Davydkova N. Substantiation of buffers parameters of shovel loading machine that increase the productivity of its work with damp rock

Object - shovel loading machines. Aim - increase of shovel loading machines' productivity of work with damp rock, inclined to sticking. Researches Methods: regulations and methods of machines dynamics, non-linear theory vibroshockprotection, methods of similarity and dimensions theory, mathematical statistics and dispersion analysis, equation of chemical kinetics and theory adhesion; methods of planning and processing data of multifactoral experiment. A generalized adhesion criterion of rock is grounded as an impulse of force, which is necessary for rock, sticking on shovel, tearing off. A mathematical model of shovel unloading process with account of the adhesion criterion and rock mass change within unloading time is worked up. The design procedure of the buffer with controlled parameters of elastic-damping character for regulation of lasting of shock impulse, formed by buffer, in dependence on rock humidity is worked up. It is handed over in institution Dongiprouglemash for use when new machinesare designing and analysis of improvement ways of existing loading machines is carrying out. Realization of the work recommendations allows to raise productivity of loading machines in considered conditions in 1,35 times. The use sphere (branch) is on plants and in design institutions of mining machine-building of the Ukraine.