Patent ID: 12208826

DETAILED DESCRIPTION

As described above, railway cars with one or more discharge openings may be used to transport and sometimes store dry, bulk materials. Hopper cars, for example, are frequently used to transport coal, sand, metal ores, ballast, aggregates, grain and any other type of lading that may be satisfactorily discharged through respective openings formed in one or more hoppers. In hopper cars, respective discharge openings are typically provided at or near the bottom of each hopper to rapidly discharge cargo. In gondola cars, the discharge opening may be provided in the sidewall assembly. A variety of discharge control systems have been used to open and close discharge openings associated with railway cars. There are, however, certain disadvantages associated with existing discharge control systems.

For example, according to one existing approach, longitudinal door systems are operated by a pneumatic cylinder and drive beam located along the longitudinal centerline of the car. Although such an arrangement may be suitable for some railcar operators, others may find that the placement of the discharge control system along the longitudinal centerline of the car may limit the purposes for which such a railcar may be used. In such a scenario, it may be desirable to relocate the discharge control system for the longitudinal door system.

The present disclosure contemplates various embodiments that may address these and other deficiencies associated with existing approaches. In some cases, this is achieved by locating a discharge control system for operating a longitudinal door such that it is positioned away from the longitudinal centerline of the railcar. According to one example embodiment, a railway car is disclosed. The railway car comprises an underframe and at least one compartment for transporting lading. The railway car comprises at least one discharge opening, and a door assembly adjacent to the at least one discharge opening. The railway car comprises a discharge control system comprising at least a common linkage mounted away from a longitudinal centerline of the railway car and a secondary linkage. The discharge control system is operable to move the door assembly between a first position and a second position. The railway car comprises an actuator operable to drive movement of the common linkage in connection with movement of the door assembly between the first position and the second position.

In certain embodiments, the underframe may comprise a side sill oriented parallel to a longitudinal axis of the railway car. The at least one compartment for transporting lading may comprise at least one hopper, and the at least one discharge opening may be formed proximate to a lower portion of the at least one hopper. In such a scenario, the common linkage may be mounted to the side sill.

In certain embodiments, the railway car may comprise at least one sidewall assembly coupled to the underframe. The at least one discharge opening may be formed in the at least one sidewall assembly. In such a scenario, the common linkage may be mounted proximate to a top chord coupled to the at least one sidewall assembly.

In certain embodiments, the common linkage may comprise a torque tube. In such a scenario, the actuator may be operable to rotate the torque tube in a clockwise direction relative to a longitudinal axis of the torque tube and in a counterclockwise direction relative to the longitudinal axis of the torque tube. In certain embodiments, the common linkage may comprise a sliding beam. In such a scenario, the actuator may be operable to push the sliding beam relative to the longitudinal axis of the railway car and pull the sliding beam relative to the longitudinal axis of the railway car. In certain embodiments, the actuator may comprise one of: a hydraulic actuator; a pneumatic actuator; and a manual actuator. In certain embodiments, the actuator may be mounted on the side sill.

Certain embodiments may have one or more technical advantages. For example, certain embodiments may increase flexibility for railcar operators in terms of placement of a discharge control system. As another example, the various embodiments described herein may advantageously allow discharge openings on a railway car to be opened one at a time instead of at the same time. As another example, certain embodiments may advantageously facilitate maintenance and service because of the location of components of the discharge control system (e.g., relative to the side sill in hopper cars or relative to the top chord in gondola cars). As another example, certain embodiments may advantageously enable a larger discharge opening to be used, increasing the speed and efficiency with which cargo can be unloaded. Additionally, placing elements of the discharge control system for a hopper car on the side sill may advantageously permit the longitudinal gates to open away from the center sill of the railway hoper car. During unloading, this may advantageously direct lading toward the center of the car, reducing the amount of lading that may spill over the rail.

FIG.1is a schematic drawing in elevation with portions broken away showing a side view of a railway car, in accordance with certain embodiments. Various features of the embodiments disclosed herein will be described with respect to hopper car20, which may be satisfactorily used to carry coal and any other suitable types of lading. Hopper car20may have any suitable dimensions. For example, in certain embodiments hopper car20may have a length between truck centers of forty (40) feet six (6) inches; a length over strikers of fifty (50) feet two and one half (2½) inches; and a length over pulling faces of fifty-three (53) feet and one (1) inch. In certain embodiments, hopper car20may have any suitable dimensions. Hopper car20may be satisfactorily used to carry bulk materials such as coal and other types of lading. Examples of additional lading include, but are not limited to, sand, grain, metal ores, aggregate and ballast.

Hopper car20may be generally described as an open hopper car with bottom discharge openings or outlets. Respective door assemblies or gates may be opened and closed to control discharge of lading from the discharge openings or outlets of hopper car20. However, the various embodiments described herein are not limited to open hopper cars or hopper cars that carry coal. For example, the various embodiments described herein may be advantageously applied to gondola cars (as described below in relation toFIG.12), closed hopper cars, articulate hopper cars, hopper cars that carry grain or any other type of hopper car and ballast car. Examples of lading carried by such hopper cars may include, but are not limited to, corn distillers dried grains (DDG), corn condensed distillers solubles (CDS), corn distillers dried grains/solubles (DDGS) and wet distillers grain with solubles (WDGS). Such products are frequently associated with ethanol production from corn and/or other types of grain.

In the example embodiment ofFIG.1, hopper car20includes a pair of sidewall assemblies30a(not shown due to the portions broken away) and30b. As shown inFIG.1, sidewall assembly30bincludes top cord32bwith a plurality of side stakes34extending between top cord32band a side sill. A plurality of metal sheets36may be securely attached with interior portions of top cord32b, side stakes34, and the side sill.

