Grounding device and grounding system for a rail vehicle

Abstract

The application discloses a grounding device and a grounding system of a rail vehicle. The grounding device comprises a mounting frame and a conductive sheet. The mounting frame comprises a first support and a second support which are connected to each other and are at an angle to each other, the first support is suitable for being connected to a bogie of the rail vehicle, the conductive sheet is in a sheet shape, the conductive sheet is suitable for being connected to a vehicle body or the bogie of the rail vehicle, the conductive sheet comprises a mounting portion and a contact portion which are connected to each other, the mounting portion is connected to the second support, and the contact portion is suitable for abutting against a grounding rail on a rail beam. According to the grounding device of the rail vehicle, the structure of the grounding device is simplified, the volume of the grounding device is reduced, the grounding device is not easy to interfere with surrounding objects during operation of the rail vehicle, the contact area of the grounding device and the grounding rail can be reduced, the wear of the conductive sheet can be reduced, and the service life of the grounding device is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit, in particular to a grounding device and a grounding system of a rail vehicle. BACKGROUND

[0002] At present, the commonly used grounding mode of the rail vehicle is to adopt the grounding shoe plus grounding rail mode, that is, the grounding shoe is installed on the bogie or the vehicle body, the grounding rail is installed on the rail beam, and the electric charge accumulated on the vehicle body due to the running of the vehicle for a distance or the leakage fault of the vehicle is guided into the grounding rail for release through the grounding shoe.

[0003] The disadvantage of this scheme is that the grounding shoe has a complex structure, the grounding rail has many parts, and there are related problems such as shoe collision and carbon slide plate wear in the actual running process, especially in the case of limited installation space, it is difficult to arrange, and the grounding shoe is easy to interfere with the surrounding parts. SUMMARY

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a grounding device of a rail vehicle, which has a simple structure, a small size, is not easy to interfere with objects in the line, and has a long service life and a small wear.

[0005] The present application also provides a grounding system of a rail vehicle with the above grounding device.

[0006] According to the grounding device of the rail vehicle of the first aspect of the present application, the grounding device comprises a mounting frame, the mounting frame comprises a first support and a second support which are connected to each other and form an angle, the first support is adapted to be connected to the bogie of the rail vehicle, and a conductive sheet which is in the form of a sheet, is adapted to be connected to the vehicle body or the bogie of the rail vehicle, and comprises a mounting portion and a contact portion which are connected to each other, the mounting portion is connected to the second support, and the contact portion is adapted to abut against the grounding rail on the rail beam.

[0007] According to the grounding device of the rail vehicle of the present application, the grounding device is provided in the form of a structure comprising a mounting frame and a conductive sheet, which simplifies the structure of the grounding device and reduces the size of the grounding device, so that the grounding device is not easy to interfere with the surrounding objects during the running of the rail vehicle. Since the grounding device contacts the grounding rail through the conductive sheet, the contact area between the grounding device and the grounding rail is reduced, so that the wear of the conductive sheet can be reduced and the service life of the grounding device can be prolonged.

[0008] According to some embodiments of the present application, the included angle between the first support and the second support is 90 degrees.

[0009] According to some embodiments of the present application, the mounting frame is a metal piece, and the grounding device comprises a connecting cable, one end of which is connected to the mounting frame and the other end of which is connected to the vehicle body or the bogie.

[0010] Optionally, one end of the connecting cable is provided with a connecting terminal, which is connected to the mounting frame, and the connecting terminal is in the form of a flat plate.

[0011] According to some embodiments of the present application, the conductive sheet has an elastic deformation capability.

[0012] According to some embodiments of the present application, an included angle between the contact surface of the conductive sheet and the grounding rail is α, and the α satisfies 60°≤α≤90°.

[0013] Optionally, the contact portion is in the form of a trapezoid, and a side wall surface of the contact portion, which abuts against the grounding rail, is inclined to extend in the width direction of the conductive sheet.

[0014] According to some embodiments of the present application, the conductive sheet is in the form of a long strip.

[0015] According to some embodiments of the present application, the conductive sheet is a carbon fiber piece or a spring steel piece.

[0016] According to some embodiments of the present application, the width direction of the conductive sheet is the same as the width direction of the contact surface of the grounding rail.

[0017] According to some embodiments of the present application, the grounding device comprises a clamping piece, which is arranged on the second bracket, and a clamping space is defined in the clamping piece, and the mounting portion is clamped in the clamping space.

[0018] Further, the clamping piece comprises two clamping sheets arranged oppositely and spaced apart, and the clamping space is defined between the two clamping sheets, and one end of each clamping sheet adjacent to the contact portion is formed as a bent section, and the bent section is inclined to extend in a direction away from the center line of the conductive sheet in the direction from the mounting portion to the contact portion.

[0019] Optionally, the bent section is in the form of an arc.

