a rotating state, and the station shaft 400 can rotate, and the station shaft 400 drives the tire 40 mounted thereon to rotate synchronously.

[0045] The tire loading system 10 also includes a puncture unit (not shown). The puncture unit is detachably connected to the longitudinal and transverse loading units 300. For example, the puncture unit is a puncture rod structure, and the puncture unit is connected to the longitudinal and transverse loading units 300 by means of a clamping joint, bolts, etc.

[0046] The tire rigidity tester can also perform a puncture strength test on the tire 40. When performing the puncture strength test on the tire 40, the puncture unit is attached to the longitudinal and transverse loading units 300. When the puncture strength test on the tire 40 is no longer required, the puncture unit is removed from the longitudinal and transverse loading units 300.

[0047] When performing a puncture strength test on the tire 40, the tire 40 is provided with multiple puncture test points along its circumference, for example, five. The puncture part is installed on the longitudinal and transverse loading parts 300, and the work station shaft 400 is first in a locked state. The radial loading part 100 moves toward the direction close to the tire 40, driving the longitudinal and transverse loading parts 300 to move synchronously toward the direction close to the tire 40. The radial loading part 100 continues to apply pressure, and the puncture part punctures the first puncture test point of the tire 40 to perform a puncture strength test on the tire 40. After the test of the first puncture test point is completed, the radial loading part 100 moves in the direction away from the tire 40, the puncture part detaches from the tire 40, and then the work station shaft 400 switches to the rotating state, and the work station shaft 400 drives the tire 40 to rotate, so that the tire 40 rotates to the second puncture test point facing the puncture part, and the work station shaft 400 switches to the locked state, and then the radial loading part 100 moves in the direction close to the tire 40, so that the puncture part punctures the second puncture test point, and so on, to complete the puncture strength test of the remaining puncture test points.

[0048] The station shaft 400 is provided with a locked state and a rotating state to meet the use requirements of the tire 40 puncture strength test.

[0049] In some embodiments of the present application, the tire rigidity tester can also perform a torsional rigidity test on the tire 40. When the tire rigidity tester performs a torsional rigidity test on the tire 40, the torsion unit 200 drives the longitudinal and transverse loading units 300 to rotate back and forth within a set angle range.

[0050] Specifically, when the tire 40 is subjected to a torsional rigidity test, the radial loading portion 100 moves toward the direction approaching the tire 40, driving the longitudinal and transverse loading portions 300 to synchronously move toward the direction approaching the tire 40 until they abut against the tire 40. The torsion portion 200 drives the longitudinal and transverse loading portions 300 to rotate back and forth within a set angle range to perform a torsional rigidity test on the tire 40.

[0051] Furthermore, the initial position of the longitudinal and transverse loading parts 300 is set to a vertical state, that is, Figure 2 In the state shown, when the torsional rigidity test is performed, the torsion part 200 drives the longitudinal and transverse loading parts 300 to rotate a certain angle first, for example, 45° first, and then the torsion part 200 drives the longitudinal and transverse loading parts 300 to rotate back and forth within the set angle range, for example, to rotate back and forth within the angle range of plus or minus 15°.

[0052] In some embodiments of the present application, the radial loading unit 100 includes a radial loading platform 110 and a radial loading cylinder (not shown). The radial loading cylinder drives the radial loading platform 110 to move toward or away from the tire 40. Figure 1 For example, the radial loading cylinder is disposed on the right side of the radial loading platform 110 .

[0053] The radial loading platform 110 is slidably connected to the frame 30. For example, a first sliding portion 111 is provided at the bottom of the radial loading platform 110, and a second sliding portion 31 is correspondingly provided on the frame 30. The first sliding portion 111 and the second sliding portion 31 are slidably connected. For example, the first sliding portion 111 is a slider, and the second sliding portion 31 is a rail.

[0054] In some embodiments of the present application, the torsion portion 200 is disposed on the radial loading platform 110 .

[0055] In some embodiments of the present application, the torsion unit 200 includes a torsion platform 210 and a torsion drive unit 220. The torsion drive unit 220 is configured to drive the torsion platform 210 to rotate. The torsion drive unit 220 is disposed on the radial loading platform 110, and the torsion platform 210 is fixedly connected to the longitudinal and transverse loading units 300. The torsion drive unit 220 drives the torsion platform 210 to rotate, and the torsion platform 210 drives the longitudinal and transverse loading units 300 to rotate synchronously.