Railway car underframe50includes center sill52and a plurality of side sills. A pair of railway trucks22and24may be attached proximate opposite ends of center sill52. In certain embodiments, center sill52may have a generally rectangular cross-section with a generally triangular-shaped dome or cover disposed thereon. Center sill52may have a wide variety of configurations and designs other than a rectangular cross section. The various embodiments described herein may be used with center sills that do not have domes or covers, and are not limited to the example of center sill52. In certain embodiments, center sill52is located at the longitudinal centerline of hopper car20and defines a longitudinal axis of hopper car20.

End wall assemblies80aand80bmay have approximately the same overall configuration and dimensions. Therefore, only end wall assembly80awill be described in detail. For some applications end wall assembly80amay include sloped portion82aand a generally vertical portion84a. End wall assembly80amay be formed from one or more metal sheets86. Metal sheets86may have similar thickness and other characteristics associated with metal sheets36.

The various embodiments described herein are also applicable to other types of railway cars having a wide variety of interior supporting structures. The various embodiments described herein are not limited to hopper cars having interior cross brace assemblies or hopper cars having longitudinal discharge openings.

FIG.2is a schematic drawing in section with portions broken away taken along lines3-3ofFIG.1showing portions of a discharge control system, in accordance with certain embodiments. In other words,FIG.2illustrates a cross-section of the example hopper car20ofFIG.1. As described above, hopper car20may include a pair of sidewall assemblies30a,30b, bottom slope sheet assemblies (which may be interchangeably referred to as fixed hopper sheets)40aand40bmounted on railway car underframe50.

Railway car underframe50includes center sill52and side sills54aand54b. Center sill52is located at the longitudinal centerline of hopper car52and defines a longitudinal axis of hopper car20. Side sills54aand54bextend generally parallel with center sill52and are spaced laterally from opposite sides of center sill52. Side sills54aand54bmay have any suitable shape and any suitable dimensions. In certain embodiments, side sills54aand54bact as stiffening members that run the entire length of hopper car20. In certain embodiments, one or more components of a discharge control system (e.g., common linkage209(also referred to as torque tube209) and common linkage213(also referred to as sliding beam213)) may be mounted to side sills54aand54b. In certain embodiments, a plurality of cross bearers may be mounted on center sill52. In such a scenario, side sills54aand54bmay be attached to opposite ends of the cross bearers.

Fixed hopper sheets40aand40bmay have approximately the same overall dimensions and configuration. Fixed hopper sheets40aand40bmay be attached to respective side sills54aand54bin any suitable manner. Fixed hopper sheets40aand40bpreferably extend inward at an angle from respective side sills54aand54b. In certain embodiments, fixed hopper sheets40aand40bmay extend at an angle of approximately forty-five degrees (45°) relative to respective sidewall assemblies30aand30b, respectively. In certain embodiments, hinge point201aand hinge point201bmay be mounted to fixed hopper sheet40aand fixed hopper sheet40b, respectively. In certain embodiments, one or more elements of a discharge control system/door closing mechanism may be mounted to fixed hopper sheets40a,40b.

In the example embodiment ofFIG.2, fixed hopper sheets203a,203bare mounted on opposite sides of center sill52. In certain embodiments, fixed hopper sheets203a,203bmay be mounted on hood205. Portions of fixed hopper sheet203acooperate with adjacent portions of gate90ato define a longitudinal discharge opening207a. In a similar manner, portions of fixed hopper sheet203bcooperate with adjacent portions of gate90bto define a longitudinal discharge opening207b. Longitudinal discharge openings207aand207bare preferably disposed along opposite sides of center sill52. For some applications, hopper car20may be formed with more than one hopper and more than two longitudinal discharge openings. The various embodiments described herein are not limited to hopper cars with only two longitudinal discharge openings.

Gates90aand90bmay be formed with overall dimensions and configurations similar to fixed hopper sheets203aand203b, respectively. Gates90aand90bare preferably hinged proximate the lower portion of fixed hopper sheets40aand40b, respectively. For example, gates90aand90bmay be hinged at hinge points201aand201b, respectively. Hinge points201aand201bmay have any suitable structure. For example, in certain embodiments one or more of hinge points201aand201bmay have a structure comprising a fixed barrel and removable pin. As another example, in certain embodiments one or more of hinge points201aand201bmay have a structure comprising a fixed pin affixed to one or more plates with holes that rotate around the fixed pin. The present disclosure contemplates that hinge points201aand201bmay have any suitable structure. In certain embodiments, the type of hinge used may vary according to the discharge control system employed for opening and closing gates90.

As described in detail below, various types of discharge control systems may be employed for opening and closing longitudinal door assemblies or gates90aand90b. In the example embodiment ofFIG.2, different discharge control systems are used for gates90aand90b, respectively. More particularly,FIG.2illustrates a first example embodiment of a discharge control system that uses a rotational methodology for opening gate90a, and a second example embodiment of a discharge control system that uses a translational methodology for opening gate90b. Although the example ofFIG.2illustrates the use of different discharge control systems for each of gates90aand90b, the various embodiments described herein are not limited to the example illustrated inFIG.2. Rather, the present disclosure contemplates that in certain embodiments, gates90aand90bmay be opened and closed using the same type of discharge control system. In certain embodiments, the discharge control system associated with gate90aand the discharge control system associated with gate90bmay be operated independently. This may advantageously allow gates90aand90bto be operated separately. For example, gate90amay be opened while gate90bmay be closed.

