US3163127A - Cushion container support platform for railroad flatcars - Google Patents

Cushion container support platform for railroad flatcars Download PDF

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Publication number
US3163127A
US3163127A US36222A US3622260A US3163127A US 3163127 A US3163127 A US 3163127A US 36222 A US36222 A US 36222A US 3622260 A US3622260 A US 3622260A US 3163127 A US3163127 A US 3163127A
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United States
Prior art keywords
members
cushioning
car
rack
cushion
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US36222A
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English (en)
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Jack E Gutridge
Jack W Broger
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Pullman Inc
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Pullman Inc
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Priority to NL262123D priority Critical patent/NL262123A/xx
Application filed by Pullman Inc filed Critical Pullman Inc
Priority to US36222A priority patent/US3163127A/en
Priority to GB630/61A priority patent/GB951095A/en
Priority to FR853249A priority patent/FR1285500A/fr
Priority to CH210761A priority patent/CH371474A/fr
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Publication of US3163127A publication Critical patent/US3163127A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P7/00—Securing or covering of load on vehicles
    • B60P7/06—Securing of load
    • B60P7/13—Securing freight containers or forwarding containers on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D3/00—Wagons or vans
    • B61D3/16—Wagons or vans adapted for carrying special loads
    • B61D3/20—Wagons or vans adapted for carrying special loads for forwarding containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D45/00—Means or devices for securing or supporting the cargo, including protection against shocks
    • B61D45/008—Shock absorbing devices

Definitions

  • the invention of said Peterson application Serial No. 856,963 provides a new approach to the protection of lading in transit on railroad cars, which is applicable to both standard railroad cars, such as boxcar-s and flatcars, as well as cars especially designed for piggyback and freight container systems of handling freight.
  • Said Peterson application discloses that damage free lading protection against longitudinal impacts (that is, impacts applied against the car couplers) can be obtained if there is interposed between the couplers and the car body containing the lading a cushioning device or arrangement having a cushion travel sufficient in capacity and length that the absolute velocity of the lading is changed to that required by the Law of Conservation of Momentum for Inelastic Bodies by employing to a substantial degree the frictional forces acting between the lading and the car, as distinguished from the compressive forces applied to the lading by the car end wall.
  • This novel approach is particularly applicable to resilient lading (goods packed in fibre boxes) and involves, among other things, extending the time of closure of the cushioning device employed sufficiently so that the changes that must occur to the absolute velocity of the lading (by reason of the aforementioned Law of Conservation of Momentum) occur to the lading as a unit.
  • the length of travel found essential for U8. railroad practices is in the range of 20-40 inches, and preferably is on the order of 30 inches.
  • Said Peterson application further discloses that the benefits of his invention may be employed in practicing container systems of handling freight by mounting on a standard fiatcar, platform or carriage on which the freight container is supported, and interposing between the platform or carriage and the bed of the fiatcar a cushioning device of the character contemplated by the Peterson invention.
  • Our invention relates to a specific embodiment of such an arrangement.
  • container systems of transporting freight, employing demountable containers have received considerable attention because of increased economies in the use of equipment and improved service to shippers. This is particularly true with regard to less than carload shipments.
  • container systems heretofore pro posed have in general failed to make adequate provision to protect container lading from the adverse affects of longitudinal shocks during railroad transit.
  • Other objects of the invention are to provide an improved cushioning arrangement for container support platforms or racks, to provide an improved cushioned rack arrangement especially suited for adaptation to the piggyback system of handling freight, to provide a trailer hitch arrangement for securing trailers to the cushioned racl; of this invention which is arranged to permit trailer end loading of the car as well as alternate use of the rack for handling freight containers, and to provide freight handling equipment that is inexpensive of manufacture, convenient in use, and applicable to standard rail equipment without material modification thereof.
  • FIGURE 1 is a diagrammatic exploded perspective view illustrating largely in block diagram form the type of equipmentfto which our invention relates, showing also a type of container adapted to be associated with the cushioned rack component, a trailer chassis adapted to carry the container for highway transit, and suitable latching devices for latching the container to both the chassis and the rack;
  • FIGURES 2 and 3 diagrammatically illustrate two alternate ways of loading the standard flatcar of FIGURE new" 1 that are made possible by the cushion rack arrangement of this invention;
  • FIGURE 4 is a diagrammatic perspective view of a specific form of our cushioned rack or platform, showing it vertically displaced from a representation of a standard flatcar to better illustrate the manner in which it is mounted on the car;
  • FIGURE 5 is a fragmental enlarged plan View of a portion of one of the cushion assemblies employed in the embodiment of FIGURE 4;
  • FIGURE 6 is a fragmental sectional view along line 6-6 indicating in broken lines the manner in which the cushion device of the cushion assembly is positioned against the cushion assembly abutment members of the rack;
  • FIGURES 7 and 8 are plan and side elevational views respectively, of the cushion rack arrangement of FIG- URE 4, showing only the left hand half of the car, and with the showing of FIGURE 8 being partially in section;
  • FIGURE 9 is a diagrammatic fragmental elevational view of a splice arrangement for joining the adjacent sill members of the rack of this invention.
