公开(公告)号：US3604684A

公开(公告)日：1971-09-14

申请号：US3604684D

申请日：1969-06-23

Applicant: ASEA AB

Inventor： EITHUN EINAR ,  MARCHNER JOSEF

IPC: B66B15/06 ,  B66D1/26 ,  B66D1/28 ,  B66D1/44 ,  B66D5/00

CPC classification number: B66D1/26 ,  B66B15/06 ,  B66D1/28 ,  B66D2700/0175 ,  B66D2700/0183

Abstract: A mine hoist includes a shaft with two drums mounted thereon, one of which is turnable with respect to the shaft. An arrangement is provided for adjusting the relative angular positions of the shaft on the two drums. The movable drum is normally connected to the shaft by a friction clutch which is held in engagement by spring pressure and is released by the operation of a fluid pressure cylinder.