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Method and system for detecting load failure of telescoping mechanism drive

A technology of a driving device and a telescopic mechanism is applied in the field of detecting the load failure of the driving device of the telescopic mechanism, which can solve problems such as no alarm and achieve the effect of improving safety.

Active Publication Date: 2016-08-03
CHINA SHENHUA ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and system for detecting the failure of the load in the drive device of the telescopic mechanism in view of the shortcoming that the telescopic mechanism of the ship loader has no alarm at present. Timely alarm and stop operation to avoid further accidents

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  • Method and system for detecting load failure of telescoping mechanism drive
  • Method and system for detecting load failure of telescoping mechanism drive
  • Method and system for detecting load failure of telescoping mechanism drive

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Embodiment approach

[0039] According to a preferred embodiment of the present invention, the difference rate may satisfy the following formula (2):

[0040] When T 1 ≥T 2 hour,

[0041] When T 1 2 hour, (2)

[0042] Among them, T 1 is the output torque of the left inverter, T 2 is the output torque of the right frequency converter, and n is the difference rate.

[0043] According to a preferred embodiment of the present invention, the method for detecting failure of the load in the drive device of the telescoping mechanism may further include alarming and / or sending an instruction to stop telescoping when the difference rate is greater than a predetermined error rate critical value.

[0044] The operator of the telescopic mechanism of the port shiploader can monitor the output and display of the difference rate in real time, and judge whether the load of the telescopic mechanism drive device has failed based on experience. However, due to the complex working environment of the port and ...

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Abstract

The invention discloses a method and system for detecting faults of loads of a driving device of a telescopic mechanism. The method includes the steps that action command signals are sent to a left frequency converter and a right frequency converter; output torque of the left frequency converter and output torque of the right frequency converter are acquired; the difference value rate of the output torque of the left frequency converter and the output torque of the right frequency converter is calculated, output and displayed. Whether faults occur in loads of the driving device of the telescopic mechanism of a ship loader or not is judged by comparing the output torque of the left frequency converter driven by a left load with the output torque of the right frequency converter driven by a right load, when the faults occur, an alarm and a command for stopping the telescopic action can be given, and therefore safety of operation of the telescopic mechanism is improved.

Description

technical field [0001] The present invention relates to the field of fault detection, and more specifically, to a method and system for detecting load faults of a telescoping mechanism driving device. Background technique [0002] The telescopic mechanism is an important component of the ship loader. The telescopic mechanism of the ship loader in most ports adopts the driving mode of two inverters to drive two sets of loads. However, according to the current design method, there is no alarm device on the telescopic mechanism. When one of the parts of the left load drive or the right load drive fails to perform telescopic action again, it will only rely on another set of load drive to bear the weight. Cause another set of load-driven components to fail, and even cause the load shaft to break, and a major accident in which the arm of the ship loader falls into the sea will not only cause damage to the equipment, but also cause casualties. Contents of the invention [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
Inventor 刘华琳韩斌刘利平崔永祥顾凯周月才陈新峰
Owner CHINA SHENHUA ENERGY CO LTD