US3476193A - Drill boom with parallel motion linkage means - Google Patents

Drill boom with parallel motion linkage means Download PDF

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Publication number
US3476193A
US3476193A US738240A US3476193DA US3476193A US 3476193 A US3476193 A US 3476193A US 738240 A US738240 A US 738240A US 3476193D A US3476193D A US 3476193DA US 3476193 A US3476193 A US 3476193A
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US
United States
Prior art keywords
drill boom
boom
drill
link
supporting
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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
US738240A
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English (en)
Inventor
Axel Stromnes
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Atlas Copco AB
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Atlas Copco AB
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Publication date
Application filed by Atlas Copco AB filed Critical Atlas Copco AB
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Publication of US3476193A publication Critical patent/US3476193A/en
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    • 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
    • E21B15/00—Supports for the drilling machine, e.g. derricks or masts
    • E21B15/006—Means for anchoring the drilling machine to the ground

Definitions

  • the invention relates to drill booms for rock drilling apparatus and more particularly to a drill boom arrangement with parallel motion linkage means for positioning a rock drilling apparatus to a plurality of drilling positions all substantially parallel to one another. It is wellknown in the art in question to dispose the parallel motion linkage along the entire length of the drill boom and to join it pivotally to the drilling apparatus near the pivot point thereof on the drill boom.
  • the supporting points of the feed shell are usually disposed close to each other which makes it difficult to attain sufficient stability of the feed shell under working thrust and torque in the various drilling positions thereof.
  • An alternative scissors-like supporting of the feed shell by the aid of pivotally crossed adjusting frames has therefore also been used for providing the parallel positioning.
  • the drilling apparatus is more rigidly supported but the space in front and below the feed shell is blocked by one of the scissors frames and the forward journal bearing thereof whereby the accessibility to the working face is reduced.
  • a drill boom arrangement with parallel motion linkage means for positioning a rock drilling apparatus to a plurality of drilling positions all substantially parallel to one another said drill boom arrangement comprising a rock drilling apparatus, a boom support, a drill boom swingably mounted at the rear end thereof on said boom support, first pivot means on the forward end of said drill boom and connected for supporting said rock drilling apparatus pivotally thereon, a supporting link piovtaly journalled on the intermediate portion of said drill boom and extending rearwardly with respect to said drill boom, second pivot means on the rearward end of said supporting link and connected for supporting said rock drilling apparatus pivotally thereon, means on one of said pivot means providing longitudinal movability of said rock drilling apparatus relative to said ice one pivot means during pivotal movement of said drill boom and supporting link, and a pilot link pivotally journalled on said supporting link and on said boom support for providing substantially parallel displacement of said rock drilling apparatus through the intermediary of said supporting link when said drill boom is pivoted relative to said boom support.
  • FIG. 1 shows a side view of a drill boom arrangement according to the invention.
  • FIG. 2 is a view on the line 2-2 in FIG. 1.
  • the FIGURES 3a- 30 are views on the respective lines 3a3a, 3b--3b, and 3c3c in FIG. 1.
  • FIG. 4 shows a view partly in section on the line 44 in FIG. 1 through a mounting and turning means for the drill boom in FIG. 1.
  • FIG. 5 is a detailed section on the line 55 in FIG. 3a.
  • FIGS. 68 are cross sections on the respective lines 66, 77, 88 in FIG. 1.
  • FIG. 9, finally, is a detailed section on the line 9-9 in FIG. 1.
  • a drill boom 15 is journalled pivotally about an axle 16 which is carried by a boom support 17.
  • the drill boom 15 carries at its underside a pair of lugs 18 and a pivot 19.
  • the boom support 17 carries an axle 20 parallel with the axle 16.
  • a hydraulic cylinder and piston means or ram 21 Between the axle 20' and the pivot 19 is inserted a hydraulic cylinder and piston means or ram 21. By extension or contraction of the hydraulic ram 21 the drill boom 15 may be elevated or lowered with respect to the boom support 17.
  • the boom support 17 is screwed to an axle 23 disposed in the plane of swing of the drill boom 15 which axle 23 is rotatably journalled in a mounting also including a turning means 24, FIGS. 1, 4 intended for angular adjustment of the axle 23 within a wide angle for example of 360.
  • the axle 23 is provided with a gear wheel 25 which is in engagement with two racks 27, 28 guided for reciprocation in cylinders 29, 30.
  • the cylinders 29, 30 are supplied with pressure fluid at the opposite cylinder ends thereof via a control valve, not shown, for actuation of pistons 31 arranged at the opposite ends of the racks 27, 28.
  • pressure fluid is supplied simultaneously to the lower end of the cylinder 29 and the upper end of the cylinder 30 while the opposite ends of these cylinders are relieved from pressure.
  • pressure fluid supply takes place in the opposite order to the lower end of the cylinder 30 and the upper end of the cylinder 29 while simultaneously therewith the opposite cylinder ends are relieved.
