US2867412A - Drilling machine for rock faces and the like - Google Patents

Drilling machine for rock faces and the like Download PDF

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Publication number
US2867412A
US2867412A US526149A US52614955A US2867412A US 2867412 A US2867412 A US 2867412A US 526149 A US526149 A US 526149A US 52614955 A US52614955 A US 52614955A US 2867412 A US2867412 A US 2867412A
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Prior art keywords
jib
drilling machine
turntable
chassis
drill
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Expired - Lifetime
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US526149A
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Hurd Eric Wilson
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F Taylor & Sons (manchester) Ltd
Taylor & Sons Manchester Ltd F
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Taylor & Sons Manchester Ltd F
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Priority to GB2867412X priority Critical
Application filed by Taylor & Sons Manchester Ltd F filed Critical Taylor & Sons Manchester Ltd F
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/02Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00Supports for the drilling machine, e.g. derricks or masts
    • E21B15/04Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs

Description

Jan- 6, E\ w DRILLING MACHINE FOR ROCK FACES AND THE LIKE 4 Sheets-Sheet 1 Filed Aug. 5, 1955 Inventor EH 4. W. Hurd ttorney Jan. 6, 1959 E. w. HURD DRILLING MACHINE FOR ROCK FACES AND THE LIKE 4 Sheets-heet 2 Filed Aug. 3, 1955 Inventor Er ic. W. Hurd ttorney' Jan. 6; 1959 w, HURD DRILLING MACHINE FOR ROCK FACES AND THE LIKE Filed Aug. 3, 1955 4 Sheets-Sheet 3 INVENTOR 52/09 W. #060 ATTORNEY Jan. 6, 1959 E. w. HURD 2,367,412
1 DRILLING MACHINE FOR ROCK FACES AND THE LIKE File d Aug. 3, 1955 4 Sheets-Sheet 4 INVENTOR FE/CH t. #060 ATTORNEY United rates Patent DRILLING MACHINE FOR ROCK FAC AND THE LIKE Eric Wilson Hurd, Pendleton, Salford, England, assignor to F. Taylor & Sons (Manchester) Limited, Salford, England, a British company Application August 3, 1955, Serial No. 526,149
Claims priority, application Great Britain August 7, 1954 1 Claim. (Cl. 255-51) This invention relates to a drilling machine for rock faces and the like, such as is used, for example, for drilling shot holes when mining iron ore.
Such a drilling machine is described in British patent specification No. 681,166 and consists of a wheeled chassis on which is mounted a jib carrying the drill unit. In order that the drill may be brought into position to operate, without moving the chassis, so as to cover a selected area of the face within the reach of the drill and with the required direction for the hole, the jib has been constructed for raising and loweringand for swinging to right and left or slewing. The drill unit being pivotally mounted on an axis transverse to the jib so that it can be tilted relative to such axis, the combined movement of the jib and tilting of the drill thereon being used to align the drill in the required direction. By such construction there are provided various axes of movement. In one machine made according to the invention of such earlier patent by the same inventor, this was made with twin tubular jib booms, each of which had an internally mounted tubular extension, the drill unit being pivoted between such twin booms on a cross shaft located between the outer ends of the tubular extensions thereof. At the lower end, the twin booms were secured in a cylindrical hub-like member rotatably journalled in a socket mounted on the turntable for elevation or tilting adjustment. In such machine, the use of twin booms was considered necessary in order that there should be no blind area of the rock face.
In practice it was found that the jib, as a whole, lacked somewhat in rigidity due both to the flexibility of the twin booms and to movement in the base mounting.
Also, such booms and base mounting appeared to be unduly heavy and cumbersome, though necessarily so because of the stresses to which they would be subjected.
The object of the present invention is to provide a drilling machine of the kind aforesaid having an improved construction providing greater rigidity for the jib and mounting while being at the same time of relatively lighter construction.
According to the present invention there is provided a drilling machine for rock faces and the like including a wheeled chassis, a turntable on said chassis, a superstructure on said turntable, a jib mounted on the superstructure and a drill unit on the jib characterised in that the jib is pivotally mounted on the superstructure and the drill unit is mounted on the jib so as to be rotatable about the longitudinal axis of the jib.
The invention will be described further, by way of example, with reference to the accompanying drawings in which:
Fig. 1 is a side elevation of a drilling machine according to the invention, part only of the jib being illustrated,
Fig. 1a is a section along line 1a1a of Fig. 1,
Fig. 2 is an elevation of the remainder of the jib and the drill unit, showing the manner of mounting the latter on the jib,
Fig. 3 is a section along line 3--3 of Fig. 1,
"ice;
Fig. 4 is a section along line 4-4 of Fig. 3,
Fig. 5 is an enlarged fragmentary view of the end of the jib on which the drill is mounted.
As shown in the drawings a machine for drilling shot holes in a rock face for example, of an iron ore mine, comprises a wheeled chassis 10 having pneumatic tyres 11 for convenience of transport and adapted to be moved by means of an electric motor 12 mounted thereon suppliedwith electric power through a suitable cable (not shown). This chassis 10 is of rigid construction with a high ground clearance so that it may, where necessary, be operated in a wet mine without detriment to the mechanism and apparatus mounted thereon. At each end of the chassis are heavy screw jacks 13 which may be screwed down into contact with the mine floor to provide a greater degree of stability than can be obtained from the pneumatically tyred wheels 11. There are three such jacks 13, one in the centre at the front and two at the rear which latter are pivotally mounted in brackets 14 which can be swung out to give working positions wider than the chassis 10 or swung back within the width of the chassis 10 during transport.
