Abstract:
A simulation system for a current collecting surface of a C-shaped contact rail includes a double-headed rail and a limiting plate. A current collecting end surface of the double-headed rail has a same current collection area as an actual C-shaped contact rail. The limiting plate matches the inner contour of the C-shaped contact rail. A constructed test line can simulate the current collecting status of the C-shaped contact rail. The limiting plate and the existing double-headed rail are combined, and compared with reproduction of the C-shaped contact rail, the manufacturing cycle is short, the costs are low, and it is applicable to the test line.

Description:
[0001]    This application claims the benefit of priority to Chinese Patent Application No. 201410631460.4, titled “SIMULATION SYSTEM FOR CURRENT COLLECTING SURFACE OF C-SHAPED CONTACT RAIL”, filed with the Chinese State Intellectual Property Office on Nov. 11, 2014, the entire disclosure of which is incorporated herein by reference. 
       FIELD 
       [0002]    The present application relates to the field of rail vehicle test, and particularly to a simulation system for a current collecting surface of a C-shaped contact rail. 
       BACKGROUND 
       [0003]    A contact rail, also referred to as a third rail, is a system laid along a line for supplying electrical energy to an electric vehicle. In order to ensure safety and reliability of a train before being formally delivered to operation, a series of tests are required to be applied on the train in a test line, which includes a test for the power supply system. 
         [0004]    In the power supply system, the contact rail supplies power to the train, and the train collects current via a collector shoe. Currently, in actual lines, the contact rail is an early steel C-shaped rail, production of this kind of contact rails has been stopped domestically at present, and re-production of the C-shaped contact rails will definitely result in a long production cycle, high cost and inapplicability to the test line. Hence, it is urgent to provide a simulation system to replace the C-shaped contact rail for testing the positional relationship between a collector shoe of a current collector of a newly manufactured train and an actual contact rail, and the matching status therebetween in dynamic current collecting condition on the test line. 
       SUMMARY 
       [0005]    An object of the present application is to provide a simulation system for a current collecting surface of a C-shaped contact rail, which avoids the problems of a long production cycle, high cost and inapplicability to a test line of a C-shaped contact rail resulted from using the C-shaped contact rail. 
         [0006]    A simulation system for a current collecting surface of a C-shaped contact rail is provided according to the present application, which includes an I-rail and a limiting plate, and, a lower surface of the H-shaped rail includes a first plane and a second plane, the first plane is parallel to a horizontal plane, the second plane intersects with the first plane at a first preset angle, the first plane has a specified length, the limiting plate includes a first support, a second support, and a third support which is perpendicular to the horizontal plane, the first support has a first end fixed to the third support and a second end suspended, and the first support keeps level; the second support has a first end fixed to the third support, and the second support intersects with the horizontal plane at a second preset angle; and the first support is spaced from the second support by a specified distance, and an upper surface of the H-shaped rail is fixedly connected to a lower surface of the first support. 
         [0007]    Preferably, the first preset angle is 176 degrees. 
         [0008]    Preferably, the specified length is 47 mm. 
         [0009]    Preferably, the H-shaped rail is a steel-aluminum composite H-shaped rail. 
         [0010]    Preferably, the lower surface of the H-shaped rail is made of steel. 
         [0011]    Preferably, the specified distance is 190 mm. 
         [0012]    Preferably, the second end of the first support further includes a bent portion bending downwards. 
         [0013]    Preferably, the limiting plate further includes a fourth support, the fourth support has a first end horizontally fixed to the third support and a second end suspended, and an extending direction from the first end to the second end of the fourth support is opposite to an extending direction from the first end to the second end of the first support. 
         [0014]    Preferably, the limiting plate is made of glass fiber reinforced plastic. 
         [0015]    Preferably, the second preset angle is 5 degrees. 
