US20180127003A1 - Rail transport dump loop system for conveying bulk materials - Google Patents

Rail transport dump loop system for conveying bulk materials Download PDF

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Publication number
US20180127003A1
US20180127003A1 US15/399,578 US201715399578A US2018127003A1 US 20180127003 A1 US20180127003 A1 US 20180127003A1 US 201715399578 A US201715399578 A US 201715399578A US 2018127003 A1 US2018127003 A1 US 2018127003A1
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United States
Prior art keywords
rails
dump
train
rail
cars
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Abandoned
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US15/399,578
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English (en)
Inventor
James Everrett Fisk
Patrick Walter Joseph Fantin
William John Mccall
David Wilhelm Niemeyer
Curtis Ron Reay
Eric Benjamin Alexander Zanetti
Esko Johannes Hellberg
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Rail Veyor Technologies Global Inc
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Rail Veyor Technologies Global Inc
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Priority to US15/399,578 priority Critical patent/US20180127003A1/en
Publication of US20180127003A1 publication Critical patent/US20180127003A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B3/00—Elevated railway systems with suspended vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B13/00—Other railway systems
    • B61B13/12—Systems with propulsion devices between or alongside the rails, e.g. pneumatic systems
    • B61B13/127—Systems with propulsion devices between or alongside the rails, e.g. pneumatic systems the propulsion device consisting of stationary driving wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B5/00—Elevated railway systems without suspended vehicles
    • B61B5/02—Elevated railway systems without suspended vehicles with two or more rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D9/00—Tipping wagons
    • B61D9/04—Adaptations of rail vehicle elements to tipping wagons
    • B61D9/08—Frames; Supporting or guiding means for the bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D9/00—Tipping wagons
    • B61D9/14—Tipping systems controlled by trackside means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F1/00—Underframes
    • B61F1/08—Details
    • B61F1/12—Cross bearers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G1/00—Couplings comprising interengaging parts of different shape or form and having links, bars, pins, shackles, or hooks as coupling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
    • B61G3/22—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling heads rigidly connected by locks consisting of pivoted latches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/021—Measuring and recording of train speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/023—Determination of driving direction of vehicle or train
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/04—Indicating or recording train identities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/04—Indicating or recording train identities
    • B61L25/048—Indicating or recording train identities using programmable tags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
    • B61L27/04—Automatic systems, e.g. controlled by train; Change-over to manual control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/12—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element
    • B65G17/123—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface comprising a series of individual load-carriers fixed, or normally fixed, relative to traction element arranged to keep the load-carriers horizontally during at least a part of the conveyor run
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B25/00—Tracks for special kinds of railways
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B25/00—Tracks for special kinds of railways
    • E01B25/22—Tracks for railways with the vehicle suspended from rigid supporting rails
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D13/00—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
    • G05D13/62—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover characterised by the use of electric means, e.g. use of a tachometric dynamo, use of a transducer converting an electric value into a displacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D3/00—Wagons or vans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04—Bulk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2812/00—Indexing codes relating to the kind or type of conveyors
    • B65G2812/02—Belt or chain conveyors
    • B65G2812/0299—Conveyors having independant belt or chain conveyor sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2814/00—Indexing codes relating to loading or unloading articles or bulk materials
    • B65G2814/03—Loading or unloading means
    • B65G2814/0347—Loading or unloading means for cars or linked car-trains with individual load-carriers
    • B65G2814/0356—Loading or unloading means for cars or linked car-trains with individual load-carriers the whole car being tilted
    • B65G2814/0359—Loading or unloading means for cars or linked car-trains with individual load-carriers the whole car being tilted by means of car tipplers
    • B65G2814/0361—Accessories
    • B65G2814/0364—Means for loading or unloading cars in the tipplers

Definitions

  • the present invention generally relates to a rail transport system having no internal drive, and in particular to a dump loop and components thereof of a rail transport system for conveying bulk materials.
