Otis Elevator Company

FengKun Zhu

James Leo Hubbard

Hongliang Wu

Ruguang Liu

GuoChen Gao

Xuewei Wang

A turning device includes a hand disc coupled to an input shaft; a reduction gear set accommodated in a housing and connected to the input shaft and an output shaft; and a shaft connector for connecting the output shaft and a motor spindle.

Brake disc releasing device, turning device, elevator rescue kit and method

A tractor assembly and an elevator. The tractor assembly includes: a traction sheave, having a traction means fitting surface and a first transmission surface on a peripheral surface thereof; a plurality of support wheels, configured to support the traction sheave, and each having a second transmission surface on a peripheral surface thereof; and support wheel bases, configured to support the support wheels through support shafts, wherein the first transmission surface of the traction sheave is in transmitting cooperation with the second transmission surfaces of the plurality of support wheels respectively. According to the tractor assembly and elevator of the present application, the support wheels are disposed to achieve the transmitting cooperation of the traction sheave during operation of the elevator and support the traction sheave, thus omitting the load and drive bearings required by a conventional traction sheave.

Traction machine assembly and elevator

A brake disc release device, a turning device, and an elevator rescue package and method. The brake disc release device comprises: an actuating mechanism; a gear connected to a first end of the actuating mechanism; a first slider capable of sliding along a first guide piece and comprising a rack portion for engagement with the gear and a first wedge portion; a second slider capable of sliding along a second guide piece and comprising a second wedge portion for engagement with the first wedge portion of the first slider; and a pulling cable having a first end connected to the second slider and a second end connected to the brake disc.

Growing community of inventors

Tianjin, China

FengKun Zhu