US2050982A - Power system for combined gathering and loading machines - Google Patents

Description

Aug. 11, 1936. M, R T EN 2,050,982

POWER SYSTEM FOR COMBINED GATHERING AND LOADING MACHINES Filed June 12, 1935 6 Sheets-Sheet 1 a a a INVENTOR vi-IINAR MARENTZEN,

ATTORNEY 6' E. M. ARENTZEN 2,050,932

POWER SYSTEM FOR COMBINED GATHERING AND LOADING MACHINES Filed June 12, 1955 6 Sheets-Sheet 2 I l I l I I l l l I :2 ATTORNEY Aug. 11, 1936. E. M. ARENTZEN POWER SYSTEM FOR COMBINED GATHERING AND LOADING MACHINES Filed June 12, 1935 e Sheets-Shet s W QR - INVENTOfi m Z Y T E N N E R e w A m fi Mm Aug. 11, 1936;

E. M. ARENTZEN POWER SYSTEM FOR COMBINED GATHERING AND LOADING MACHINES- Filed June 12, 1935- 6 Sheets-Sheet 4 1 H SQQO O. Q

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INVENTQ'R EINAF? MARENTZEN ATTORNEY Aug. 11, 1936. E. M. ARENTZEN 2,050,932

POWER SYSTEM FOR COMBINED GATHERING AND LOADING MACHINES Filed June 12. 1935 6 Sheets-Sheet 5 ARENTZEN,

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POWER SYSTEM FOR COMBINED GATHERING AND LOADING MACHINES Filed June 12, 1935 6 Sheets-Sheet 6 A F WN M mm MEWEWWE WWQIENNR INVENTO'R Emma NLARENTZEN ATTORNEY NEQE QPE 2am dictum A $3EBU=G kmuxm mac 298 :J W

7 a m m A A W m Ema h hl o uh wkuvgfflkkiw .qiwu m? w N m m CE: m m a n Ema 35mm mm 2E3 236 mmflikwhcu m uzfiuwfik me C with. GE... E=Z .wuzqmmm h3g0 mwwm m 1. l g H A w a H. N F A Q m a a A Nu-F whim :1L$ E EQEQ 1 52%? E. A @mohoi emu: mm A WKOPOE GZEUTCKQ Q TL a 1J1. 7 a N QGWR with QEQ N a 1 \h\ Q 4 L VO w E w A m Q Q N m .N N A WkEoS kwfiikmhtu to\ m macros zorruqmk k 7 G r Patented Aug. 1 1, 1936 POWER SYSTEM FOR COEBHNED GAMB- AND ILGADING momma Einar M. Arentzcn, Franklin, Pa, assignmto Joy Manufacturing Company,

poration oi Delaware Application June 12, 1935, Serial No. 26,182

11 Glaima.

of this type for use in the coal mining industry,

and which is adapted to travel upon the floor of a mine or other surface from which material is to be gathered; to gather said material as the machine travels and to convey and deliver same to a point rearwardly of. the machine. Such a machine, in order to attain a maximum of efficiency, utility, and practical accomplishment, must be supplied with an automotive, tractive mechanism, whereby the gathering head may be moved forwardly, maneuvered laterally in either direction, retracted from the material upon which it is operating. In case the coal or other material has been blasted or otherwise loosened, thus adapting it to feed by gravity to the gathering head, and when an obstruction or unwieldy mass of material is encountered, the tractive elements of the power system must be capable of being quickly stopped, reversed or swerved laterally into the most effective gathering position.

As an example of the state of the art which has thus fa: been attained in machines of this class, reference is made to U. S. Patent No. 1,619,268, dated March 1, 1927.