  • Rail cars are individual units that each has to be loaded in a batch process, one car at a time. Bulk materials can be unloaded from hopper cars by opening bottom dump hatches or can be individually rotated to dump out of the top. Spotting cars for both loading and unloading is time consuming and labor intensive.
  • Conveyor belts have been used for many years to move bulk materials.
  • a wide variety of conveyor belt systems exist that can move practically every conceivable bulk material.
  • Very long distance single belt runs are very capital cost intensive and are subject to catastrophic failure when a belt tears or rips, typically shutting down the entire system and dumping the carried load, requiring cleanup.
  • Conveyor belts are relatively energy efficient but can require high maintenance because of an inherent problem of multiple idler bearings requiring constant checking and replacement.
  • Short distance conveyor belts are commonly used in dry or clamp transport of almost all types of materials. Because conveyor belts are very flexible and desirably operated over fairly flat terrain, they are not efficient at transporting moderately high solids slurry where water and fines can accumulate in low spots and spill over the side creating wet spilled slurry handling problems.
  • Some bulk materials can be transported in pipelines when mixed with water to form slurry that is pushed or pulled with a motor driven pump impeller in an airless or flooded environment.
  • the size of the individual particles that are present in the bulk materials dictates the transport speed necessary to maintain movement. For example, if large particles are present then the velocity must be high enough to maintain movement by saltation or skidding along the bottom of the pipe of the very largest particles.
  • pipelines operate in a dynamic environment, friction is created with the stationary pipe wall by a moving fluid and solid mass. The higher the speed of the moving mass the higher the friction loss at the wall surface requiring increased energy to compensate.
  • the bulk material has to be diluted with water initially to facilitate transport and dewatering at the discharge end.
  • Light rail, narrow gage railroads for transporting bulk material from mines and the like is known as described by way of example with reference to U.S. Pat. No. 3,332,535 to Hubert et al. wherein a light rail train made up of several cars is propelled by drive wheels and electric motors combinations, dumping over an outside loop.
  • U.S. Pat. No. 3,752,334 to Robinson, Jr. et al. discloses a similar narrow gage railroad wherein the cars are driven by an electric motor and drive wheels.
  • U.S. Pat. No. 3,039,402 to Richardson describes a method of moving railroad cars using a stationary friction drive tire.
  • Such a light rail system offers an innovative alternative to the above mentioned material transport systems and provides for the transport of bulk materials using a plurality of connected cars open at each end except for the first and last cars, which have end plates.
  • the train forms a long open trough and has a flexible flap attached to each car and overlapping the car in front to prevent spillage during movement.
  • the lead car has four wheels and tapered side drive plates in the front of the car to facilitate entry into the drive stations.
  • the cars that follow have two wheels with a clevis hitch connecting the front to the rear of the car immediately forward. Movement of the train is provided by a series of appropriately placed drive stations having drive motors on either side of the track which are AC electric motors with drive means such as tires to provide frictional contact with the side drive plates.
  • each drive motor is connected to an AC inverter and controller for drive control, with both voltage and frequency being modified as needed.
  • the electric motors each turn a tire in a horizontal plane that physically contacts two parallel side drive plates external of the wheels of each car. Pressure on the side drive plates by these drive tires converts the rotary motion of the tires into horizontal thrust.
  • the wheels on the cars are spaced to allow operation in an inverted position by use of a double set of rails to allow the cars to hang upside down for unloading. By rotating this double track system the unit train can be returned to it normal operating condition.
  • Such a system is well known and commercially referred to as the Rail-VeyorTM material handling system.
  • Flanged wheels may be symmetrical to the side drive plates allowing operation in an inverted position which, when four rails are used to encapsulate the wheel outside loop discharge of the bulk material is possible. By using elevated rails, the train can operate in the inverted position as easily as in the convention manner.
  • drives for such light rail systems have been developed as described in U.S. Pat. No. 5,067,413 to Kiuchi et al. describing a device for conveying travelable bodies which are provided no driving source, on a fixed path.
  • a plurality of travelable bodies travels on the fixed path while aligned substantially in close contact with each other. Traveling power is transmitted to one of a plurality of travelable bodies which is positioned on at least one end of the alignment.
