title: Substantiation of working parts parameters of the vineyard rotary earth auger for firm soils
abstract: BACKGROUND: The study is focused on improvement of basic machines and development of new machines for digging of holes for young fruit trees in firm soils.&#x0D; AIMS: Expansion of technological abilities and decrease of energy resource intensity of an earth auger with the rotary working body for the sake of replacement of technically obsolete pothole diggers.&#x0D; METHODS: For working bodies parameters substantiation, the vineyard rotary earth auger, which design includes a bulk, a frame, a ro
journal: Tractors and Agricultural Machinery