US2711305A - Travelling controlling apparatus for underground mineworks or the like - Google Patents

Description

June 21,1955

K. HENKEL 2,711,305 TRAVELLING CONTROLLING APPARATUS FOR UNDERGROUND MINEWORKS OR THE LIKE Filed Jan. 24, 1951 s Sheets-Sheet 1 Inventor W Qw MW June 21, 1955 HENKEL 2,711,305

TRAVELLING CONTROLLING APPARATUS FOR UNDERGROUND MINEWORKS OR THE LIKE Filed Jan. 24, 1951 3 Sheets-Sheet 2 lnvenfor' by MW guy/MW June 21, 1955 K. HENKEL 2,711,305

TRAVELLING CONTROLLING APPARATUS FOR UNDERGROUND MINEWORKS OR THE LIKE v Filed Jan. 24, 1951 v 3 Sheets-Sheet 3 In yen for Aflorngys by I it Siafis TRAVELLENG CQNTROLLING APPARATUS FOR. UNDERGRDUND MINEWORKS OR THE LIKE Karl Henkel, Sprockhovel, Germany Application January 24, 1951, Serial No. 207,550 Claims priority, application Germany February 14, 1949 8 Claims. (Cl. 255-51) atent releasing check members or" the like.

the holes, even in rock, by means of a drilling machine with rotary drills. Experiments in this direction are proceeding with promising results.

The invention solves the problem of developing a transportable device for producing drill holes in underground mineworks or the like, which is so constructed that the holes can be made in any desired position and direction of drilling more easily than with the hitherto known devices.

An essential characteristic of the subject of the invention consists in that on a transportable, preferably travelling frame there are arranged one or more arms which pivot about a common axis and Whose length is variable, each carrying at their outer end a pivotally arranged drilling device which can operate obliquely or parallel to the pivotal axis of the carrying arm.

Preferably the invention'employs a shaft or link pin arranged fast on the frame and on which the arms carrying the drilling tools are pivotally mounted, for example by means of suitable bearing bushings.

The movement of the arms carrying the drilling tools is effected according to the invention by self-checking worm gearing which may be operated by hand or, preferably, by motor. I

A further essential characteristic of the drilling device according to the invention is the arrangement on the frame of a piston actuated by pressure medium and which is arranged to clamp the device between ceiling and floor of the drift or tunnel. For this purpose the pressure piston is connected with a piston rod which carries a shoe or the like acting against the roof of the drift.

There may further be provided on the frame, according to the invention, preferably on the fixed pin or shaft on which are carried the carrying arms, an extension, directed against the end of the drift or the breast of the tunnel, by means of which the device can be supported on the end or the breast.

The carrying arm of the device according to the invention preferably consists of a main part, which is pivotal and possibly longitudinally movable to the pivotal axis, and a beam, mounted so as to be movable longitudinally thereon, whose end carries the drilling tool. In order to move this beam the invention preferably employs a self checking gearing which acts on a rack provided on the beam. Moreover it may be advantageous, for rapid movement of the beam to provide a pressure medium piston which may for example be actuated by compressed air. a

The drilling tool is, according to the invention preferably arranged in two axles which can pivot on the carrying arm or its beam. In this way the pivotal mounting of the drilling tool may for example be pro:

2 vided with an automatic checking, for example in the form of a friction brake which holds the tool during the drilling operation butwhich permits its movement with a somewhat larger expenditure of force but Without Thewhole drilling device is preferably arranged on a travelling frame with a motor drive for'travelling. The running wheels for the travelling frame are preferably arranged in special rotary frames which for theirpart pivot about a vertical axis andan axis extending transversely to the direction of travel, thus facilitating the placing of thedevice on'the rails or turning thereon.