  • the traveling power drives the travelable body with frictional force while pressing one side surface of the travelable body, and is transmitted to the travelable body while backing up the other side surface of the travelable body.
  • a device to transmit traveling power is arranged on only a part of the fixed path.
  • the present invention generally relates to a rail transport system having no internal drive, and in particular to an improved rail transport system for conveying bulk materials.
  • the rail transport system includes allows for functionality, manufacturability and/or modularity and, therefore, can result in a reduction in system component costs, manpower and/or implementation.
  • the rail transport system includes a dump loop and components thereof for enabling unloading of the rail cars in a predetermined location.
  • the components thereof may be designed to be modular to allow for ease of manufacture and installation of the dump loop.
  • the components may be prefabricated for later use on site.
  • the present invention provides for a modular rail section for a dump loop in a train system, the modular rail section comprising:
  • the rail section is a modular dump loop section and the set of parallel rails are inner rails and have an annular curve to form at least a partial loop, wherein the modular dump loop section further comprises:
  • entrance ends of the outer rails are tapered.
  • the dump loop section angle is greater than 180°.
  • the dump loop section angle is less than 180°.
  • the dump loop section angle is from 180° to 130°.
  • an angle of entrance into the modular dump loop section is horizontal or above grade.
  • an angle of entrance into the modular dump loop section is 20 above grade.
  • an angle of exit from the modular dump loop section is horizontal or below grade.
  • an angle of exit from the modular dump loop section is 150°.
  • the modular dump loop section further comprises a set of outer rail extensions for connection to the exit end of the parallel outer rails for extending the parallel outer rails and increasing the dump loop angle.
  • the bracing comprises center bracing, C-bracing and/or spoke bracing reinforcing, supporting or maintaining the spacing and/or shape of the annular curve and/or the spacing of the inner and outer rails.
  • the rail section is a modular exit ramp for guiding the cars of a train thereupon in an inverted orientation
  • the bracing is inverted rail bracing spanning the parallel set of rails and is substantially U-shaped for accommodating the cars of the train in an inverted orientation without impeding the travel of the cars and wherein an end of the modular exit ramp is adapted for connection to outer rails of a dump loop section.
  • the rail section is a modular inverted section for guiding the cars of a train thereupon in an inverted orientation
  • the bracing is inverted rail bracing spanning the parallel set of rails and is substantially U-shaped for accommodating the cars of the train in an inverted orientation without impeding the travel of the cars.
  • the parallel rails are substantially straight and contain no annular curve.
  • the parallel rails are contain an annular curve.
  • the rail section is a modular dump ramp for guiding cars of a train thereupon in a substantially upright orientation, wherein the parallel rails have a fixed predetermined length and wherein an exit end of the parallel rails is adapted for connection to inner rails of a dump loop section.
  • the present invention provides for a rail system comprising a modular dump loop comprised of any one of the modular sections as outlined above.
  • the present invention provides for a rail system comprising an underground dump loop for unloading cars of a train traveling on the rail system, wherein the rail system comprises:
  • the dump loop section is comprised of a modular dump loop section as outlined above.
  • FIG. 1 is a diagrammatical illustration of an embodiment of a rail transport system for transporting bulk materials
  • FIG. 2 is a side view of one embodiment of a train, comprising rail cars, operable with the rail transport system of FIG. 1 ;
  • FIG. 3 is a top plan view of one embodiment of a train, comprising rail cars, operable with the rail transport system of FIG. 1 (a example of a drive station is visible);
  • FIG. 4 is a diagrammatical illustration of another embodiment of a rail transport system for transporting bulk materials
  • FIG. 5 is a diagrammatical side view of an example of a dump loop for a train system for unloading contents of the cars of a train according to one embodiment of the invention
  • FIGS. 6A-6C are schematic illustrations of an example of an underground dump loop according to one embodiment of the invention.
