| 摘要 |
A damping unit of drilling machine has a ring connected by spine joint to perforator shank end, in its opening a hub is placed with rigidly fixed drill beam. The hub is installed with possibility of longitudinal motion and rotational motion with respect to the ring. In the hub and ring radial coaxial openings are made. In radial openings of the ring thread is provided and cups provided with thread at outer surface are mounted. Rod springy-damping elements are placed in inner cylindrical openings of cups and hub with cylindrical springs pressed up to the hub. In the opening of the hub with possibility of rotation and longitudinal displacement a stepped bushing is installed interacting by its one end with perforator shank end, and at its other end in conical opening a drill beam is fixed. At the outer surface with larger diameter of stepped bushing the cams are provided, axles of those are parallel to the axle of the bushing. In the hub in radial directions coaxially relative to depressions between cams openings with thread at the ends are arranged, where balls are installed interacting with surfaces of the cams, and pressed up by cylindrical springs to cams by means of screws installed in threaded section of radial openings. At the end of the hub a washer is rigidly fixed.
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