  • FIGURES l0 and 11 are plan and side elevational views of the embodiment of FIGURE 4, showing only the right hand half of the car structure, and with the showing of FIGURE 11 being partially in section;
  • FIGURE 12 is a diagrammatic cross-sectional view substantially along line 1212 of FIGURE 7;
  • FIGURE 13 is a fragmental sectional view substantially along line 13-43 of FIGURE
  • FIGURE 14 is a diagrammatic perspective view indicating the basic features of the dual cushion arrange ments we have employed in connection with the embodiment of FIGURE 4;
  • FIGURE 15 is a diagrammatic fragmental sectional view substantially along line 15-45 of FIGURE 14;
  • FIGURE 16 is a diagrammatic perspective view of a cushioned rack or platform that is similar to that of FIG- URE 4, but is adapted for use on' fiatcars already having a fifth wheel stand assembly attached thereto, also showing several containers adapted to be carried by the modified form of rack or platform;
  • FIGURE 16a is a fragmental sectional view of the cushion device employed in the arrangement of FIG- URE 16;
  • FIGURE 17 is a fragmental diagrammatic perspective view illustrating a container support bracket arrangement of a type that may be employed in connection with this invention.
  • FIGURE 18 is a sectional view along line 1818 of FIGURE 17;
  • FIGURE 19 is a fragmental sectional view along line 1919 of FIGURE 7, illustrating the antifriction rack or platform guide assemblies employed in connection with this invention
  • FIGURE 20 is a diagrammatic exploded perspective view of the movement guide assembly shown in FIG- URE 19;
  • FIGURE 21 is a diagrammatic perspective view, in section, of the hydraulic cushion unit employed in connection with this invention, showing same in extended position;
  • FIGURE 22 is a perspective view of the same hydraulic cushion unit, but showing same in contracted relation.
  • reference numeral 10 generally indicates a standard railroad liatcar having applied thereto a cushion container support platform carriage or rack 12, which is adapted to carry freight containers, and which is slidably mounted on spaced antifriction bracket assemblies 14 fixed to car deck 15 that serve the purpose of guiding the movement of the carriage or rack 12 when the impetus of coupler impacts is being dissipated and when the carriage or rack 12 is being returned to its normal load carrying position.
  • the carriage or rack 12 of FIGURE 1 is of the type described in the copending application of Jack E. Gutridge, Serial No. 21,331, filed April 11, 1960 (the disclosure of which is hereby incorporated herein by this reference) and comprises spaced side sills 16 joined together by suitable transversely extending members 18, and the rack or platform 12 includes a cushion pocket 2% that is adapted to receive a hydraulic cushion device 22 (see FIGURES 21 and '22) of the type described in the copending application of Vvilliam H. Peterson, Serial No. 782,786, filed December 24, 1958, now Patent 3,035,- 827, granted lvlay 22, 1962 (the entire disclosure of which is hereby incorporated herein by this reference).
  • the cushion device 22 is a dissipative energy system type constant force travel long travel cushioning mechanism arranged to transfer and dissipate substantially all kinetic energy imposed upon the flatcar by draft and buff forces applied to one of the car couplers (in excess of the minor amount absorbed by the draft gear and return springs of the device 22) leaving no excess energy to cause lading damage.
  • the cushion Device 22 is interposed between spaced stop members 24 affixed to the car it and spaced lugs 26 carried by the rack or carriage 12 adjacent each end of the cushion pocket 2d.
  • the cushion device 2 2 includes follower elements 28 that respectively bear against the respective sets of lugs and stops Z4- and 26.
  • the rack or carriage 12 of FIGURE 1 also includes a spring pocket 30 in which a booster spring 3?. is interposed between a second set of stop members 24 and lugs 26- for purposes of supplementing the return action of the hydraulic cushioning device 22.
  • Spring 2 may be associated with suitable spring seats
  • the rack 12 in the showing of FIGURE 1 is provided with suitable latching devices for latching a container to a rack when, for instwce, the loading arrangement of FIGURE a is to be employed, which latching devices may include the familiar form of bracket structure 34 including a cone-shaped protuberance 36 that is adapted to he received in the recess 38 formed in the undersurface of freight container 41% that is adapted to be mounted on rack 12.
  • bracket structures 34 and recesses 35 of the containers 4% are given a standard lateral and longitudinal spacing so that the containers may be interchangeably mounted either on the rack 12 or on the highway vehicle chassis generally indicated at 42 in FIGURE 1.
  • bracket structures 3d are spaced apart laterally of the car a distance corresponding to the normal spacing between the sill members 44 of the chassis and the sill members 16 of rack 12- are given a similar spacing, all this being disclosed in said Gutridge application Serial No. 21,331.
  • the spacing of the chassis sill members as is limited by regulations dealing with the spacing between the chassis wheels 46, and by giving the sill members 16 a spacing corresponding to the spacing of the chassis sill members piggyback loading procedures may be employed in connection with car It) since the chassis wheels 46 will ride on either side of rack 16.