  • FIGS. 7A-7B are schematic side views of an example of a dump loop for a train system for unloading the contents of the cars of a train according to one embodiment of the invention wherein the loop is a 12 ft loop and 5 ft cars are used thereon;
  • FIGS. 8A-8B are schematic side views of an example of a dump loop for a train system for unloading the contents of the cars of a train according to one embodiment of the invention wherein the loop is a 12 ft loop and 6 ft cars are used thereon;
  • FIG. 9 is a schematic isometric view of an example of one embodiment of a modular dump loop comprising embodiments of a dump ramp, a dump loop section, an exit ramp, and an inverted curved section;
  • FIG. 10A-C are side, back and isometric views of one embodiment of a modular dump loop section
  • FIG. 11 is an isometric view of the modular dump loop section of FIG. 10 in communication with an embodiment of a dump ramp and an embodiment of an exit ramp;
  • FIG. 12 is an isometric view of another embodiment of a modular dump loop comprising embodiments of a dump ramp, a dump loop section, an exit ramp, and an inverted curved section;
  • FIG. 13 is an isometric view of another embodiment of a modular dump loop comprising embodiments of a dump ramp, a dump loop section and an exit ramp;
  • FIG. 14A and FIG. 14B are isometric back and isometric front views of a further embodiment of a modular dump loop section comprising modular components;
  • FIG. 15 is a side view of the modular dump loop section comprising modular components of FIGS. 14A and 14B ;
  • FIG. 16 is an isometric view of one embodiment of a modular exit ramp
  • FIG. 17 is an isometric view of one embodiment of a modular dump ramp
  • FIG. 18 is an isometric view of one embodiment of a modular inverted straight section.
  • FIG. 19 is an isometric view of one embodiment of a modular inverted curved section.
  • one train and rail transport system 10 comprises a track 12 having parallel rails 12 a , 12 b .
  • a train 14 includes a first, front, or lead car 16 having both forward and rear wheel pairs 18 , 20 operable on the track 12 for providing a free wheeling movement to the lead car.
  • the train includes additional cars described as a second or rear car 22 and an intermediate or middle rail car 24 or multiple intermediate or middle rails cars, carried between the lead and rear cars.
  • the rear and intermediate cars 22 , 24 include a forward pivotal connection or coupling assembly 26 for pivotally connecting the intermediate and rear cars to adjacent forward cars.
  • the rear and intermediate cars 22 , 24 have only rear wheel pairs 20 operable on the track 12 for providing a free wheeling movement thereto.
  • the track 12 may include a dump loop section for unloading the cars of the train 14 at a predetermined location.
  • the dump loop section and components thereof will be discussed in more detail below with reference to FIGS. 5-19 .
  • each of the cars has a side plate 28 affixed thereto.
  • multiple drive stations 30 each have a variable frequency drive (VFD) including a drive tire 32 for frictionally contacting the side plate 28 and imparting a driven moment to each rail car and thus the train 14 .
  • VFD variable frequency drive
  • the embodiment herein described includes each car having opposing side plates 28 a , 28 b and opposing drive tires 32 a , 32 b .
  • each car may have a fixed side plate on each side, which runs substantially the length of the car and spaced outside the wheels and tracks. These side plates may be located symmetrically with the wheels and parallel to the light rails.
  • the side plates may be located asymmetrical with the wheels.
  • the wheels are part of the side plates such that the side plate-wheel arrangement allows the train to be moved either downstream or upstream.
  • the wheels may be placed to allow the train to operate in either an upright or an inverted position.
  • Each drive station 30 includes A/C inverters and a controller connected to every set of drive motors such that the motors may be synchronized through a modifying of at least one of voltage and frequency thereto.
  • Forward or reverse motion of the train is the result of horizontal rotation of tires on opposite sides of the train turning in opposite directions with suitable pressure of said rotation that provides reduced slip between the tire surface and side plates. In other words, the two opposing tires are both pushed inward toward the center of the track.
  • the drive tires 32 are further adapted to engage and apply pressure to the side plate 28 of the car.
  • the lead car 16 has a trough 54 and opposing side plates 28 a , 28 b having a reduced distance between them for smooth entrance into opposing drive tires 32 a , 32 b of the drive station.
