Grounding devices, bogies and rail vehicles

Abstract

In an embodiment of the present application, a grounding device, a bogie and a rail vehicle are provided. The grounding device includes a friction disc and a carbon brush assembly. The friction disc is sleeved on the axle; the carbon brush assembly includes a shell, and the shell is connected to the bogie; a cavity is formed in the shell, and a notch is provided on the shell to connect the cavity. At least part of the friction disc is arranged in the notch. At least one carbon brush is arranged in the cavity, and one end of the carbon brush abuts on the friction disc, and the other end of the carbon brush is connected to the shell. The embodiment of the present application is connected to the axle through the friction disc, and a carbon brush assembly is arranged on the radial outer side of the friction disc. The carbon brush of the carbon brush assembly abuts on the friction disc, and the current is guided to the track through the axle and the wheel to achieve grounding connection. The embodiment of the present application avoids direct connection between the carbon brush and the axle, and installs the carbon brush in an area with ample space outside the axle, which is convenient for maintenance and replacement of the grounding device.

Description

Technical Field

[0001] The present application relates to rail vehicle manufacturing technology, and in particular to a grounding device, a bogie and a rail vehicle. Background Art

[0002] The bogies of rail vehicles are generally equipped with grounding devices, which are used to achieve the return grounding of the vehicle's main current and improve the vehicle's conductive performance.

[0003] In the scheme of the related technology, the grounding device is arranged on the axle box and contacts the axle through the carbon brush; when working, the current flows into the axle through the carbon brush and flows into the track through the wheel connected to the axle to realize the grounding return.

[0004] However, when the grounding device is arranged on a bogie with an internal axle box according to the solution in the related art, it is difficult to repair the contact part between the grounding device and the axle after it is damaged due to the compact internal space of the bogie. Summary of the invention

[0005] The embodiments of the present application provide a grounding device, a bogie and a rail vehicle, which are mainly used to solve the problem of difficulty in repairing the contact part between the grounding device and the axle on the bogie with built-in axle box in the related art.

[0006] According to a first aspect of an embodiment of the present application, a grounding device is provided, which is arranged on an axle of a bogie with an internal axle box, and includes:

[0007] A friction disc, wherein the friction disc is sleeved on the axle;

[0008] A carbon brush assembly, the carbon brush assembly comprising a shell, the shell being connected to the bogie; a cavity is formed in the shell, a notch connected to the cavity is provided on the shell, at least a portion of the friction disc is arranged in the notch, at least one carbon brush is provided in the cavity, one end of the carbon brush abuts against the friction disc, and the other end of the carbon brush is connected to the shell.

[0009] As for the grounding device as described above, optionally, a plurality of the carbon brushes are arranged in the cavity, and the plurality of the carbon brushes are symmetrically arranged in pairs on both sides of the friction plate.

[0010] As for the grounding device as described above, optionally, a plurality of the carbon brushes are arranged in the cavity, and the plurality of the carbon brushes are all located on the same side of the friction disk.

[0011] As for the grounding device as described above, optionally, the carbon brush is connected to the housing via an elastic member in a compressed state.

[0012] As for the grounding device as described above, optionally, the housing is connected to an axle box, a frame or an axle gear box of the bogie.

[0013] The grounding device as described above may, optionally, further include a bracket, the shell is detachably arranged on the bracket, and the shell is connected to the bogie via the bracket.

[0014] As for the grounding device as described above, optionally, the bracket is connected to the axle box, frame or axle gear box of the bogie.

[0015] As for the grounding device as described above, optionally, the friction disc is fixedly connected to the axle;

[0016] Alternatively, it further comprises a friction disc mounting seat, the friction disc is arranged on the friction disc mounting seat, and the friction disc mounting seat is fixedly connected to the axle.

[0017] According to a second aspect of an embodiment of the present application, there is provided a bogie comprising an axle, on which is provided a grounding device as described above.

[0018] According to a third aspect of an embodiment of the present application, there is provided a rail vehicle comprising a plurality of carriages connected end to end, wherein the carriages comprise a car body and a bogie disposed under the car body, and the bogie is the bogie as described above.

[0019] The grounding device, bogie and rail vehicle according to the embodiment of the present application are adopted, the grounding device includes a friction disc and a carbon brush assembly, the friction disc is sleeved on the axle; the carbon brush assembly includes a shell, and the shell is connected to the bogie; a cavity is formed in the shell, and a notch is provided on the shell to connect the cavity, at least part of the friction disc is arranged in the notch, at least one carbon brush is arranged in the cavity, one end of the carbon brush abuts on the friction disc, and the other end of the carbon brush is connected to the shell. The embodiment of the present application is connected to the axle through the friction disc, and a carbon brush assembly is arranged on the radial outer side of the friction disc. The carbon brush of the carbon brush assembly abuts on the friction disc, and the current is guided to the track through the axle and the wheel to achieve grounding connection. The embodiment of the present application avoids the direct connection between the carbon brush and the axle, and the carbon brush is installed in an area with ample space outside the axle, which is convenient for the maintenance and replacement of the grounding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 : shows a simplified structural diagram of a grounding device provided in one embodiment of the present application;

[0022] Figure 2 Shown in FIG. 1 is a cross-sectional view of a grounding device provided in one embodiment of the present application.