[0020] According to some optional embodiments of the present application, the grounding device comprises a fastener, which passes through the clamping piece, the conductive sheet and the second bracket to fix the clamping piece and the conductive sheet on the second bracket.

[0021] The grounding system of the rail vehicle according to the second aspect of the embodiment of the present application comprises: the grounding device of the rail vehicle according to the first aspect of the embodiment of the present application, the mounting frame is connected with the bogie of the rail vehicle, and the conductive sheet is connected with the vehicle body or the bogie of the rail vehicle; and a grounding rail, which is arranged on a track beam and is adapted to abut against the contact portion.

[0022] The grounding system of the rail vehicle according to the embodiment of the present application can prolong the service life of the grounding device and ensure reliable grounding of the rail vehicle by arranging the grounding device, which is less likely to interfere with surrounding objects during operation of the rail vehicle.

[0023] According to some embodiments of the present application, the grounding rail comprises a main body and connecting portions arranged at two ends of the main body in the length direction of the main body, the connecting portions are connected with the track beam, and the main body is spaced apart from the track beam.

[0024] Optionally, the connecting portions comprise a first connecting segment and a second connecting segment connected with each other, one end of the first connecting segment is connected with the main body, the other end of the first connecting segment extends towards the track beam, one end of the second connecting segment is connected with the other end of the first connecting segment, and the other end of the second connecting segment is connected with the track beam.

[0025] Optionally, the main body is arc-shaped and protrudes towards a direction away from the track beam.

[0026] According to some embodiments of the present application, the grounding rail is arranged on the side surface of the track beam, and the grounding rail extends along the extension direction of the track beam.

[0027] According to some embodiments of the present application, the track beam comprises two track beams arranged oppositely and spaced apart, the grounding rail is arranged between the two track beams and connected with the two track beams respectively, and the extension direction of the grounding rail is perpendicular to the extension direction of the track beam.

[0028] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0030] Figure 1 is a front view of a grounding system of a rail vehicle according to an embodiment of the present application;

[0031] Figure 2is a partial perspective view of a grounding system of a rail vehicle according to an embodiment of the present application;

[0032] Figure 3 is Figure 2 is an enlarged view of A in FIG. 1;

[0033] Figure 4 is Figure 2 is an enlarged view of B in FIG. 1;

[0034] Figure 5 is a schematic view of a grounding rail of a rail vehicle according to an embodiment of the present application;

[0035] Figure 6 is a front view of a grounding system of a rail vehicle according to another embodiment of the present application;

[0036] Figure 7 is a perspective view of a grounding system of a rail vehicle according to another embodiment of the present application;

[0037] Figure 8 is a front view of a grounding rail of a rail vehicle according to another embodiment of the present application;

[0038] Figure 9 is a top view of a grounding rail of a rail vehicle according to another embodiment of the present application;

[0039] Figure 10 is a schematic view of a cooperation between a conductive sheet and a clamping member of a grounding device according to an embodiment of the present application;

[0040] Figure 11 is Figure 10 is an enlarged view of C in FIG. 1;

[0041] Figure 12 is a schematic view of a cooperation between a conductive sheet and a grounding rail of a grounding system according to an embodiment of the present application.

[0042] Reference Signs:

[0043] grounding system 100;

[0044] grounding device 1; mounting frame 11; first support 111; first mounting hole 1111; second support 112; conductive sheet 12; mounting portion 121; contact portion 122; side wall surface 1221; clamping member 13; clamping sheet 131; bent section 1311; second mounting hole 132; third mounting hole 133; fourth mounting hole 134; fastener 14; connection cable 15; connection terminal 151;

[0045] grounding rail 2; main body 21; contact surface 211; connection portion 22; first connection section 221; second connection section 222; mounting column 23; grounding cable 24. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components or components having the same or similar functions are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0047] Reference is made below to Figures 1-12 A grounding device 1 of a rail vehicle according to an embodiment of the present application is described.

[0048] As Figures 1-12 shown, the grounding device 1 of the rail vehicle according to the first aspect embodiment of the present application comprises a mounting frame 11 and a conductive sheet 12.

[0049] Specifically, the mounting frame 11 comprises a first support 111 and a second support 112 which are connected to each other and are at an angle to each other, and the first support 111 is adapted to be connected to a bogie of the rail vehicle, for example, the first support 111 can be fixed on the bogie by bolts. Alternatively, the mounting frame 11 can be a metal piece, for example, the mounting frame 11 can be a stainless steel piece. In this way, the structural strength of the mounting frame 11 can be ensured, and the mounting frame 11 has corrosion resistance.

[0050] The conductive sheet 12 is in the form of a sheet, and the conductive sheet 12 is adapted to be connected to a vehicle body or a bogie of the rail vehicle (the connection between the conductive sheet 12 and the vehicle body or the bogie of the rail vehicle is a conductive connection), for example, the conductive sheet 12 can be conductively connected to the vehicle body or the bogie by a connecting cable 15. The mounting portion 121 of the conductive sheet 12 is connected to the second support 112, and the contact portion 122 of the conductive sheet 12 is adapted to abut against the grounding rail 2 on the rail beam.