  • the drill boom 15 carries a first pivot means or a pivot 33 at the outer end thereof on which a bracket 34 is pivotally journalled.
  • the bracket 34 includes two pairs of coaxial bearing sleeves 35 parallel to one another in which is slidably journalled a pair of guiding elements provided by two spaced guiding tubes 36 interconnected to form an elongated guiding frame.
  • To the rear end of the guiding tubes 36 is affixed second pivot means or a pair of pivots 37 on which a supporting link 38 made as an elongated link frame is pivotally affixed.
  • the supporting link 38 is double armed crossing the drill boom 15 and is pivotally journalled at the intermediate portion of the drill boom 15 about side pivots 39.
  • the length of the supporting link 38 between the side pivots 39 and the pivots 37 is chosen equal to the distance between the side pivots 39 and the pivot 33 of the drill boom 15.
  • the arm 40 of the supporting link 38 turned away from the pivot 37 is short and is pivotally journalled by means of pivots 41 to a pilot link 42.
  • the pilot 42 is fork shaped and the forked end thereof straddles the hydraulic ram 21 and is pivotally journalled about the axle 20 of the boom support 17.
  • the guiding tubes 36 are part of a drilling apparatus carried by the drill boom 15.
  • a rear bracket 43 and a forward bracket 44 slidably guided a feed shell 45 which in conventional manner carries a rock drill 46 thereon.
  • the rock drill 46 delivers blows to a drill steel 47 and is reciprocable on a slide along the feed shell 45 under the action of a feed motor, not shown.
  • the rear bracket 43 of the feed shell 45 is affixed to a hydraulic cylinder and piston means or ram 48 FIGS. 30, and 9, the piston rod 49 of which is affixed to the rear end of the guide element 36 centrally between the pivots 37.
  • the piston rod 49 consists of a tube which contains an inner tube 50 through which pressure fluid can be supplied to the working chamber in the hydraulic cylinder 48 turned away from the piston rod therein.
  • the space around the inner tube 50 in the piston rod 49 can be supplied with pressure fluid through a lateral passage 52 and communicates via laterally directed bores 53, FIG. 9, with the working chamber around the piston rod 49 in the hydraulic cylinder 48.
  • the feed shell 45 can be displaced in forward direction along the guiding tubes 36 to rest against the rock face to be drilled. Retraction of the feed shell 45 is performed by supply and drawing otf of pressure fluid in the opposite order.
  • the feed shell 45 normally has to be placed horizontally in the various drilling positions thereof if the inclined positions for drilling roof and bottom holes are disregarded.
  • the pilot link 42 and the supporting link 38 and the arm 40 thereof have been given such lengths that during elevation and lowering of the drill boom by means of the hydraulic ram 21 the guiding tubes 36 always will remain in substantially horizontal position parallel to one another and to the axle 23.
  • the links 38, 42 are thus calculated to form parallel motion linkage means for the feed shell 45 carried on the guiding tubes 36.
  • the feed hell 45 must take a suitable angle with respect to the drilling positions parallel to one another and to the axle 23.
  • This angular setting is performed by respective extension or contraction of the fork shaped pilot link 42, the shank portion of which incorporates two coaxial hydraulic rams with the cylinders 54, 55 thereof connected coaxially to one another.
  • the piston rod 56 of the hydraulic cylinder 55 is connected to axle via the forked portion of the pilot link 42.
  • the piston rod 57 of the hydraulic cylinder 54 is fixed to the pivots 41.
  • the hydraulic cylinders 54, 55 are at the ends thereof provided with passages for the supply or drawing off of pressure fluid and the pilot link 42 has between the axle 20 and the pivots 41 the length necessary for parallel displacement of the feed shell when the hydraulic cylinder 54 is fully contracted by its piston rod 57 taking its innermost position therein simultaneously with the piston rod 56 taking its maximally extended position from the hydraulic cylinder 55.
  • This adjustment of the guide linkage 42 is shown in FIG. 30. If in this position the piston rod 57 is extended maximally, the pilot link 42 will be extended whereby the supporting link 38 is turned in the direction of the boom support 17 and the pivots 37 of the guiding and tubes 36 are lowered. The rear end of the feed shell 45 is thus lowered to such an extent that a suitable roof hole angle is received for drilling of the roof hole.
  • a drill boom arrangement with parallel motion linkage means for positioning a rock drilling apparatus to a plurality of drilling positions all substantially parallel to one another said drill boom arrangement comprising a rock drilling apparatus, a boom support, a drill boom swingably mounted at the rear end thereof on said boom support, first pivot means on the forward end of said drill boom and connected for supporting said rock drilling apparatus pivotally thereon, a supporting link pivotally journalled on the intermediate portion of said drill boom and extending rearwardly with respect to said drill boom, second pivot means on the rearward end of said supporting link and connected for supporting said rock drilling apparatus pivotally thereon, means on one of said pivot means providing longitudinal movability of said rock drilling apparatus relative to said one pivot means during pivotal movement of said drill boom and supporting link, and a pilot link pivotally journalled on said supporting link and on said boom support for providing substantially parallel displacement of said rock drilling apparatus through the intermediary of said supporting link when said drill boom is pivoted relative to said boom support.
