Controllable Crank Mechanism for Exciting Oscillations of Vibratory Equipment

Lanets, Oleksiy; Kachur, Oleksandr; Korendiy, Vitaliy; Lozynskyy, Vasyl

doi:10.1007/978-3-030-77823-1_5

Cited by 12 publications

(11 citation statements)

References 18 publications

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“…Considering numerous scientific publications related with inertial exciters, in particular, those [1]- [11] mentioned above, it can be concluded that the problems of implementing the planetarytype exciters for providing the controllable kinematic and dynamic parameters of the vibratory equipment are not thoroughly investigated. Therefore, the present paper continues the authors' previous investigations presented in [12]- [14] and devoted to improving the controllable vibration exciters able to ensure the efficient operation of various vibratory equipment under the changeable loading conditions. The major scientific novelty of the paper consists in substantiating the parameters of the symmetric planetary-type vibration exciter allowing for generating triangular, rectangular, hexagonal, and other paths of oscillations of the single-mass vibratory system.…”

Section: Introductionsupporting

confidence: 66%

Generating various motion paths of single-mass vibratory system equipped with symmetric planetary-type vibration exciter

Korendiy¹,

Gurey²,

Borovets³

et al. 2022

Vib. proced.

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Vibration exciters are of the most important parts of vibratory technological equipment. Among a great variety of exciters, the inertial ones are currently the most widely used due to their design simplicity, well-studied control techniques, and relatively large efficiency. The present paper deals with a prospective type of inertial exciters based on a planetary mechanism. The main purpose of this research consists in substantiating the possibilities of providing triangular, rectangular, hexagonal, and other paths of oscillations of a single-mass vibratory system driven by a symmetric planetary-type vibration exciter. The mathematical model of the system motion is developed using the Euler-Lagrange equations, and the following numerical modeling is carried out with the help of the Runge-Kutta methods integrated in the Mathematica software. Virtual experiments are conducted in the SolidWorks software using the 3D-model of the vibratory system. The obtained results are presented in the form of time response curves and motion paths of the oscillating body under different operational conditions. The major scientific novelty of the paper consists in substantiating the parameters of the symmetric planetary-type vibration exciter allowing for generating triangular, rectangular, hexagonal oscillations of the single-mass vibratory system. The obtained results can be effectively used while designing new and improving existent vibratory technological equipment, e.g., conveyors, screens, feeders, sieves, etc.

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Section: Introductionsupporting

confidence: 66%

Generating various motion paths of single-mass vibratory system equipped with symmetric planetary-type vibration exciter

Korendiy¹,

Gurey²,

Borovets³

et al. 2022

Vib. proced.

View full text Add to dashboard Cite

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“…Contrary to existing solutions, the authors of this article have previously developed several advanced drives that can be used in various technological equipment, including vibrating screens and conveyors. The first type of such vibrators is of the eccentric type made in the form of a crank mechanism, which allows for changing the eccentricity of the drive, and, accordingly, the amplitude of forced oscillations [27]. Along with the change in eccentricity, the drive is equipped with a frequency control system.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis of an Enhanced Multi-Frequency Inertial Exciter for Industrial Vibrating Machines

et al. 2022

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Multi-frequency vibrators have advantages in bulk materials processing but their design is usually complicated. This article presents the synthesis of design parameters of a two-frequency inertial vibrator according to the specified power characteristics. Based on the developed mathematical model, the parameters of variable periodic force is derived for two angular velocities 157, 314 rad/s and their ratios 0.5 and 2. In the case of the 0.5 ratio, the instant angular velocity of the resulting force vector is 2.0–3.5 times greater than for ratio 2. A dynamical model of vibrating screen with the synthesized inertial drive is considered. It was found that at the ratio of angular velocities 0.5, the second harmonic of acceleration prevails at 50 Hz, while at the ratio of 2, the first harmonic has a greater amplitude at 25 Hz. For the first variant, the power does not depend on the initial angle between unbalances, and at the second variant, it can vary. The angle of rotation of unbalances affects the trajectory of the centre of mass and the phases of the harmonics but does not affect their amplitude. Due to such dynamical features, the two-motor inertial drive allows the vibrating machines to operate at a wider range of frequencies and amplitudes.

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“…The carried out analysis of the scientific publications dedicated to vibratory compacting machines [1]- [6] and self-propelled vibro-impact locomotion systems [7]- [9] has shown that the problems of the simultaneous implementation of the vibro-impact operational conditions and the self-propelling drives in the improved designs of the plate compactors are not thoroughly investigated. Therefore, the previous publications of the authors substantiated the optimal inertia-stiffness parameters of the three-mass vibratory system excited by the crank mechanism [10], considered the improved design of the crank excitation mechanism with controllable geometrical parameters [11], and studied the dynamic behavior of the three-mass vibro-impact system able to slide along a rough horizontal surface [12]. The novelty of the present paper consists in implementing the vibro-impact crank-type excitation mechanism for providing the self-propelling locomotion conditions of the vibratory plate compactor and reducing the extra pushing force that must be applied by the operator for setting the compactor into motion.…”

Section: Introductionmentioning

confidence: 99%

Kinematic and dynamic analysis of three-mass oscillatory system of vibro-impact plate compactor with crank excitation mechanism

Korendiy¹,

Kachur²,

Gursky³

et al. 2022

Vib. proced.

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The paper is aimed at studying the motion conditions of the vibratory compacting machine equipped with the crank excitation mechanism characterized by the changeable geometrical parameters. Unlike numerous scientific publications devoted to similar subject, the novelty of the present research consists in the improved design of the vibro-impact plate compactor and the developed mathematical model describing the motion conditions of the compactor's oscillatory system. It is proposed to use the crank mechanism to excite the oscillations of the impact body acting upon the frame of the compacting plate at a certain angle to the surface being compacted. The main idea of this improvement is to provide the self-propelling locomotion conditions of the compactor and to reduce the pushing force that must be applied by the operator. The research results obtained by means of the numerical modeling in Mathematica software describe the dynamic behavior of the compactor's oscillatory system under different geometrical parameters of the crank excitation mechanism (crank eccentricity, impact gap, etc.). The material of the paper can be of significant practical interest for the designers and engineers dealing with the development of new vibratory compactors and the improvement of compacting technologies.

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Controllable Crank Mechanism for Exciting Oscillations of Vibratory Equipment

Cited by 12 publications

References 18 publications

Generating various motion paths of single-mass vibratory system equipped with symmetric planetary-type vibration exciter

Generating various motion paths of single-mass vibratory system equipped with symmetric planetary-type vibration exciter

Dynamic Analysis of an Enhanced Multi-Frequency Inertial Exciter for Industrial Vibrating Machines

Kinematic and dynamic analysis of three-mass oscillatory system of vibro-impact plate compactor with crank excitation mechanism

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