US2006399A - Mining machine - Google Patents

Description

July 2, 1935. F, A. LINDGREN MINING MACHINE Filed Nov. 18, 1933 5 Sheets-Sheet l July 2, 1935. A UNDGREN 2,006,399

MINING MACHINE Filed Nov. 18, 1935 5 Sheets-Sheet 2 AHifi Patented July v2, 1935 l'MINING :MAcniNE Frank A.. Lindgren, WesternfSprings,Ill.,assignor to 'Goodman Manufae tu`ri`ng i Company, Chi

cago, Ill., a corporation of Illinois `Application November 18:11933,ISerial Noif6985599 6` Claims.

This invention relates to improvements in .mining machines. and Imore' particularly to. mining machines of .the track mounted type adapted; in particular, to cut arcuate kerfs in entriesornarf 5 :row rooms .above the level ofthe. mine bottom, and'A has among otherobjectsto vprovide a new ,and Aimproved mining-machine of the class. de- .:scribed constructed with a view towards, compactness and efficiency. of design, utmost efficiency `and simplicity: of operation, particularly arranged forY travelingiand cutting where the track I gauge is narrow,v where the radius of .the curves of the tracks is relatively short, and where the :coal seams are-,of arelatively steep pitch.

fMy invention may bei more clearly Vunderstood vwith reference to the accompanying ydrawings in which: l Y' Figure.' 1 is a top-plan viewfof one embodiment of my inventionwith parts broken awayand in sectionl to more' clearly -show the detailstthereof; FigureZ- is-a side elevationfof the device shown vin `Figure l, lwith the cutting mechanismshown l in substantially longitudinal section;

-Figure l3 is' an "enlarged partial i fragmentary '.251 plan view of the rearward portion :of the device 'shown in Figure 1, with parts broken away.- and rin section to more clearly show the details `of the f i feed mechanism; l

` Figure 4' is y `an enlargedA side'Y elevation of the f. device shown in Figure `1, with-parts broken away and in section to show certain details .of Ithe feed mechanism,v not shown in FigureS;

'Figure 5 is a transverselsectional vewfofy the rearward portion of lthe device shownin` Figure 1, showing certain details of the. feed. and truck driving mechanism,v notshown in vFigures 3 vIandli; I

Figure-'6 is an enlarged.` detail' view showing fthe details `of lthe means for controlling theop- =eration of one of the feed '.drums; and

vFigure'l is-a'diagrammatic view showing the method .employed for controlling the movement of vthemachine `along a'relatively steep grade. Like reference characters refertoilike `parts "throughoutthe various gures l 'Referring now. in'` particular tothe drawings iandone embodiment of my invention, a-truck` I0 *is providedwhich isv mounted on track wheelsl I I, f IIfand axles I2, I2. vTnetruck IUis soarranged thatitslwheel 'base is relatively short for/the 1 negotiation of sharp turns-and is aJsoso-arf ranged that itvmay 'bereadily adapted. for nar- ;roW-'track gauges.

"Agcutting.l element I3 is mounted on theitruck 'ffl-0f and lfprojects forwardlyiand' .rearwardly there- :from,;and:.-.includes a longitudinally disposed .fino- :tori I4,.;a fcutter. frame section ll 6 disposedeffor- :wardly oand .securedto `itheiorward end of vsaid .motor I; and a t feedingsectionj: I 1 A. disposed ,rear- -Iwardlyl ofiandzsecured to therearwardfend of f5 .saidV motor.r I I l'The cutter frame section'- IBprovides a pivotal support .forlacutter bar I8;.having a cutterfchain yI9 'movablel'thereabout The cutter barl I8is -mounted on a. cutter-bar. SuppOrtingfmemberf. 20, .10 .-iwhich cutter '.bar supporting member in turn .is I Ipivotally:mounted-in` the cutter frame section. :I 6 :.for pivotalfmovement. with respect theretoabout vla, verticaljaxisin. a` manner .which will not ,hereini besdescribedrin detail sinceiIit is no Aportion .of-5.15

my present invention. I I

I A Ipinion 2| isnsecured -to theforwardfendpf .the shaft .-for the motory I4 and lmeshesxwithand drives a spurgeargfZZ- on fthefrearward endbf a y ;,;shaft'-;23. `A bevel pinionf24 .is freely mounted'onczo fthe-forward end ofthefshaft. 23` and .isselectively I .connectible therewithfbyfmeans ofxa clutch mem- 'I1 ber;25.1in .1an usual Imanner. .The bevelxpinionjZ y.meshesf-.withfand drivespa. bevel geareZ'l secured ato the IIupper, end of aI vertical shaftnf-ZB. which 25 sha-ft.' is journaled inthe cutter f frame section I 6 i by meansofballzbearings in,af.usual manner. JA