As a drilling tool the invention preferably employs a.

machine working with rotary drilling, the driving motor therefor beingarranged movably with the drill'in a guide frame which isitself movably carried'on the carrying arm. Moreover, according to a further important characteristic of the invention the driving motor of the drill and'the advancing motor are preferably arranged at different ends of the guiding frame, the pivot point being in a middlepart of the frame. In this Way there is provided an advantageous equalisation of weight and the drilling tool can be more easily actuated. In addition this arrangement gives the advantage that the advancing spindle which is preferably made hollow, is only given tensional stress and not compressive stress on pressing the drill against the end. 1

The drilling device according to the invention provides the possibilityof drilling holes in any desired position and direction within the range of the carrier arm. During drilling the subject of the invention is clamped fast with the rock in which the main axle or the like holding the rearward end of the carrying arm and the drilling tool is fixed by the said clamping column. As soon as the position of the main axle of .the apparatus according to the invention is secured by clamping against the end and between the roof and the floor the carrying arm can be .swung into the correct position by means of worm gearing and regulated in its length to the extent desired by longitudinal movement in the guiding housing by means. of a crank and rack.

The. drawing shows one form of construction of the invention in which: I

Fig. '1 is a front elevation of the apparatus,

Fig. 2 is a side elevation,

Fig. 3 is a plan,

Fig. 4 is a section on the line IVIV of Fig. 3 through i a part of the apparatus,

Fig. 5 shows, to a larger scale, a plan of the pivoting the apparatus may be easily pushed on to the track 3 or, I

for example, from the track 3 on to the track formed by the rails 6 and 3. v e

On the frame 1 there are secured two-struts 7, 8 which carry a fixed shaft 9 which is connected at'10 with a column 11.. in the column 11 there is provided a piston 12, actuated by a pressure medium, for example, compressed air, and whose piston rod 13 extendsv upwards from the housing and carries a shoe 14 which in the form of construction illustrated is arranged to receive a wooden beam 15. By upward movement of the pressure piston 12 the apparatus may be clamped fast against the roof of the drift or tunnel through the beam 15. Moreover a movable prop 16 is provided which receives or diverts the back pressure during drilling. 7

On the shaft 9, there are rotatably mounted between 2,711,305; Patented June 21, 1 955:

the frame struts 7, 8 two sleeves 17, 18 on which are arranged means for supporting and guiding the arms 19, 29 each carrying a drilling machine. A gear wheel 21 is secured to the one end of each of the sleeves 17, 18. Each gear wheel 21 meshes with a pinion 22 which is connected by the shaft 23 with a worm gear 24-. On the worm wheel 24 there acts the worm 25 which is operated by a motor, not illustrated in the drawing, such as a compressed air motor, in one direction of rotation or the other. The worm drive 24, 25 is made so as to be selfchecking.

The carrying arms 19, 20 are made of channel irons preferably I-shaped and are arranged so as to be longitudinally movable in guides 26 secured to a casing 26a connected to the one end of the sleeves 17, 13 each (see Fig. 2). Said guides 26 are formed by any suitable means, for instance by two substantially U-shaped members secured parallel one another to the casing 26a, one of each side of the arms 19 and 28 respectively. Longitudinal movement of the carrying arms 19, 24? is made by a motor 27 arranged on the casing 26a and connected to a pinion 28 which meshes with a gear wheel 29. The shaft 32 of said gear wheel 29 is connected to a worm 32a arranged inside the casing 26a, and said worm meshes with a gear wheel 3% arranged inside the casing 26a (see Fig.

2) and engaging a rack 31 arranged on the underside of arms 19, 26 each. The driving system formed by the worm arranged on shaft 32, the Wheel 30 and the rack 31 is made self-checking. By means of this drive the carrying arms 19 and 29 can be moved in any desired position, for example between the one end position of the carrying arm 19 shown in Fig. l and the other end position of the carrying arm 19 indicated in dotted lines 33.

