US 5,477,454 AGranted

Turning system for use in a track-laying vehicle

AssigneeKabushiki Kaisha Komatsu Seisakusho

InventorsTsutomu Ishino, Ryoichi Maruyama, Hideki Yamada

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Abstract

A turning system for use in a track-laying vehicle comprising: a power source; a steering motor driven by the rotation of the power source, for driving crawler belts provided at both sides of the vehicle such that a relative travel difference is caused between the crawler belts, thereby turning the vehicle rightwards or leftwards; a power source revolution speed detector for detecting the actual revolution speed of tile power source; and a steering motor control unit for performing a control such that, a target revolution speed set for the steering motor is decreased when the actual revolution speed of the power source detected by the power source revolution speed detector decreases below a target revolution speed set for the power source by a specified revolution speed or more.

Claims11

Dependent claims

A turning system for use in a track-laying vehicle comprising:

(a) a rotary power source;
(b) a steering motor driven by rotation of the power source, for driving crawler belts provided at both sides of the vehicle such that a relative travel difference results between the crawler belts, thereby turning the vehicle rightwards or leftwards;
(c) power source revolution speed detector means for detecting the actual revolution speed of the power source;
and
(d) steering motor control means for performing a control such that, a target revolution speed set for the steering motor is decreased when the actual revolution speed of the power source detected by the power source revolution speed detector means decreases below a target revolution speed set for the power source by a revolution speed of a specified magnitude or a magnitude greater than the specified magnitude.

2 more elements

Dependencies are inferred from the claim text.