US1788081A - Motor bedplate - Google Patents

Description

J. L. BROWN MOTOR BEDPLATE Jan. 6, 1931.

Filed Feb. 14, 1927' INVENTOR John LBrown A'TI'ORNEY Morefparticularly, myinventin 1!! in systems of operating elevatorsknowni as Patented Ja n. 6, 1931 1on1: L.:; BR O WN,1OF"VERQNA, rnmvs LvAnrA, ASSiGNbR"TO'WESTINGHOUSE ELEC wage a mnnnrnornnmeoomrnny, A GORPOR-ATIONOF"PENNSYLVANIA' I moron BEDPLATIQ i [\r) p v I v ,Myin ventionrelates to 7 motor bedplates and especially tobedplateswhichare reversible and which areapplioable in any one of a great yarietyof installations 1 y p relates to elevator-motor: bedplatesfwhich are revers ible and have unsynnnetricallyv disposed openings therein for the purpose of adapb ing the same to practically all conditionsof 4p installatiom,as will be hereinafter described;

."lhe object of invention is to provide a strong light-weight tbedplate for elevator motorsf whichmayybe utilized with substans tially-any oneof' the roping conditions met gearless traction. drives. uu ln'the accompanying drawings, Y ig. 1 isa plan viewof a bedplate embodye ingmyinvention,

installation embodying my invention,

25 1 Fig. 4 is a imilar view showing another application of the bedpla'te shown Fig. 3, an f [Figg 5 is alsoa similar .view showing an othenarrangement which may be obtained by reversing the bedplater from. the position 'shown'in Fig. 4: to allowfor disposal of roping mechanism to the left thereof. -My. cast-metalbedplate 1 is hollow, having chambers 2 formedybytransverseowebs 0r fiepartitions ,3, which. reinforce the side, top

and bottom Walls 4: thereof.

During the'casting of the bedplate, aplurality .of baked-sand cores, (not shown) havingprojecting and supporting portions, are provided to form the chambers 2.- The projecting;portionsof the cores form alining,

windows or openingsfi in the top and bottom walls ofthe bedplate, through which the cores maybe dug out when the castingoperation is completed.

It is apparent that the windows 5 are necessary in order that the cores may be removed from the chambers, but in addition, the windows materially facilitate handling and in- 9 stalling the bedplate,

fit, as shown. Fig. 4.

Fig. :2 isa sectional of the plate ihppli eation filed retruary 14, 1m.ssmmif167,9os. p

{I,Pioj eding'fiomitheviipprlra of meted; plate, area pluralityof bosses or raised ma? 1 chin ds ces':611 1 w c a mo or 8 s V mounted, a sshown in Fig. 3.

A similar setof bosses is provided on the lower face of. the .bedplate,.so that-it may-be; invertedand thev motor 8 may bemounted on A1 substantially rectangular opening bounded on'four sides byoportionsof the cast:

ing, isgdisposednear one end of the bedplate to {accommodate theeables '10' which. pass over the motor sheaverllr 'Acsecond sub. stantially rectangular "slot-like opening 112,

bounded on three sides by portions of the bedp'late, is I disposed; in alinement. V with the first opening and separated therefrom by'fla v bracing portionor web 13; a Q ;gearless;, traction driv e mechanismforan, elevator is shown inFij 3. ;An elevator car o'rplatform 14 is-suspeni ed at the ends of a or'cables 10.

pluralityof parallel ropes cables p sov'r'fthe sheave a 7 motor 15 the motorshaft. being indicated at '16, The cables extend from .the motor sheave to an idlerjlshea've 17fwhich is disposed laterally from, below, and axially parallel to, the motor sheave 11. From the idlersheave 17, the -cables extend to the motor sheave which they encircle a second; time and then return .tothe idler. sheave, thereby forming a closed loop within the'endsof which the two sheaves 16 and 17 are disposed. r

a The cablecends18-which depend vertically V In Fig. 1, the same bedplateis shown in inverted positionwhereby, as "will be evi operating dent from, the drawing,'the idler sheave may be displaced a greater lateral distance from the motor sheave. Thus, the cables mustpass'through the bedplate at different angles and in different places than those shown in In order that a roping system similar to that'just described may be utilized, it is necessaryto 'provide openings in the bedplate through which the cables maybe passed.