As noted above, in the example embodiment ofFIG.2gate90ais operated using a discharge control system that uses a rotational methodology. In the example ofFIG.2, the discharge control system includes a common linkage (in this case, torque tube209) and a secondary linkage (in this case, secondary linkage211a).

In certain embodiments, torque tube209is mounted to the underside of side sill54aas shown inFIG.2. Torque tube209may be mounted to side sill54ain any suitable manner. As one example, torque tube209may be mounted to side sill54ausing a combination torque tube and door hinge hanger support, as described in more detail in relation toFIGS.5-7. As another example, torque tube209may be mounted to side sill54ausing a torque tube hangar support, as described in more detail below in relation toFIGS.8-10. In certain embodiments, torque tube209is mounted to side sill54ain a manner that allows torque tube209to rotate around a longitudinal axis of torque tube209in both a clockwise and counterclockwise manner. Rotation of torque tube209may be activated in any suitable manner. In certain embodiments, torque tube209may be activated by an actuator215a. Examples of actuator215ainclude, but are not limited to, a hydraulic actuator, a pneumatic actuator, or a manual actuator.

Torque tube209is coupled to a first end of secondary linkage211a. Torque tube209may be coupled to secondary linkage211ain any suitable manner. As one example, torque tube209may be coupled to secondary linkage211aby welding the two together. A second end of secondary linkage211ais coupled to gate90a. Secondary linkage211amay be coupled to gate90ain any suitable manner. As one example, secondary linkage211amay be coupled to gate90ausing a pinned connection. As another example, secondary linkage211amay be coupled to gate90aby welding.

Secondary linkage211amay be any suitable linkage. In some cases, secondary linkage211amay be a single element. In some cases, secondary linkage211amay be formed of a number of individual elements joined together to form secondary linkage211a. In certain embodiments secondary linkage211amay be a fixed linkage (e.g., a rigid link). In such a scenario, secondary linkage211amay, for example, comprise a bar with two pivoting rod ends. In certain embodiments, secondary linkage211amay be a single fixed linkage affixed to torque tube209using a pinned connection. In some cases, secondary linkage211amay be coupled to a spring. The spring may provide cushioning during the transition of gate90abetween a closed position (as shown inFIG.2) and an open position, and vice versa. This may advantageously improve the performance of the operating assembly while at the same time reducing wear and tear to the system. Such an arrangement for secondary linkage211amay advantageously allow gate90ato be moved from a closed position (as shown inFIG.2) to an open position, and from the open position to the closed position using a single discharge control system. In certain embodiments, secondary linkage211may be a cable. In such a scenario, the cable may be any suitable type of cable. For example, the cable may be a multi-stranded cable. Such an arrangement for secondary linkage211amay advantageously be cost-effective.

In operation, activation of torque tube209(e.g., by hydraulic, pneumatic, manual, or other suitable means) may cause torque tube209to rotate in a clockwise direction relative to its longitudinal axis. Clockwise rotation of torque tube209causes movement of secondary linkage211a. Movement of secondary linkage211ain response to clockwise rotation of torque tube209pulls gate90aaway from fixed hopper sheet203afrom the closed position illustrated inFIG.2to an open position, thereby exposing longitudinal discharge opening207a. Activation of torque tube209in the opposite direction (e.g., by hydraulic, pneumatic, manual, or other suitable means) causes torque tube209to rotate in a counterclockwise direction relative to its longitudinal axis. Counterclockwise rotation of torque tube209causes movement of secondary linkage211a. Movement of secondary linkage211ain response to counterclockwise rotation of torque tube209pushes gate90atoward fixed hopper sheet203a, thereby moving gate90afrom the open position described above to the closed position illustrated in the example embodiment ofFIG.2.

As described above, in the example embodiment ofFIG.2gate90bis operated using a discharge control system that uses a translational beam methodology. In the example ofFIG.2, the discharge control system includes a common linkage (in this case, sliding beam213) and a secondary linkage (in this case, linkage211b).

In certain embodiments, sliding beam213is mounted to the underside of side sill54b. Sliding beam213may be mounted to side sill54bin any suitable manner. As one example, sliding beam213may be mounted to side sill54busing one or more brackets. In certain embodiments, sliding beam213may be mounted to side sill54bin a manner that allows sliding beam213to move parallel to its longitudinal axis and a longitudinal axis of hopper car20(e.g., as defined by center sill52). In other words, sliding beam213may be mounted in a manner that allows sliding beam213to move into and out of the page as shown inFIG.2. Movement of sliding beam213may be activated in any suitable manner. For example, movement of sliding beam213may be activated by an actuator, such as actuator215b. Examples of an actuator for activating movement of sliding beam213include, but are not limited to, a hydraulic actuator, a pneumatic actuator, or manual actuator.

Sliding beam213is coupled to secondary linkage211b. Sliding beam213may be coupled to secondary linkage211bin any suitable manner. For example, in certain embodiments sliding beam213may be coupled to secondary linkage211avia one or more brackets. Secondary linkage211bis coupled to gate90b. Secondary linkage211bmay be any suitable linkage. In some cases, secondary linkage211bmay be a single element. In some cases, secondary linkage211bmay be formed of a number of individual elements joined together to form secondary linkage211b.

