International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

This article presents the design of a device with a flexible screw conveyor that will improve the functional and operational characteristics of screw conveyors during the disposal of excavated contaminated soil. To select optimal design parameters for the sections of the screw working element, computer modeling was performed to assess the impact of force loads on corresponding deformations depending on operating conditions.

The article presents the design of a finger safety clutch with axial withdrawal of a jammed screw to remove it from the overload zone. The theoretical dependences of determining the change in torque during the operation of the finger safety clutch on the angle of relative rotation of the half couplings and the design and technological parameters of the engagement elements are presented. On the basis of force and kinetostatic analysis of the coupling, the nature and magnitude of the change in their torque at all stages of relative rotation of the coupling halves were determined. The developed and manufactured prototypes of the finger safety coupling made it possible to conduct a set of experimental studies. For the safety clutch of a screw conveyor, based on the analysis of theoretical and experimental test data, the adequacy of theoretical calculations and actual values of torques during the mechanism operation was compared.

The article presents the design of a flexible screw sectional working body that will improve the functional and operational characteristics of screw conveyors during the utilization of the removed contaminated soil layer. A mathematical model of the dynamic system of a flexible screw conveyor was created, and dynamic starting torques were calculated at the rated load of the loaded screw and when the system was braked. The analysis of the results shows that with significant damping coefficients, the startup transient process is smooth and the load reaches its nominal value without fluctuations in torque and speed.

The article presents the design of a flexible screw sectional working body that will improve the functional and operational characteristics of screw conveyors during the utilization of the removed contaminated soil layer. A mathematical model of the dynamic system of a flexible screw conveyor was created, and dynamic starting torques were calculated at the rated load of the loaded screw and when the system was braked. The analysis of the results shows that with significant damping coefficients, the startup transient process is smooth and the load reaches its nominal value without fluctuations in torque and speed.