FIELD: drills. SUBSTANCE: unit for transmission of working loads to drilling auger has rotary head chuck with whose catching part has teeth and supporting surfaces for interaction with mating teeth made on pipe of drilling auger. Auger pipe has supporting surfaces square to its longitudinal axis, and auger pipe teeth have recesses and are located between said supporting surfaces. EFFECT: higher efficiency. 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WORKLOAD TRANSFER ASSEMBLY FOR AUGER DRILLING COLUMN | 0 |
|
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| 0 |
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SU1155707A1 |
