Composite pipe with gradually varied axial strength

A technology of axial strength and composite pipes, which is applied in the field of composite pipes, can solve the problems of endangering the life and property safety of train personnel, damage to structural components, etc., and achieve the effects of complete structural fragmentation, stable energy absorption, and increased load strength

Inactive Publication Date: 2018-11-02
HARBIN UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the relative uniformity of the strength of each section in the axial direction of the composite pipe, when two trains running in opposite directions collide, the initial crush peak value of the composite pipe will generally be higher than the allowable strength design before the composite pipe enters the stable stage of crush deformation. value, resulting in damage to the structural components of the rest of the train, thereby endangering the safety of life and property of the people on the train

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  • Composite pipe with gradually varied axial strength
  • Composite pipe with gradually varied axial strength
  • Composite pipe with gradually varied axial strength

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Embodiment Construction

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention is described below through specific examples shown in the accompanying drawings. It should be understood, however, that these descriptions are exemplary only and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of common structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0020] like figure 1 Shown: a composite pipe with gradual axial strength, including an inner sealing layer (1), an intermediate layer (2) and an outer sealing layer (3), and the intermediate layer (2) is arranged on the inner sealing layer (1) and the outer sealing layer (3), and the inner sealing layer (1) and the outer sealing layer (3) are unidirectionally spirally wound to form a radial sealing layer, and the middle layer (2) is unidirectionally spirally Axial...

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Abstract

The invention discloses a composite pipe with gradually varied axial strength. The composite pipe comprises an inner sealing layer (1), a middle layer (2) and an outer sealing layer (3) and is characterized in that the middle layer (2) is arranged between the inner sealing layer (1) and the outer sealing layer (3), each of the inner sealing layer (1) and the outer sealing layer (3) independently crosses or independently unidirectionally intertwines to form a radial sealing layer, and the middle layer (2) independently crosses or independently unidirectionally intertwines to form an axial structural layer. The composite pipe is gradually varied in axial strength, stable in crushing deformation, low in impact load peak and high in energy absorption efficiency.

Description

technical field [0001] The invention relates to the technical field of pipe body equipment, in particular to a composite pipe with gradually changing axial strength. Background technique [0002] Composite pipe is a typical advanced product in composite materials. Due to its advantages of high specific strength, specific modulus, small linear expansion coefficient, fatigue resistance and good damping performance, it is widely used in rail transit structures, such as: subway anti-climbing The energy-absorbing structural section of the device. [0003] However, due to the relative uniformity of the strength of each section in the axial direction of the composite pipe, when two trains running in opposite directions collide, the initial crush peak value of the composite pipe will generally be higher than the allowable strength design before the composite pipe enters the stable stage of crush deformation. value, causing damage to the structural components of the rest of the trai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61F19/04
CPCB61F19/04
Inventor 郝广平廖俊
Owner HARBIN UNIV OF SCI & TECH
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