Crane anti-skewing device

Details Crane anti-skewing device Crane anti-skewing device

1980-10-20

1985-03-19

Reeves, Robert B.

Railway rolling stock

Trucks

Overhead crane

105171, B61D 100, B61D 1500, B61F 1700

Patent

active

045052077

ABSTRACT:
An anti-skewing device for a bridge crane comprises a proximity switch near a first side of a first track and near a first end of the crane for detecting the proximity of the switch to the first side of the first track and thereby any skewing of the crane. There is an electrically activated brake for each set of wheels. A circuit connects the proximity switch to each of the brakes to slow one end of the crane relative to another end and thereby correct any skewing during movement of the crane.

REFERENCES:
patent: 1181324 (1916-05-01), Lent
patent: 2601831 (1952-07-01), Caillard
patent: 2932260 (1960-04-01), Puma et al.
patent: 2935032 (1960-05-01), Tingskog
patent: 2955546 (1960-10-01), Liebherr et al.
patent: 2974606 (1961-03-01), Macrander
patent: 3166023 (1965-01-01), Lynd, Jr.
patent: 3204577 (1965-09-01), Smith
patent: 3703016 (1972-11-01), Schramm et al.
patent: 4022133 (1977-05-01), Lindblom et al.
Harper, Charles A.; "Handbook of Components for Electronics"; copyright 1977; switches 10-93.
Shields, John Potter; How to Build-Proximity Detectors & Metal Locators; Second Edition First Printing-1972; pp. 25, 26, 47, 52, 55, 61, and 87.

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