Mounted on the chassis 10 near the front end is a turntable 15 carrying an upstanding superstructure 16 of generally conical shape. At the apex of the superstructure 16 are bearings 17 for trunnions 18 of a jib 19. The
turntable 15 is adapted to be rotated by a turning mechanism including hydraulic rams 37 and a chain 39 engaged by sprocket wheel 40 and to be held firmly in any set position by clamping brakes 15a adapted to give additional rigidity and to relieve the turning mechanism of,
any torque load arising from drilling thrusts. The hydraulic rams 39 are mounted below the turntable 15 and between the sides of a sub-frame 20 secured to the chassis 10 at 41 and chain 39. The rams are secured to the underside of the turntable 15 and the chain passes around of a stationary chain sprocket rigidly secured to the sub-frame 20, reaction between the rams and the chain controlling rotational movement of the turntable 15. On the turntable 15 is a hydraulic ram 21 positioned diametrically across the same angularly with its rear end lowermost and mounted on suitable trunnions 22 on the turntable 15 and its forward end pivotally connected to a depending bracket 23 secured to the underside of the jib 19 near its rear end. The hydraulic ram 21 is adapted to control movement of the jib in a vertical arc.
The turntable and trunnion mounting for the jib 19 enable the latter to be twisted and raised and lowered for covering a large working face area.
The jib 19 comprises a main or base end 19a of open lattice construction for lightness combined with rigidity and strength and a tubular extensibleportion 24 slidably housed within the lattice structure being guided at the outer end in suitable bushes 25 and constrained from rotation by a sliding shoe 26 engaging a long key or guide rail 27 secured in the bottom of the lattice structure. Bush 25 consists of an annular member secured by bolts, rivets or the like to the end of jib 19 so that the extending portion 24 is located in position and is capable of being extended or retracted. Locking pin 42 passes through the end of the ram piston and through the framework located adjacent to the end of jib 19. Within the lattice is mounted the cylinder of a double-acting hydraulic ram adapted for extending and retracting the tubular extensible portion 24 of the jib, the tubular extensible portion 24 telescoping over the ram cylinder. On the outer end of the tubular extensible portion 24 of the jib is rotatably mounted a forked bracket 29 the arms of which extend laterally of the longitudinal axis of the jib 19 and carry transverse bearings 30 for trunnions 31 of the drill unit which is indicated generally by, the reference, numeral, 31a. Opposite the arms is a counter-balance tail 32 Within the end of the tubular extensible portion 24 and bolted to a flange 33 thereon is a helio-centric gear reduction unit 3412 driven by an electric motor 34: whichmotor serves to control the rotational movement ofthe drill unit around the jib. Secured to the bracket 29 is an end plate 35 having a central boss 36 adapted-to be located on, and keyed to, the output shaft 34a of the gear 34b. The motor 34 drives av heliocentric gear 3412 having a reduction ratio of 2800 to 1, thus driving the output shaft 34a at a speed of two revolutions per' minute. The output shaft 34a is keyed to the end plate 35, which is itself bolted to an aluminum boss 35a, which embraces a cast iron bearing surface 35b at. the end of jib 19. End plate X is bolted to flange 33 and. is provided with a threaded aperture through, which the end of the ram piston Y passes. This end portion also passes through a similar screw threaded hole in flange 33 and the extending portion thereof is provided with a cap, Z.
Arcuate movement of the drill unit 31a is controlled by hydraulic rams 31b attached at one end, by means of brackets (not shown), adjacent the upper end of the counter-balance tail 32. The other end of the rams are attached to the drill unit 310 forwardly of the trunnion 31 by means of brackets 31c.
,Thedrill unit 31a may be of any known construction such as that described in the specification of the aforesaid earlier patent, the means of rotation and feeding of the drill being described in my co-pending application for Patent No. 526,150.
What Iclaim'is: A drilling machine for rock faces and the like including a wheeled chassis, a turntable on said chassis, a superstructure on said turntable, a jib mounted by one of its ends for pivotal movement in a vertical are on said superstructure, a hydraulic ram mounted on said turntable and extending 'angularly upwardly to said jib, a pivotal connection between said ram and said jib at a position intermediate the ends of said jib, a motor mounted at the end of said jib, a counter-balanced'bracket mounted on said jib, a drill unit mounted in said bracket and connecting means between said motor and said bracket for controlling rotational movement of said drill unit about'the longitudinal axis of said jib, said jib comprising an outer part of lattice structure and, aninner' part of tubular construction, said motor being mounted on the outer end of said-tubular part, a hydraulic ram mounted in said outer part and connected to said inner part for controlling, extension from and retraction into said outer part of said inner part, guide rails within said outer part, and shoes secured to said inner part cooperating with said guide rails to prevent rotation of said inner part.
References Cited. in the file of this patent UNITED STATES PATENTS
US526149A 1954-08-07 1955-08-03 Drilling machine for rock faces and the like Expired - Lifetime US2867412A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983496A (en) * 1958-10-17 1961-05-09 Louis A Grant Earth moving machine
US3020012A (en) * 1959-02-27 1962-02-06 Chicago Pneumatic Tool Co Low overhead jumbo drill supporting bracket
US3030713A (en) * 1958-10-02 1962-04-24 Eimco Corp Material handling machine
US3078932A (en) * 1957-11-08 1963-02-26 Rogers Iron Works Company Drilling machine
US3111177A (en) * 1959-06-23 1963-11-19 Joy Mfg Co Pivoted feed leg type rock drill

