Method of, and apparatus for, absorbing vibrations in cars of hi

Details Method of, and apparatus for, absorbing vibrations in cars of hi Method of, and apparatus for, absorbing vibrations in cars of hi

1989-10-25

1991-06-04

Skaggs, H. Grant

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 292, 187110, B66B 144

Patent

active

050206397

ABSTRACT:
The elevator car contains an elevator car body substantially horizontally supported at low friction at a support frame. The elevator car body is supported at a bottom yoke of the support frame by, for example, three hydraulic suspension units and is maintained in floating position during travel of the elevator car. During such travel, only the support frame carries out substantially horizontally directed thrust movements or vibrations which are generated by the associated guide rails, whereas the elevator car body remains in position or at rest due to its mass inertia and the low friction support. The floating elevator car body can be displaced into predeterminate positions by means of actuating cylinders. During travel of the elevator car, the floating elevator car body is displaced into a position spaced at a greater distance from the elevator shaft wall on the side of the elevator door for increasing the movement clearance. During approach to a destination floor or landing, the elevator car body is displaced into a position closer to the elevator shaft wall for reducing the entrance gap. The elevator car body is mechanically locked into a fixed position relative to the support frame prior to the mechanical coupling of the elevator door. '

REFERENCES:
patent: 1669184 (1928-05-01), Baker
patent: 2726735 (1955-12-01), Rohrberg
patent: 2793264 (1957-05-01), Jones et al.
patent: 4595166 (1986-06-01), Kurokawa
patent: 4660682 (1987-04-01), Luinstra et al.
patent: 4709787 (1987-12-01), Uchino

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