Patent Publication Number: US-2023159068-A1

Title: Laser Alignment System for Railcar Mover and Method of Use

Description:
RELATED APPLICATIONS 
     This application claims priority to U.S. Provisional Patent Application No. 63/281,982 filed Nov. 22, 2021, the content of which is incorporated herein by reference in its entirety. 
    
    
     FIELD OF THE INVENTION 
     The present invention relates to the railway industry and, more particularly, to systems for aligning rail wheels on a railcar mover with a track. 
     BACKGROUND OF THE INVENTION 
     A railcar mover is a machine capable of traveling on both roads and rail tracks to efficiently move railcars. The ability to also move on roads allows the railcar mover to maneuver around a rail yard without a need for a clear path to rails cars that need to be moved. Once at a desired destination, a railcar mover must shift from road mode to rail mode—which places the rail wheels on the track—before it can move the railcars. 
     The transition from road mode to rail mode requires the operator of the railcar mover to manually align the rail wheels and the track before lowering the machine onto the rails. A number of different standard railway track gauges are utilized by different railway systems based on the country or geographic region in which the railway system is located. The use of different standard railway track gauges makes the task of aligning the rail wheels with the track more difficult. 
     When the operator is unable to successfully align the rail wheel and the track, the rail wheel will not correctly engage with the track, which can damage the railcar mover and/or track. The conventional method of relying on the operator&#39;s ability to manually align the rail wheels and the track is inefficient and potentially hazardous. As such, there is a need for a better way to align the rail wheels of railcar movers with the track. 
     SUMMARY OF THE INVENTION 
     Aspects of this disclosure relate to a laser alignment system for engaging a rail wheel of a railcar mover with a rail. The laser alignment system may comprise a laser mounted to a frame of a railcar mover that assists with the alignment of a rail wheel and the rail of a track when switching from road mode to rail mode. In various embodiments, the laser may be mounted to the frame of the railcar mover via a mount and/or mounting structure that enable the laser to be moved and/or the orientation of the laser to be adjusted relative to the railcar mover. In some embodiments, the laser alignment system may include a window underneath the operator of the railcar mover so that a laser beam emitted by the laser can be seen by the operator. 
     In various embodiments, the laser may be configured to emit a laser onto a rail wheel of the railcar mover and/or a rail underneath the railcar mover to which the railcar mover is to be engaged. In some embodiments, a laser alignment system for a railcar mover may have two or more lasers each configured to emit a laser beam onto a separate rail wheel of the railcar mover and a rail of the track upon which the rail wheel is being lowered. In some implementations, the laser alignment system (and its laser) may be activated by pressing a switch located within the railcar. In some implementations, the laser alignment system may be automatically activated or deactivated when the railcar mover switches from rail mode to road mode or from road mode to rail mode. For example, in some implementations, the laser alignment system may be automatically deactivated responsive to the railcar mover switching from road mode to rail mode. 
     These and other objects, features, and characteristics of the invention disclosed herein will become more apparent upon consideration of the following description and the appended claims with reference to the accompanying drawings, all of which form a part of this specification, wherein like reference numerals designate corresponding parts in the various figures. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the invention. As used in the specification and in the claims, the singular form of “a”, “an”, and “the” include plural referents unless the context clearly dictates otherwise. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention is illustrated by way of example and not limited in the accompanying figures in which like reference numerals indicate similar elements and in which: 
         FIG.  1    depicts a perspective view of an example laser alignment system, according to one or more aspects described herein; 
         FIG.  2 A  depicts an example mount for mounting a laser, according to one or more aspects described herein; 
         FIG.  2 B  depicts an example laser for use in a laser alignment system, according to one or more aspects described herein; 
         FIG.  3    depicts a perspective view of an example laser alignment system emitting a laser beam, according to one or more aspects described herein; 
         FIG.  4    depicts a perspective view of a laser beam of an example laser alignment system aligning a rail wheel and rail, according to one or more aspects described herein; 
         FIG.  5    depicts a perspective view of an example laser alignment system emitting a laser beam onto a rail wheel and rail; according to one or more aspects described herein; and 
         FIG.  6    depicts a flow diagram of an example method for using a laser alignment system to engage rail wheels of a railcar mover with a rail, according to one or more aspects described herein. 
     
