| 摘要 |
The invention can be used in constructions of vibro-drivers for deepening (and extraction) of building articles (tongues, piles, tubes, shells, etc.) to earth. A vibration exciter has fixed electromagnetic (1) and movable magnetic (2) systems that are mounted in the body (8) with possibility of swinging one with respect to another, and elastic elements of direct (11) and reverse (12) amplitude of vibrations placed out of the zone of effect of magnetic systems. Novelty is in that elastic elements of the direct (11) and reverse (12) vibration amplitude are installed on common rods (13) and separated one from another with fixed section (14) of the body (8). The rods (13) at one side are connected to each other with a ring (15) that is rigidly fixed on movable magnetic system (2) and has a platform (17) for loading elements (18), and opposite ends of the rods (13) are connected with single ring (20) that surrounds the body (8) and have devices for pressing (21) elastic elements (12) arranged as a“screw-nut”. The invention provides simplification of the construction, decrease of overall dimensions, and makes it possible to change frequency and amplitude of resonance vibrations through change of movable section weight. |