  • car It will not interfere with standard piggyback procedures when incorporated in a train with other ilatcars that are to be used piggyback service, and further, a car it may be employed in piggyback service, for instance, in the manner indicated in FIGURE 3, as the rack 12 is provided with retractable fifth wheel stand assemblies 59 for the purpose of securing, for instance, trailer 52 of FIGURE 3 to the rack or carriage 12.
  • the stand 59 comprises a latching device 54 adapted to be supported by tripod type prop structure 56 when trailer 52 is applied to car It).
  • the latch device 54 is arranged to be secured to the kingpin of trailer 52, for instance, as shown at 58 on container it and as brought out in our said concurrently filed application Serial No.
  • rep structure comprises three spaced telescoping strut assemblies so, 61 and s2 (see FIGURE 7) which are connected to the kingpin latch device by the ball and socket joint assemblies as, 63 and 6d that are diagrammatically illustrated in the drawings, said strut assemblies being connected to the rack or carriage 12 by similar ball and socket joint assemblies 66, 67 and 68, respectively.
  • the freight handling equipment of FIGURE 1 may be employed for carrying either trailers 52 or containers, such as container 4%), with the containers it) being conveniently crane lifted onto the rack 12 by employing the retractable eye assemblies 7%.
  • the rack 12- assumes the specific forms of FIGURES 4l6.
  • the improved rack 84 is applied to car liia and generally comprises a forward section 82, a center section 84, and a rearward section 86, joined together by the splice assemblies 88 illustrated in FIGURES 7-11 to define an elongate container support rack or platform of a general type shown in FIGURE 1.
  • the rack 8b is defined by composite sill members 16a which have the lateral spacing previously described and are made up by I beams 99 that form the individual frame sections.
  • the I beams 99 of each section are fixed together in spaced apart relation by suitable transverse cross ties 92 which have a channel-shaped cross-sectional configuration in the illustrated embodiments.
  • the I beams 5 0 of the forward and rearward sections are also joined together by the dual cushion assembly arrangements generally indicated by reference numeral 94, which are employed to provide the long travel cushioning characteristics contemplated by said Peterson application Serial No. 856,963.
  • the arrangements 94 each comprise a pair of cushioning assemblies 96 interposed between spaced transversely extending brace members $8 that are rigidly connected be tween the I beams 9i? of the forward and rearward sections 82 and 86.
  • the cushioning assemblies of one of the cushioning arrangements 94 are equipped with the cushion devices 22, while the other cushioning arrangement may be equipped with the booster return springs 32.
  • each of the cushioning assemblies 95 includes a pair of abutment members 1 that are spaced from each other longitudinally of the car and abut against the respective brace members 93.
  • the cushion device 22 illustrated, in the cushioning arrangement where employed, includes follower members to: that are pressed against the ends 1W; of abutment members 160 that face each other, and tie followers 1% also engage stop members res that are lined to the car bed 15.
  • the booster spring 32 is employed in place of the cushion devices 22, but included are the same abutment members 106, and followers 1&2.
  • abutment member 1% corresponds to the lugs 26 of FIGURE 1 while the 6 stop members 1% correspond to the stop members 24 of FIGURE 1.
  • the rack or platform in? is provided with two fifth wheel stand assemblies 55d, which are secured to the forward and central rack sections in association with appropriate transversely extending cross tie members lltl.
  • An additional cross tie member 112 is provided on which the kingpin latching device 54 rests in the retracted position of the stand.
  • the stand assemblies 50 are arranged so that they lie within the horizontal plane of rack till in their retracted positions so that they do not interfere with 'tne application of containers 40 to the rack (see FIGURE ll).
  • the container support bracket structures 34 are afiixed to rack till in accordance with the spacing already described.
  • the container latch devices with which bracket structures 34 are associated are depicted in FIGURES l7 and 18.
  • the rack tit is supported on car Mia and guided by the antifriction bracket devices 14, the structural features of which are diagrammatically illustrated in FIG- URES 19 and 20.
  • the car Illa may be loaded by applying containers ll to the rack of platform t? to provide, for instance, the arrangement of FIGURE 2, it being understood that the bracket structures 34 may be positioned along sills 16a as desired to provide any preferred container support arrangement for either relatively long or relatively short containers.
  • the bracket structures 34- not used may be swung to one side as the bracket structures 34 are hinged in place and latched against swinging movement by removable pins 112 (see FIGURE 18).
  • one or both of the fifth wheel stands 54 may be employed to secure trailers such as trailer 52 to the car lilo, and this may be done either by crane lifting a trailer onto the car or by employing the standard piggyback end loading procedure.
  • the car 18a is positioned as customary for such procedures so that the trailer can be backed onto the car Illa from a suitable loading ramp at the end of a string of cars of which car 19a will form a part.
  • the trailer 52 is backed until its kingpin. is approximately positioned over a stand assembly 5% after which the trailer is lowered onto its landing gear 122 (see FIGURE 3) and then disconnected-from its tractor after which the tractor is removed.
  • the stand assembly Sill permits an operator to manually lift the kingpin latching device 54 rom its lowered retracted position into operative engagement with the kingpin 58, the ball and socket joint assemblies permitting limited adjustment laterally and longitudinally of the cars as may be required to properly seat the kingpin within the latch device 54.
