US2613061A

US2613061A - Machine for operating in rock, coal, and the like

Info

Publication number: US2613061A
Application number: US207218A
Authority: US
Inventors: Hurd Eric Wilson
Original assignee: HARDYPICK Ltd
Current assignee: HARDYPICK Ltd
Priority date: 1949-07-05
Filing date: 1951-01-22
Publication date: 1952-10-07
Anticipated expiration: 1969-10-07

Description

Oct. 7, 1952 l E. w. HURD 2,613,061

MACHINE FOR OPERATINGIN ROCK, COAL, AND THE LIKE Filed Jan. 22, 1951 4 Sheet's-Sheet 1 MACHINEFOR OPERATING IN ROCK, COAL, AND THE LIKE Filed Jan. 22 ,l 1951 E. W. HURD Oct. 7, 1952 4 Sheets-Sheet 4 @Mvwann Patented Oct. 7, 1952 MACHINE Foa OPERATING 1N noon, coAL,`

AND THE LIKE Eric Wilson Hurd, Sheffield, England, assigner to Hardypick Limited, Sheield, England, a corporation of Great Britain and Northern Ireland Application January 22, 1951, Serial No. 207,218 In Great Britain July 5, 1949 (Cl. Z55-51) 6 Claims. l

This invention relates to a machine for operating in rock, coal and the like.

When drilling a working face for setting blasting charges it is customary to mount the drill on a vertical pillar which is heldin position by being wedged between the iioor and ceiling. The drill is moved along the pillar to the required position until a row of shot holes has been drilled at the required spacing. The pillar is then moved to a new position. This means that to complete the drilling of the face the pillar has to be moved several times; moreover it is not always easy to mount the pillar so as to be able to drill shot holes near the side. I

One of the objects of the present invention is to provide a machine which will enable all the required shot holes to be drilled Without moving the machine.

In a coal or rock working machine according to the present invention a jib is adapted to carry a drill unit or drill holder and is turnable about a vertical axis, movable in a vertical plane, movable about its own axis and adapted to carry said drill unit or drill holder for pivotal movement about an axis normal to the axis of the jib. The jib may be mounted on a turntable which itself may be carried on a wheeled or track laying vehicle chassis.

Referring to the diagrammatic drawings illed herewith:

Fig. 1 is an elevation of one form of machine A made according to this invention.

Fig. 2 is a plan, parts being omitted for clearness.

Fig. 3 is a sectional elevation of the jib.

Fig. 3a is an extension of Fig. 3.

Fig. 4 is a plan of same.

Fig. 4a is an extension of Fig. 4.

Fig. 5 is a sectional detail view, drawn to an enlarged scale, on the line V--V of Fig. 2.

In Figs. l to 4 inclusive, sheets l, 2, 3 and 4,

a self-propelled chassis I0, sheets l and 2, of the track laying type is provided with wheels II, I2, at each side on which are carried tracks I3. Mounted Von the chassis slightlytowards the rear is a large toothed quadrant IlI horizontally disposed. Above the toothed quadrant and mounted for rotation over rollers I5 on the chassis is a turntable I3 the axis of which is vertical. The movement of the turntable through approximately '70 is effected by a turntable operating hand wheel I1 cna shaft I8 which is journalled in a pillar I9 mounted on the turntable, the shaft having at its lower end a pinion in toothed engagement Withthe large horizontal quadrant vrear thereof, the motors being coupled to and adapted to drive the shafts of the rear wheels I 2 in well known manner through suitable reduction gears, the primary drive being by chain enclosed in the chain case 23.` Steering is effected by dual control levers (not shown) in the known manner operating either or both ofr the motors. Two upstanding plates 24, Figs. 1 and 2, sheets 1 and 2, welded to the top of the turntable I6 and located for the most part to the rear ofthe centre and extending rearwardly, constitute brackets between which is mounted a jib cradle 25 on horizontal trunnions 2B, Figs. l, 2 and 3, sheets 1, 2 and 3, provided thereon and located at one end thereof, the journals 21 for which are provided in the plates 24 close to the `turntable operating hand wheel Il. Movement of the cradle 25 in a vertical plane between the plates 24 is controlled by hydraulic jacks 28, Fig. 1, sheet l, the cylinders of which are pivotally connected at 2B tothe rear of the turntables I6 whilst the piston rods 30 of the jacks are pivotally connected at 3| to an elevating bracket 32 secured to thejib cradle 25,

the pump for the `jacks being enclosed within a housing 33, Fig. 2, and being actuated by a hand lever 34. The housing 33 is xed to a central seat35 Vfor an operator of the machine, which seat also serves as a tool-,box and is locatedon and situated at the rear of the turntable I3 conveniently close to the turntable operating hand wheel I1. The central box seat 35 also serves as a convenient mounting for a switch box 35a for electrical switch gear one element of which feeds the chassis propelling motor switch box 35i)` through electrical lead 35e, the current being supplied through a feed cable 36 led into the switch box 35a.