    
    
     These drawings are provided for purposes of illustration only and merely depict typical or example embodiments. These drawings are provided to facilitate the reader&#39;s understanding and shall not be considered limiting of the breadth, scope, or applicability of the disclosure. For clarity and ease of illustration, these drawings are not necessarily drawn to scale. 
     DETAILED DESCRIPTION OF THE INVENTION 
     In the following description of various examples of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various example structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized, and structural and functional modifications may be made without departing from the scope of the present invention. Also, while the terms “top,” “bottom,” “front,” “back,” “side,” and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein as a matter of convenience, e.g., based on the example orientations shown in the figures. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of structures in order to fall within the scope of this invention. 
     Railcar movers are machines capable of operation in road mode and rail mode. In road mode, the railcar mover utilizes a set of road wheels to drive freely. In rail mode, the railcar mover utilizes a set of rail wheels that engage the rail of a train track to move along the track. The invention described herein relates to a laser alignment system that improves the function and efficiency of a railcar mover by more efficiently and accurately aligning the rail wheel and rail of a train track when shifting from road mode to rail mode. 
     For example,  FIG.  1    depicts a perspective view of a laser alignment system  100 , according to one or more aspects described herein. The laser alignment system described herein is configured to enable alignment of the rail wheel and the rail of a track when switching from road mode to rail mode. The laser alignment system  100  comprises a laser  110  mounted to a frame  140  of a railcar mover via a first mount  120  and/or a second mounting structure  130 . In various embodiments, laser  110  may be mounted to frame  140  of a railcar mover via first mount  120  attached to second mounting structure  130 . In various embodiments, second mounting structure  130  may be installed directly on a frame of a railcar mover. In various embodiments, first mount  120  may be affixed to second mounting structure  130 . In various embodiments, the first mount  120  allows the laser alignment system  100  to adjust the aim of the laser  110  in a rotational manner as required for alignment, while the second mounting structure  130  functions with the first mount  120  to allow the laser alignment system to move in a side-to-side manner as required for alignment. For example, in some embodiments, first mount  120  may comprise a flexible component configured to rotate, swivel, or be otherwise manipulated to adjust and/or establish an orientation of laser  110  relative to the railcar mover. In some embodiments, a location of laser  110  may be adjusted by adjusting the position of first mount  120  on second mounting structure  130 . For example, second mounting structure  130  may enable first mount  120  to be moved from side-to-side on second mounting structure  130  by loosening one or more screws, sliding first mount  120  laterally along second mounting structure  130 , and tightening the one or more screws to affix first mount  120  in a new position. In various embodiments, second mounting structure  130  may be affixed to or installed directly on the frame  140  of the railcar mover. Accordingly, laser  110  may be affixed to the railcar mover via first mount  120  and second mounting structure  130 . Additionally, the frame  140  and/or a floor underneath an operator of the railcar mover may comprise a window  150  so the laser beam  160  emitted by the laser alignment system  100  can be seen by an operator of the railcar mover. 
       FIG.  2 A  depicts a laser mount that can be used as the first mount  120  of the laser alignment system  100 , according to one or more aspects described herein. The first mount  120  may comprise an opening  121  for mounting of the laser  110 . The first mount  120  may also comprise screws  122  for mounting the first mount  120  to the second mounting structure  130 . The first mount  120  may be adjustable so that laser  110  may be calibrated and adjusted as required to facilitate alignment. 
       FIG.  2 B  depicts a laser that can be used as the laser  110  of the laser alignment system  100 , according to one or more aspects described herein. In various embodiments, laser  110  may be configured to emit a laser beam onto a rail of a track. While the laser depicted is round, any shape laser can be used. For example, in some embodiments, the laser  110  may comprise a Class  2  laser that emits visible light, between 380 nm and 700 nm. In other embodiments, other types of lasers or light may be used. In some embodiments, laser  110  may preferably emit green light, as green light has better visibility in high light conditions when compared to red light, which can additionally be associated with danger or alarm. However, one or more other different types of lasers may be used for laser  110 . In some embodiments, the laser  110  may be powered by a 24V power supply, of which the power supply can optionally be integral to the railcar mover. However, one or more other types of sources of power may be used to power the laser  110 . In some embodiments, the laser alignment system  100  can be configured to only be active in road mode. For example, Additionally, the laser alignment system  100  may be controlled by a switch. In some embodiments, the switch may comprise an instable switch that requires the operator to actively press the switch to produce a laser beam  160 . 
