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Control method and control device for a lifting platform

A lifting platform and control method technology, applied in control systems, AC motor control, emergency protection circuit devices, etc., can solve the problems of uneven load, overload of lifting motor load, etc., to avoid uneven load, uniform load, and improve the use of effect of life

Active Publication Date: 2019-11-08
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the uneven load on multiple lifting motors may cause frequent overloading of some lifting motors due to excessive load, the embodiment of the present invention provides a control method and control device for a lifting platform

Method used

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  • Control method and control device for a lifting platform
  • Control method and control device for a lifting platform
  • Control method and control device for a lifting platform

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Embodiment Construction

[0037] 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.

[0038] In order to better understand the present invention, the following briefly introduces the rack and pinion lifting platform:

[0039] figure 1 It is a cross-sectional view at the leg of a lifting platform, such as figure 1 As shown, the legs 10 are triangular truss structures, and each leg 10 is provided with three chords 11, each chord 11 is welded with a rack 12, and the ring beam 13 on each leg 10 is provided with There are 3 groups of lifting units 14, each group of lifting units 14 is arranged corresponding to one string tube 11, and cooperates with the rack 12 on the corresponding string tube 11.

[0040] figure 2 It is a schematic diagram of the cooperation between the lifting unit and the rack, such as figure 2 As s...

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PUM

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Abstract

The present invention discloses a lift platform control method and device, belonging to the sea platform technology field. The control method comprises: obtaining real-time torques of a plurality of lifting motors; determining a reference torque; comparing real-time torques of a plurality of lifting motors and the reference torque; improving rotation speeds of lifting motors which have the real-time torques being smaller than the reference torque, and reducing the rotation speed of the lifting motors which have the real-time torques being larger than the reference torque so as to allow the load effected on the lifting motors to be more uniform, avoid the conditions that the loads on the lifting motors are not uniform to cause parts of the lifting motors frequently generate overload because of too big loads and improve the service life of the lifting motors.

Description

technical field [0001] The invention relates to the technical field of offshore platforms, in particular to a control method and a control device for a lifting platform. Background technique [0002] The lifting platform is a structure that provides production and living facilities for drilling, oil production, transportation, observation, navigation, construction and other activities at sea. Common lifting platforms include rack and pinion lifting platforms and hydraulic pin-type lifting platforms. [0003] Among them, the rack and pinion lifting platform mainly includes pile legs, lifting device, platform deck, etc. The platform deck is fixedly connected with the lifting device, racks are arranged on the legs, and multiple lifting motors are arranged in the lifting device. The gear meshes with the rack on the leg, and by controlling the rotation of the lifting motor, the relative movement of the platform deck and the leg can be controlled. [0004] In the process of reali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P5/46H02P27/04H02H7/085
CPCH02H7/0856H02P5/46H02P27/04
Inventor 江志钢徐潇王金秋王泽文程蕾萌
Owner WUHAN MARINE MACHINERY PLANT