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State judging method and device of deck crane and deck crane system

A deck crane and state judgment technology, applied in cranes, transportation and packaging, load hanging components, etc., can solve the problems of unusable deck cranes and reduced utilization efficiency.

Active Publication Date: 2020-07-17
MITSUBISHI HEAVY IND MACHINERY SYST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, when a hydraulic pump breaks down in an unexpected location, the deck crane may not be available, or it may be repaired in a location without maintenance equipment, reducing utilization efficiency

Method used

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  • State judging method and device of deck crane and deck crane system
  • State judging method and device of deck crane and deck crane system
  • State judging method and device of deck crane and deck crane system

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Embodiment Construction

[0031] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, this embodiment does not limit this invention, Moreover, when there are several embodiment, the structure which combined each embodiment is also included.

[0032] figure 1 It is a figure which shows an example of the deck crane system of this embodiment. The deck crane system 100 of the present embodiment is installed on a deck 102 of a ship 101 such as a cargo ship, and is a work machine used when loading and unloading an object C on the ship 101 . The deck crane system 100 includes: a deck crane 10 ; a hydraulic drive device 20 ; a deck crane control device 22 ; and a state judging device 24 .

[0033] A plurality of deck cranes 10 are provided on the deck 102, for example, four are provided, but the number is not limited thereto. figure 2 It is a figure which shows an example of a deck crane. Such as figure 2 As shown, the deck ...

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Abstract

The present invention provides a state judging method of a deck crane which accurately grasps the state of the deck crane. The method for judging the state of a deck crane is a method for judging the state of a deck crane installed on the deck of a ship, and includes a hydraulic pressure information obtaining step of measuring the hydraulic pressure of a hydraulic circuit for driving the deck crane every predetermined time to obtain a time waveform of the hydraulic pressure. The waveform generation step is to generate the hydraulic waveform on the frequency axis by performing Fourier transform on the hydraulic time waveform; the state judgment step is based on the hydraulic waveform on the frequency axis generated in the waveform generation step and the preset deck crane when it is normal The hydraulic waveform on the frequency axis is the normal hydraulic waveform to judge the state of the deck crane.

Description

technical field [0001] The invention relates to a state judging method of a deck crane, a state judging device of a deck crane and a deck crane system. Background technique [0002] In ships, there are machines equipped with deck cranes as machines for lifting and unloading cargo. Patent Document 1 describes a deck crane that uses a hydraulic drive device including a hydraulic pump as a drive source. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: (Japanese) Unexamined Patent Publication No. 2002-220189 [0006] Since the deck crane described above moves together with the ship, opportunities for maintenance are limited. For example, when a hydraulic pump breaks down in an unexpected place, the deck crane may not be available, or it may be repaired in a place without maintenance equipment, reducing utilization efficiency. Therefore, it is desired to accurately grasp the state of the deck crane. Contents of the invention [0007] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/16B66C23/84B66C23/62
CPCB66C13/16B66C23/84B66C23/62
Inventor 大串泰斗
Owner MITSUBISHI HEAVY IND MACHINERY SYST LTD
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