US3702162A - Adjustable support for ring drilling - Google Patents

Adjustable support for ring drilling Download PDF

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Publication number
US3702162A
US3702162A US98380A US3702162DA US3702162A US 3702162 A US3702162 A US 3702162A US 98380 A US98380 A US 98380A US 3702162D A US3702162D A US 3702162DA US 3702162 A US3702162 A US 3702162A
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US
United States
Prior art keywords
boom
holes
ring drilling
ring
tunnel
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 - Lifetime
Application number
US98380A
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English (en)
Inventor
Teuvo Gronfors
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tampella Oy AB
Original Assignee
Tampella Oy AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tampella Oy AB filed Critical Tampella Oy AB
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Publication of US3702162A publication Critical patent/US3702162A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/025—Rock drills, i.e. jumbo drills

Definitions

  • the present invention concerns a ring drilling device adapted for operating in a tunnel and comprising a boom rotating about its longitudinal axis and to which is attached a cradle transverse thereto for the feeding device for the rock drill.
  • a boom head On the rotatable boom, there is mounted a boom head turnable about an axis perpendicular to said boom, the cradle being mounted on this turnable boom head to be rotatable about is longitudinal axis.
  • This invention relates to ring drilling devices.
  • Ring drilling means that form a previously bored tunnel there are drilled, with the aid of extension steels, long radial holes which may have for example a length of up to several tens of meters, for the purpose of blasting a vertical slab off the rock in which the tunnel is dulled.
  • the device according to the invention is exclusively intended for such ring drilling and not for example, for tunnel drilling.
  • Ring drilling is often carried out in such manner that the holes which have a horizontal or downward direction are drilled in one plane, which is vertical.
  • those holes which have an upward direction are also drilled in one plane, but this plane deviates, for instance, 30 degrees from the vertical. This has the effect that the rock is more easily detached when the explosive placed in the holes is detonated.
  • the upwardly directed holes lie in a plane, all holes to not have the same inclination.
  • the inclination of holes closer to the horizontal plane is less than that of holes at a greater distance from the horizontal plane.
  • the inclination of the holes varies from 0 to 30 degrees.
  • An object of the present invention is to provide a ring drilling device by the use of which, when inclined holes are drilled, all holes will automatically lie in one plane.
  • the invention is characterized in that on a rotatable boom there is mounted a boom head turnable about an axis perpendicular to the boom and that a cradle is mounted on this turnable boom head to be turnable about its longitudinal axis.
  • holes which lie, for example, in a plane with 30 degrees inclination, it is merely necessary to turn the boom head so that its axis encloses with the axis of the boom an angle of 30 degrees. All holes will then automatically be in the same plane, having an inclination of 30 degrees, when the cradle is turned step by step about the boom head on transfer from hole to hole.
  • FIG. 1 shows, in perspective and in cross section view, an ore body which is to be blasted.
  • FIG. 2 is an end view of a carriage on which two ring drilling devices according to the invention have been mounted;
  • FIG. 3 shows the same carriage in elevational view from one side
  • FIG. 4 shows, on an enlarged scale and partly in section, a ring drilling device according to the invention
  • FIG. 5 shows the same ring drilling device, viewed from about and partly in section.
  • FIG. 1 demonstrates what is meant by ring drilling.
  • the ring drilling is commenced from the tunnel 2.
  • a ring of radial holes is drilled, hole by hole.
  • the holes 9 directed horizontally or downwardly lie in a plane which is vertical, while the holes 10 inclined above the horizontal plane lie in a plane which has 30 degrees inclination in the direction which has already been blasted.
  • the holes are charged with explosive, which is detonated, whereby a slab-shaped area is detached from the ore body and falls into the drop tunnels 6, and further into the transverse transport tunnels 7, after which the ore particles are transferred into the longitudinal transport tunnels 8 and further to the winding pit.
  • explosive which is detonated, whereby a slab-shaped area is detached from the ore body and falls into the drop tunnels 6, and further into the transverse transport tunnels 7, after which the ore particles are transferred into the longitudinal transport tunnels 8 and further to the winding pit.
  • FIGS. 2 and 3 show a carriage provided with bogie wheels 11 and on which have been mounted two ring drilling devices according to the invention, so that simultaneousely two ring sets of holes, spaced in the longitudinal direction of the tunnel, can be drilled.
