| 摘要 |
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.
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