US1671252A - Crane - Google Patents

Description

May 29, 1928.

G. E. MOORE CRANE Filed Sept. 30. 1922 4 Shets-Sheet 1 G. E. MOORE May 29, 1928.

CRANE 4 Sheets-Sheet '2 Filed Sept. 30. 1922 I INVENTOR ATTORNEY May 29, 1928.

G. E. MOORE CRANE Filed Sept. 50. 1922 4 Sheets-Sheet 3 INVENTOR ATTORNEY Y 4 Sheets-Sheet 4 G. E. MOORE CRANE Filed Sept. 50. 1922 May 29, 1928.

INVENTOR v BY I ATTORNEY Patented May 29, 1928.-

UNITED STATESPATENT) oFFicE.

. GEORGE EDWARD Moons, or MUSKEGON, MICHIGAN, ASSIGNOR, BY MESNEFASSIGN- MENTS; CORIORATION OF DELAWARE.

TO SHAW CRANE-PUTNAM MACHINE CO. INCL, OF MUSKEGON, MICHIGAN, A

can-m1.-

v I Application filed September so, 1922. Serial no. 591,466.

This invention relates to cranes and, more particularly in'some of its details, to heavy duty traveling turn-table cranes for use in connection with machine shops, repair shops, and the like.

.The invention has for its general object an improved construction of, theparts and assembly of a crane of the class mentioned resulting in an arrangement whichis efficient in use and comparatively inexpensive in manufacturing cost. 3

Another object is to provide a crane of the class mentioned having novel features and arrangement of parts especially adapting it for the quick and efiicient handling in repair shops or the like, of heavy apparatus such as locomotives. t

Another object is to provide an improved.

crane'wherein no'vel'and effective means are employed for mounting and operating the turntable hoist.

Still another object isto provide animproved suspension mechanism .adapted particularly for use in turn-table cranes whereby a load is readily attachedin properly balanced position and swung on. a vertical axis to any desired position i Another object is to provide a novel and effective current-carrying connection for transmitting electric energyto the motors ofthe crane.

Other objects will be in part pointed out in connection with the following detailed description of an illustrative embodiment of the invention, and will be in part obvious in connection therewith.

The invention accordingly consists inthe features of construction, combinations of ing mechanism Fig. 3 is a fragmentary sectional View taken approximately on the line 3-3 of Fig.

2' looking in {the direction. of the arrows,

certain parts being omitted for clearness andsimplicity of disclosure; p.

. Fig. 4 is a detail enlarged sectional view on the line 4- of Fig. 2 looking in the direction of the arrows; I

Fig. Tris a view ofthe suspension means for suspending the load; e Fig. dis a view of an alternative form of lifting beam;

Fig. 7 isa vertical section of the current collector; A

F 1g. 8 is a plan view of the same; and Fig.9 1s a'plan View of one corner of the lower frame of the trolley with parts omitted.

Referring to the drawing for a'detailed description of. the illustrative embodiments shown, the main bridge 1' of the crane in cludes parallelspaced girders supportedat' opposite ends by trucks 2. a-nd running on rails supported any desiredmanner and extending in elevated position along oppositefsidesof a machine shop or'the like. The longitudinal bridge-girders are suitably secured together in spaced parallelrelation: ship by transverse frame members (not shown). Any desired mechanism may. be

employed for drivingthisbridge along the isle.

Tracks 3 extend along these bridge girders and atrolleyt having'wheels 4 is mounted thereon for longitudinaltravel. This trolley is constructed in two parts, a lower frame 5 and an upper frame: 6. The lower frame includes longitudinal frame members or sills .7 arranged in spaced parallel pairs at each side vof the frame, the wheels 4;. being sup ported each end thereofforrotation between the ,sills of each pain Cover plates 7". are secured to the upper flanges of these longitudinal sills forming in effect longitudinal boX girders forthe lower frame.