Mounted and journalled in the jib cradle 25 is a hollow jib shaft 31, Figs. 3 and 4, provided with a worm wheel 38 whilst mounted on the outside of the jib cradle in suitable bearings and arranged tangentially to the worm wheel and in mesh therewith, is a worm 39 on one end of which isl mounted a jib rolling hand wheel 4G so that the jib shaft may be rotated or rolled slowly on its axis through from zero in either direc-tion to the desiredtangular position within the jib cradle self feeding electrically driven self contained drill unit 44 supplied by current from the switch box 35a, Fig. 2, by electrical lead-44a` and with feed' and retraction control lever 45 and Bowden wire control 46 mounted on the A.jibcradle-mounting. brackets 24. Pivotal movementothe drill unit" 44 about the mounting trunnions 4llfiscontrolled by a forked link rod 41, Figs. 3. and 4, dividedl intermediate of its ends and embodying a-stiff j' spring buler 48, the forked end of the 'link'rod being bifurcated and pivotally coupledto theihousing of the drill at "a point spaced from the drill Yrnountingttrunnionsr. whilstv the other end v is pivotallycoupledV -at -49 to ahollow internally threadederod'Sl which is--slidably mounted` in the hollow-jlb shaft 31.-- The rodl is caused to bev4 projected or withdrawn by. turning. a drill angling.. cranked .hand lever 5|- mounted at the rear end-.0f the jibcradle 25, .said hand lever being-*carried on a threadedshaft` 52 which; enters andengages the internally threaded rod 50.- The movement-of..the-.bifurcated. link` rod-4l thus gives-the. drill unit-a pivotal..movement .onits own -mountingvtrunnlons 43 withinthe journals 42r which movement canfbe lockedin. any desired angular position ofthe drill unit.

The-function of -the bulTer springl,v shown in Figs.-3 andai,isaembodledin the drll'unit angling control to allow..the drilllunit 44 Yto tilt-on its pivots to relieve any strainvvhich woulcLotherwise fall.v on -the drilltool or the drill shaft..

Inhoperation, -the. angle at which the. drill unit 44`is 4presented'canflie-varied. by rolling .the double boom -jib 4linthejib cradle 255through.y the medium ofV the jib rolling hand. wheel 40.1and/or by. pivoting. the .drilllunit .in the end ofthe. jib bymeans ofV the drillanglinghand lever 5l. The dri-ll unit .mayv be directed-to the desired `point onl raising or lowering...thejib.by the actuation of the pump. .hand lever 34 which Works thev pump for the jacksZB land/orfby-svvivellingxthe turns. table -I 6 vby ,-turning. theturntable actuating 'hand wheelfl'l.

By arrangingthatthe drilling tool '53'operates onan .aXiswl-ich'intersectsthe axis of the drill mountingtrunnions 43,'thethrust from drilling is taken by .said trunnionsand their journals 4,2 in the jlb. Furthervby.arrangingsaid `trunnions and the drilling tool. near a boundary of the body of the "drillunit'said drilling tool operates with verv small loss of headroom.

It will;` therefore, be seen `from the chain lines inpl'an view; Fig/2L` how the drillunit 44 can be disposed onits sidebj/"swingingthesjib 4 f to right or'leftiand" rolling it Onitsv axis through 90' at eitherfside from Zero,y thereby enabling the' drill unit to operate substantially at the-extreme sides of the-Working face154 -ofthecoal Similarly, by suitably-*lowering the'jibU--4I and' rolling it on its axis' through 180V? from'zero; the-'dri1l'-unit'wil1 bfdi's'p'osed in aninvertedposition to-operatel'substantia-lly yat any point- -in' the-'lowermost Apart of thewor'ki'ng face154;

Itl'is Vto bevnoted'- that all l'controls-'are arranged within" easy reach of the operative when the latter Vis seated o'nthel'iousing33" Suitable -lampsf are provided on the machine 4 to enable lt to be operated below ground and all electrical equipment is enclosed and switch gear is housed in flame proof boXes to comply with mine regulations.