  • the tubular strut assemblies as, 61 and d2 are secured in their extended positions, as by employing appropriate latch pins that are applied between aligned holes and the telescoping members 123 and 125 that make up the respective strut assemblies.
  • the kingpin latching devices 54 are latched and keyed to the trailer kingpin by employing the latch arrangement disclosed in our said concurrently file-d application Serial No. 36,310.
  • the landing gear 122 that illustrated is intended to represent any suitable retractable landing gear
  • the landing gear 122 of the trailer is then retracted to rest the forward end of the trailer on the stand 5% and this permits the long travel cushioning arrangement of FIG- URES 415 to protect the lading of the containers 52 when coupler impacts are occasioned, in accordance with the teaching of said Peterson application Serial No. 856,- 963.
  • the trailer is disconnected from the stand ill by sub-- stantially reversing the locking procedure above outlined.
  • the stand is initially raised to an elevated. position to approximate the height required to support the front end of the trailer above the bed of car 13:: Without resting it on its landing gear.
  • a suitable crane is employed to lift the trailer 52, from a loading point alongside the car to a position above the car 1th: with the trailer kingpin more or less aligned with latching device 54-.
  • the trailer is then lowered to bring the kingpin 58 into engagement with the latch device 54, after which the latch device is secured to the kingpin in accordance with the invention of our said application Serial No. 36,310, filed June 15, 1960.
  • the absolute velocity of the platform or carriage 8b is initially unaffected by the impact, but the pressure of the hydraulic device closure member 132 acting on the right hand abutment member 10% gradually transfers the kinetic energy of the impact to the platform or carriage 8d and its load.
  • the cushion device continues to close until its parts have the operative relation indicated by FEGURE 22, at which time the containers and/or trailers and the platform or carriage 89 have the ultimate velocity dictated by the aforementioned Law of Conservation of lilomentiun.
  • springs 13d acting in tandem on closure members 139 and 132 restore the platform or carriage 8i and the containers and/or trailers to their normal centralized positions with respect to the car llla.
  • FIGURE 16 illustrates a modified form of cushion rack or platform a which is adapted for application to the car 10!) which already has applied thereto conventional fifth wheel stands 135.
  • the rack or platform 843a is mounted on bracket assemblies 14 in nesting relation to stands 135 and includes the sill members 16a, the cross ties 92 joining them together, the container support bracket structures 34, and it is made up of sections 82a, 84a and 86a that are similar to the corresponding sections 82, 84 and 86 of rack or platform These sec tions are joined together by splice assemblies 83a that are identical with splice assemblies $3.
  • the dual cushion assembly arrangements indicated at 136 are structurally similar to arrangements 94 except that they are arranged for use in connection with shorter travel cushioning devices.
  • the individual cushioning assemblies will thus include the abutment members lllda and the stop members Idea, as well as followers 1&2, the rubber cushioning devices 14% being interposed between the follower members 102.
  • the cushioning devices lid-l) may be of the well known type that includes a plurality of rubber pads 1.41 separated by metal separator plates 243, which are customarily assembled on rod 143, as is well known in the art
  • the arrangement of FIGURE 16 will not provide the benefits described in Peterson application Serial No. 856,- 963 with respect to resilient lading, but lading that is of a more rigid type, or which is securely anchored to the containers or trailers will be adequately protected by this particular embodiment of the invention.
  • the railroad fiatcars to which our invention may be applied may be of any standard make and the cars 1 3a and ltb are intended to represent any convenient form of fiatcar which is not of the type that has a cushion underframe or cushioned body arranged to provide the long travel cushioning action of said Peterson application Serial No. 856,963.
  • the splice assemblies 38 for securing the sections of rack 86 together each comprise pair of plates lit (see FIGURES 7 and 9) having their tapering ends 151 welded to the ends of the respective l beams 99 that form the center section 84.
  • T he end sections 32 and 86 may be conveniently assembled to the center section by positioning their respective I beam webs 15.2 between the respective projecting ends 153 of the plates 59 and then applying appropriate bolts 154 through holes formed in these members to fix the splice plates to the l beams of the respective end sections.
  • the brace members 1'3 defining the limits of the respective cushioning arrangements 94 comprise l beams 155 that are fixed between the webs 152 of the respective rack section I beams, as by welding.
  • the members 155 should be spaced sufilciently above the bottom flanges of the l beams 96 to avoid interference with the antifriction bracket devices 1 1, as indicated in FEGURES 6 and 15. This also applies to cross ties 92. (see FIGURE 12).
  • the abutment members lllld are generally channel shaped in cross-sectional configuration (see FlGURES 14 and 15) and are welded to the brace members 98 that they abut, as at 156. They are also afhxed to the webs 152 of the adjacent I beams 90 by welding tie plates 157 between the two. Abutment members still have relatively short sides 3153 to avoid interference with the adjacent antifriction bracket assemblies 14 (see FIGURE 15), and their sides 159 are provided with a laterally extending inwardly directed reinforcing flange 160.
  • the follower members 16?. in the form of FIGURES 4-15 are illustrated as quadrilateral metal plates 16! which abut against the respective ends 1&4 of the respective abutment members Hill.
