US3305272A - Rig for boring drill holes in the face of a shaft in the sinking of a vertical mine by blasting - Google Patents

Description

Feb, 21, 1967 v G. ZHADAEV ETAL RIG FOR BORING DRILL! HOLES IN THE FACE OF A SHAFT IN THE SINKING OF A VER'IICAL MINE BY BLASTING Filed April 29, 1963 5 Sheets$heet l Feb. 21, 1967 ZHADAEV T 3,305,272

RIG FOR BORING DRILL HOLES IN THE FACE OF A SHAFT IN THE SINKING OF A VERTICAL MINE BY BLASTING Filed April 29, 1963 3 Sheets-Sheet 2 21, 1967 v. G. ZHADAEV ETAL 3,305,272

RIG FOR BORING DRILL HOLES IN THE FACE OF A SHAFT IN THE SINKING OF A VERTICAL MINE BY BLASTING Filed April 29, 1963 I5 Sheets-Sheet 5 United States Patent RllG FUR BORING DRli LL HOLES IN THE FACE OF A SHAFT IN THE SINKING UP A VERTICAL MINE BY BLASTHNG Valentin Georgievich Zhadaev, Moscow, Alexandr Alexandrovich Kuznetsov, Malakhovka, and Natalija Antonovna Morozova, Savelij Isaakovich Byderovyskij, Daniil lsaalrovich Maliovanov, Valentina Panteleevna Noviirova, llvan Sergeeviclh Novskij, Nickolai Alexeevich Forninov, Victor Lazarevich Pruzhiner, Rostislav Mickhailovich Agevnin, and Konstantin Nickolaevich 'Grishin, Moscow, U.S..R., assignors to Tsentralny Nauchnodssledorateisky Institute Podzemnoro Shakhtnoro Stroitelstva Filed Apr. 29, 1963, Ser. No. 278,798 5 Claims. (Cl. 299-70) The present invention relates to rigs for drilling bore holes and more particularly to rigs for drilling bore holes in the face of a shaft in the sinking of a vertical mine by blasting.

At present, the process of boring drill holes in the vertical sinking of shafts by rock blasting is normally preceded by marking off the drill hole diagram. Boring is effected either with manually operated pneumatic hammer drills (perforators), by suspended drilling machines, or multi-drill portable rigs. However, not one of the known drilling rigs provides for complete mechanization of the drilling, since in any of the situations listed above, manual labor is required for placing and securing in position the drilling rig as an entity, and for locating each of the hammer drills over the pre-seleoted drilling point.

Preliminary plotting and marking ofi? of the drill hole layout on the shaft face, and the manual labor referred to, involve a considerable loss of time and physical eifort on the part of the operating personnel. Moreover, it is not possible to ensure, irrespective of the skill and experience of the operating personnel, accurate drilling in accordance with the specified program and schedule.

An object of the invention is to provide an apparatus for boring drill holes which overcomes the above and other objectionable characteristics existing in the art.

The principal object of this invention is to exclude the operation of .a marking off of the drill hole prior to drilling, and to ensure complete mechanization of the drilling process.

Another object of the invention is the provision of safety factors in drilling and blasting.

A specific object of the invention is that the drilling machines (which are hammer drills), are lowered into the shaft as an assembled unit and are arranged and fixed in relation to each other in accordance with the specified layout of the drill holes on the shaft face.

When drilling is being effected successively in one sector of the face, and then in the next sector et cetera, the hammer drill set should be rigidly mounted for the duration of the drilling period on a carrier means, and, on completion of the drilling in one of the sectors should be swung along the periphery through a pre-set angle, with subsequent fixing in the new position as required for drilling in the next sector.

The drilling rig drills and means for supporting such drills in the mine shaft, and differs from the known rigs in that each of the hammer drills is attached to a common vertical rod, either directly by means of a hinge, or by hinged levers, which ensures a fixed position of the drills relative each other, in accordance with the approved diagram of the drill hole location on the shaft face.