in Figures 5 and 6 there is indicated at 33 a bearing pin which is secured in any convenient way, for example by welding, to the ends of the beams 34 and 35, respectively. Said bearing pin 38 being substantially cylindrical, has recesses 28a arranged on opposite sides of the pin in such a manner that a plate 51 may be arranged displaceably but not rotatably by means of members 41a engaging said recesses 38:; and corresponding recesses (not shown) in the plate 41. On the pin 33 there is rotatably mounted by means of its central hub-like part 39 the housing iii. Between the plate 41 and the housing iii there is arranged a friction lining 42 and likewise between a loose plate 43 and the plate 41 the brake lining 44. The plate 43 is connected with the housing 4% by screw bolts 45 on each one of which there is arranged a spring 46 so that in accordance with the adjustment of the nuts 47 the springs 46 press the plates 43 and 41 with a greater or lesser force against the housing 40 by means of the friction linings 42, 44. As the plate 41 is mounted non-rotatably on the pin 38 the rotary movement of the housing 4% on the pin 38 is 1016 or less strongly checked by the arrangement illustrated.

As can be seen from Figure 6, the housing 40 is substantially U-shaped. between its free shoulders there are swingably arranged about the link bolts 48, 49, two members 55, 55a, secured to a plate element 50 having depending integral members or tracks 51 which carry the frame 52 of the drilling tool.

The rotary movement of the element 50 is braked by the action of the spring 53 which presses the sector shaped plate 56 and the part 55 of the element 50 by means of the friction lining 56 against the lower flange 57 of the housing 41 On top, at the other side the element 50 is guided through the bolt 58 which extends through a curved slot 59 of the element 4% whilst the slot 61 is provided for the screw 6% in the other side of the element 40, holding the spring 53.

The swinging movement of the element 59 about the bolts 48 and i9 is thus checked by means of the device 54, 55, 56, 5'7 in a similar manner to the swinging movement of the housing iii about the pin 33.

As a drilling tool there is provided in the apparatus illustrated a drilling machine with a rotary drill. The drilling tool has a frame 52 which is carried in the swinging head 36 in the manner described with reference to Fig. 6. The frame 52 is longitudinally movable in its guide 51 by means of a screw spindle 62 which is arranged within the frame 52. Said spindle 62 engages a nut 62a fixed to the element St). The spindle 62 is at its end near the handle 63 supported rotatably, but not slidably by the frame 52 and can be actuated in order to move the frame 52 longitudinally or by the hand crank 63. This longitudinal movement of the frame 52 relative to element 56 is used if the drilling tool is to be adjusted without changing the position of the whole drilling device.

The drill driving motor 64 is movable on the frame 52 of the drilling tool by means of a slide 65. The moving of the driving motor 64 is effected by means of a threaded spindle 66, actuated through the gear wheels 67 from the motor 68 which is arranged on the end of the frame 52 directed towards the end of the shaft. As can be seen from Fig. 3 there is an advantageous equalisation of the weight of the two lever arms, given by the position of the pivot point of the frame 52 on the swinging head 36, by means of this opposed arrangement of the drill driving motor 64 and the advancing motor 68. The drill spindle 69 is mounted between rollers 70 (Fig. 4) and carries at the front end a drill 72 provided preferably with hard metal cutting edges.

In the employment of the apparatus for drilling work the apparatus is first of all clamped in the drift or tunnel by means of the pressure piston. Then the carrying arms, which can preferably pivot by more than on the axle 9, are brought into the required position for the production of the drill hole and the drilling tool is correspondingly inwardly pivoted. The advancing motor 68 of the drill tool is then started up and draws the'drill spindle against the end 71 of the shaft (Fig. 3). The advancing spindle 66 can be made hollow in order to save weight, as it is stressed substantially in tension only.

The drill is held with the desired pressure against the end of the shaft and the base of the drill hole by means of the advancing motor 68. Accordingly the driving motor is gradually moved against the end of the shaft, as indicated at 64a on the left side of Fig. 3. As soon as the drill hole has reached the desired depth the direction of rotation of the advancing motor 68 is reversed and the drill is returned into the initial position (right half of Fig. 3). The carrying arms and the beams are then adjusted and the succeeding drill holes made.

