Elevator main suspension line shake preventing apparatus

The invention provides an elevator main suspension line shake preventing apparatus which can faithfully prevent the shakes of a main suspension line with a simple structure and conveniently perform setting operations. The apparatus comprises a car side shake preventor used for preventing shakes of the main suspension line on the elevator car side when a drive pulley with the main suspension line wound serves as a reference; a heavy side shake preventor used for preventing shakes of the main suspension line on the heavy side when the drive pulley serves as the reference; connecting slings connecting the shake preventors and having shake preventor rope wheels connected with slings wound thereon. The weights of the shake preventors are greater than the total weight of the shake preventor and the connecting slings. The shake preventors rise and fall inside an elevating channel in a way to not contact each other. When the shake preventors interfere with counterweights during a rising process, the shake preventors are pushed upwards so that the positions of the shake preventors are lowered.