| 摘要 |
The invention relates to an electromagnetic system used for releasing persons confined into electrically-operated elevators, by conducting, in case of power failure, the elevator's car to the nearest station automatically. Said system is composed of two parts: the first part of the mechanism (2) connects the shaft of the auxiliary electric reducing gear (4) to the one input of the reducer (1), whereas the other part (3) connects the other input of the reducer (3) to the shaft of the main electromotor (5). At the output of the reducer (1) is adapted the pully of the elevator's car (6). It is a simple, maintainance-free, and durable- for-life system, except for the battery which should be constantly charged by the switch board. The screw and the crown are seated on conical ball-bearings of great dimensions for long service life. Lubrification is effected by synthetic oil, whereas the efficiency degree of the reducer is of the range of 75%. |
