Spaceflight ratchet wrench capable of being used by one hand

Abstract

The invention relates to the technical field of manned spaceflight, in particular to a spaceflight ratchet wrench capable of being used by one hand, which comprises a handle shell, a ratchet device and an extension bar, and further comprises a screwdriver head guide device and a locking mechanism, wherein the ratchet device is arranged on the handle shell; the the screwdriver head guide device and the locking mechanism are arranged at the head end and the tail end of the extension bar respectively, and the extension bar is connected with the ratchet device through the locking mechanism. According to the spaceflight ratchet wrench capable of being used by one hand disclosed in the invention, the screwdriver head guide device and the locking mechanism are respectively arranged at the front end and the tail end of the extension bar; the locking mechanism can be quickly locked with the ratchet device, and the screwdriver head guide device for realizing the ratchet wrench at the front end of the extension bar can realize the wheel returning operation of the ratchet device, so that the space station astronaut can be ensured to mount and dismount the screw by a single hand outside a cabin.

Description

technical field [0001] The invention relates to the technical field of manned spaceflight, and more particularly relates to an aerospace ratchet wrench that can be used with one hand. Background technique [0002] According to the needs of astronauts on the space station to carry out extravehicular maintenance tasks, involving the replacement of extravehicular equipment, the equipment and the deck are fixed by non-protruding screws installed at the corners of the equipment, and the installation and removal of the screws are performed by astronauts outside the cabin. For the routine and necessary operations of the work, the astronauts stand outside the cabin on the foot limiter, and the foot limiter is fixed at the end of the mechanical arm. Considering the shaking of the end of the mechanical arm, the accuracy of the alignment and operation of the astronauts is guaranteed. For stability during the process, one hand needs to hold the ratchet wrench tool, and the other hand ho...

AI Technical Summary

Problems solved by technology

[0003] During the operation of the ratchet wrench outside the cabin, the ratchet wrench needs to have the function of reciprocating and reversing the ratchet. The existing ratchet wrench needs another hand to hold the extension rod body to overcome the torque of the ratchet wheel, which cannot meet the requirements of one-handed operation. If One-handed operation, the extension rod rotates with the ratchet wheel while the ratchet wheel is turning back, the screw is ineffective to do work, and the maintenance tasks of removing and installing screws for extravehicular activities cannot be completed

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