To provide for d-rillhole boring successively in each of the face sectors, the ham-mer drill set supporting means is provided with the carrier means mentioned above, and the vertical rods with the hammer drills are rigidly connected for the duration of the drilling period to the carrier means for the duration of the drilling period to the carrier means.

To achieve the above objects, the hammer drill set supporting means is provided with a circular guide rail, along which the carrier means can be moved and the carrier means includes a stop gear for fixing the former in the desired position on the guide rail. The stop gear is defined by two pneumatic or hydraulic cylinders installed on the carrier means with such cylinders having springloaded pistons provided with fixing pins which fit into holes provided in the circular guide rail when the carrier means is being moved along the guide rail, and such holes are spaced at distances divisible by the spacing of the drill holes.

In order to ensure safety during drilling by preventing any possibility of the drill steel entering the bootlegs left after blasting, the fixing pin are so arranged that the angle between their axes equals approximately of the angle formed by the center lines of the adjacent holes in the circular guide rail.

To provide for the rigid fastening of the vertical hammer drill rod to the carrier means, the upper end of the rod is provided with a turnable bracket-shaped crossmember, which carries a roller on its free arm and crossmember is attached to the hook of the lifting gear used for lowering the drilling machine set in the mine shaft. The carrier means is equipped with curvilinear guides for the cross-member roller, and a pneumatic or hydraulic cylinder. which is enclosed on three sides by the bracket-shaped cross-member after its roller enters the curvilinear guides so that the cylinder-piston eifort transmitted through the roller fixes the position of the cross-member in relation to the carrier means.

When the drilling rig is employed in combination with a shaft mucker, the hammer drill rod and shaft mucker should be supported in the frames. The ends of the frame are secured to the carrier means which is movable along the circular guide rail, while the opposite ends are hinged to a vertical axis located in the center below the hammer drill set sup-porting means, with the frame supporting the hammer drill rod being swingable relative to a horizontal axis.

The hammer drill rod can be attached directly to the shaft mucker travelling gear, such as the telpher. In this situation, the curvilinear guides for the roller of the turnable cross-member should be fastened to the telpher.

Further objects and advantages of the invention will become more readily apparent to one skilled in the art from the following detailed description and annexed drawings, and in which drawings:

FIG. 1 is a vertical sectional view taken through a mine shaft with the present drilling rig and shaft mucker located therein,

FIG. 2 is a plan view on a smaller scale of the arrangement shown in FIG. 1,

FIG. 3 'is a fragmentary view partly in cross-section and partly in elevation of the stop gear of the rig carrier means,

FIG. 4 is an eleva-tional view of the turnable cross member,

FIG. 4a is an elevational view of the upper end of the rod,

FIG. 5 is an elevational view showing the position of the drill rod suspended from the cross member, and

FIG. 6 is a diagrammatic view of the drill hole layout.

As shown in FIG. 1, a shaft mucker is mounted on a horizontally disposed frame 1 and is provided with a remotely controlled catch mechanism 2. One end of the frame 1 is secured to a trolley 3 of a carrier means and the trolley rides on rollers 4 provided along a circular mono-rail 5 secured to a supporting structure for the drilling rig :and the mucker in the mine .shaft. The other end of the frame 1 is hingedly connected as shown at 6 in the center of the supporting structure. The shaft mucker can be controlled remote-1y from an operators cab 7 associated with the frame 1.

The drilling rig includes a vertical rod 8 carrying a system of hinged levers 9 which are required for locating drilling machines 10 in the desired position and the drilling machines may be of the percussion-rotary drill type, or the hammer drill type. The rod 8 is suspended from a frame 11 which is mounted in a similar manner to the frame 1, on a trolley 12 of the carrier means and the hinge connection.

In order to fix the carrier means in the desired position, a stop gear is provided and such stop gear is constituted by pneumatic cylinders 13 (FIG. 3) mounted on the trolley, and the cylinders are provided with springloaded pistons 14. The pistons are coupled to fixing pins 15 actuated by compressed air and the pins extend into the holes a in a flange 16 of the monorail.