[0051] In this way, when the grounding device 1 is used in the rail vehicle, the conductive sheet 12 of the grounding device 1 is in contact with the grounding rail 2, and the conductive sheet 12 of the grounding device 1 is connected to the vehicle body or the bogie. During operation of the rail vehicle, when the vehicle body is charged due to a distance traveled by the vehicle body or when the vehicle body is subject to a leakage fault or a lightning strike, the charge accumulated on the vehicle body can be conducted to the grounding rail 2 through the conductive sheet 12 for discharge, thereby improving the safety of the rail vehicle and ensuring the safety of passengers. It should be noted that when the conductive sheet 12 is connected to the vehicle body, the charge accumulated on the vehicle body can be directly conducted to the grounding rail 2 through the conductive sheet 12 for discharge; when the conductive sheet 12 is connected to the bogie, the charge accumulated on the vehicle body can be conducted to the conductive sheet 12 through the bogie, and then conducted to the grounding rail 2 through the conductive sheet 12 for discharge.

[0052] Therefore, the grounding device 1 is provided with the structure including the mounting frame 11 and the conductive sheet 12, the structure of the grounding device 1 is simplified, the manufacturing cost is reduced, the volume of the grounding device 1 is reduced, the mounting space of the grounding device 1 on the bogie is also small, the mounting space is saved, the bogie structure with small space can be adapted, the installation and maintenance of the grounding device 1 are facilitated, and the arrangement of the grounding device 1 on the bogie is also simple.

[0053] Since the grounding device 1 has a small volume, the grounding device 1 is not easy to interfere with surrounding objects during the operation of the railway vehicle, and the probability of collision between the grounding device 1 and the objects arranged in the operation line of the railway vehicle is greatly reduced, especially in the case of side rolling of the vehicle on a small curvature section, the grounding device 1 is not easy to interfere with the objects arranged in the line.

[0054] In addition, since the grounding device 1 is in contact with the grounding rail 2 through the conductive sheet 12, the contact area between the grounding device 1 and the grounding rail 2 is reduced, so that the wear of the conductive sheet 12 can be reduced, and the service life of the grounding device 1 is prolonged.

[0055] Optionally, the conductive sheet 12 has elastic deformation capability, which can ensure the close contact between the conductive sheet 12 and the grounding rail 2, ensure the grounding performance of the grounding device 1, and at the same time can reduce or avoid the problem of collision of the grounding device 1 during the operation of the railway vehicle.

[0056] After the grounding device 1 is installed on the bogie of the railway vehicle, the contact portion 122 of the conductive sheet 12 is in abutment with the grounding rail 2 on the rail beam, in order to ensure the close contact between the conductive sheet 12 and the grounding rail 2, the conductive sheet 12 can be elastically bent and deformed under the common extrusion of the mounting frame 11 and the grounding rail 2, so that the contact portion 122 of the conductive sheet 12 can be in close contact with the contact surface 211 of the grounding rail 2, and the good conductive contact between the conductive sheet 12 and the grounding rail 2 is maintained. And since the conductive sheet 12 is elastically bent and deformed, the contact portion 122 of the conductive sheet 12 is bent, the contact portion 122 is in contact with the contact surface 211 of the grounding rail 2 through bending, the contact area can be increased, and the reliable contact between the conductive sheet 12 and the grounding rail 2 is ensured. For example, during the process of entering the station or traveling of the railway vehicle, the conductive sheet 12 can be elastically bent and deformed to maintain the good conductive contact between the conductive sheet 12 and the grounding rail 2.

[0057] Optionally, the conductive sheet 12 can be a carbon fiber piece or a spring steel piece. Therefore, the conductive sheet 12 can have good wear resistance and good elastic deformation capability, and at the same time the conductive sheet 12 has sufficient strength.

[0058] For example, when the conductive sheet 12 is made of carbon fiber, the conductive sheet 12 can have good flexibility, and the contact surface 211 of the ground rail 2 will not be scratched or scraped during the contact of the conductive sheet 12 with the contact surface 211 of the ground rail 2 of the rail vehicle. Moreover, since the carbon fiber has very high bending resistance, the conductive sheet 12 can restore its original shape after a large bending deformation, and the good electrical and mechanical properties of the carbon fiber can further simplify the structure of the grounding device 1.

[0059] Further, the conductive sheet 12 can be made of high-conductivity carbon fiber material, so that the conductive performance of the conductive sheet 12 is 30 to 100 times higher than that of ordinary carbon fiber material, so that the current-carrying capacity of the grounding device 1 can reach the transient large current during lightning strike, thereby having good lightning protection function and further ensuring the safety of passengers.

