GB1344821A - Drilling or cutting of earth strata - Google Patents
Drilling or cutting of earth strataInfo
- Publication number
- GB1344821A GB1344821A GB6323869A GB1344821DA GB1344821A GB 1344821 A GB1344821 A GB 1344821A GB 6323869 A GB6323869 A GB 6323869A GB 1344821D A GB1344821D A GB 1344821DA GB 1344821 A GB1344821 A GB 1344821A
- Authority
- GB
- United Kingdom
- Prior art keywords
- unit
- drill rod
- boom
- section
- bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005553 drilling Methods 0.000 title abstract 2
- 230000010355 oscillation Effects 0.000 abstract 4
- 238000009527 percussion Methods 0.000 abstract 4
- 239000011435 rock Substances 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/084—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with flexible drawing means, e.g. cables
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
1344821 Rock drills MINING DEVELOPMENTS AG 21 Dec 1970 [30 Dec 1969 (2) 8 Jan 1970 2 May 1970] 63238/69 63239/69 913/70 and 21221/70 Heading B3C [Also in Divisions B4 and E1] Rock drilling apparatus comprises a boom 22 pivotally mounted on a carriage 20 which may be self propelled (as shown), a percussion unit 24 for applying axial blows to a drill rod 25 and movable along the boom by a double acting hydraulic ram (44) (Fig. 6, not shown) via ropes and pulleys, and a unit 23, fixed on the boom for applying oscillations to the drill rod. A main drill bit 56 elongate in section perpendicular to the rod axis and provided with tungsten carbide inserts is carried by the rod, and a pilot bit 59, substantially circular in section may also be provided. The pilot bit may be oscillated with the main bit or may be independently rotated whilst the main bit is oscillated. The drill rod is non-circular, e.g. hexagonal, in cross-section and passes through a bore of similarly cross-section in a rotor in the unit 23. The percussion unit 24 or boom may be provided with rollers to facilitate movement of the unit. A motor 35 for driving a hammer of unit 24, e.g. via a cam and spring mechanism, the double acting ram (44), @ram (53) (Fig. 11, not shown) for pivoting the boom, and the unit 23 are included in an hydraulic control circuit. The circuit including means for varying the speed of advance of the drill rod, for varying the frequency of percussion blows, and for varying the speed of oscillation of the rotor of unit 23. The drill rod is hollow and the drills bits are appropriately apertured to permit flow of clearing air. The apparatus may be used to produce holes of substantially rectangular cross-section by limiting the oscillation of the drill bit 56 to 22¢ degrees and may also be used to produce a cylindrical undercut 63 (Fig. 5) by stopping axial impacts on the drill rod and the forward motion of the percussion unit 24 and the drill rod and by increasing the oscillation sufficiently to produce the cylindrical undercut.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6323869 | 1969-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1344821A true GB1344821A (en) | 1974-01-23 |
Family
ID=10488890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6323869A Expired GB1344821A (en) | 1969-12-30 | 1969-12-30 | Drilling or cutting of earth strata |
Country Status (4)
| Country | Link |
|---|---|
| GB (1) | GB1344821A (en) |
| SU (1) | SU419050A3 (en) |
| ZA (1) | ZA708724B (en) |
| ZM (1) | ZM14970A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2172225A (en) * | 1985-03-13 | 1986-09-17 | Dobson Park Ind | Drilling long holes in confined spaces |
| US10227834B2 (en) | 2014-12-05 | 2019-03-12 | Tracto-Technik Gmbh & Co. Kg | Drive of an earth drilling device, earth drilling device, and a method for driving an earth drilling device |
-
1969
- 1969-12-30 GB GB6323869A patent/GB1344821A/en not_active Expired
-
1970
- 1970-12-29 ZA ZA708724A patent/ZA708724B/en unknown
- 1970-12-30 SU SU1604853A patent/SU419050A3/ru active
- 1970-12-30 ZM ZM149/70A patent/ZM14970A1/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2172225A (en) * | 1985-03-13 | 1986-09-17 | Dobson Park Ind | Drilling long holes in confined spaces |
| GB2172225B (en) * | 1985-03-13 | 1989-09-06 | Dobson Park Ind | Drilling apparatus |
| US10227834B2 (en) | 2014-12-05 | 2019-03-12 | Tracto-Technik Gmbh & Co. Kg | Drive of an earth drilling device, earth drilling device, and a method for driving an earth drilling device |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA708724B (en) | 1971-10-27 |
| SU419050A3 (en) | 1974-03-05 |
| ZM14970A1 (en) | 1971-08-23 |
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| Jakel | Collection and analysis of blasting technical data of the Ruhr coal mining industry.(In German). 12F: GLUKAUF, V112, N14, JUL. 1976, P796–P802 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |