Dumper rear door lifting device

Abstract

The invention belongs to the technical field of dumpers, and particularly relates to a dumper rear door lifting device; a liftable rear door is arranged at the rear end of a dumper bucket, lifting mechanisms are fixedly connected to two sides of the upper end of the rear door respectively, and locking mechanisms are arranged on two sides of the lower end of the rear door respectively; each liftingmechanism comprises a lifting oil cylinder, a first oil cylinder top end, a first oil cylinder base, a lower hinge seat, an upper hinge seat, a connecting seat, a lifting lug plate, a connecting sideplate, a connecting top plate, a hinge pin shaft, a lifting lug pin shaft, a first oil cylinder lifting pin, a first oil cylinder bottom pin, a lifting lug shaft sleeve, a side sealing cover plate and a side sealing bolt; each lock catch mechanism comprises a lock catch oil cylinder, a second oil cylinder top end, a second oil cylinder base, a second oil cylinder top pin, a second oil cylinder bottom pin, a fulcrum hinge base, a lock catch hook plate, a fulcrum pin, an elastic spring plate and a connecting bolt. The lifting mechanisms lift the height of the rear door, prevent the rear door from touching the ground, completely releases the unloading caliber and quickly unloads the large-angle rear tipping bucket, and the lock catch mechanisms are additionally arranged to enhance sealing ofthe rear door and prevent material leakage in the transportation process.

Description

technical field [0001] The invention belongs to the technical field of dump trucks, and in particular relates to a lifting device for a rear door of a dump truck. Background technique [0002] A dump truck, also known as a dump truck, refers to a vehicle that unloads goods by itself through hydraulic or mechanical lifting. Because the loading compartment can automatically tip over to unload at a certain angle, it saves unloading time and labor, shortens the transportation cycle, improves production efficiency, and reduces transportation costs. It is an important tool for loading and unloading bulk materials such as earthwork, sand and gravel. In civil engineering, dump trucks are often combined with construction machinery such as excavators, loaders, and belt conveyors to form an integrated production line for loading, transporting, and unloading. [0003] Common dump trucks have two unloading methods: side unloading and rear unloading. The side unloading dump truck has a l...

AI Technical Summary

Problems solved by technology

[0004] At present, the rear unloading dump trucks on the market generally have the following problems: 1. When lifting and unloading, because the rear overhang is too large, the rear door touches the ground, the unloading caliber is limited, and the material slide is blocked, which affects the unloading rate

2. The tilting angle of the rear door is limi

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