         [0016]    Therefore, the present application has the following beneficial effects. The simulation system for a current collecting surface of a C-shaped contact rail according to the present application consists of the H-shaped rail and the limiting plate which can simulate a C-shaped contact rail. In the present application, the current collecting end surface of the H-shaped rail has the same current collecting area as an actual C-shaped contact rail; and the limiting plate matches with an outline of an inner contour of the C-shaped contact rail, therefore the test line can well simulate the current collecting situation of a train under the condition of a C-shaped contact rail. The simulation system for the current collecting surface of the C-shaped contact rail according to the present application uses the combination of the limiting plate and a conventional H-shaped rail, and has a short production cycle, a low cost, and an applicability to the test line compared with the solution of re-producing a C-shaped contact rail which has been discontinued. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0017]    For more clearly illustrating embodiments of the present application or technical solutions in the conventional technology, drawings referred to describe the embodiments or the conventional technology will be briefly described hereinafter. Apparently, the drawings of the present application in the following description are only some examples of the present application, and for the person skilled in the art, other drawings may be obtained based on these drawings without any creative efforts. 
           [0018]      FIG. 1  is a schematic view showing the structure of a simulation system for a current collecting surface of a C-shaped contact rail according to the present application; 
           [0019]      FIG. 2  is a schematic view showing the structure of an H-shaped rail of the simulation system for the current collecting surface of the C-shaped contact rail according to the present application; 
           [0020]      FIG. 3  is a schematic view showing the structure of a limiting plate of the simulation system for the current collecting surface of the C-shaped contact rail according to the present application; and 
           [0021]      FIG. 4  is a schematic view showing the structure of another simulation system for the current collecting surface of the C-shaped contact rail according to the present application. 
       
    
    
     DETAILED DESCRIPTION 
       [0022]    The technical solutions in the embodiments of the present application will be described clearly and completely hereinafter in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only a part of the embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all of other embodiments, made by the person skilled in the art without any creative efforts, fall into the scope of the present application. 
         [0023]    A simulation system for a current collecting surface of a C-shaped contact rail is provided according to the present application, which avoids the problems of long production cycle, high cost and inapplicability to a test line of a C-shaped contact rail resulted from using the C-shaped contact rail. 
         [0024]    For those skilled in the art to better understand solutions of the present application, the present application is described in detail hereinafter in conjunction with drawings and embodiments. 
         [0025]    Referring to  FIG. 1 , a simulation system of a current collecting surface of a C-shaped contact rail according to an embodiment of the present application includes an H-shaped rail  10  and a limiting plate  20 . 
         [0026]    In a solution according to the present application, referring to  FIG. 2 , a lower surface of the H-shaped rail  10  is formed by a first plane  101  and a second plane  102  intersecting with each other. An included angle formed between the intersecting first plane  101  and second plane  102  is a first preset angle. Here, the first plane  101  is parallel to the horizontal plane, and the first plane  101  has a fixed length. 
         [0027]    In this solution, referring to  FIG. 3 , the limiting plate  20  consists of three supports, including a first support  201 , a second support  202 , and a third support  203  which is perpendicular to the horizontal plane. 
         [0028]    The respective structure of the three supports of the limiting plate  20  and the connecting relationship therebetween are as follows. The first support  201  has a first end fixed to the third support  203 , and has a second end suspended, and the first support  201  keeps level. The second support  202  has a first end fixed to the third support  203 , and the second support  202  is arranged at a specified angle, i.e., a second preset angle, with respect to the horizontal plane, and the second preset angle may be 5 degrees. 
         [0029]    A distance between the first support  201  and the second support  202  is a specified value, which is greater than the height of the H-shaped rail  10 . 
         [0030]    The H-shaped rail  10  and the limiting plate  20  are connected to each other in such a manner that an upper surface of the H-shaped rail  10  is fixedly connected to a lower surface of the first support  201  of the limiting plate  20 . 
         [0031]    The simulation system for the current collecting surface of the C-shaped contact rail according to this embodiment consists of the H-shaped rail  10  and the limiting plate  20  which can simulate a C-shaped contact rail. In the present application, the current collecting end surface of the H-shaped rail  10  has the same current collecting area as an actual C-shaped contact rail. Furthermore, after the limiting plate  20  and the H-shaped rail  10  are assembled and connected, the outline of the assembly of the limiting plate  20  and the H-shaped rail  10  matches with an outline of an inner contour of a C-shaped contact rail. 
         [0032]    On this basis, the simulation system according to the present application mounted on a test line can well simulate the current collecting situation of a train under the condition of a C-shaped contact rail. The simulation system for the current collecting surface of the C-shaped contact rail according to the present application uses the combination of the limiting plate  20  and a conventional H-shaped rail  10 , and has a short production cycle, a low cost, and an applicability to the test line compared with the solution of re-producing a C-shaped contact rail which has been discontinued. 
