The present disclosure relates generally to railway maintenance equipment, and more specifically to a bulk storage trailer for conveying and unloading articles stored in bulk, such as railway fasteners or the like, to another railway maintenance machine.
Among various types of railway maintenance equipment, automatic spikers are known and used for driving railroad spikes into railroad ties for securing the rail to the tie plates and tie plates to the ties. The spiker is typically mounted on a spiking machine capable of traveling over railroad tracks and may be self-propelled or towable. Suitable examples of such spikers are disclosed in commonly owned U.S. Pat. Nos. 5,191,840 and 6,095,053, both of which are incorporated by reference.
During operation of conventional spikers, workers fill kegs with spikes held in a separate car or wagon, and load the filled kegs onto the spiking machine. A first worker then removes spikes from the keg, as needed, and places them in the spiker magazine. A second worker then operates the aiming and driving mechanism of the spiker to drive the spike where desired. This conventional system requires a large amount of manual labor to load the kegs with spikes and then load the kegs onto the spiking machine. In addition, manually reaching into the kegs to get the spikes wastes further time. Furthermore, space is limited on the spiking machine, so that only a few kegs can be carried on the spiking machine at one time. This limits the production capacity of the spiking machine
Another, improved system is disclosed in U.S. Pat. No. 7,216,590, incorporated by reference. In this system, a large spike storage bin or hopper is located on the rail spiker. A conveyor at the bottom of the hopper periodically delivers a supply of spikes from the hopper to an elevated tray where the spikes are easily accessed by operators. Upon receipt of the spikes from the tray, the operators load the spiker magazines by hand.
The present dispensing bulk trailer features a container for retaining bulk items such as railway fasteners, preferably spikes, and includes a lifting mechanism for pivoting the container so that the stored contents are dispensed into a desired location, such as an adjacent rail maintenance vehicle, preferably a spike driver. A retractable wedge located in one of the walls of the container is selectively operated to control the flow from the container as the container is lifted and tipped during a pivoting dispensing action.
More specifically, a detachable trailer for conveying and unloading articles in bulk, is provided, including a frame configured for movement along a substrate and supporting generally vertically extending posts, a container mounted to the frame and configured for receiving the articles, the container being pivotally movable in a swinging action about a set of pivot points disposed at or adjacent each upper end of the posts. The posts and support arms defining a support structure for the container for supporting the pivoting action of the container when filled with the articles between a storage position and a delivery position. At least one powered cylinder is connected to the frame and to the container for pivoting the container about the pivot points associated with the posts for facilitating movement of the container from a rest or travel position, and an unloading position.
In another embodiment, a bulk trailer being usable with a railway maintenance machine for conveying and unloading articles is provided, and includes a pivoting material container configured for receiving the articles, and being pivotable between an initial position and a fully extended position; and at least one wedge disposed on at least one side wall of the container, the wedge constructed and arranged to be pivotally mounted inside of the container for regulating a downward flow of the articles during a transition from the initial position and the fully extended position.
In yet another embodiment, a rail maintenance apparatus is provided for conveying and unloading railroad articles, and includes a framem, a container supported by the frame, the container configured for receiving the articles and having at least one wall provided with a wedge, the wedge constructed and arranged to rotatably alternate between an extended position and a retracted position for controlling a downward flow of the articles out of the container. At least one first cylinder associated with the container for pivoting same, and at least one second cylinder is associated with the wedge, wherein the second cylinder is connected at one end to the wedge and at an opposite end to the at least one wall.
Ha IA is a top perspective view of a bulk trailer in a first position connected to a spiking machine, incorporating the features of the present disclosure;
Referring now to
The bulk trailer 10 preferably includes a generally rectangular frame 18 supporting, among other things, a base 20, generally vertically extending posts 22, both the base and posts being connected to support arms 24, and a container 26 having a wedge 28. In the preferred embodiment, the base 20, posts 22 and support arms 24 define a support structure for the container 26 that is sufficiently strong for supporting a pivoting action of the container when filled with spikes between a storage or travel position (
Initially, the spikes are deposited into the container 26, for example, by a payloader having an electromagnet or by other lifting devices known in the art. After depositing, the spikes are stored in the container 26 for a later use by the spiking machine 12. Until then, the spikes remain in the container 26 that rests within a space defined by the base 20. The container 26 preferably has a generally quadrilateral configuration with four side walls 38, including an inclined front wall 40, and a bottom 42. While the container 26 having a square-shaped opening is shown, other geometries of container opening and shape are also contemplated. An interior portion 44 of the container 26 is further defined by radially inwardly the inclined or sloping front wall 40. Optionally, a lid (not shown) is provided to cover the container 26.
Referring now to
One feature of the container 26 is a pivotal operation relative to the posts 22. In operation, the first and second cylinders 48, 50 are actuated by a fluid power control apparatus, generally designated 52 (
Referring now to
Another feature of the container 26 is that one of the side walls 38, preferably the front wall 40, is provided with the wedge 28 for regulating a downward flow of the spikes during the unloading process. While the wedge 28 disposed on the front wall 40 of the container 26 is shown, it is contemplated that the wedge 28 can be constructed and arranged to be pivotally mounted on any one of the side walls 38. Similarly, multiple wedges disposed on any of the walls 38 are also contemplated. The second cylinder 50 rotatably extends and retracts the wedge 28 under the action of the power apparatus 52. As described in detail below, extending and retracting the wedge 28 controls the flow of the spikes out of the container 26 when it is lifted upward for the unloading. A first end 64A of the second cylinder 50 is secured to a second end 58B of the clevis flange 60. A second end 64B of the second cylinder 50 is secured to a fin 66 (
It is contemplated that either the first ends 56A, 64A and the second ends 56B, 64B of the cylinders 48, 50 can be the rod ends, or the other corresponding ends will be the blind ends. While double acting cylinders 48, 50 are shown and described, it is contemplated that various pneumatic and other piston driven assemblies may be implemented with the present disclosure as is known to those skilled in the art.
Referring now to
At this time, the wedge 28 is still extended into the interior portion 44 of the container 26 (
Referring now to
Similarly with the second position, the wedge 28 is still extended, thereby preventing the spikes in the container 26 from freely flowing into the hopper 46 of the spiking machine 12. The flow of the spikes may be greater than in the second position due to a slope created by the front wall 40; however, the flow will be intermittent at best, thereby slowing the flows of the spikes out of the container 26.
Referring now to
Although the various numbered positions were described separately above, it is contemplated that the delivery of the contents of the container 26 is moved gradually or smoothly from the rest position of
Referring now to
While a particular embodiment of the present dispensing bulk trailer has been described herein, it will be appreciated by those skilled in the art that changes and modifications may be made thereto without departing from the present disclosure in its broader aspects and as reflected in the following claims.
This application claims priority under 35 USC 119(e) from U.S. Provisional Application Ser. No. 61/846,807 filed Jul. 16, 2013.
Number | Date | Country | |
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61846807 | Jul 2013 | US |