Vibration controller designed in particular for vibrating, tamping and compacting equipment
AssigneeSociete Materials Vincent Vaillant MVV S.A.
InventorMonsiour J. C. Pelletier
Life of this patent
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Abstract
A vibration controller has a vibratory mechanism with a pulley assembly with four pulleys coupled in pairs on two shafts linked by two belts. The pulley assembly is mounted under a reception table or tables for products to be vibrated and compacted. The pulleys receive offcenter weights for forming an unbalance. The weights are placed only on a aliametric portion of the pulleys. The pulleys are mounted in pairs on the two shafts associated with an phase-shifting device that rotates certain pulleys with respect to each other to vary the relative orientation of the corresponding weights. According to this orientation one can obtain maximum, partial or minimum vibration, one of the shafts being driven by a motor unit.
Claims21
Device controlling vibrations imparted to machines of the type comprising a vibration generator equipped with pulleys having flyweights and rotated by drive shafts wherein the vibration generator has a first, second, third and fourth pulley, the first and second pulley being linked by a first belt, the third and fourth pulley being linked by a second belt, the pulleys being operable to accept flyweights fitted only to a aliametric part thereof, the first and third pulley being mounted on a first shaft, the second and fourth pulley being mounted on a second shaft, the first and second shafts being connected to a phase-shift device designed to cause certain of the pulleys to rotate, thus changing an angular position of the corresponding flyweights, and generating, depending upon said position of the flyweights selected, maximum, partial and minimum vibration with no unwanted torque, one of the shafts being driven by a motor running continuously regardless of the operating phase, and wherein the flyweights can be in static and dynamic equilibrium when the position for minimum vibration is selected;
- and wherein each of the first and second shafts has both a keyed pulley and art idle pulley, thus forming an alternating and opposed system of pulleys with each pair of pulleys linked by a belt driving a keyed pulley on one shaft and an idle pulley on one shaft.
Dependencies are inferred from the claim text.