Apparatus for controlling speed of working machine in the form o

Details Apparatus for controlling speed of working machine in the form o Apparatus for controlling speed of working machine in the form o

1990-07-06

1991-07-02

Spar, Robert J.

Material or article handling

Vertically swinging load support

Shovel or fork type

91508, E02F 920

Patent

active

050281992

ABSTRACT:
The present invention is concerned with a working machine in the form of a construction machine including booms 2 and a bucket 4 such as a wheel loader, a shovel loader or the like. When a scooping operation is performed by alternately repeating a tilting operation with the use of only a bucket operation lever 16 while a boom operation lever 15 is held at a boom kick-out position, a lifting operation for the booms 2 and a tilting operation for the bucket 4 while the boom operation lever 15 is shifted to a neutral position, a lift speed of the booms 2 is variably controlled to a speed corresponding to a tilt speed of the bucket or an angle of the booms whereby the tilt speed is harmonized with the boom speed.

REFERENCES:
patent: 3726428 (1973-04-01), Lark et al.

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