ELEVATOR WITH AN ACTUATING DEVICE FOR ACTUATING A CATCHING DEVICE, A TAILSTOCK FOR ACTUATING A CATCHING DEVICE AND A METHOD FOR ACTUATING A CATCHING DEVICE

摘要

A lift apparatus with an actuating equipment for actuating a safety brake device, a pull rod for actuating the safety brake device, and a method for actuating the safety brake device are provided to neutralize a longitudinal displacement occurring during actuating the safety brake device by using an elastic tie rod member on a tie rod. More than one moving member are provided to be substantially movable in a vertical direction under the guidance by a guide rail(4). A pair of safety brake devices(6) are implemented on the moving member. The moving member is generally decelerated by a speed sensor. When required, an operational force generated by the speed sensor is transferred to a safety brake member(10) in the safety brake devices(6). The safety brake member(10) and an operational link member(11) are connected to each other via a pull rod(14). The operational link member(11) and the safety brake devices(6) are implemented to be cooperative with each other in various positions of the moving member. The pull rod(14) includes upper and lower pull rod members(15,17) which are elastically connected to each other via a flexible pull rod member(16). Central axis lines of the upper and lower pull rod members(15,17) are variably spaced from each other. When no load is applied, the upper pull rod member(15) is maintained to be substantially straightened with respect to the lower pull rod member(17).