Patent ID: 6655871
Filing Date: 2003-12-02
Classification: B06B,E02D

Abstract:
A vibration plate for ground compaction comprising:a vibration exciter, which includes at least two mutually parallel eccentric shafts capable of being driven in opposite directions at the same speed of rotation and each carrying at least one centrifugal weight, each centrifugal weight being capable of producing a centrifugal force having a vertical component and a horizontal component, and a phase regulating device which regulates the phase position of the centrifugal weights such that, in each phase position of each centrifugal weight, 1) the vertical components of the centrifugal forces generated by the centrifugal weights in each position of rotation cancel each other out, and 2) the horizontal components of the centrifugal forces generated by the centrifugal weights in each position of rotation act cumulatively in the same direction.