ROTARY PARALLEL ARM LOADER AND SYSTEM

Cross Reference To Related Applications

This application is related to my pending application Serial No. 957,710, filed November 6, 1978.

Technical Field

It is an object to improve the loader of my patent No. 4,124,129, issued November 7, 1978, by moving the load pivots to the center line of the car for cargo containers or wide loads to reduce off balance loading on the vertical swivels to practically zero. It is a further object to provide parallelogram linkage arms to eliminate the sliding or lifting of the load arms on the pivot posts or columns. It is an object to eliminate the shock acceleration required by the straight-arm forks being engaged by side coupling latches. It is an object to eliminate the coupling latches on the car and the straight coupling fork on the loader and provide either a fork curved in on radius from load end pivot or a lobe or disc on the end of each arm of the loader to engage in an opening between pedestals, which are tapered or curved out toward the side of the car so the loader can be started and engaged in this coupling opening with large tolerance lengthwise the car, so the accuracy for timing start and acceleration is not critical, to grad¬ ually start the loader to enter the recesses on the car which couples it to gradually align it accurately for

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transfer as it progresses to lifting position.

An object is to eliminate the fork frame or load frame between the arms and provide a load turn¬ table on the end of each arm which has a disc wheel which rotates as it engages the side of a car. It is an object to provide low sides or safety curbs for the container cars and storage spots with openings only for the arms to enter for transfer. It is an object to provide locators on the pivot centers of the load turntables to align holes in the container on its length¬ wise centerline, so the turntables will not need align¬ ment rods to turn them to align under a load.

It is an object to improve the side coupling of the loader so the force on the coupling will be directed more favorably to move the loader even when the arms are at a lessor angle to the car, to reduce forces of coupling, to be able to side couple a loader that has its load arms close to parallel with the track, so the arms can be short, so the pivot posts can be closer to the track, so the loader can be mounted on a railway car and serve a track or storage row on each side. An object is to cut the cost and mass of the loader so it can be practically built to carry heavier loads and so its arms can rotate within a circle whose diameter is less than the space between chain or roller runs of a conveyor for supporting the load to interface with the loader.

It is an object to provide an improved passenger station for unloading and loading a train nonstop, a station which takes car bodies off railway cars' chassis as the train moves past and aligns them parallel in the station so people can leave through the end of the car at platform level after a car body with people at the opposite end of the station is put on the car chassis to recomplete the train for passenger

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passage through the train. It is an object to transfer dining cars, sleepers, coaches, mail, express, freight, auto-carrier cars, etc. this way to save switching costs and train time at stations. It is an object to transfer auto-carrying railway cars enroute nonstop at stations having passenger container-of-car transfer so passengers and their autos can be transferred to and from the train nonstop at intermediate points in route.

It is an object to align containers or cars end to platform for end loading to reduce platform and station size for a given capacity.

It is an object to provide hooks on the load arms so they can be engaged for transfer without the loader needing to be powered and further to provide re- tractable hooks on the loader so the arms can be spaced apart the same distance as on the powered loaders with¬ out hooks so cars can be used with either type of loader and vice versa.

It is an object to provide a loader adaptable to material handling or container, railway car body, or vehicle handling, to amusement park devices and to mini¬ ature sizes as models and toys.

Brief Description of the Drawings

These, other, and further objects and features and applications are attainable with this invention and should be obvious from study of this specification by those skilled in the art with reference to the drawings wherein:

Figure 1 is a plan view of a rotary load- unload station along a railroad with container being transferred from a car moving by left to right.

Figure 2 is a front elevation of the loader of Figure 1 lifting a container with the car not shown. Figure 3 is a side elevation of the car of Figure 1 with container in phantom.

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Figure 4 is an end view of the car with loader extended thereover to larger scale.

Figure 5 is a front, view of a rotary loader arm lifting on its cam track. Figure 6 is a broken front view of the drive for the loader to larger scale.

Figure 7 is a bottom view of a container.

Figure 8 is a plan view of a portion of a passenger train passing a station loader engaging a railway passenger car with separable body for transfer.

Figure 9 is a side elevation of the portion of the passenger train passing the station of Figure 8.

Figure 10 is a side elevation of the car en¬ gaged in Figure 8 after its body is lifted at the station. Figure 11 is a bottom view of the car's body.

Figure 12 is a perspective view of the car's chassis platform.

