Machinery & Energetics

For the purpose of increase in reliability and durability of roller forming installation with the balanced driving mechanism loadings in elements of her design and the drive are calculated, dependences for definition of efforts in the connecting rods necessary for reduction in back and forth motion of forming carts, and normal reactions of guides of the movement of forming carts to the directing rollers depending on an angle of rotation of cranks are received. For a research of loadings the two-mass dynamic model of roller forming installation in which power and power characteristics of the driving engine and each of forming carts, rigidity of the driving mechanism and its dissipation are considered is used. Function of change of necessary torque for ensuring process of consolidation of products of construction mixes taking into account dissipation of the driving mechanism is defined. Rated settlement power on which the electric motor is chosen is determined by average value of the moment of forces of resistance for a cycle of turn of cranks, connecting couplings and a reducer are picked up. Using Lagrange's equation of the second sort, for the roller forming installation with the balanced drive presented by two-mass dynamic model the differential equations of the movement are worked out. As a result of a numerical experiment for roller forming installation with the balanced driving mechanism the value of the rigidity of the driving mechanism given to an axis of rotation of cranks at which the minimum loadings in couplings of the driving mechanism are observed is defined. The dependence of the moment is installed in the drive coupling from dissipation coefficient size. The recommended dissipation coefficient size for roller forming installation with the balanced driving mechanism is determined.

roller forming installation, driving mechanism, effort, moment, rigidity, dissipation