The zxachineto which this patent relates is equippwith one motor as its driving power for all the oerative sub-organizations, including the the gathering, and the conveying deid tractive devices being supplied with a c. ial gear and a brake mechanism whereby steering functions are accomplished.

the object of this invention to supply a stem for machines of this class whereby iacilityand speed of operation, increased a reduction of power requirement, and a wid ield of use, especially in thinner seams of coal, 2. attainable.

ticular construction and manner in which of these objects is attained will be pointed out in due order in the following speciflcation, and is fully illustrated in the accompanying drawings in which:

Fig. l is a schematic view of said power system.

Fig.2 is a plan view, which upon one side, shows one side of the gathering and conveying organization removed to illustrate the opposite side of the truck thereunder.

Fig. 3 is a side elevation of the adjacent side of Fig. 2.

Fi 4 is a transverse section through the gathering head at the point indicated by the line Iii- IV of Fig. 2, the gear-box which contains the elevator andgathering arm gears being shown in elevation upon the right hand side; said box and a portion of the gearing therein being shown in central, vertical section upon the left hand side of this view.

Fig. 5 is a right side view of the gathering apron with a portion of the corresponding gearbox shown in vertical section.

Fig. 6 is a vertical section on line VIVI of Fig. 1.

Fig. 7 is a. side elevation of the combined gear and sprocket which drives the caterpillar traction chain, and a half-section and half side view of the 15 tains the four-point, reversing, two-drum controllers relating to the two independently driven motors which drive the tractive' organizations respectively, a portion of the cover being removed to reveal underlying details to view; other parts of this figure are drawn in section to expose to view the two shafts whereby the drums of these 7 controllers are respectively operated.

Fig. 10 is a wiring diagram showing in detail 30 the wiring system for the four motors which constitute the power system of this invention.

Fig. 11 is a. symbolic wiring diagram oi the four-point, reversing, right hand, tractor-drum detail. 35

Fig. 12 is a symbolic, electrical wiring diagram of the head motors, which are adapted to series start and parallel run.

The conveyor shown in the drawings is clearly illustrated in U. 3. Patent No. 1,785,402; dated December 16, 1930.

The power system illustrated in said drawings embraces the details which are arranged andopcrate as follows: I

Referring to Fig. 1, the. right hand end of this 45 view corresponds to the rearward end of the machine; adjacent this rearward end is mounted a right hand motor I and a left hand motor 2, the axes of which are in alignment and-extend transversely of the chassis in the corresponding side 50 members of which they are respectively mounted and rigidly carried; these motors are equipped with self-contained speed-reducing gearing, and are adapted, by means of suitable, individual combined switch and drum-controllers to be int5 dependently operated in either the same or in opposite directions. The power-delivery shaft 3 of motor I extends outwardly from the outer end of the motor casing and has rigidly aflixed thereto a pinion 4, adapted to mesh with and to directly drive a gear-sprocket wheel 5, which in turn serves as a sprocket to drive a caterpillar tractive mechanism or chain 6.

In like manner, the outer end I of the powerdelivery shaft of motor 2 extends outwardly from the casing of this motor and has rigidly afllxed thereto a pinion 8 arranged in mesh with a gear-sprocket wheel 9, which, in turn engages with and drives the caterpillar chain It. In Fig. 1 of' the drawings, the outer end of the motor casing is shown in central, longitudinal section for the purpose of exposing the speed-reducing gearing to view. Inasmuch as such self contained speed-reducing gearing is not new, and is well known to electrical engineers, a description of the details thereof is deemed unnecessary.

Said gear-sprocket wheels are each carried by their respective side members H and [2 of the chassis', as clearly shown in Fig. 6. From these II are employed; these motors are arranged in,

parallel relation, their axes extending longitudinally of the chassis and transversely to, the axes of said traction motors I and 2, one at each side v of the gathering head; they are interconnected for joint operation in a manner which will pres ently be set forth, so that they operate in coordinated unisoni because of this characteristic, corresponding members of this power organization will be referred to -by identical reference letters.