       FIG.  3    depicts a perspective view of the laser alignment system  100  mounted to the frame  140  of the railcar mover, according to one or more aspects described herein. In some embodiments, the laser alignment system is configured to produce a laser beam  160  onto a surface  200 . In some embodiments, laser beam  160  may be green in color. Utilizing this second surface  200 , the laser alignment system  100  may be adjusted to point the laser beam  160  at a desired angle to represent where a rail and rail wheel should align. In various embodiments, surface  200  may comprise (or represent) a portion of a track onto which a rail wheel of a railcar mover is being lowered. 
       FIG.  4    depicts a perspective view looking through the window  150  in the frame  140  of the railcar mover, according to one or more aspects described herein. In various embodiments, laser  110  may be configured to emit a laser beam  160  onto the rail wheel  300  and the track  400  to ensure alignment. For example, in various embodiments, the railcar mover may include window  150  in the frame  140  of the railcar mover through which the laser beam emitted by laser  110  is visible to an operator of the railcar. 
       FIG.  5    depicts another perspective view of the laser alignment system  100  mounted to the frame  140  of the railcar mover, wherein the laser beam  160  is emitted onto the rail wheel  300  and track  400  to show alignment, according to one or more aspects described herein. 
     In some embodiments, a railcar mover may be fitted with multiple laser alignment systems  100  to improve alignment by ensuring wheels on multiple sides of the railcar mover are aligned with the track. For example, in some embodiments, a railcar mover may have two or more lasers  110  each configured to emit a laser beam onto a separate rail wheel of the railcar mover and a rail of the track upon which the rail wheel is being lowered. A railcar mover fitted with multiple laser alignment systems can show improved alignment and parallelism with the rail track. 
     In order to utilize the laser alignment system  100  of the present invention, the laser alignment system  100  may be calibrated prior to use in the field. This calibration comprises adjusting the first mount  120  and the second mounting structure  130  such that the laser alignment system  100  is attached to the frame  140  of the railcar mover, and that the laser beam  160  emitted by the laser  110  shines in a position that aligns a rail wheel  300  of the railcar mover and a track  400 . When the laser alignment system  100  is calibrated in this manner, the operator of the railcar mover may engage the laser alignment system  100 , look at the track  400  (optionally through a window  150  in a frame  140  of the railcar mover), verify the laser beam  160  is shining along the track  400  (as shown in  FIG.  4   ), and then change the railcar mover from road mode to rail mode. 
       FIG.  6    depicts a flow diagram of an example process  600  for using laser alignment system  100  to engage rail wheels of a railcar mover with a rail, according to one or more aspects described herein. In an operation  602 , process  600  may include positioning a railcar mover above a rail. In some implementations, the orientation of a laser relative to the railcar mover may be adjusted by manipulating a flexible component of a mount via which the laser is mounted to the railcar mover. 
     In an operation  604 , process  600  may include activating a laser alignment system comprising a laser mounted to a frame of the railcar mover. In various implementations, the laser is configured to emit a laser beam onto a rail wheel of the railcar mover and the rail. In various implementations, activating the laser alignment system may comprise activating (or turning on) the laser. In some implementations, the laser alignment system may be activated by pressing a switch located within the railcar. In some implementations, the switch may comprise an instable switch that must be pressed and held to activate the laser alignment system. In some implementations, the laser alignment system may be automatically activated or deactivated when the railcar mover switches from rail mode to road mode or from road mode to rail mode. For example, in some implementations, the laser alignment system may be automatically deactivated responsive to the railcar mover switching from road mode to rail mode. In an operation  606 , process  600  may include aligning the rail wheel with the rail using the laser alignment system. In various implementations, aligning the rail wheel of the railcar mover with the rail may comprise viewing the laser beam emitted onto the rail wheel and the rail via a window in the frame of the railcar mover. In an operation  608 , process  600  may include lowering rail wheel to engage the rail. 
     The laser alignment system of the present invention can improve the efficiency at which the operator is able to transition the railcar mover from road mode to rail mode, while also reducing the risk of injury and damage to the railcar mover from misalignment of the rail wheel and the track. 
     It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth herein. The invention is capable of other embodiments and of being practiced or being carried out in various ways. Variations and modifications of the foregoing are within the scope of the present invention. It should be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present invention. The embodiments described herein explain the best modes known for practicing the invention and will enable others skilled in the art to utilize the invention. 
     While the preferred embodiments of the invention have been shown and described, one skilled in the relevant art will recognize that numerous variations and modifications may be made to the examples described above without departing from the scope of the present disclosure. Thus, the spirit of the invention should be construed broadly as set forth in the appended claims.