A kind of composite arm frame whole assembly and unloading truck

Abstract

The invention discloses a composite cantilever crane whole loading and unloading vehicle which comprises a tray, a second-class chassis and a composite cantilever crane whole loading and unloading device, wherein the composite cantilever crane whole loading and unloading device comprises a composite cantilever crane; the composite cantilever crane comprises a variable-amplitude arm hinged to a turntable system, a variable-amplitude arm variable-amplitude cylinder with one end hinged to the turntable system and other end connected to the upper end of the variable-amplitude arm, a telescopic arm hinged with the upper end of the variable-amplitude arm, a telescopic arm variable-amplitude cylinder with one end hinged to the turntable system and the other end connected to the upper end of the telescopic arm, a hook arm hinged with the upper end of the telescopic arm, and a hook arm variable-amplitude-cylinder with one end hinged to the upper end of the telescopic arm and the other end connected to the front end of the hook arm, wherein a hook head is arranged at the front end of the hook arm, and when the composite cantilever crane whole loading and unloading device is in a totally contracting state, the hook head is hooked with a hook lug of the tray. The composite cantilever crane smartly combines the variable-amplitude arm, the telescopic arm and the hook arm, realizes whole loading and unloading of trays and goods, is quick in loading and unloading and high in efficiency, and also can be used for suspending of a truck mounted crane, thus achieving multiple purposes on one vehicle.

Description

technical field [0001] The invention belongs to a special-purpose vehicle integrating the functions of lifting, loading and unloading, and transportation, and in particular relates to a composite boom-mounted and unloaded vehicle. Background technique [0002] In the prior art, the general self-loading and unloading vehicle has a single function, and cannot realize the function of hoisting goods on the vehicle. [0003] Chinese patent 201310487155.8 discloses a self-contained and unloaded vehicle based on a slidable vehicle-mounted lifting device. In order to solve the problem that the existing self-assembled and unloaded vehicles have a small range of loading and unloading operations and a low carrying capacity of the entire vehicle, the self-assembled and unloaded vehicle based on the slidable vehicle-mounted lifting device includes a chassis, a sub-frame, and a sub-frame. The vehicle-mounted lifting device on the frame, and the pallet; the sub-frame is provided with guid...

AI Technical Summary

Problems solved by technology

[0006] This leads to time-consuming steps of hooking, unhooking, and pushing the pallet into place during loading and unloading, which is inefficient, and the pallet cargo is not restrained during the driving process, and the pallet cargo needs to be additionally equipped with a limit device

[0007] 2) In order to make the jibs of the truck-mounted lifting device shrink in place and occupy a small space, the luffing of the telescopic arm adopts the form of an oil cylinder and a pull plate, and the luffing mechanism is more complicated

[0009] The main defects of these structures are: (1) The telescopic arm needs to be stretched with load to hoist the goods a little far away from the car body, and the working range is limited

(2) Due to the need for on-load expansion and contraction, the requirements for the strength and rigidity of the boom and the expansion cylinder are very high, resulting in an increase in manufacturing costs

(3) For the latter structure with a luffing arm, the force transmission path between the telescopic arm and the luffing arm is not direct enough; Rigidity needs to be designed to be greater

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