Device on hoisting machinery for automatic control of the moveme

Details Device on hoisting machinery for automatic control of the moveme Device on hoisting machinery for automatic control of the moveme

1985-11-21

1986-08-05

Blix, Trygve M.

Traversing hoists

With haul-in line

212147, B66C 1900

Patent

active

046037837

ABSTRACT:
In a device on hoisting machinery for automatically controlling the movem of a load carrier and for steadying the pendulum-type motion of a load suspended from the load carrier, a signal transmitter is provided for controlling the movement of the load carrier traction motor by means of a selected substantially cosine-shaped load carrier acceleration signal (b.sub.K). In such control a reduction is obtained of the acceleration time interval and braking time interval (T), respectively, at a selected maximum pulling force of the load carrier traction motor, and it is possible to keep the pulling force constant. The load acceleration (b.sub.L) follows a cosine curve.

REFERENCES:
patent: 3517830 (1970-06-01), Virkkala
patent: 3921818 (1975-11-01), Yamagishi

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