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2123897A (en) * 1935-06-18 1938-07-19 Sullivan Machinery Co Drilling apparatus
US2491273A (en) * 1945-03-24 1949-12-13 Joy Mfg Co Drilling apparatus
US2532079A (en) * 1947-10-11 1950-11-28 Jeffrey Mfg Co Safety electrical control for drilling machines
US2586773A (en) * 1947-04-04 1952-02-26 Joy Mfg Co Blast hole drilling apparatus
US2627560A (en) * 1949-08-01 1953-02-03 Jay M Eitel Control mechanism for electrically driven apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2123897A (en) * 1935-06-18 1938-07-19 Sullivan Machinery Co Drilling apparatus
US2491273A (en) * 1945-03-24 1949-12-13 Joy Mfg Co Drilling apparatus
US2586773A (en) * 1947-04-04 1952-02-26 Joy Mfg Co Blast hole drilling apparatus
US2532079A (en) * 1947-10-11 1950-11-28 Jeffrey Mfg Co Safety electrical control for drilling machines
US2627560A (en) * 1949-08-01 1953-02-03 Jay M Eitel Control mechanism for electrically driven apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078932A (en) * 1957-11-08 1963-02-26 Rogers Iron Works Company Drilling machine
US3030713A (en) * 1958-10-02 1962-04-24 Eimco Corp Material handling machine
US2983496A (en) * 1958-10-17 1961-05-09 Louis A Grant Earth moving machine
US3020012A (en) * 1959-02-27 1962-02-06 Chicago Pneumatic Tool Co Low overhead jumbo drill supporting bracket
US3111177A (en) * 1959-06-23 1963-11-19 Joy Mfg Co Pivoted feed leg type rock drill

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