| 摘要 |
<p>Disclosed are an impact head-centralizing method by means of heightening and/or widening back recess and a device for centralizing impact head by means of heightening and/or widening back recess that implements said method in the fields of mining or engineering machinery. The device comprises a dual back recess guidance mechanism (37), an impact support mechanism (12), a drive mechanism (9), impact heads (3), etc. The dual back recess guidance mechanism (37) comprises a dual rolling friction back recess structure (10) and an impact guidance element (7), etc. The dual rolling friction back recess structure (10) comprises an upper rolling friction grove (1), and a lower rolling friction groove (11). A power impact element (8) drives the impact guidance element (7), etc. to reciprocate. The impact guidance element (7) is disposed within the space of external guidance rollers (28, 29). The impact guidance element (7) increases the centralizing height of the impact head (3), and the rolling friction back recess structure (10) supports the reciprocating movement direction of the impact guidance element (7).</p> |
