US2635855A

US2635855A - Drilling rig

Info

Publication number: US2635855A
Application number: US90191A
Authority: US
Inventors: Samuel D Gunning
Original assignee: LE ROI Co
Current assignee: LE ROI Co
Priority date: 1949-04-28
Filing date: 1949-04-28
Publication date: 1953-04-21
Anticipated expiration: 1970-04-21

Description

April 21, 1953 s, D. GUNNING 2,535,855

DRILLING RIG Filed April 28, 1949 4 Sheets-Sheet l INVENTOR. SAMUEL D. GUNNING AT TORNEY April 1953 s. D. GUNNING 2,635,855

DRILLING RIG Filed April 28, 1949 4 Sheets-Sheet 2 FIG.2

INVENTOR.

SAMUEL D- GUNNING ATTORNEY April 21, 1953 s. D. GUNNING 2,635,355

DRILLING RIG Filed April 28, 1949 4 Sheegs-Sheet 3 JNVENTOR. SAMUEL D. GUNNING ATTORNEY Patented Apr. 21, 1953 DRILLING RIG Samuel D. Gunning, Cleveland Heights, Ohio, as-

signor to Le Roi Company, Milwaukee, Wis, a corporation of Wisconsin Application April 28, 1949, Serial No. 90,191

This invention relates broadly to rock drilling apparatus, but more particularly to supporting rigs for fluid actuated drills.

In quarrying a certain type of rock, it has been customary to drill a line of vertical holes, leaving a narrow wall of rock or material between adjacent holes, which wall is subsequently cut away with a specially designed tool known as a broach. After removal of the rock in its original block shape, the faces of the block thus drilled and broached are dressed down to a smooth finish. Inorder to facilitate this dressing operation and eliminate excessive removal of material, it is very important that all holes be drilled vertical or at least exactly parallel to each other and in perfect Another, object of this invention is to provide such a rig with a drill centralizer located in close proximity to the face of the rock being drilled and enabling all drills to start the drilled holes at the exact desired location, that is, in perfect alignment.

Another object of this invention is to produce a portable drilling rig of the type above referred to, which can be moved from place to place by one man and which is so constructed as to enable all of the drills carried thereby to be operated by one man. c

Other objects and advantages more or less ancillary to the foregoing reside in the specific construction and aggroupment of the elements peculiar to this structure, as will become apparent from a more complete examination of this specification.

In the drawings which illustrate a preferred embodiment of the invention: Figure l is a perspective view of the drilling rig assembly. In this figure, only one rock drill with its lubricator and connection is shown.

Figure 2 is a top plan view of the rig assembly shown in Figure 1. In this figure, the rig is shown carrying six rock drills, each shown with their own lubricator and connection.

Figure 3 is a top plan view of the drill steel centralizer shown in Figure l.

Figure 4 is a side elevational view of the drill steel-centralizer shown in Figure 3. 1

8 Claims. (01. 25551) Figure 5 is an enlarged sectional view taken through line 5-5 in Figure 3.

' Figure 6 is an enlarged longitudinal sectional viewof the feed mechanism Figure 7. is an enlarged cross-sectional view taken on line 1-! in Figure 1.

Figure 8 is an enlarged cross-sectional view taken on line 88 in Figure 3.

Referring to the drawings, in which like symbols designate corresponding parts throughout the several views, the drilling rig assembly comprises a substantially horizontal base frame A, a reinforcing frame B, a vertically substantially U- shaped frame C, a drill carrying or sliding frame D and a centralizer E. The base frame A is formed of two channel shaped side members It! and It united by cross members l2 and [3. In practice, this base frame is preferably the frame of a' motor driven vehicle such as a tractor I 4 shown in dotted lines in Figure 1. Extending laterally from the base frame A, there are two parallel arms [5, which are rigidly secured to the base frame and carried thereby. In practice, the outer ends of the arms l5 extend laterally beyond the wheels-of the tractor l4, and are provided with adequate clamps. I6 through which is secured to the arms [5, and consequently to the base frame A,the vertical frame C'. This last frame includes two parallel vertical side members or uprights l1, preferably made of tubing, secured together by a cross member l8 preferably welded to the upper ends thereof as at IS. The lower ends of the side members ll are rigidly secured to the arms [5 through the clamps I6.

