Auxiliary tool for measuring surface roughness of tire

By designing auxiliary tooling, using hydraulic connectors and rotating modules to control the contact between the small surface roughness instrument and the tire surface, the problem of measuring accuracy in the prior art is easily affected by manual handheld force and tire curve, and the tire surface roughness is realized. High-precision measurement.

CN222353535UActive Publication Date: 2025-01-14SAILUN GRP CO LTD
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Patent Information

Application Number
CN202420885935.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-26
Publication Date
2025-01-14
Estimated Expiration
2034-04-26

AI Technical Summary

Technical Problem

The prior art is susceptible to manual handheld force and tire curve when measuring tire surface roughness, resulting in measurement accuracy errors, especially when measuring the tire circumferential and transverse directions.

Method used

An auxiliary tooling including a control module, a tire fixed rotation module, a hydraulic connector and a pocket surface roughness instrument was designed. The auxiliary support is driven to move up and down greatly through the hydraulic connector, and the tire fixed rotation module rotates, and the auxiliary support drives the pocket surface roughness. The meter moves up and down slightly to ensure the control of the force and angle of the instrument contact with the tire surface.

Benefits of technology

Accurate measurement of different positions and transverse blocks on the circumference of the tire surface is achieved, which avoids the influence of the tire curve, ensures the consistency of measurement accuracy and contact force, and reduces measurement errors.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an auxiliary tool for measuring the surface roughness of a tire. The auxiliary tool comprises a control module, a tire fixing and rotating module, a hydraulic connecting piece, an auxiliary bracket and a pocket-size surface roughness instrument, the control module is used for controlling the hydraulic connecting piece to drive the auxiliary support to move up and down in a large range, controlling the tire fixing and rotating module to rotate, controlling the auxiliary support to drive the pocket-size surface roughness instrument to move up and down in a small range and controlling the force and angle when the pocket-size surface roughness instrument makes contact with the tire surface. The tire fixing and rotating module is used for bearing and rotating a tire; the hydraulic connecting piece is used for driving the auxiliary bracket to greatly move up and down; the auxiliary support is used for driving the pocket surface roughness instrument to move transversely and move up and down in a small range. The pocket-size surface roughness meter is used for measuring the surface roughness of the tire. According to the utility model, not only can errors caused by manual measurement be avoided, but also measurement errors caused by a tire curved surface can be avoided.
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Description

Technical Field

[0001] The utility model relates to the technical field of tire surface detection, in particular to an auxiliary tooling for measuring the surface roughness of a tire. Background Art

[0002] Before conducting the wet skid test study on worn tires according to the national standard GB, UN regulation UN R117 and global technical regulation GTR 16 related to the wet performance of worn tires, it is necessary to prepare worn tire samples. The more convenient method now is to use a tire grinder to prepare worn tires. Compared with naturally worn tires, the grinding process is economical and time-saving, and one of the criteria for judging whether the tire is grinded is that the surface roughness of the tire meets certain requirements.

[0003] Nowadays, when measuring the surface roughness of tires, most tire factories or third-party testing agencies that have tire grinding machines use probe contact surface roughness meters. During the measurement process, the surface roughness meter is held handheld and placed on the tire tread block for measurement, and the measurement accuracy is easily affected. On the one hand, the tire surface is an elastic body. When the roughness meter is manually held handheld for measurement, different people use different strengths or the same person uses different strengths at different measurement points, which will lead to different contact forces between the surface roughness meter probe and the tire surface, resulting in errors in measurement accuracy; on the other hand, the tire surface is a curved surface, and the probe contact surface roughness meter will produce measurement errors when measuring in the lateral or circumferential direction of the tire. Utility Model Content

[0004] In view of the above problems, the utility model provides an auxiliary tool for measuring the surface roughness of a tire, which solves the problems mentioned in the background technology.

