Influence of structural elasticity on transshipment dynamics of dual-trolley overhead crane

The complex problem of the spatial motion of the "trolley-beam" mechanical system is investigated. Three stages are considered: 1) movement of the beam on a bifilar suspension to the movable trolley; 2) movement of the beam after the breakage of one branch of the suspension; 3) movement of the beam after the breakage of the second branch of the suspension. The study was carried out by creating mathematical models for each stage of the system movement and then conducting a numerical experiment using computer algebra. The tension of the ropes is calculated at the first and second stages of the system movement. Their extreme values are determined. The obtained results will be used in the further study of the system to reduce the tension of the rope and oscillation amplitude and to prevent accidents.

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“…There is a study of a flat (not spatial) model of the beam behavior after the breakage of one of the rope branches of the overhead crane [45].…”

Section: Literature Review and Problem State-mentmentioning

confidence: 99%

Spatial transportation of the beam on a bifilar fastening

Stadnik¹,

Podlesny²,

Kaporovych³

et al. 2022

FME Transactions

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Swing Characteristics and Vibration Feature of Tower Cranes under Compound Working Condition

Yang

Wang

et al. 2021

Shock and Vibration

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The swing behaviour of tower cranes under compound working conditions is closely related to construction safety and structural health. This paper presents dynamic models and simulated them for parameter analysis to understand tower cranes’ dynamic characteristics and vibration features under compound working conditions. The parameters contain payload mass, rope length, lifting acceleration, slewing acceleration, luffing acceleration, and initial angle. For the lifting-luffing coupling motion (LLCM) and lifting-slewing coupling motion (LSCM) of the tower crane, the D’Alembert principle provides a theoretical basis for the derivation of system dynamics equations. The spatial swing angle description of the crane payload includes the time-domain response and frequency-domain response, which uses a dynamic model. The result shows that the mass has little effect on the spatial swing angle. The value of the lifting acceleration is stable at 0.004 m/s2 to 0.01 m/s2. Peak value (PV), root mean square value (RMS), root mean square frequency (RMSF), and frequency standard deviation (RVF) present the best sensitivity to changes in the spatial swing angle response. When PV of angles θ and β increases by tens of thousands of times in the LLCM, PV can reflect the phenomenon of angle divergence. The skewness value (SV) increases by 3422% at the severe swing angle performance in the LSCM. The swing angle regularity with the compound working conditions can provide theoretical guidance for eliminating structural vibration.

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Influence of structural elasticity on transshipment dynamics of dual-trolley overhead crane

Cited by 2 publications

References 37 publications

Spatial transportation of the beam on a bifilar fastening

Spatial transportation of the beam on a bifilar fastening

Swing Characteristics and Vibration Feature of Tower Cranes under Compound Working Condition

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