. sprocket29riis 'keyed to Ithelowerend yof thefvertical shaft 28 and meshes with and drives thecut- I ter chain: I 9.7i in` a closed. orbital path Iabout. the .n30

ccutterbarII.

Referringinowiinr particular toI the 1 details: of ,thetfeedingvsection' I 'l Aand l.the meansxfor4 swing- .:Iing :the cutter "Ibar I I8 about .the Aaxis *IofIz-th'e '..sprocket 29 1andffeeding said cutter barfin..y anl35 arcuate:l pathiacross .the coal face,..a .pair offeed .'I' drums 30;*3,.hereinshown asbeing coaxiallyar- .I rranged, are .provided f'IThe f feedv .drums y, 30,1 IJ

are arrangedadjacent opposite sidesofthe -ieed-v f ing- 4sectiorr rI l and :motor I 4 and -are..j.ournaled.s40 i on: eccentric; 'members-p 3 I, 13 I The members 3 I, 43l in turn are -journaled-eccentrically of i .their .centers on .sleeves 32, I 32, g which'. sleeves infturn are freely mounted onr ,transversely extending Ashafts., 33, 33. n i

Aflangek extends inwardly fromeach feed I, drum 30y and has `an internalgear 36, keyed Ito -.the .inner peripheryy thereof. A Ibrake band f 31 is adapted toengage the outer periphery of the "'ange 35 vfor holdngthefeed drum 30'fro1`n rota-@P50 tion when desired.

*Pinions 39," 39r on theouterends of coaxiallyarrangedhorizontal shafts-40,10 are-adapted vto i meshfwithfanddrive the internal gearsA 36, 36. '1i-The pinionsV 3952-39 f are engaged 'Y witlif-orA disen-i 5 gaged from the internal gears 36,- 36 by means of the eccentric members 3|, 3|. A member 4| having arms 42` extending outwardly therefrom is secured to the outer end of each shaft 33. The arms 42 of each member 4| are adapted to engage suitable grooves formed in the outer face of each member 3| so that rotation of either of the shafts 33 will cause pivotal movement of the respective eccentric member 3| for shifting the internal gear 36 into engagement with or disengagement from the respective pinion 39. An operating lever 43 is keyed to the inner end of each shaft 33 for pivotally moving said shafts and moving the drums 36 about axes eccentric of their center for selectively connecting thev feed dl'ums 30, 30 with the motor |4. The operating levers 43, 43 may be locked to hold the internal gears 36, 36 in mesh with or disengagement from the pinions 39, 39 by means of any suitable arrangement (not shown).

Suitable flexible feeding members, such as flexible cables 44, 44 are adapted to be wound on the feed drums 3U, 39 and their free ends are adapted to be connectible with a connecting member y45 secured to and. extending upwardly from the cutter bar support member 29 (see Figure 1); It is thus apparent that when one feed drum30 or the other is driven by power from the motor |4, that the cutter bar IB may be pivotally moved in one direction or another for feeding the cutter bar |8 in an arcuate path across the front of-.the truck I0. Either of the feed. drums 30, 3D may be power driven at the same time in a manner which will hereinafter more fully appear, or one of said feed drums may be power driven while the other drum may be retarded by means of `the brake band 31 under control of theloperator.

Referring now in particular to the means for independently driving the feed drums 30, 30 from the motor I4, an armature pinion 41 is keyed on vthe rearward end of the shaft for the motor |4. yThe armature pinion 41 meshes with and drives a spur gear 48 secured to the forward end of a longitudinally extending shaft 49. The longitudinally extending shaft 49 is journaled` in a bearing support member 59 on suitable ball bearings, which bearing support member 561s in turn detachably secured to the frame for the feeding section' |1.

