High-lift operation vehicle working bucket leveling mechanism

Abstract

The invention relates to a working bucket leveling mechanism for an overhead working truck, which has a rotary table compensating cylinder, a lower arm compensating cylinder, a lower arm, an upper arm compensating cylinder, a working bucket compensating cylinder, an upper arm, a jointed connecting rod, a first connection rod, a second connecting rod, a working bucket bracket, a third connecting rod and a fourth connecting rod. The leveling mechanism guarantees the angle between the jointed connecting rod and the horizontal plane unchanged by adopting the rotary table compensating cylinder and the lower arm compensating cylinder that have the same performances and parameters. The working bucket compensating cylinder and the upper arm compensating cylinder which have the same performances and parameters work together with a linkage for the connecting part of the upper and the lower arms and a linkage for the working bucket; in the way, an overhead working balanced construction with a telescopic arm is formed, which solves the problems that the deadweight balancing performance of the working bucket is poor, the shake is serious and the stability is poor. The leveling mechanism is a pure hydraulic mechanism, which is not affected by intense electric field or magnetic field during the overhead working and the working bucket can work stably and is always maintained at the horizontality within plus or minus one degree.

Description

Technical field: [0001] The invention relates to a working bucket leveling mechanism of an aerial work vehicle, which is mainly used for leveling the working bucket of an insulating aerial work vehicle with double-folding multi-telescopic working arms. Background technique: [0002] The leveling function of the working bucket of the existing aerial work vehicle is relatively weak. For example, the electro-hydraulic leveling system of the working bucket is only suitable for non-insulated aerial work vehicles. It is greatly affected by the interference of high electric field and high magnetic field, and the signal is prone to error, which affects safety. ; The parallelogram balance structure is only suitable for aerial work vehicles with folding arm structures without telescopic arms; the working bucket has poor self-weight balance, large shaking, and poor stability. Invention content: [0003] The technical problem to be solved by the present invention is to overcome the ab...

AI Technical Summary

Problems solved by technology

[0005] The present invention uses the turntable balance oil cylinder and the lower arm balance oil cylinder with the same performance and parameters to ensure that the angle between the combined connecting rod and the horizontal plane remains unchanged, and uses the working bucket balance oil cylinder and the upper arm balance oil cylinder with the same performance and parameters to connect with the upper and lower arms The connecting rod group and the working bucket connecting rod group cooperate to form a balance structure of the aerial work vehicle that adapts to the folding arm structure with telescopic arms, which solves the problems of poor self-weight balance, large shaking and poor stability of the working bucket

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