| 摘要 |
A vibration device for forming concrete and reinforced concrete products of concrete mixtures comprises mobile and stationary frames, a mould with a core and transverse and longitudinal sides, vibration exciters of vertical circular vibrations with unbalances located at the ends of the their horizontal shafts. The vibration exciters with rigidly connected coaxial shafts are similarly located relative to the ends of the mobile frame and mounted in a plane passing through the transverse axis of symmetry of the mobile frame and a center of mass of the vibration device filled with concrete mixture. The pairwise unbalances of one of the vibration exciters are oppositely located relative to position of the unbalances of another vibration exciter. |
