A large load axial tension safety clutch

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

Inactive Publication Date: 2017-07-18
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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  • A large load axial tension safety clutch
  • A large load axial tension safety clutch
  • A large load axial tension safety clutch

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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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PUM

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Abstract

The present invention is a large-load axial tension safety clutch, comprising a casing, an input shaft and a lead screw rotatably arranged through the casing, a friction clutch mechanism for transmission between the input shaft and the lead screw, and a friction clutch arranged on the input shaft. A reset pre-tightening adjustment mechanism, and a lead screw nut matched with the lead screw; the friction clutch mechanism includes an input friction disc fixed radially with the input shaft, an output friction disc fixed radially with the lead screw, and a preload set at A reset spring between the lead screw and the output friction disc; the reset preload adjustment mechanism includes a reset lock nut with a fixed axial position, and the reset lock nut is installed on the input shaft through a threaded connection; when the input shaft or the lead screw When the active tensile load of the nut is less than the corresponding separation load, the input friction disc and the output friction disc rotate synchronously under the preload of the return spring; when the active tensile load of the input shaft or screw nut is not less than the corresponding separation load, the input Friction disc and 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 Patents(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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