Plane low-friction spring and cam constant-force mechanism

A low-friction, cam technology, used in mechanical equipment, belts/chains/gears, transmissions, etc., can solve the problems of low stability of output torque value and narrow torque value range, and achieve less impact interference and strong versatility. , the effect of high stability

Inactive Publication Date: 2016-01-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of narrow torque value range and low output torque value stability of the existing loading device, the present invention further proposes a flat low-friction spring cam constant force mechanism

Method used

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  • Plane low-friction spring and cam constant-force mechanism

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 Describe this embodiment, a flat low-friction spring cam constant force mechanism described in this embodiment includes a cam 1, an output end reel 2 and a plurality of springs 3, the cam 1 is arranged in the output reel 2, and the output end reel 2 A plurality of rollers 2-1 are evenly distributed along the circumferential direction on the inner side wall of the cam 1, and a plurality of articulated rings 1-1 are evenly distributed along the circumferential direction on the surface of the cam 1, and one end of each spring 3 is connected with a roller 2-1 Connection, the other end of each spring 3 is connected with a corresponding articulated ring 1-1.

specific Embodiment approach 2

[0009] Specific implementation mode two: combination figure 1 To illustrate this embodiment, each spring 3 of the planar low-friction spring cam constant force mechanism described in this embodiment is made of a cylindrical helical tension spring. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 1 Describe this embodiment, the plurality of springs 3 of a flat low-friction spring cam constant force mechanism described in this embodiment refers to four springs 3, and the plurality of articulated rings 1-1 refers to four articulated rings 1-1 , a plurality of rollers 2-1 refers to four rollers 2-1. Other components and connections are the same as those in the first embodiment.

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Abstract

The invention relates to a spring and cam constant-force mechanism, and in particular to a plane low-friction spring and cam constant-force mechanism. The problems that the use torque value range of an existing loading device is narrow, and the stability of the output toque value is low are solved. The plane low-friction spring and cam constant-force mechanism comprises a cam, an output end winding drum and a plurality of springs. The cam is arranged in the output end winding drum. A plurality of rollers are evenly distributed on the inner side wall of the output end winding drum in the circumferential direction. A plurality of hooking rings are evenly arranged on the surface of the cam in the circumferential direction. One end of each spring is connected with one corresponding roller, and the other end of each spring is connected with one corresponding hooking ring. The plane low-friction spring and cam constant-force mechanism is used for the fields of roll paper, thermal power generation, material testing, space equipment and the like.

Description

technical field [0001] The invention relates to a spring cam constant force mechanism, in particular to a plane low friction spring cam constant force mechanism. Background technique [0002] Constant force loading mechanism is widely used in paper roll, thermal power generation, material testing, aerospace equipment and other fields, and it can directly affect the safety and reliability of equipment. Especially in the field of aerospace, it is often used as a ground verification method to verify the performance of spacecraft through the constant force mechanism to provide micro-low gravity compensation. Traditional gravity compensation methods include breeding balance, air flotation, water flotation, suspension method, etc. Among them, the gravity simulation of suspension method has two methods: active compensation and passive compensation. The invention creates and designs a passive constant force mechanism to provide constant force output for high-frequency changing load...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/06
CPCF16H25/06
Inventor 刘振高海波王利平邓宗全丁亮李楠
Owner HARBIN INST OF TECH
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