[0060] According to the grounding device 1 of the rail vehicle of the embodiment of the present application, by arranging the grounding device 1 to include the mounting frame 11 and the conductive sheet 12, the structure of the grounding device 1 is simplified and the volume of the grounding device 1 is reduced, so that the grounding device 1 is less likely to interfere with surrounding objects during operation of the rail vehicle. Since the grounding device 1 contacts the ground rail 2 through the conductive sheet 12, the contact area between the grounding device 1 and the ground rail 2 is reduced, thereby reducing the wear of the conductive sheet 12 and prolonging the service life of the grounding device 1.

[0061] According to some embodiments of the present application, referring to Figure 1 , Figure 2 , Figure 6 and Figure 7 , the included angle between the first support 111 and the second support 112 is 90 degrees. Thus, the structure of the mounting frame 11 is simple and has high rigidity.

[0062] According to some embodiments of the present application, referring to Figure 1 and Figure 2 , the mounting frame 11 is a metal piece, so that the mounting frame 11 has good conductive performance. The grounding device 1 includes a connecting cable 15, one end of the connecting cable 15 is connected to the mounting frame 11 and the other end is connected to the vehicle body or the bogie. The above-mentioned one end of the grounding cable 24 can be connected to the first support 111, and the above-mentioned one end of the grounding cable 24 can also be connected to the second support 112. Thus, through the above-mentioned arrangement, the conductive connection between the connecting cable 15 and the conductive sheet 12 is facilitated.

[0063] Optionally, referring to Figure 3One end of the connection cable 15 has a connection terminal 151 connected to the mounting rack 11, and the connection terminal 151 is flat. Thus, the contact area between the connection cable 15 and the mounting rack 11 can be increased, and the reliability of the conductive contact between the connection cable 15 and the mounting rack 11 can be improved.

[0064] According to some embodiments of the present application, referring to Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 12 , the angle between the conductive sheet 12 and the contact surface 211 of the ground rail 2 is α, and α satisfies 60°≤α≤90°. Thus, when α=90° (referring to Figure 1 , Figure 2 , Figure 6 , Figure 7 ), the conductive sheet 12 and the contact surface 211 of the ground rail 2 can be in vertical contact, so that the contact between the conductive sheet 12 and the contact surface 211 of the ground rail 2 is more stable; when 60°≤α<90° (referring to Figure 12 ), the conductive sheet 12 and the contact surface 211 of the ground rail 2 are in inclined contact, so that the contact area between the conductive sheet 12 and the contact surface 211 of the ground rail 2 can be appropriately increased, and the reliable contact between the conductive sheet 12 and the ground rail 2 is further ensured.

[0065] Optionally, referring to Figure 12 , the contact portion 122 is formed in a trapezoidal shape, and the side wall surface 1221 of the contact portion 122 abutting against the ground rail 2 extends obliquely in the width direction of the conductive sheet 12 (referring to the direction f in Figure 12 ). Thus, the inclined contact between the conductive sheet 12 and the contact surface 211 of the ground rail 2 can be facilitated, and the area of the side wall surface 1221 of the contact portion 122 abutting against the ground rail 2 can be increased.

[0066] According to some embodiments of the present application, referring to Figure 1 , Figure 2 , Figure 6 and Figure 7 , the conductive sheet 12 is in a long strip shape. Thus, the conductive sheet 12 can withstand greater deflection without being easily broken.

[0067] According to some embodiments of the present application, referring to Figure 1 , Figure 2 and Figure 7 , the width direction of the conductive sheet 12 is parallel to the width direction of the contact surface 211 of the ground rail 2 (referring to the direction f in Figure 1 , Figure 2 and Figure 7The e direction in the figure) is the same. Thus, stable and reliable contact between the conductive sheet 12 and the grounding rail 2 can be ensured.

[0068] According to some embodiments of the present application, the contact portion 122 can include a first portion and a second portion which are perpendicular to each other, wherein the first portion is connected with the mounting portion 121 and is consistent with the extension direction of the mounting portion 121, and the second portion is adapted to abut against the contact surface 211 of the grounding rail 2. Thus, the contact area between the conductive sheet 122 and the grounding rail 2 can be appropriately increased. It should be noted that the volume proportion of the second portion of the contact portion 122 is very small compared with the whole conductive sheet 12, so that the contact area between the conductive sheet 12 and the grounding rail 2 can be appropriately increased, while the problem of serious abrasion of the traditional grounding shoe due to the too large contact area of the carbon slide plate can be avoided. Alternatively, the contact portion 122 can be formed in an L shape or a T shape, for example, the free end of the contact portion 122 can be bent to form an L shape.

