Device and method for expanding and retracting of cantilever crane, intelligent control system and engineering machinery

Abstract

The invention discloses a device and a method for expanding and retracting of a cantilever crane, an intelligent cantilever crane control system and engineering machinery. The cantilever crane comprises multiple sections connected mutually. The device comprises a receiver and a controller; the receiver is used for receiving an expanding instruction of the cantilever crane, current included angle and target included angle of adjacent sections and critical included angle of the adjacent sections without interferences; the controller is connected with the receiver and used for receiving the expanding instruction, regulating the sections so as to keep the included angle between the adjacent sections larger than or equal to the critical included angle when the current included angle is smaller than the critical included angle, and then regulating the sections further according to the target included angle. According to the technical scheme, the cantilever crane can be expanded and retracted automatically, interference during expanding and retracting of each section can be omitted, and damages to the cantilever crane, oil cylinders or upper assemblies of pump trucks are avoided.

Description

Technical field [0001] The invention relates to the field of construction machinery, and in particular to a boom deployment device, a boom deployment method, a boom retraction device, a boom retraction method, a boom intelligent control system, and engineering machinery. Background technique [0002] The concrete pump truck has become a widely used engineering machinery in modern building construction. Due to its application characteristics and complexity, it needs to be controlled by a professional operator. At present, the manipulator controls the movement of the boom through the remote control, and different buttons are set on the remote control to control different boom sections respectively, and the manipulator operates the boom through the buttons. When it is necessary to quickly locate the end of the boom, the experience and proficiency of the operator is very important. When a boom section is moving in a certain direction, the manipulator needs to keep pressing the corre...

AI Technical Summary

Problems solved by technology

When a certain arm section is moving in a certain direction, the operator needs to press the corresponding control button all the time. Although this can make the operator maintain a high degree of attention and ensure the safe movement of the boom, it does increase the operator's work. quantity

Moreover, in the construction of pump trucks, many boom postures are often used. Therefore, the operator often does some repetitive work, and the work efficiency is low.

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