A semi-rotary mechanism with grooves on the convex surface

Abstract

The invention provides a half-rotating mechanism with a convex-contour-surface groove, and belongs to the technical field of bionic machines. The half-rotating mechanism comprises a main shaft, a crank, a moving shaft, a half-rotating rod, a shaft sleeve, a longitudinal sliding groove, a sliding block, an auxiliary shaft and a rack, wherein the main shaft and the auxiliary shaft are mounted on the rack, one end of the crank is fixedly connected with the main shaft, and the other end of the crank is fixedly connected with the moving shaft; the moving shaft is mounted in the shaft sleeve and can rotate relative to the shaft sleeve, and the shaft sleeve is fixedly connected to the middle of the half-rotating rod; and the longitudinal sliding groove is formed in the half-rotating rod in the axis direction of the half-rotating rod, and the sliding block is fixedly connected with the auxiliary shaft and can slide in the longitudinal sliding groove. According to the half-rotating mechanism, the defects that a half-rotating rod in an existing half-rotating mechanism is unstable in movement, sliding block contact force is large, and the bearing capacity is low are overcome, and the performance of various machines based on the half-rotating mechanism can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of bionic machinery, and in particular relates to a half-turn mechanism with a convex profile groove. Background technique [0002] The semi-rotary mechanism is a mechanism that can produce asymmetrical rotation and is used for animal motion bionics. It has been used to form the double blade propeller of Chinese patent CN100534858, CN104192307A a kind of imitation bird flapping wing mechanism, CN200510040830.8 rotating walking wheel and the walking mechanism of CN200910263070 double straight rod leg walking wheel, etc. In the semi-rotary mechanisms used in these projects, the asymmetrical rotation of the output member is achieved by a planetary gear drive or a chain drive placed inside the boom. There are many parts in the transmission system and the structure is relatively complicated, so the weight is relatively large and the work efficiency is not high. The well-known CN 102837751 A grooved shaft-type h...

AI Technical Summary

Problems solved by technology

There are many parts in the transmission system and the structure is relatively complicated, so the weight is relatively large and the work efficiency is not high

The well-known CN 102837751 A grooved shaft-type half-rotation mechanism changed the more complicated scheme of setting gear train transmission inside the pivoting arm, and proposed a half-rotation mechanism with the least parts and the simplest structure, but the motion stability and carrying capacity of the mechanism poor

The known CN 105240474A crank rocker type half-rotation mechanism with one-way bearing solves the problem of poor motion stability and load-carrying capacity of the mechanism by limiting the one-way rotation of the rocker and the half-rotation rod, but increases the number of moving parts of the mechanism , the weight of the mechanism is relatively large, and at the same time, the steering of the input shaft is limited, and it can only work in one direction, which limits the applicability of the mechanism

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