         [0033]    In a specific embodiment, the first preset angle between the first plane  101  and the second plane  102  is 176 degrees, i.e., an included angle between the second plane  102  and the horizontal plane is 4 degrees. 
         [0034]    With such an angle, it is not required to reduce the thickness of the second plane  102  of the lower surface of the H-shaped rail  10  by a large margin, thereby not only ensuring the strength of the H-shaped rail  10  itself, but also allowing an effective current collecting area of the H-shaped rail  10  to be same as an effective current collecting area of a C-shaped contact rail. 
         [0035]    Based on the above embodiments, the first plane  101  has a length of 47 mm, in this way, the length of the first plane  101  matches with the length of a current collecting end surface of the C-shaped contact rail, thereby realizing an accurate simulation of the current collecting end surface of the C-shaped contact rail. Test data obtained during testing the current collecting situation of the train in the test line are more accurate. 
         [0036]    Apparently, in a specific embodiment, the H-shaped rail  10  is embodied as a relatively common steel-aluminum composite H-shaped rail, which further saves the cost and shorten the production cycle. 
         [0037]    Based on the above embodiments, each of the first plane  101  and the second plane  102  of the lower surface of the H-shaped rail  10  according to an embodiment of the present application is a steel plane, has a large rigidity, and is not easy to be deformed, and is not easy to be damaged by an external force, thus the service life of the H-shaped rail is prolonged. 
         [0038]    In another embodiment according to the present application, the distance between the first support  201  and the second support  202  of the limiting plate  20  is a specified value, which conforms to a geometrical dimension of an inner contour of the C-shaped contact rail. In this way, it is better to test whether a phenomenon of exceeding the boundary or scraping the collector shoe occurs during the operation of the train. In the case that the H-shaped rail  10  is a standard H-shaped rail, since the distance between the lower surface of the H-shaped rail  10  and the second support  202  is 86 mm, the distance between the first support  201  and the second support  202  is 190 mm. 
         [0039]    Apparently, the distance between the first support  201  and the second support  202  may also be set as other values according to various types of H-shaped rails. 
         [0040]    It is to be noted that, the distance between the first support  201  and the second support  202  may be understood as the distance between the lower surface of the first support  201  and an upper surface of the second support  202 , and may also be understood as the distance between a central point of the first support  201  and a central point of the second support  202 . 
         [0041]    Further, since the second support  202  is not a horizontal line, the distance between the lower surface of the first support  201  and the upper surface of the second support  202  may be referred to as the distance between a lower surface of the second end of the first support  201  and an upper surface of the second end of the second support  202 . 
         [0042]    In other embodiments according to the present application, the second end of the first support  201  of the limiting plate  20  further has a bent portion bending downwards, which achieves a good insulation effect. 
         [0043]    Based on the above embodiments, the limiting plate  20  may be made of glass fiber reinforced plastic. The glass fiber reinforced plastic has a good rigidity, and is a good insulation material, and thus is adopted as the material of the limiting plate  20 , which well insulates the current collecting portion of the train from the environment. Thus the safety is better. 
         [0044]    In another embodiment according to the present application, referring to  FIG. 4 , the limiting plate  20  further includes a fourth support  204 . The extending direction from a first end to a second end of the fourth support  204  is opposite to the extending direction from the first end to the second end of the first support  201 . In this way, the fourth support  204  may fix the whole simulation system. To fix the simulation system, it is simply required to fix the fourth support  204  to the test line. Furthermore, the fourth support  204  may further function as a reinforcing rib, which prevents the simulated C-shaped contact rail from being deformed. 
         [0045]    On the basis of the above embodiments, the included angle between the second support  202  and the horizontal plane, i.e., the second preset angle, is a specified value, which conforms to a geometrical configuration of an inner contour of the C-shaped contact rail. 
         [0046]    A simulation system for a current collecting surface of a C-shaped contact rail according to the present application is described in detail hereinbefore. The principle and the embodiments of the present application are illustrated herein by specific examples. The above description of examples is only intended to help the understanding of the principle and the spirit of the present application. It should be noted that, for the person skilled in the art, a few of modifications and improvements may be made to the present application without departing from the principle of the present application, and these modifications and improvements are also deemed to fall into the scope of the present application defined by the claims.