Rationale for vehicle parameters for the transportation of straw and hay

Abstract

Vehicles for the transportation of straw and hay in loose and pressed forms are considered. A scheme of a transport vehicle for the transportation of straw and hay, a haystack truck, is proposed. The haystack truck consists of a frame, wheels, a trailer device, a finger platform, a mechanism for loweringlifting the front part of the platform, sides, a mechanism for lowering-lifting the rear part of the platform. The results of studies to determine the physical and mechanical properties of straw and hay, necessary to rationale the parameters of the haystack platform, are presented. The dependence of the coefficient of friction of oat straw, barley, winter wheat, millet, buckwheat and alfalfa hay and awnless brome on the fingers of the haystack and loading and unloading surfaces: soil, sod, asphalt, straw, crushed stone on the load and speed is presented. The dependence of the resistance to the introduction of the finger tip of the haystack platform into the straw on the density of the material and the dependence of the load resistance of the vehicle on the angle of inclination of the platform are shown. The results of determining the angles of inclination of the haystack platform during loading, transportation and unloading of straw and hay stacks are presented. Recommendations on the use of a self-loading haystack truck for transporting straw and hay in loose and pressed form are given.