A worm is formed integral with the longitudinally extending shaft 49 intermediate its supporting bearings'in the bearing support-member `5|) andmeshes with and drives a worm gear 53 secured .to a sleeve 54. The sleeve 54 is journaled on:its .outer periphery in suitable ball bearings held in the lower portion of the feeding section |1.`

in suitable bearing supports in a usual manner and has spur gears 55, 55 formed `integral with its outer ends. The spur gears 55, 55 form drivingmembers or sun gears for planetary geared reduction devices 56, 56 arranged coaxially-with the shafts 40, 48 for driving said shafts and the pinions 39, 39 at either high or low frictionally controlled speeds independently of each other.

Inasmuch as the construction of the twoy planetary gear reduction devices Y56, 56 is similar, the

6|, which spider in turn is keyed to the shaft 40 for driving said shaft.

The cage 59 is provided with a flange 63, vwhich extends outwardly from its inner side and which is adapted to be engaged by a friction band 64 for holding said cage from rotation or permitting said cage to rotate lunder the control of said friction band. An internal gear 65 is journaled on the inner periphery of the flange 63 of the cage 59 for rotation with respect thereto and meshes with the planetary pinions 51, 51. A flange 66 in formed integral with the internal gear 65 and is disposed adjacent the flange 63 of the cage 59 and its inner periphery encases the outer periphery of the internal gear 69. A friction band 61 surrounds and engages the flange 66 for holding the internal gear 65 from rotation or permitting said internal gear to rotate under the control of friction.

The friction bands 64 and 61 are controlled by means of a hand wheel 68 disposed adjacent the rearward end of the feeding section I1 and keyed on the rearward end of a shaft 69 journaled in Vthe feeding section |1, and extending angularly upwardly from said hand Wheel. An operating member 16 is threaded on the shaft 69 for translational movement with respect to the hand wheel 69 upon rotation of said hand wheel. The operating member is provided with voppositely extending lugs 1| and 12. The lug 1|` is adapted to engage a lug 13 extending upwardly from one end of the friction band 64, while the lug 12 is adapted to engage a lug 14 extending upwardly from one end of the friction band 61. `Lugs and 16 extend upwardly from the opposite ends of the friction bands 64 and 61 respectively, and are adapted to respectively engage suitable stops formed integral with and extending, downwardly from the top cover of the feeding section |1. t

It should be noted with reference to Figures 3 and 6 that the lugs 1| and 12 extend outwardly lin opposite directions from opposite ends of the member 10 so that when the hand Wheel 69 is rotated in one direction, the friction band 64 may be engaged with the flange 63 for holding the cage 59 from rotation while the friction band i 61 is permitted to be disengaged from the flange 66 formed integral with the internal gear 65, and when rotated in an opposite direction the internal gear 65 may be heldr from rotation permitting the cage 59 tobefree to rotate.

When the cage 59 is held from rotation by the friction band 64, the internal gear 60 ywill be driven through the sun gear 55, planetary pinions 51 and planetary pinions 62, which will rota-te the shaft 40 at a relatively high rate of speed. When the internal gear 65 is held from rotation by the friction band61 and the cage 59 is free to rotate, the internal gear 68 will be driven through the spur gear 55 andplanetary pinions 51 and |52,V moving in an orbital path about the internal gear 65, at a relatively slow rate of speed. It may thus be seen that each ofA the feed drums 30, 30 may beselectively driven from` the motor- |5 at either a high or low frictionally controlled speed,l controlled by the hand wheels 68, 68. During normal operation it is only necessary to turn the hand wheels 68, 68 in one direction or another to control the speed of rotation of the feed drums 36, 30.

permit said feed drums to freely rotate, independently of the planetary gear reduction devices 56, 56. While the planetary ,gear reduction devices- When desired, however, the .feed drumsf' 30, 39 may be disengaged from the drivelpinions `39, 39 byr means of theoperating levers 43, 43 vto formed integral with la l tionf, of 1 the lofi said fee'dxdrums as .1afiretardingsfdevice,L it is preferable'vf, to'v useI ,thezzbrakelgbandsi 31 tOJr'etard rotation: ofthe desi-red feed adrum, Asaid feed/drum rlbeingldisconnected'. fromtherespective:planetary iageared reductionl device .56,1when beingsol re- 4tarded by` means of the respectiveioperating'lever Yin* order. to` relieve alli-internal strains from said planetary rgear reduction devices.` I