Assisting in thecsupport of the vertical frame C, there is the brace frame B, which consists of a vertical member 20 having its lower end rigidly securedto' the base frame A at a place laterally spaced from the clamps [6 of the arms I5. In practice, this brace or vertical member 210 is preferably located on the side of the tractor I4 opposite the side from which extend the arms l5. Welded tothe upper end of the member 20, as at 2 l there is a horizontal member 22 terminated by a clamp 23 through which it is rigidly secured to the crossmember l8 of the vertical frame C. Welded to the

members

20 and 22 and extending diagonally therebetween, there is a reinforcing brace 24.

The sliding frame D is substantially H -shaped and includes two parallel sliding bearings 25 united together by a .crossmember 26 which is preferably welded thereto as at 21. The sliding bearings 25 are sleeve-like and made to slide on the sidemembers ll of the vertical frame C.

Through these hearings, it will be understood that the drill carrying frame D is capable of sliding up and down on the vertical frame C. This sliding movement of the frame D is effected through a fluid actuated feeding mechanism generally designated by F, which includes a cylinder 28 having its upper end closed by a cap 29. This cap forms a part of a clamp generally designated by 30 through which the upper end of the cylinder 28 is rigidly secured to the cross member l8 of the vertical frame C. The lower end of the cylinder 2% is normally closed by a plate 3| secured in position by bolts 32. In the cylinder is reciprocably mounted a piston 33 having a rod 34 secured thereto for movement therewith and extending therefrom through the plate 3|. The free end of the piston rod 34 is reduced in diameter as at 35 to fit closely into a sleeve-like connector 36 where it is rigidly clamped in position by a nut 37. The connector 33 is made an integral part of the cross member 26v of frame, D, and is located about. half way between the sliding bearings 25. The cap 29 of the cylinder 28 is drilled and threaded as at 38. to receive one end of a motive fluid conveying conduit. 39, through which motive fluid may be admitted into the upper end of the cylinder 28 via

ports

40 and 41. The lower plate 31 is provided with a port, 42 which is also threaded to receive one end of a motive fluid conveying conduit 43, through which motive fluid may be admitted into the lower end of the cylinder 28..

On the cross member 26 of the drill carrying frame D, there are welded a; plurality of brackets 44. Preferably six of these brackets are provided and are equally spaced as clearly shown in, Figure 1. They have depending parallel lugs 45 which are drilled to receive a bolt 46 through which the back head 4'! of a rock drill 48 is rigidly secured to the frame cross member 26. In practice, the rock drills 48 are preferably of middle size and capacity, and of the compressed air actuated type, which compressed air is admitted from any available source of supply through a relatively large conduit 49 into acylindrical reservoir 50, which. reservoir is supported by brackets 5| carried by the base frame A. Admission of compressed air into the reservoir 50 is controllable through a throttle valve 52 mounted at the inner endof the reservoir. Intermediate its ends, the reservoir 53 is providedwith six connections 53, each adapted to receive one end of a lubricator 54, while the other end is connected to a flexible conduit 55 through which compressed air and lubricant is supplied to each rock drill 48. In Figure 2, the conduits 55 are shown with a portion broken away to better illustrate the lubricator '54, and. between the reservoir 50 and the frame D, they are preferably held together by a clamp 56. In addition to being carried by the reservoir 50, the lubricators are also supported. by a channel shaped member 51 which rests on the brackets SI. On one end of this member is. secured a two way throttle valve 58 having compressed air admitted thereto from any available source through. a conduit 59. Leading from the throttle valve 58, thereis the conduit 33 which opens into the upper end: of the feed cylinder 23 and the conduit 43 which opens: into the lower end of the cylinder.

