| 摘要 |
FIELD: mining.SUBSTANCE: hammer includes a housing, a piston - head, chambers of direct and reverse stroke, an air distributing system, a spline coupling and an adapter of a drill string, which are attached to the housing by means of threads. Hammer has annular adjustment elements that are arranged respectively between the housing and the spline coupling and between the housing and the adapter of the drill string. Each of the annular adjustment elements is made in the form of segments enveloped with a cover. The cover is provided with guide projections arranged between the segments. Space between the segments, the cover, the housing and the spline coupling and the drill string adapter respectively is filled with a lubricant.EFFECT: reduction of time for auxiliary operations.2 cl, 3 dwg |