The transverse sills or frame members 8 are connected at opposite ends to longitudinalsills 7. Transverse frame members or sills 9 in the form of I-beams are spaced inward- 1y from theend of the lower frame," being secured at opposite ends tothe inner sills 7 One of. these I-beamsis'shown in section in Fig. 4, and both. are shown in dotted lines in Fig. 2.

i Diagonally disposed-braces 10' and 11 em 7 tend.

tend across the corners between the inner sills 7 and I-beam sills 9 as shown in Fig. 3, and in dotted lines in Fig. 2. These braces are arranged in parallel pairs and act not only as bracing members rigidifying the "The upper frame section of the trolley is supported for horizontal rotation on the lower frame on the conical rollers 12. and has longitudinal and transverse I-beam sills lbsecuredtogether at the corners by gusset plates and'connecting angles riveted thereto. The upper frame is somewhat smaller in horizontal dimensions than the lower frame, thus providing marginal areas on the latter for placing certain driving mechanism re ferred to hereinafter. Heavy metallic bearing slabs Mare securedin diagonal position across thecorners of the upper frame as by brackets which are riveted to the frame to whlch the slabs are bolted. These slabs not onlyfunction as rigidifying braces for the framebutalso an in'iportantfunction thereof is to form supports at the corners of the frame for supporting a circular track 16. For this purpose, the lower faces of a these slabs lie flush with the lower faces of the I-beams 13, and a continuous 100% bear- "ing forthe track is thus provided conjointly by the beams 13 as the supporting slabs 14. ii i Thetrack 16is formed at its lower part with an inclined flange .17 forming an inlinedor conicalsurface adapted to contact with the upper periphery of the conical rollersfor rotatably supporting'the upper frame on the lower. This track is provided 'withgear teeth in its outer periphery which are heavily shrouded by the projecting lowci-Tfla-nge of theftrack as clearly shown in Figure 4-; TlllS lower flange is slightly inclined. to form a conical supporting surface for coperating with the conical surfaces of the suiaortln rollers 12. The

toothed construction of this track as described provides a continuous circular invtegral rack forrotating the upper frame,

resulting in acompact and durable construct on. Theupper frame mounted as described forms a turn-table rotatable in a fhorizontalplane'and this is rotated by a motor 18 mounted on the lower frame. A pin ion '19Tiueshes with the driving rack formed in the track, being carried at the upper end of a shaft 20 mounted vertically in bearing carried by ab 'acl'cet 21 bolted to the Lbeam 9. The train of the gearing shown in Figs. 2 and 4 is arranged to transmit power from the driving motor to rotate the turn tajble.

For supporting the turn table in properly centered position on the supporting "rollers 12, centering rollers 22 are supported upon vertical shafts or rods 28 suitably secured to the lower frame 4. The rollers are mounted in position to Contact the outwardly disposed annular surfaces presented by the lower flange of the track 16 as clearly shown in Fig. 3, these surfaces being turned to true circular form for this purpose; It will therefore be seen that the turn-table may be rotated asdesired while being always retained in properly centralize-d relation. For driving the trolley along the traveling bridge a motor 24 rs supported on the lower frame having a driving pinion. 25" co-operating with a gear train 26 for transmitting power to the.transversely disposed. shaft 27 carry m p1n1ons 28 meshing with driv ng gears 29secured to trolley wheelsh. Theturn table motor 18 andtr'olley motor 24, as well as the hoisting motor hereinafter referred toare controlled in any approved manner by an operator stationed 'in a fixed cab carried by the bridge.

The hoisting mechanism forthe crane'is mounted upon the turntable. As shownin Fig. 2, this mechanism ncludes a ho sting drum 30 mounted on the turn-table section in suitable pedestals and havingperipheral" grooves 31 for receiving "flexible winding connections such as wire, rope or cable shown at 32 and 33 1n Fig. 1. This drum 1s driven by a hoisting motor 34: towhich it is connected by gear trains 35 and 36; A

brake for controlling the motor and hoisting,

mechanism is shown at 37 and is operated electrically by a solen0id f3 8 connected for electrical control from the operators cabfi The flexible hoisting connections are di videdinto two spaced parts 32 and 3'3feach connected to the grooves of the, hoistingv drum and threaded to spaced blocks 39and 40 respectively. These blocks are supported on the turn table section of the trolley by transverse frame inen ibers ll disposed in parallel relationship and rigidly secured at their ends to the I-bean'i' Theblocks supported upon axes l2 CilllMXl by trans verse plates 43 rigidly secured to tlieframe members (ll, each block being made up of 'a plurality of sheaves i l in order that a numberofturns of the flexible hoisting cable may be employed for'multipl'ying power in a manner known in the art.