Figure 13 is an end view of the passenger car with its body on the loader to larger scale. Figures 14 and 15 are respectively plan and front elevation of a passenger railway station between tracks of a railway with two loaders connected by a con¬ veyor at each end with passenger car bodies thereon.

Figure 16 is a broken side elevation of an auto-carrier car body on a loader at a station.

Figure 17 is a plan view of a variation of the loader engaged with a railway car.

Figure 18 is a front elevation of the loader of Figure 17 with a container. Figure 19 is a perspective view of the loader of Figures 17-18.

Figure 20 is a plan view of a loader as in Figures 1-16 but without turntables.

Figure 21 is a plan view of a variation of the loader with back linkage, a load platform, and recess- able hooks.

Figures 22, 23,24, and 25 are respectively plan, side, back, and front views of an arm of the loader of Figure 21.

Figure 26 is a section on lines 26-26 of Figure 22 also showing the coupling hook end engaging the inside of the load support at the fork finger.

Figures 27 and 28 are plan and side views of the retractable fork finger on the loader to larger scale. Figure 29 is a schematic plan of an arm of the loader of Figures 21-28 in successive positions of engagement by a railway car.

Figure 30 is a plan view of a railway car mounted on a track between a railroad and station stor- age berths engaging a car in a train for a transfer of a container therefrom.

Figure 31 is a plan view of the loader after reaching out under the container on the car being en¬ gaged in Figure 30. Figure 32 is a plan view of the loader of

Figures 30 and 31 depositing the container in a station- ^' ary storage spot.

Figure 33 is a schematic transfer plan for the station Figures 30-32. Figure 34 is a side elevation of the loader car.

Figure 35 is a section on line 35-35 of Figure 31 with the loader extended under the container on the car to larger scale. Figure 36 is a front view taken on line 36-36 of Figure 32 to show loader arms over a storage berth. Figures 37 and 38 are partial sectional and side views of the loader car taken respectively on lines 37-37 and 38-38 of Figure 32 to larger scale. The loader in Figure 37 is rotated clockwise 50°.

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Figures 39, 40, and 41 are respectively plan, side, and right end views of a double jib loader on a dock along a railway with container ready to load on a car in a train. Figure 42 is an end elevation of a variation of the loader of Figures 39-41 lifting a container from a vehicle.

Description of the ^: Preferred Embodiment

Referring to the drawings and in particular to Figures 1-6, container transfer station TS, along railway track T has a two-arm rotary loader 18 reaching under container 20 on car 22 in train 24 passing the station left to right to unload the train and set the container down on parallel indexing conveyor 26 or in reverse to lift containers one at a time positioned by the conveyor to swing them parallel onto successive empty berths 27 in a train.

The loader has two round vertical pivot posts 28 embeded in concrete base 30, a concentric cam track 32 around each post, a sleeve 34 mounted on each post to rotate, a parallelogram load arm 36 extending from each sleeve and supported by wheel 38 on the cam track 32 about the post the arm is pivoted from to lift and lower one end of a load. A collar 40 is secured on each post under the sleeve 34 to support it. A beveled gear 42 is secured around the bottom of each sleeve 34 engag¬ ing a beveled gear 43 secured on a horizontal shaft 44 through a bearing 46 through the center of each post 28. Beveled gears 42 and 43 and shaft 44 connect the arms parallel. Shaft 44 is driven by a reversible spur- geared motor 48 through an overruning or magnetic clutch 49 and spur gears 50 and 51, Figure 6.

A turntable 52 on each arm 36 is centered at equal distance from the post about which its supporting

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ar rotates. Each arm 36 has a turntable support bracket 54 connected in a parallelogram linkage 56 by top bars 58 and bottom bars or channels 59 pivotally mounted at one end on parallel trunnions 60 secured to sleeve 34 and mounted on parallel pins 62 to the load bracket 54 to keep the turntable level when lifted. Bracket 54 extends out forward at top front with hori¬ zontal lobe 64 of rolled channel to support the turn¬ table to support an end of a load. Wheel 38 is mounted on axle 66 radial -between front and back walls of bracket 54 to roll the arm around track 32 -and lift and lower the arm on slope .in the track 32 where nearest track T and slope 60 90° counterclockwise therefrom to lift and lower the end of the load for transfer according to the direction the loader is ro¬ tated between a car 52 and conveyor 26. The lobe and turntable have the same diameter slightly larger than the width of the load and are spaced apart at a height to engage between pedestals 72 on bed 73 of car 22 which supports the ends of the container for the turntables to enter under clearance. Preferably a bumper disc - wheel 74 with rubber rim at slightly larger diameter than the turntable is mounted on pivot bolt 78 central under lobe 64 to roll on low sides or curbs 80 along the car to reduce contact damage and friction.

