Work hopper leveling system and folding arm overhead working truck

Abstract

The invention relates to a work hopper leveling system and a folding arm overhead working truck. The work hopper leveling system comprises a hydraulic subsystem, a control subsystem and a leveling mechanism installed on a lifting arm, wherein the leveling mechanism comprises a bracket, a rocking bar, a connection rod and a leveling oil cylinder, the cylinder barrel end of the leveling mechanism is hinged with the lifting arm through a pin shaft, the bracket is fixedly connected with a work hopper, the bracket and the lifting arm are hinged together at a first hinge point (G) through a pin shaft, one end of the rocking bar, one end of the connection rod and a piston rod of the leveling oil cylinder are hinged together at a second hinge point (D) through pin shafts, the other end of the rocking bar and the lifting arm are hinged together at a third hinge point (E) through a pin shaft, the other end of the connection rod and the bracket are hinged together at a froth hinge point (F) through a pin shaft, the sum of the distance DE between the second hinge point (D) and the third hinge point (E) and the distance GE between the first hinge point (G) and the third hinge point (E) is larger than the sum of the distance DF between the second hinge point (D) and the froth hinge point (F) and the distance GF between the first hinge point (G) and the froth hinge point (F), and the leveling mechanism drives the bracket to rotate relative to the lifting arm by stretching out and drawing back the leveling oil cylinder so as to level the work hopper. The work hopper leveling system can solve the problem that dead points are easy to generate during the leveling process of the work hopper when an amplitude variation angle is large.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a working bucket leveling system and a folding arm aerial work vehicle. Background technique [0002] Aerial work machinery is an aerial work equipment developed on the basis of engineering hoisting machinery, and is widely used in construction, fire protection and other industries. With the continuous development of my country's economic construction, the demand for aerial work vehicles is increasing, and the scope of work is becoming more and more extensive. [0003] Folding arm aerial work vehicle is a special vehicle used to transport staff and work equipment to a specified height for operation. During the lifting process of the boom of the aerial work vehicle, there will inevitably be a certain angle between the boom and the horizontal plane, causing the working bucket to tilt at the same angle. Therefore, the leveling mechanism is required to be able to adjust the tilt...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a working bucket leveling system and a folding arm aerial work vehicle, which can solve the problem that the working bucket leveling is prone to dead spots when the luffing angle is large

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