The rod with the drilling machines can also be attached directly to a telpher 17 (FIG. 4) of the shaft mucker. In this situation, the telpher should carry a pneumatic buffer cylinder 18 and curvilinear guides 19, and the upper end of the rod be provided with a swinging crossmember 20 having a roller 21.

When the rod 8 attached to a hook 22 of a hoisting machine or winch approaches the telpher 17, the roller is caught by the guides 19, and when the rod is being lowered, the roller 21 slides along the guides and stops upon reaching the horizontal portion thereof.

After the rope is released, the cross-member 20 is swung about pivot 23 (FIG. 5) by the force of gravity of the rod with the drilling machines, the buffer cylinder 18 rigidly locks the rod to the telpher 17. It should be mentioned that the rod can be rigidly locked in position with its ends pressed to the mono-rail 5 and the shaft face by means of a hydraulic, pneumatic or screw-type buffer jack built into the rod (not shown).

The operation is as follows.

The rod 8 with the drilling machine is suspended as shown by the dot-dash lines in FIG. 1 from a rope 24, and is then lowered into the mine shaft and secured to the frame 11 or to the telpher 17. By means of the levers 9, the drilling machines 10 are arranged in accordance with the approved drilling diagram and fixed over a selected location B of the shaft face (FIG. 6) by using the stop gear. In this initial position, drill holes 12 are bored in the first face sector C, after which the drilling machines 10 are raised above the face, and the assembly as a whole, swung mechanically through the specified angle. The drill holes located in the second face sector, and in all of the other sectors are bored successively, with the stop gear functioning as later described.

The inner space of the cylinder 13 is in communication with ambient air thus providing for air bleeding until the fixing pin 15 actuated by spring 25 moves out of the hole a and is retracted into the cylinder. Following further movement of the trolley and the admission of compressed air into the cylinder 13, the fixing pin again slides along the flange 16 until it enters the next hole, et cetera.

On completion of one drilling cycle, the rod 8 with the drilling machines 10 is detached from the frame or the telpher and raised from the mine shaft to the surface.

Before initiating the next drilling cycle, the rod 8 is suspended again relative to the frame or telpher which has been preliminarily shifted through the required are in relation to the initial drill hole location. This shifting is achieved due to the fact that the trolley is fixed in relation to the mono-rail 5, pending each next drilling cycle by means of the fixing pin of the pneumatic cylinder which has been discollflfit ifid following the preceding cycle.

Thus, for shifting the drill hole system through /2 of the standard hole-to-hole distance, the angle formed by the two pneumatic cylinders should be equal to of the angle between the adjacent holes in the flange 16 of the mono-rail and in this way, any possibility of the drill steel entering the bootlegs left after blasting is prevented. Consequently adequate safety in drilling is ensured.

When the rod is attached to the frame 11, the frame, after being raised from the mine shaft, can be swung relative to the horizontal axis, and moved closely adjacent to frame 1, as shown by the broken line in FIG. 2. Hence, the total area of unoccupied space in the bottom of the shaft is increased thus facilitating travel of bucket 26 during mucking as shown in FIG. 2.

The drilling rig can be controlled from either the operators cab 7, or the shaft face and the drilling rig can also be used in those situations when mucking is carried out by manually operated pneumatic-loaders. In this latter situation, only the central axis and circular mono-rail are mounted on a supporting structure 27.

From the foregoing, it will be seen that the drill set is lowered into the mine shaft rigidly secured to the carrier means and with such means being arranged and fixed in relation to each other in compliance with the approved drilling and blasting diagram. The drill set is then moved to the location for initial drilling and fixed in such position. In the initial position, the drill holes in the first face sector are bored with the drills being fed by means of screw-type automatic feeders mounted on each drill and such operation can be performed with air or water flushing.

