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Method and device for judging state of deck crane and deck crane system

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

Active Publication Date: 2019-09-10
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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  • Method and device for judging state of deck crane and deck crane system
  • Method and device for judging state of deck crane and deck crane system
  • Method and device for judging state 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 invention provides a state judgment method of a deck crane, which can accurately grasp the state of the deck crane. The state judgment method of the deck crane is a state judgment method of the deck crane arranged on a ship deck, and the state judgment method comprises the following steps: a hydraulic pressure information acquisition step of measuring a hydraulic pressure of a hydraulic circuit for driving the deck crane at every predetermined time, and acquiring a time waveform of the hydraulic pressure; a waveform generation step of generating a hydraulic waveform on a frequency axis byperforming fourier transform on a hydraulic time waveform; and a state determination step of determining the state of the deck crane based on the hydraulic waveform on the frequency axis generated inthe waveform generation step and a preset normal hydraulic waveform which is a hydraulic waveform on the frequency axis when the deck crane is normal.

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 Applications(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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