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Axial tension safe clutch for large load

A technology of safety clutch and axial tension, applied in the direction of clutches, automatic clutches, mechanical equipment, etc., can solve the problems of inability to realize automatic reset, poor reliability and safety, and low service life, and achieve good transmission, full contact, and reliability The effect of high resistance and low stroke

Inactive Publication Date: 2015-05-20
NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the axial load exceeds the preset value, the transmission parts are disengaged to realize the axial overload protection function, but after the overload load is eliminated, it is necessary to tap the driving shaft in the opposite direction of the overload to complete the reset operation, and automatic reset cannot be realized; the existing shaft The sudden disappearance of the pulling force of the safety clutch after disengagement may cause equipment damage, low service life, poor reliability and safety

Method used

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  • Axial tension safe clutch for large load
  • Axial tension safe clutch for large load
  • Axial tension safe clutch for large load

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0032] The present invention is a large load axial tension safety clutch, such as image 3 As shown, it includes a housing, an input shaft 1 and a lead screw 15 that are rotated through the housing, a friction clutch mechanism for transmission between the input shaft 1 and the lead screw 15, and a reset preload set on the input shaft 1. Adjusting mechanism, and the lead screw nut 12 that cooperates with lead screw 15; Described frictional clutch mechanism includes the input friction plate that is radially fixed with input shaft 1, the output friction plate 20 that is radially fixed with lead screw 15, and preload The reset spring 5 arranged between the lead screw 15 and the output friction disc 20; the reset preload adjustment mechanism includes a reset lock nut 23 with a fixed axial position...

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Abstract

The invention provides an axial tension safe clutch for large load. The axial tension safe clutch for the large load comprises a shell, an input shaft, a lead screw, a friction engaging and disengaging mechanism, a reset pre-tightening adjusting mechanism and a lead screw nut matched with the lead screw, wherein the input shaft and the lead screw penetrate through the shell to be arranged in a rotating mode, the friction engaging and disengaging mechanism is used for transmission between the input shaft and the lead screw, and the reset pre-tightening adjusting mechanism is arranged on the input shaft. The friction engaging and disengaging mechanism comprises an input friction disc axially fixed to the input shaft, an output friction disc axially fixed to the lead screw, and a reset spring arranged between the lead screw and the output friction disc. The reset pre-tightening adjusting mechanism comprises a reset locking nut fixed at the axial position and is arranged on the input shaft through threaded connection. When the driving tension load of the input shaft or the lead screw is smaller than the corresponding separation load, the input friction disc and the output friction disc rotate synchronously under the effect of the pre-tightening force. When the driving tension load of the input shaft or the lead screw is not smaller than the corresponding separation load, the input friction disc and the output friction disc slip.

Description

technical field [0001] The invention relates to a tension safety protection device of a linear motion mechanism, in particular to a large-load axial tension safety clutch. Background technique [0002] Existing safety clutches include torque type safety clutches and axial safety clutches. The axial safety clutches are used in linear load conditions such as push-pull structures and crank mechanisms to protect the mechanism from axial stress. When the axial load exceeds the preset value, the transmission parts are disengaged to realize the axial overload protection function, but after the overload load is eliminated, it is necessary to tap the driving shaft in the opposite direction of the overload to complete the reset operation, and automatic reset cannot be realized; the existing shaft The sudden disappearance of the pulling force of the safety clutch after disengagement may cause equipment damage, low service life, poor reliability and safety. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D43/20
Inventor 魏浩东李桐李忠涛龚荣文
Owner NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
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