Foldable six-freedom-degree parallel motion platform

Abstract

The invention discloses a foldable six-freedom-degree parallel motion platform. The foldable six-freedom-degree parallel motion platform comprises an upper platform body, a lower platform body and six branch chains through which the upper platform body and the lower platform body are connected, wherein the six branch chains are of the totally same structure. The branch chains are evenly distributed in pairs. Each branch chain comprises an upper connecting rod, a parallelogram structure and an electric cylinder. One end of each upper connecting rod is rotationally connected with the upper platform body. The other end of each upper connecting rod is rotationally connected with one end of the corresponding parallelogram structure. The other end of each parallelogram structure is rotationally connected with the lower platform body. The tail of each electric cylinder is rotationally connected with the middle of the corresponding parallelogram structure. A telescopic rod of each electric cylinder is rotationally connected with the middle of the corresponding upper connecting rod. According to the six-freedom-degree parallel motion platform, the two ends of each electric cylinder are movably installed on the corresponding upper connecting rod and the corresponding parallelogram structure, and therefore the dynamic response of the motion platform can be faster, and the space utilizing rate can be higher.

Description

technical field [0001] The invention belongs to the technical field of motion platforms, and in particular relates to a foldable six-degree-of-freedom parallel motion platform. Background technique [0002] The parallel motion simulation platform is a closed-loop mechanism composed of multiple branch chains. The corresponding traditional mechanism mostly uses a single open-chain structure to achieve multiple degrees of freedom of the terminal. This type of mechanism is usually called a series mechanism. The six-degree-of-freedom parallel motion simulation platform is proposed and developed on the basis of the Stewart platform. It is widely used in motion simulation of aircraft, ships, and automobiles due to its advantages such as high rigidity, stable structure, strong acceleration capability, and high precision. [0003] The Stewart platform, which is widely used, is composed of six branch chains of moving pairs, the space utilization rate is not high, the carrying capacity...

AI Technical Summary

Problems solved by technology

Each of the above-mentioned branches includes a main branch and a linear drive branch. Since one end of the linear drive branch is connected to the lower platform, in the case of a large load, the requirements for the expansion and carrying capacity of the linear drive branch are relatively high. Platform responsiveness is weak

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