STEERING DEVICE, INDUSTRIAL VEHICLE AND PROGRAM

PROBLEM TO BE SOLVED: To reduce uneven wear of tires more than in a conventional case in an industrial vehicle which performs steering wheel restoration control.SOLUTION: In a steering device loaded on a forklift, operation control (steering wheel restoration control) of a steering mechanism is exec...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HAYASHI KATSUHIKO, IWAMOTO TAKETERU
Format: Patent
Sprache:eng ; jpn
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To reduce uneven wear of tires more than in a conventional case in an industrial vehicle which performs steering wheel restoration control.SOLUTION: In a steering device loaded on a forklift, operation control (steering wheel restoration control) of a steering mechanism is executed so that a steering angle of steering wheels becomes a predetermined reference angle when predetermined permission conditions are satisfied in stop of the forklift in restoration control processing to be executed by a controller (S160). Here, in the restoration control processing, whether or not a road surface in the stop of the forklift is in a state (low wear state) of small ruggedness is determined (S140), and the steering angle restoration control is executed by using a fact that the road surface is determined as the low wear state (S150; YES) is a road surface condition which is one of the permission conditions. Namely, since the steering wheel restoration control is executed according to a road surface state in parking or the stop, rubbing of tires on a road surface with large ruggedness is eliminated in the steering wheel restoration control. 【課題】操舵輪復帰制御を行う産業車両において、タイヤの偏摩耗を従来よりも低減させる。【解決手段】フォークリフトに搭載されたステアリング装置では、コントローラが実行する復帰制御処理において、フォークリフトの停止時に所定の許可条件を満たしている場合に、操舵輪の舵角が所定の基準角となるように操舵機構の作動制御(操舵輪復帰制御)を実施する(S160)。ここで、復帰制御処理では、フォークリフトの停止時における路面が凹凸の小さい状態(低摩耗状態)であるか否かを判定し(S140)、低摩耗状態であると判定されることを(S150;YES)、上記の許可条件の一つである路面条件として、操舵輪復帰制御を実施する。すなわち、駐停車時の路面状態に応じて操舵輪復帰制御が実施されるため、操舵輪復帰制御において凹凸の大きい路面でタイヤが擦れることがなくなる。【選択図】図3