Following the formation of the holes in the first face sector, the drills are raised above the face and swung mechanically through the specified angle and in such position the second face sector is bored and the same procedure is followed for the remaining sectors.

The invention is not to be confined to any strict conformity to the showings in the drawings but changes or modifications may be made therein so long as such changes or modifications mark no material departure from the spirit and scope of the appended claims.

We claim:

1. A drilling rig for boring drill holes in the face of a shaft in the sinking of a vertical mine by blasting, comprising a plurality of drilling machines, means for fixing the drilling machines in relation to each other in accordance with a predetermined diagram, means for supporting the drilling machines in the shaft, carrier means, means for rigidly connecting the drilling machines to the carrier means for the duration of the drilling period, a circular guide rail for the supporting means, and biased stop means associated with the carrier means for fixing the drilling machines in relation to the circular guide rail in the desired locations.

2. The drilling rig as claimed in claim 1 in which the means for rigidly connecting the drilling machines to the carrier means includes a swingable cross member having a free arm, a roller carried by the free arm, lifting means for the rig, means for attaching the swingable cross member to the lifting means, curvilinear guides on the carrier means for said roller, a fluid cylinder and piston unit on the carrier means enclosed on three sides by the cross member after the roller enters the curvilinear guides and the cross member being fixed in relation to the carrier means by the cylinder-piston effect transmitted by the roller.

3. The drilling rig as claimed in claim 1 in which said stop means includes two pneumatic cylinders located on the carrier means, a spring loaded piston in each cylinder, a fixing pin carried by each piston, said circular guide rail being provided with a series of spaced holes with the spacing of the holes being based on the predetermined diagram, one of said fixing pins being fitted into the appropriate hole during movement of the carrier means, and said cylinders and fixing pins being located relatively to 5 each other at a distance corresponding to 75% of the pitch of the holes in the circular guide rail.

4. The drilling rig as claimed in claim 1 in which said stop means includes two fluid cylinders located on the carrier means, a spring loaded piston in each cylinder, a fixing pin carried by each piston, said circular guide rail being provided with a series of spaced holes with the spacing of the holes being based upon the predetermined diagram, and one of said fixing pins being fitted into the appropriate hole during movement of the carrier means.

5. The drilling rig as claimed in claim 4 in which said fixing pins are so arranged relative to each other that the angle between their axes is approximately of the angle between the axes of adjacent holes in the circular guide.

References Cited by the Examiner UNITED STATES PATENTS 1,032,049 7/1912 Ebbley 299 10 5 2,015,677 10/1935 Holmes 299-55 2,701,711 2/1955 Demo 299 55 X 2,731,235 1/1956 Dellner 173 52 X 2,823,899 2/1958 Bain 299 10 X FOREIGN PATENTS 10 1,022,537 1/1958 Germany.

255,521 7/1926 Great Britain.

ERNEST R. PURSER, Primary Examiner.

15 BENJAMIN HERSH, CHARLES E. OCONNELL,

Examiners.

Claims (1)

1. A DRILLING RIG FOR BORING DRILL HOLES IN THE FACE OF A SHAFT IN THE SINKING OF A VERTICAL MINE BY BLASTING, COMPRISING A PLURALITY OF DRILLING MACHINES, MEANS FOR FIXING THE DRILLING MACHINES IN RELATION TO EACH OTHER IN ACCORDANCE WITH A PREDETERMINED DIAGRAM, MEANS FOR SUPPORTING THE DRILLING MACHINES IN THE SHAFT, CARRIER MEANS, MEANS FOR RIGIDLY CONNECTING THE DRILLING MACHINES TO THE CARRIER MEANS FOR THE DURATION OF THE DRILLING PERIOD, A CIRCULAR GUIDE RAIL FOR THE SUPPORTING MEANS, AND BIASED STOP MEANS ASSOCIATED WITH THE CARRIER MEANS FOR FIXING THE DRILLING MACHINES IN RELATION TO THE CIRCULAR GUIDE RAIL IN THE DESIRED LOCATIONS.

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