The application relates to a portable astronaut extravehicular auxiliary mechanical arm
system, and relates to a mechanical arm
system.The application is used for solving the problem that the operation object and execution efficiency of an astronaut extravehicular operation are influenced due to the
reachability space and
pose limitation of an existing space
station mechanical arm, and the flexibility of single-hand operation of the astronaut.The one end of a modular joint is rotationally connected with the one end of a fixed clamp jaw, the other end of the fixed clamp jaw is connected with a space
station extravehicular
handrail;the other end of the one modular joint is connected with the one end of a
power transmission chain to form a roll freedom degree unit;an
azimuth freedom degree unit and a
pitch freedom degree unit are sequentially connected to form a mechanical arm unit;the roll freedom degree unit is sequentially connected with at least one mechanical arm unit from
right to left, a quick plug-in buckle is connected with the
tail end of the mechanical arm unit, and the quick plug-in buckle is connected with a
waist central fixed hanging point of a
space suit.The application is used for assisting an astronaut extravehicular operation.