| 摘要 |
FIELD: construction.SUBSTANCE: invention relates to the field of mining and construction, namely to electromagnetic devices for impact drilling. The electromechanical hammer comprises a stator with an excitation winding, an impact element, a jacket, a reverse system and a retaining magnetic system. The stator comprises an anchor winding, on the upper end of the impact element there is a guide stem entering the stop bushing. The stop is installed on the upper end of the stator. On the stop there is an elastic pad installed. The reverse system is made in the form of a switch of direction of the anchor winding or excitation winding current, The retaining magnetic system comprises two or more retaining magnets or electromagnets installed on the stem as capable of displacement, at the same time there are stops at the lower end of the stem.EFFECT: invention provides for increased functional efficiency of a hammer.1 dwg |
