US1596269A - Hoist-driving gear - Google Patents

Description

Aug. 17 1926. 1,596,269

F. A. JIMERsoN E'r Al.

HOI ST DRIVING GEAR l Filed July 6I 1925 i 2 Sheets-Sheet 1 lIl Aug. 17,1926. 1,596,269

- ,F.A. JIMERSON El' AL I HoIs'r DRIVING GEAR Filed/uly 6 1925 2 Sheets-Sheet. 2

THEIR A oRNEY Patented ng. 17, 1925.

essaies @unirse 'Starts sNiosFi-'cs.

"FRANCS A. v/.`lf-'.|Il/1 TIRSCJN,#OF -ATHENS, PENNSYLVANIA, AND CAID H.- PECK, OF WA- VBRIY,`NE`l/V 'YO-RK, ASSIGNORS TO INGERSOLL-RAND COMPANY, 0F JERSEYCITY, NEW JERSEY, A'GORPORATION VOF NEW JERSEY. y

yHoIsfr-iiniviivs GEAR Appiicaaon'aiea Ju1y-e,.1925. seriaiiro. 41,590.

This invention relates tovlioists,but more particularly to a fluid actuated hoist capa ble oic comparatively heavy duty in which the motor shaft is geared to theV drinn by reduction gearing.

The objects of the invention areto secure a simple, strong, unitary hoist construction including compact and durable reduction Y i/,eariiig capable ot/being subjected to considerable rstrain Without derangement y or `breakage- The invention ijs sho'vvnin one of its preferred tori'. sin theaccompanying'drawings, in ivhich f Figure 1 is alongitudinal'sectional eleva- `tion. and

'Figure 2 is a transverse sectional vieiv ,partly broken awayon't'he line 2 2 of Figure '1 l'ookingin thediiection oit the arrows.

'Referring to Athe drawings only 'so much oi" afhoist is illustrateldas Willserve'to make `'the invention clear and'it is tobe understood motor or an electric motorl may be used and the hoist may be operated with or Without an automatic brake.

The motor comprises the case A having the case cover B secured thereto as by means ot the capv screws C Which also hold the parts against the hoist. housing D.

The rotary driving member of the motor consists of a plurality of rigidly connected angularly disposed cylinders, of Which only one cylinder E is shown in the drawings tor purposes oic illustration, there being in tactY three cylinders constructed as integral parts of a suitable Cylinder casing H Which connects and braces theV cylinders.

The cylinder casing H is mounted to rotate about the hollow stationary shaft L 'which slots suitably supportedin the case A at one side of the case, and .extending into a rotary sleevel or bushingO keyed and. suitably connected to rotate a driven member, such 'the motor shaft "P extending through the case coverBY and throughthe hoist housing 'D and'supported in afbearingFin tlie'gear case B.

.Tlie'wallsot each cylinder, lindicated geni l'ei-ally, by the reference character are preferably .slotted .longitudinally at opposite sides at th'eirfouter portions forja 'portion to the cylinder casing 'H to rotate therewith,

of their ilength, 'as .indicated A,at i Q, through y extend 'the Wrist lpins Rot the pistons lS, and spacing sleeves T are preferably provided over the VWrist pins. Stationary'eccentrics U 'and Vare mounted at each sideo''the cylinder casing H inany and in ,this instance lthe eccentric `U' vis preferably formed 'as a part of' the stationary shaftv L, the shatt'and Aeccentric being held' roni'rotation kais by means ci" the pin lV. The .eccentric V is `conveniently held tothe case 'coverB asby means tot the pin X-,land the sleeve O and motor shaft 'PA rotatewithiii the eccentric'VWhi'ch Vforms'a.-bearing forthe sleeve. Applurulity of( yokesa, Zi'fand @and Zfe revolubly zmounted side by sideon theeccentrics U and V respectively, and ball bearings g consisting oi cages and balls, as shown, 'are preferably interposed between 'the yokes and the eccentrics.k The yokes are assumed to be connected in pairs to the pro- Jeeting ends of the Wrist pins R, as shown and described inthe aforesaid Patent No.

and 'f "are 1,484,960. The intermediate yokes .7i and e forming one pair are adapted to be connected to the Wrist pin R ot the. cylinder E shown in the drawing, and the other pairs oi yokes are Connected to the vWrist pins of the other cylinders, not shown, it being understood that rthere are twice as many yokes as cylinders.

Suitable ine-ans are provided for supplying` and distributing motive fluid to the eyriiiders, and as shown pressure Huid, as oompressed air, may be supplied and exhausted through the hollow stationary shaft L troni the supply connect-ion Y.

A suitable throttle valve Z is provided for controlling' the su 3 ilv of fluid from the su i. TTi r ply connection r and for reversing tliernotor. The drum L having the rope or cable j is suitably keyed to the drum shaft 7c formed as the hub or tubular extension ot the `internal gear 0 rotatable Within the outer flange. portion p ot the hoist housing torming a part o'i the gear case, so that the drum rotates about the motor shaft l). A driving pinion g is carrie-d by the motor shaft l.D and a trame fr carrying double planetary or intermediate gears s is rotatably mounted Within the case wholly upon an extension t the crurn shaft vEach intermediate or planetary gear s is formed with tivo portions a and 'v having different numbers or teeth and a stationary internal gear fw is conveniently formed as-an integral part oi:v the gear case B.

The planetary gears s are carried on pins fc rotating in ball bearings in the interme diate gear frame r and in or ler that this planetary' gearing may act as a reduction gear, the. internal gears w and o are provided with different numbers ot teeth. In the present instance, let it be assumed that the driving pinion Q has twelve teeth for eX- ample and that the 'portion a of each planetary gear s has twenty-seven teeth of the same pitch as the pitch ot the teeth on the driving pinion, While the. portions o ot the planetary gears have twenty-four teeth like Wise of the same pitch. The stationary internal gear 'w may be assumed to have sixtysixteeth While the rotatable internal gear 0 has sixty-three teeth all of the same pitch. In consequence of this construction, as the planetar 1 gears s are rotatively driven around the inside. oit the stationary internal gear fw by the driving pinion g carrying With them theintermediate gear 'frame r, the rotatable internal gear 0 willv be driven at an angular velocity depending upon the dierence between the numbers of teeth on the two internal gears.

ln assembling the epicyclic reduction gearing, the construction is such that the rotatable internal gear o may be rotated relativelyI to the stationary internal gear w to a given point at .which one tooth on each internal gear Will coincide as indicated at the point y for instance on Figure 3 and on each double planetary gear s there is one point at which the cutting otl the teeth on the tivo portions ont the gears is commenced so that two spaces come inline permitting the planetary gears to be assembled properly with the internal gears.

ln a hoist, the combination ot a drum housing having an outer tiange portion Jroi-ming part ot a gear box, a motor shaft passng through the housing vand having a driving pinion at its outer end, an internal gear inside the said iange portion of the housing and having a tubular hub journaled on the motor shaitt and 'forming the drum shatt, a drinn rotatable With said tubular hub, an extension on the hub forming a bearing, an intermediate 'rame rotatably mounted wholly upon said extension or the hub, double planetary gears carried by said frame, and a gear case'having an internal gear secured to the outer Flange portion of the housing, the ditlerent aortions ot the planetary gears having ditlerent numbers ot teeth niesliing with the said internal gears respectively.

In testimony whereof We have signed this specification.

FRANCS A. .HMERSQNJ @AID H. PECK.

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