DEVELOPMENT OF THE MODEL OF CONTACT INTERACTION BETWEEN SHOE BRAKE AND DRUM OF MINE HOISTING MACHINE
Keywords:
the physical and mathematical models of beam and lining, mine hoisting machine, shoe brake, the Euler method, Coulomb's lawAbstract
The object of research is the contact interaction of the shoe with the rim of the drum during braking of the mine hoisting machine.
The aim of the work is to develop models of contact interaction between the brake shoe and the drum during braking of the mine hoisting machine, taking into account the flexural rigidity of the beam and the effect of frictional forces on the distribution of the contact pressure to create recommendations for the development of a rational design of the brake beam.
Areas of applicability of hypotheses about an absolutely rigid beam and the absence of influence of frictional forces on the distribution of contact pressure in calculating the brakes of mine hoisting machines are investigated. The physical and mathematical models of the contact interaction of the brake beam with the drum during braking of the mine hoisting machine are developed. Using the exclusion method and the Euler method, the laws of distribution of the contact force, the force in the vertical rack and the braking torque for the braking process are obtained. The developed recommendations on the use of different models of the braking process make it possible to choose a rational model for the calculation of the brake beam by the finite element method.
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