Where it is required that the` turntable shall be capablebf being locked in any'desireddrilling position, a friction type clutch arrangement is provided between the pillar I9 and shaft I8, and carried by a flanged sleeve 60 non-rotatably Y mounted ontlieilpillar I9 adjacent the upper end thereof and supported by an integral flange 6| of the pillar. .Disposed around the sleeve 6D between and in' eontaotzwitlr a pair o1 friction rings 62, 63 thereonisatsteel. .ring 64, the friction ring 62 engaging the. flange 65 of the sleeve and the friotibrr ring :613 engaging a steel ring 66 which is slidablykeyed to the sleeve tu and supported by aflockingijring 6l having screw-threaded engagement with the sleeve 60,!the flange 6| of the pillar I 9.-. serving as--lastop.. for preventing....the locking ring 6'1 from becoming completely unscrewed-irom the. sleeve .60. Fonrotating.. the locking ring-.61, at least one v,arm 68'. is.y pivotall-yl. slung.V ,therefrom The-.arrangement is such .that when the locking ring 617is slackened Voil Ythe -ring 6451s free to rotate around the sleeve Bbut When-.said locking ring.` is tightened against the ring 66, the ring .64 is held against rotation through beingclampedto the frictionringsrLSSf- The ring v64 is. providedwith .an aperturer69, adjacent its periphery, whichis normally engaged by the-lower end of va spring-,urgedzdetent 'moar-.- ried in the hand wheel I'i by,afslidable-pin--JL The detent Ylll is .normally urgedlnto. engagement with. the aperture. Saof .the ring.. A64M-by means-:of a coiled spring. 'l'2` bearing. .against ashoulder 13 on the detent l0 and the end wall 14 orafsocketl inthe hand wheel l. The p in....1lis.provided with'a head. 16.1`

When Yit. lis. desired. to rotate the=v-turntab1e TI 6,. the .lockingring 5l isfrotated.V andeslackenedtby manipulating. `the arm 68 until. the clamping pressure of. thefric'tion rings fand -upon-.the ring64 is relieved-'andthe handl wheel I1 rotated until'the desired. angularmovementfof. the `turn-- table .is attained... The lockingringc'-can thenbe tightened to lock the ring 64 to the sleever andso to the pillar i9, to. lock -thezturntablein a particular drilling position. Ifwa temporary alteration inthe angular positionof the turntable becomes necessary, ithbeing.requiredsubsequently. to returnit. to .said 'angular position, the detent l10' is' raised, out of engagement with the aperture S9 bypullingonthepin 'Hy against the spring l2,""when.-ridingf.over. the yring..64..l To reset the turntable in the original. angular .position, it is only necessaryto' rotate the handwheel II until the detent`1Uldropsintoits aperture -69 i'n`the ring '154;i

It is .tobe understood Athat instead'.v of the various mechanisms,being .brought intov operae tin by manually controlledy 'meansashereinbefdredescrib'ed and. shownytliey may .be arranged to be .power operated and brought intooperation' by eleotricalcontrol means/suchas.-for..example; by pushebutton switches.; 1

A pivotedji'bl support"` andassociated'f clamp (not showrr)` 'maybe' provided'.- on'fthe turntable what i claim and desire te secure by Letters Pateritisf 1.; In a @parte rock working mahiae the commatten er titane turnable arent a vertical axis, mearisfor`V 'adjusting said turntable; a jib carrying` cradle carried on said turntable and pivotally mounted thereon at one end for movement in a vertical plane, means for adjusting said jib carrying cradle in a vertical plane, a hollow shaft journalled in said jib carrying cradle for rotation about its own Aaxis and movable with said jib carrying cradle, means for adjusting `said hollow shaft about its own axis, a jib l'member which is bifurcated at its outer end, said jib'member being coe'axial with said hllow shaft and secured thereto at its inner end, a drill unit pivotally cradled 'in the bifurcated end of said jib member for movement about an axis normal to the axis of the jib member said pivot intersecting the axis of the drill, and drill unit angle adjusting means comprising a rod member mounted in said jib carrying cradle for lateral movement in relation thereto together with associated lateral motion means, and a second rod member pivotally secured to the upper end of the latter and pivotally secured to said drill unit for rotational movement `of the latter about its pivoting axis.

2. In a coal or rock working machine the combinationof a turntable turnable about a vertical axis, means for adjusting said turntable, a jib carrying cradle carried on said turntable and pivotally mounted thereon at one end for movement in a vertical plane, means for adjusting said jib carrying cradle in a vertical plane, a. hollow shaft journalled in said jib carrying cradle for rotation about its own axis and movable with said `jib carrying cradle, means for adjusting said hollow shaft about its own axis, a jib member which is bifurcated at its outer end, said jib member being co-axial with said hollow shaft and secured thereto at its inner end, a drill unit pivotally cradled in the bifurcated end of said jib member for movement about an axis normal to the axis of the jib member said pivot intersecting the axis of the drill, and drill unit angle adjusting means comprising a rod member mounted in said jib carrying cradle for lateral movement in relation thereto together with associated lateral motion means and a second rod member pivotally and flexibly secured to the upper end of the latter and pivotally secured to said drill unit for rotational movement of the latter about its pivoting axis.