  • the rear car 22 has a trough and opposing side plates 28 a , 28 b which may be at a reduced distance between them to reduce shock when the train 14 exits the opposing drive tires 32 a , 32 b of the drive station 30 .
  • the intermediate cars 24 coupled to the lead car 16 and the rear car 22 by the clevis type coupling has its trough aligned to produce an overall open trough with gaps 56 between cars.
  • a flexible flap 58 extends over the gap 56 between the cars 16 , 24 , 22 .
  • the cars each comprise of a semi-circle open trough and when joined or coupled together represents an open and continuous rigid trough for the entire length of the train.
  • a flexible sealing flap attached near the front of the trailing car overlaps but is not attached to the rear of the lead car trough.
  • a semi-circular trough is much better sealed with the flexible flap that other designs such as showed in U.S. Pat. No. 3,752,334. This allows the train to follow the terrain and curves without losing its sealed integrity as a continuous trough.
  • the material to be transported in the train is effectively supported and sealed by this flap as the material weight is equally distributed maintaining the seal against the metal trough of the forward car.
  • the long continuous trough can provide for simplified loading as the train can be loaded and unloaded while moving similar to a conveyor belt. This can be considered an advantage over the batch loading equipment requirements of a conventional railroad hopper or rotary dump car.
  • the track 12 can include a dump loop section for unloading the contents of the cars of the train 14 in a predetermined area or location.
  • a dump loop section for unloading the contents of the cars of the train 14 in a predetermined area or location.
  • FIG. 5 An example of an inversion dump setup for unloading of a car is shown in the side schematic view of FIG. 5 .
  • the cars 120 of the train ride along the track 123 in an upright position.
  • the track 123 loops thereby inverting the train and the contents of the cars 120 is unloaded or dumped.
  • the loop portion 128 of the track includes an inner track 124 in communication with the track 123 , also referred to as the dump ramp when in connection with the dump loop.
  • the train rides upon the inner track 124 before inverted and gravity guides the train onto the outer track 126 of the loop 128 .
  • An exit ramp 129 in communication with the outer track 126 allows for exit of the train from the loop 128 . Once the train has transferred to the outer track 126 or the exit ramp 129 and no longer rides upon the inner track 124 , the inner track 124 may end.
  • the dump ramp or entrance and the exit ramp 129 are tangent to the loop portion 128 .
  • the tangential dump ramp and the exit ramp 129 communicate with the loop portion 128 with entrance and exit angles varying to adapt to the particular geometry of the solution used in a given dump loop application of the track.
  • the loop 128 may include an entrance angle at which the track 123 tangentially meets the inner track 124 of the loop 128 and may include an exit angle at which the outer track 126 tangentially meets the exit ramp 129 .
  • the entrance angle may range from level to more than 20°.
  • the exit angle may range from level to more than 150°. It will be appreciated that the angles may change based on the setup, location and topography of the region in which the dump loop is situated as well as the power of the drive stations.
  • the loop 128 may form a complete loop thereby reinverting the train into an upright position before exiting the loop.
  • the train may be maintained in an inverted travelling state for an extended distance before being reinverted for loading.
  • Leg extensions may be used to elevate the inverted track sections above the ground to accommodate the inverted cars so that they do not impact with the ground or topography.
  • FIGS. 6A to 6C One embodiment of a complete loop is shown with reference to FIGS. 6A to 6C wherein an underground dump loop is shown for unloading the contents of the cars of the train.
  • the underground dump loop 148 includes a track 140 also referred to as the dump ramp section, in connection with a loop section 142 for inverting the cars thereby dumping or unloading the contents of the cars into a collection shoot 146 or otherwise suitable collection area or zone.
  • the exit of the loop section 142 is in communication with a exit ramp 144 allowing for exit of the train from the underground dumping area.
  • the diameter of the loop can be adjusted as needed based on the situation, for example the topography of the region and/or the length of the car selected. It some cases, it can be more effective or efficient to change the length of the car to accommodate the diameter of the loop as opposed to adjusting the diameter of the loop.