[0023] Reference numerals:

[0024] 10-bogie; 11-axle; 12-axle box; 13-wheel;

[0025] 100-friction disc; 110-friction disc mounting seat; 200-carbon brush assembly; 210-housing; 220-carbon brush; 230-elastic member; 300-bracket. DETAILED DESCRIPTION

[0026] In the scheme of the related art, the bogie is provided with different grounding forms according to the different installation positions of its axle box. In the bogie with external axle box, the grounding device is arranged on the axle box and contacts the end of the axle through the carbon brush; when working, the current flows into the axle through the carbon brush, and flows into the track through the wheel connected to the axle to realize grounding return. In the bogie with internal axle box, the grounding device is arranged on the axle box and directly contacts the axle through the carbon brush; when working, the current flows into the axle through the carbon brush, and flows into the track through the wheel connected to the axle to realize grounding return.

[0027] By adopting the solution in the related technology, in a bogie with an external axle box, the installation and removal of the grounding device are relatively convenient due to the ample installation space; however, in a bogie with an internal axle box, the internal space of the bogie is compact, and the installation and removal of the grounding device is relatively inconvenient, especially after the contact part between the grounding device and the axle is damaged, it is relatively difficult to repair.

[0028] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0029] Embodiment 1

[0030] Figure 1 : shows a simplified structural diagram of a grounding device provided in one embodiment of the present application; Figure 2 FIG. 1 is a cross-sectional view of a grounding device provided in an embodiment of the present application; please refer to FIG. Figure 1-Figure 2 .

[0031] The present embodiment provides a grounding device, which is arranged on the axle 11 of a bogie 10 with an internal axle box. In the present embodiment, the bogie with an internal axle box refers to a bogie with an axle box 12 arranged on the axle 11 between two wheels 13 .

[0032] The grounding device includes:

[0033] The friction disc 100 is sleeved on the axle 11. The friction disc 100 and the axle 11 can be connected directly or indirectly, and the specific connection can be selected according to actual needs.

[0034] Carbon brush assembly 200, carbon brush assembly 200 includes a housing 210 and a carbon brush disposed in housing 220. In this embodiment, housing 210 is generally in the shape of a quadrangular prism. Of course, it is clear to those skilled in the art that housing 210 may also be in any other suitable shape such as spherical, cylindrical, conical, etc. Housing 210 is connected to bogie 10, that is, housing 210 is directly or indirectly connected to bogie 10, and housing 210 may be provided with a through hole for connecting an external wire so that carbon brush 220 is connected to the external wire.

[0035] A cavity is formed in the housing 210, and the size and shape of the cavity can be set as needed, which is not limited in this embodiment. The housing 210 is provided with a notch connected to the cavity, and at least part of the friction disc 100 is arranged in the notch, that is, the friction disc 100 passes through the notch and enters the cavity, so as to facilitate contact with the parts in the cavity (that is, the carbon brush 220), avoid the carbon brush 220 from being exposed to the outside, and extend the service life of the carbon brush 220. In this embodiment, at least one carbon brush 220 is arranged in the cavity, one end of the carbon brush 220 abuts against the friction disc 100, and the other end of the carbon brush 220 is connected to the housing 210.

[0036] When the grounding device of this embodiment is in use, the carbon brush 220 is connected to the return circuit on the bogie, and the current passes through the carbon brush 220 to the friction plate 100, and is transmitted to the axle 11 and the wheel 13 in sequence through the friction plate 100, and finally transmitted to the rail to achieve grounding.

[0037] This embodiment is connected to the axle 11 through the friction disc 100, and a carbon brush assembly 200 is arranged on the radial outer side of the friction disc 100. The carbon brush 220 of the carbon brush assembly 200 abuts against the friction disc 100, and guides the current to the track through the axle 11 and the wheel 13 to achieve grounding connection. The embodiment of the present application avoids direct connection between the carbon brush 220 and the axle 11, and installs the carbon brush 220 in an area with ample space outside the axle 11, which facilitates the maintenance and replacement of the grounding device.

[0038] In an optional implementation, based on the above embodiment, a plurality of carbon brushes 220 may be provided in the cavity, and the plurality of carbon brushes 220 are symmetrically arranged in pairs on both sides of the friction disk 100. This implementation increases the contact area between the carbon brush 220 and the friction disk 100, makes it more convenient to conduct the current, and improves the fault tolerance of the device.

