scholarly journals Determination of Acceleration for Belt Conveyor Speed Control in Transient Operation

2016 ◽  
Vol 8 (3) ◽  
pp. 206-211
Author(s):  
Daijie He ◽  
Yusong Pang ◽  
Gabriel Lodewijks
Keyword(s):  
Speed Control ◽  
Transient Operation ◽  
Belt Conveyor

TRACTION FORCES CREATED BY FLEXIBLE ELEMENTS AND HOISTING-AND-TRASPORT, CONSTRUCTION, ROAD VEHICLES AND EQUIPMENT SYSTEMS BY MEANS OF FRICTION. LECTURE 4

2020 ◽  
pp. 43-49 ◽  
Author(s):  
A. I. Nizhegorodov
Keyword(s):  
Belt Conveyor ◽  
Road Vehicles ◽  
Drive Power ◽  
Cable System ◽  
Euler Formula ◽  
Flexible Links ◽  
Tower Crane ◽  
Movement Mechanism ◽  
Belt Conveyors

The article consistently sets forth the material of the fourth lecture on the course “Theory of hoisting-and-transport, construction, road vehicles and equipment”, which included the following questions: transfer of traction efforts by flexible elements using the example of a thin inextensible thread, derivation of the Euler formula, flexible links and hoisting-and-transport, construction, road vehicle and equipment (HTCRVE) systems; the operation and calculation of the belt brake; the node attaching the rope to the drum and its calculation; the resistance in the cable system of the movement mechanism of the of the tower crane; the determination of the resistances in the cargo truck cable system of the movement mechanism; the transmission of traction by friction in the belt conveyors; the calculation of the drive station drive power of the belt conveyor while transmitting traction by friction.

scholarly journals Dynamic Behaviour of a Conveyor Belt Considering Non-Uniform Bulk Material Distribution for Speed Control

2020 ◽  
Vol 10 (13) ◽  
pp. 4436
Author(s):  
Fei Zeng ◽  
Cheng Yan ◽  
Qing Wu ◽  
Tao Wang
Keyword(s):  
Dynamic Model ◽  
High Precision ◽  
Material Flow ◽  
Laser Scanning ◽  
Bulk Material ◽  
Speed Control ◽  
Conveyor Belt ◽  
Distribution Model ◽  
Material Distribution ◽  
Belt Conveyor

For the conveyor belt, variable material flow influences the energy efficiency of the speed control technology significantly. The fluctuation of material flow on the conveyor belt will lead to the detrimental vibrations on both the belt and the conveyor while the conveyor works at certain speeds. In order to improve the model inaccuracy caused by the uniform bulk material flow assumption in the current conveyor belt model, the paper establishes a high-precision dynamic model that can consider speed control of a conveyor belt under non-uniform bulk material transportation. In this dynamic model, a non-uniform bulk material distribution model is firstly proposed based on laser scanning technology. Then, a high-precision longitudinal dynamic model is proposed to investigate the dynamic behavior of a belt conveyor. Considering the micro-units of actual load on a conveyor belt, it can well describe the transient state of the conveyor belt. These models can be used to determine the optimal speed for safety and energy conservation in operation. Experimental results are used to validate the proposed dynamic model for analyzing belt mechanical behavior under non-uniform bulk material distribution on the belt. The results show that the proposed models can be used for optimizing the operating procedures of belt conveyor systems.

scholarly journals Determination of the loads on the rollers of the tubular belt conveyor

2019 ◽  
Vol 109 ◽  
pp. 00096
Author(s):  
Andrii Smirnov ◽  
Tamara Mishchenko
Keyword(s):  
Service Life ◽  
Ritz Method ◽  
Radius Of Curvature ◽  
Inertial Forces ◽  
Belt Conveyor ◽  
Dynamic Forces ◽  
Plates And Shells ◽  
Bulk Load ◽  
Roller Support

The article presents methods for determining loads on rollers of a six-roll support of a tubular belt conveyor, based on the equilibrium laws of elastic cylindrical plates and shells filled with a freight. In this case, the forces acting on the rollers of the tubular conveyor are the sum of the forces caused by the weight and expansion of the bulk load, the weight and bend of the belt, as well as the inertial forces associated with the curvature and the deflection of the belt under the weight of the bulk load. The dynamic forces acting on the rollers as the belt moves are determined from the equation of the oscillations of a heavy flexible string using the Ritz method. As a result of the research, analytical dependences of the forces acting on the rollers of the six-roller support of the tubular conveyor on the parameters of the conveyor, the belt, the properties of the bulk load and the radius of curvature of the conveyor are obtained, and an assessment of the component these forces is given. The results can be used to determine the parameters of the tubular conveyors rollers and increase the service life of the rollers.

scholarly journals Determination of the limiting angle of inclination of tubular belt conveyor

2020 ◽  
Vol 168 ◽  
pp. 00047
Author(s):  
Ruslan Kiriia ◽  
Andrii Smirnov ◽  
Tetiana Zhyhula ◽  
Todor Zhelyazov
Keyword(s):  
Internal Friction ◽  
Equilibrium State ◽  
Bulk Material ◽  
Conveyor Belt ◽  
Belt Conveyor ◽  
Angle Of Internal Friction ◽  
Angle Of Friction ◽  
Bulk Load ◽  
Belt Conveyors

Currently, the widespread use of tubular belt conveyors is constrained by insufficient justification of the conveyor parameters. In the work, on the basis of the theory of the limiting equilibrium state of bulk load, equations of equilibrium of load on the belt of an inclined tubular conveyor are obtained. It is assumed that the belt was a rigid cylinder filled with bulk material in extreme equilibrium. Based on the obtained equilibrium equation, the analytical dependences of the limiting angle of inclination of the belt conveyor with a tubular belt on the degree of unfilling with the bulk load of the belt and the properties of the bulk load are found. From the analysis of these dependencies it follows that the limiting angle of inclination of the tubular belt conveyor depends on the angle of internal friction of the transported load, the angle of friction of the load on the conveyor belt, the angle of unfilling of the belt with load and does not depend on the radius of the conveyor belt.

Belt Conveyor Electromagnetic Speed Adjustment Technology

2012 ◽  
Vol 201-202 ◽  
pp. 458-461
Author(s):  
Yong Sheng Zhang ◽  
Hong Fei Lin ◽  
Guang Zhen Cheng
Keyword(s):  
Speed Control ◽  
Open Loop ◽  
Step Motor ◽  
Control Technology ◽  
Belt Conveyor ◽  
Phase Step ◽  
Three Phase ◽  
Working Principle ◽  
Adjustment System ◽  
Speed Adjustment

The objective of this paper is to provide an adjustable-speed for belt conveyor, which is used for low power occasions, reducing equipment investment. We adopt three-phase step motor to drive and electromagnetic speed control technology to regulate speed. The paper introduces structure of electromagnetic speed Adjustment belt conveyor, the working principle of open-loop electromagnetic speed Adjustment system and closed-loop electromagnetic speed Adjustment system, connection mode of electromagnetic speed motor. The paper points out the characteristics and applied situation of the electromagnetic speed belt conveyor, compared with frequency speed control equipment with high cost, it is appropriate to choose electromagnetic speed control technology when the power consumption is small.

scholarly journals Determination of the optimal parameters of a tubular belt conveyor depending on such an economical

2018 ◽  
Vol 3 (1 (93)) ◽  
pp. 34-42
Author(s):  
Ivan Nazarenko ◽  
Olexandr Gavryukov ◽  
Andrij Klyon ◽  
Nikolay Ruchynsky
Keyword(s):  
Optimal Parameters ◽  
Belt Conveyor
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