METHOD OF DIRECTED INERTIAL VIBROEXCITATION AND UNBALANCE VIBRATION EXCITER OF DIRECTED ACTION FOR ITS IMPLEMENTATION

摘要

FIELD: construction.;SUBSTANCE: method involves obtention of the resulting asymmetric vertical driving force, the components of which are simultaneously generated by means of n elementary vibration exciters of directional action at multiple ratio in the form of natural sequence of numbers from 1 to n of angular rotation velocities of shafts of elementary vibration exciters to the angular velocity of the 1-st shaft at the reduction of static torques of their unbalances with increase of angular velocities. Generating mode of the driving force components is implemented according to the law of its change, defined by relationship which expansion in a Fourier series contains harmonics determining the driving force components and providing the defined coefficient of its asymmetry as the ratio of sizes of maximum modules of pressed force to the minimum lift force at acceptable amount of elementary vibration exciters. Vibration exciter implementing the method has a body in which there are parallel horizontal shafts with unbalances with formation of two vertical rows of n pairs. Shafts in ranks are kinematically related by gear drive of external gearing with gearing ratio specified in the method. Transfer is associated with asynchronous motor with frequency converter, disposed inside the body. Body ends have threaded seats for bolts of removable drive cap. Lift U- shaped frame with gripping element under the hook of elevating crane is connected by means of coaxial hinges with side parts of the body and in one of extreme positions it is fixed with screws. Geometrical axis of hinges extends preferably through the centre of mass C of the rotating fixed part of vibration exciter.;EFFECT: reception of power asymmetry factor of considerable sizes at low number of elementary vibration exciters.;5 cl, 3 dwg