The turntable has a conical cylindrical locator

82 on its pivot axis center and each pedestal a locator

83 for engaging in locating holes 84 and 85 respect¬ ively and all on the longitudinal center line of the bottom of container 20, Figure 7.

Conveyor 26 has two roller chain ways 88 at right angles to track T onto which the turntables lower the container. Dogs 90 on roller chain 92 on each way 88 push or pull the containers sideways one container width plus clearance each time the loader deposits or picks up a container from the conveyor. For details

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of conveyor 26 see Figures 3, 15-19 of my U.S. Patent No. 4,124,129.

Variations

Corresponding parts of variations are given the same number of the same, or a suffix is added if the part is modified enough to mention.

Referring to Figures 8-15, loader 18P has its posts 28 spaced farther apart as shown in Figure 8 to engage under a passenger railway car body 20P in train 24 on track T to lift the body free of the car's chassis 22P and translate it parallel to an accumulating con¬ veyor 26P at station STP. The loader and accumulating conveyor are as described except for the spacing of the posts and conveyor ways. The passenger railway car has a flat bed chassis 22P, Figure 12, with two through transverse depressions or rabbets 96, locating lock down devices 98 operated by levers 100 as in Figures 19-21 and 23-24 of my pending application Serial No. 957,710 or other locating means, electrical vertically-discon- necting connectors 102 and drain openings 104. This chassis with couplers and trucks remains in the train when a car body is taken off of it and another is put on by successive loaders 18P at the station. To ready a car body for transfer from a train an attendent locks end doors of adjoining cars and pulls in the end dia¬ phragms 110 and latches them in. The diaphragms pre- ferrably are left retracted until the car body is put back on a chassis in another train. Station STP, Figures 14-15, has a concourse 112 between tracks T and T" each served by two loaders 18P arranged the first to unload and the second to load in either direction of traffic and two accumulating conveyors 26 connecting the loaders between tracks T and T ¹ . Gates or sliding doors 116 close off the conveyor area except where access to a

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car end is desired for •unloading or reloading. This station can exchange not only coach bodies, sleepers, etc. but also dining, mail, express, and baggage car bodies or a separate station could be provided for dif- ferent types of service especially for mail and express. The same general station plan can be used for auto- carrier car bodies 20A, Figure 16, with a lift ramp 118 from the station platform or ground to the car end.

Referring to Figures 17-19 for loader 18B used as a track-side dock for holding a load at a dock or building or to load from or unload to trucks as at a team track. Loader 18B is similar to the loaders des- ^' cribed except it is not powered and has one fork tine 124 on each arm 36B on the outfacing side to be en- gaged by hooks 126 on car 22B to unload or load the car of a container or pallet. The pivot posts 28 are closer together to fit the tines 124 between the pedestals 72 on car 22B which are spaced the same as on car 22. The rollers 38 supporting arms 36B run on cam tracks 32 and 32' which intersect at 128 necessitating three levels of the track. Figure 18, and a shorter leg of bracket 54' supporting the right end than the bracket 54 supporting the left end to keep the loader level. Loader 18B is shown limited to less than half a revolution so the train can completely operate it. Members 58 and 59' of arms 36B, shown as channels, slope up from pivot post 28 on which mounted to that brackets 54 with discs 74 if added clear over the top of the adjacent pivot post if this loader is to rotate over the pivots. Bars or angle 130 are added to connect load turntables 52B into a load- spreader or platform 132 to coordinate the arms 36B by forming therewith a parallelogram linkage. Locating cones 82 are secured off center on turntables 52B to align in holes 84 in the bottom of the container but are held in alignment by the angles 130 which align arms 36B