The drill steel centralizer, generally designated by E, includes a channel shaped member 60 having welded to each end portion a short channel shaped piece 6!, which forms end portions of substantially rectangular cross section. Each end portion is provided with a bore 62 extending vertically through the side walls of the channel member and piece 60 and 6| and adapted to receive the extreme lower ends of the side members ll, which lower ends protrude below the clamps 16 of the arms Hi. This channel shaped member 60, hereinafter referred to as the centralizer base, is rigidly secured to the side members I! by through bolts 63. Adjacent its ends, the-base 60 is provided with pivot blocks 64 welded inside of the channel shaped base 60 and protruding laterally from the bottom or Vertical wall thereof. Each block 64 has an aperture 65 extending vertically therethrough and adapted to receive a pivot pin 65. The movable portion or gate of the centralizer is also formed of a channel-shaped member 61 which has its bottom or vertical wall, near the ends thereof, cut away to cause the side walls thereof to form longitudinally extending lugs 68 which are bored to receive the pivot pin 66 and throughwhich the gate is normally held in operative position. To aiford better bearing between the lugs 68 and pivotpin 66, there is Welded on. each lug a rela tively thick washer 69. In operative position, the two channel members 36 and El are mounted in opposition to each other and. have their side walls, that is the upper and lower Walls of the centralizer, provided with a plurality of holes 10 extending vertically therethrough. The holes 10, six of which are used in the. construction shown, are disposed in exact alignment with their centers located between the two channel. shaped members. 60 and 61, so that each member is actually formed with. only half holes, all of which are of a diameter materially larger than. that of the drill steels which are intended to extend therethrough as hereinafter explained. Secured on the side, walls of the member 60 by through bolts H, there are strips of harder steel. 12 which extend substantially the full length of the members. Similar strips 13. are fastened on the side walls of the member 6! by through bolts 14'. These strips are also provided with half holes T5 disposed; in. axial alignment with the hole 10, and are of a diameter materially smaller than that of the holes Ill. With. the centralizer gate 61 closed, that is, positioned as shown in Figure 3, the half holes of the juxtaposed strips 12 and 13 form cylindrical guiding bearings for the drill steels 16 depending fromthe rock drills48. Since both. the upper and lower walls of the centralizer E have the strips l2- and. 13 secured thereto, it will be understood that the centralizer actually provides for two longitudinally spaced guiding bearings for each drill steel, thereby precluding the possibility of any hole being drilled out; of position or alignment. The centralizer gate 6,! can be opened at will simply by removing. one

of the pivot pins 66 and swinging. the gate on V the other pivot pin.. v

In the operation of the apparatus; the entire rig carried: by: a vehicle suchas. tractor I4 is moved to the desired. location. If a relatively long line. of holes has to be drilled, it will g-be advantageous to mount six rock drills on the-drill carrying. frameD, which drills are actually suspended. to the crossmember-26 of the frame D through the connections 'clearly shown in Figure 7. After the rock drills are thus-secured to the carrying frame and. connected to the lubricators 5'4 throughthe fluid conveying conduits 55,, the drill steels 16 may be inserted into, the front end ofzthe rock drill in the; usualqmanner. To that end, the drill carrying frame D; through the feeding mechanism F, is first raised to its maximum height on the vertical frame C, and the gate 61 of the drill steel centralizer E swun open to permit insertion of the drill steels into the front ends of the rock drills. Before closing the centralizer gate, the drill steels 16 are located in the guide bearings 15, which are coaxially disposed relative to the rock drills 48. Thereafter the throttle valve 52 may be partly opened to admit a small amount of compressed air into the reservoir 50, and therefrom to the rock drills 48 through the lubricators 54 and conduits 55, thereby causing all rock drills to operate simultaneously at reduced speed. Concurrently, the throttle valve 58 may also be operated to admit the desired amount of compressed air in the upper end of the feed cylinder 28 through the conduit 39 and ports 40--4l In this instance, the compressed air acting on the piston 33 will move it forward, causing the piston rod 34 secured to the member 26 of the drill carrying frame D to feed the frame, and consequently the rock drills carried thereby, toward the work. As the drill steels contact the face of the rock and start the drilling of the holes, they are prevented from moving away from the desired location by the longitudinally spaced guide bearings 15 of the centralizer E. After the holes are well started, the throttle valve 52 may be fully opened to operate the rock drills 48 at full speed. During the drilling operation, the operator, through the throttle valve 58, will regulate the rate of speed at which the drills are fed to the work.

