Upper limb limiting mechanism of space suit

Abstract

The invention relates to an upper limb limiting mechanism of a space suit, a shoulder joint limiting mechanism is formed by connecting two semispherical thin shells in series and has three degrees of freedom which are respectively convergence / abduction, forward extension / backward extension and inward rotation / outward rotation, an elbow joint mechanism is formed by connecting a hinge pair mechanism and a cylindrical pair mechanism in series and has two degrees of freedom, and the elbow joint mechanism has two degrees of freedom. The wrist joint mechanism is composed of a wrist extension plate, a wrist plate, a palm plate and a hinge pair and has two degrees of freedom. Movement of the upper limbs is decomposed into movement of the shoulder joints, the wrist joints and the elbow joints, and the movement range of the joints is limited by designing limiting mechanisms of the shoulder joints, the wrist joints and the elbow joints, so that the upper limbs of the astronaut can be forced to move in the simulated astronaut device; the problem that when the astronaut is in the earth environment, the movement limitation on the upper limbs of the astronaut cannot meet the requirements in the space environment state is solved.

Description

technical field [0001] The invention relates to the technical field of space suits, in particular to a space suit limiting mechanism. Background technique [0002] From the perspective of the working environment, astronauts need to work in interstellar orbits and alien surface environments. The orbital space suit is in a microgravity environment. The working mode of extravehicular activities is mainly the lower limbs to support the upper limbs, and its flexibility is required. Low; and when performing alien surface missions, astronauts are required to have higher autonomous working capabilities. In order to be able to perform most actions similar to those on Earth, this puts forward high requirements for the structural materials of extravehicular spacesuits. Design requirements, need to achieve more freedom of movement and less resistance, especially in the face of the task of limb joint movement position and other issues. [0003] Because the real space suit is very expens...

AI Technical Summary

Problems solved by technology

Due to the impact of pressurization, the flexibility and angle of each joint of the extravehicular spacesuit are limited during the movement

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