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US 9,889,882 B2Granted
Dump truck
AssigneeKomatsu Ltd.
InventorsKyouji Uranaka, Taiga Sasaki, Kouichi Okamoto, Takeo Ootsuka
Life of this patent
Estimating the term…
Abstract
A dump truck includes a suspension and a steering mechanism. The suspension includes: a suspension arm in a form of an upper arm having an up-and-down movable proximal end supported on a vehicle body frame; and a tire support in a form of a casing rotatably attached to a distal end of the upper arm. The steering mechanism includes a steering cylinder having a proximal end attached to the upper arm and a distal end attached to a knuckle arm provided to the tire support.
Claims5
A dump truck comprising:
- a vehicle body frame;
- a suspension;
- a steering mechanism;
- tires suspended from the vehicle body frame via the suspension and configured to be steered by the steering mechanism and travel the dump truck;
- and
- a body supported by the vehicle body frame and configured to be raised and lowered,
- the suspension comprising:
- a suspension arm comprising an up-and-down movable proximal end supported on the vehicle body frame;
- and
- a tire support rotatably attached to a distal end of the suspension arm,
- the steering mechanism comprising:
- a steering cylinder comprising a proximal end attached to the suspension arm and a distal end attached to a knuckle arm provided to the tire support, wherein
- the suspension arm comprises an upper arm and a lower arm that are each attached to the vehicle body frame, the upper arm being positioned above the lower arm, and
- the proximal end of the steering cylinder is attached to the upper arm.
11 more elements
A dump truck comprising:
- a vehicle body frame;
- a suspension;
- a steering mechanism;
- tires suspended from the vehicle body frame via the suspension and configured to be steered by the steering mechanism and travel the dump truck;
- and
- a body supported by the vehicle body frame and configured to be raised and lowered,
- the suspension comprising:
- an upper arm comprising an up-and-down movable proximal end supported on an upper support provided to the vehicle body frame;
- a lower arm comprising an up-and-down movable proximal end supported on a lower support provided to the vehicle body frame;
- and
- a tire support rotatably attached between respective distal ends of the upper and lower arms, wherein
- the upper arm comprises a steering cylinder attachment arm extending over the support and further extending inward in a vehicle width direction,
- the steering mechanism comprises a steering cylinder comprising a proximal end attached to the steering cylinder attachment arm and a distal end attached to a knuckle arm provided to the tire support, and
- viewed in the travel direction, the steering cylinder has an axial line overlapping a line passing through a rotation center of the upper arm and the tire support and traversing a motion center of the upper arm on the vehicle body frame.
11 more elements
Dependencies are inferred from the claim text.