Support arm pedal unlocking mechanism

The utility model belongs to the technical field of lifting machines, and particularly relates to a support arm pedal unlocking mechanism. The utility model provides a support arm pedal unlocking mechanism which is convenient to operate. The unlocking device comprises a first-stage support arm 1, a...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG YUEYANG, WANG ZHIFU, BING CHANGSONG, FAN HUIGUO, WANG YU
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 utility model belongs to the technical field of lifting machines, and particularly relates to a support arm pedal unlocking mechanism. The utility model provides a support arm pedal unlocking mechanism which is convenient to operate. The unlocking device comprises a first-stage support arm 1, a second-stage support arm 25 and a third-stage support arm 26, the first-stage support arm 1 is connected with the second-stage support arm 25 through a gear shaft 27, the second-stage support arm 25 is connected with the third-stage support arm 26, and the unlocking device is characterized in that an unlocking plate 2 is arranged in a square tube 3 of the first-stage support arm 1, a strip-shaped notch 7 is formed in the front end of the unlocking plate 2, a square hole 11 is formed in the middle of the unlocking plate 2, and the square tube 3 of the first-stage support arm 1 is connected with the strip-shaped notch 7. The square tube 3 is provided with a round hole 12 corresponding to the square hole 11, the unloc