Zhyhula T.I. Features of dynamics of the load-carrying body of the belt tubular conveyor
- Details
- Parent Category: Geo-Technical Mechanics, 2019
- Category: Geo-Technical Mechanics, 2019, № 147
Geoteh. meh. 2019, 147,191-198
https://doi.org/10.1051/e3sconf/201910900124
FEATURES OF DYNAMICS OF THE LOAD-CARRYING BODY OF THE BELT TUBULAR CONVEYOR
1Zhyhula T.I.
1Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine
UDK 622.647.2:681.5
Language: English
Abstract.
Tubular belt conveyors have been increasingly used in various industries for moving long distances of bulk load. The advantages of this type of conveyors, compared with belt conveyors of traditional design, include the possibility of transporting fine and hazardous materials along complex curvilinear routes without transfer stations, excluding their spillage and dusting. The belt of a tubular conveyor must meet specific requirements – possessing increased elasticity and flexibility to stably maintain the shape of the pipe, to withstand considerable loads at loading and unloading points. In order to choose a tape that meets these requirements, it is necessary to investigate the dynamic processes that occur in a tubular belt with a load during its movement. The tubular belt, when moving along the rollers of conveyor, makes transverse and torsional vibrations. The main danger is torsional vibrations, which are not limited by anything, and are excited due to the torques that occur when the belt is rolled into a pipe, when the conveyor belt is bent, when the support rollers are skewed, and when the belt is unevenly loaded. In the study of the torsion of a tubular conveyor belt on a straight section of the route the maximum twist angle of the tubular conveyor belt under the action of a time constant moment was determined. Also investigated the torsional vibrations of a tubular belt under the action of a suddenly applied moment. Studies of the torsional vibrations of the tubular belt showed that the torque applied suddenly to the cross section of the tape causes the section to rotate by an angle twice as large as in the case of static loading with the same moment. Relations have been obtained to determine the basic parameters of the tubular belt, which will exclude the possibility of a significant rotation of the cross section of the tape and the load spilling. The determining parameter for torsional vibrations of a tubular belt is the torsional rigidity of its section GIp. The shear modulus of the conveyor belt G is small; the polar moment of inertia Ip for a section in the form of a cut ring is also small. Therefore, even small external torque loads can cause significant angular rotations of the section of the tubular belt. When choosing the belt material and the shape of its cross section, it is desirable that the shear modulus of the tape material and the polar moment of inertia of the cross section have as large values as possible.
Keywords: tubular belt conveyors, torsional vibrations of belt, torsional moment, torsional rigidity of the belt section.
REFERENCES
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About the authors
Zhyhyla Tetiana Illivna, Candidate of Technical Sciences (Ph. D), Senior Researcher, Senior Researcher in Department of Geomechanics of Mineral Opencast Mining Technology, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .