US1881748A - Excavating machinery - Google Patents

Description

Oct. 11, 1932. LJUNGKULL 1,881,748

EXCAVATING MACHINERY Filed Sept. 18, 1929 2 Sheets-Sheet l INVENTOR. Rolf Ljung/(u ll ATTORNEY.

Oct 11, 1932. R LJUNGKULL 1,881,748

EXCAVATING MACHINERY Filed Sept. 18. 1929 2 Sheets-Sheet 2 z 9 Z5 Z2 INVENTOR. Rolf Ljung/full ATTORNEYS.

Patented ()ct. 11,1932

' 'fUNITED STATES ROLE LJUNGKULL, .OF WAUWATOSA, WISCONSIN, ASSIGNOR TO HARNISCHFEGER COR- fan . from each PATENT OFFICE I PORATION, OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN EXCAVATING MACHINERY Application filed September 18, 1929. Serial No. 393,562.

' This invention relates to excavating machinery'such as power shovels, hoes, draglines, clam shells, and the like; In excavating machinery of this kind designed to handle a three cubic yard shovel dipper or a threeand a half cubic yard drag-line bucket or larger or smallerbuckets depending upon the length of the boom required, the machine, as a wholeas Well as its component parts, is of such unusually large size as to present a serious and difiicult problem in connection with the shipping of the machine from the place of its manufacture to the place of its use or in the shipping of the machine from one placeof use to another. In fact, heretofore, it has been necessary to ship such a machine disassembled and then set it up or assemble it at the place of use. It is easy to appreciate that these practically complete assembly and dis'assenibly operations which are incident to each shipping result in considerable'expense as well as the expenditure of a great dealof labor and the loss of time.

The present invention proposes such a novel construction and organization of the machine and especially of its main frame, its traction devices, and of the drive for the traction devices that the traction devices at both sides of the machine may be easily rethe machine and all of the parts carried thereby except the boom to be shipped on a flat car. Booms in this typeof-machine are already easily removed and with the present invention the boom and the traction devices are shipped on a separate fiat car. All that is required for removing or replacing the traction devices is the removal of a few bolts and nuts, the traction devices and main frame and elements of the drive of the traction dc vices being engageable and d'isengageable other by a relatively lateral shifting movement. Laborious and difiicult assembly I and disassembly operations are avoided.

Another important object of the invention residesin the provision of an excavating ma- ,chine of this character and having these adeffective in operation, and easy and comparatively inexpensive to manufacture.

Other objects and advantages reside in certain novel features of the construction, arrangement and combination of parts which will be hereinafter more fully described and particularly pointed out in the appended ciainis, reference being had to the accom panying drawings, forming a part of this specification, and in which:

Figure 1 is a diagrammatic view in elevation showing how a complete excavating machine is first brought into position with the main frame of the machine and the parts carried thereby properly overlying a fiat car;

Figure 2 is a view similar to Figure 1 but showing the traction devices removed'and the main frame lowered into position on the flat car;

Figure 3 is a view very similar to Figure 2 but showing the traction devices entirely removed;

Figure 4 shows the traction devices mounted on a flat car;

Figure 5 is a view partly in top plan and partly in horizontal section illustrating the main frame and the traction devices and the drive therefor and showing how these parts are assembled and disassembled; and moved as units to permit the main frame of t Figure 6 is a view in elevation of that side of the main frame from which the traction devices have been removed.

Referringto the drawings, the numeral 1 designates generally the main frame of a ma chine which is supported, as will be hereinafter morefully described, on traction devices 2 of the type having endless flexible treads or self-laying tracks. A revolving platform 3 is supported on the main frame 1 for rotation in the usual manner and this revolving platform carries the boom, the power plant and the other instrumentalities of the machine which are well known and widely used and are therefore not shown.

