Theoretical Justification of the Effect of Parameters of the Hydraulic Actuator for Ground Removal Machine on its Productivity

Abstract

The article deals with the main factors that influence the productivity of a machine for ground removal under the pipeline. The moving speed and the deepening of working body influence the machine productivity, they in turn depend on the soil properties, the power of actuator working elements, and the feed force and speed. The machine productivity depends on the rotation speed of working elements and the feed force of the stepper hydraulic actuator at the same time. Math expression for calculation of the machine technical productivity is proposed in the article, and its analysis is given on the basis of considering the influence of each factor on the productivity individually. The object of study is a hydraulic actuator of PT-NN P machine. The article concludes that the change of hydraulic power fluid parameters have the greatest impact on the machine productivity, and the parameters of the working elements change slightly in this case. Based on calculations made on the example of PT-NN 820P machine, the diagrams of changing the machine productivity with respect to changing the parameters of the hydraulic actuator are presented.