[0005] The embodiment of the utility model provides an auxiliary tool for measuring the surface roughness of a tire, comprising a control module (1), a tire fixing and rotating module (2), a hydraulic connection piece (3), an auxiliary bracket (4) and a pocket surface roughness meter (5);

[0006] The control module (1) is fixedly mounted on the ground and is controllably connected to the tire fixing and rotating module (2), the hydraulic connector (3) and the auxiliary bracket (4), and is used to control the hydraulic connector (3) to drive the auxiliary bracket (4) to move up and down in a large range, to control the rotation of the tire fixing and rotating module (2), to control the auxiliary bracket (4) to drive the pocket surface roughness meter (5) to move up and down in a small range, and to control the force and angle of contact between the pocket surface roughness meter (5) and the tire surface;

[0007] The tire fixing and rotating module (2) is fixedly mounted on the ground and is used to carry and rotate the tire;

[0008] The hydraulic connector (3) is L-shaped and is fixedly mounted on the top of the tire fixing and rotating module (2) to drive the auxiliary bracket (4) to move up and down significantly;

[0009] The upper end of the auxiliary bracket (4) is fixedly mounted on the lower end of the horizontal part of the hydraulic connector (3) and is used to drive the pocket surface roughness tester (5) to move horizontally and up and down in a small range;

[0010] The pocket surface roughness meter (5) is installed at the lower end of the auxiliary bracket (4) and is used to measure the surface roughness of the tire.

[0011] In the preferred technical solution of the auxiliary tooling for measuring the surface roughness of a tire, the tire fixing and rotating module (2) comprises a motor transmission assembly (201), a base plate (202), a rotating shaft (203) and a tire connecting plate (204); the base plate (202) is fixedly mounted on the ground by bolts; the motor transmission assembly (201) is fixedly mounted on the base plate (202); the motor transmission assembly (201) is externally wrapped with a shell and internally comprises a motor and a rotary encoder; the output end of the motor is connected to one end of the rotating shaft (203); and the tire connecting plate (204) is fixedly connected to the other end of the rotating shaft (203).

[0012] In the preferred technical solution of the auxiliary tooling for measuring tire surface roughness, the hydraulic connector (3) comprises a vertical hydraulic rod and a crossbar fixedly connected to the top of the vertical hydraulic rod, and the bottom of the vertical hydraulic rod is fixedly mounted on the top of the housing of the motor transmission assembly (201).

[0013] In the preferred technical scheme of the auxiliary tooling for measuring the surface roughness of a tire, the auxiliary bracket (4) comprises a micro motor (401), a screw guide rail (402), a hydraulic rod (403), a pressure sensor (404), a clamping frame (405) and a fastening bolt (406); the micro motor (401) is fixedly mounted on the side of the screw guide rail (402) and connected to the screw of the screw guide rail (402); the screw guide rail (402) is fixedly mounted on the lower end of the horizontal part of the hydraulic connector (3); the top end of the hydraulic rod (403) is fixedly mounted on the sliding block of the screw guide rail (402); the pressure sensor (404) is fixedly mounted on the bottom end of the hydraulic rod (403); the top end of the clamping frame (405) is mounted on the pressure sensor (404) via a rotating shaft; the clamping frame (405) is U-shaped with an opening facing downward, and a fastening bolt (406) is provided through the side thereof.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model can measure the surface roughness of different positions on the tire surface in the circumferential direction, and measure the surface roughness of different pattern blocks by moving laterally on the tire surface, avoiding the influence of the circumferential curved surface of the tire;

[0016] 2. The utility model can achieve smooth fitting between the surface roughness meter and the tread, thus improving the measurement accuracy;

[0017] 3. The utility model can control the contact force between the surface roughness meter and the tread to be the same, thereby avoiding measurement errors caused by different contact forces during measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following describes the implementation of the auxiliary tooling for measuring the surface roughness of a tire according to the present invention with reference to the accompanying drawings.

[0019] Figure 1 A schematic diagram of the overall structure of an auxiliary tooling for measuring tire surface roughness provided by the utility model;

[0020] Figure 2 It is a structural schematic diagram of the tire fixing and rotating module of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the auxiliary bracket of the utility model. DETAILED DESCRIPTION

[0022] First, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific applications.

