US2781991A - Engine mounting - Google Patents

Description

Feb. 19,

Original Filed Sept. 2 1949 R. WALSH 2,781,991

ENGINE MOUNTING 5 Sheets-Sheet l INVENTOR.

ATTOR EY Fell 19, 1957 R. WALSH 2,781,991

ENGINE MOUNTING Original Filed Sept. 2, 1949 5 Sheets-Sheet 2 y 1 INVENTOR. 5 E my PM )fw 7% /PMM ATTORNEY Feb. 19, 1957 R. WALSH 2,781,991

ENGINE MOUNTING Original Filed Sept. 2. 1949 5 Sheets-Sheet 5 INVENTOR. BY MFM Feb. 19, 1957 R, WALSH 2,781,991

ENGINE MOUNTING Original Filed Sept. 2, 1949 l 5 Sheets-Sheet 4 IJl ]-icT E INVENTOR.

Feb 19, 1957 R. wALsH 2,781,991

ENGINE MOUNTING Uriginal Filed Sept. 2, 1949 5 Sheets-Sheet 5 Tij. ll icl. la

INVENToR.

4 ram/y United States Patent ENGINE MOUNTING Robert Walsh, Wilmington, Del., assignor to ACF Industries, Incorporated, a corporation of New Jersey Original applications, September 2., 1949, Serial N- 113,727, now Patent No. 2,719,488, dated October 4, 1955, Iand February 20, 1951, Serial No. 211,962, now Patent No. 2,717,746, dated September 13, 1955. Divided and this application April 30, 1952, Serial No. 285,281

3 Claims. (Cl. 248-.-22)

This invention relates to railway locomotives and more particularlyto mountings `for the power units in locomotives, "This application is a division of my application Serial Numbers 113,727 tiled September 2, 1949 and 211,962 tiled February 20, 1951, now Patent Nos. 2,719,488` and 2,717,746.

An object of the invention resides in completely damping the engine of a locomotive so that it is free to vibrate without transmitting the forces generated thereby to the framing and` remote accessories. v

A fur-ther object of the invention is to mount and arrangeauxiliary'power, units, each consisting of a Diesel engine, generator and accessories, so that they can be readily moved intoand out of the locomotive.

Another object of the invention resides in the arrangement of. auxiliary power units and associated accessories Within a lomrriotiveV to most eliiciently utilize the available space and toprovide maximum accessibility.

These and other objects of the invention will be apparent to those skilled in the art from a study of the following description and accompanying drawings, in which:

Fig. 1 is a diagrammatic plan view of the interior of thelocomotve- Fig. 2 isa vertical sectional view of a locomotive illustrating the relative position of a mounted auxiliary ename..

' Eig. 3 isa top View of one of the auxiliary power unit mountings.

Fig. 41s A,an end view of the mounting shown in Fig. 3.

Fig. 5 is a side elevational vview of the mounting shown in Figs. 3 and 4.

Eig. 6 is a plan view of another of the auxiliary engine mountings.

Fig. 7 is a side elevational view of the mountings shown in Fig. 6.

Fig. 8 is an end view of the mountings shown in Figs. 6 and 7.

Fig. 9 is a plan view of the cradle for the auxiliary engine units.

Fig. 10 is a side elevational View of the cradle.

Fig. 11 is an elevational view of one end of the cradle.

Fig. 12 is an elevational view of the other end of the cradle.

As shown in Fig. l, two similar traction power plants A and B are arranged in longitudinal alignment on the longitudinal center line of the locomotive power compartment. Two similar auxiliary power plants C and D are arranged adjacent the remote ends of the traction power plants with their longitudinal center lines extending transversely of the locomotive.

The auxiliary power plants C and D are similarly supported at their ends on mountings 147 and 148 carried on a rigid carrier base or cradle structure 151'). Each of such power plants with its cradle and mountings is movable as a unit endwise through opposite openings E in the sides of the locomotive as indicated by dotted lines rice in Fig. l. The cradle structures are similar and include a pair of channel members 152, extending longitudinally of the associated power plant, and brace members 154 having upstanding ends and extending transversely between and welded at their sides to the channel members. The top flanges of the channel members are slit transversely adjacent one end and the end portions 156 are bent upwardlyy at an angle to each other. Angular rest plate 139 extends across the cradle and is welded on the bent up en-d portions 156 of the channel top flanges and seat plates 157 are welded on portions 156. The channel members are reinforced by boxing members 149 under the bent up ends of the top anges. The upturned ends of member 154 at the other end of the cradle has curved recesses to accommodate a portion of the power unit. Supporting arms 151 are welded in and project from the channel members in'alignment with the two upturned ends of member 154 and each set of arms has acarrier angle bracket 153 welded thereon on which seat plates 196 are welded. The ends of the channels adjacent arms 151 are boxed in by plates 143. The lower flanges of cradle members 152 are formed with holes 169 for detachably securingy the auxiliary power unit to the ilooring by bolts or the like.