[0039] In another optional implementation, based on the above embodiment, a plurality of carbon brushes 220 may be provided in the cavity, and the plurality of carbon brushes 220 are all located on the same side of the friction disc 100. This implementation can also increase the contact area between the carbon brush 220 and the friction disc 100, thereby making it more convenient to conduct current and improve the fault tolerance of the device.

[0040] Preferably, the carbon brush 220 and the housing 210 of this embodiment can be connected by an elastic member 230 in a compressed state. The use of the elastic member 230 in a compressed state can ensure that the carbon brush 220 always abuts against the friction disc 100 under the action of the preload force of the elastic member 230, thereby ensuring the normal operation of the device. That is, even if the friction disc 100 has a slight position deviation during operation, the elastic member 230 can abut the carbon brush 220 against the friction disc 100 through its own expansion and contraction to ensure the normal conduction of the grounding circuit.

[0041] Optionally, the housing 210 in this embodiment may be connected to components such as the axle box 12, the frame or the axle gear box of the bogie 10, and the specific selection may be made according to needs.

[0042] like Figure 1 As shown, the grounding device of this embodiment also includes a bracket 300, and the shell 210 is detachably arranged on the bracket 300. Specifically, the bracket 300 is arranged on the side of the shell 210 away from the notch, and the shell 210 and the bracket 300 can be connected and fixed by bolt connection or other connection methods. The shell 210 is connected to the bogie 10 through the bracket 300.

[0043] Further, the bracket 300 can be connected to the axle box 12, the frame or the axle gear box of the bogie 10. In an optional embodiment, as Figure 1 As shown, the bracket 300 is connected to the axle box 12 of the bogie, and the bracket 300 includes a connecting plate connected to the housing 210 and a flange connected to the axle box 12 .

[0044] In this embodiment, the friction disc 100 can be directly fixedly connected to the axle 11; or, the friction disc 100 can be fixedly connected to the axle 11 through a friction disc mounting seat 110, and the friction disc 100 can be fixed on the friction disc mounting seat 110 by bolt connection or the like.

[0045] Embodiment 2

[0046] This embodiment provides a bogie, including an axle, on which the grounding device as described in the above embodiment 1 is provided.

[0047] The bogie of this embodiment adopts the grounding device described in the first embodiment, thereby avoiding direct connection between the carbon brush and the axle, and installing the carbon brush in an area with ample space outside the axle, which facilitates the maintenance and replacement of the grounding device.

[0048] Embodiment 3

[0049] This embodiment provides a rail vehicle, including a plurality of carriages connected end to end, the carriages including a car body and a bogie disposed under the car body, and the bogie adopts the bogie described in the above embodiment 2.

[0050] The rail vehicle of this embodiment adopts the bogie described in the above-mentioned embodiment 2, thereby avoiding direct connection between the carbon brush and the axle, and installing the carbon brush in an area with ample space outside the axle, which facilitates the maintenance and replacement of the grounding device.

[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0055] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A grounding device, arranged on the axle of a bogie with an internal axle box, characterized in that: include: A friction disc, wherein the friction disc is sleeved on the axle; A carbon brush assembly, the carbon brush assembly comprising a shell, the shell being connected to the bogie; a cavity is formed in the shell, a notch connected to the cavity is provided on the shell, at least a portion of the friction disc is disposed in the notch, at least one carbon brush is disposed in the cavity, one end of the carbon brush abuts against the friction disc, and the other end of the carbon brush is connected to the shell; A plurality of carbon brushes are arranged in the cavity, and the plurality of carbon brushes are symmetrically arranged in pairs on both sides of the friction disk; the carbon brushes are connected to the housing through an elastic member in a compressed state.

2. The grounding device according to claim 1, characterized in that: The housing is connected to an axle box, a frame or an axle gear box of the bogie.

3. The grounding device according to claim 1, characterized in that: It also includes a bracket, the shell is detachably arranged on the bracket, and the shell is connected to the bogie through the bracket.

4. The grounding device according to claim 3, characterized in that: The bracket is connected to the axle box, frame or axle gear box of the bogie.

5. The grounding device according to claim 1, characterized in that: The friction disc is fixedly connected to the axle; Alternatively, it further comprises a friction disc mounting seat, the friction disc is arranged on the friction disc mounting seat, and the friction disc mounting seat is fixedly connected to the axle.

6. A bogie, characterized in that: It comprises an axle, on which is provided a grounding device as described in any one of claims 1-5.

7. A rail vehicle, characterized in that: The invention comprises a plurality of carriages connected end to end, wherein the carriages comprise a car body and a bogie arranged under the car body, and the bogie is the bogie as claimed in claim 6.

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