The forward end of the power-delivery shaft l8,-see Fig. 5,-extends through the motor casing and is connected by means of a suitable coupling I! to a bevel pinion 2!! which meshes with and drives a bevel gear 2|, to the upwardly-extending end of-a stubshaft 22 of which, is operatively, rigidly mounted a crank-disk 23; this disk is equipped with an upwardly-extending crank pin 24 for engagement with and actuation of a gathering arm 25. Said gear and pinion are suitably enclosed in a gear casing 26, in which is mounted a second bevel pinion 21 that meshes with and is driven by said gear 2|; the stub shaft 28 of this pinion,see Fig. 4,-is disposed inwardly toward the center-of the machine at an angle of degrees to the axis of pinion. 20, and

operatively engages a;;transversely-extending hol-- low shaft 23-which formed integrally therewith a sprocket 30,."which is adapted to drive the conveyor chain 3| and the thereto attached flights 32,see Fig. 1; this conveyor chainence will now be made to the electrical motors and the method and system of their operation and control.

- to turn pivotaflly, the pivotal point being inter- All four of the motors employed are substantially identical in construction and power rating, and for the purposes of this specification it may be stated by way of illustration, that a' 250 volt, direct current is used, which is supplied by a 5 trailing cable 32, connected to and leading from any suitable source of current.

The service end of said trailing cable 32 enters the casing 33 of a simple drum switch which is adapted by means of a starting switch 35 to so control the current passing therefrom, through the conductors 34, 34 to the gathering head motors l1, II, that series starting of said motors is caused and thereafter parallel operation of the motors takes up their load operation.

A conductor 36 leads from said casing 33 to the casing 31*of a four-point, reversing drum controller of well known construction, in which said current is controlled and through which it passes as indicated in the wiring diagrams of 20 Figs. 8, 10 and 11; from said casing, a conductor 38,-see Fig. 1,leads to each traction motor I and 2.

Referring especially to Fig. 9 of the drawings, it isshown that the controller drums R, L, are selectively operable at will, in either direction, also separately, either inthe same direction orreverselyby means of the levers R, L', these levers being shown in Figs. 1, 3, and 6.

Within the off-set chamber 39 of the casing 31 are mounted the sprockets R", L"; sprocket R is mounted upon a rotative hollow shaft 40,

which extends transversely of the chassis and axially through the axle ll of the sprocket 5; to the outer end of this shaft is actuatively secured said lever R; the sprocket L is rigidly attached to the solid shaft 42 which extends.

through said hollow shaft 40, and is equipped at its outer projecting end with an' actuativelyattached lever L. Said levers and the switch 35 are in such proximity to each other as to be readily, simultaneously manipulated by the operator of the machine when standing at an intermediate point.

Referring to Fig. 3 or 6, when said levers L and R are in vertical position, the current is shut off; when they are actuated rearwardly, the machine runs in a corresponding direction; when they are actuated into their forward position, the machine is propelled in the forward direction;

as previously stated, the levers may be moved in opposite directions-which is termed the per cent steering direction, and the machine is caused mediate the center point, both laterally and 55 longitudinally of the caterpillar treads, and when either lever ,is moved (singly) in either direction,

a, 50 per cent steerage results.

The electrical connections and circuits are so arranged in this traction motor system that the motors may be operated either in unison, as when the tractive elements are prop'elling the machine either directly ahead or rearwardly; they may be operated separatel'y a's when the machine is being turned by one tractive element, the

other element being the-pivotal point, one twotive element may be operated in one direction, a and the other element reversely thereto, as when the inachine is being thus turned and the pivotal point is intermediate said elements; in the 70 dirigible operation of theloader, as when laterally directing the gathering head to the .right or to the left, into actuative gathering relation to the material being gathered, the motors and their respective tractive organization may be selec- 75 tively operated in either direction-whereby the maneuvering of the gathering arms into gathering relation to said material is greatly facilitated. Said facilitation is due to the fact that, if the gathering head is to be moved to the right, this may be done by operating either the right hand tractive equipment in the rearward direction, or the left hand tractive equipment in the forward 'direction, inwhich case one of said organizations will be inactive, and the gathering head in the respective cases will'be caused to occupy a different position relative to the material to be gathered. Dirigibillty of the loader when traveling about the mine; from place to place,a function which is aptly termed flitting,is accomplished with a high degree of facility, flexibility, and accuracy as to the objective positioning point.