It can be seen from Fig. 3 that the drilling apparatus is preferably operated approximately in the middle of the drift or the tunnel, but it is however also possible to arrange the apparatus according to the invention on one side, as the carrying arms and the beams permit practically any desired position of the drilling tool.

By arranging the drilling tool obliquely or swinging it about its bearing on the swinging head, it is also possible to make obliquely extending drill holes for so-called conical cutting. On the other hand the apparatus can also be applied to the production of parallel extending drill holes, which are employed in the so-called Brenner cuttings.

The drifts or the tunnels are preferably provided with double tracks, the central rails of the two tracks being so spaced from each other that a third track is formed on to which the drilling apparatus according to the invention can readily be brought by means of a turn-table as normally used.

The capacity of the drilling apparatus according to the invention is very great. It is for example possible to drill a cross working with about 40 to 50 holes in one and ahalf hours. With the drilling device according to the invention it is possible to use high pressures on the drill so that, even in hard slate, drillings of about 2 metres in depth can be made in about one minute, Whilst in medium-hard sandstone the same depth of drilling can be achieved in one and a half minutes.

I claim:

1. A drilling apparatus of the class described including a portable frame, a supporting shaft mounted on the frame and extending lengthwise thereof, spaced bearing longitudinally movable thereon, a drilling tool connected to said beam, and means for moving the drilling tool so that it may operate at different angular positions relative to said supporting shaft.

2. A drilling apparatus as called for in claim 1" in which self-checking means are operatively connected to said beam for actuating the same.

3. A drilling apparatus as called for in claim 1 in which said traveling beam extends transversely of said carrying arm, and means are provided for slidably connecting said arm to said traveling frame.

4. A drilling apparatus of the class described including a portable frame, a supporting shaft mounted on the frame and extending lengthwise thereof, spaced bearing members axially mounted on said shaft, each of said bearing members having a laterally and outwardly ex tending guide, carrying arms slidably mounted in the guides, a vertically disposed guide frame, means movably connecting each of said arms to said frame, a drill rod, a drive motor operatively connected to said drill rod, means slidably connecting said motor to said frame, an advancing motor, and a rotary spindle connected to said drive motor for moving the drill rod.

5. A drilling apparatus as called for in claim 4 in which the drive motor and the advancing motor are positioned on opposite ends of the frame so that the spindle is subjected only to tensile stress when the apparatus is in operation.

6. A drilling apparatus as called for in claim 4 in i which. said motors are disposed on opposite ends of the frame, and the advancing motor includes a gear mechanism operatively connected to said spindle.

7. A drilling apparatus of the class described including a portable frame, a supporting shaft mounted on the frame and" extending lengthwise thereof, spaced bearing members axially mounted on said shaft, each ofsaid bearing members having a laterally and outwardly ex tending guide/carrying arms slidably, mounted in the guides, each of said arms having a movable beam associated therewith, a housing rotatably connected to said beam, a guiding casing pivotally connected to said housing, a vertical supporting frame, means slidably connecting said casing to said frame,-means for longitudinally moving the casing relative to the frame, a drilling rod, a driving motor operatively connected to said drill rod, means slidably connecting said drive motor to said frame, an advancing motor, arotary spindle operatively connected to said advancing motor, means connecting," said spindle to said drive motor for axially displacing the drill rod, said motors being positioned on opposite sides of said frame for balancing-the latter during the operation of the apparatus.

8 A drilling apparatus as called for in claim 7 in which means are provided for braking the pivotal move-,

ment of the casingrelative to the housing.

References Cited in the fileof this patent UNITED STATES PATENTS.

1,180,634 Bravi Apr. 25,1916 1,978,368 Levin Oct. 23, 1934 2,162,552 7 Hirschberg .'June 13, 1939 2,415,205 Gartin Feb. 4, 1947 2,480,661 Manning Aug. 30,1949 2,500,932

Curtis et a1. Mar. 21,

Images