HYDRAULIC REMOVER Russian patent published in 1999 - IPC

FIELD: disassembly-assembly devices. SUBSTANCE: when rod-piston 2 is moved out amplifier 4 separates cams 15 and brings operating ends of catches 13 behind end face 32 of part 30 press-fitted on shaft 31. Then amplifier 4 separates rollers 2 by turning tie-rods 19, 20 which creates traction force exceeding that of rod-piston 2. Traction force is transmitted to part 30 through catches 13 and to shaft 31, through bushing 24. While thrusting upon rod 5 cams 15 prevent catches 13 from being turn off part 30. Initial shift of part 30 on shaft takes place, which requires relatively great effort, for example, to destroy diffusion coupling. When pusher 3 reaches end of shaft 31 it finishes dismantling by means of direct force of rod-piston 2. With height of protruding end 25 reduced, traction force on bushing 24 and catches 13 starts developing when rollers 22 reach middle part of amplifier 4, which increases ratio of traction force developed by it relative to force of rod-piston 2. With height of end 25 increased, action of amplifier 4 is repeated if direct force of rod-piston is not enough to continue dismantling. EFFECT: enhanced reliability of part dismantling. 3 cl, 1 dwg