MECCANISMO PER GENERARE VIBRAZIONI PER UNA MACCHINA DI COSTIPAMENTO DEL TERRENO

摘要

An improved mechanism for generating vibrations in the horizontal plane for a ground compacting machine is disclosed. At least a rotary shaft with an eccentric mass mounted for generating required vibrations is rotatably supported within the rolling wheel. The rotary shaft adapted to be rotated by a hydraulic motor assumes the position where its center line of rotation is located on a linear line radially extending from the center line of rotation of the rolling wheel. Rotation of the hydraulic motor is usually transmitted to the rotary shaft for the eccentric mass via bevel gears. Typically, an opposing pair of rotary shafts are disposed opposite to one another relative to the center line of rotation of the rolling wheel. Three or more rotary shafts may be disposed in such a manner that their eccentric masses are distributed so as to assure good weight balance. The center line of rotation of the rotary shaft may be located in parallel with a linear line radially extending from the center line of rotation of the rolling wheel. The rotary shafts may assume the position where their center lines are located in the spaced relation in the axial direction of the center line of rotation of the rolling wheel. The rolling wheel made of steel plate is preferably covered with a layer of rubber coating.