Planetary overriding gearing and overriding driving for chain be

Details Planetary overriding gearing and overriding driving for chain be Planetary overriding gearing and overriding driving for chain be

1989-02-02

1990-07-10

Wright, Dirk

Planetary gear transmission systems or components

Input from independent power sources

Condition responsive motor control

475 5, 475 10, F16H 3706

Patent

active

049399497

ABSTRACT:
A high performance drive system for a mineral mining installation employs separate main and auxiliary drives with wheels around with a chain is entrained. Each drive is composed of an asynchronous motor and spur gearing. An additional over-ride planetary gearing unit is incorporated in at least one of the drives to distribute loading as evenly as possible. The planetary gearing is operable to provide a transmission ratio which can be varied in accordance with load or rotational speed of the drive(s). The planetary gearing unit has two sets of planet wheels on a common carrier. One set of planet wheels mesh with an input sun wheel and the other set of wheels mesh with an output sun wheel. The sets of planet wheels are disposed so that one wheel of one set meshes with an adjacent wheel of the other set. A further control motor drives a pinon which meshes with the carrier and this further motor is operated in accordance with e.g. the load or rotational speed of the drive(s). With the further motor stationary the transmission ratio of the planetary gearing is 1:1.

REFERENCES:
patent: 2398346 (1946-04-01), Anderson
patent: 2399685 (1946-05-01), McCoy
patent: 3298257 (1967-01-01), Moss
patent: 3658166 (1972-04-01), Hara et al.
patent: 4056759 (1977-11-01), Mitsui et al.
patent: 4508205 (1985-04-01), Aulagner et al.
patent: 4605358 (1986-08-01), Burandt

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