US1917508A - Earth discharging mechanism for excavators - Google Patents

Description

July 11, 1933. N DE WIND EARTH DISCHARGING MECHANISM FOR EXCAVATORS Filed March 16, 1931 2 Sheets-Sheet l July 11, 1933. N` DE MND 1,917,508

EARTH DISCHARGING MECHANISM lFOR EXCAVATORS Filed March 15, 193.1 ZSheetS-Sheet 2 Patented July 11, 1933 unirse srA'riEs earner orifice NRYIAN EE WXND, OF NEWTON, G/VA, ASSIQCTNOR TO THE PARSONS COMPANY, OF

NEWTQN, QVA, A CORPORATION- An object of my invention is to provide an earth discharging mechanism for excavators which eliminates a good many objections to the present day constructions in which ditcher buckets have movable bottoms and other clevices provided for cleaning the earth out of the buckets, the parts of my mechanism being comparatively simple, durable and inexpensive from a. manufacturing standpoint.

A further object is to provide an earth discharging mechanism which eliminates the provision ot sides on ditcherbuckets, thus reducing` the numb-er of surfaces to which the earth might stick.Y Y

More particularly it `is my object to provide an earth discharging mechanism consisting of a conveyor movable at the-same speed as an excavator mechanism such as an excavator' chain which has digging elem-ents and earth carrying means thereon whether separate or combined. the conveyor being mounted adjacent the earth carriers andthe parts being inclined so that the earth will shift by gravity trom the earth carriers'to the conveyor and eventually be carried by the conveyor to a discharge point.

A turtherobject is toV provide on an excavator having a digging' boom and an excavator chain with earth carriers thereon. a conveyor for receiving' earth from the earth carrier of the chain. the lower end ot the conveyor being located adjacent the ground and a guard shoe for bridging' the `@gap between the conveyor and the ground.

Still a further object is to provide side members on the 2g'uard shoe between which the excavator chain and the earth carrying means thereon, is movable.

lith these and other objects in view my invention consists in the construction. arrangementand combination ot the various parts of my device. whereby the objects contemplated are attained, as hereinafter more fully set forth. pointed out in my claims, and'illustrated in the accompanying drawings, in which:

Figure 1 is a. side elevation of an earth discharging' mechanism for excavators embodying my invention.

Figure 2 is a sectional plan view on the line EARTH nrsonanerne Manganism.' son nxcAvAToRs Application led March 2.6, 15331. Serial No. 523,029.

2 2 of Figure l illustrating the relationship of the excavator chain and earth carrying means thereon, the earth receiving,l conveyer and the guard shoe.

Figure 3 is a vertical, central sectional View 55- through the earth receiving conveyer and the guard' shoe.y

Figure4 is an enlarged, vertical, sectional view of a portion of Figure l showing the operation of the parts.

Figure 5 is a diagrammatic side elevationr showing' the boom adjusted'slightly away from the conveyer and illustrating hovv sag in the excavator chain will to some extent keep the earth carriers of the excavator chain 65 against the earth receiving' conveyer.

`'Figure 6 is a diagrammatic side velevation showi n a modified form ot construction. y

Figure 7 shows a modiiied form of con`- struction in side-*elevation in which the earth 70 receiving conveyer is provided with sides rather than being of troug'hed type; and

Figure 8 is asectional View on the line S-S of Figure 7.

On the accompanying drawings I have 75 used thereference numeral 10 to indicate generally a base tramefof an excavator or ditcher A. The base frame l0 is supported by wheels 14 and caterpillar treadsl. Amotor 18'is mounted. on the trame l0 for propelling' the 80 excavator A and driving the operating mechanism thereof. A transmission casing is indicated at 20. l

An upper trame 22 is provided for supporting1 the parts ot the excavator. A boom B 85 is mounted on the frame lO in any suitable manner.

A pair ot excavator chain drive sprockets w 24 are secured to a drive shatt'26. The drive shaft 26 is journalled in bearings 28 on the 90 upper trame 22. Excavator chain idlers .30 are journalled on the lower end of the boom B. Excavator `chains 32 extend around the sprockets 24 and the idlers 80.

The sprockets 24 are driven by a Vdrive 95 sprocket 34 and a chainBG from a sprocket pinion 38. -The sprocket pinnion 38 is mounted on a drive sh aft 40 ot the transmission 20.

The excavator' chains 32 support tooth-like dive/'ger elements 42 of ordinaryconstruction 100 and earth carrying members C. The earth carrying members C each comprise a bottom member ett and a pair of back members 46 and 48, but preferably do not have any side members.

