Three-stage telescopic supporting leg device and overhead working truck

The invention belongs to the technical field of overhead working trucks, and particularly relates to a three-stage telescopic supporting leg device and an overhead working truck, the device comprises a horizontal supporting leg seat, a first-stage horizontal supporting leg, a second-stage horizontal...

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Bibliographische Detailangaben
Hauptverfasser:	SHANG XIAOHENG, LU WENJIE, LI GENWEN, DU LEI, YAO JILU, QIU JIANFEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	HAULING 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 PERFORMING OPERATIONS TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention belongs to the technical field of overhead working trucks, and particularly relates to a three-stage telescopic supporting leg device and an overhead working truck, the device comprises a horizontal supporting leg seat, a first-stage horizontal supporting leg, a second-stage horizontal supporting leg, a third-stage horizontal supporting leg, a vertical supporting leg, a hydraulic cylinder assembly and a zipper transmission mechanism, the first-stage horizontal supporting leg can stretch out or retract back relative to the horizontal supporting leg seat, and the second-stage horizontal supporting leg can stretch out or retract back relative to the vertical supporting leg seat; the second-stage horizontal supporting leg can extend or retract relative to the first-stage horizontal supporting leg, and the third-stage horizontal supporting leg can extend or retract relative to the second-stage horizontal supporting leg; the vertical supporting leg is connected with the third-stage horizontal supporti