A Torque Overload Protection Method for Transmission Shaft Based on Carbon Fiber Composite Materials

A composite material and overload protection technology, which is applied in the field of mechanical transmission, can solve problems such as damage to related components, broken transmission shafts, and complex anti-overload structures.

Active Publication Date: 2021-03-16
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for realizing torque overload protection by using a multi-material integrated transmission shaft, so that the transmission shaft can complete self-protection when subjected to overload torque, and solve the problem of fracture of the transmission shaft when the transmission shaft is overloaded, damage to related components, and Problems such as complex anti-overload structure in the prior art

Method used

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  • A Torque Overload Protection Method for Transmission Shaft Based on Carbon Fiber Composite Materials
  • A Torque Overload Protection Method for Transmission Shaft Based on Carbon Fiber Composite Materials
  • A Torque Overload Protection Method for Transmission Shaft Based on Carbon Fiber Composite Materials

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Effect test

Embodiment 1

[0027] Embodiment 1: Torque overload protection method for a multi-material integrated drive shaft containing two metal material drive shafts

[0028] The multi-material integrated drive shaft containing two metal material drive shafts, such as image 3 As shown, it is composed of metal material transmission shaft 1, carbon fiber composite material shaft tube 2 and metal material transmission shaft 3 connected in sequence, and the protection method is: at the joint of metal material transmission shaft 1 and carbon fiber composite material shaft tube 2 and At least one of the joints between the shaft tube 2 of carbon fiber composite material and the transmission shaft 3 of metal material adopts an interference connection.

[0029] The two ends of the multi-material integrated transmission shaft including two sections of metal transmission shafts, ie, the ends of the metal transmission shaft 1 and the metal transmission shaft 3, are respectively provided with couplings 4 connect...

Embodiment 2

[0031] Embodiment 2: Overload protection method of a multi-material integrated transmission shaft containing a section of metal material transmission shaft

[0032] The multi-material integrated drive shaft containing a section of metal material drive shaft, such as Figure 4 As shown, it is composed of a metal transmission shaft 1 and a carbon fiber composite shaft tube 2 connected in sequence. The protection method is: the connection between the metal transmission shaft 1 and the carbon fiber composite shaft tube 2 adopts an interference connection.

[0033] The two ends of the multi-material integrated transmission shaft including a transmission shaft made of metal material, that is, the ends of the transmission shaft 1 made of metal material and the shaft tube 2 made of carbon fiber composite material, are respectively provided with couplings 4 connected thereto.

[0034] When the transmission torque is greater than the rated torque, there will be slippage between the meta...

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Abstract

The invention relates to a transmission shaft torque overload protection method based on a carbon fiber composite. The method is achieved through failure of the interference connection of a metal material transmission shaft and a carbon fiber composite shaft pipe. When the torque transmitted by the transmission shaft is within the rated torque range, friction torque generated by interference connection of the metal shaft and the carbon fiber composite shaft pipe is larger than the transmission torque, and torque can be normally transmitted; when the transmission torque is larger than the rated torque, slippage is generated between the metal shaft and the carbon fiber composite shaft pipe, interference connection fails, the torque cannot be transmitted, and overload protection is achieved; a carbon fiber composite base body has certain elasticity and wear resistance, when overloads fail, the connection interface is quite small in wear, when overload torque is eliminated, the transmission state can be immediately recovered, compared with the prior art, the method is integrated with the transmission shaft, other structures are not increased, and the structure and the size of an existing shaft do not need to be changed.

Description

technical field [0001] The invention relates to the technical field of mechanical transmission, and provides a torque overload protection method for a transmission shaft, in particular to a multi-material integrated transmission shaft based on carbon fiber composite materials. Background technique [0002] In the existing mechanical transmission, the friction belt transmission is a typical transmission method with overload protection function. The friction belt transmission is composed of one or several belts tightly sleeved on two pulleys, and the two wheels are installed on the driving shaft and the driven shaft respectively. On the shaft, the friction between the belt and the two pulleys is used to transmit motion and power, and it is widely used in mechanical transmission. Friction-type belt transmission can overload and slip, thus protecting related parts, but the transmission efficiency of belt transmission is low, and the accurate transmission ratio cannot be maintain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D43/20
CPCF16D43/20
Inventor 张锦光文湘隆丁国平宋春生胡业发
Owner WUHAN UNIV OF TECH
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