' .Witl'rfreference: vnow* inr particular tosthe ,truck cdrivean'd the .auxiliary-` meansk for .propelling the f y truck when moving orcutting-...along a pitching f seam, a windingv .drum1'19 is journaled `on -a shaft @80 -supportedcatlits endsin aportion 8| de :wpendingzfrom'the rearward portionbf the feedling: sectionk i simeshed with 'a vspur .pinion 84 freelyffmounted Ona .transverselyextending shaft .85 journaled e fthe cutter barhas been sumped into the'coal, the machine isheld at a stationary position with l:atits ends in the depending portion 8| of the afeeding'sectionvl'l; Ahub'til of the spur pinion i184' vis journaled in thefdepending portion 8| and has clutch jaws B1, 81 extending from-itsiouter -end,rada1')tedfv to :beengaged by clutch-jaws 88 clutch .member eredon the transversely extending shaft85 for selectively driving said` spur pinion and the wind- .ing drum 19 fromusaidshaft;The transversely extending shaft'i in turn is drivenfrom the Y shaft 40 von the left hand :side ofthe machine,

-when looking towards thecutter barr 8, by means said shaft, an idler l of a spurgear 9D keyed lon f. gear `9| driven therefrom and a spur gear `92 `meshing with said idler gear andv keyed on saidy shaft. Thus the winding i, yfrom oney planetary gear transversely extendingy drumv 19 may be driven reductiondevice 56`at either a high or low fricvtionally controlled speed simultaneously'hor in-V depen'dently'of rotation of the feeddrunisS, 3m

A sproclret93 is-freelymounted ont the Aright *hand outer end ofthe -transversely'fextending f shaft 85j `'lhesprocket 93f-isl`-j`ournaledfon-its 'hub i.in-- the- 'depending portion 8 l'iand` its-inner y end has Vclutch jawsf94 formed fintegral'ftherea "with, which are adaptedto beiengaged by clutch rmounted on wheels and axles,

r bar proj ecting 'jaws' 95 .formed tintegral f with a clutch member w96.` feathered on the transversely extending shaft 85 for selectively driving said sprocketfrom/said shaft. vThe)spirockeif 93is operatively connected with the rearward truck wheels by means of a chain and sprocket drive generally indicated by reference character 91, while the for- Ward and rearward truck wheels are connected together by means of a chain and sprocket drive, generally indicated by reference character 98. The truck may thus be driven at either a high or low frictionally controlledspeed independently of rotation of the winding drum 19 and independently of rotation of the feed drums 39, 3D. i c 'I'he winding drum 'I9 is adapted to have a flexible feeding member such as a flexible cable 99 securedthereto at one of its ends. The flexible cable 99 may extend rearwardly from thev 1 to- :be lowered vdown said` winding drum, "winding drum :being controlledA :byV the: planetary ygear'reductiondevice 5.6. f

rA spur gear'nissecured to one of thefflangesof thewinding fdrum 19rand .is

vtuated eitherr by the winding rdrum Iformin which the .be embodiedl wish vposed rearwardly of guidel sheaves IDI, 1|0| to a jack. |02 interposed incline, or for. permitting-,the fmining machine 1an incline under control of .thefspeed of rotation of said Duringv the cuttinguoperation the, mining vmal 1 l0 cliiner-is usually held in a stationary position with respect to the track by means of ysuitable jacksv interposed between the machine. .and the rmine roof orrmine entirely'. by arcuate `i8. In casesvwhere rnarrovvthe cutterbar may' be sumped intov the bottom, the lrerf beingfcut the entries areY relatively coal by. movement of the truckalong a track .ac-

19, or'both theftrack-wheels and'saidwinding drum.v *After* rofla conflpactforrn and yet loe eflicient andflexible in operation; that a new and improved means movement of the cutter bar 1 that a new and` improved-Q5 isprovided foriindependently driving` the i'eedf'130 drums which means alsoservestoeifect independent operation ofy a third drum andthe wheels for supporting the truck, which drum and'wheels are driven at aV speed similar to the speed of `rotation of the feeding drums,l and that? the fdevice `of my invention is so `arranged that itis particularly adapted for use inmines'hav- 4,ing pitching seams and relatively steep grades.

While I have herein shown and described .one

it to be understood that I dognot desire to be llimited .to the precise` details orform of-construction shown herein, excepting asy itmay be limited in the appended claims.