  • the carriage can be braced against the sole of the tunnel by means of stays extruding from pressure cylinders 12 and against the roof, by means of a stay extruding from pressure cylinder 13.
  • the ring drilling device on the right in FIG. 3 is more closely illustrated in FIGS. 4 and 5.
  • the device consists of a boom 14, which is carried in journals 15 on the body of the carriage.
  • the boom 14 is rotated by means of a turning cylinder, consisting of a housing 16 integrally connected with the body of the carriage and having in its interior a double-acting piston.
  • the piston rod 17 is designed to be a tooth rack, which engages to toothed end 18 of the boom 14, which end projects into the housing 1 6.
  • the piston moves accordingly, whereby the piston rod 17 formed to act as a tooth rack rotates the boom 14.
  • the piston rod 17 has such length that it is able to rotate the boom 14 through 360 degrees.
  • a boom head turnable about an axis 19 perpendicular to the boom and which is shaped to constitute a bell crank lever 20, 21.
  • This bell crank lever can be turned 45 degrees in one direction or the other by the aid of pressure cylinder 22, which is connected, on one hand, to a lug .23 fixed to the boom 14 and, on the other hand, to the bell crank arm 21.
  • a turning cylinder perpendicular to its axis, this cylinder being similar in principle to the turning cylinder 16 described in the foregoing.
  • the housing 24 of the turning cylinder is journalled in the boom head 20.
  • the piston rod is designedto constitute a tooth rack, which engages the toothed segment 26.
  • the piston moves accordingly, whereby the piston rod 25 shaped to act as a tooth rack, forces the housing 24 to revolve about the boom head 20.
  • the piston rod 25 has such length that the housing 24 may move through 360 degrees about the boom head 20.
  • the cradle 27 which carries the feed device 29 of the rock drill 28, this feed device being movable in its longitudinal direction by means of the displacement cylinder 30.
  • the feed device 29 carries at its end guiding jaws 31 for the drill steel attached to the rock drill 28.
  • the carriage When ring drilling is being carried out, the carriage is so placed in the tunnel that the boom 14 will be parallel to the longitudinal axis of the tunnel, and the carriage is locked in its place with the aid of pressure cylinders 12 and 13. If holes lying in a vertical plane are drilled, the boom head 20 is set with the aid of cylinder 22 to be in-a position in which its axis is horizontal. It is then totally immaterial whether the base on which the carriage rests is level, or whether or not the axis of the boom 14 is horizontal. The holes are now drilled by advancing the turning cylinder 24 step by step about the boom head 20, at transition from hole to hole.
  • the boom head 20 is adjusted with the aid of cylinder 22 to assume a position in which its axis is perpendicular to this inclined plane. Again, the holes are drilled, advancing the turning cylinder 24 step by step about the boom head 20, at transition from hole to hole.
  • the axis of the boom 14 is aligned to be parallel to the axis of this cone, and with the aid of cylinder 22 the turning cylinder 24 is adjusted to be 4 parallel to the side line of the cone.
  • the holes are now drilled, advancing with the aid of turning cylinder 16 the angular position of the boom 14, step by step, at transition from hole to hole.
  • the device turning the boom 14 and the device turning the cradle 27 need not necessarily be turning cylinders, but, for example, electric, hydraulic or pneumatic motors may also be considered.
  • turning cylinders are advantageous in the respect that by their aid the boom 14 and on the other hand the cradle 27 can be locked exactly and, with permanent accuracy, in the right angular positions.
  • a ring drilling device adapted for operating in a tunnel, comprising a rock drill, a boom having and rotatable about a longitudinal axis, a cradle transverse to said boom, a feed device in said cradle for the rock drill, a boom head mounted and turnable on the rotatable boom about an axis perpendicular to said boom, the cradle being mounted on said turnable boom head to be rotatable about its longitudinal axis, and turning cylinders, said boom being arranged to be rotatable about its longitudinal axis with the aid of one said turning cylinders, the cradle being arranged to be turnable about the longitudinal axis of the boom head with the aid of one of said turning cylinders.
  • a ring drilling device wherein the turnable boom head includes a bell crank lever including an arm comprising a pressure cylinder between said arm and the boom for turning the boom head.
  • a ring drilling device wherein the first turning cylinder is a cylinder which is adapted to turn the boom through at least 360 degrees, and the second turning cylinder is a cylinder which is adapted to turn the cradle through at least 360 degrees.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US98380A 1970-10-19 1970-12-15 Adjustable support for ring drilling Expired - Lifetime US3702162A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI702811A FI45374C (fi) 1970-10-19 1970-10-19 Viuhkaporauslaite.