  • a drill boom arrangement in which said means providing longitudinal movability of said rock drilling apparatus includes guiding elements extending longitudinally thereof, and a bracket pivotally carried by said first pivot means and supporting said guiding elements and thereby said rock drilling apparatus longitudinally slidably thereon, and in which aid second pivot means is connected to said rock drilling apparatus fixedly with respect to said guiding elements.
  • a drill boom arrangement in which said rock drilling apparatus includes an elongated feed shell and a rock drill slidably supported on said feed shell for reciprocal movement along said feed shell, and in which said guiding elements extend along said feed shell with said second pivot means connected to the rear end of said guiding elements, bracket means supporting said feed shell longitudinally slidably on said guiding elements, and hydraulic cylinder an piston means connected between said guiding elements and said feed shell for adjusting said feed shell longitudinally on and relative to said guiding elements.
  • a drill boom arrangement in which said supporting link is a double-armed link frame pivoted to and crossing said intermediate portion of said drill boom, and in which said pilot link is pivotally connected to the arm of said link frame opposite to said second pivot means.
  • a drill boom arrangement according to claim 1 in which said pilot link includes hydraulic cylinder and piston means for respectively extension or contraction thereof and angular adjustment of said rock drilling apparatus relative to the parallel drilling positions thereof.
  • a drill boom arrangement according to claim 5 in which said hydraulic cylinder and piston means consists of two hydraulic cylinders connected to one another with the piston rod of one of them in operative engagement with said supporting link and of the other with said boom support.
  • Drill boom arrangement in which said boom support is carried rotatably on an axle parallel with said rock drilling apparatus in said parallel positions thereof, a mounting rotatably receiving said axle, and a turning means on said mounting including hydraulic cylinder and piston means in engagement with said axle for selective angular adjustment thereof within a wide angle of the order of magnitude of 360.
  • a drill boom arrangement with parallel motion linkage means for positioning a rock drilling apparatus to a plurality of drilling positions all substantially parallel to one another said drill boom arrangement comprising a rock drilling apparatus which includes an elongated feed shell, a rock drill slidably supported on said feed shell for reciprocal movement along said feed shell, and an elongated guiding frame extending along and supporting said feed shell, a boom support, a drill boom swingably mounted at the rear end thereof on said boom support, first pivot means on the forward end of said drill boom, a bracket pivotally carried by said first pivot means and supporting said guiding frame and thereby said feed shell longitudinally slidably and pivotally relative to said drill boom, a supporting link frame pivotally journalled on the intermediate portion of said drill boom and extending rearwardly with respect to said drill boom, second pivot means on the rearward end of said supporting link frame connecting said supporting frame pivotally to the rear end of said guiding frame, and a pilot link pivotally journalled on said supporting link and on said boom support for providing substantially parallel displacement of said guiding frame and feed
  • a drill boom arrangement in which said supporting link is a double-armed link frame pivoted to and crossing said intermediate portion of said drill boom, and in which said pilot link is pivotally connected to the arm of said link frame opposite to said second pivot means.
  • a drill boom arrangement with parallel motion linkage means for positioning a rock drilling apparatus to a plurality of drilling positions all substantially parallel to one another said drill boom arrangement comprising a mounting, an axle rotatably received in said mounting, a turning means on said mounting including hydraulic cylinder and piston means in engagement with said axle for selective angular adjustment thereof, a boom support carried by said axle for rotation therewith, a rock drilling apparatus, a drill boom swingably mounted at the rear end thereof on said boom support in a plane including said axle, first pivot means on the forward end of said drill boom and connected for supporting said rock drilling apparatus pivotally thereon in said plane, a supporting link pivotally journalled on the intermediate portion of said drill boom and extending rearwardly with respect to said drill boom, second pivot means on the rearward end of said supporting link and connected for supporting said rock drilling apparatus pivotally thereon in said plane and parallel with said axle, means on one of said pivot means providing longitudinal movability of said rock drilling apparatus relative to said one pivot means during pivotal movement of said drill boom and supporting link, and a pilot link pivotally
  • a drill boom arrangement in which said means providing longitudinal movability of said rock drilling apparatus includes guiding elements extending longitudinally thereof, and a bracket pivotally carried by said first pivot means and supporting said guiding elements and thereby said rock drilling apparatus longitudinally slidably thereon, and in which said second pivot means is connected to said rock drilling apparatus fixedly with respect to said guiding elements.