[0056] In some embodiments of this application, refer to Figure 3 and Figure 5 The torsion drive unit 220 includes a torsion drive cylinder 221. A crank 222 is provided at the power output end of the torsion drive cylinder 221. A connecting portion 223 is provided on the crank 222. The torsion stage 210 is fixedly connected to the connecting portion 223. The torsion drive cylinder 221 is fixedly mounted on the radial loading stage 110. The connecting portion 223 is rotatably connected to the radial loading stage 110.

[0057] The torsion drive cylinder 221 drives the crank 222 to move, the crank 222 drives the connecting portion 223 to rotate, the connecting portion 223 drives the torsion platform 210 to rotate synchronously, and further drives the longitudinal and transverse loading portions 300 to rotate. Figure 3 The dotted lines in the figure represent different position states of the crank 222. The crank 222 is used to transmit force, and the structure is compact and reliable.

[0058] In some embodiments of this application, refer to Figure 5 The connecting portion 223 includes a connecting shaft 2231 and a rotating disk 2232. One end of the connecting shaft 2231 is fixedly connected to the crank 222, and the other end is fixedly connected to the rotating disk 2232. The radial loading platform 110 is provided with a through opening 120. The connecting shaft 2231 and the rotating disk 2232 are connected through the through opening 120. The rotating disk 2232 is rotatably connected to the radial loading platform 110.

[0059] The embodiment does not specifically limit the manner in which the turntable 2232 and the radial loading platform 110 are rotatably connected. For example, the turntable 2232 and the radial loading platform 110 may be rotatably connected via an annular protrusion and a groove.

[0060] The connection portion 223 is positioned within the radial loading platform 110, resulting in a more compact overall structure and reduced size. The torsion drive cylinder 221 and crank 222 are located on one side (e.g., the rear side) of the connection portion 223, while the torsion platform 210 is located on the other side (e.g., the front side) of the connection portion 223. This facilitates force transmission while also facilitating connection between the torsion platform 210 and the longitudinal and transverse loading components 300.

[0061] In some embodiments of the present application, the longitudinal and transverse loading parts 300 include longitudinal and transverse loading platforms 310 and longitudinal and transverse driving cylinders 320. The longitudinal and transverse driving cylinders 320 drive the longitudinal and transverse loading platforms 310 to move. The longitudinal and transverse driving cylinders 320 are fixedly set on the torsion platform 210, and the longitudinal and transverse loading platforms 310 are slidably set on the torsion platform 210.

[0062] Specifically, the cylinder body of the longitudinal and transverse driving cylinder 320 is fixedly connected to the torsion platform 210 , and the power output end of the longitudinal and transverse driving cylinder 320 is fixedly connected to the longitudinal and transverse loading platform 310 .

[0063] This embodiment does not specifically limit the sliding connection structure between the torsion platform 210 and the longitudinal and transverse loading platform 310. For example, the longitudinal and transverse loading platform 310 is provided with a third sliding portion 311, and the torsion platform 210 is correspondingly provided with a fourth sliding portion 211. The third sliding portion 311 and the fourth sliding portion 211 are slidably connected. For example, the third sliding portion 311 is a slider, and the fourth sliding portion 211 is a rail.

[0064] The torsion platform 210 rotates, driving the longitudinal and transverse loading platforms 310 to rotate synchronously, so that the longitudinal and transverse loading platforms 310 switch between the first rotation position and the second rotation position, and when performing a torsional stiffness test, the longitudinal and transverse loading platforms 310 rotate within a set angle range.

[0065] When conducting the longitudinal rigidity test, the longitudinal and transverse loading platforms 310 are in Figure 2 In the vertical state shown, the longitudinal and transverse driving cylinders 320 drive the longitudinal and transverse loading platforms 310 to move up and down.

[0066] When conducting the lateral rigidity test, the longitudinal and lateral loading platforms 310 are in Figure 4 In the horizontal state shown, the longitudinal and transverse driving cylinders 320 drive the longitudinal and transverse loading platform 310 to move horizontally.

[0067] In some embodiments of the present application, the puncture portion is detachably connected to the longitudinal and transverse loading portion 300 , specifically, the puncture portion is detachably connected to the longitudinal and transverse loading platform 310 .

[0068] In some embodiments of the present application, longitudinal and transverse driving cylinders 320 are respectively provided on opposite sides of the longitudinal and transverse loading platforms 310 to improve the movement stability of the longitudinal and transverse loading platforms 310 .

[0069] In some embodiments of the present application, the torsion unit 200 further includes a first sensor 230, which is configured to detect the thrust of the torsion drive unit 220. Figure 3 The first sensor 230 is disposed between the torsion drive cylinder 221 and the crank 222 and is configured to detect the thrust of the torsion drive cylinder 221 on the crank 222. The loading torque is calculated based on the thrust.

