Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1979-10-11
1981-12-29
Blix, Trygve M.
Material or article handling
Vertically swinging load support
Shovel or fork type
414722, 414697, 172828, E02F 376
Patent
active
043079920
ABSTRACT:
A load handling vehicle includes a bucket side tilt mechanism with a supporting H-framework comprised of first and second side frame members and a cross-frame member. The side frame members are each coupled at a first end to the body of the vehicle and at a second end to the bucket, while the cross-frame member is pivoted at each end to a respective one of the side frame members so that the cross-frame member pivots during tilting of the bucket and relieves stress on the framework. A pair of dump cylinders coupled between the framework and bucket are provided for emptying the bucket. In addition, a hoist cylinder extends between the framework and the body of the vehicle, at each side of the vehicle, for raising and lowering the framework and thereby the bucket. A tilt cylinder is tandem with one of these hoist cylinders is extended and retracted to tip the framework and in turn tilt the bucket relative to horizontal as desired. A low-pressure relief mechanism is provided for relieving hydraulic pressure at the bucket side of the dump cylinders to minimize stresses applied to the bucket as the tilt cylinder operates.
REFERENCES:
patent: 2684163 (1954-07-01), Boulton
patent: 3184869 (1965-05-01), Olsen
patent: 3998277 (1976-12-01), Wirt
patent: 4019588 (1977-04-01), Casey
Blix Trygve M.
Raygo Wagner, Inc.
Siemens Terrance L.
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