When the drilling operation is terminated or when it is desired to remove the drill steels from the drilled holes, the operator through the throttle valve 58 will admit motive fluid into the front end of the cylinder 28 through the conduit 43 and port 42, causing the piston 33 to move upwardly and the piston rod 34 to pull or raise the frame D and rock drills 48 relative to the vertical frame 0. During this upward movement of the piston 33, compressed air previously admitted into the upper end of the cylinder 28 is free to exhaust therefrom through ports ll-40, conduit 39 and throttle valve 58.

From the foregoing description, it will be understood that the entire drill rig is movable from place to place, and if desired, after the six holes have been drilled, the rig can be moved to a new position to drill the next set of six holes, which holes may then be drilled in perfect alignment.

I claim:

1. A drilling rig comprising a base frame, a vertical frame carried by said base frame, said vertical frame including a pair of parallel guide members extending upwardly from said base frame and united at their upper ends by a cross member, a substantially H -shaped drill carrying frame including side members slidable on said guide members and rigidly united by a cross member, a plurality of rock drills carried by said last cross member for up and down movement with said drill carrying frame relative to said vertical frame, and a single fluid actuated feeding mechanism interposed between and secured to said cross members at substantially equal distances from said parallel guide members for effecting the up and down movement of said drill carrying frame.

2. A drilling rig comprising a base frame, a vertical frame carried by said base frame, said vertical frame including a pair of parallel guide members extending upwardly from said base frame and united at their upper ends by a cross member, a substantially H-sha-ped drill carrying frame including side members slidable on said guide members and rigidly united by a cross member, a plurality of rock drills carried by said last cross member for up and down movement with said drill carrying frame relative to said vertical frame, and a single fluid actuated feeding mechanism for effecting the up and down movement of said drill carrying frame including a cylinder having one end attached to one of said cross members, and a piston reciprocable within said cylinder having a rod extending through the other end of said cylinder and secured to the other of said cross members, said cylinder and piston being at substantially equal distances from said parallel guide members.

3. A drilling rig comprising a base frame, a vertical frame carried by said base frame, a drill carrying frame slidable on said vertical frame, a plurality of rock drills carried by said drill carrying frame for movement therewith, a drill steel carried by each rock drill, and a drill steel centralizer includinga centralizer base rigidly secured to the lower end of said vertical frame below said rock drills, a centralizer gate removably carried by said base, upper and lower parallel walls on said base and gate, a strip of hardened steel fixed on each of said walls, and means including apertures through said strips forming longitudinally spaced guiding bearings for each drill steel. l

4. A drilling rig comprising a base frame, a vertical frame carried by said base frame, a drill carrying frame slidable on said vertical frame, a plurality of rock drills carried by said drill carrying frame for movement therewith, a drill steel carried by each rock drill and a drill steel centralizer including a cen-tralizer base rigidly secured to said vertical frame below said rock drills, a centralizergate removably carried by said base, said base and gate being of channel shape mounted in face to face relation, and means on the upper and lower walls of said base and gate forming longitudinally spaced guiding bearings for each of said drill steels.

