PISTON WRENCH WITH DOUBLED RATCHET GEAR Russian patent published in 2014 - IPC B25B21/00 

FIELD: machine building.

SUBSTANCE: pneumatic wrench with a ratchet wheel comprises a pneumatic drive, made of two power cylinders with cartridges pressed into them, a slide valve, having a body with a cartridge and with two pinned stop discs, the pneumatic drive with two power cylinders arranged in it with pressed cartridges, and pawls. In the cylinders there are pistons installed as capable of reciprocal movement and connected with pawls by means of traction rods. The ratchet wheel comprises two geared profiles and is placed as capable of rotation around its axis in coaxial holes of the bushings, pressed into a body and a cover. The pistons of the pneumatic drive are rigidly connected to each other by traction rods. Both pawls are mechanically connected to two geared profiles of the ratchet wheel.

EFFECT: increased intensity of a working cycle of a device.

2 cl, 3 dwg