Substantiation of working parts parameters of the vineyard rotary earth auger for firm soils

BACKGROUND: The study is focused on improvement of basic machines and development new for digging holes young fruit trees in firm soils.
 AIMS: Expansion technological abilities decrease energy resource intensity an earth auger with the rotary working body sake replacement technically obsolete pothole diggers.
 METHODS: For bodies parameters substantiation, vineyard auger, which design includes a bulk, frame, rod beam, forming hinged forebody mechanism, whereas bulk frame are linked to attachment system power source, investigated.
 RESULTS: most widespread actuators universal hole diggers analyzed. Principles shock-and-vibrational drill tool make it possible obtain significant performance. layout theoretical substantiation under vibration effect proposed. amplitude bar reciprocating motion along splines not less than washer teeth height order transform rotation into vibrational operation mode auger. simulation model, considering physical mechanical properties soils, geometry number drive washers It found that diameter increases from 0.15 0.35 m vibratory washers, ensuring demanded frequency soil layer breaking-off by shares, increase 7 16 pieces accordance technical considered soils. proposed reducing gear box fixed offset tractor longitudinal axis corresponding angle = 3320 ensured hydraulic cylinder, beam length L1 800 mm, pivot fixing L2 1300 value up 1500 mm.
 CONCLUSIONS: obtained results at soils case planting perennials given. targeted expansion abilities, digging.