An earth receiving conveyer belt 50 is provided for travelingadjacent the youter edges of the earth carrier bottom members 44 and is supported on a drive drum 52 and idler drums 54, 56 and 56. rlhe drums 52, 54, 56 and 58 are suitably liournalled'with respect to the frames l and 22 b v means of brackets as clearly shown in Figure l of the drawings.

rihe conveyer' belt 50 may be driven by means of the drum 52. The drum 52 is secured to a-drum shaft'60 to which a drive sprocket 62 is also secured. '.The chain 36 extendsunder the sprocket 62, after leaving the sprocket pinion 38 and before extending over the-sprocket VThe size of the sprock-V .It will be noted `thatfthere is a space bei tween the lower idler drum and the ground surface. 64. A For bridging'this space I preferably provide-a guard shoe D. The guard shoe D comprises aguard plate 66, supporting arms 68 and side plates 70. 'The supporting arms 66 are providedwith hubs 72 journalled on a pivotshaft .74 which is-supported by the frame l0. The guard'shoe D. when pivoted in this manner, may swingup and down depei'idingon the ground surface between the wheels i4: as the excavator travels. A stop bar 6 may be provided for limiting the movement of the guard -shoe 66 tow-ard the excavator chain162.v

For receiving earth from the earth receiving conveyer belt 50 and disposing of it, a chute 76 may be-provided for discharging its contents onto a transverse belt 80. The conveyer belty SO'discharges the earth at the side of the eXcavatorA. The earth receiving conveyer belt 50 will function even though the earth carriers C are not in Contact therewith. Even when the boom -B is adjust-ed 'slightly backward from the position shown in Figure 1 to the position showndiagrammatically in Figure 5.l there will be sufficient sag in the excavator' chain to cause-it to bow toward the belt 50 as illustrated and earth is'discharged therefrom onto the conveyer. 'Vith the boom adjusted still further rearwardly, space would Vbe left .between the earth carriers and the conveyer beltinwhich earth might accinnulate, but wouldbe picked up by the carriers and deposited on the belt Vas the excavator advances'y during the operation of digging a ditch.

As showninFigui-e 6 of the drawings, instead of providing` an inverted V formation for the conveyer belt 50, the idler 'drum 56 vcupped or troughed as in Figures l, 2, o

may be eliminated so that the contents from the belt 50 will discharge over the drum 52 and into a chute 82 and onto a transverse conveyor 84.

In this ligure the boom B is illustrated as having extensions 100 and 102 for carrying the conveyer and the guard shoe D.

rhus the earth receiving conveyer and the guard shoe may be adjusted siniultaneously with the adjustment of the boom if the parts are arranged as illustrated in this iigure. In Figure 7, the conveyer is not and et, but is of flattype as best shown in Figure 6. Side members 104 are provided to form a conveyer trough in conjunction with theV belt 50 when its formation is flat.

Pract/cal operai/0n uiggingthe ditch indicated at 88. The scari- -lieu and loosened vearth indicated' ati-90 is picked up by the earth carriers Gand-.retained thereon by the sides of the ditch 88, the bottomV members Liet and the back members 46and the front wall 92 of the ditch.

'Yhen the carriers C leavethe ditclrtlie earth is retained thereon by the'guard plate 66 and-the side plates -70 of the guard shoe D in place ofthe front wall-192 andfthe sides of the ditch S8. v

fter the earth carriers C leave the guard plate 66 they'contact-with the earth receiving belt 50 which is moving at the same speed as the carriers. Due to the inclination ofthe boom B and the carrier 50,1the tendency for the earth 90 is to fall onto the conveyer Abelt by gravity. The edges 50a (see Figuref2) of the conveyer belt 50 are preferably trou ghed as shown in Figure 2 so as to retain the earth thereon without the necessity of providing side plates on the carriers C. VThe drums 52, 54 and 56 are spoolfshaped in the conventional manner for troughing the. conveyer belt 50 as shown.

As shownv in Figure 4, when vthe bottom members 4A of the earth carriers C eventually leave the conveyer belt 50 as it travels over th-e drum'52, the earth is carried on the less inclined portion of the conveyer -belt 50 and finally deposited on the transverse conveyer' 80. i Such a construction eliminates 'the necessity for cleaning the .sides of a conveyer bucket, since the sides in the present invention are eliminated. Advantage is taken of gravity for transferring the earth from `the excavator chain to the earth receiving conveyer 50. i

As shown in Figure 6, 'the earthl may -be deposited in a transverse conveyer immediately after passing over the drum 52. The conveyer 84; may be swivelly mounted if d esired. A .swivel pin 94 may be mounted m a stationary socket 96 provided for this purpose.

