SAFETY DEVICE OF HYDRAULIC TRAVELING VEHICLE

PROBLEM TO BE SOLVED: To provide a safe hydraulic traveling vehicle prevented from running downhill even if a speed range is erroneously selected in a steep slope. SOLUTION: An operating device 20 of the hydraulic traveling vehicle is provided with a speed range selection switch 22 for selecting a t...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAHASHI SHIGEO, MORI KOICHIRO, NAKAJIMA NORIYOSHI, SUDA MOTOAKI, KOBAYASHI FUTOSHI, ESHITA TAKAYUKI, OIKAWA TOMOHARU, NAKAYAMA TAKASHI, KAMEI KENJI, IINUMA AKIHIKO, MURAYAMA KOICHI, MOMOSE FUMIYA
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAULING HEATING HOISTING HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDEDFOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCEDIRECTLY TO THE SURFACE OF A LOAD LIFTING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a safe hydraulic traveling vehicle prevented from running downhill even if a speed range is erroneously selected in a steep slope. SOLUTION: An operating device 20 of the hydraulic traveling vehicle is provided with a speed range selection switch 22 for selecting a traveling speed range for operation, and a control unit 30 outputs a command signal to an engine speed control circuit 41 and a motor capacity select valve 42 according to a speed range signal input from the switch 22 to change the hydraulic pump rotational frequency and the capacity of a traveling motor, and sets the speed range. The control unit 30 has a speed range regulating circuit 32, which regulates setting of a speed range where the capacity of the traveling motor is a small capacity (low torque state) when an angle of inclination of a car body inputted from an inclination angle detector 70 is higher than a designated inclination angle and sets the speed range with a large capacity (high torque state).