Tire section inner perimeter measuring tool

Abstract

The utility model relates to the technical field of tire analysis, in particular to a tire section inner perimeter measuring tool, which comprises a flexible rule and a clamp arranged at one end of the flexible rule, scale marks are arranged on the flexible rule, a magnetic strip is arranged in the flexible rule, the clamp comprises a base connected with the flexible rule, and the flexible rule is provided with a magnetic strip. Clamping arms are symmetrically arranged on the two sides of the base, screw holes are formed in the tail ends of the clamping arms, a screw sequentially penetrates through the screw holes in the clamping arms to be in threaded connection with the clamping arms, and threads at the two ends of the screw are opposite. The tire section inner perimeter measuring tool provided by the utility model has the advantages of high precision, strong adaptability, simplicity and convenience in operation, strong durability, reasonable design and the like, can effectively overcome the defects of the conventional tire inner perimeter measuring tool, and provides powerful support for tire analysis and optimization.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tire analysis technical field, concretely relates to a tire section inner circumference measuring tool. BACKGROUND

[0002] In the process of in-depth analysis and optimization of tire performance, it is often necessary to accurately measure the tire section inner circumference, which is crucial for evaluating whether the tire flatness positioning is appropriate and ensuring the stability and durability of the tire under various road conditions. Currently, the commonly used tire inner circumference measurement methods in the industry mainly include compass method and rope measurement method, but both methods have certain limitations and deficiencies.

[0003] The compass method is a relatively traditional measurement method, which measures the distance of the compass point set on the inner surface of the tire and measures the position at multiple locations to try to outline the approximate profile of the inner surface of the tire. However, the defect of this method is that it estimates the inner circumference of the tire based on the principle of straight line fitting, while the inner surface of the tire is actually a complex curved surface, so the data obtained by this method often has a large deviation from the actual inner surface curved surface data, making it difficult to ensure the accuracy and reliability of the measurement.

[0004] The rope measurement method is another common tire inner circumference measurement method, which uses a soft rope or flexible ruler to measure the inner surface of the tire section. In theory, this method can be more close to the actual shape of the inner surface of the tire, but in actual operation, due to the material and flexibility of the rope or flexible ruler, they are difficult to perfectly fit the inner surface of the tire. Especially in the case of complex texture or irregular shape on the inner surface of the tire, if a lot of time is not spent on fine adjustment and calibration, it is easy to cause large errors in the measurement results.

[0005] Therefore, although the compass method and the rope measurement method can meet the basic needs of tire inner circumference measurement to some extent, they all have their own limitations, making it difficult to ensure measurement efficiency while achieving high-precision measurement. At present, there is no tool on the market that can solve the problem of tire inner circumference measurement. UTILITY MODEL CONTENT

[0006] To solve the problems existing in the prior art, the utility model provides a tire section inner circumference measuring tool.

[0007] In order to achieve the above object, the technical scheme of the utility model is: a tire section inner circumference measuring tool, including a flexible ruler and a clamp arranged at one end of the flexible ruler, the flexible ruler is provided with a scale line, the inside of the flexible ruler is provided with a magnetic strip, the clamp includes a base connected with the flexible ruler, the base is symmetrically provided with a clamping arm on both sides, the clamping arm is provided with a screw hole at the end, a screw rod is sequentially threaded through the screw hole in the clamping arm and is threadedly connected with the clamping arm, and the threads on both ends of the screw rod are opposite.

[0008] Further, the clamping arm is rotatably arranged on the base.

[0009] Further, the clamping arm is arc-shaped in whole.

[0010] Further, the cross section of the flexible ruler is hexagonal structure, and the angle of each internal angle of the hexagon is 90°-150°.

[0011] Further, the upper part of the cross section of the flexible ruler is isosceles trapezoidal, and the lower part is rectangular.

[0012] Further, the width of the flexible ruler is 14-17mm, the lower width is 18-20mm, the thickness is 3mm, and the length is 1520-1560mm.

[0013] Further, the width of the magnetic strip is 9-11mm, the thickness is 1.8-2.2mm, and the length is 1500-1510mm.

[0014] Further, the distance between the magnetic strip and the side of the flexible ruler attached to the tire section is 0.2-0.3mm.

[0015] The utility model reaches the beneficial effects that:

[0016] 1. The utility model discloses a magnetic strip, so that the flexible ruler can be closely attached to the inner surface of the tire section, avoiding the problem that the rope or the flexible ruler is difficult to perfectly attach to the inner surface of the tire in the traditional rope measuring method, thereby significantly improving the measuring precision.

[0017] 2. The design of the opposite threads on both ends of the screw rod allows the clamping arm to move inward or outward simultaneously, and the clamp can clamp different shapes and sizes of tire sections, improving the versatility and practicality of the utility model.

[0018] 3. The cross section of the flexible ruler is hexagonal structure, and each internal angle is a right angle or an obtuse angle, effectively avoiding the risk of damage and fracture due to bumping, prolonging the service life of the flexible ruler. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic diagram of the utility model;

[0020] Figure 2 It is the whole structure schematic diagram of the clamp;

[0021] Figure 3 It is the whole structure schematic diagram of the flexible ruler;

[0022] Figure 4 It is the side surface section schematic diagram of the flexible ruler;

[0023] Figure 5 It is the use state of the utility model Figure 1 ;

[0024] Figure 6 It is the use state of the utility model Figure 2 .