The boom B may be adjusted by any suitable mechanism such as the chain 108 and gearing 110 shown in Figure 7 The gearing 110 is actuated for swinging the boom about the drive shaft 26 as a pivot and when the connections 100 and 102 are used as shown in Figure 6, the same adjustment for the boom will adjust the conveyer belt and the guard shoe D. Although I have shown the guard shoe on my drawings, it can be dispensed with since when not used earth would pile up in the place that the guard .shoe assumes and would be carried away as the machine advances.

Other types of conveyers can be substituted for the belt 50 and other changes may be made in the construction and arrangement ofthe parts of my earth discharging mechanism for excavators without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims, any modified forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention:

1. rlhe combination with excavator mechanism including digging elements, earth carrying means and means for moving said elements and earth carrying means in a. path at an angle to the vertical, of a conveyer movable with and mounted adjacent and havf ing a portion thereof parallel with said earth carrying means and traveling in the same direction thereas to receive earth therefrom by transference of the earth from the earth carrying means to the conveyer during the parallel movement of the earth carrying means and the conveyer.

2. In a device of the character described, a frame, an inclined digger boom thereon, an excavator chain on said boom having a downwardly traveling` upper stretch and an upwardly traveling lower stretch, earth carrying means on said excavator chain, a conveyer belt on said frame having an upwardly traveling upper str-etch arranged below and substantially parallel to the path of travel of said lower stretch of excavator chain, and means for causing synchronous movement of said last two mentioned stretches in the same direction.

3. In al device of the character described, a frame, a digger boom thereon, an excavator on said boom, earth carrying means on said excavator, a conveyer belt on said frame having a stretch thereof arranged below and adjacent the path of travel of a stretch of said earth carrying means, means for causing synchronous movement of said stretches in the same direction, said conveyer belt having va lower end spaced from the ground s urface and a. guard shoe forming an extension of said conveyer belt and spanning the Vdistance v form a frontfor said back and bottom mem-A bers which are movable therewith during the operation of receiving earth therefrom. n

5. In a device of the character described7 excavator mechanism, earth carrying means i supported thereon including bottom members,

means for moving said excavator mechanism and a conveyer movable therewith and travelmg m contact with said bottom members of said earth carrying means whereby to receive arth therefrom.

G. In a device of the character described, a frame, a digger boom thereon, excavating means on said boom including earth carrymg means, a conveyer' belt on said frame arranged adjacent the path of travel of said earth carrying means and having a lower end spaced from the ground surface and a guard shoe forming an extension of said conveyer belt and spanning the distance between the lower end of the belt and the ground, said guard shoe having a guard surface in substantial alinement with said conveyer belt and having side plates on each side of said excavating means.

7. In a device of the character disclosed, a digger boom, excavator means on said boom including earth carrying means having back and bottom members, and an earth receiving conveyer belt and a guard slice associated with said excavator means and the earth carrying means thereon, and means for moving said earth receiving conveyer belt at the same speed as said earth carrying kmeans whereby to form a front for said back and bottom members andinovable therewith while receiving earth therefrom.

8. In a device of the character disclosed, a digger boom, excavator means on said boom including earth carrying means and an earth receiving conveyer belt associated with said excavator means and the earth carrying means thereon, said conveyer belt being troughed to provide sides forsaid earth carrying means.

9. In a device of the character disclosed, a digger boom, excavator means thereon including earth carrying means having back and bottom members, an earth receiving conveyer belt associated with said excavator means and the earth carrying means thereon, said conveyer belt having side plates forming sides for said earth carrying means.

10. ln a device of the-character described1 a frame, a digger boom thereon, an excavating chain on said boom, earth carrying means on said excavatorchain, a conveyor belt on said frame arranged adjacent the path or" travel of said earth carying` means, said conveyor belt having fla 'ed side edges extending laterported thereon, excavator means carried by' said'boom including earth' carrying means, a conveyer having an inclined portion adjacent the path of travel yol: said earth carrying means and a portion of less incline for carrying earth away from said excavator chain.

13. In a device of the character described, a frame, a digger boom thereon, excavating means on said'boom including earth carryillg means, a conveyer on said 'frame arranged adjacent the path of travel of said earth carrying means and having a lower end spaced from the ground surface and -a guard shoe forming an extension of said lconveyor and spanning the distance between the lower end of the belt and the ground, said guard shoe having forwardly extending arms pivoted at their forward .ends -for free up and down movement ofthe guard shoe.

Des Moines, Iowa, December Y8, 193,0.

NonMAN nn WIND.

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