5. A drilling rig comprising a base frame, a vertical frame carried by said base frame, said vertical frame including a pair of parallel guide members extending upwardly from said base frame and united at their upper ends by a cross member, a. brace frame formed by a diagonally braced substantially L-shaped member rigidly connected to said base frame and cross member, a substantially H-shaped drill carrying frame including side members slidable on said guide members and rigidly united by a cross member, a plurality of rock drills carried by said last cross member for up and down movement with said drill carrying frame relative to said vertical frame, and a single fluid actuated feeding mechanism interposed between and secured to said cross members at substantially equal distance from said parallel guide members for effecting the up and down movement of said drill carrying frame.

6. A drilling rig comprising a base frame formed of two side members united by two cross members, a pair of parallel arms extending laterally and outwardly from one of said side members, a vertical frame including a pair of parallel guide members extending upwardly from the free ends of said arms and united at their upper ends by a cross member, a brace for said vertical frame extending from said cross member to the other side member of said base frame, a drill carrying frameinciuding two sleeve-like elements slidable on said guide members and rigidly unitedv by a cross member, a plurality of rock drills carried. by said last. cross member for up and down move ment with said drill carrying frame relative to said vertical frame, and av single fluid actuated feeding mechanism including cylinder and piston elements interposed between and secured to said cross members at substantially equal distances from said parallel guide members for effecting the up and down movement of said: drill carrying frame.

7. Adrilling rig comprising a base frame formed of two side members united by two cross members, a pair of parallel armsv extending laterally and outwardly from one of said side members, a vertical frame-including a pair of parallel guide members extending upwardly from the free ends of said arms and united at their upper ends by a cross member, and at the lower ends below said arms. by a base member, a brace for said vertical frame extending from said cross member to the other side member of said base frame, a drill carrying frame including two sleeve-like elements slidable on said guide members and rigidly united by a cross member, a plurality of rock, drills carried. by said last cross member for up and down movement with said carrying frame relative to said vertical frame, a single fluid actuatedfeeding mechanism including cylinder and piston elements interposed between and secured to said cross members at substantially equal distances from said parallel guide members for effecting the up and down movement of said drill carrying frame, a drill steel carried by eachof said rock drills, and a. drill steel centralizer including said base member, a centralizer gate removably carried by said base member, said base member and gate being of channel bars mounted in face to face relation, and means on the upper and lower walls of said base member and gate forming longitudinally spaced guiding bearings for each of said drill steels.

bers, a vertical frame including a pair of parallel guide members extending upwardly from the free ends of said, arms and united at their upper ends by a cross member; clamping means between the free ends of said arms and said guide members, bracing means for said vertical frame including adiagonally braced substantially L-shaped member rigidly connected to said cross member and the other side member of said base frame, a substantially H -shaped drill carrying frame including side members slidable on said guide members and rigidly united by across member, a plurality of fluid" actuated rock drills carried by said last cross member for up and down movement with said drill carrying frame relative to said vertical frame, a motive fluid reservoir carried by said base: frame, amotive fluid conveying conduit between each rock drill and said reservoir, and a single fluid actuated feeding mechanism including cylinder and piston elements interposed between and secured to said crossmembers at substantially equal distances from said parallel guide members for effecting the up and down movement of said drill carrying frame;

- SAMUEL D. GUNNING.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 80,387: Burleigh- July 28-, 1868 337,968 Manning Mar. 16, 1886 513,088' Crane Jan. 23, 1894 545,675 Byrne Sept. 3, 1895 1,265,494 Packard May 7, 1918 1,482,396 Hansen Feb. 5, 1924 1,503,895 Hansen Aug. 5, 1924 1,755,255 Grifiith Apr. 22, 1930 1,945,322 Lafayette, Jr Jan. 30, 1934 2,001,576 Johnson May 14, 1935 2,179,316 Anderson -1 Nov. 7, 1939 2,192,192 Johansen Mar. 5, 1940 2,308,517 Konnerth Jan. 19, 1943 FOREIGN PATENTS Number Country Date 9,879 Great Britain 1908