  • the cushion devices 22 in the form of FIGURES 4l5 are shown as having aflixed to their closure members ldll and 132 seating projections 163, which pass through openings 16% formed in follower plates 161 and are received in slots 164 that are formed in stop members res.
  • Individual stop members we each comprise a pair of spaced lugs 171 fixed to the car deck as by welding, and
  • a tie plate 176 which are joined together by a tie plate 176 and an abutment plate 165 that is likewise fixed to the car deck, with the slot 166 being formed in said abutment plates 1.55.
  • the abutment members 199 are formed with recesses 167 to accommodate the projections 153 when placing the specific cushions 22 illustrated in operating position, which openings 167 may be closed by suitable retainer plates 163 shifted in place as by weiding.
  • the specific cushion devices 22 are shown in association with seating projections 163 and abutment plates 1112 as this makes such cushions interchangeable with rubber pad cushions 140, wherein the pads 141 and separator" plates 142 are assembled together with follower plates 1132 on rod 143.
  • the abutment members 100 and 199a are made sufiiciently long, and brace members he are spaced sufiiciently far apart to permit the indicated relative movement of racks 80 or 81311 with respect to the car Ida or 1% (and in particular, the stop members 166 affixed thereto), that is necessary depending on which cushion device is to be employed.
  • the rack or platform 8% may be considered the same as rack or platform 89, except for the differences illustrated and noted, as indicated by corresponding reference numerals.
  • the cushioning devices 22 will be mounted in suitable housings extending between the abutment members 1% to provide a guiding action on the cushion devices as they move between extended and contracted positions.
  • housing arrangement may take any suitable form.
  • follower plates 102 may be eliminated, when devices 22 are employed, where their closure members 13! and 132 are proportioned to properly engage abutment members 169 and stop members 1136, and, of course, projections 153 may be elimi nated if so desired, all as indicated in FIGURES 21 and 22.
  • the supporting members 11% and 112 of stand assemblies 56 may be formed as necessary and desirable to avoid interference with antifriction bracket assemblies 14 (see, for instance, FIGURE 12).
  • the bracket structures 34 form a part of the well known type of latching device generally indicated at 172 in F1 URE 17, which includes the cone-shaped protuberance 36 that is adapted to be received in the recess 38 of the container.
  • Latching devices 172 also include a suitable pin 173 that is adapted to be received through holes 174 and 175 of the bracket structure and container, respectively, to secure the two together, the pin being screw threaded into position in the container or being held in place by a suitable pivoted spring latch diagrammatically illustrated at 176.
  • bracket structures 34 are applied to the rack or platform 80 in transversely disposed pairs, and a standard spacing longitudinally of the chassis frame members and platform or rack sill members is employed between the pairs of bracket structures, such as that required for supporting a container having a nominal 20 foot length.
  • the actual containers are 19 foot 9 inches in length, and the pairs of container support brackets and their corresponding recesses in the undersurface of the container are spaced apart on centers 19 feet 2 inches apart, but this spacing and the container size employed are optional, as already indicated.
  • the container support brackets 34 that are located intermediate the points where full length container ends will be supported each have aifixed thereto at diametri' caily opposed edges thereof, lugs 178 that are adapted for hinging alignment with complementary lugs 179 fixed to mounting plates 13% that are in turn fixed to either side of the respective beams 91
  • the lugs 178 and 179 are pivoted together by suitable pins 183, which arepreferably made removable so that the bracket structure 134 may be pivoted to one side or the other of the perspec- Cir 1Q tive beams 96 when necessary.
  • Pins 183 may be held in place by suitable cotter pins 181, or any other suitable manner.
  • the remaining bnackets 34 are fixed directly to the respective beams 99.
  • a container 40 may beapplied to a chassis 42 by a crane, with the chassis bracket structure 34 being received in the recesses 33 of the container body and the pins 1'73 applied to the respective bracket'structures and containerbody recesses to complete the respective latching devices 172 for securing the container to the chassis; body 411 has been previously loaded, the highway vehicle is then driven to a suitable railroad yard for application to car 1%.
  • the latching devices 1'72 are unlatched and the appropriate support brackets 34 of the car are positioned to receive the container when it is crane lifted from the highway chassis onto the platform or carriage 80, after which the latching assemblies 8d are again completed by employing suitable pins 173 to the respective container body recesses and the platform or carriage bracket structures as before described.
  • containers may be arranged on the car in any desired manner consistent with the length of the containers and the need for carrying a trailer piggyback fashion on the car 1%.
  • the support bracket structures not inu'se may be swung to one side at points along the rack Where they will be positioned underneath a container that will extend beyond lthem.
  • the antifriction bracket devices 14- generaily comprise a movement guide device 185 which forms a retainer for an amtifrioti'on pad 186 on Which the rack 81) actuallyrides (see FIG URES 6 and 15).
  • the pads 186 are preferably formed from a TFE fluorocarbon resin, known as Teflon, made and sold by E. I. du Pont de Nemours & Co., Inc.
