| 摘要 |
There is a hoist with built-in load sensitive automatic speed change device including: a high-torque input member 12 coupled to a hand wheel 18, a magnetic clutch 14 coupled via a speed-increasing mechanism 15 and configured to transmit a low load, and
an output transmitting means 13 configured to transmit a rotational operating force of the hand wheel 18 to mechanical brakes 7, 8 via the high-torque input member 12 or the magnetic clutch 14,
wherein the hand wheel 18 is axially supported by a drive member 10 coupled to the output transmitting means 13 of the mechanical brakes 7, 8 and rotated thereby,
the magnetic clutch 14 is arranged between the speed-increasing mechanism 15 and the hand wheel 18,
the hand wheel 18 and the speed-increasing mechanism 15 are coupled by a hollow input member 11 provided so as to cover the outer periphery of the magnetic clutch 14 so as to allow transmission of torque,
the output transmitting means 13 is fitted onto a boss portion 10a of the drive member 10 so as to allow torque transmission to the boss portion, so that reduction in size of the load sensitive automatic speed change device and prevention of entry of dust or the like into the magnetic clutch are achieved. |
