FIELD: drilling rigs characterized by means for land transport.
SUBSTANCE: drilling tool is fed by means of drive installed on drilling mast for drilling tool feeding and with the use of rotary clamping means provided with clamping chuck, which may be rotated by means of at least one working cylinder. To intensify twisting moment at least two rotary clamping devices are provided. The rotary clamping devices may be installed in drilling tool clamping position.
EFFECT: reduced power consumption necessary for power-intensive drilling operations fulfillment, increased efficiency of drilling tool driving in ground.
13 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| ROTARY DRILLING BIT BEARING ASSEMBLY | 0 |
|
SU791886A1 |
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|
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|
SU912940A1 |
| DRILLING MACHINE AND IN EARTH BUILDING-UP METHOD OF CAST-IN-PLASE DISPLACEMENT PILES | 2007 |
|
RU2360070C2 |
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|
RU2352721C2 |
| METHOD OF DRILLING WITH CASING PIPES, DRILLING RIG AND REDUCING PIECE | 2005 |
|
RU2351735C1 |