  • Each pad 186 (see FIGURE 20) is of parallelepiped configuration and is affixed by a suitable adhesive to a bearing block 1'87 that includes a spherically contoured convex surface 183 which is received in a complementary spherically conof car 16a as by welding, and a hooked arm 192 that V is to extend over the bottom flange 193 of the respective sill members 16a supported by the bracket devices 14.
  • the individual guide devices 185 are preferably formed with the rounded opening 1% in the respective arms'192 for ease of applying the pad 186 and its hearing block 187to the individual guide devices 185.
  • Teflon is preferred for the antifriction pads as it has been found that it has relatively high frictional characteristics when the platforms 8%) or a are moved over the pads at relatively high speeds during the dissipation of an impact, while at the same time evidencing low frictional characteristics when these container .ipport platforms are being returned to their normal positioning at low speed by the cushion springs and Assuming that the container the booster springs afiter the impetus of an impact has been dissipated.
  • the guide devices 185 are applied to the car underframe to define the path of movement desired for the platform or rack with respect to the car ltla.
  • the spherically contoured surfaces 183 and 139 provide the pad with a self-centering action so that surface 190 Will be in full contact with the undersurface of the respective sill members 16a in spite of minor tolerance variations.
  • the relative spacing of the antifriction bracket devices 14 is optional, though an appropriate spacing is indicated in FIGURES 7, 8, 10 and 11.
  • FIGURES 7, 8, 10 and 11 show a specific arrangement for an foot flatcar of standard make in which the rack sections are each 27 feet 4 inches in length.
  • the sill members 16a may be spaced apart a distance in the range of 34 to 40 inches, measuring from their outer extremities, as this is the range of spacing normally employed for the longitudinal framing members of highway vehicle chassis.
  • FIGURES 16 and 16a Similar remarks apply to the embodiment of FIGURES 16 and 16a with'regard to latch devices 172, antifriction guide devices 14 and the lateral spacing of sill members 16a.
  • the hydraulic cushion device 22 is preferably that described in the copending application of William H. Peterson, Serial No. 782,786, now Patent No. 3,035,827, granted May 22, 1962 or that described in application Serial No. 9,785, filed February 19, 1960, now Patent 3,035,714, granted May 22, 1962 by the same inventor, the entire disclosure of the latter being also hereby incorporated herein by this reference.
  • the device 22 is a dissipative energy system type constant force travel long travel cushioning mechanism arranged to transfer and dissipate substantially all kinetic energy imposed upon the car 1% by draft and butt forces applied to the car couplers (in exces of the minor amounts I absorbed by the draft gear and return springs of the devices 22).
  • device 22 is a percent efiicient cushion travel device, meaning that it transfers and dissipates the required energy with minimum travel and with no uncontrolled recoil.
  • the cushioning device 22 should have a travel of from about 20 inches to about 40 inches, or its equivalent, and be characterized by its abilityto dissipate a sufiicient amount of the energy of impact (other than that portion of such energy needed to recenter the cushioning device), either on closing of the device, or on closing and return of the device (note that the restricted flow of hydraulic liquid in cushioning device 22 on its return to normal is energy dissipating and thus cushion 22 has controlled recoil), so that the major portion of the remaining energy of impact is transmitted as kinetic energy to the load.
  • the time required for the transfer of, for instance, the momentum of a striking car to a struck car is prolonged sufticiently to achieve the aforedescribed benefits that are disclosed in said Peterson application Serial No. 856,963.
  • the devices 22 illustrated each generally comprise (sce FIGURES 21 and 22) a tubular cylinder 25"?) in which a piston head 29.1 is reciprocably mounted, a tubular piston rod 2532 afiixed to piston head Elli, an invaginating tubular member or boot 2%? connected between the tubular cylinder 26% and the tubular piston rod 2&2, and the helical compression springs 134 that extend between the closure members and 132 of the tubular cylinder 2% and piston rod 232 and a spring seat 2%.
  • the closure member 132 of tubular cylinder 20% carries a metering pin 299 that is reciprocably received Within the bore 216 of the tubular piston rod 2 32.
  • the metering pin 269 is preferably provided with a guide member 211 when the cushion of Peterson application Serial No. 782,786 is employed.
  • the internal surface 212 of tubular cylinder 2% is formed in a .y suitable manner as at 213 to receive three snap rings 2%, 216 and 228.
  • the snap ring 21% serves as a stop for piston head 281 when the device is in its extended position of FEGURE 21, While the snap rings 216 and 218 hold in place a piston rod guide member 220 to which one end 222 of the invaginatiug boot or tubular member 237 is secured by a suitable clamp 224.
  • the other end 226 of the boot or tubular member 267 is turned outside in, and is secured to the external surface 228 of the piston rod 66 by a suitable clamp 23%.
  • the device 22 is charged with hydraulic liquid as de scribed in said copending application Serial No. 782,786 to completely fill the space defined by the tubular cylinder 2%, the tubular piston rod 292, and the invaginating boot or tubular member 207.
  • the device 22 When in use, the device 22 has the normal positioning indicated in FIGURE 21, and in the illustrated arrangement, the device 22 (in the showing of FIGURES 21 and 22) engages the abutment members 1439 and stop members 1&6 at both ends of cushioning assemblies 96.