3. In a coal or rock working machine the combination of a transportable carriage having mounted thereon a turntable turnable about a vertical axis, means for adjusting said turntable, a jib carrying cradle carried on said turntable and pivotally mounted thereon at one end for movement in a vertical plane, means for adjusting said jib carrying cradle in a vertical plane, a hollow shaft journalled in said jib carrying cradle for rotation about its own axis and movable with said jib carrying cradle, means for adjusting said hollow shaft about its own axis, a jib member which is bifurcated at its outer end, said jib member being co-axial with said hollow shaft and secured thereto at its inner end, a drill unit pivotally cradled in the bifurcated end of said jib member for movement about an axis normal to the axis of the jib member said pivot intersecting the axis of the drill, and drill unit angle adjusting means comprising a rod member mounted in said jib 'carrying cradle for lateral assoc a odfmhibei pivotally secured to the upper end l of `the latter aridjoivhtally secured tosaid drill unit for-tational movement of the latter about its ivtihg axis. i i

"v4, In a `ical or rock working machine the combin'ati fof a` transportable carriage having iinted theie'n, a-'tiirntable turnable about a vergtrcai for adjusting said turntable, a in ying cradle carried onusaid turntable and* etal-ly mounted thereon at one end for rnveiiiht a vertical plane, means for adjusting said jibcarrying cradle in a vertical plane, a `hbllctvfshaft jcunall'ed in said jlb carrying cradle for `rotation about its own axis and movj able' 'with said jib carryingcradlameans for adjusting said hollw shaft aboutits own axis, a jib member which is bifurcated at its outer end, said jib member being co-axial with said hollow shaft and secured thereto at its inner end, a drill unit pivotally cradled in the bifurcated end of said jib member for movement about an axis normal to the axis of the jib member said pivot intersecting the axis of the drill, self feed and self retracting means associated with said drill unit, and drill unit angle adjusting means comprising a rod member mounted in said jib carrying cradle for lateral movement in relation thereto together with associated lateral motion. means and a second rod member pivotally secured to the upper end of the latter and pivotally secured to said drill unit for rotational movement of the latter about its pivoting axis.

5. In a coal or rock working machine the combination of a tracklaying vehicle having mounted thereon a turntable turnable about a vertical axis, means for adjusting said turntable, a jib carrying cradle carried on said turntable and pivotally mounted thereon at one end for movement in a vertical plane, jib elevating hydraulic jack means for adjusting said jib carrying cradle in :a vertical plane, a hollow shaft journalled in said jib caro associated between said hollow shaft and said jib carrying cradle, a jib member which is bifurcated at its outer end, said jib member being l co-axial with said hollow shaft and secured thereto at its inner end, a drill unit pivotally` -cradled in the bifurcated end of said jib member :for movementabout an axis normal to the axis of the jib member said pivot intersecting the axis =of the drill,` self feed and self retracting means associated with said drill unit, and drill unit angle adjusting means comprising a o rod member .mounted in said jib carrying cradle for lateral movement in relation thereto together with associated lateral motion means and a second rod member pivotally and flexibly secured to the upper -end of the latter and pivotally secured to said drill unit for rotational movement of the latter :about its pivoting axis.

6. In a coal or rock working machine the combination of a tracklaying vehicle having mounted thereon a turntable turnable about a vertical axis, means for adjusting said turntable, a jib carry- .ing cradle carried on said turntable and pivotally mounted thereon at one end formovement in a` vertical plane, jib elevating hydraulic jack means for adjusting said jib carrying cradle in a vertical plane, a hollow shaft journalled in said `jib carrying cradle for rotation about its own ted lateral motion means and a second` axis and movable with said J'ib carrying cradle, means for adjusting said hollow shaft about its own axis comprising a worm and Worm-wheel mechanism associated between said hollow shaft and said jib carrying cradle, a jib member which is biiurcated at its outer end, said jib member being co-aXial with said'hollow shaft and secured thereto at its inner end, a drill unit pivotally cradled in the bifurcated end of said jlb member for movement about an axisfnormal to the axis of the jib member said pivot intersecting the axis of the drill, self feed and self retracting means-associated with said Ydrill unit, and drill unit angle adjusting means comprising a rod member mounted in said jib carrying cradle for lateral movement in relation thereto together .with associated lateral motion means, a second rod member pivotally and exibly secured to the REFERENCES CITED The following references are of record in the le of this patent: i

UNITED STATES PATENTS Number Name Date 2,060,814 Lewis NOV. 17, 1936 2,415,205 Gartin Feb. 4, 1947 2,491,273 Lehner Dec. 13, 1949 2,500,932 Curtis et al Mar. 21, 1950