Six-freedom-degree crane having metamorphic function

Abstract

A six-freedom-degree crane having a metamorphic function includes a hoisting jib mechanism, a jib telescoping mechanism and a metamorphism control mechanism. The hoisting jib mechanism is composed of a cargo boom and a suspension jib and enables the crane to complete grabbing, hoisting and unloading and such space operations of containers. The jib telescoping mechanism, which is in a parallel structure, is composed of three mechanical sub chains connected in series. The metamorphism control mechanism is formed by connection of linkage rods and is motion-synthesized with the hoisting jib mechanism. By means of the mechanical connection method, the crane is compact in structure and is high in reliability, so that the crane can effectively overcome the defects that hydraulic components of a hydraulic crane are high in processing precision requirement, high in maintaining cost and low in reliability degree and are liable to cause oil leakage. The six-freedom-degree crane is simple in control and is large in operating space, can be widely applied in grabbing, hoisting and unloading and such complex operations of the containers.

Description

technical field [0001] The invention relates to the field of hoisting machinery, in particular to a six-degree-of-freedom crane with metamorphic functions. Background technique [0002] Cranes belong to material handling machinery, which is a multi-action hoisting machinery that vertically lifts and horizontally carries heavy objects within a certain range, also known as a crane. Cranes can complete actions such as reclaiming, transporting, and unloading in one working cycle, and are being developed and used more and more widely in the market. Traditional cranes complete work tasks through the joint drive of telescopic cylinders and pitching cylinders, but this kind of cranes adopts pure hydraulic transmission, and its hydraulic system has obvious shortcomings such as high parts processing and assembly requirements and loopholes, and traditional cranes use The open-chain series structure has disadvantages such as poor rigidity, low reliability, and large cumulative error. ...

AI Technical Summary

Problems solved by technology

The lifting arm mechanism is composed of a lifting arm and a boom, enabling the crane to complete space operations such as grabbing, lifting, and unloading of containers; the parallel boom telescopic mechanism is composed of three series-connected mechanism sub-chains The metamorphic control mechanism is connected by connecting rods, and is combined with the movement of the lifting arm mechanism; the mechanism adopts a mechanism connection to make the crane have a compact structure and high reliability, and can effectively overcome the processing accuracy requirements of the hydraulic components of the hydraulic crane High maintenance cost, low reliability, easy oil leakage and other disadvantages. At the same time, the invention has the advantages of simple control and large working space, and can be widely used in complex operations such as grabbing, lifting and unloading of containers.

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