| 摘要 |
PURPOSE:To freely adjust the eccentricity of a crank of a reciprocating device by disposing an eccentric shaft having an eccentric crank pin in a hollow rotor connected to a pulley drum, and rotating the eccentric shaft by a worm gear. CONSTITUTION:An eccentric shaft 19 is disposed with eccentricity to the axis of a shaft of a hollow rotor 17 in the hollow rotor 17 connected to a hollow drum 20. An eccentric crank pin 28 connected to a crank rod 30 of a reciprocating device is fixed to one end of the eccentric shaft 19, and a worm wheel 24 engaged with a worm 26 disposed in the hollow drum 20 is fixed to the other end of the eccentric shaft 19. In this arrangement, the worm 26 is manually turned to freely adjust the eccentricity of the eccentric crank pin 28 to the hollow rotor 17. |