[0070] In some embodiments of this application, refer to Figure 2 A second sensor 330 is provided on the longitudinal and transverse driving cylinder 320, and the second sensor 330 is configured to detect the longitudinal or transverse loading force.

[0071] In some embodiments of this application, refer to Figure 9 , a special-shaped shaft section 410 is provided on the workstation shaft 400. The cross-sectional profile of the special-shaped shaft section 410 is non-circular.

[0072] Reference Figure 6 The workstation shaft assembly 20 further includes two first fixing seats 500 that are oppositely arranged. The first fixing seats 500 are arranged on the frame 30. Figure 10Figure 5 is a structural diagram of the first fixing base 500. A special-shaped mounting hole 510 is formed within the first fixing base 500. The special-shaped mounting hole 510 mates with the special-shaped shaft segment 410 to maintain the workstation shaft 400 in a locked state. When locked, the workstation shaft 400 cannot rotate, facilitating rigidity tests on the tire 40, such as radial, longitudinal, lateral, and torsional rigidity tests.

[0073] In some embodiments of the present application, the workstation shaft assembly 20 further includes two oppositely disposed second fixing bases 600. The second fixing bases 600 are disposed on the frame 30. The workstation shaft 400 is rotatably connected to the second fixing bases 600. After the first fixing base 500 releases the position restriction on the workstation shaft 400, the workstation shaft 400 can rotate.

[0074] As mentioned above, when the tire 40 is subjected to a puncture strength test, when the puncture position is changed, the limit of the first fixed seat 500 on the work station shaft 400 is released, and the work station shaft 400 rotates. When it rotates to the next puncture point facing the puncture part, the work station shaft 400 stops rotating, and the first fixed seat 500 locks the work station shaft 400 again.

[0075] In some embodiments of this application, refer to Figure 6 and Figure 8 A bearing 420 is provided on the work station shaft 400, and the bearing 420 is connected to the second fixed seat 600, so that a rotational connection between the work station shaft 400 and the second fixed seat 600 is realized.

[0076] In some embodiments of this application, refer to Figure 9 The outer peripheral wall of the special-shaped shaft segment 410 includes an inclined surface segment and an arc surface segment, which are respectively recorded as the shaft inclined surface segment 412 and the shaft arc surface segment 411. Figure 10 The inner wall of the irregular mounting hole 510 also includes an inclined surface segment and an arcuate surface segment, respectively designated as the inclined hole segment 512 and the arcuate hole segment 511. The shaft inclined surface segment 412 mates with the inclined hole segment 512, and the shaft arcuate surface segment 411 mates with the arcuate hole segment 511. The provision of the inclined surface segment enables the irregular mounting hole 510 to limit and lock the workstation shaft 400.

[0077] In some embodiments of the present application, the outer peripheral wall of the special-shaped shaft segment 410 includes two shaft arc segments 411 disposed in an upper and lower direction and two shaft bevel segments 412 disposed in a left and right direction. Correspondingly, the inner wall of the special-shaped mounting hole 510 includes two hole arc segments 511 disposed in an upper and lower direction and two hole bevel segments 512 disposed in a left and right direction.

[0078] In some embodiments of this application, refer to Figure 10The first fixing base 500 includes a first sub-fixing base 520 and a second sub-fixing base 530. The first sub-fixing base 520 and the second sub-fixing base 530 are detachably connected. A special-shaped mounting hole 510 is formed between the first sub-fixing base 520 and the second sub-fixing base 530.

[0079] When the first fixing seat 500 needs to release the lock on the workstation shaft 400, one of the first sub-fixing seat 520 and the second sub-fixing seat 530 can be removed. At this time, the shaft bevel section 412 and the hole bevel section 512 are disengaged.

[0080] For example, the second sub-fixing seat 530 is detachably arranged above the first sub-fixing seat 520. When the first fixing seat 500 is required to release the lock on the station shaft 400, the second sub-fixing seat 530 can be removed. Figure 7 .

[0081] In some embodiments of this application, refer to Figure 10 , the lower inner wall of the special-shaped mounting hole 510 has a first arc-shaped wall. Figure 9 The outer peripheral wall of the special-shaped shaft segment 410 has a second arcuate wall, and the first arcuate wall is adapted to the second arcuate wall. Specifically, the hole arcuate surface segment 511 located below is the first arcuate wall, and the shaft arcuate surface segment 411 located below is the second arcuate wall.

[0082] In this way, when the work station shaft 400 needs to rotate, the second sub-fixing seat 530 is removed to release the locking limit of the work station shaft 400. At this time, when the work station shaft 400 rotates, the first arc-shaped wall supports the work station shaft 400 and does not interfere with the rotation of the work station shaft 400.

