US 2015/0308082 A1Published application

Work vehicle

AssigneeKomatsu Ltd.

InventorsTakeshi Takaura, Yoshiki Kami, Jin Kitajima

Life of this patent

Estimating the term…

Loading patent…

Abstract

There is provided a work vehicle in which a work implement can be freely operated. The work vehicle includes: a design surface information acquiring unit for acquiring data of a design surface indicative of a target shape of a work object by the work implement; a cutting edge position computing unit for computing a position of a cutting edge of a bucket; and an operation restricting unit for executing operation restriction control by which, when the cutting edge of the bucket comes closer to the design surface, operation of the work implement is stopped before the cutting edge of the bucket reaches the design surface. In a case where the cutting edge is located away from the design surface in a downward perpendicular direction by a prescribed distance or longer, the operation restricting unit does not execute the operation restriction control.

Claims5

Dependent claims

A work vehicle, comprising:

a work implement having a boom, an arm attached to a distal end of said boom, and a bucket attached to a distal end of said arm;
a design surface information acquiring unit for acquiring data of a design surface indicative of a target shape of a work object by said work implement;
a cutting edge position computing unit for computing a position of a cutting edge of said bucket;
and
an operation restricting unit for executing operation restriction control by which, when said cutting edge of said bucket comes closer to said design surface, operation of said work implement is stopped before said cutting edge of said bucket reaches said design surface, wherein
in a case where said cutting edge is located away from said design surface in a downward perpendicular direction by a prescribed distance or longer, said operation restricting unit does not execute said operation restriction control.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/372,475Filed 24 Apr 2014
Published: 29 Oct 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

E02F 9/262
Surveying the work-site to be treated: with follow-up actions to control the work tool, e.g. controller
E02F 3/32
With a dipper-arm pivoted on a cantilever beam , i.e. boom: working downwardly and towards the machine, e.g. with backhoes
E02F 3/43
Drives for dippers, buckets, dipper-arms or bucket-arms: control of dipper or bucket position; Control of sequence of drive operations
E02F 3/435
Control of dipper or bucket position; Control of sequence of drive operations: for dipper-arms, backhoes or the like