  • the length of the car selected can be varied to optimize overall system costs or to accommodate the need for tight curves.
  • the loop may have a 12 foot diameter for example as illustrated in FIGS. 7A-B and 8 A-B and may accommodate cars of different lengths for example a car having a 5 ft length as shown in FIG. 7A-B or a car having a 6 ft length as shown in FIG. 8A-B .
  • modular tracks may be designed and prefabricated that result in a predetermined diameter for a full loop, semi-loop or half-loop system.
  • each train system setup is a customized setup including rails and dump loops that are designed specifically for the topography of the location and the setup of the mine.
  • each system is built off site and shipped to the site of end use where fabrication is completed. When adjustments are determined to be needed, the system is usually shipped back off-site, adjusted and sent back for final fabrication and completion until the engineering and order specifications are met. This requires intensive engineering, fabrication, man power and man hours to properly design, fabricate and adjust each system.
  • Custom engineering of the dump loop components and sections for every installation adds engineering and fabrication costs and time to the project. Modular component design allows for simplification of these tasks.
  • FIGS. 9 and 10 An example of one embodiment of a modular dump loop is shown schematically in FIGS. 9 and 10 .
  • the modular dump loop is shown generally at 200 and may be used in conjunction with a typically train system such as those described herein and may also be retrofitted into an existed train system such as those described herein.
  • the dump loop 200 is used to invert the cars of the train thereby unloading their contents at the predetermined location in the train system in connection with the track of the system.
  • the modular dump loop 200 includes a dump loop section 202 in connection with a dump ramp section 204 for directing an upright car into the dump loop section 202 .
  • At the exit of the dump loop section 202 is an exit ramp 206 for guiding the train in an inverted position from the dump loop section 202 .
  • the train continues in an inverted position over an extended distance and therefore a series of modular inverted tracks 210 are implemented sequentially connected to the exit ramp 206 .
  • the inverted tracks 210 should be elevated above the ground or above a trench that accommodates the inverted train cars.
  • leg extensions 208 positioned beneath the inverted track 210 may be used to elevate the inverted track 210 thereby allowing for unimpeded passage of the inverted train above the ground.
  • FIGS. 10A-10C A detailed view of the modular dump loop section of FIG. 9 is shown in FIGS. 10A-10C wherein FIG. 10A provides a side view, FIG. 10B a back view and FIG. 10C an isometric view.
  • a modular dump loop section such as for example the modular dump loop section of FIGS. 9 and 10 has been provided as is shown in general at 202 .
  • the dump loop section 202 includes set of parallel inner rails 214 for guiding a train when in an upright or non-inverted position about the loop. Opposite the inner rails 214 are a set of parallel outer rails 216 for engaging and guiding the train once the train has substantially inverted and gravity forces the wheels of the train to be guided by the outer rails 216 .
  • the inner and outer rails are spaced apart the distance (or slightly greater than the distance) of the track engaging diameter of the wheels of the train thereby allowing for little or no play in the wheels as they rare guided by the inner and then outer rails 214 and 216 respectively.
  • the modular dump loop section 202 which may be prefabricated and shipped to the site of end use, comprises a set of parallel inner rail 214 on which the wheels of the train are guided when first entering the dump loop section 202 .
  • the inner rails 214 have an annular curved in a loop or semi-loop to invert the cars of the train.
  • a set of parallel outer rails 212 engages and guides the wheels of the cars as the cars become inverted.
  • the outer rails 212 also have an annular curve in a loop or semi-loop and are positioned opposite the inner rails 212 to allow the outer rails to receive the wheels of the cars as the cars become inverted and leave the inner rails 214 .
  • the outer rails may have a tapered leading end 228 allowing for smooth or unimpeded entry of the wheels of the cars into the loop section 202 .
  • a plurality of braces may be used to reinforce, support and maintain the spacing and shape of the inner and outer rails. It will be appreciated that any number and orientation of the bracing may be implemented to reinforce, support and maintain the inner and outer rails as is needed based on the intended speed and weight of the train and the weight of the intended load to be carried.
