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Vibrations in engineering and technology

space SCIENTIFIC JOURNALS OF VINNITSA NATIONAL AGRARIAN UNIVERSITY

Issue №: 2(97)

Published: 1970.01.01
DOI: 10.37128/2306-8744-2020-2


Description:
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.

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VIBRATION PROCESSES MODELING IN A PERISTALTIC CONCRETE PUMP WITH HYDRAULIC DRIVE

DOI: 10.37128/2306-8744-2020-2-3
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Shatokhin Vladimir – Doctor of Technical Sciences, Professor, head of the Department of theoretical mechanics of Kharkov National University of Civil Engineering and Architecture, (St. Sumskaya, 40, Kharkov, Ukraine, 61002, e-mail: shatokhinvlm@gmail.com; (099) 461-89-67).

Granko Boris – Associate Professor of the Department of theoretical mechanics of Kharkov National University of Civil Engineering and Architecture, (St. Sumskaya, 40, Kharkov, Ukraine, 61002, e-mail: grankoa.b@gmail.com; (095) 948-73-00).

Sobol Vladimir – Ph.D., Associate Professor of the Department of theoretical mechanics of Kharkov National University of Civil Engineering and Architecture, (St. Sumskaya, 40, Kharkov, Ukraine, 61002, e-mail: sobol_vn@ukr.net; (095) 779-09-10).

 

Annotation

The research results of the mathematical model development of dynamic processes in a peristaltic concrete pump with a hydraulic drive are presented. Cast concrete occupies a leading place in modern construction. Peristaltic concrete pumps are good proved in this area. Developing of devices for performance of such activities is an actual task. One of contemporary efficient directions in its solving is an adequate modeling of dynamic processes in mentioned devices. The model is development in the form of a differential equation for rotation angle of the pump rotor; contains general geometric characteristics, rotor’s mass characteristics, dynamic characteristics of the hydraulic motor, parameters of the hose and a structural mix. A method has been developed for the resistance torque forming to rotation of the pump rotor from rollers deforming the hose. A model of the friction forces during the movement of the structural mix is proposed. An expression is obtained for the resistance forces as result of gravity forces action on the mix particles in the outlet part of the hose. An approach is proposed for using catalog data to represent the torque of a hydraulic motor as a function of the angular velocity of its rotor.

Researches of dynamic processes by using the proposed model are carried out. Important technological regularities of the unit functioning have been established, in particular: the mortar speed may have a significant variable component; the mortar speed and the pump performance increase with a decrease in the length of the outlet hose and a decrease in its height, a decrease in the rolling friction coefficients for the rollers, and not using of the side rollers.

The conducted research show that an increase of an altitude leads to a decrease in the average speed of the mixture and the frequency of pulsations. In this case the amplitude of velocity pulsations increases. With an increase in the length of a deferent hose, the amplitude of velocity pulsations changes insignificantly. The rejection of side rollers leads to an increase in the average speed of the mixture motion with minor pulsations. The walls of the hose, however, in this case experience more intense bending stresses, which reduce the product life of the hose.

 

Keywords: vibration process, concrete pump, hydraulic drive, pump rotor, roller.

List of references

1. Beyerle. Hose dosing pump. (1978). Maschinenmarkt, 44, 868-870.

2. Kuskova M.A. (2008). Gidravlicheskie harakteristiki peristalticheskih nasosov [Hydraulic characteristics of peristaltic pumps]. Neftyanoe hozyajstvo, 1, 104-106 [in Russian].

3. Klespitz J., & Kovács L. (2014). Peristaltic pumps – a review on working and control possibilities. IEEE 12th International Symposium on Applied Machine Intelligence and Informatics: Herl’any, Slovakia, 191-194.

4. Kinesis Scientific Exprets, “IPC and IPC-N peristaltic dispensing pump”. URL: https://kinesis.co.uk/knowledgebase/ismatec-ipc-pumps (accessed: 29.01.2020).

5. Pat. UA 112585 C2 Universalnij shlangovij betononasos [Universal hose pump]. Opubl. 26.09.2016. [in Ukrainian].

6. Dhananchezhiyan P., & Hiremath S.S. (2016). Optimization of Multiple Micro Pumps to Maximize the Flow Rate and Minimize the Flow Pulsation. Procedia Technology, 25, 1226-1233.

7. Ryzhakov A., & Nikolenko I., & Dreszer K. (2009). Selektion of discretely adjustable pump parameters for hydraulic drives of mobile eguipment. TEKA Kom. Mot. Energ. Roln.– OL. PAN., 9, 267-276.

8. Henikl J., & Kemmetmüller W., & Bader M., et al. (2015). Modeling, simulation and identification of a mobile concrete pump. Mathematical and Computer Modeling of Dynamical Sistems, 21 (2), 180-201.

9. Bredel hose pumps. URL: https://www.watson-marlow.com/us-en/range/bredel/hose-pumps/ (29.01.2020). 

10. Peristaltic hose pumps for industry. PeriFlo.– 2003. URL: http://www.periflo.com (accessed: 29.01.2020).

11. Lojcyanskij L.G., & Lure A.I. (1982). Kurs teoreticheskoj mehaniki. V 2-h tomah. t. I. Statika i kinematika [The course of theoretical mechanics. In 2 volumes. Volume 1. Statics and kinematics]. Moskow: Nauka [in Russian].

12. Hajkin S.E. (1971) Fizicheskie osnovy mehaniki [Physical fundamentals of mechanics]. Moskow: Nauka [in Russian].

13. Gidromotory MR, tehnicheskie harakteristiki [MR motors, specifications]. URL: http://www.gik43.ru/equipment/motors/gidromotory_mr.– [in Russian].

 

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About journal

Topics of the journal:

The journal "Vibrations   in engineering  and technology" presents materials on the following issues

• Theory of processes and machines
• Mechanical Engineering and materialprocessing
• Processing and food production

Key information:
ISSN (print): 2306-8744
DOI: 10.37128/2306-8744

The certificateof massmediaState registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University

Kind of publication: journal
Type of publication : Scientific
Publication status: Domestic
Year of founding:
Periodicity: 4 times a year
Extent: 18.75 nominal printed pages
ISSN: 2306-8744 (printed version), (online)
Language of edition  : (mixed languages) Ukrainian, English
The scope of the distribution and the category of readers: national, foreign, teaching staff, scientists, businessmen.
Periodical is included in the list of scientific professional editions of Ukraine approved by the Order of Ministry of Education and Sciences of Ukraine from 21.12.2015 No. 1328.
The journal "Vibrations in engineering and technology" is included in the "Catalogue of periodicals of Ukraine".
Journal subscription can be executed in each post office department.
 Subscription Index is  99720.

 

Old version of site: http://vibrojournal.vsau.edu.ua/

History of journal:

In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published  94 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Kaletnik H.M  PhD , professor, academician NAAS is the chief editor of the "Vibrations in engineering  and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.