  • metering pin 299 is provided with a tapered surface 234 that preferably is designed to provide a constant force travel characteristic as the hydraulic cushion 22 contracts under the shock opposed on it; that is, the arrangement is such that for every unit or" travel, the cushioning device provides a substantially constant cushioning effect.
  • the oil flow then initiated is from the chamber 236 on the high pressure side of the piston head 201 through the orifice 232 and into the bore 210 of tubular piston rod 202, thence radially outwardly of the piston rod 262 through orifices or ports 238 of the tubular piston rod 2G2.
  • the hydraulic liquid Within the tubular piston rod is displaced by the metering pin 2G9, it likewise moves through the ports 238, as indicated by the arrows in FlGURE 21.
  • Metering pin glide member 211 is formed with relatively large apertures 24% to permit a free flow of hydraulic liquid during movement of the metering pin.
  • the hydraulic liquid flow through ports 23% is under straight tapers, if this facilitates manufacture.
  • the high pressure chamber 236 is reduced in volume by the advancement of the piston head Zill toward the tubular cylinder closure member 132.
  • the hydraulic liquid passing through orifice 232 fills the chamber 242 behind the piston head 2%, while a volume of hydraulic liquid equivalent to that displaced by the total entry into the fluid chamber of the piston rod 262 passes through apertures 244 of guide member 223 into the space 246 enclosed by the invaginating boot or tubular member 2%? which inflates or expands and rolls to the position suggested by FIGURE 22.
  • the apertures 244 are relatively large in cross-sectional area which provides and permits the-relatively large volume and consequently low pressure hydraulic liquid flow from chamber 242 to space 246 This avoids generation of any appreciable compressive force on the relatively slender metering pin and prevents any possibility of it buckling.
  • the compression springs 13 i acting in tandem, return the hydraulic cushioning components to the initial extended position of FIGURE 21.
  • the oil flow illustrated in FIGURE 21 is reversed, and invaginating tubular member or boot 2437 defiates and returns to the posi tion of FIGURE 21 thereby insuring that the hydraulic liquid displaced by the piston head 201 and piston rod 292 is restored to its normal operative locations.
  • the orifice areas referred to are the orifice areas of orifice 232 minus the cross-sectional area of the metering pin at any given position along the stroke of the metering pin.
  • the components of the unit 22 may be formed from any suitable materials, boot 207 in the illustrated embodiment being formed from suitable impervious, flexible, rubber-like materials with special additives for low tempcrature flexibility and clamps 2-24- and 230 being of the type of clamp sold under the trademark PUNCH-LOX, made and sold by the Punch-lok Company of Chicago, Illinois.
  • the unit 22 of the illustrated embodiment may be charged with any appropriate high viscosity indexed liquid, such as the oil sold by Shell Oil Company under the trade designation AEROSHELL No. 4-, as such,
  • liquids desirable have a relatively small variation in viscosity between the extremes of minus 60 degrees F. and degrees F.
  • the liquid employed should be of the type that will not attack the material from which boot 2%? is made.
  • the hydraulic liquid when the device 22 is in fully extended position is under very little pressure, perhaps no more than 2 p.s.i., but even though the pressures in the high pressure chamber 236 may rise to as much as 8,000 p.s.i., as when the device is employed in railroad cars to cushion buff and draft forces, the maximum pressure within the invaginating boot 297 (when fully inflated) is believed to be about 10 p.s.i. Boot 2d? stretches about 100 percent when fully inflated.
  • Units 22 can be designed for operating pressures up to the limit of the yield strength of cylinder 20% and the device of FIGURES 21 and 22 when employed as indicated, is capable of handling kinetic energy on the order of a million foot pounds, depending, of course, on the specific design required for a specific purpose. Units 22 will thus easily handle 15 mile per hour impacts when applied to for instance, the railroad car structures of FIGURES 1-15.
  • the stand is proportioned to lie within the plane of the' rack or platform in its retracted position so that containers may be secured to the platform or rack over it, and trailers may be driven along the full length of the rack or platform to move them from car tocar for loading and unloading purposes.
  • the rack or platform structure per se is simplified and in effect standardized for application to the different forms of cars, it only being necessary to provide the I beams 9t? and abutment members 100 in the length desired to suit conditions.
  • the rack is to be employed in connection with cars such as that shown in FIGURE 16, the distance between opposing abutment members may be shortened since only travels on the order of 10 inches in either direction will be permitted by the rubber cushioning devices-indicated in this figure.
  • highway vehicle chassis longitudinal frame member spacing as employed in the appended claims means the spacing customarily employed between the longitudinal frame members of highway trucks or chassis, which is in the range of between 34 and 40 inches.
  • Apparatus for handling freight comprising a railroad car :body, a carriage positioned on said body, means for mounting said carriage on said bed for movement longitudinally of said body, said carriage comprising a forward section, a center section, and a rearward section, said sections comprising spaced sills joined together by cross ties to have a highway vehicle chassis longitudinal frame member spacing, with said sills of said center section being aligned with and joined to the respective sills of said forward and rearward sections respectively, a cushioning assembly carried by said forward section adjacent the rearward end thereof and including a pair of cushioning devices spaced laterally of the car body and interposed between said forward section and the car body, a cushioning assembly carried by said rearward section adjacent the forward end thereof and including a pair of cushioning devices spaced laterally of the car body and interposed between said rearward section and the car body, said cushioning assemblies each comprising a.
