Vehicles for the transportation of straw and hay in loose pressed forms are considered. A scheme a transport vehicle hay, haystack truck, is proposed. The truck consists frame, wheels, trailer device, finger platform, mechanism loweringlifting front part sides, lowering-lifting rear platform. results studies to determine physical mechanical properties necessary rationale parameters presented. d...

‎In this paper‎, ‎we introduce the structure of a groupoid associated to a vector field‎ ‎on a smooth manifold‎. ‎We show that in the case of the $1$-dimensional manifolds‎, ‎our‎ ‎groupoid has a‎ ‎smooth structure such that makes it into a Lie groupoid‎. ‎Using this approach‎, ‎we associated to‎ ‎every vector field an equivalence‎ ‎relation on the Lie algebra of all vector fields on the smooth...