LOAD SENSITIVE TYPE AUTOMATIC TRANSMISSION DEVICE AND HOISTING TRACTION MACHINE INCORPORATING LOAD SENSITIVE TYPE AUTOMATIC TRANSMISSION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a load sensitive type automatic transmission device which requires an operator no complicated transmission operation every time a load status changes, which can smoothly transmit power between a low-speed side rotating member and an output rotating member when hoisting a rated or greater load, and which can reduce shocks and noises at switching.;SOLUTION: The device includes an intermediate magnetic substance 19 which is displaced in axial directions of rotary shafts of both rotating members by a position switching member in response to the magnitude of an external load and is magnetically engaged with a magnetic substance of either the low-speed side input rotating member or the high-speed side input rotating member, and output rotating members 30, 32 which perform switching between a low-load high-speed rotation and a high-load low-speed rotation. The low-speed input rotating member contains an engagement part 17a mechanically engaged with an output rotating member. The engagement part 17a is engaged with the output rotating member after the intermediate magnetic substance 19 of the output rotating member is engaged magnetically while opposing an outside magnetic substance 15 of the low-speed input rotating member.;COPYRIGHT: (C)2010,JPO&INPIT