  • a center brace 218 is used between the inner rails.
  • a C-brace 216 is used to support the inner and outer rails and maintain the distance between the inner rails and the outer rails.
  • a spoke brace 220 transverse the inner and outer rails and two separate locations along the loop and meeting within the loop may be used to support the loop itself and maintain the angle of the loop and the spacing of the inner and outer rails.
  • the ends of the parallel inner rails 214 may end in a substantially flat surface or flange 222 allowing for a connection point with the end of the rails of the dump ramp 204 .
  • the parallel outer rails 212 may end in a substantially flat surface or flange 224 allowing for a connection point with the end of the rails of the exit ramp 206 .
  • the inner rails 214 may have a flange or substantially flat surface on their finishing ends allowing for connection to a support frame or the like for supporting the loop section 202 .
  • the loop section 202 is substantially a 180° loop or half-loop designed for horizontal entry and horizontal exit into and out from the dump loop section 202 .
  • the dump ramp section 204 enters at a horizontal angle and the exit ramp 206 is also connected at a horizontal angle.
  • FIGS. 11-13 various other angles of approach or entry into the dump loop 202 and exit therefrom may be designed.
  • the dump loop section 302 of FIG. 11 has a 20° grade dump ramp section 304 and a 150° exit ramp section 306 with a corresponding dump loop section that loops about 130°.
  • the size of the loop with respect to the angle covered will be referred to as the dump loop angle.
  • a dump loop section of the desired loop angle may be selected as needed or desired for a given on-site situation or demand. This also allows for modular dump ramps and modular exit ramps to be used which are simply connected to the a dump loop section of the desired loop angle which the dump ramp and the exit ramp may be the same modular component for use across any of the differently angled dump loop sections.
  • the dump loop section 402 of FIG. 12 has a 20° grade dump ramp section 404 and a horizontal exit ramp section 406 with a corresponding dump loop section 402 that loops about 160°.
  • the dump loop section 502 of FIG. 13 has a horizontal dump ramp section 504 and a 150° exit ramp section 506 with a corresponding dump loop section 502 that loops about 150°.
  • dump loop sections of 180°, 160°, 150° and 130° degrees have been illustrated, modular dump loops sections of other angles are within the concept of the invention and are contemplated by the inventors.
  • a further embodiment of a modular dump loop section is shown generally at 600 in FIGS. 14A and 14B and FIG. 15 .
  • the modular dump loop section 600 is comprised of modular components that may be used to make up dump loop sections of various angles.
  • a modular inner rail 602 is used that can accommodate both a horizontal exit as well as an exit of reduced angle by bending away from the outer rail 604 after a transition point has been reached whereby the wheels of a car would have transitioned to the outer rail 604 have passed the point of inversion. This accommodates the situation whereby horizontal exit is desired the wheel of the car is guided a further distance and a greater angle that is needed for a reduced angle exit from the dump loop section 600 .
  • the outer rail 604 is designed for an exit of reduced angle, for example a 150° exit into the exit ramp and a modular outer rail extension 620 may be added to the outer rail to extended the outer rail, for example, to a horizontal position for horizontal exit from the dump loop section 600 into the exit ramp.
  • a modular outer rail extension 620 may be added to the outer rail to extended the outer rail, for example, to a horizontal position for horizontal exit from the dump loop section 600 into the exit ramp.
  • the modular components may be prefabricated and simply put together and adjusted as needed to suit a given topography at the site of end use.
  • the dump loop section 600 may include the bracing components 608 , 610 , 612 and 614 as described above to reinforce, support and maintain the spacing and shape of the inner and outer rails and to mount the section 600 to a structural member, for example an A-frame.
  • the outer rails 604 may also include a tapered end 606 and the bracing and the rails may include flanges or flat sections that allow for connection to other rails such as the exit ramp and the dump ramp or support frames or structures.
  • FIG. 16 shows one embodiment of a modular exit ramp 700 for connection to the outer rails of a dump loop section such as those for example as described herein.