Spaced hoisting blocks 45 and 46 are supported respectively below the upper blocks 39 and 40 and each is made up of a plurality of sheaves Mov r whichthe hoisting Cables ill:

. any suitable bolts 48.

pass. The lower blocks are. secured to a lifting beam atspaced portions thereof by connecting means such as eye- The hoisting connections for attachment of the load are des gned more especially for handling very heavy apparatusof considerable longitudinal extent, such. for example as locomotivesand means for connection at spaced parts of the load. are included.

For providing el'liciont means for convenient attachment to, and for balancing and turnmg theloadina horizontal. plane a lifting "beam 49 is employed. This beam may be of lmiltatp girder construction and is supported in horizontal or app roximatel y horizontal positionfrom the hoisting mechanism of the turn-table described above as shown in Fig.

l. The securingmeans lS are Spaced apart on the lift ng beam and attached to the latter to properly balance the combined beam 'bodiment illustrated, these slings are especially adapted forsupportmg a locomotive orthe like, and are formed for coo-peration with the forward boiler end and fire-box end respectively. The forward sling 51 for the boiler end includes a flexiblemember adapted to pass around the boiler,"and loops. 52. are secured; to the tern'nnals thereot for passing over opposite upwardly extending horns 53 of a sling hanger 5 f seated upon the upper surface of the lifting. girder.

Flanges, extend dowmv'ardly' fromthe slit 3' hanger on opposite sides of the girder, holes being'pro-vided; for asecuring pinor bolt 56 and positioned for registry with any one of a series of holes 57 in the, girder, so 'l'hehanger can besecured in any. adjustodposition asdesired.

he opposite sling (30 is attached to the lifting beam, by means of a link-61 secured to the beam bye pin 62 adapted to pass through any one of a pluralityof holes-63 in the beam, end. The lower end of this link is pivotallyattached at G lto the upper sling girder, centrally, of its length. This sling is of special construction adapted for co-oporation, with aload having a flat contact surface; andincludes an upper girder 65 and a lower girder 66 connected at juxtaposed ends by vertical bars or links 67having pivotal connections to the respective girders. lt will be seen that this sling is easily placed in carrying position and readily adjusts it self to the load.

The adjustable connections to the lifting beam enables the load. to be placed. as1decannot be carried broad-side. I H condit ons as these, I the arrangement pro;

is. square] thesired so to transmit stresses equally to the turn-tableand 'otherparts of the crane,

and to 'maintz-iin the parts. in proper alignment. liy the spaced arrangement of the upper and lower blocks as-described, it will. be seen that the transmission of turning lrlOHlOlllJS from the turn-table to the lifting beam and its load to adjust the angular position of the latterin a horizontal plane may be accomplished without any substantial relative angular displacement of the load withrespect to the turn-table. This facilitates handling of'heavy loads. In existing repair shopsand other machine shops, there is usually an isle extending along one side or along the center with angularly disposed side areas orstalls for receiving the 'IlOCOll'lOlllVG or the lilre.- These shops are often low, furnishing little room so. the load" cannot be elevated to pass over machinery in the angularly disposed stalls. Also the isles are usually so narrowthat the loacs Under such vided by this craneis particularly. .,advantageous, the load can be moved forward ly in the isle head on and quickly swung into position forplacing inv any angularly' disposed stall with'inaterial saving of time. Also it willbe noted that the trolley is'rela- .tivel} small and vertical over all dimensions wl'iereby installation is not obstructed in shops where over head room is limited.