Referring now especially to Figures 5 and 6, it will be seen that the main frame 1 has on each of its sides two outwardly projecting lugs 5 which may be cast integral or otherwise suitably connected to the body of the main frame. The outer face 5 of each lug 5 is machinedtoa fiat plane surfac'eand the under surface of the outer end portion of each lug is similarly machined to present a downwardly facing shoulder 6. In the assembly, the lugs 5 engage and are supported on brackets designated generally at 7 and integral. with or otherwisefixedly connected to theframes 8 of the traction devices 2. Each bracket 7 has a machined face 7 'adapted to fitflush up against the machined face 5' of its lug 5 and the lower portion of each bracket 7 is formed with a machined seat or shoulder .9 upon which the correspondingly formed shoulder 6 of-the associated lug 5- rests. When the lugs 5 at either side of the main frame and thefbrackets 7 of the associated traction devices are brought into proper assembled relation; bolt-holes 10, 11 and :12 on each lug are aiined with correspondingly positioned bolt holes 13, 14 and 15 formed in the associatedbrackets 7 and adja-' cent portion of the traction frame8. The boltholesll and 14 are recessed or countersunk as indicated at 1 1 and 14", respectively, to define a pocket for the reception of'a key or washer 16 so that the bolts and nuts 18 extending through the bolt holes 10, 11,12, 13,

14 and 15 need only take the strain of holding the-parts assembled and are relieved of all shearing stressesQ In other words, thecoacting shoulders of the-lugs and brackets take the vertical load andthe keys l6-take the stresses set up by the-tendency ofthe trac'-- tion frames to shift lengthwise relative to the mainframe. r i i '3 Each traction 'frame 8 has one end bifurcated as at; 20 to receive the adjlustable bearings 21 for a shaft 22 carrying idlesprocket wheels 23 which mesh with the pins 24 of the links'25 of the "endless fiexible'treadsf The ends-er. the shaft 22) project beyond the sprocket wheels 23 and are received in the openingsof eye-bolts 26, Nuts27- and 28 are. threaded; on the eye-bolt 26 and engage the opposite sidesof 'apertured bearing wings or abutments '29 cast integral with the traction frame 8 or otherwise isuitably fixed thereto and through-the openings of which-the shanks of; the eye-bolts extend. The-opposite endof each traction frame 8 has a bearing for the reception of a drive shaft30 on which driving; sprockets 31 are keyed, the driving sprockets 31 coactingwith the pins 24 of the links to positively drive the flexible treads. each shaft 'adjacent the inner driving spocket 31, a driven gear wheel32 is fixed and enclosed in a gear casing 33. I Each shaft 30eXtends inwardly beyond its driven gear wheel 32 and gear casing, 33 and has its inner portionf34 adaptedto be j ournaled in a bearing- 35 provided in the'main frame; A removable flock collar is provided for the inner end of each shaft '34'and whendthe shaft34 is received in its bearing 35 in the opening 38 in its inner face to permit of the. passage into and out of the casing of a drive pinion 39. Each driving pinion 39 is positioned just alongside ofthe adjacent outer side member of the-main frame 1 and is'designed to intermesh with the driven'gear 32 when the machine is assembled. These drive pinions' 39 are preferably fixed on the outer 7 ends of sleeves 42 and the sleeves 42 are rotatably, mounted on a transverse drive shaft 431: driven from the'power plant of the ma chine by meansnof the usual gearing 4'1. Clutches 40 serve to clutch'the-sleeveshafts 42 to the driveshaft 43 when desired, 7 The ends of the drive shaft 43 project beyond the drive 'pinions- 39 and are adapted "to be rer ceived in flanged bearing openings 45 inathe gear casing 33. Q I I v A machine so constructed and. organized may be conveniently disassembled and assembled for shipment in accordance with the following novel method. The machine-is completely assembled at theplaceof its manufacture and may be run under its own power up a suitable ramp and onto a. fiat car F and supporting structure or framing S. built up alongside of the hat car,- as clearly shownin Figure 1; The mainframe-is then vjacked up; jacks J being positioned belowportions 50 of the main frame. The traction devicesfare then removed, by: taking out the bolts 18, ree

moving the set collars 36 and. shifting the traction devices laterally away from-themain frame. Such lateral. shifting of thetrac-V tion devices disengages the gears 32 from their. driving pinions '39 and pulls the shafts 34 out of their bearings as well'as' disengages the-'coacting lugs 5and'brackets 7. The jacks J are then manipulated to lowerthe main frame down onto the flat car, as illuse trated in Figures 2 and 3. The traction devices may be shippedseparately on a flat as shown in Figure-4 and usually the boom is also'mounted on the flat car with thetrac tion devices. Assembly of the traction-deviceswith the main frame may be carried out on the flat car by jacking up the main frame, placing the traction devices on suitable supporting structure S built up alongside of the flat car, shifting thejtractio'n devices later allyto bring the shafts 34 into the'bearings 35,.the gears 32 and 39into mesh, and the brackets 7 'intoengagement with the lugs .5, and then assembling and securing the bolts and nuts 18 and the set collars 36. The tractio'ndevices are complete self-contained units carrying the adjustment for the i'dle'sprock- 'ets and the driven gearing for the driving sprockets and are assembled and'disassembled as units,

