Dynamic analysis of roller molding installation taking into account dissipative properties balanced drive mechanism

Ловейкін, В. С.; Romasevych, Yu. O.; Loveikin, Yu. V.; Mushtyn, D. I.

doi:10.31548/machenergy2020.01.005

Cited by 2 publications

(4 citation statements)

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“…The solution of the system of equations (11) taking into account expressions (12),…, ( 16) is carried out under the following initial conditions of motion:…”

Section: Research Resultsmentioning

confidence: 99%

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The dynamic analysis of the joint trolley movement and hoisting mechanism in the tower crane

Ловейкін

Romasevych

Shymko

et al. 2022

OMTC

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The task of this paper is to research the simultaneous use of trolley and hoisting mechanism by the tower crane with a beam jib. To conduct research, a dynamic model of joint movement of mechanisms has been developed, which takes into account the main movement of drive mechanisms and oscillating movement of the load on a flexible suspension and links of mechanisms with elastic properties. A mathematical model of the motion of mechanisms is constructed on the basis of a dynamic model with the help of Lagrange equations of the second kind. For a specific jib system of the tower crane, dynamic calculations were performed using the developed mathematical model. According to the results of the calculations, a dynamic analysis of the joint movement of trolley and hoisting mechanism was carried out. The analysis revealed significant dynamic and energy overloads of mechanisms during transients (start, braking) and the presence of high-frequency oscillations in the links with elastic properties and low-frequency oscillations of the load on a flexible suspension. To reduce the overload of crane mechanisms in the areas of transients and eliminate oscillations during steady traffic, it is recommended to optimize traffic modes and develop drive control systems to implement the desired traffic modes.

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“…The solution of the system of equations (11) taking into account expressions (12),…, ( 16) is carried out under the following initial conditions of motion:…”

Section: Research Resultsmentioning

confidence: 99%

“…In the scientific paper [12] the dynamics of the joint movement of both the crane slewing and cart moving mechanisms are investigated. Research objects overloads of exceeding admissible values are revealed as well as a load of spatial fluctuations.…”

Section: Analysis Of Publicationsmentioning

confidence: 99%

The dynamic analysis of the joint trolley movement and hoisting mechanism in the tower crane

Ловейкін

Romasevych

Shymko

et al. 2022

OMTC

Self Cite

View full text Add to dashboard Cite

show abstract

“…where T, P, R -are the kinetic and potential energy of the system, respectively, and the Rayleigh dissipative function; M 1 , M 2 -driving torques of the drive mechanisms for crane slewing and hoisting, summed up according to the rotation part of the crane and the drive drum of the hoisting mechanism (torques M 1 , M 2 are determined from the mechanical characteristics of electric motors according to the Kloss formula (Lovejkin et al, 2020)); М 0 -the moment of resistance forces in the rotary part of the crane, reduced to the rotation axis.…”

Section: Methodsmentioning

confidence: 99%

“…The dynamic loads are estimated according to the design schemes. V. Lovejkin et al (2020) focused on the dynamic analysis of flexible crane systems with programmable constraints. It is established that during the start-up process, oscillations occur that can affect the capacity and reliability of the crane.…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of the joint movement of the hoisting and slewing mechanisms of a boom crane

Loveikin,

Romasevych,

Kadykalo

2023

Tehnìka ta energetika

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To increase the productivity of boom cranes, the operation of individual mechanisms is combined. At the same time, dynamic loads on structural elements, drive mechanisms and loads on a flexible suspension increase, which reduces the reliability of crane operation and increases energy losses. Therefore, the research aims to consider the problem of the dynamics of the joint movement of the mechanisms for load slewing and hoisting of a boom crane. To study the dynamics of the joint movement of the mechanisms, the boom system was represented by a mechanical system with 6DOF, where the basic movement of the mechanisms and the oscillatory movement of the structural links with elastic and dissipative properties, as well as the load on a flexible suspension in the plane of crane slewing and hoisting were considered. For such a mechanical system of a crane, the differential equations of the joint motion of the crane slewing and hoisting mechanisms were developed. The obtained equations are a system of the second order nonlinear differential equations, for solving which a numerical method in the form of a computer program was used. Using the developed program, the dynamics of the joint movement of the mechanisms of a jib crane with specific numerical parameters were calculated. Based on the calculations, a dynamic analysis of the joint movement of the mechanisms for slewing and hoisting the load of a jib crane with a hoisting boom was carried out, which revealed high-frequency vibrations of links with elastic and dissipative properties, as well as low-frequency oscillations of the load on a flexible suspension. The greatest impact of oscillations is observed during the start-up of mechanisms, where high-frequency oscillations dampen during the transient process, and low-frequency oscillations dampen over a fairly significant period. To improve the dynamic properties of the mechanisms for turning and hoisting a load during their joint movement, it is proposed to optimise the mode of movement in the areas of transient processes (start-up, braking). The research results can be used in the development and operation of cranes in mechanical engineering, construction, and other industries

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Dynamic analysis of roller molding installation taking into account dissipative properties balanced drive mechanism

Cited by 2 publications

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The dynamic analysis of the joint trolley movement and hoisting mechanism in the tower crane

The dynamic analysis of the joint trolley movement and hoisting mechanism in the tower crane

Dynamic analysis of the joint movement of the hoisting and slewing mechanisms of a boom crane

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