Special connections for transmitting 'elcc-f trio power .to the hoisting motor 34 and brake solenoid 38 are shown. in Figs. 8' and 7. These connections embody a multiple contact slip ring construction ,with slip rings 70 carried on a post 71 which iscovcred with insulating material, so that the rings are insulated from the post and from each other. The middle portion of the post lower end being cylindrical, a.n l;' io u1.tnaled in bearing bosses 72 and 72 on the trolley frame. A thrust collar73 is arranged on the cylindrical portion of the post at the junction of the square I portion therewitln]justjabove the bearing boss The upperend of the post isheld in a boss '74: having threaiiled engagement with one end of a conduit The conduit extends radially outside of-the turn-table section of the trolley and is. bent down to a connection with the lower trolley frame 41.. Each of the rings/T0 is composed of halves, which are bolted; onto ,the square shaft as shown. shown in Figure 8, thesections of each ring have a square hub forengaging the post. The rings aresl'releton rings as shown, and the terminals of the cables 7 6 which lead tothe motor and brake solenoid, are bolted to the respective rings. The cables are thread: ed upwardly through the rings, and into the conduit 75. A-support 77 of steel or the like is secured to the. upper trolley frame,

limiting sense.

and this support carries a wooden block,

forming an insulator, to which are attached the carbon brushes 78, and the brushes engage the collector rings; While only one brush for each ring is shown, for large'capacities, two brushes would be used. In practice the square portion of the post will be insulated with'miea. The center post which carries the collector rings is jour- 'naled on theupper trolley frame, and is above construction and many apparently widely di'fl'erent embodiments of this invention could be made without departing from the scope thereof, it, is intended that all matter contained in the above description or 7 shown in the accompanying drawlng shah:

be interpreted as illustrative and not in a It is also to be understood that thc'language used in the following clanns 1s 1ntended to cover all of the generic and speclhc features of the invention herein described and all statements of the scope of the invention; which, a matter of language, might be said tolall thereb etweeni Having described my invention, What I claim as new and desire to secure by Letters Patent, is: i i f j V 1; In a crane, in combination, a traveling bridge, a trolley mounted to travel longitudinally of said bridge, a hoisting mechanism maturing a winding drum .rotat'a-bly mounted on said trolley, a lifting beam, blocks attached to said liftingv beam at spaced apart points, blocks Connected with said trolley having their axes disposed substantially coincident with a center line of said trolley, said hoisting drum being mounted to one side of and above said last ntmtioned blocks, and hoisting cables eX tending between the blocks on the "lifting beam and trolley and-s:-uddrum.

2. In a crane, in combination, a traveling trolley including upper and lower members,

i a means for mounting said upper member on th axisefrotationof said blocks "beingat the lower 'meu'iber to turn "about, a vertical axis, blocks carried by said upper member located one at each SlClG oi said vertical axis,

of saidupper member, aihoisting drum r0- 'tatably mounted on said upper member above and to one side of said blocks, other blocks located directly below thefirstmentioned blocks and flexible hoisting connections extending between the drum "and said first and second mentioned blocks.

3. In a crane, a traveling trolley for said crane iiticluding upper and lower members, said upper member being mounted on the lower member toturn about a vertical axis, said upper member comprising a rectangular frame having spaced apart connected sides and ends, two spaced apart "frame members extending between-opposite [sides oi? the frame and securely connected thereto at theirends, blocks, one adjacenteach end of saidi'ra'me members mounted between and supported by theirame members, the axes of rotation of the blocks being in alignment and at right angles to andintersect-ing the vertical axis about which the said upper member turns, other. blockslocated below the first mentioned blocks, a hoisting drum carried by said upper memher above and to one sidejof said frame inenibers, and flexible hoisting connections mentioned blocks.

between said drum and the first and second 4t. "11 a crane, in combination, a traveling bridge, a trolley mo'untedto travel longh tudinally of said'bridg'e, a turn table'mount:

ed on said trolley and adapted to be turned about a verticalaxis, spaced apart hoisting I blocks carriedby the turn table and mounted to turn about horizontal'axes located in secting thevertical axis about which the turn table turns, a lifting-beam disposed below-the bridge, spaced apart blocks connected to and located above said lifting beam, a hoisting drum located above andto one 'sideof said first blocks, and flexible acter described comprising, a rectangular l'rame having spaced apartgsidesand ends "alignment and atri'ght angles to 'and inter connected together, two spaced apart trans- Verse frame memberslocated between the sides of the frame and attaehed thereto at said frame members, i

In testimony whereof I allix my signature.

GEORGE EDWARD MOORE,

.115 their ends, hoisting blocks disposed between

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