' Having pointed out the mode of operation of my improved power system, it is in order to state the novel and improved advantages attained thereby, which are:

1. Saving of both time and power and greater ease and accuracy of placement in negotiating the gathering head of the machine both laterally and longitudinally into gathering relation to the material to be gathered.

2. The elimination of difierential gearing and its necessarily associated brake accompaniment, heretofore used in causing the steering of automotive loading machines, and to secure a consequentmaterial reduction of power in the performance of this function.

3. The production of a much lower loading machine by the use of aplui'allty of small motors,

.and the consequent possibility of operating in thinner seams of coal from which mechanical loading has heretofore been excluded. I

4. A decided simplification of transmissive equipment and reduction of occupied space by the incorporation of speed-reducing and transmissive gears within the casing of the motor.

5. A greater degree of accessibility, especially to the gathering motors, by their transferral from within the frame of the chassis to the outer, lateral limits of the gathering head.

6. A greater simplicity, accessibility, ease and certainty of manipulation of the control levers.

7. A much more uniform distribution of operative strains throughout the whole structure of the machine, which is attained through the symmetrical arrangement of the four motors with respect to the fore and aft axis of the machine, and the fact that all of said motors are disposed below the line of travel of the conveyor flight.

I claim the following: i e

i 1. In a combined gathering and conveying machine of the type which includes a chassis frame, a. tractive mechanism of the caterpillar" type on each side thereof including a driving procket in direct-driving relation with the chain thereof, a conveyor mounted upon said chassis frame and extending rearwardly to provide a delivery section; and a gathering organization arranged at each side of and adapted to move material onto the forward end of said conveyor, each -88thering organization including a driving gear therefor and said conveyorhaving a driving member driven jointly by the driving gears of said gathering organizations, the combination therewith of a power system for said combined gathering and conveying machine whose motive mechanism is composed of four electrical motor units, two 'of said motor units being disposed adjacent and directly connected to said driving.

sprockets and two of said motor units being disposed adjacent and directly connected to the driving gears of said gathering organizations.

2. A combined gathering and conveying machine according to claim 1 wherein the four motor units are symmetrically arranged with respect to the fore and aft axis of the machine.

3. A combined gathering and conveying ma-.

chine according to claim 1 wherein each of said four motor units includes a driving shaft and a gear mounted thereon coaxially with the motor and in mesh with a drivingsprocket of said tractive mechanisms or a driving gear of said gathering organizations.

4. A combined gathering and conveying machine according to claim 1 wherein each of said four motor units is a self contained unit composed of a. motor and a train of reducing gears contained within a common casing.

5. A combined gathering and conveying machine according to claim 1 wherein .all of said four .motor units are alike in structure and size.

6. A combined gathering and conveying machine according toclaim 1 wherein the two mo- '7. A combined gathering and conveying machine according to claim 1 wherein the two motor units connected to said driving sprockets are aligned horizontally and the two motor units connected to said driving gears for the gathering organizations have their axis disposed atright angles to said first named motors.

8. A combined gathering and conveying machine according to claim 1 wherein all four motor units are disposed below the level of said conveyor.

9. A combined gathering and conveying machine according to claim 1 wherein the two motor units connected to said driving sprockets are horizontally aligned and disposed below the level of said conveyor and the-two motor units con-- nected to said driving gears for the gathering organizations have their axis at right angles to said first named-motors and disposed below the level of said-conveyor.

10. A. combined gathering and conveying mative control mechanism for rotating either or both of said motors in forward-or reverse directions, or stopping the same.

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