There are two similar resilient mountings 147, shown in detail in Figs. 3 to 5, for one end of each auxiliary power plant. `Each mounting 147 includes an anchor structure comprised of plate 173 adapted to be detachably fixed on seat plate 157 of the cradle, spaced plates 158 doweled to plate 173, spaced inverted L-shaped angle members 160 secured on the plates 158 and angularly disposed plates 162 xed at their upper ends to the tops of the angle members and at their bottom edges to plates 158. At the inner end of the plate 173 is welded a vertical plate 164 extending longitudinally of the power unit. An upper carrier structure is comprised of plate 166 having a depending flange 168 parallel to plate 164, plate 170 mounted on plate 166, and an angle member 172 having its arms parallel with plates 162, secured to the underface of plate 1.66. Resilient units comprised of rubber 174 bonded to metal plates 176 are arranged between and bonded to ange 168 and plate 1,64 and between angularly disposed plates 162 and angle member 172. The units are secured between flange 168 and plate 164 by bolts 178 and 179 and between angle member 172 and plates 162 by bolts 180 and 181. The

` resilient-portion of the units are in shear and damp transverse and vertical vibrations of the power unit. Vertical vibration of the power unit is also damped by rubber strips 182 and 184 located respectively below the top anges of members 160 and above plate 166. Metal strips 186 lie over rubber strips 184 and metal strips 188 lie under strips 182. Bolts 190 secure the strips in position with plates 166 and angle members 160. Such mounting provides a iloating support for limiting movement of and damping vibrations at the exciter ends of the auxiliary engines. The auxiliary engines have bracket arms 192 suitably secured on plates 170.

There are two similar resilient mountings 148, shown in detail in Figs. 7 to 9, for the end remote from the exciter in each auxiliary power unit. The anchor structure for each mounting 148 includes plates 175 detach ably secured on seat plate 196, spaced plates 198 doweled on plates 175, inverted L-shaped members 260 secured to plates 198, angularly disposed plates 282 secured to plates 198 and the upper ends of the L-shaped members and vertical plate 204 secured across the front end of plate 175. The carrier structure for each mounting 14S comprises plat-e 2116 having a depending front ange 208, an angular member 207 secured to the underface of plate 206 and an elevated rest member 210 fixed on top of plate 206. Resilient units comprised of sheet rubber 212 bonded to plates 214 are arranged between angle plates 202 and angular member 207 and secured in such relation by bolts 216 and 217. Similar units are arranged between iiange `20S and plate 204 and are so secured by bolts 218 and 219. Rubber strips 220 are placed on the top side edgc portions of plate 206 and rubber strips 222 are lplaced beneath the top flange of members 200. Metal strips 224 lie Outside of the rubber strips and bolts 226 secure the strips in the position described. The engine legs 228 are secured on members 210 and strips 220 and 222 act as snubbers to limit vertical movement of the carrier structure. Resilient units between the angular member and angular plates are in shear and act as vibration dampers between the carrier and mounting structures. The resilient units between ange 208 and plate 204 limit longitudinal movement of the carrier structure and damp vibration.

The auxiliary power units are mounted on rubber and so that they will oat` Lines at right angles to plates 175 of mountings 14S of each power unit will intersect substantially on the longitudinal center line of the auxiliary power units and with mountings 147 will provide a three point support to allow limited rotation of the power unit on its normal rotation center resulting from operational forces. As previously stated, these auxiliary power units, their cradle and mountings can be removed and inserted through the side of the locomotive as a unitary structure when the means for fastening the cradle to the iioor is detached. The rear auxiliary power unit can be moved endwise through the side locomotive opening after being shifted to a position slightly behind its mounted position but to remove or insert the forward auxiliary power unit endwise from the locomotive it is necessary to detach portions of thelocomotive side structure and, for this purpose, such structure is assembled so as to be readily detachable.

All connections between the power units C and D and locomotive parts with which they are associated are of a nature that will prevent engine vibration from being transmitted thereto and they are also disconnectable to allow removal of the units from the locomotive.

The invention may be modified in various respects as will occur to those skilled in the art and the exclusive use of all modifications as come within the scope of the appended claims is contemplated.

What is claimed is:

1. An engine cradle comprising a pair of spaced parallel channel members disposed with horizontal outwardly extending upper and lower anges, plate tie members extending horizontally between said channel members adjacent the ends thereof and secured thereto at the inner ends of said lower anges, said upper flanges being transversely slotted adjacent one end of the cradle and said lower anges extending beyond said upper anges at the other end of said cradle, the free end portions of said upper flanges at the slotted ends thereof being similarly bent upwardly, a V-shaped mounting supporting plate seated on and secured to said free end portions of said upper flanges, a pair of resilient engine mountings secured to the opposite sides of said V-shaped mounting supporting plate adapted to support'one end of an engine, angle bracket means secured to said lower cradle anges at the end of said cradle opposite said V-shaped mounting supporting plate and beyond said upper flanges, a second pair of resilient engine mountings secured respectively to said angle bracket means and adapted to support the other end of said engine, and upwardly extending flanges on said plate tie members extending transversely of said channel members at the respective ends thereof and secured thereto to reinforce said cradle.

2. An engine cradle according to claim 1, wherein each of the resilient engine mountings comprises a base member, spaced supporting plates secured to said base member, an angle member upstanding from each of said plates and having outwardly extending anges, angularly disposed plate members welded to the inner edges of said plates and to the angle members at the uppermost portion thereof, a carrier plate above and parallel to the supporting plates, a V-shaped member welded to the underside of the carrier plate each leg thereof being parallel to one of said angularly disposed plate members, and rubber units between and fixed to the legs of the V shaped member and the angularly disposed plate members.

3. An engine cradle according to claim 2, wherein resilient snubber means are connected to the outwardly extending angle member anges and the carrier plate.

References Cited in the tile of this patent UNITED STATES PATENTS 1,686,578 Slack Oct. 9, 1928 1,729,394 Lee Sept. 24, 1929 1,822,026 Guy Sept. 8, 1931 1,887,862 Simen Nov. 15, 1932 2,044,023 Trott `Tune 16, 1936 2,195,873 Lord et al. Apr. 2, 1940 2,198,672 Lee Apr. 30, 1940 2,546,722 Carter Mar. 27,1951

FOREIGN PATENTS 431,874 Great Britain Aug. 22, 1934

Images