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Flexible brake hose for rail transit and preparation method thereof

A brake hose, rail transit technology, applied in the direction of hose, pipe, application, etc., can solve the problems of train running safety threat, wheel tread abrasion, brake hose leakage, etc., to achieve good buffer damping effect, The effect of reducing vibration and protecting the inside of the hose

Inactive Publication Date: 2018-02-23
滁州远方车船装备工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there have been some leaks and bursts of brake hoses, which have caused vehicle brakes to be locked, followed by tread abrasions on wheelsets, and even pose a threat to train safety

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] A brake hose for rail transit, comprising an EPDM inner rubber layer, a glass fiber cloth reinforced layer, an EPDM sandwich film, an aramid fiber braided layer, a damping layer, and an EPDM outer rubber layer from the inside to the outside; the inner rubber layer and the reinforced layer , the film in the sandwich, the braided layer, the damping layer and the outer rubber layer are all bonded by hot vulcanized glue.

[0018] The damping layer is formed by mixing poly(isoprene-block-ethylene oxide) block copolymer vesicles with heat vulcanized glue, and then brushing, wherein the particle size of the copolymer vesicles is 50nm.

[0019] The preparation method of this poly(isoprene-block-ethylene oxide) block copolymer is: poly(isoprene-block-ethylene oxide) block copolymer is dropped in methylene chloride , stir until it completely dissolves, and make a poly(isoprene-block-ethylene oxide) block copolymer solution with a concentration of 100g / L, then add an appropriate a...

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PUM

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Abstract

The invention discloses a flexible brake hose for the rail transit. The flexible brake hose comprises an inner rubber layer, an enhancement layer, a sandwiched rubber sheet, a braiding layer, a damping layer and an outer rubber layer from inside to outside. The inner rubber layer, the enhancement layer, the sandwiched rubber sheet, the braiding layer, the damping layer and the outer rubber layer are bonded through heat vulcanized glue.

Description

technical field [0001] The invention relates to the technical field of brake hoses, in particular to a brake hose for rail transit and a preparation method thereof. Background technique [0002] The brake hose is an important part of the braking system connecting the railway rolling stock and the vehicle, and plays the role of braking force transmission to ensure the normal braking relief of the train. Since 1998, the brake hoses of railway wagons have been gradually upgraded from cloth hoses to assembly hoses, and the structural performance of the hoses has been improved to ensure the braking performance of trains. [0003] According to the requirements of GB7542-2003 "Rubber Hose for Railway Locomotive Braking", the brake hose is composed of an inner rubber layer, a rubber cloth layer, an outer rubber layer and a head rubber. The size of the hose is 36±1mm in inner diameter, 53±1mm in outer diameter, the thickness of the outer rubber layer is greater than 1.2mm, and the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/08B29D23/00
CPCF16L11/08B29D23/001B29D2009/00
Inventor 戴新民葛正兵
Owner 滁州远方车船装备工程有限公司