Straddle crane steering system

Details Straddle crane steering system Straddle crane steering system

1988-04-22

1989-11-14

Basinger, Sherman D.

Traversing hoists

Having horizontally swinging boom or bridge

Having fluid ram directly actuating load cable or sheave...

180140, 180252, B66C 502

Patent

active

048801240

ABSTRACT:
The invention is suitable for use in a straddle-type crane having a frame and four corners, and comprises a system for the manual resynchronization or automatic synchronous movement of a plurality of pairs of steerable wheels. The pairs of steerable wheels are pivotal relative to the frame. The system comprises a hydraulically-actuated link and tie rod at each corner of the frame to turn all pairs of steerable wheels at each corner of said frame. It further comprises a hydraulic cylinder for each of the hydraulically-actuated links and tie rods, with the hydraulic cylinders being connected to each other in series relationship. The system also comprises a steering orbitrol which directs hydraulic fluid through the series-connected hydraulic cylinders.

REFERENCES:
patent: 3081883 (1963-03-01), Minty
patent: 3161309 (1964-12-01), Baudhuin et al.
patent: 3247975 (1966-04-01), Holt et al.
patent: 3329284 (1967-07-01), Bogart et al.
patent: 3877391 (1975-04-01), Gimperlein et al.
patent: 4444287 (1984-04-01), Voelz
patent: 4531604 (1985-07-01), Lamer

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