Hydraulic power screw driver - has motor take=off shaft acting as swashplate shaft extending into planetary transmission

摘要

The screw driver has a hydraulic motor, with a planetary transmission connected to its drive shaft. The housings (10) of hydraulic motor (21) and transmission are integral or connected. The take-off shaft (29) of the motor is connected non-turnably directly to the rotor (23), which executes a wobble movement. The sun wheel of the transmission has a forward projecting hollow shoulder (32) with a non-circular profile at the front end. The front end of the motor take-off shaft fits into the shoulder. A multi-path proportioning valve (16) at the rear wall of the housing switches the motor. The transmission housing has a ring (14) with hand grip (15).