Dynamic characteristic analysis method of corrugated flange belt type lifting system for ship unloader

By establishing a fractional derivative viscoelastic model and dynamic equations, the problem of describing the dynamic response characteristics of a corrugated sidewall belt lifting system under dynamic conditions was solved, achieving high-precision dynamic analysis and structural optimization, and reducing the safety factor and manufacturing cost.

CN122365863APending Publication Date: 2026-07-10HAIYANG MINGSHUO MASCH CO LTD
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Patent Information

Application Number
CN202610479905.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-13
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing technologies cannot accurately describe the dynamic response characteristics of corrugated sidewall belt lifting systems under dynamic working conditions, especially the stress-strain relationship under factors such as loading frequency, temperature changes, and load history. This results in a high safety factor for the conveyor belt, high manufacturing costs, and difficulty in preventing belt breakage accidents.

Method used

A fractional derivative viscoelastic model is adopted. By constructing a fractional derivative viscoelastic model of the corrugated sidewall conveyor belt, the dynamic equations of the conveyor belt, drive device and tensioning device are established. The discrete and continuous dynamic models are solved by combining the Wilson-θ method to obtain the acceleration, velocity and displacement of the conveyor belt.

Benefits of technology

It enables high-precision dynamic response analysis of corrugated sidewall belt lifting systems under dynamic working conditions, reduces the safety factor of conveyor belts, simplifies structural design, reduces manufacturing costs, and can more accurately predict dynamic characteristics.

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Abstract

The invention provides a dynamic characteristic analysis method for a corrugated flange belt type lifting system for a ship unloader, and the method comprises the steps: constructing a fractional derivative viscoelastic model of a corrugated flange conveying belt, and building a dynamic basic equation of the corrugated flange conveying belt; establishing a conveyor belt discrete kinetic equation, a driving device kinetic equation and a tensioning device kinetic equation, and establishing a discrete kinetic model of the corrugated flange belt type lifting system; establishing a continuous kinetic equation of the conveying belt, setting boundary conditions and initial conditions, and establishing a continuous kinetic model of the corrugated flange belt type lifting system; and solving the discrete dynamic model of the corrugated flange belt type lifting system or the continuous dynamic model of the corrugated flange belt type lifting system to obtain the acceleration, the speed and the displacement of the corrugated flange belt type lifting system, and obtaining the dynamic response of the corrugated flange belt type lifting system. A fractional order derivative type viscoelastic model is adopted, and a kinetic model is further established, so that the dynamic characteristics of each stage of the corrugated flange belt type lifting system are reflected more truly.
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