Publications (1)

Publication Number Publication Date
US3702162A true US3702162A (en) 1972-11-07

Family

ID=8507615

Family Applications (1)

Application Number Title Priority Date Filing Date
US98380A Expired - Lifetime US3702162A (en) 1970-10-19 1970-12-15 Adjustable support for ring drilling

Country Status (12)

Country Link
US (1) US3702162A (de)
JP (1) JPS501441B1 (de)
AT (1) AT314446B (de)
CA (1) CA942287A (de)
DE (1) DE2059535C3 (de)
ES (1) ES386427A1 (de)
FI (1) FI45374C (de)
FR (1) FR2109525A5 (de)
GB (1) GB1329286A (de)
NO (1) NO127550B (de)
SE (1) SE376784B (de)
ZA (1) ZA708388B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819144A (en) * 1971-10-14 1974-06-25 Ardal Og Sunndal Verk Crust breaking machine
US4346766A (en) * 1979-04-04 1982-08-31 Salzgitter Maschinen Und Anlagen Aktiengesellschaft Drill cradle with elongated slide track
ITPR20110008A1 (it) * 2011-01-28 2012-07-29 Mc Drill Technology S P A Posizionatore da galleria

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2608278C3 (de) * 1976-02-28 1981-08-06 Mannesmann AG, 4000 Düsseldorf Bohrwagen für den Untertagebergbau
WO1989002513A1 (en) * 1987-09-08 1989-03-23 Bogdany Bela Drilling and winning installation for mining
JP4887396B2 (ja) * 2009-05-21 2012-02-29 成和リニューアルワークス株式会社 削孔装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3819144A (en) * 1971-10-14 1974-06-25 Ardal Og Sunndal Verk Crust breaking machine
US4346766A (en) * 1979-04-04 1982-08-31 Salzgitter Maschinen Und Anlagen Aktiengesellschaft Drill cradle with elongated slide track
ITPR20110008A1 (it) * 2011-01-28 2012-07-29 Mc Drill Technology S P A Posizionatore da galleria

Also Published As

Publication number Publication date
DE2059535A1 (de) 1972-05-10
ES386427A1 (es) 1973-03-16
CA942287A (en) 1974-02-19
NO127550B (de) 1973-07-09
FI45374C (fi) 1972-05-10
GB1329286A (en) 1973-09-05
FR2109525A5 (de) 1972-05-26
ZA708388B (en) 1971-09-29
DE2059535B2 (de) 1978-06-08
FI45374B (de) 1972-01-31
SE376784B (sv) 1975-06-09
AT314446B (de) 1974-04-10
DE2059535C3 (de) 1979-02-01
JPS501441B1 (de) 1975-01-18

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