FIELD: mining industry. SUBSTANCE: gear to form boreholes in ground includes hollow cylindrical body, striking mechanism and fixture reducing backward movement of body made in the form of through longitudinal grooves. Grooves are located in side outer surface of body. Cross-section area of each groove grows towards rear butt of body. EFFECT: improved reliability and efficiency. 5 cl, 8 dwg
Title | Year | Author | Number |
---|---|---|---|
DEVICE FOR TRENCHLESS PIPELINE REPLACEMENT | 2002 |
|
RU2242665C2 |
DEVICE FOR TRENCHLESS REPLACEMENT OF PIPELINES | 2001 |
|
RU2221181C2 |
DEVICE FOR TRENCHLESS REPLACEMENT OF PIPELINES | 2001 |
|
RU2221182C2 |
PNEUMATIC DEVICE OF IMPACT ACTION | 2002 |
|
RU2248268C2 |
PNEUMATIC HAMMER WITH THROTTLE TYPE DISTRIBUTION OF AIR | 2004 |
|
RU2256545C1 |
PNEUMATIC HAMMER WITH THROTTLE TYPE AIR DISTRIBUTION | 2004 |
|
RU2256544C1 |
GEAR TO SINK HOLE IN GROUND AND PROCESS OF FORMATION OF EXPANSION IN END OF HOLE WITH ITS USE | 2001 |
|
RU2186928C1 |
PNEUMATIC HAMMER WITH THROTTLE AIR DISTRIBUTION STRUCTURE | 2003 |
|
RU2259478C2 |
PNEUMATIC HAMMER WITH THROTTLE AIR DISTRIBUTION | 1995 |
|
RU2121431C1 |
EQUIPMENT FOR MAKING HOLES IN GROUND | 0 |
|
SU1788157A1 |
Authors
Dates
1995-01-20—Published
1991-07-24—Filed