Dynamic modeling method and system for mine multi-rope winding type elevator and storage medium

A technology of mechanical modeling and dynamic model, applied in the direction of instrumentation, design optimization/simulation, electrical digital data processing, etc., can solve problems such as low lateral stiffness and deepen the difficulty of dynamic analysis of hoist system, and achieve the goal of modeling method simple effect

Active Publication Date: 2021-10-22
CHONGQING UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, flexible tanks generally have low lateral stiffness. When a cage full of cargo slides on the tank, the elevator system will also generate complex coupling vibrations with the cage, which further increases the difficulty of dynamic analysis of the elevator system.

Method used

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  • Dynamic modeling method and system for mine multi-rope winding type elevator and storage medium
  • Dynamic modeling method and system for mine multi-rope winding type elevator and storage medium
  • Dynamic modeling method and system for mine multi-rope winding type elevator and storage medium

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Experimental program
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Effect test

Embodiment 1

[0078] The high-fidelity dynamic modeling method of multi-rope winding flexible tank hoist based on three-dimensional space provided by this embodiment includes the following steps:

[0079] The entire system is decomposed into several subsystems from the level of physical components, generally including three systems: hoisting rope, cage, and tank road. Wherein the hoisting rope system includes three parts: hanging rope, sky wheel and hanging rope.

[0080] Each subsystem is modeled with zero boundary conditions, as follows:

[0081] Model the hoisting rope system, describe the dynamic characteristics of the rope in the absolute coordinate system, consider the three-dimensional vibration of the hoisting rope, and write the kinetic energy and potential energy of the hoisting rope system. Write the energy dissipation of the hoist rope system according to the viscous damping model. Finally, using Hamilton's principle, the dynamic equation of the subsystem is obtained under the...

Embodiment 2

[0091] Such as figure 1 as shown, figure 1 It is a schematic diagram of a typical multi-rope winding ultra-deep flexible tank elevator. It is assumed that the rotation of the drum is well controlled, that is, the rotation of the drum is completely consistent with the target lifting curve, and the dynamic response of the drum is ignored in this model. Only the boundary conditions caused by the rollers are introduced in this method. The rope between the drum and the sky wheel is called a suspension rope, and the rope between the sky wheel and the cage is called a suspension rope. At the initial moment, that is, when the lifting has not been carried out, a fixed coordinate system O is established at the midpoint of the line connecting the tangent points between the two drums and the suspension rope c x c the y c z c , establish a fixed coordinate system O at the midpoint of the line connecting the two vertical ropes with the tangent point v x v the y v z v . The length ...

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Abstract

The invention discloses a dynamic modeling method and system for a mine multi-rope winding type hoister and a storage medium, and the method comprises the steps: firstly determining each subsystem in a hoister system, building a dynamic model for each subsystem, and coupling a hoisting rope system, a cage system and a cage guide system through displacement and force to serve as the boundary condition of the dynamical model; and finally, obtaining a time-varying, nonlinear and coupled high-fidelity kinetic equation. According to the method provided by the invention, the physical attributes of all parts of the whole system and the coupling effect among all the parts are considered, and the method is used for revealing the vibration mechanism of the whole system and guiding the design of the structure and the controller. The three-dimensional vibration coupling effect of the lifting rope, three-dimensional motion and three-dimensional rotation of the cage and coupling between the cage and the flexible cage guide are considered, and the model is more real. According to the method, force and displacement are coupled, and the modeling method is simpler and more visual.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering, in particular to a high-fidelity dynamic modeling method, system and storage medium of a multi-rope winding flexible tank hoist based on three-dimensional space. Background technique [0002] In the past few decades, the multi-rope winding ultra-deep hoist has been widely used in the mining of gold mines and diamond mines, which has the characteristics of small drums, thin wire ropes and high efficiency. Recently, the mining of coal mines is getting deeper and deeper, the lifting is faster and faster, and the efficiency is getting higher and higher. The multi-rope winding ultra-deep hoist has been paid more and more attention in the mining of coal mines. But the system is a strongly coupled, time-varying, nonlinear distributed system. High-speed lifting and some small unbalanced factors will cause severe vibration of the whole system. This will cause premature fatigue failure of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F119/14
CPCG06F30/20G06F2119/14
Inventor 皮阳军张建谢志江刘飞宋代平蒲华燕罗均
Owner CHONGQING UNIV
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