[0069] According to some embodiments of the present application, Figures 1-3 、 Figure 6 、 Figure 7 、 Figure 10 and Figure 11 The grounding device 1 includes a clamping piece 13 which is provided on the second bracket 112 and defines a clamping space in the clamping piece 13, and the mounting portion 121 of the conductive sheet 12 is clamped in the clamping space. Thus, the conductive sheet 12 can be conveniently fixed on the second bracket 112 by the clamping piece 13. Alternatively, the clamping piece 13 can be a metal piece, for example, the clamping piece 13 is a stainless steel piece.

[0070] For example, when the clamping piece 13 is a metal piece, the above-mentioned connecting cable 15 can be connected with the clamping piece 13, since the contact between the clamping piece 13 and the conductive sheet 12 realizes conductive connection, and the connecting cable 15 is connected with the clamping piece 13 to realize conductive connection, so that the conductive connection between the conductive sheet 12 and the connecting cable 15 can be realized. For another example, when the clamping piece 13 is a metal piece, the above-mentioned connecting cable 15 can be connected with the clamping piece 13, and the conductive connection between the conductive sheet 12 and the connecting cable 15 can be realized by screwing through the connecting cable 15, the clamping piece 13 and the conductive sheet 12. For another example, when the clamping piece 13 is a non-metal piece, the above-mentioned connecting cable 15 can be connected with the clamping piece 13, and the conductive connection between the conductive sheet 12 and the connecting cable 15 can be realized by screwing through the connecting cable 15, the clamping piece 13 and the conductive sheet 12, and the contact of the screw with the conductive sheet 12 and the contact of the connecting cable 15.

[0071] Further, referring to Figure 3 、 Figure 7 、 Figure 10 and Figure 11The clamping piece 13 comprises two clamping pieces 131 oppositely and spacedly arranged, and a clamping space is defined between the two clamping pieces 131. One end of each clamping piece 131 adjacent to the contact portion 122 of the conductive sheet 12 is formed as a bent section 1311. In the direction from the mounting portion 121 of the conductive sheet 12 to the contact portion 122 of the conductive sheet 12, the bent section 1311 extends obliquely away from the center line of the conductive sheet 12. Thus, the assembly between the conductive sheet 12 and the clamping piece 13 is facilitated, and the clamping piece 13 clamps the mounting portion 121 of the conductive sheet 12. By forming the one end of the clamping piece 131 adjacent to the contact portion 122 of the conductive sheet 12 as the bent section 1311, the conductive sheet 12 can have a good over-bending during the bending process. When the contact portion 122 of the conductive sheet 12 is bent, the contact portion 122 can be guided and supported by the bent section 1311, so that the conductive sheet 12 is not easily broken.

[0072] Optionally, referring to Figure 3 and Figure 11 , the bent section 1311 can be formed as an arc shape. Thus, when the conductive sheet 12 is bent, the root of the contact portion 122 of the conductive sheet 12 (i.e., the portion of the contact portion 122 of the conductive sheet 12 adjacent to the mounting portion 121) can be deformed in an arc shape under the guidance of the arc-shaped bent section 1311, so that the stress concentration is reduced, and the conductive sheet 12 is not easily broken, thereby prolonging the service life of the conductive sheet 12.

[0073] According to some optional embodiments of the present application, referring to Figures 1-3 , Figure 6 and Figure 7 , the grounding device 1 comprises a fastener 14 penetrating through the clamping piece 13, the conductive sheet 12 and the second bracket 112 to fix the clamping piece 13 and the conductive sheet 12 on the second bracket 112. Thus, the conductive sheet 12 can be reliably and firmly fixed on the mounting bracket 11, and the replacement and maintenance of the conductive sheet 12 are facilitated.

[0074] Referring to Figures 1-12 , the grounding system 100 of the rail vehicle according to the second aspect of the present application comprises the grounding device 1 of the rail vehicle according to the first aspect of the present application and a grounding rail 2. The mounting bracket 11 is connected to a bogie of the rail vehicle, the conductive sheet 12 is connected to a vehicle body or the bogie of the rail vehicle, the grounding rail 2 is arranged on a rail beam, and the contact portion 122 of the conductive sheet 12 is adapted to abut against the grounding rail 2.

[0075] The grounding system 100 of the rail vehicle according to the embodiments of the present application can prolong the service life of the grounding device 1 by arranging the grounding device 1, and the grounding device 1 is not easily interfered by surrounding objects during the operation of the rail vehicle. Meanwhile, the reliable grounding of the rail vehicle can be ensured,

[0076] According to some embodiments of the present application, referring to Figure 2 、 Figures 4-9 , the grounding rail 2 comprises a main body 21 and a connecting portion 22 arranged at both ends of the main body 21 in the length direction, the connecting portion 22 is connected with the rail beam, and the main body 21 is spaced apart from the rail beam. Thus, the installation structure of the grounding rail 2 can be simplified, the installation support used in the traditional grounding rail is omitted, the installation of the grounding rail 2 is more convenient and the cost is reduced, and meanwhile, the contact surface 211 of the grounding rail 2 and the rail beam can maintain a sufficient distance, so that the interference between the grounding device 1 in contact with the grounding rail 2 and the rail beam can be further reduced. It should be explained here that the side of the main body 21 away from the rail beam is the contact surface 211 of the grounding rail 2.

