The invention discloses a crank arm type hydraulic aerial cage leveling device which comprises a platform, a sixth chain wheel, an arm frame, a rotary table, a first chain wheel, a lower arm, a second chain wheel, a first oil cylinder, a first chain, a lower telescopic arm connected with the other end of the lower arm, a third chain wheel fixed to the upper face of the lower telescopic arm, an upper arm connected with the third chain wheel, a fourth chain wheel installed on the upper arm, a second oil cylinder with a cylinder barrel fixed to the upper arm, a second chain, an upper telescopic arm connected with the other end of the upper arm, a fifth chain wheel installed on the arm frame, a third oil cylinder with a cylinder barrel fixed to the arm frame and a third chain wound around the fifth chain wheel and the sixth chain wheel and connected to cylinder rods at the two ends of the third oil cylinder, wherein the other end of the upper telescopic arm is connected with the arm frame. The crank arm type hydraulic aerial cage leveling device is used for a hydraulic aerial cage with the multiple folding arms and the multiple telescopic arms and the large leveling angle can be achieved; the leveling device does not need an upright or a parallelogram structure, the weight of a structural member is reduced, and meanwhile the structure of the arm frame is greatly reduced.
Crank arm type hydraulic aerial cage leveling device
2015-08-12
Patent
Electronic Resource
English
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
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