Mitsubishi Denki Kabushiki Kaisha

Yasutaka Hirano

Tamaiti Kondou

Satoru Yokota

Sadayuki Ohtomi

Iturou Tangiku

A traction machine for an elevator wherein a reduction gear for the traction machine rotatably mounts a first and second parallel spaced shafts such as an output and intermediate shafts inside the gear box by the wall of the gear box. First and second rotors such as helical gears are fixed on the shafts so as to mesh with each other, and at least one of the shafts has each end supported by the wall through a support element which includes first and second support members that are respectively rotatably supported by their outer and inner cylindrical peripheries, respectively, the eccentric inner cylindrical periphery formed in the outer cylindrical periphery of the first support member being adapted to rotatably support the end of the shaft, whereas the outer cylindrical periphery of the second support member within which is eccentrically formed the inner cylindrical periphery is adapted to be secured to the wall of the gear box with the relative rotational position as well as to the first support member being suitably adjusted for the purpose of reducing or adjusting the backlash or the mesh of the rotors.

Traction machine for an elevator

An elevator hoist unit installed within a machine room disposed in the vicinity of a hoistway for moving an elevator car travelling along the hoistway comprising an electric motor, a reduction gear device having a rotatable input shaft connected to the electric motor and an output shaft for outputting at a reduced rate of rotation compared to the input shaft. The reduction gear device includes a gear for increasing the rotational speed of an auxiliary shaft connected to the gear and having an end projecting outwardly of the reduction gear device. The unit further comprises a brake wheel fixedly mounted on the projecting end of the auxiliary shaft, and braking system disposed about the brake wheel for braking or releasing the brake wheel.

Elevator hoist unit

Elevator hoisting engine

In a traction machine for an elevator having a reduction gear enclosed within a main housing and having an input shaft and an output shaft together with parallel shaft gears, a traction sheave connected to the output shaft, an electric motor connected to the input shaft, a brake gear, and a flywheel, at least one of the electric motor, the brake gear and the flywheel is arranged on the same side as the traction sheave, whereby a peripheral portion of one of the side surfaces of the at least one of the above elements confronts a peripheral portion of one of the side surfaces of the traction sheave.

Growing community of inventors

Inazawa, Japan

Yasutaka Hirano