[0077] Optionally, referring to Figure 4 、 Figures 6-8 , the connecting portion 22 comprises a first connecting segment 221 and a second connecting segment 222 connected with each other, one end of the first connecting segment 221 is connected with the main body 21, the other end of the first connecting segment 221 extends towards the rail beam, one end of the second connecting segment 222 is connected with the other end of the first connecting segment 221, and the other end of the second connecting segment 222 is connected with the rail beam. Thus, the bending structure formed by the connecting portion 22 can conveniently separate the main body 21 of the grounding rail 2 from the rail beam to maintain a sufficient distance.

[0078] Optionally, the main body 21 is arc-shaped and protrudes towards the direction away from the rail beam. Thus, the main body 21 can be conveniently separated from the rail beam to maintain a sufficient distance between the contact surface 211 of the grounding rail 2 and the rail beam. Moreover, since the contact surface 211 is formed as an arc surface at this time, the conductive sheet 12 of the grounding device 1 can be conveniently guided to contact the contact surface 211 of the grounding rail 2 when the conductive sheet 12 contacts the contact surface 211 of the grounding rail 2, and the vertical impact between the conductive sheet 12 and the grounding rail 2 is prevented.

[0079] According to some embodiments of the present application, referring to Figure 1 、 Figure 2 and Figure 5 , the grounding rail 2 is arranged at the side of the rail beam, and the grounding rail 2 extends along the extension direction of the rail beam. Thus, by arranging the grounding rail 2 at the side of the rail beam, the grounding device 1 can maintain good electrical contact with the grounding rail 2 under the full load, empty load or some extreme working conditions of the rail vehicle.

[0080] According to some embodiments of the present application, referring to Figures 6-9The two track beams are arranged oppositely and spacedly, the grounding rail 2 is arranged between the two track beams and connected with the two track beams respectively, and the extending direction of the grounding rail 2 is perpendicular to the extending direction of the track beams. In this way, the grounding rail 2 is arranged between the two track beams, so that the grounding rail 2 has a large arrangement space, so that the grounding rail 2 can have a larger width, and at the same time, the conductive sheet 12 of the grounding device 1 has a larger width, so that the carrying capacity of the grounding system 100 can be further increased. Moreover, since the grounding rail 2 is arranged below the vehicle body, the risk of interference between the grounding device 1 and the surrounding components in the line can be further avoided or reduced.

[0081] Reference will be made to Figures 1-11 The grounding device 1 and the grounding system 100 of the rail vehicle according to the embodiments of the present application are described in detail.

[0082] Embodiment one,

[0083] Reference Figures 1-5 In this embodiment, the grounding system 100 of the rail vehicle includes the above-mentioned grounding device 1 and the grounding rail 2. The grounding device 1 is installed on the bogie of the rail vehicle, and the grounding rail 2 is installed on the side of the track beam and extends along the extending direction of the track beam. The grounding device 1 is connected with the vehicle body or the bogie through the connecting cable 15, and the conductive sheet 12 of the grounding device 1 is in contact with the contact surface 211 of the grounding rail 2. In this way, during the operation of the rail vehicle, when the vehicle body is charged or has a leakage fault or is struck by lightning, the charge accumulated on the vehicle body can be introduced into the grounding rail 2 through the conductive sheet 12 for discharge, so as to improve the safety of the rail vehicle and ensure the safety of passengers.

[0084] Specifically, the grounding device 1 includes a mounting frame 11, a conductive sheet 12, a clamping piece 13, a fastener 14 and a connecting cable 15. The mounting frame 11 is a stainless steel part, and includes the above-mentioned first bracket 111 and the second bracket 112. The first bracket 111 and the second bracket 112 are both in the shape of a long strip, and the included angle between the first bracket 111 and the second bracket 112 is 90 degrees. The mounting frame 11 is in the shape of L as a whole. Two first mounting holes 1111 are formed on the first bracket 111, and two bolts are respectively arranged through the two first mounting holes 1111 and connected with the bogie, so as to fix the mounting frame 11 on the bogie.

