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A Design Method of Bead Parameters Based on Bead Pressure

A parametric design, bead technology, applied in design optimization/simulation, special data processing applications, geometric CAD, etc., can solve problems such as high cost and low efficiency, and achieve the effect of shortening the time required for design

Active Publication Date: 2020-02-07
GITI RADIAL TIRE (ANHUI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure that the tire interference fit is at an appropriate level, in the prior art, a large amount of trial and error is required to determine the size design of the bead part, which has the disadvantage of high efficiency and low cost

Method used

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  • A Design Method of Bead Parameters Based on Bead Pressure
  • A Design Method of Bead Parameters Based on Bead Pressure
  • A Design Method of Bead Parameters Based on Bead Pressure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: According to the different design requirements, assuming that the 205 / 55R16 specification adopts a design of 1 layer of cord fabric without steel wire wrapping, the engagement diameter D of the mold steel ring and the inner diameter d of the traveler can be obtained t The thickness G of the formed bead bottom material is as Figure 4 As shown, assuming G=2.76mm, then get d t -D=2×G=5.52mm, then according to image 3 The engagement diameter D of the die ring and the inside diameter d of the traveler shown t relationship, it is easy to get the traveler diameter d t is 409.52mm, and the engagement diameter D of the mold steel ring is 404mm.

Embodiment 2

[0039] Embodiment two: Assume that there is an existing mold steel ring, and it is known that its engagement diameter D is 404mm, then according to image 3 Engagement diameter D of the die ring shown and inner diameter d of the traveler t The relationship between the inner diameter of the traveler d t It is 409.52mm. And the design of the material thickness G at the bottom of the bead should also satisfy (d t -D) / 2=2.76mm requirement.

Embodiment 3

[0040] Embodiment 3: Assume that there is an existing traveler, and the inner diameter d of the traveler t is 409.52mm, then according to image 3 Engagement diameter D of the die ring shown and inner diameter d of the traveler t According to the relationship, the diameter D of the mold steel ring is 404mm. And the design of the material thickness G at the bottom of the bead should also satisfy (d t -D) / 2=2.76mm requirement.

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Abstract

The invention provides a method for designing bead parameters based on bead pressure. Based on the specific required bead pressure range, the engagement diameter D of the mold steel ring and the inner diameter d of the bead ring are obtained by using the formula t The functional relationship, so as to calculate the value range of the engagement diameter D of the mold steel ring and the inner diameter d of the steel ring t The value range of the bead bottom material thickness G is used to calculate D and d respectively t value. The present invention utilizes the relationship between the compression stiffness of the rubber material in theory of tire mechanics, the size of the rubber material, and its shape to determine the size of the rubber material at the bead, so as to ensure that the degree of interference fit at the bead, that is, the pressure of the bead, is at an appropriate level. It is used to set the engagement diameter of the mold steel ring and the reference of the inner diameter of the bead ring, and shorten the time required for the design of the bead part.

Description

technical field [0001] The invention relates to the technical field of tires, in particular to a method for designing bead parameters based on bead pressure. Background technique [0002] As we all know, tires are generally assembled to the rim in the form of interference fit. A sufficient amount of interference fit ensures the close contact of the tire rim, so that the steering force of the vehicle can be transmitted to the tire and then to the road surface without causing any damage. Slip between tire rims occurs. However, if the interference is too large, it will make tire assembly difficult, and even the danger of inflation explosion will occur. [0003] The degree of tire interference fit basically depends on the design of the material size of the bead part, especially the inner diameter of the bead ring and the engagement diameter of the mold bead. In order to ensure that the tire interference fit is at an appropriate level, in the prior art, a large amount of trial ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/15G06F30/17
Inventor 余同生查磊张伟王平
Owner GITI RADIAL TIRE (ANHUI) CO LTD
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