which do not reach dead centers. Cam tracks 32 and 32' have stops 134 and holding pockets 136, Figure 19, at each end of rail to hold the loader in position for a railway car 22B with extended hooks 126 to engage the loader in the position shown in phantom in Figure 17. Couplers 126 are of heavy rod secured on a vertical hinge pin 138 to the bed of the car and extend hori¬ zontally along the side of. the car and straight up pref¬ erably with a roller 140 on the vertical end. They are each swung out from the car by air pressure connected through valve 141 to cylinder 142 connected between the car frame and a short lever 144 on each rod 126. A compression spring 145 in each cylinder 142 retracts the coupler. To couple a loader 18B both coupling rods 126 are extended out at about 45° from the side of the berth so the forward coupling rod .will engage in back of the coupling tine on the far arm. This rod 126 with roller 140 pulling along the inside curvature of a tine 124 gradually starts the loader to accelerate to car speed as it swings the loader around, engaging both turntables between pedestals 72 as in Figure 17 before slopes 68 and 68' in cam tracks 32 and 32' lift the loader level as in Figure 18. The trailing coupling rod will engage the outside of the rear fork tine and push the loader out from the car as it continues to the right with the container lifted off. The loader carries it parallel up against a dock or building door not shown. Lobes 64 clear over adjacent post 28. The loader for side docking can be powered as in Figure 20 to eliminate the forks and hooks, and/or to rotate more than about 180°. This loader 18C is driven by air cylinder 150 connected to rack and pionion drive 152 similarly as in Figures 25-26 of my U.S. patent No. 4,124,129, to rotate up to over 360°. This loader

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also has the turntables each replaced by a locating cone 82 as the load pivot center where friction of occasional use or light load is no problem.

Referring to Figures 21-29 for a loader 18D with retractable hooks 124R so it can be coupled by car 22C with ϊiooks 126 and have the same pivot centers as the powered loader 18 to which features it can be con¬ verted. This loader is basically the same as those des¬ cribed but adds detail features generally applicable to the loaders. Its upper and lower arm members 58 and 59 on each side of each pivot post 28 are connected by bolts 158 through spacing sleeves 160. Parallel align¬ ment arms 162 are secured one on each pivot sleeve 34D on posts 28 and connected by an offset link 164 to carry the loader through dead centers. The loader has a platform of turntables 52D connected by angles 130 to also and otherwise coordinate the arms 36 parallel.

Loader 18D has a hook 124R on the outer rim of each lobe 64D which is opened by spring 168. The hooks are arranged as in Figure 21 to alternately face the transfer run at ends of travel so only the far one relative to the approaching vehicle can be engaged to start the loader. Each hook 124R is a short tapered channel curved to fit flush in as a piece of the lobe channel 64D and hinged thereto on vertical pin 172 at a point 90° out from the arm 36, so one hook 124B is at each end under the load platform 132 to extend out in the direction of the arms to catch rod 126 to enter it behind the lobe channel so the rod can pull the loader around to engage with the car. If the opposite fork hook 124R is extended, which it is unless pinned closed, the rear rod will enter through the hook opening behind lobe channel 64D of the rear lobe. Each lobe has a vertical partition 174 to confine and guide the hook rod 126 to track around a circumferential arc so whether

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pushing or pulling it can turn the loader without catch¬ ing and so the rear hook will leave the circumferential track at the open end hook point 124R. Springs 168 yield so the hooks 124R close when engaged against the pedes- tals or ends of coupling slots 96 on car 22 or 22C. Figure 29 shows three successive positions of a car hook 126 engaging a load lobe hook 124R and moving the loader 18D counterclockwise into transfer position over the car. It shows how the pedestal 72 has closed the hook 124R in fully engaged position at the right.

Another feature of this loader generally ap¬ plicable is the mounting of the turntable 52D on rollers to roll in channels 180 along bracket 54D of arm 36 in and out against spring 181 extending it out. Turntable 52D has a depending locating finger 182 to engage the side of car 22 or 22C to move the table over a cord of the transfer arc to more exactly align it for engaging a load by compensating for the transfer arc, track shift and car positioning thereon, and to dampen car sway.

Referring to Figures 30-38, a rotary loader 18 is mounted on a special vehicle or railroad car 190 which runs on track ST between stationary storage spots or berths 27S and railroad track T, on which a car 22 in train 24 is shown moving left to right. The loader has two rotary lift arms 36 each on a sleeve 34 on a -vertical pivot shaft 28 secured to the frames of car 190. Arms 36 are each supported by 'their wheel 38 on a cam track 32 in a well 192 in the frame of the car. Each arm 36 has a turntable 52 pivotally mounted on the outer end with a centerlocator cone 82 to support and locate the end of a container 20. The arms are coordinated and driven by the same drive as in Figures 4-6 with parts given the same numerals where shown. Car 190 has out- board rollers 200 along one or both sides engaged in

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rail 212 secured along one or both sides of track ST to keep the car from tilting when the loader is extended from either side to transfer a load. Vehicle 190 has an operator's cab 204 and is driven along track ST by any suitable drive or can be cable driven from on board or off the vehicle if so desired. The loader and its ve¬ hicle is controlled by an operator in a usual manner and is operated while the vehicle 190 is moving to set a container on a stationary berth or railway car and can be stationary or moving when engaged with a moving vehicle.

