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Method for preventing large hierarchical aircraft tire cord fabric backward-packed ends from being disengaged

A technology of aviation tires and turned-up ends, which is applied to the reinforcement layer of pneumatic tires, tire parts, transportation and packaging, etc. It can solve problems such as tire blowouts, hidden safety hazards, and disengagement, so as to ensure the strength and load of the carcass Ability to prevent delamination and bulging, and the effect of not being easy to disengage

Inactive Publication Date: 2014-08-13
中国化工集团曙光橡胶工业研究设计院有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carcass plies of large-scale aviation tires have many layers, generally up to 12 or more layers, and they run at high speed under the action of large loads for a long time, and the temperature between the plies rises sharply due to the shear force. The carcass is thick and heat dissipation is difficult. The turned-up end of the multi-layer ply is very easy to come off due to the decrease of the bonding strength at high temperature, causing the carcass to delaminate and bulge, and serious tire blowouts may occur, posing safety hazards

Method used

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  • Method for preventing large hierarchical aircraft tire cord fabric backward-packed ends from being disengaged
  • Method for preventing large hierarchical aircraft tire cord fabric backward-packed ends from being disengaged

Examples

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Embodiment

[0014] refer to Figure 1-2 , a method capable of effectively preventing large-level aircraft tire ply turns-up ends from coming off. The tire includes 12 layers of carcass cords, each layer of ply turns-up ends, and a ply end sealing film. When laminating the process, the cords of the 1st to 6th layers are 1# reversed cord drum 1, the cords of the 7th to 10th layers are 2# reversed cord drums 2, and the cords of the 11th to 12th layers are 3# positive corded drums. The bonding difference between layers of cords is 10mm. Set two ply end sealing films 4 with a thickness of 0.5mm and a width of 35mm at the ends 3 on both sides of the 1# cord barrel, that is, set a piece of film 4 between the ends of every three layers of cord, and between two pieces of film 4 For seamless docking, there are a total of 4 films 4 in the entire cord tube. Set one ply end sealing film 4 with a thickness of 0.5 mm and a width of 50 mm at the ends of both sides of the 2# cord barrel 2, and there are...

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Abstract

The invention discloses a method capable of effectively preventing large hierarchical aircraft tire cord fabric backward-packed ends from being disengaged. Backward-packed cord fabric layers and forward-packed cord fabric cord fabric layers are included. The method is characterized in that ends at two sides of the backward-packed cord fabric layers are respectively provided with more than 6 cord fabric end sealing adhesive sheets of 0.5mm thickness and 35-50mm width; and forward-packed cord drum ends are positioned at the bead base, and sealing adhesive sheets are not plastered. The invention has advantages as follows: cord fabric end sealing adhesive sheets can make each cord fabric back-packed ends to be separated from carcass cord threads at corresponding positions; generation of heat by friction between carcass cord fabric ends and carcass cord threads under stress state of a tire is prevented; partial friction stress and energy are absorbed; and cord threads and cord thread ends are effectively prevented from being damaged. Meanwhile, by the binding effect of the sealing adhesive sheets, each cord fabric back-packed ends can be firmly adhered to a carcass. It is ensured that relative motion and displacement are avoided and the ends are not easy to disengage at high temperature. The cord fabric layers are effectively prevented from delaminating and swelling, and carcass strength and loading capacity of a tire are guaranteed.

Description

technical field [0001] The invention relates to aviation tires, in particular to a method for preventing the ply ends of large-level aviation tires from coming off. Background technique [0002] With the continuous development of the aviation industry, the technical requirements of aircraft for the supporting aviation tires are constantly increasing, which is reflected in the continuous increase of the load, speed and air pressure on the tires, and the requirements for the tires are becoming more and more stringent. The carcass plies of large-scale aviation tires have many layers, generally up to 12 or more layers, and they run at high speed under the action of large loads for a long time, and the temperature between the plies rises sharply due to the shear force. The carcass is thick and difficult to dissipate heat. The turned-up ends of the multi-layer plies are easy to come off due to the decrease of the bonding strength at high temperature, resulting in delamination and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C9/00B60C9/02
Inventor 马英黄志义俸洪舜
Owner 中国化工集团曙光橡胶工业研究设计院有限公司
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