The invention claimed is:

1. In a machine of the character described, a main frame having outwardly extending lugs at its sides, traction devices at the sides of the main frame and having traction frames provided with brackets adapted to have supporting engagement with the lugs of the main frame, fastening means for se curing the lugs and brackets engaged, said traction frames having their ends projecting beyondthe lugs and brackets and carrying driving sprockets and idler sprockets, an endless flexible belt trained about said driving sprockets and idler sprockets of each traction frame, a shaft mounted on eachtraction frame and fixed to the driving sprockets thereof, a driven gear fixed to each of said shafts, driving gears on the main frame adapted to mesh with said driven gear, when the traction devices are assembled with the main frame, each of said shafts projecting inwardly beyond its driven gear, said main frame having bearings adapted to receive said shafts andremovable set c01- .lars for securing said shafts against outward displacement from said bearings.

2. In a machine of the character described,

p a main frame having outwardly projecting lugs at its sides, each having a flat onter face and a shoulder along itslower portion, and

traction devices at the sides of the main frame and each havinga frame provided with brackets formed with seats or shoulders adapted to have supporting relationwith the shoulders of the lugs, said brackets also having'flat faces adapted to have flush engagement with the flate faces of the lugs,

, fastening means coacting with the lugs and with the main frame and brackets for securing the lugs and brackets engaged.

3. In a machine of the character described, a-main frame having outwardly projecting lugs at its side, each having a flat outer face and a shoulder along its lower portion, and traction devices at the sides of the main frame and each having a frame provided with brackets formed with seats or shoulders adapted to have supporting relation with the shoulders of the lugs, said brackets also having flat faces adapted to have flush en gagement with the flat faces of the lugs, fastening means coacting with the lugs and with the main frame, brackets for securing the lugs and brackets engaged, and keys interfitted with the lugs and brackets for .pre-

venting endwise shifting of the traction devices relative to the main frame.

4. In a machine of the character described a main frame, traction devices at the sides of the main frame, each traction device having a traction frame, interengaging means on the main frame and on intermediate portions of the traction frames providing for the support of the main frame on the traction frames, releasable fastening means for securing the interengaging means on the main frame and traction frames against displacement and disengagement, said traction frames having their ends projecting beyond said interengaging means, an endless flexible belt extending around and mounted on each traction frame, a shaft rotatably mounted on each traction frame and having driving connection with the endless flexible belt thereof, a driven gear fixed to each of said shafts, driving gears on the main frame adapted to mesh with the driven gears and to be disengaged therefrom upon application or removal of the traction frames to the main frame, each of said shafts projecting inwardly beyond its driven gear, said main frame having bearings into and from which said shafts slide when the traction frames are assembled wi h or disassembled from the main frame.

5. In a machine of the character described a main frame, traction devices at the sides of the main frame, each traction device hav ing a traction frame, interengaging means on the main frame and on intermediate portions of the traction frames providing for the support of the main frame on the traction frames, releasable fastening means for securing the interengaging means on the main frame and traction frames against displacement and disengagement, said traction frames having their ends projecting beyond said interengaging means, an endless, flexible belt extending around and mounted on each traction frame, a shaft rotatably mounted on each traction frame and having driving connection with the endless flexible belt thereof, a driven gear fixed to each of said shafts, driving pinions on the main frame adapted to mesh with the driven gears and to be disengaged therefrom upon application or removal of the traction frames to, the main frame, each of said shafts proj ecting inwardly beyond its driven gear, said main frame having bearings into and from which said shafts slide when the traction frames are assembled with or disassembled from the main frame and a gear casing carried by each of the traction devices and enclosing the driven gear thereof, each of said gear casings having an opening permitting of the passage therethrough of the driving pinion adapted to coact with the driven gear enclosed therein.

In witness whereof, I hereto afiix my sig-

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