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A load balancing control method and control device for a lifting system

A lifting system and load balancing technology, which is applied in construction, artificial islands, infrastructure engineering, etc., can solve problems such as different loads, different pinion torques, and unbalanced loads, and achieve the effect of simple implementation

Active Publication Date: 2020-12-08
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the drive of the multi-drive inverter to the pinion that is actually working finally passes through transmission components such as frequency conversion motors and gearboxes, the transmission efficiency of each transmission component is different, which will cause the final torque output to the pinion to be different. Therefore The load carried by each pinion will also vary, resulting in an unbalanced load between the lifting units

Method used

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  • A load balancing control method and control device for a lifting system
  • A load balancing control method and control device for a lifting system
  • A load balancing control method and control device for a lifting system

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] In order to better understand the present invention, the specific structure of the lifting system is briefly described below:

[0044] There are multiple lifting units on each leg of the lifting system, and each lifting unit includes a frequency conversion motor, a gearbox and a pinion arranged on the output shaft of the gearbox, and the frequency conversion motors in multiple lifting units are controlled by multi-drive frequency conversion The speed of each transmission in the multi-drive inverter is independently controlled, and each transmission is set in one-to-one correspondence with the frequency conversion motor. The frequency conversion motor drives the pinion on the output shaft of the gearbox to rotate, and each transmi...

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Abstract

The invention discloses a load balance control method and a control device of a lifting system, and belongs to the technical field of ocean platform lifting systems. The load balance control method includes the steps that real-time loads of each pinion in a plurality of lifting units are obtained; real-time load differences of each pinion are calculated; rotating speed of each driving corresponding to the pinions is adjusted according to the real-time load differences of each pinion and working conditions of the lifting system, so that the torque finally outputted to each pinion is the same, and then the load borne by each pinion is the same, and thus the purpose of balancing the load of each lifting unit can be achieved. The load balance control method of the lifting system is simple to implement, reliable in result, and has high economic benefits.

Description

technical field [0001] The invention relates to the technical field of offshore platform lifting systems, in particular to a load balance control method and control device for the lifting system. Background technique [0002] Offshore platform rack and pinion lifting system is a kind of offshore platform lifting system widely used at present. Due to the characteristics of cleanliness, high efficiency and easy maintenance of variable frequency drive rack and pinion lifting system, it has been more and more used in the field of lifting systems. [0003] There are multiple lifting units on each leg of the variable frequency drive rack and pinion lifting system. Each lifting unit includes a frequency conversion motor, a gearbox and a pinion arranged on the output shaft of the gearbox. The pinion and the pinion on the leg The rack meshes, and the variable frequency motor drives the pinion on the output shaft of the gearbox to rotate. The frequency conversion motors in multiple l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B17/08
CPCE02B17/08E02B17/0818
Inventor 王泽文江志钢王金秋胡明佳童东坡
Owner WUHAN MARINE MACHINERY PLANT