[0085] The conductive sheet 12 is in a long strip shape, the conductive sheet 12 is a carbon fiber piece, the conductive sheet 12 is connected with the second support 112 and is arranged perpendicularly to the second support 112. The clamping piece 13 includes the two clamping pieces 131 described above, the clamping piece 131 is a stainless steel piece, and the mounting portion 121 of the conductive sheet 12 is clamped in the clamping space defined by the two clamping pieces 131. The clamping piece 13 is formed with the second mounting hole 132, the third mounting hole 133 and the fourth mounting hole 134 which are arranged at intervals along the length direction of the clamping piece 13, the fastener 14 passes through the connecting cable 15, the first mounting hole 1111, the conductive sheet 12 and the second support 112, the fastener 14 passes through the second mounting hole 132, the conductive sheet 12 and the second support 112, and the bolt passes through the third mounting hole 133 and the conductive sheet 12. In this way, the conductive sheet 12 can be fixed on the mounting rack 11, and at the same time, the conductive connection between the connecting cable 15 and the conductive sheet 12 can be realized, and the fixed clamping of the conductive sheet 12 in the clamping piece 13 can be ensured.

[0086] One end of each clamping piece 131 adjacent to the contact portion 122 of the conductive sheet 12 is formed as a bending section 1311, which extends obliquely away from the center line of the conductive sheet 12 in the direction from the mounting portion 121 of the conductive sheet 12 to the contact portion 122 of the conductive sheet 12, and is formed in an arc shape. The width direction of the conductive sheet 12 is the same as the width direction of the contact surface 211 of the grounding rail 2. The contact portion 122 of the conductive sheet 12 is in contact with the contact surface 211 of the grounding rail 2, and the conductive sheet 12 is in a curved state under the common extrusion of the mounting rack 11 and the grounding rail 2, so that the close contact between the conductive sheet 12 and the grounding rail 2 can be ensured. Moreover, when the conductive sheet 12 is bent, the root of the contact portion 122 of the conductive sheet 12 can be deformed in an arc shape under the guidance of the arc-shaped bending section 1311, so that the stress concentration is reduced, the conductive sheet 12 is less likely to be broken, and the service life of the conductive sheet 12 is prolonged.

[0087] The grounding rail 2 includes a main body 21 and a connecting portion 22 connecting the two ends of the main body 21 in the length direction, the connecting portion 22 includes the first connecting section 221 and the second connecting section 222 described above, the first connecting section 221 extends obliquely toward the direction of the track beam in parallel to the extension direction of the track beam, and the second connecting section 222 is parallel to the extension direction of the track beam, and the included angle between the first connecting section 221 and the second connecting section 222 is an obtuse angle, so that the connecting portion 22 is in a bending structure, thereby spacing the main body 21 of the grounding rail 2 from the track beam, and further ensuring that the contact surface 211 of the grounding rail 2 has sufficient distance from the track beam. Further, the main body 21 is arc-shaped and protrudes away from the track beam, which can better achieve the spacing of the main body 21 from the track beam, and can conveniently guide the contact of the conductive sheet 12 with the contact surface 211 of the grounding rail 2, and prevent the vertical impact between the conductive sheet 12 and the grounding rail 2.

[0088] The main body 21 of the grounding rail 2 can be connected with the grounding rail 2 by long screws, so that the main body 21 is spaced apart from the rail beam, and the grounding rail 2 can be reliably connected to the rail beam. The connecting portion 22 of the grounding rail 2 is provided with a mounting column 23 for mounting and fixing the grounding cable 24. The mounting column 23 can be welded to the connecting portion 22 of the grounding rail 2, and the mounting column 23 is a metal piece.

[0089] The grounding system 100 of the embodiment can be used for platform grounding or full-line grounding. According to the structural size of the two marshalling vehicles and considering the influence of the rail length of the grounding rail 2, the grounding device 1 is installed on the bogie between the two marshalling vehicles. For example, the interval between the two grounding devices 1 can be 3800mm, and the grounding rail 2 can be arranged at an interval of 3780mm, and the adjacent grounding rails 2 are connected by copper wires.

[0090] The grounding system 100 of the track vehicle of the embodiment simplifies the structure of the grounding device 1, reduces the volume of the grounding device 1, and makes the grounding device 1 not easy to interfere with the surrounding objects during the operation of the track vehicle. The close contact between the conductive sheet 12 and the grounding rail 2 can be ensured, the grounding performance of the grounding device 1 can be ensured, the contact area 211 between the grounding device 1 and the grounding rail 2 can be reduced, and thus the wear of the conductive sheet 12 can be reduced and the service life of the grounding device 1 can be prolonged. In addition, the installation structure of the grounding rail 2 can be simplified, and the mounting frame 11 used by the traditional grounding rail 2 is omitted, so that the installation of the grounding rail 2 is more convenient and the cost is reduced, and the distance between the contact surface 211 of the grounding rail 2 and the rail beam can be ensured, so that the interference between the grounding device 1 in contact with the grounding rail 2 and the rail beam can be further reduced. In addition, by arranging the grounding rail 2 on the side of the rail beam, the grounding device 1 and the grounding rail 2 can still maintain good electrical contact under the conditions of full load, empty load or some extreme conditions of the track vehicle.