[0023] Secondly, it should be noted that in the description of the present invention, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0024] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments:

[0026] See also Figure 1-3 , an auxiliary tooling for measuring tire surface roughness provided in this embodiment includes a control module 1, a tire fixing and rotating module 2, a hydraulic connector 3, an auxiliary bracket 4 and a pocket surface roughness meter 5;

[0027] The control module 1 is fixedly assembled on the ground and is controlled and connected with the tire fixing and rotating module 2, the hydraulic connector 3 and the auxiliary bracket 4, and is used to control the hydraulic connector 3 to drive the auxiliary bracket 4 to move up and down in a large range, to control the rotation of the tire fixing and rotating module 2, to control the auxiliary bracket 4 to drive the pocket surface roughness meter 5 to move up and down in a small range, and to control the force and angle when the pocket surface roughness meter 5 contacts the tire surface;

[0028] The tire fixing and rotating module 2 is fixedly mounted on the ground and is used to carry and rotate the tire;

[0029] The hydraulic connector 3 is L-shaped and is fixedly mounted on the top of the tire fixing and rotating module 2 to drive the auxiliary bracket 4 to move up and down significantly;

[0030] The upper end of the auxiliary bracket 4 is fixedly assembled on the lower end of the horizontal part of the hydraulic connector 3, and is used to drive the pocket surface roughness tester 5 to move horizontally and up and down with a small amplitude;

[0031] The pocket surface roughness meter 5 is installed at the lower end of the auxiliary bracket 4 and is used to measure the surface roughness of the tire.

[0032] In the preferred technical scheme of the auxiliary tooling for measuring the surface roughness of the tire, the tire fixing and rotating module 2 includes a motor transmission assembly 201, a base plate 202, a rotating shaft 203 and a tire connecting plate 204. The base plate 202 is fixedly mounted on the ground by bolts. The motor transmission assembly 201 is fixedly assembled on the base plate 202. The motor transmission assembly 201 is wrapped with a shell on the outside and includes a motor and a rotary encoder inside. The output end of the motor is connected to one end of the rotating shaft 203, and the tire connecting plate 204 is fixedly connected to the other end of the rotating shaft 203.

[0033] In the preferred technical solution of the auxiliary tooling for measuring tire surface roughness, the hydraulic connector 3 includes a vertical hydraulic rod and a crossbar fixedly connected to the top of the vertical hydraulic rod, and the bottom of the vertical hydraulic rod is fixedly assembled on the top of the housing of the motor transmission assembly 201.

[0034] In the preferred technical scheme of the auxiliary tooling for measuring the surface roughness of the tire, the auxiliary bracket 4 includes a micro motor 401, a screw guide rail 402, a hydraulic rod 403, a pressure sensor 404, a clamping frame 405 and a fastening bolt 406. The micro motor 401 is fixedly mounted on the side of the screw guide rail 402 and is connected to the screw of the screw guide rail 402. The screw guide rail 402 is fixedly mounted on the lower end of the horizontal part of the hydraulic connector 3. The top of the hydraulic rod 403 is fixedly mounted on the sliding block of the screw guide rail 402. The pressure sensor 404 is fixedly mounted on the bottom end of the hydraulic rod 403. The top of the clamping frame 405 is mounted on the pressure sensor 404 through a rotating shaft. The clamping frame 405 is U-shaped with an opening facing downward, and a fastening bolt 406 is provided through its side.

[0035] The workflow of this utility model is as follows:

[0036] Step 1: The control module 1 sends a command to the hydraulic connector 3 to control the vertical hydraulic rod of the hydraulic connector 3 to extend upward, driving the pocket surface roughness meter 5 to a certain height above the first tread block on the surface of the tire to be tested, so as to prevent the tire from hitting the pocket surface roughness meter 5;

[0037] Step 2: Fix the tire to be tested on the tire connecting plate 204 on the tire fixing and rotating module 2 by means of bolts;

[0038] Step 3: The control module 1 sends a command to the hydraulic connector 3 to control the vertical hydraulic rod of the hydraulic connector 3 to retract downward, driving the pocket surface roughness tester 5 to approach the tire surface and then stop moving;

[0039] Step 4: The control module 1 sends a command to the hydraulic rod 403 to control the hydraulic rod 403 to extend downward, driving the pocket surface roughness tester 5 to contact the first tread block on the tire surface;

[0040] Step 5: The clamping frame 405 is adjusted to drive the pocket surface roughness tester 5 to rotate around the rotation axis at a certain angle, so that the pocket surface roughness tester 5 fits the surface of the first tread block of the tire with a certain inclination angle;

[0041] Step 6: The control module 1 sends a command to the hydraulic rod 403 to control the hydraulic rod 403 to continue to extend downward, driving the pocket surface roughness tester 5 to apply a certain pressure on the first tread block of the tire;

