Apparatus and method for driving a large traveling crane

Details Apparatus and method for driving a large traveling crane Apparatus and method for driving a large traveling crane

1990-11-01

1992-06-09

Oberleitner, Robert J.

Railway rolling stock

Trucks

Overhead crane

B61D 1500

Patent

active

051197375

ABSTRACT:
A drive for a traveling bridge crane including a bridge having a width spanning two parallel spaced apart rails and opposite ends located at one of the rails. A first pair of wheels comprising first and second wheels are respectively mounted at the opposite ends of the bridge and each of the first and second wheels engage a different one of the rails. A second pair of wheels comprising third and fourth wheels are also mounted at the opposite ends of the bridge and each engage a different one of the rails. The crane travels along the rails on the first and second pair of wheels in a position generally parallel to the rails. The crane is subject to unbalanced wheel rotating forces causing the crane to frequently attempt to skew. First and second drive mechanisms are respectively connected to the first and second wheels of the first pair of wheels for rotating the first and second wheels independently of each other. A third drive mechanism is connected to both of the third and fourth wheels. The third drive mechanism applies the unbalanced wheel rotating forces on the crane bridge equally to the third and fourth wheels to minimize skew movement of the third and fourth wheels and the independently driven first and second wheels. Minimizing of skew by the third drive mechanism maintains traction at each of the first, second, third and fourth wheels.

REFERENCES:
patent: 2935032 (1960-05-01), Tingokog
patent: 3703016 (1972-11-01), Schramm et al.

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