[0091] Embodiment two,

[0092] Referring to Figures 6-11The main difference between the grounding system 100 in the embodiment and the grounding system 100 in the first embodiment is that the extension direction of the conductive sheet 12 of the grounding device 1 is consistent with the extension direction of the first support 111 of the mounting frame 11; the second mounting hole 132 and the third mounting hole 133 are formed on the clamping piece 13 and are spaced along the length direction of the clamping piece 13; the fastener 14 passes through the connecting cable (not shown), the first mounting hole 1111, the conductive sheet 12 and the second support 112, and the fastener 14 passes through the second mounting hole 132, the conductive sheet 12 and the second support 112; the grounding rail 2 is arranged between two track beams, and the two connecting portions 22 of the grounding rail 2 are connected with the two track beams respectively; the included angle between the first connecting segment 221 and the second connecting segment 222 of the connecting portion 22 is a right angle.

[0093] The other structures of the grounding system 100 in the embodiment are the same as the corresponding structures of the grounding system 100 in the first embodiment, and will not be described here.

[0094] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0095] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A grounding device for a rail vehicle, characterized in that The mounting frame comprises a first support and a second support connected to each other and angled to each other, the first support being adapted to be connected to a bogie of the railway vehicle; The conductive sheet is in the shape of a sheet, the conductive sheet being adapted to be connected to a car body or the bogie of the railway vehicle, the conductive sheet comprising a mounting portion and a contact portion connected to each other, the mounting portion being connected to the second support, the contact portion being adapted to abut against a ground rail on a track beam; An angle between the contact surface of the conductive sheet and the ground rail is α, the α satisfying 60°≤α≤90°; The contact portion is formed in the shape of a trapezoid, in a width direction of the conductive sheet, a side wall surface of the contact portion abutting against the ground rail is inclined to extend; The clamping member is provided on the second support, the clamping member defining a clamping space therein, the mounting portion being clamped in the clamping space; The clamping member comprises two clamping sheets oppositely and spacedly arranged, the clamping space being defined between the two clamping sheets, one end of each of the clamping sheets adjacent to the contact portion being formed in a bent segment, the bent segment being inclined to extend in a direction away from a center line of the conductive sheet in a direction from the mounting portion to the contact portion. The angle between the first support and the second support is 90 degrees.

2. The track vehicle grounding device according to claim 1, characterized in that The mounting frame is a metal member, the grounding device comprising a connecting cable, one end of the connecting cable being connected to the mounting frame and the other end being connected to the car body or the bogie.

3. The track vehicle grounding device of claim 1, wherein, One end of the connecting cable has a connecting terminal connected to the mounting frame, the connecting terminal being in the shape of a flat plate.

4. The track vehicle grounding device of claim 3, wherein, The conductive sheet has an elastic deformation capability.

5. The track vehicle grounding device of claim 1, wherein, The conductive sheet is in the shape of a long strip.

6. The track vehicle grounding device of claim 1, wherein, The conductive sheet is a carbon fiber member or a spring steel member.

7. The track vehicle grounding device of claim 1, wherein, The width direction of the conductive sheet is the same as the width direction of the contact surface of the ground rail.

8. The track vehicle grounding device of claim 1, wherein, The bent segment is formed in the shape of an arc.

9. The track vehicle grounding device of claim 1, wherein, The fastener passes through the clamping member, the conductive sheet and the second support to fix the clamping member and the conductive sheet on the second support.

10. The track vehicle grounding device of claim 9, wherein, The grounding device of the railway vehicle according to any one of claims 1-10, the mounting frame being connected to a bogie of the railway vehicle, the conductive sheet being connected to a car body or the bogie of the railway vehicle; The ground rail is provided on a track beam, the contact portion being adapted to abut against the ground rail.

11. A grounding system of a rail vehicle, characterized in that The ground rail comprises a main body and connecting portions provided at two ends of the main body in a length direction of the main body, the connecting portions being connected to the track beam, the main body being spaced apart from the track beam. The connecting portion comprises a first connecting segment and a second connecting segment connected to each other, one end of the first connecting segment being connected to the main body, the other end of the first connecting segment extending toward the track beam, one end of the second connecting segment being connected to the other end of the first connecting segment, and the other end of the second connecting segment being connected to the track beam. The main body is in the shape of an arc and protrudes in a direction away from the track beam.

12. The track vehicle grounding system of claim 11, wherein, The ground rail is provided on a side surface of the track beam, and the ground rail extends along an extension direction of the track beam.

13. A track vehicle grounding system according to claim 12, characterised in that, ​ 14. The track vehicle grounding system of claim 12, wherein, ​ 15. The track vehicle grounding system according to any one of claims 11-14, characterized in that, ​ 16. The track vehicle grounding system according to any one of claims 11-14, characterized in that, The track beams comprise two oppositely and spacedly arranged track beams, the grounding rails are arranged between the two track beams and connected with the two track beams respectively, and the extending direction of the grounding rails is perpendicular to the extending direction of the track beams.

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