A small forward and reverse ratchet wrench

Abstract

The invention discloses a small forward and reverse ratchet spanner. The small forward and reverse ratchet spanner comprises a handle, a sleeve, a ratchet, a pallet, a torque spring, a cover plate, aforward dowel pin and a reverse dowel pin; a mounting groove is formed in the front end of the handle; a mounting hole is formed in the bottom of the mounting groove, and a mounting column is vertically provided upwards; a mounting shaft is arranged at the upper end of the sleeve, and penetrates through the mounting hole from the lower side; the ratchet is fixed on the mounting shaft, and is positioned in the mounting groove; the pallet and the ratchet are correspondingly matched to sleeve the mounting column; the torque spring provides return force to the pallet; the cover plate is fixed on the handle, and the front part thereof is provided with positioning holes corresponding to the mounting shaft and the mounting column; the upper ends of the mounting shaft and the mounting column are inserted in the positioning holes; two dowel pin fixed holes are formed in the front part of the cover plate; the forward dowel pin and the reverse dowel pin are inserted in the dowel pin fixed holes;and the lower parts of the two dowel pins are respectively stopped on the two sides of the pallet. The small forward and reverse ratchet spanner can disassemble and mount screws in narrow space.

Description

technical field [0001] The invention relates to a small forward and reverse ratchet wrench. Background technique [0002] Some parts of the existing civil aviation aircraft have special structures. Four screws are used to connect the flow housing of the starter control valve of the A320 aircraft and the actuator housing. The space for removing and installing the screws is very limited. The ratchet wrench that can be bought on the market cannot be used, because the ratchet pawl device is fixed on the outer ring of the sleeve, resulting in the external size of the ratchet wrench is too large, after the sleeve is installed, the sleeve cannot be inserted into the screw head The screws cannot be removed and installed. The current practice is to remove and install the above-mentioned screws by constantly changing positions with a common wrench, which is inefficient. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a s...

AI Technical Summary

Problems solved by technology

The ratchet wrench that can be bought on the market cannot be used, because the ratchet pawl device is fixed on the outer ring of the sleeve, resulting in the external size of the ratchet wrench is too large, after the sleeve is installed, the sleeve cannot be inserted into the screw head on, the screws cannot be removed and installed

The current practice is to remove and install the above-mentioned screws by changing the position continuously with a common wrench, which is inefficient

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