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System of vibration-damping control for crane and method of vibration-damping control for crane

A vibration suppression and control system technology, which is applied to cranes, trolley cranes, transportation and packaging, etc., can solve the problems of insufficient and difficult to cope with large earthquakes, and achieve the effect of easy vibration suppression transformation

Active Publication Date: 2014-11-05
SUMITOMO HEAVY IND MATERIAL HANDLING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the shock absorber cannot be oversized, it is not enough to cope with a large earthquake, and the vibration suppression device is often only effective for a specific frequency component, so there is a problem that it is difficult to cope with the initial stage of a large earthquake.

Method used

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  • System of vibration-damping control for crane and method of vibration-damping control for crane
  • System of vibration-damping control for crane and method of vibration-damping control for crane
  • System of vibration-damping control for crane and method of vibration-damping control for crane

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no. 1 approach

[0029] First, the crane structure of the first embodiment of the vibration suppression control system applied to the crane of the present invention will be described with reference to the drawings. figure 1 It is a front view showing the outline of the structure of a crane to which the first embodiment of the vibration suppression control system for a crane according to the present invention is applied.

[0030] The container crane 10 is to unload the container 16 carried on the container ship 14 approaching the port 12 on the land, and load the container 16 on the land to the container ship 14, and travels along the port 12 and between the land and the hatch of the container ship 14. Cranes that move back and forth. The container crane 10 has: a support structure 20 movably installed on the walking rail 18 laid along the port 12; a girder 22 provided on the top side of the support structure 20; A boom 23 extending in a substantially horizontal direction; a hanger 24 that mov...

no. 2 approach

[0056] Next, the structure of the crane in the second embodiment of the vibration suppression control system applied to the crane of the present invention will be described with reference to the drawings. Figure 4 It is a front view showing an outline of a crane structure to which a second embodiment of the vibration suppression control system for a crane according to the present invention is applied.

[0057] Such as Figure 4As shown, the container crane 50 of the present embodiment is a crane in which a shock absorber 70 such as a damper is attached to a running part or the like provided on the bottom side of the support structure 60 of the container crane 50 . That is, the crane vibration suppression control system of this embodiment is applied to a container crane equipped with a shock absorber, and performs vibration suppression control on the support structure 60 when vibrating based on the operation start signal of the shock absorber 70 . Furthermore, similarly to th...

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Abstract

The present invention is a system of vibration-damping control for a crane, which reduces the vibration of a support structure (20) during shaking of a crane (10) provided with a trolley (24) that moves over a girder (22) and boom (23) provided to a top side of the support structure, wherein the system is provided with: a vibration detection sensor (30) for detecting vibration; a trolley drive unit for driving during movement over the girder (22) and boom (23); a calculation unit for calculating a vibration speed of the support structure on the basis of a detection signal of the vibration detection sensor (30); a determination unit for determining, from a calculation signal of the calculation unit, whether vibration-damping control of the support structure (20) is necessary; and a command signal transmission unit for transmitting to the trolley drive unit a command signal for adjusting the moving speed of the trolley (24) when the determination unit has determined that vibration-damping control is necessary. The present invention thereby makes it possible to facilitate vibration-damping retrofitting and enable the shaking caused by strong winds or earthquakes of a wide range of frequencies and magnitudes to be dealt with.

Description

technical field [0001] The present invention relates to a vibration suppression control system and a vibration suppression control method for cranes such as container cranes when vibrations are caused by earthquakes, strong winds, and the like. Background technique [0002] In recent years, major earthquakes have occurred in various parts of Japan, and container cranes in factories and port facilities have also suffered huge damage. In order to prevent possible major earthquakes in the future and avoid or reduce the damage and damage to container cranes caused by earthquakes when major earthquakes occur, research has been conducted on improving the shock resistance of container cranes, and various shock-absorbing technologies and vibration-suppressing technologies have been developed. [0003] Shock-absorbing technology is to install shock-absorbing devices such as dampers on the running part of the container crane, so that the container crane will not shake with the shaking...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C15/00B66C13/12B66C19/00
CPCB66C19/002B66C15/00
Inventor 内田浩二草野利之
Owner SUMITOMO HEAVY IND MATERIAL HANDLING SYST
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