Linkage mechanism of a work implement

Details Linkage mechanism of a work implement Linkage mechanism of a work implement

1991-11-21

1993-02-09

Huppert, Michael S.

Material or article handling

Vertically swinging load support

Shovel or fork type

414700, E02F 328

Patent

active

051849321

ABSTRACT:
A linkage mechanism of a work implement installed in a loading vehicle such as a shovel-loader or the like, which is adapted to vertically move a bucket as held in a horizontal state without operating tilt-cylinder, while preserving the function of the Z-bar linkage in the prior art; in which linkage mechanism, when the distance from a pivotable support point (A) between a bucket (3) and a lift arm (1) to a pivotable support point (B) between the lift arm (1) and a bellcrank (5) is represented by (X) and the distance from the above-mentioned pivotable support point (B) to a pivotable support point (O) between the lift arm (1) and a vehicle body (9) is represented by (Y), they are preset so as to fulfil Y/X=.alpha., and also, first and second triangles (.DELTA.ABC, .DELTA.OBE) formed by the liftarm (1) and the bellcrank (5) on the vehicle body side and on the bucket side, as well as a third triangle (.DELTA.ADC) formed by a tilt rod (6) and the bucket (3) and a fourth triangle (.DELTA.OFE) formed by a tilt cylinder and the vehicle body (9) are preset so as to respectively fulfil a mutually similar figure relation.

REFERENCES:
patent: 4154349 (1979-05-01), Christensen

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