  • abutment members each have a laterally directed flange along their inner, longitudinally extending edges for reinforcing purposes, and including a tie plate afiixed between the respective abutment members adjacent their cushion device contacting ends and the adjacent sill members of each of said sections, respectively.
  • said cushioning devices have a closure travel in the range of 20-40 inches and one of said pair of cushioning devices comprises a pair of dissipative energy system type cushion devices having closure characteristics equivalent to a substantially constant force travel closure in the range of E93 20-40 inch%, and wherein the other of said pair of cush' ioning devices comprises a pair of booster compression springs.
  • a railroad flatcar vehicle impact absorbing arrangement for protecting a load carried by said vehicle, said arrangement comprising a flatcar, a rack positioned on the fiatcar and comprising spaced elongate framing members extending longitudinally of the flatcar and connected together in parallel relation by spaced cross ties, means for mounting said rack on said car for movement longitudinally of the car, means for making the load fast to said members, said rack further comprising a pair of spaced cross members fixed between said framing members and extending perpendicular thereto, spaced pairs of abutment members respectively positioned adjacent to the respective framing members and 'With the abutment members of each pair of abutment members being aligned longitudinally of said framing members and spaced from each other, said abutment members of the respective pairs of abutment members being substantially channelshaped in transverse cross-sectional configuration with the open sides thereof facing the vehicle and having like ends abutting the respective cross members, a cushion device interposed between the other ends of the abutment members
  • stop members each comprise a pair of spaced lugs joined together by a bearing member, said bearing members contacting said cushioning devices, respectively, wherein said bearing members are formed with a vertical slot, and wherein the opposite ends of said cushioning devices are formed with a projection adapted to lodge in the respective bearing member slots when the respective cushion devices are in their operative positions in said arrangement.
  • Apparatus for handling freight comprising a railroad car body, a carriage positioned on said body, means for mounting said carriage on said body for movement longitudinally of said body, said carriage comprising a forward section, a center section, and a rearward section, said sections each com-prising spaced sills joined together by cross ties to have a highway vehicle chassis longitudinal frame member spacing, a cushioning assembly carried by said forward section adjacent the rearward end thereof and including a cushioning device operatively interposed between said forward section and the car body, a cushioning assembly carried by said rearward section adjacent the forward end thereof and including a cushioning device operatively interposed .between said rearward section and the car body, latch means for securing freight containers to said carriage, a fifth wheel stand assembly secured to said forward carriage section and carried by said section between said sills thereof adjacent the forward end thereof, and a fifth wheel stand assembly secured to said center carriage section and carried :by said center section between said sills thereof adjacent the rearward end thereof.
  • Apparatus for handling freight comprising a railroad car body, a carriage positioned on said body, means for mounting said carriage on said body for movement longitudinally of said body, said carriage comprising a forward ection, a center section, and a rearward section, said sections each comprising spaced sills joined together hy cross ties to have a highway vehicle chassis longitudinal frame member spacing, a cushioning assembly carried by saiforward section adjacent the rearward end thereof and including a cushioning device operatively interposed between said forward section and the car body, a cushioning assembly carried by said rearward section adjacent the forward end thereof and including a cushioning device operatively interposed between said rearward section and the car body, means for securing freight containers to said carriage, a fifth Wheel stand assembly secured to said forward carriage section and carried by said section between said sills thereof adjacent the forward end thereof, and a fifth wheel stand assembly secured to said center carriage section and carried by said center section between said sills thereof adjacent the rearward end thereof, said fifth wheel stand assemblies each comprising a

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Vibration Dampers (AREA)
US36222A 1960-06-15 1960-06-15 Cushion container support platform for railroad flatcars Expired - Lifetime US3163127A (en)

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Application Number Priority Date Filing Date Title
NL262123D NL262123A (ru) 1960-06-15
US36222A US3163127A (en) 1960-06-15 1960-06-15 Cushion container support platform for railroad flatcars
GB630/61A GB951095A (en) 1960-06-15 1961-01-06 Railway flat cars
FR853249A FR1285500A (fr) 1960-06-15 1961-02-20 Châssis intermédiaire amorti pour porter des containers sur un wagon-plateforme dechemin de fer
CH210761A CH371474A (fr) 1960-06-15 1961-02-22 Dispositif destiné à être monté sur un wagon plate-forme de chemin de fer pour supporter un chargement

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US36222A US3163127A (en) 1960-06-15 1960-06-15 Cushion container support platform for railroad flatcars

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US3163127A true US3163127A (en) 1964-12-29

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US (1) US3163127A (ru)
CH (1) CH371474A (ru)
GB (1) GB951095A (ru)
NL (1) NL262123A (ru)

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NL262123A (ru)
GB951095A (en) 1964-03-04
CH371474A (fr) 1963-08-31

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