Determination and analysis of change power character and power parameters of earthmoving-transport working process machines of cyclic action

L. A. Khmara, A. I. Holubchenko

Abstract


Raising of problem. Efficiency of implementation working process an earthmoving-transport machine on digging of soil depends on complete realization of power equipment and hauling properties working equipment during implementation this operation. Most effective will be the mode of digging when from his beginning to the final stage a power equipment will realize nominal power, and working equipment maximal KKD at that skidding of mover does not exceed the defined possible value. However, for the traditional constructions of earthmoving-transport machines cyclic action, for such, as a drag shovel, bulldozer, realizing these terms is heavy. The feature of process digging consists in the increase of resistance to digging soil from the ego of the initial stage to eventual when hauling possibilities of machine will be maximally realized. Therefore the calculation of power equipment takes into account the power indexes of machine on the final stage of digging. Thus the unstationarity of working process results in the under exploitation of power equipment machine and hereupon appearance her bits and pieces. The size of bits and pieces power depends on the stage digging of soil, his physical and mechanical properties, terms cooperation of working equipment with the surface of motion. One of methods realization surplus power, this use it for the drive intensifiers working process of earthmoving-transport machines. Therefore for the effective choice parameters of intensifier, his office hours it is necessary to know the size of bits and pieces of power and character her change during digging of soil. The purpose of the article. Development of methodology determination remaining power equipment an earthmoving-transport machine on the example self-propelled drags hovel, character her change at digging of soil taking into account physical and mechanical properties of soil and terms cooperation working equipment with the surface of motion. Conclusion. Methodology of determination current power and power parameters process digging of soil depending on the geometrical parameters scoop drag shovel, terms his cooperating with soil, physical and mechanical properties of soil and features working equipment a self-propelled drags hovel is offered. A size and character of change remaining power equipment are set at digging of soil, that it is expedient to use for intensification of working process drags hovel.


Keywords


drag shovel; digging of soil; current power and power parameters; remaining power; hauling properties of working equipment; intensification of working process

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