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  • 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)
US738240A 1967-06-22 1968-06-19 Drill boom with parallel motion linkage means Expired - Lifetime US3476193A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8929/67A SE317342B (it) 1967-06-22 1967-06-22

Publications (1)

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US3476193A true US3476193A (en) 1969-11-04

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Application Number Title Priority Date Filing Date
US738240A Expired - Lifetime US3476193A (en) 1967-06-22 1968-06-19 Drill boom with parallel motion linkage means

Country Status (8)

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US (1) US3476193A (it)
AT (1) AT301474B (it)
CH (1) CH474662A (it)
FI (1) FI53488C (it)
FR (1) FR1570989A (it)
GB (1) GB1236460A (it)
NO (1) NO123277B (it)
SE (1) SE317342B (it)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711047A (en) * 1970-12-14 1973-01-16 Bradley Pulverizer Co Rock drill positioning machine
US3809344A (en) * 1971-12-08 1974-05-07 Anlegg & Maskin As Mobile drill rig
US3881556A (en) * 1973-05-22 1975-05-06 Poclain Sa Public works device comprises a body a telescopic jib
US3889906A (en) * 1973-07-03 1975-06-17 Atlas Copco Ab Drill Boom
US4037671A (en) * 1973-07-03 1977-07-26 Atlas Copco Aktiebolag Drill boom with hydraulic parallel motion means
US4410049A (en) * 1977-06-21 1983-10-18 Atlas Copco Aktiebolag Directional valve means for positioning machine units
CN104175292A (zh) * 2014-07-24 2014-12-03 哈尔滨金玉科技开发有限公司 一种水平打孔时使用的电镐支撑架
CN110065034A (zh) * 2019-05-27 2019-07-30 山东德建集团有限公司 一种冲击钻顶板钻孔装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108561089B (zh) * 2018-06-19 2024-04-09 四川宏华石油设备有限公司 一种管具处理装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614807A (en) * 1947-10-21 1952-10-21 Joy Mfg Co Rock drilling apparatus
US3295800A (en) * 1963-10-31 1967-01-03 Atlas Copco Ab Positioning device for rock drills
US3306374A (en) * 1964-04-23 1967-02-28 Atlas Copco Ab Polar positioning device for rock drills
US3399734A (en) * 1966-06-06 1968-09-03 Sherritt Gordon Mines Ltd Mobile rock drill carriage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614807A (en) * 1947-10-21 1952-10-21 Joy Mfg Co Rock drilling apparatus
US3295800A (en) * 1963-10-31 1967-01-03 Atlas Copco Ab Positioning device for rock drills
US3306374A (en) * 1964-04-23 1967-02-28 Atlas Copco Ab Polar positioning device for rock drills
US3399734A (en) * 1966-06-06 1968-09-03 Sherritt Gordon Mines Ltd Mobile rock drill carriage

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711047A (en) * 1970-12-14 1973-01-16 Bradley Pulverizer Co Rock drill positioning machine
US3809344A (en) * 1971-12-08 1974-05-07 Anlegg & Maskin As Mobile drill rig
US3881556A (en) * 1973-05-22 1975-05-06 Poclain Sa Public works device comprises a body a telescopic jib
US3889906A (en) * 1973-07-03 1975-06-17 Atlas Copco Ab Drill Boom
US4037671A (en) * 1973-07-03 1977-07-26 Atlas Copco Aktiebolag Drill boom with hydraulic parallel motion means
US4410049A (en) * 1977-06-21 1983-10-18 Atlas Copco Aktiebolag Directional valve means for positioning machine units
CN104175292A (zh) * 2014-07-24 2014-12-03 哈尔滨金玉科技开发有限公司 一种水平打孔时使用的电镐支撑架
CN104175292B (zh) * 2014-07-24 2016-06-22 国网山东省电力公司莱芜供电公司 一种水平打孔时使用的电镐支撑架
CN110065034A (zh) * 2019-05-27 2019-07-30 山东德建集团有限公司 一种冲击钻顶板钻孔装置

Also Published As

Publication number Publication date
GB1236460A (en) 1971-06-23
NO123277B (it) 1971-10-25
FR1570989A (it) 1969-06-13
SE317342B (it) 1969-11-17
AT301474B (de) 1972-09-11
DE1752598B1 (de) 1971-09-30
FI53488C (fi) 1978-05-10
FI53488B (it) 1978-01-31
CH474662A (de) 1969-06-30

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