[0025] Marking in the drawing: 1, flexible ruler; 2, clamp; 3, magnetic stripe; 4, tire section; 21, base; 22, clamping arm; 23, screw rod. DETAILED DESCRIPTION

[0026] In order to better understand the purpose, structure and function of the utility model, the utility model a tire section inner perimeter measuring tool is further described in detail below in combination with the drawings.

[0027] As Figures 1 to 6 shown, a tire section inner perimeter measuring tool, including flexible ruler 1, flexible ruler 1 is provided with scale line, scale line is convenient for measuring personnel to read, flexible ruler 1 inside is provided with magnetic stripe 3, magnetic stripe 3 can be bent together with flexible ruler 1, magnetic stripe 3 is used to adsorb flexible ruler 1 on the tire section, flexible ruler 1 and the tire section inner perimeter are closely combined, prevent error when measuring, ensure the accuracy of the measurement result.

[0028] One end of flexible ruler 1 is provided with clamp 2, clamp 2 includes base 21 connected with flexible ruler 1, base 21 is provided with through hole matched with the shape of flexible ruler 1, both sides of base 21 are rotatably provided with clamping arm 22, clamping arm 22 is hinged on base 21, clamping arm 22 is arc structure as a whole, matched with the shape of tire section, the other end of clamping arm 22 is provided with screw hole, one screw rod 23 is screw-connected in the screw hole of two clamping arms 22, the rotation direction of screw thread in the middle to both ends of screw rod 23 is opposite, screw rod 23 can drive left and right two clamping arms 22 to move inwards or outwards simultaneously, for clamping the tire section with different thicknesses.

[0029] The material of the flexible ruler 1 mainly includes plastic, PVC, glass fiber and metal, the flexible ruler 1 can be bent and folded, and is suitable for measuring the inner circumference of the tire section which needs to be attached to a curve. The cross section of the flexible ruler 1 is a hexagonal structure, the angle of each internal angle of the hexagon is 90°-150°, the upper part of the cross section of the flexible ruler 1 is an isosceles trapezoid, and the lower part is a rectangle, the width of the rectangle is relatively narrow, each internal angle of the cross section of the flexible ruler 1 is a right angle or an obtuse angle, the flexible ruler 1 can be effectively prevented from being damaged and broken due to collision in the use process, the service life of the flexible ruler 1 is prolonged, and the flexible ruler 1 is prevented from scratching the measurer due to the sharp angle of the acute angle.

[0030] The upper width of the flexible ruler 1 is 14-17 mm, the lower width is 18-20 mm, the thickness is 3 mm, the length is 1520-1560 mm, the magnetic stripe 3 is arranged in the interior of the flexible ruler 1, the distance between the magnetic stripe 3 and the side of the flexible ruler 1 attached to the tire section (the plane where the lower width of the flexible ruler 1 is located) is 0.2-0.3 mm, the width of the magnetic stripe 3 is 9-11 mm, the thickness is 1.8-2.2 mm, and the length is 1500-1510 mm.

[0031] In the use, the measurer rotates the screw rod 23, the clamping arms 22 on the left and right sides move to the opposite directions, the distance between the clamping arms 22 on the left and right sides becomes larger, when the width between the clamping arms 22 is greater than the width of the tire section bead, the clamp 2 is sleeved on the tire section, the screw rod 23 is reversely rotated, the clamping arms 22 on the left and right sides are close to the middle, the tire section is clamped, the flexible ruler 1 is adsorbed on the tire section through the magnetic stripe 3, and is perfectly attached to the inner surface of the tire section, and the size of the inner circumference of the tire section is read through the scale line on the flexible ruler 1.

[0032] It can be understood that the utility model is described through some embodiments, and various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and range of the utility model, which is known by those skilled in the art. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the utility model without departing from the spirit and range of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the range protected by the utility model.

Claims

1. A tire cross-sectional inner circumference measuring tool characterized by: The utility model relates to a soft ruler (1) and the clamp (2) of setting in the one end of soft ruler (1), the soft ruler (1) is provided with scale line, the inside of soft ruler (1) is provided with magnetic stripe (3), the clamp (2) includes the base (21) connected with soft ruler (1), the base (21) both sides symmetry is provided with the clamping arm (22), the clamping arm (22) end is provided with screw hole, screw rod (23) passes through the screw hole in clamping arm (22) and is connected with clamping arm (22) screw thread connection, the screw thread of screw rod (23) both ends is opposite.

2. A tool for measuring the inner circumference of a tire cross section according to claim 1, wherein: The clamping arm (22) is rotatably arranged on the base (21).

3. A tool for measuring the inner circumference of a tire cross section according to claim 1, wherein: The clamping arm (22) is arc-shaped in whole.

4. A tire cross-sectional inner circumference measuring tool as defined in claim 1, wherein: The cross section of the soft ruler (1) is hexagonal structure, and each internal angle of the hexagon is 90°-150°.

5. A tool for measuring the inner circumference of a tire cross section according to claim 4, wherein: The upper part of the cross section of the soft ruler (1) is isosceles trapezoidal, and the lower part is rectangular.

6. A tire cross-sectional inner circumference measuring tool as defined in claim 1, wherein: The width of the soft ruler (1) is 14-17mm, the lower width is 18-20mm, the thickness is 3mm, and the length is 1520-1560mm.

7. A tool for measuring the inner circumference of a tire cross section according to claim 6, wherein: The width of the magnetic stripe (3) is 9-11mm, the thickness is 1.8-2.2mm, and the length is 1500-1510mm.

8. A tire cross-sectional inner circumference measuring tool as defined in claim 1, wherein: The distance between the magnetic stripe (3) and the side of the soft ruler (1) attached to the tire cross section is 0.2-0.3mm.

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