Linkage arrangement for a wheel loader

Details Linkage arrangement for a wheel loader Linkage arrangement for a wheel loader

1994-11-28

1997-02-04

Underwood, Donald W.

Material or article handling

Vertically swinging load support

Shovel or fork type

414722, E02F 338

Patent

active

055991580

ABSTRACT:
In the operation of a wheel loader the linkage arrangement that mounts the bucket to the machine often utilizes multiple lift arms and tilting components to accommodate the loading encountered in the various excavation operations. In many instances this hampers visibility to the bucket and also greatly increases the overall weight of the linkage arrangement. The present invention provides a linkage arrangement that utilizes a single boom-type lift arm and a tilting arrangement that is substantially centered along a vertical plane in which the linkage arrangement is moved. In addition, the individual components of the linkage are specifically contoured to provide a sufficient amount of mass in critical areas of loading and reduced areas of mass in non-critical areas. The result is a linkage arrangement that provides excellent visibility to the bucket with greatly reduced overall weight.

REFERENCES:
patent: 2764306 (1956-09-01), Dorkins
patent: 3254780 (1966-06-01), Midtbo
patent: 3487958 (1970-01-01), Shook et al.
patent: 3890696 (1975-06-01), Buske
patent: 4077140 (1978-03-01), Branconi
patent: 4155470 (1979-05-01), Moore et al.
patent: 4257732 (1981-03-01), Staffanson
patent: 4358240 (1982-11-01), Shumaker
patent: 4529460 (1985-07-01), Hasegawa et al.
patent: 4768917 (1988-09-01), Garman
patent: 4813163 (1989-03-01), Livingston et al.
patent: 5152659 (1992-10-01), Waka

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