In certain embodiments secondary linkage211bmay be a fixed linkage (e.g., a rigid link). In such a scenario, secondary linkage211bmay, for example, comprise a bar with two pivoting rod ends. In certain embodiments, secondary linkage211bmay be a single fixed linkage affixed to sliding beam213using a pinned connection. In some cases, secondary linkage211bmay be coupled to a spring. The spring may provide cushioning during the transition of gate90bbetween a closed position (as shown inFIG.2) and an open position, and vice versa. This may advantageously improve the performance of the operating assembly while at the same time reducing wear and tear to the system. Such an arrangement for secondary linkage211bmay advantageously allow gate90bto be moved from a closed position (as shown inFIG.2) to an open position, and from the open position to the closed position using a single discharge control system.

In operation, activation of sliding beam213(e.g., by hydraulic, pneumatic, manual, or other suitable means) may cause sliding beam213to move parallel to a longitudinal axis of sliding beam213(and parallel to a longitudinal axis of hopper car20). Movement of sliding beam213causes movement of secondary linkage211b. For example, movement of sliding beam213parallel to a longitudinal axis of hopper car20may result in radial extension of secondary linkage211bto move gate90bfrom an open position to a closed position (as shown inFIG.2). Movement of sliding beam213in the opposite direction relative to side sill54bwill result in pulling or moving gate90bfrom the closed position (as shown inFIG.2) to an open position, which may advantageously allow for rapid discharge of any lading contained within railway hopper car20. In some cases, the secondary linkages may be pushed or pulled past center to provide a positive lock or over-center lock on gate90b.

FIG.3A-3Care schematic drawings illustrating an example embodiment in which the common linkage of the discharge control system is a sliding beam, in accordance with certain embodiments. In the examples ofFIGS.3A-3C, the discharge control system includes sliding beam213mounted to the underside of side sill54b. Similar toFIG.2described above, in the examples ofFIGS.3A-3Csliding beam213is coupled to secondary linkage211b. Secondary linkage211bcomprises an arm that connects the common linkage (i.e., sliding beam213) to gate90b. In certain embodiments, the length of secondary linkage211bmay be adjustable (for example, using a turnbuckle forming a part of secondary linkage211b). Although secondary linkage211bis illustrated as a single arm in the example ofFIG.3A, in certain embodiments additional secondary linkages can be added (for example, to accommodate heavier lading in railway hopper car20).

In the example ofFIG.3A, secondary linkage211bis coupled to gate90band sliding beam213. More particularly, a first end302aof secondary linkage211bincludes a ball joint rotatably engaged with a socket or boss coupled to sliding beam213. In certain embodiments, secondary linkage213may rotate in three dimensions (such as longitudinal, lateral and vertical relative to side sill54b). A second end302bof secondary linkage213is rotatably engaged with gate90b. In the example ofFIG.3A, gate90bis hinged to fixed hopper sheet40b. In certain embodiments, gate90bmay be hinged to any other suitable component of railway hopper car20, such as side sill54b.

In the example ofFIG.3A, gate90bis in a closed position. In the closed position, gate90bcontacts fixed hopper sheet203b, effectively preventing discharge of lading from longitudinal discharge opening207b. In certain embodiments, secondary linkage211b, while in the closed position, may be generally oriented perpendicular to sliding beam213. As noted above with respect toFIG.2, in the closed position (as shown in the example ofFIG.3A) secondary linkage211bmay be pushed or pulled past center to provide a positive lock or over-center lock on gate90b.

In the example ofFIG.3B, gate90bis shown in transition from the closed position ofFIG.3Ato an open position (as shown inFIG.3Cdescribed below). During transition from the closed position to the open position, gate90bmoves away from fixed hopper sheet203b, exposing longitudinal opening207b.FIG.3Billustrates gate90bin a partially open position such that secondary linkage213is controlling the movements of gate90bthroughout its range of motion.

In the example ofFIG.3C, gate90bis shown in the open position, exposing longitudinal discharge opening207bfor the discharge of lading from railway hopper car20. In the open position ofFIG.3C, secondary linkage211bmay rotate into a compound angle mainly oriented in the longitudinal direction parallel to the sliding beam213when gate90bis in the open position.

As described above, sliding beam213may be coupled to an actuator (e.g., a hydraulic, pneumatic, manual, or other suitable actuator) capable of causing movement of sliding beam213. The actuator may be located in any suitable area of railway hoper car20. As one example, the actuator may be mounted to side sill54b. In certain embodiments, sliding beam213may be mounted to side sill54bsuch that when movement of sliding beam213is activated by the actuator, sliding beam213moves in a first or second direction generally parallel to side sill54b. In operation, activation of sliding beam213(e.g., by hydraulic, pneumatic, manual, or other suitable means) may cause sliding beam213to move parallel to a longitudinal axis of side sill54b(and parallel to a longitudinal axis of hopper car defined by center sill52). Movement of sliding beam213causes movement of secondary linkage211b. For example, movement of sliding beam213in a first direction parallel to a longitudinal axis of hopper car20may result in radial extension of secondary linkage211bto move gate90bfrom an open position (as shown inFIG.3C) to a closed position (as shown inFIG.3A). Movement of sliding beam213in a second direction opposite the first direction will result in pulling or moving gate90bfrom the closed position (as shown inFIG.3A) to an open position (as shown inFIG.3C).

More particularly, longitudinal movement of sliding beam213in the first direction will result in radial extension of secondary linkage213to move gate90bfrom the open position (as shown inFIG.3C) to the closed position (as shown inFIG.3A). Movement of sliding beam213in the second, opposite direction relative to side sill54bwill result in pulling or moving gate90bfrom the closed position (as shown inFIG.3A) to the open position (as shown inFIG.3C), which advantageously allows discharge of lading contained within railway hopper car20.

