Aerial Work Platform Trailer Mounted Articulating Telescopic Towable Boom Lift

The folding arm aerial work vehicle includes a turntable, a boom, and a work platform. Among them, there are 3 moving arms, which are the lower arm which is rotatably connected with the turntable, the middle arm which is rotatably connected with the lower arm, and the upper arm which is rotatably connected with the middle arm. The lower end of the lower arm is hinged on the turntable and is driven by the lower arm hydraulic cylinder; the lower end of the middle arm is hinged with the upper end of the lower arm and is driven by the middle arm hydraulic cylinder; one end of the upper arm is hinged with the upper end of the middle arm and is driven by the upper arm hydraulic cylinder , the other end of the upper arm is hinged with the working platform. In order to meet the requirements of the highest working height, the angle between the booms of the aerial work vehicle should be large enough. On the other hand, in order to prevent the hydraulic cylinder from being pulled back due to the excessive included angle between the booms, a certain angular margin is reserved at the extreme position of each boom. Through mechanical analysis and verification, the movement range of the lifting mechanism in the luffing plane is approximately: the angle between the lower arm and the horizontal plane is 0-86°, and the angle between the middle arm 4 and the lower arm 3 is in the range of 0-86°. is 0-166°, and the angle between the upper arm and the middle arm ranges from 0-180°.

 When in use, the rotary table automatically levels the work platform. If the working platform has not moved to the expected working position, repeat the operation of the rotary table, lower arm or middle arm until the operator reaches the expected working position. The boom system should be able to recover automatically. When recovering, the middle arm first moves to the initial position (incl. angle) relative to the lower arm, and the upper arm follows suit to automatically level the work platform; after the middle arm is fully recovered, the lower arm starts to recover, and the middle arm and The lower arm remains relatively static, the upper arm keeps the work platform level with the follow-up, and after the lower arm returns to the initial position, the boom system is fully retracted.