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Sway-prevention control method for crane

A control method and crane technology, applied in the directions of load hanging components, transportation and packaging, can solve the problems of unsatisfactory application effect and crane anti-sway control technology not being widely used.

Active Publication Date: 2013-09-18
HENAN WEIHUA HEAVY MACHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, the swing characteristics of crane loads are quite different from those of simple pendulums, so the mathematical model of simple simple pendulums is not suitable for analysis of the swing characteristics of crane loads, and the actual application effect is not enough ideal, crane anti-sway control technology has not been widely used

Method used

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  • Sway-prevention control method for crane
  • Sway-prevention control method for crane
  • Sway-prevention control method for crane

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Embodiment Construction

[0021] The anti-sway control method of the crane is mainly to enable the crane control system to automatically adjust and control the running speed of the trolley in real time, and eliminate the swing of the crane load in the shortest possible time. This control method is suitable for all methods of hanging loads with ropes Lifting equipment to carry loads. figure 1 An example of the crane anti-sway control method applied to a bridge (or gantry) crane is described.

[0022] Such as figure 1 Shown, bridge type (or gantry type) crane has cart (bridge frame or portal frame) 9 and trolley 8. The cart 9 carries the dolly 8 and runs on the fixed track, and the dolly 8 runs on the track of the cart 9. The manipulator 1 is an operation console (or remote control device). The operator 1 is equipped with a horizontal operation lever 19, a lifting operation lever 15, a "lanyard calibration" button 16, a "empty hook / lanyard A / lanyard B" multi-position selection button 17, and other ele...

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Abstract

The invention relates to a sway-prevention control method for a crane, which is characterized in that according to the operation demand of the crane, an operating instruction related to a trolley is sent to a controller by an operator; the controller works out the operating speed of the trolley according to a trolley acceleration and deceleration formula; and the operating speed of the trolley is controlled through a frequency converter and a trolley driving motor to realize the sway-prevention control on the crane. According to the sway-prevention control method for the crane, after the crane reaches a uniform motion performed at a specified speed from a stop state, a lifting hook and a load do not sway, and after the crane reaches the stop state from the uniform motion, the lifting hook and the load do not sway as well. Moreover, the control adjustment time of the dynamic process of the crane from a static state to the uniform motion and from the uniform motion to the stop state is the shortest.

Description

technical field [0001] The technical field of crane control of the present invention relates to a control method for preventing the load from swaying when the load suspended by ropes is transported. Background technique [0002] Cranes are widely used in various industrial productions. When manually operating a crane to lift a load suspended from ropes, the load can experience annoying swaying. Unloading operations cannot be performed when the load is swaying. It takes a long operation time to eliminate the sway of the load and adjust the load to the specified target position. Excessive load sway also poses a threat of damage to surrounding goods, the load itself, and on-site operators. In order for the crane to have the anti-sway function, the electrical control system of the crane can automatically adjust and control the running speed of the trolley in real time so that the load does not sway. Different anti-sway control methods have different adjustment control times ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/06
Inventor 龚志明常玉军王贺王玉金
Owner HENAN WEIHUA HEAVY MACHINE
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