FIG.4is a schematic drawing illustrating a first view of an example embodiment in which the common linkage of the discharge control system is a torque tube, in accordance with certain embodiments. As described above, in certain embodiments a discharge control system may employ a rotational methodology using torque tube209as the common linkage.FIG.4illustrates torque tube209(which may be mounted to the underside of side sill54bas described above in relation toFIG.2). Torque tube209is coupled to a first end402of secondary linkage211a. In certain embodiments, torque tube209is coupled to first end402of secondary linkage211aby welding. A second end404of secondary linkage211ais coupled to gate90a. In the example embodiment ofFIG.4, second end404of secondary linkage211ais coupled to gate90avia pinned connection406. Gate90ais coupled to hinge point201a. In the example ofFIG.4, gate90ais shown in a closed position. In the closed position, gate90acontacts fixed hopper sheet203a, effectively preventing discharge of lading from longitudinal discharge opening207a.

As described above, in certain embodiments torque tube209may be mounted to the underside of side sill54ain a manner that allows torque tube209to rotate around a longitudinal axis of torque tube209in both a clockwise and counterclockwise manner relative to its longitudinal axis408(as illustrated by arrows410and412, respectively). Rotation of torque tube209may be activated in any suitable manner. In certain embodiments, torque tube209may be activated by an actuator, such as actuator215adescribed above in relation toFIG.2. Examples of actuators include, but are not limited to, a hydraulic actuator, a pneumatic actuator, or a manual actuator.

In operation, activation of torque tube209(e.g., by hydraulic, pneumatic, manual, or other suitable means) may cause torque tube209to rotate in clockwise direction410relative to its longitudinal axis408. Clockwise rotation410of torque tube209causes movement of secondary linkage211a. Movement of secondary linkage211ain response to clockwise rotation410of torque tube209pulls gate90aaway from fixed hopper sheet203afrom the closed position illustrated inFIG.4to an open position (not expressly shown), thereby exposing longitudinal discharge opening207a. Activation of torque tube209in the opposite direction (i.e., counter clockwise rotation412) (e.g., by hydraulic, pneumatic, manual, or other suitable means) causes torque tube209to rotate in a counterclockwise direction relative to its longitudinal axis408. Counterclockwise rotation412of torque tube209causes movement of secondary linkage211a. Movement of secondary linkage211ain response to counterclockwise rotation412of torque tube209pushes gate90atoward fixed hopper sheet203a, thereby moving gate90afrom the open position described above to the closed position illustrated in the example embodiment ofFIG.4. The above-described movement of secondary linkage211aand gate90ais depicted inFIG.4by arrow414.

In certain embodiments, the direction of rotation of torque tube209may be reversed depending on which side of hopper car20torque tube209is placed. For example, in certain embodiments counterclockwise rotation of torque tube209may pull a gate90from a closed position to an open position and clockwise rotation may push a gate90to the closed position.

FIG.5is a schematic drawing illustrating a first view of an example embodiment of a combination torque tube and door hinge hanger support502, in accordance with certain embodiments. As described above, in certain embodiments torque tube209may be mounted to the underside of side sill54aand operate to move gate90afrom an open to a closed position, and vice versa. To facilitate proper operation of the discharge control system and torque tube209, torque tube209should be mounted in a manner that permits the rotation of torque tube209as described above in relation toFIGS.2and4. Advantageously, the example embodiment ofFIG.5provides one such mechanism for mounting torque tube209to side sill54a.

In the example ofFIG.5, torque tube209is mounted to the underside of side sill54ausing a combination hanger and door support. Combination torque tube and door hinge hanger support502is coupled to side sill54aand bottom slope sheet40a. The combination torque tube and door hinge hanger support502ofFIG.5houses both torque tube209and door hinge201a. Hanger support502may be made from any suitable materials, and may be affixed to side sill54aand bottom slope sheet40ain any suitable manner.

As shown inFIG.5, within combination torque tube and door hinge hanger support502, torque tube209is positioned within torque tube support504. Bushing506is inserted between torque tube209and torque tube support504. Bushing506may be made of any suitable material (e.g., a polymer or brass). Bushing506may advantageously facilitate rotation of torque tube209within torque tube support504and combination hanger and door support502.

FIG.6is a schematic drawing illustrating a second view of the example embodiment of the combination torque tube and door hinge hanger support ofFIG.5taken along lines A-A ofFIG.5, in accordance with certain embodiments. As shown inFIG.6, torque tube209is positioned within torque tube support504. Bushing506is inserted between torque tube209and torque tube support504to facilitate rotation of torque tube209within torque tube support504. Torque tube support504, bushing506, and torque tube209are positioned within hangar support502as illustrated inFIG.6. AlthoughFIG.6illustrates a portion of bushing506extending from torque tube support504, this is for purposes of clarity. In operation, bushing506and torque tube support504will generally be flush.

FIG.7is a schematic drawing illustrating a third view of the example embodiment of the combination torque tube and door hinge hanger support ofFIG.5taken along lines B-B ofFIG.5, in accordance with certain embodiments. As shown inFIG.7, combination torque tube and hanger support502includes hinge tube door support702and torque tube209positioned within torque tube support504.

FIG.8is a schematic drawing illustrating a first view of an example embodiment of a torque-tube hangar support802, in accordance with certain embodiments. As described above, in certain embodiments torque tube209may be mounted to the underside of side sill54aand operate to move gate90afrom an open to a closed position, and vice versa. To facilitate proper operation of the discharge control system and torque tube209, torque tube209should be mounted in a manner that permits the rotation of torque tube209as described above in relation toFIGS.2and4. Advantageously, the example embodiment ofFIG.8provides one such mechanism for mounting torque tube209to side sill54a.

