Vibration exciter for generating a directed excitation vibration

Abstract

The present invention relates to a vibration exciter for generating a directed excitation vibration, especially for installation in a vibration tamper, and a machine with such a vibration exciter, comprising at least two parallel extending unbalance shafts which are rotatable against one another, on which at least one respective fixed unbalance mass and at least one respective movable unbalance mass are arranged, with the positions of the movable unbalance masses on the unbalance shafts being variable by way of an adjusting device for adjusting the amplitude of the exciter vibration, and with the adjusting device comprising a central adjusting element for amplitude adjustment which acts on the movable unbalance masses of the two unbalance shafts, which central adjusting element is arranged coaxially to a rotational axis (AS) about which the vibration exciter is rotatable for the purpose of vector adjustment of the excitation vibration.

Dependencies are inferred from the claim text.