[0083] In some embodiments of this application, refer to Figure 10 The first sub-fixing seat 520 is formed with a first installation opening, and the inner wall of the first installation opening has a first arc-shaped wall.

[0084] The second sub-fixing seat 530 is formed with a second installation opening. The second sub-fixing seat 530 is installed to the first installation opening. The inner cavity of the second installation opening and the first arc-shaped wall form a special-shaped installation hole 510 .

[0085] In some embodiments of the present application, the inner wall of the first mounting opening further has an inclined wall 521 , and the second sub-fixing seat 530 cooperates with the inclined wall 521 to improve the assembly reliability between the first sub-fixing seat 520 and the second sub-fixing seat 530 .

[0086] In some embodiments of the present application, the second sub-mount 530 has an extension portion 531, which is connected to the top of the first sub-mount 520 via a connector (such as a bolt), further improving the assembly reliability between the first sub-mount 520 and the second sub-mount 530.

[0087] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0088] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A tire rigidity testing machine, characterized in that: Included are: A station shaft, configured to mount a tire to be tested, the station shaft having a rotating state and a locking state; a radial loading portion configured to move toward or away from the tire; A torsion portion, disposed on the radial loading portion; A longitudinal and transverse loading part connected to the torsion part, the torsion part is configured to drive the longitudinal and transverse loading part to rotate, and the longitudinal and transverse loading part has a first rotation position and a second rotation position; When the longitudinal and transverse loading parts are in the first rotational position, the longitudinal and transverse loading parts are configured to move along a first direction to perform a longitudinal rigidity test on the tire; When the longitudinal and transverse loading parts are in the second rotational position, the longitudinal and transverse loading parts are configured to move along the second direction to perform a transverse rigidity test on the tire; The puncture part is detachably connected to the longitudinal and transverse loading parts.

2. The tire rigidity testing machine according to claim 1, characterized in that: When the tire rigidity testing machine performs a puncture test on the tire, the tire can rotate, and the puncture portion is mounted on the longitudinal and transverse loading portions.

3. The tire rigidity testing machine according to claim 1, characterized in that: When the tire rigidity testing machine performs a torsional rigidity test on the tire, the torsion unit drives the longitudinal and lateral loading units to reciprocate within a set angle range.

4. The tire rigidity testing machine according to claim 1, characterized in that: The torsion part includes a torsion platform and a torsion driving part, wherein the torsion driving part is configured to drive the torsion platform to rotate, and the longitudinal and transverse loading parts are connected to the torsion platform.

5. The tire rigidity testing machine according to claim 4, characterized in that: The torsion drive unit includes a torsion drive cylinder, a crank is provided at the power output end of the torsion drive cylinder, a connecting portion is provided on the crank, and the torsion platform is fixedly connected to the connecting portion.

6. The tire rigidity testing machine according to claim 5, characterized in that: The torsion portion further includes a first sensor, which is disposed between the torsion drive cylinder and the crank and is configured to detect the thrust of the torsion drive cylinder on the crank.

7. The tire rigidity testing machine according to claim 5, characterized in that: The radial loading part includes a radial loading platform and a radial loading cylinder, and the radial loading cylinder drives the radial loading platform to move toward or away from the tire; The torsion drive cylinder is fixedly disposed on the radial loading platform, and the connecting portion is rotationally connected to the radial loading platform.

8. The tire rigidity testing machine according to claim 4, characterized in that: The longitudinal and transverse loading parts include longitudinal and transverse loading platforms and longitudinal and transverse driving cylinders. The longitudinal and transverse driving cylinders drive the longitudinal and transverse loading platforms to move. The longitudinal and transverse driving cylinders are fixedly arranged on the twisting platform, and the longitudinal and transverse loading platforms are slidably arranged on the twisting platform.

9. The tire rigidity testing machine according to any one of claims 1 to 8, characterized in that: It also includes two first fixing seats arranged opposite to each other, wherein the first fixing seats have special-shaped mounting holes formed therein; The workstation shaft is provided with a special-shaped shaft segment, the cross-sectional profile of the special-shaped shaft segment is non-circular, and the special-shaped shaft segment is adapted to the special-shaped mounting hole to keep the workstation shaft in the locked state.

10. The tire rigidity testing machine according to claim 9, characterized in that: It also includes two second fixed seats arranged opposite to each other. A bearing is arranged on the workstation shaft, and the bearing is connected to the second fixed seats. After the limitation of the workstation shaft by the first fixed seats is released, the workstation shaft can rotate.

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