[0042] Step 7: The pressure sensor 404 transmits the information that a certain pressure has been reached to the control module 1, and the control module 1 issues a stop movement command, and the hydraulic rod 403 stops moving;

[0043] Step 8: Start the pocket surface roughness tester 5 to measure the surface roughness of the first tread block of the tire;

[0044] Step 9: After the measurement is completed, the control module 1 sends a command to the hydraulic rod 403 to control the hydraulic rod 403 to retract upward, driving the pocket surface roughness meter 5 to leave the surface of the first tread block of the tire;

[0045] Step 10: The control module 1 sends a command to the hydraulic connector 3 to control the vertical hydraulic rod of the hydraulic connector 3 to extend upward, driving the pocket surface roughness tester 5 to a certain height above the first tread block on the tire surface to be measured;

[0046] Step 11: The tire fixing and rotating module 2 controls the tire to rotate a certain angle through the rotary encoder thereon, changes to the next measuring position, and repeats the above steps.

[0047] The embodiments of the present invention have been described so far in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An auxiliary tool for measuring tire surface roughness, characterized in that: It comprises a control module (1), a tire fixing and rotating module (2), a hydraulic connection piece (3), an auxiliary bracket (4) and a pocket surface roughness meter (5); The control module (1) is fixedly mounted on the ground and is controllably connected to the tire fixing and rotating module (2), the hydraulic connector (3) and the auxiliary bracket (4), and is used to control the hydraulic connector (3) to drive the auxiliary bracket (4) to move up and down in a large range, to control the rotation of the tire fixing and rotating module (2), to control the auxiliary bracket (4) to drive the pocket surface roughness meter (5) to move up and down in a small range, and to control the force and angle of contact between the pocket surface roughness meter (5) and the tire surface; The tire fixing and rotating module (2) is fixedly mounted on the ground and is used to carry and rotate the tire; The hydraulic connector (3) is L-shaped and is fixedly mounted on the top of the tire fixing and rotating module (2) to drive the auxiliary bracket (4) to move up and down significantly; The upper end of the auxiliary bracket (4) is fixedly mounted on the lower end of the horizontal part of the hydraulic connector (3) and is used to drive the pocket surface roughness tester (5) to move horizontally and up and down in a small range; The pocket surface roughness meter (5) is installed at the lower end of the auxiliary bracket (4) and is used to measure the surface roughness of the tire.

2. The auxiliary tool for measuring tire surface roughness according to claim 1, characterized in that: The tire fixing and rotating module (2) comprises a motor transmission assembly (201), a base plate (202), a rotating shaft (203) and a tire connecting plate (204); the base plate (202) is fixedly mounted on the ground by bolts; the motor transmission assembly (201) is fixedly mounted on the base plate (202); the motor transmission assembly (201) is externally wrapped with a shell and internally comprises a motor and a rotating encoder; the output end of the motor is connected to one end of the rotating shaft (203); and the tire connecting plate (204) is fixedly connected to the other end of the rotating shaft (203).

3. The auxiliary tool for measuring tire surface roughness according to claim 1, characterized in that: The hydraulic connection member (3) comprises a vertical hydraulic rod and a crossbar fixedly connected to the top end of the vertical hydraulic rod, and the bottom end of the vertical hydraulic rod is fixedly assembled on the top end of the housing of the motor transmission assembly (201).

4. The auxiliary tool for measuring tire surface roughness according to claim 1, characterized in that: The auxiliary bracket (4) comprises a micro motor (401), a screw guide rail (402), a hydraulic rod (403), a pressure sensor (404), a clamping frame (405) and a fastening bolt (406); the micro motor (401) is fixedly mounted on the side of the screw guide rail (402) and connected to the screw of the screw guide rail (402); the screw guide rail (402) is fixedly mounted on the lower end of the horizontal part of the hydraulic connector (3); the top end of the hydraulic rod (403) is fixedly mounted on the sliding block of the screw guide rail (402); the pressure sensor (404) is fixedly mounted on the bottom end of the hydraulic rod (403); the top end of the clamping frame (405) is mounted on the pressure sensor (404) via a rotating shaft; the clamping frame (405) is U-shaped with an opening facing downward, and a fastening bolt (406) is provided through the side of the clamping frame.