In the example ofFIG.8, torque tube209is mounted to the underside of side sill54ausing hanger support802. Hanger support802may be formed from any suitable material(s). Hanger support802is coupled to hanger base plate804. Hanger support802may be coupled to hanger base plate804in any suitable manner. As one example, hanger support802may be coupled to hanger base plate804by welding. As another example, hanger support802may be removably coupled to hanger base plate804(e.g., using one or more suitable fasteners). Hanger base plate804is mounted to side sill54a. Hanger base plate804may be mounted to side sill54ain any suitable manner.

Hanger support802houses torque tube209. As shown inFIG.8, within hanger support802torque tube209is positioned within torque tube support504. Bushing506is inserted between torque tube209and torque tube support504. Bushing506may be made of any suitable material. Bushing506may advantageously facilitate rotation of torque tube209within torque tube support504and hanger support802.

FIG.9is a schematic drawing illustrating a second view of the example embodiment of the torque-tube hangar support ofFIG.8taken along lines A-A ofFIG.8, in accordance with certain embodiments. As described above, torque tube209may be positioned within torque tube support504. As shown inFIG.9, torque tube support504is positioned within hangar support802as illustrated inFIG.9. As described above, bushing may be inserted between torque tube209and torque tube support504to facilitate rotation of torque tube209within torque tube support504.

FIG.10is a schematic drawing illustrating a third view of the example embodiment of the torque-tube hangar support ofFIG.8taken along lines B-B ofFIG.9, in accordance with certain embodiments. More particularly,FIG.10illustrates a section view of torque tube209positioned in torque tube support504within hanger support802. In certain embodiments, torque tube support504may be a pipe. Torque tube209is located within torque tube support504. In the example ofFIG.10, bushing506(e.g., a polymer or brass bushing) is inserted between torque tube209and torque tube support504. Torque tube support504(together with torque tube209and bushing506is mounted to the underside of side sill54a(not expressly shown) using hangar support802as described above in relation toFIG.8.

FIG.11is a schematic drawing illustrating an example embodiment of a door hinge, in accordance with certain embodiments. More particularly,FIG.11illustrates hinge support plate1102coupled to the underside of side sill54aand bottom slope sheet40a. Hinge support plate1102may be formed from any suitable material(s). In certain embodiments, hinge support plate may be formed as a single piece or multiple pieces. Door hinge tube1104is positioned within hinge support plate1102. In certain embodiments, door hinge tube1104may be a pipe.

As described above in relation toFIG.2, gate90ais preferably hinged proximate the lower portion of fixed hopper sheet40a(e.g., at hinge point201adescribed above). Advantageously, the hinge support plate1102may provide support for hinge point201adescribed above and facilitate the movement of gate90afrom a closed position to an open position and vice versa, as described above in relation toFIGS.2-4.

Advantageously, the door hinge described above in relation toFIG.11may be used with either the rotational methodology (described above in relation toFIGS.2and4) or the translational methodology (described above in relation toFIGS.2and3A-C).

FIG.12is a schematic drawing illustrating an embodiment of a discharge control system for a gondola railway car1220, in accordance with certain embodiments. As described above, the various embodiments described herein are not limited to hopper cars and can be advantageously applied to any suitable type of railway car, such as gondola car1220. Gondola car1220may be used to carry any suitable type of lading. Gondola car1220may have any suitable dimensions. Gondola car1220may be generally described as an open gondola car with a pair of discharge openings or outlets. Respective door assemblies or gates may be opened and closed to control discharge of lading from the discharge openings or outlets of gondola car1220.

In the example embodiment ofFIG.12, gondola car1220includes a pair of sidewall assemblies1230aand1230b. As shown inFIG.12, sidewall assembly1230aincludes top chord1232aand sidewall assembly1230bincludes top cord1232b. Gondola car1220also includes a pair of end wall assemblies1280aand1280b. End wall assemblies1280aand1280bmay have approximately the same overall configuration and dimensions. In the example ofFIG.12, end wall assemblies1280aand1280bare generally vertical. In certain embodiments, end wall assemblies1280aand1280bmay be formed from one or more metal sheets. The metal sheets may have similar thickness and other characteristics.

Railway car underframe1250includes center sill1252. A pair of railway trucks1222and1224are attached proximate opposite ends of center sill1252. In certain embodiments, center sill1252may have a generally rectangular cross-section with a generally triangular-shaped dome or cover disposed thereon. Center sill1252may have a wide variety of configurations and designs other than a rectangular cross section. The various embodiments described herein may be used with center sills that do not have domes or covers, and are not limited to the example of center sill1252. In certain embodiments, center sill1252is located at the longitudinal centerline of gondola car1220and defines a longitudinal axis of gondola car1220.

In certain embodiments, railway car underframe1250may also include a plurality of side sills that extend generally parallel with center sill1252and are spaced laterally from opposite sides of center sill1252. In such a scenario, the side sills may have any suitable shape and any suitable dimensions. In certain embodiments, the side sills may act as stiffening members that run the entire length of gondola car1220. In certain embodiments, a plurality of cross bearers may be mounted on center sill1252. In such a scenario, the side sills may be attached to opposite ends of the cross bearers.