1; I, claim as my invention: Y i

l. In a track-mounted miningmachine, a truck a motor, a cutter forwardly of said truck `and mounted for pivotal'movement abouta vertical f kdrums disposed rearwardly of and at opposite sides of said motor and a third feed drumdissaid rst-mentioned feed drums and selectively driven from said shaft.

device of rny-'invention mayz40 ,axis. disposed forwardly of said truck, means`=50 2. In a track-mountedv mining machine, a truck mounted on wheels and axles, a motor, a cutter l bar projecting forwardly of said truck and mounted for pivotal movement about a vertical axis disposed forwardly of said truck, means driven by said motor for driving said truckincluding a transversely arranged shaft driven from said motor at either a high or low speed and a selective connection between saidshaft and truck Wheels, and feeding mechanism therefor comprising a pair of coaxially arranged feed drums disposed rearwardly of and at opposite sides of said motor, and a third drum disposed rearwardly of and between said iirst-mentioned drums and selectively driven from said shaft independently of said truck driving mechanism.

fio

- ed for `pivotal 3. In a track-mounted mining machine, a truck l mounted on wheels and axles, a motor, a cutter bar projecting forwardly of said truck and mountmovement about a vertical axis disposed forwardly of said truck, means driven by said motor for driving said truck including a shaft driven by the rearward end of said motor and arranged for `rotation about a transverse axis, a shaft parallel thereto and driven thereby and a selective connection between said last-named shaft and truck wheels, and feeding mechanism therefor including a pair of coaxially arranged feed drums disposed rearwardly of and at opposite sides of said motor, each of said feed drums having a flexible feeding member having operative connection with-said cutter bar for swinging said cutter bar in opposite directions without reversal of said motor, and a third winding drum disposed rearwardly of and between saidfirstmentioned drums and selectively driven from said last-named shaft independently of said truck driving mechanism for moving said machine along the track at a high or low speed independently of or in cooperation with said truck driving mechanism.

4. In a trackmounted mining machine, a truck mounted on wheels and axles, a motor, a cutter bar projecting forwardly of said truck and mounted for pivotal movement about a vertical axis disposed forwardly of said truck, means driven by said motor for driving said truck including a planetary geared reduction device, a shaft driven thereby and a selective connection between said shaft and truck wheels, feeding mechanism therefor comprising a pair of feed drums disposed rearwardly of and at opposite sides of said motor and a third feed drum disposed rearwardly of and beneath the axis of rotation of said first-mentioned feed drums, and means for driving said feed drums from the rearward end of said motor `comprising a planetary geared reduction device coaxial with said first-mentioned planetary, a selective connection from said planetary to one of saidffeed drums, a selective connection from said first-mentioned planetary to said other feed drum, and a selective connection from said shaft to said third feed drum.

'l 5. In` an apparatus of the class described, a track-mounted truck, `a mining machine thereon including a motor, a cutter bar disposed forwardly motor, a planetary geared reduction device arranged on each side thereof and driven thereby, selective drive connections from said planetaries to said drums including a pair of coaxially arranged transverse sh'afts, a third winding drum rotatable about a transverse axis disposed rear-` wardly of the axis of rotation of said shafts, truck driving mechanism, and means for selectively driving said third drum and truck driving-mechanism from one of said shafts including a parallel shaft driven by one of said coaxial shafts, a selective connection from said parallel shaft to said winding drum and another selective connection from said parallel shaft to said truck driving mechanism.

6. In a track mounted mining machine, a truck mounted on wheels and axles, a motor, a plvoted cutter bar projecting forwardly of said truck, a pair of feed drums disposed rearwardly of said motor adjacent opposite sides thereof for rotation about coaxial transverse axes, means driven fromsaid motor for independently driving said feed drums including a pair of independently operable coaxial planetary gear reduction devices, said planetary gear reduction devices being arranged for rotation about a horizontal axis extending transversely of said motor and each of `said planetary gear vreduction devices having drive connection with one of said feed drums, a third winding drum for driving said truck along the mine track, disposed rearwardly of said feed drums forrotation about an axis disposed parallel to .theaxis of rotation of said feed drums, a shaft disposed beneath said feed drums and being driv- .en from one of said planetary geared reduction devices, a selective drive connection from said shaft to ksaid third winding drum, and another selective drive connection from said shaft to said truck wheels. y

FRANK A. LINDGREN.

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