System and method for controlling position of lifting hook of crane, as well as crane

Abstract

The invention provides a system for controlling the position of a lifting hook of a crane. The control system comprises a length variation detecting unit and a lifting hook lifting control unit, wherein the length variation detecting unit comprises a length judging unit and/or a command judging device; the length judging unit is used for detecting the real-time length of a telescopic arm and judging whether the acquired real-time lengths of the telescopic arm are the same or not, and confirming the length variation of the telescopic arm when the acquired real-time lengths of the telescopic arm are not the same; the command judging device is used for detecting whether the driving device receives a corresponding driving command or not, and confirming the length variation of the telescopic arm when the driving device receives the corresponding driving command; and the lifting hook lifting control unit is used for controlling the lifting of the lifting hook when the length of the telescopic arm changes, so that the lifting hook is in a pre-set safe height range. According to the other side of the invention, the invention further provides a method for controlling the position of the lifting hook of the crane as well as the crane. According to the technical scheme of the invention, the lifting hook can be adjusted intelligently according to the length of the telescopic arm, so as to improve the operation efficiency and reduce potential safety hazard during expansion and contraction processes.

Description

technical field [0001] The invention relates to the field of cranes, in particular to a crane hook position control system, a control method and a crane. Background technique [0002] The automatic telescopic technology of large-tonnage cranes is a very important part of the crane. At present, most large-tonnage cranes adopt automatic telescopic technology. During the automatic telescopic process, the boom angle is generally around 75°, so the observation hook has a certain Difficulty, especially in bad weather or direct sunlight, it is not easy to observe. During the automatic telescopic process, the hook must be raised and lowered manually. necessary loss. [0003] Therefore, there is a need for a new hook control system that can intelligently adjust the hook according to the length of the telescopic boom, improve operational efficiency, and reduce potential safety hazards during the telescopic boom. Contents of the invention [0004] Based on the above problems, the p...

AI Technical Summary

Problems solved by technology

[0002] The automatic telescopic technology of large-tonnage cranes is a very important part of the crane. At present, most large-tonnage cranes adopt automatic telescopic technology. During the automatic telescopic process, the boom angle is generally around 75°, so the observation hook has a certain Difficulty, especially in bad weather or direct sunlight, it is not easy to observe. During the automatic telescopic process, the hook must be lifted and lowered manually. necessary loss

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