In the example embodiment ofFIG.12, gondola car1220includes a pair of longitudinal discharge openings1207a(not expressly shown) and1207bin sidewall assembly1230a. Each discharge opening1207has an associated door assembly including a gate1290. For example, discharge opening1207ais associated with a door assembly including gate1290aand discharge opening1207bis associated with a door assembly including gate1290b.

Gates1290aand1290bmay be formed with overall dimensions and configurations similar to discharge openings1207aand1207b, respectively. Gates1290aand1290bare preferably hinged to sidewall assembly1230aproximate an upper portion of discharge openings1207aand1207b, respectively. Gates1290aand1290bmay be hinged in any suitable manner (for example, using hinge points analogous to those described above in relation toFIG.2).

As described in detail below, various types of discharge control systems may be employed for opening and closing longitudinal door assemblies or gates1290aand1290b. In the example embodiment ofFIG.12, a discharge control system that uses a rotational methodology (similar to that described above in relation toFIGS.2and4) is used for gates1290aand1290b, respectively. Although the example ofFIG.12illustrates the use of a discharge control system that uses a rotational methodology, other discharge control systems may be used for each of gates1290aand1290b. For example, in certain embodiments a translational methodology (similar to that described above in relation toFIGS.2and3A-C) may be used for one or more of gates1290aand1290b. In certain embodiments, the discharge control system associated with gate1290aand the discharge control system associated with gate1290bmay be operated independently. This may advantageously allow gates1290aand1290bto be operated separately. For example, gate1290amay be closed while gate1290bis open (as shown in the example ofFIG.12).

As described above, in the example embodiment ofFIG.12gates1290aand1290bare operated using a discharge control system that uses a rotational methodology. Each discharge control system includes a common linkage1209(a torque tube in the example ofFIG.12) and a secondary linkage1211. More particularly, the discharge control system associated with gate1290aincludes torque tube1209aas the common linkage and secondary linkages1211aand1211b. The discharge control system associated with gate1290bincludes torque tube1209band secondary linkages1211cand1211d. Although the example embodiment ofFIG.12illustrates the use of torque tubes1209aand1209bwith gates1290aand1290b, respectively, the present disclosure is not limited to this example. Rather, the present disclosure contemplates that other arrangements may be used. For example, in certain embodiments a single torque tube1209may be used to operate both gates1290aand1290b. Additionally, although the example embodiment ofFIG.12illustrates the use of two secondary linkages for each discharge control system associated with gates1290aand1290b, respectively, the present disclosure is not limited to this example. Rather, the present disclosure contemplates that any suitable number of secondary linkages1211may be used (e.g., a single secondary linkage1211for each of gates1290aand1290b).

In certain embodiments, torque tubes1209aand1209bare mounted to railway car1220proximate to top chord1232a. In certain embodiments, one or more of torque tubes1209a,1209bmay be mounted to sidewall assembly1230a. In certain embodiments, one or more of torque tubes1209a,1209bmay be mounted to top chord1232a. Torque tubes1209a,1209bmay be mounted to sidewall assembly1230aor top chord1232ain any suitable manner. For example, torque tubes1209a,1209bmay be mounted to sidewall assembly1230aor top chord1232ausing a hanger support (similar to the hangar supports described above in relation toFIGS.5-10). In certain embodiments, torque tubes1209a,1209bare mounted to sidewall assembly1230aor top chord1232ain a manner that allows torque tubes1209a,1209bto rotate around longitudinal axes of torque tubes1209a,1209bin both a clockwise and counterclockwise manner. Rotation of torque tubes1209a,1209bmay be activated in any suitable manner. In certain embodiments, torque tube1209amay be activated by actuator1215a, and torque tube1209bmay be activated by actuator1215b. Examples of actuators1215a,1215binclude, but are not limited to, a hydraulic actuator, a pneumatic actuator, or a manual actuator. Although the example embodiment ofFIG.12illustrates the use of actuators1215a,1215bwith torque tubes1209a,1209b, respectively, the present disclosure is not limited to such an example. Rather, the present disclosure contemplates that any suitable number of actuators1215may be used. For example, a single actuator1215may be used in cases where the discharge control systems for gates1290aand1290buses a single torque tube1209.

In the example embodiments ofFIG.12, the discharge control systems for gates1290aand1290bhave approximately the same overall configuration and dimensions. Therefore, only the discharge control system associated with gate1290bwill be described in detail. Torque tube1209bis coupled to a first end of secondary linkage1211cand a first end of secondary linkage1211d. Torque tube1209bmay be coupled to secondary linkages1211c,1211din any suitable manner. As one example, torque tube1209bmay be coupled to secondary linkages1211c,1211dby welding. A second end of each of secondary linkages1211cand1211dis coupled to gate1290b. Secondary linkages1211cand1211dmay be coupled to gate1290bin any suitable manner. As one example, secondary linkages1211cand1211dmay be coupled to gate1290busing a pinned connection (as described above in relation toFIG.4).

Secondary linkages1211cand1211dmay be any suitable linkage. In some cases, each of secondary linkages1211cand1211dmay be a single element. In some cases, each of secondary linkages1211cand1211dmay be formed of a number of individual elements joined together to form the secondary linkage. In certain embodiments, one or more of secondary linkages1211c,1211dmay be a fixed linkage (e.g., a rigid link). In such a scenario, secondary linkages1211c,1211dmay, for example, comprise a bar with two pivoting rod ends. In certain embodiments, secondary linkages1211c,1211dmay be a single fixed linkage affixed to torque tube1209busing a pinned connection. In some cases, secondary linkages1211c,1211dmay be coupled to one or more springs. The spring may provide cushioning during the transition of gate1290bbetween a closed position (as shown for gate1290ain the example embodiment ofFIG.12) and an open position (as shown for gate1290bin the example embodiment ofFIG.12), and vice versa. This may advantageously improve the performance of the operating assembly while at the same time reducing wear and tear to the system. Such an arrangement for secondary linkages1211c,1211dmay advantageously allow gate1290bto be moved from a closed position to an open position, and from the open position to the closed position using a single discharge control system. In certain embodiments, one or more of secondary linkages1211c,1211dmay be cables. In such a scenario, the cable may be any suitable type of cable. For example, the cable may be a multi-stranded cable. As described above in relation toFIG.2, such an arrangement for secondary linkages1211c,1211dmay advantageously be cost-effective.