  • the exit ramp 700 includes parallel rails 702 adapted to guide a train in an inverted orientation.
  • the rails 702 include inverted rail bracing 704 which are generally U-shaped to accommodate the passage of an inverted rail car thereabove travelling on the rails 702 of the exit ramp 700 .
  • bracing 704 may be used to reinforce, support and maintain the spacing and shape of the rails.
  • Rail connectors or mounts 706 may be positioned at suitable locations on the rail for securing the rail to legs, leg extensions or abutting rails or dump loop sections as is needed.
  • the modular exit ramp 700 is shown as being generally flat but may be curved in the event that a curved exit ramp is desired or required based on the topology of the site.
  • FIG. 17 One embodiment of modular dump ramp 800 is shown in FIG. 17 for connection to the inner rails of a dump loop section for guiding a train into the dump loop section for inversion.
  • the modular dump ramp 800 may alternatively be connected to a further rail section for guiding the train along a desired path.
  • the dump ramp 800 is comprised of parallel rails 802 adapted to guide a train in an upright position.
  • center bracing 804 may be used to reinforce, support and maintain the spacing and shape of the rails.
  • Rail connectors or mounts 806 may be positioned at suitable locations on the rail for securing the rail to legs, leg extensions or abutting rails or dump loop sections as is needed.
  • FIG. 18 One embodiment of a modular inverted straight section 900 is shown in FIG. 18 for guiding a train in an inverted orientation.
  • the inverted straight section 900 may be connected to a further inverted straight section or to an exit ramp for allowing further travel of the train in an inverted orientation.
  • the inverted straight section 900 includes parallel rails 902 adapted to guide the train in an inverted orientation. Spanning the rails 902 are U-shape bracing 904 to reinforce, support and maintain the spacing and shape of the rails. By having U-shaped bracing spanning the rails 902 they do not impede an inverted rail car travelling along the rails but rather can accommodate a rail car in an inverted orientation extending below the rails 902 .
  • Rail connectors or mounts 906 and 908 may be positioned at suitable locations on the rail for securing the rail to legs, leg extensions or abutting rails or dump loop sections as is needed.
  • the invention also provides for a modular inverted curved section 1000 as described with reference to FIG. 19 .
  • the inverted curved section 1000 may be connected to a further inverted curved section, an inverted straight section or to an exit ramp for allowing further travel of the train in an inverted orientation.
  • the inverted curved section 1000 includes parallel curved rails 1002 adapted to guide the train in an inverted orientation in a gradual semi-looped curve. Spanning the rails 1002 are U-shape bracing 1006 to reinforce, support and maintain the spacing and shape of the rails.
  • Rail connectors or mounts 1004 may be positioned at suitable locations on the rail for securing the rail to legs, leg extensions or abutting rails or dump loop sections as is needed.
  • bracing components, connectors or mounts as described herein are merely illustrative of examples of bracing components, connectors or mounts that may be incorporated into the modular rail sections to allow for reinforcing, support, maintain the spacing and shape of the rails, connection of the rail sections to each other or to legs or leg extensions.
  • the placement and number of bracings, connectors or mounts may be altered, increased or reoriented without departed from the invention.

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  • Electric Propulsion And Braking For Vehicles (AREA)
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  • Handcart (AREA)
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  • Train Traffic Observation, Control, And Security (AREA)
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US15/399,578 2014-07-08 2017-01-05 Rail transport dump loop system for conveying bulk materials Abandoned US20180127003A1 (en)

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PCT/CA2015/050252 WO2016004517A1 (en) 2014-07-08 2015-03-31 Rail transport dump loop system for conveying bulk materials
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US15/399,567 Active 2035-09-07 US10583846B2 (en) 2014-07-08 2017-01-05 Drive station arrangements
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US15/399,552 Abandoned US20180186384A1 (en) 2014-07-08 2017-01-05 Control system for an improved rail transport system for conveying bulk materials

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CL2017000048A1 (es) 2018-01-12
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AP2017009737A0 (en) 2017-02-28

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