Frame 2 carries two meshing gears 1 of equal pitch diameter which rotate about axes A and B. Frame 2 is connected to frame 3 by springs 5 and 4. Unbalanced masses m are mounted at equal angles ϕ to axis x-x on gears 1 so that the resultant disturbing force is along axis x-x and equals P=mω²r cos(ϕ), where ω is the angular velocity of gears 1 and r is the distance from axes A and B of rotation to the centres of mass of weights m. When gears 1 rotate, frames 2 and 3 have vibratory motions.
$2535$LrG,VM$