Since the relative positions or displacement -of the elevator car andthe counterweights 7 sizes of sheaves, so that the rope may'haveto" a ient applications, and i t has notfbeen pospass thro ughrthe bedplate i at difierent dis tances fromthe axial center line.asndxoneither side thereofl I v A bed plate ofan intermediate sizejtsnchi as is shown in the accompanyingdrawing,

weighs approximately 1500 pounds. It is imperative, therefore, thatisuch device shall be as" light in; weight as is consistent with the stren'gth and rigidityfnecessary to' the opveration ofthe elevator system 'ofwhich it is r It "has been necessary for manufacturers to have" available a great variety of designs of bedplates to meet tlie' dema-nds ofdifier sible to build aibedplate'forany particular application until theexigencies' of the. ustomerfsjparticular requirements were" known 5 ast'o the elevator speed; Ior" sheave diameter;

a side.

making the seaplane reversible, I 'have' fpr'o- V 5i) trated in Figs. a; 4, and Meli sa-rasc ls, 5'5

the sizeofLthe elevatorfshaft; the distance.

bet-ween j the ropes, and the disposition of thev co nte weight on the ri htor left hand Hereto fore, it necessary toprd was either separate'bedpiates"for"rightand left-handed? throws, onbedplates whicliare symmetrical, so" that they my beusee with either right or lefit' handed' throws; lint have very limited. ranges of applicability This 7 has-been"ahandicapior'themanufacturembutit has been a star more" serious "iiandicaip for the: customer, who fwasflimitecl in th'e'flex- 'ibility' with whicli lie could rearrange his installation according to requirements.

a By utilizing "openings'9 and IQQEwliich are disposed" non-symmetrically"; or at different distances from; the axial "centerline of the he'd-plate, lon'e o f the open-ings'being 'a' slot and the other being; an enclosed hole, and by vided" a: single th at will accommodate all of the variations in "the angular throw-s of the ropes andin the sheave sizlestihat are ordinarily met with in practice, asis i l-lusthe samei'angu'lar throws and sheave sizes maybe accommodated, with equal facility. fbr; either left-hand throws or V rig -ht hand throws-as will 4 be obvious.

I'My' novel. construction saves money for the manuraetur'eir, also, because, although each be'lpl'ate is more "expensive than the :prior-artdevices, the saving in the number of different types ofbedplat'e to be carried, the "ability'fito manufacture and stock a the which orders maybe filled for the varying needs of customers, more than offset the tors 'and instal'lationm from the. standpoint of'the'manufacturer as well as from that of the customer, ashas been pointed out.

l c m i e iem 7 l 1;. A; hollow- .castme n havi ng top and bottom faces connected By vertical 7 websiiandflanges providing hollow enclosed spaces, each of the hollow enclosed spaces measures about four feet by six 'feet versely; of the bedplateandbeing provided with a vertically extendingslot iirthes'idxdf the bedplat'e and in alinemen t wirhs i a longhole. a

a i" For use in elevator. system. compri's:

ing; acar; axcounterweight, a'm0tor5;a-inotor sheave, a cou'nterv'vieigl'it sheave; and ropes operatively} connecting 1tli'em}-";a{ reversifi1e bedplate forsup'porting' the" motor; an d'hav ing; a vertically extending hole of elongated cross-section extending; transversely thereof 3 and a vertically extending slotin the sale thereof in substantial alignment with: the elongated axis of said hole, said hedblate being adapted, in one position for'theipas sage of the cancarrying' rope-portion through the. hole, and for the-Fpassagzofa rope-portion between the' two sheaves through the slot, and being adaptefl in'the reverse position; forEthepassage of theicar- A carrying rope-p ort'ion through the slot", and for the passage ofa rope-portion Betiweentlie two sheaves throughithe' hole a 4 A reversible bedzplate susceptible of use 'witli' either surface vuppermostaii'c'l' hav i'ng 'a vertically extending hole of ohlong cross secti'on extending transversely thereof and auverticzrly. extending slot in the-side thereof in alignmentwithsa-id oblong-hole.

4. For use in an elevator system c'omprising a C's-1 a scounter balancing-means; a rope carrying the elevator carat ,oneendand thecountferbalancingmeans at the other end, two sheaves supporting the respective ends oftherope, anda motor drivingfthegslien've :for the car end of th'erope, a novel reversible 'be'clplate for supportingsaid sheaves and motor,. said bedplate' having a vertically extending hole having an oblong cross sectron extending transversely thereofand as vertically extending" slot in theside therecf in alignment with said oblong hole, said hole andfslot being adapted; in onepositionof ftliexbedpla-te, for-the passage of'the car ca-rrying rope through the hol'e, and *forthe passage of the counterbalance carrying through the slotQahd in the reverse positiofi Q of the bedplate adapted for a difierent pas sagevof the several ropes.

In testimony whereof, "Ihav hei'uhto subscribed my name this 11th day of Febru-t l" pry, 1927. t Q t JOHN BROWN."

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