The berths 27S along the ground and those on car 22 have timber or steel runners 80 curved in on ends to serve as guards to keep the loader from engaging in a wrong spot. If the loader is engaged against a car 22 as shown in Figure 30 it will not enter under the load until it registers between the aligning end ped¬ estals of the berth; then it rotates counterclockwise around under the container as shown in Figure 31. The loader is then lifted on its cam track ramps 68 and lifts off the container and carries it counterclockwise and parallel around to set it in the next stationary berth as shown in Figure 32.

Loader 18, operating counterclockwise in Figure 30, is shown as having just set a container from the empty berth at the right in car 22 onto the storage berth at the left and has cleared out from under that container and swung against the car to wait to engage in the opening under the container thereon to reach under and lift it off as the train slowly moves to the right. The loader continues revolving and moves to the right at an average speed of half the train speed to set this container on the vacant storage spot to the right as in Figure 32 and can continue around and around unloading successive containers in the train to

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successive spots to the right as it follows the train. Figure 33 shows with arrows the movement of the loader between the train and storage spots in transferring five successive containers numbered 1-5 from the train moving left to right. The operation would be reversed to load the train. Any cars or berths not right for the transfer would be skipped under the control of the operator.

Along track T, Figure 39-42, car 22 runs by an industry or warehouse dock D having an overhead double-parallel-jib rotary loader 18E. This two-arm loader lifts container 20 from above so dock D can ex¬ tend to the railroad and be used for freight car loading etc. Loader 18E has two pivot posts or masts 28E with a cam track 32E on each mast, a sleeve 34E on each mast and an arm 36E which extends out from the bottom of sleeve 34E braced by rod 200 to the top of the sleeve. A wheel 38 on radial shaft 66 is secured under each arm 36E to support it on its cam track 32E which lifts or lowers the sleeve on slope 68 as the arm rotated. A load spreader 132E is connected by vertical pivot pins 210 to each arm 36E at equal distance from the mast to move in parallel planes through about 130°. The load spreader can be of great variety and is here shown as two C-shaped end members 212 connected at top and bottom ends by cross members 214 and 216 respectively, the bottom member curving out toward the front as it curves between the end members which curve in to meet it to form a bumper to aid alignment as the bottom of the spreader engages between pedestals 72 and under a load on car 22. The end members 212 are pivotally sus¬ pended on pins 210 from ends of arms 36E to form a parallelogram linkage. Rollers 220 at ends of pedestals 72 reduce coupling friction. The loader is driven by gearmotor 48E suspended from an arm 36E and coupled to

the axle of a wheel 38E.

Loader 18E is driven counterclockwise through the position shown in Figures 39-41 to carry-container 20 over car 22 moving with the loader coupled to it. The loader rolls down slopes 68 lowering arms 36E to¬ gether when extended farthest over car 22 to set the container down in the rear berth on pedestals 72 and continues on out from the car to a depression 136E in the cam track which positions the loader for a train from the right. When a container for this dock or. station comes on a train from the right the loader is driven clockwise to align the load spreader to engage between the pedestals and lifts the container up off locators 83 and translates it parallel over the dock, where it can be unloaded and or loaded conveniently.

These loaders are preferably controlled as described with Figures 14-16 and 25-26 in my U.S. patent No. 4,124,129.

Referring to Figure 42 for a variation of the loader of Figures 39-41, each arm 36F has a top and a bottom parallel member 226 and 227 pivotally connected to sleeve 34F on pivot column 28F and to pin 210F to form a parallelogram linkage to eliminate the vertical sliding of the sleeve on the mast. Members 230 and 231 of each arm 36F are also pivotally secured to a leg 230 having a wheel 38 supporting the arm on track 32 on dock D about the base of column 28F. Operation is generally the same as with the other loaders described.

Having thus described some embodiments and applications of my invention I do not wish to be limited to the disclosure herein but intend to cover by the ap¬ pended claimed all modifications and applications which come within the true spirit and scope of this invention.