2-RRR mechanism with function of linear movement

A linear motion and functional technology, applied in mechanical equipment, transmission, belt/chain/gear, etc., can solve problems such as large differences in mechanism form, complex structure, unsuitable mechanical structure, etc., to achieve simple structure and good bearing capacity , the effect of good anisotropic stiffness

Inactive Publication Date: 2012-07-04
ZHEJIANG WANXIANG SYST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The four linear translation mechanisms mentioned above can all achieve linear translation motion, but the mechanism forms are quite different, and their complex structures are not suitable for mechanical structures that require small-scale linear motion.

Method used

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  • 2-RRR mechanism with function of linear movement
  • 2-RRR mechanism with function of linear movement
  • 2-RRR mechanism with function of linear movement

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Embodiment Construction

[0017] The structure, principle and specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] image 3 It is a structural schematic diagram of the 2-RRR mechanism with linear motion function provided by the present invention. The mechanism includes a lower connecting rod fixed end 1, an upper connecting rod fixed end 4, a lower connecting rod 2a of the first RRR kinematic chain of the first RRR kinematic chain, an upper connecting rod 2b of the first RRR kinematic chain, The second RRR kinematic chain lower side connecting rod 3a of the second RRR kinematic chain, the second RRR kinematic chain upper side connecting rod 3b and guide rod 5, the lower side connecting rod fixed end 1 and the first RRR motion The link 2a on the lower side of the chain passes through the rotary joint A 1 Connection, the fixed end 1 of the lower connecting rod and the lower connecting rod 3a of the second RRR kinematic ...

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Abstract

The invention relates to a 2-RRR mechanism with the function of linear movement, which comprises an upper connecting rod fixing end, a lower connecting rod fixing end, two same RRR moving chains and a guiding rod, wherein each RRR moving chain comprises two connecting rods, the connecting rod fixing ends and the connecting rods are connected by adopting rotating pairs, the connecting rods are connected by adopting rotating pairs, and the guiding rod and the upper connecting rod fixing end form a cylindrical pair; a plane is determined by the two RRR moving chains; and moreover, the plane is coplanar with the axis O1O2 of the guiding rod. The 2-RRR mechanism with the function of the linear movement has the following beneficial effects that: the aim of accurate linear movement of a certain component in the mechanism is realized by adopting a mode of combining the rotating pairs with the cylindrical pair according to the 2-RRR mechanism with the function of the linear movement; meanwhile, the mechanism has the advantages of simple structure, better directional rigidity, better carrying capacity and the like; and the 2-RRR mechanism with the function of the linear movement can be used in a mechanical mechanism needing to carry out fixed linear movement.

Description

technical field [0001] The invention relates to a linear guide mechanism, in particular to a mechanical mechanism that requires a linear expansion and contraction function and is loaded more complicatedly, and belongs to the technical field of mechanical structure and mechanism. Background technique [0002] Single-degree-of-freedom linear motion mechanisms are widely used in modern machinery. In order to accurately realize linear motion, people invented the crank-slider mechanism, but the motion characteristics of the crank-slider mechanism depend entirely on the slide rail to a certain extent. In order to avoid the influence of linear motion limited by slide rails, mechanism scholars try to synthesize a mechanism that can achieve precise linear motion through traditional connecting rods and rotating pairs. The more representative linear translation mechanism in the history of mechanism science is the Peaucellier-Lipkin mechanism [1.Peaucellier-Lipkin linkage.Wikipedia, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H21/16
Inventor 资小林赵景山张杰刘向谌文思冯之敬
Owner ZHEJIANG WANXIANG SYST
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