Similar to the example embodiments ofFIG.2andFIG.4described above, in operation, activation of torque tube1209b(e.g., by hydraulic, pneumatic, manual, or other suitable means) may cause torque tube1209bto rotate in a clockwise direction relative to its longitudinal axis. Clockwise rotation of torque tube1209bcauses movement of secondary linkages1211cand1211d. Movement of secondary linkages1211cand1211din response to clockwise rotation of torque tube1209bpulls gate1290baway from sidewall assembly1230afrom a closed position (as illustrated inFIG.12for gate1290a) to an open position, thereby exposing longitudinal discharge opening1207b. Activation of torque tube1209bin the opposite direction (e.g., by hydraulic, pneumatic, manual, or other suitable means) causes torque tube1209bto rotate in a counterclockwise direction relative to its longitudinal axis. Counterclockwise rotation of torque tube1209bcauses movement of secondary linkages1211c,1211d. Movement of secondary linkages1211cand1211din response to counterclockwise rotation of torque tube1209bpushes gate1290btoward sidewall assembly1230a, thereby moving gate1290bfrom an open position to a closed position.

In certain embodiments, the direction of rotation of torque tube209may be reversed depending on which side of gondola car1220torque tube1209bis placed. For example, in certain embodiments discharge openings1207a,1207bmay be located in sidewall assembly1230b. In such a scenario, counterclockwise rotation of torque tube1209bmay pull gate1290bfrom a closed position to an open position and clockwise rotation may push gate1290bto the closed position.

FIG.13is a flow chart of a method1300of forming a railcar, in accordance with certain embodiments. Method1300begins at step1304, where a railway underframe is formed. At step1308, at least one compartment for transporting lading is formed. At step1312, at least one discharge opening is formed.

At step1316, a door assembly is mounted adjacent to the at least one discharge opening. At step1320, at least a portion of a common linkage of a discharge control system is mounted away from a longitudinal centerline of the railway car. The common linkage is coupled to a secondary linkage coupled to the door assembly. The discharge control system is operable to move the door assembly between a first position and a second position.

At step1324, an actuator operable to drive movement of the common linkage of the discharge control system in connection with movement of the door assembly between the first position and the second position is installed. In certain embodiments, installing the actuator operable to drive movement of the common linkage of the discharge control system in connection with movement of the door assembly between the first position and the second position may comprise mounting the actuator on one or more of: a side sill of the railway car; a sidewall assembly of the railway car; a top chord of the railway car. In certain embodiments, the actuator may be one of: a hydraulic actuator; a pneumatic actuator, and a manual actuator.

In certain embodiments, the underframe may comprise a side sill oriented parallel to a longitudinal axis of the railway car. The at least one compartment for transporting lading may comprise at least one hopper. The at least one discharge opening may be formed proximate to a lower portion of the at least one hopper. The common linkage may be mounted to the side sill. In certain embodiments, the common linkage may comprise a torque tube, and the actuator may be operable to rotate the torque tube in a clockwise direction relative to a longitudinal axis of the torque tube and in a counterclockwise direction relative to the longitudinal axis of the torque tube. In certain embodiments, the common linkage may comprise a sliding beam, and the actuator may be operable to push the sliding beam relative to the longitudinal axis of the railway car and pull the sliding beam relative to the longitudinal axis of the railway car.

In certain embodiments, the method may further comprise forming at least one sidewall assembly coupled to the underframe. The at least one discharge opening may be formed in the at least one sidewall assembly. The common linkage may be mounted proximate to a top chord coupled to the at least one sidewall assembly. In certain embodiments, the common linkage may comprise a torque tube, and the actuator may be operable to rotate the torque tube in a clockwise direction relative to a longitudinal axis of the torque tube and in a counterclockwise direction relative to the longitudinal axis of the torque tube. In certain embodiments, the common linkage may comprise a sliding beam, and the actuator may be operable to push the sliding beam relative to the longitudinal axis of the railway car and pull the sliding beam relative to the longitudinal axis of the railway car.

Modifications, additions, or omissions may be made to the systems and apparatuses described herein without departing from the scope of the disclosure. The components of the systems and apparatuses may be integrated or separated. Moreover, the operations of the systems and apparatuses may be performed by more, fewer, or other components. Additionally, operations of the systems and apparatuses may be performed using any suitable logic comprising software, hardware, and/or other logic. As used in this document, “each” refers to each member of a set or each member of a subset of a set.

Modifications, additions, or omissions may be made to the methods described herein without departing from the scope of the disclosure. The methods may include more, fewer, or other steps. Additionally, steps may be performed in any suitable order.

Although this disclosure has been described in terms of certain embodiments, alterations and permutations of the embodiments will be apparent to those skilled in the art. Accordingly, the above description of the embodiments does not constrain this disclosure. Other changes, substitutions, and alterations are possible without departing from the spirit and scope of this disclosure.