Multi-platform metro grounding device carbon brush holder

Abstract

The utility model relates to a carbon brush holder related technical field especially, it relates to a multi -platform subway grounding device carbon brush holder, including base, the front surface of base is provided with mounting panel, the rear surface fixed mounting of mounting panel has the sliding block, the front end of base is provided with slide rail, the front surface fixed mounting of mounting panel has the fixed ring, the front end of mounting panel is provided with carbon brush fixed groove, the upper end fixed mounting of carbon brush fixed groove has the spring, the lower end fixed mounting of spring has the connecting rod, the lower end fixed mounting of connecting rod has the flexible clamp plate, through carbon brush fixed groove and the flexible clamp plate of spring connection, construct dynamic clamping structure, its inboard anti -skid line provides stable contact pressure, allows carbon brush to adapt automatically in the deviation, sets up 8 second screw holes in the front end of connecting block, along four groups of preset angle distribution, every group 2 hole position, through the combination of bolt and different angle screw hole, can realize the fine adjustment of cable installation angle.

Description

Technical Field

[0001] This utility model relates to the technical field of carbon brush holders, and in particular to a carbon brush holder for a multi-platform subway grounding device. Background Technology

[0002] In the operation system of urban subway networks, grounding devices are the core link to ensure the electrical safety of trains and prevent stray current interference. As a key structural component of grounding devices, carbon brush holders need to simultaneously realize multiple functions such as carbon brush fixing, current conduction, cable installation adaptation, and tolerance to complex working conditions. With the continuous expansion of subway lines, the adaptation requirements of carbon brush holders for different lines, vehicle models, and operating scenarios are becoming increasingly diverse. They must be able to cope with changes in the routing of grounding cables due to differences in vehicle structure, maintain stable conductivity and structural rigidity in environments such as vibration and dust, and also have multi-platform versatility.

[0003] The carbon brushes in the carbon brush holder of the transmission grounding device are mostly placed directly or limited by a simple groove, lacking a special carbon brush clamping structure. They cannot be adapted to carbon brushes of different widths and thicknesses. Furthermore, the installation angle of the grounding cable is singular or the adjustment structure is complex, making it difficult to be compatible with the cable routing requirements of different vehicle models.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN208111886U that discloses a carbon brush holder for a grounding device. The patent states that "through structural optimization, the fit between the carbon brush holder and the carbon brush is made more stable, and installation and disassembly are easier, thereby ensuring the smooth operation of the grounding device, extending its lifespan, and reducing maintenance costs." However, the patent only uses a simple groove for limiting the position and lacks a dedicated carbon brush clamping structure, which makes the carbon brushes prone to shaking and shifting under train vibration conditions, and it cannot accommodate carbon brushes of different widths and thicknesses.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this utility model is to provide a carbon brush holder for a multi-platform subway grounding device, in order to solve the problems mentioned in the background art, where the carbon brushes of the transmission grounding device carbon brush holder are mostly placed directly or limited only by a simple groove, lacking a special carbon brush clamping structure, unable to adapt to carbon brushes of different widths and thicknesses, and the grounding cable installation angle is singular or the adjustment structure is complex, making it difficult to be compatible with the cable routing requirements of different vehicle models.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a carbon brush holder for a multi-platform subway grounding device, comprising a base, a mounting plate on the front surface of the base, a slider fixedly mounted on the rear surface of the mounting plate, a slide rail on the front end of the base, a fixing ring fixedly mounted on the front surface of the mounting plate, a carbon brush fixing groove on the front end of the mounting plate, a spring fixedly mounted on the upper end of the carbon brush fixing groove, a connecting rod fixedly mounted on the lower end of the spring, a flexible clamping plate fixedly mounted on the lower end of the connecting rod, a snap-fit ​​groove on the front end of the mounting plate, a connecting block fixedly mounted on the lower end of the fixing ring, a connector on the front end of the connecting block, a cable on the lower end of the connector, a limit plate on the lower end of the cable, a bolt on the front end of the limit plate, a second threaded hole on the front end of the connecting block, and a through hole on the front end of the connecting block.

[0008] Preferably, the front end of the base is provided with a first threaded hole, and there are 4 sets of the first threaded holes, which are distributed in a rectangular array at the front end of the base.

[0009] Preferably, the carbon brush fixing groove is connected to the flexible clamp by a spring.

[0010] Preferably, the connector head and the connector block are connected by bolts.

[0011] Preferably, the connector is provided with a threaded hole at the connection end with the cable, and the connector is connected to the cable by bolts.

[0012] Preferably, the connecting block and the limiting plate are connected by bolts.

[0013] Preferably, there are 8 second threaded holes, which are distributed along four sets of preset angle orientations, with 2 second threaded holes set at each set of preset angle orientations.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The carbon brush holder of the multi-platform subway grounding device constructs a dynamic clamping structure through a flexible clamp plate connected to a carbon brush fixing groove and a spring. Its inner wavy anti-slip texture provides stable contact pressure while allowing the carbon brush to automatically adapt within the deviation range. Eight second threaded holes are set at the front end of the connecting block, distributed along four sets of preset angles, with two holes in each set, to fit standard bolts. Through the combination of bolts and threaded holes at different angles, the cable installation angle can be finely adjusted. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the base and mounting plate of this utility model in mutual cooperation;

[0017] Figure 3 This is a schematic diagram of the structure in which the fixing ring and the carbon brush fixing groove of this utility model cooperate with each other;

[0018] Figure 4 This is a schematic diagram of the structure in which the connecting block and the limiting plate of this utility model cooperate with each other.

[0019] In the diagram: 1. Base; 2. Mounting plate; 3. Slider; 4. Slide rail; 5. First threaded hole; 6. Retaining ring; 7. Carbon brush retaining groove; 8. Spring; 9. Connecting rod; 10. Flexible clamping plate; 11. Snap-fit ​​groove; 12. Connecting block; 13. Connector head; 14. Cable; 15. Limiting plate; 16. Bolt; 17. Second threaded hole; 18. Through hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a carbon brush holder for a multi-platform subway grounding device, including a base 1, a mounting plate 2 on the front surface of the base 1, a slider 3 fixedly mounted on the rear surface of the mounting plate 2, a slide rail 4 at the front end of the base 1, a fixing ring 6 fixedly mounted on the front surface of the mounting plate 2, a carbon brush fixing groove 7 at the front end of the mounting plate 2, a spring 8 fixedly mounted on the upper end of the carbon brush fixing groove 7, a connecting rod 9 fixedly mounted on the lower end of the spring 8, a flexible clamping plate 10 fixedly mounted on the lower end of the connecting rod 9, a snap-fit ​​groove 11 at the front end of the mounting plate 2, a connecting block 12 fixedly mounted on the lower end of the fixing ring 6, a connector 13 at the front end of the connecting block 12, a cable 14 at the lower end of the connector 13, a limiting plate 15 at the lower end of the cable 14, a bolt 16 at the front end of the limiting plate 15, a second threaded hole 17 at the front end of the connecting block 12, and a through hole 18 at the front end of the connecting block 12.

[0022] Furthermore, the front end of the base 1 is provided with a first threaded hole 5. There are 4 sets of the first threaded holes 5, which are distributed in a rectangular array at the front end of the base 1. By setting the first threaded holes 5, the connection stability between the base 1 and the installation foundation is enhanced through multi-point fixing. The rectangular array makes the force evenly distributed to each corner of the base 1, avoiding structural deformation caused by excessive force at a single point.

[0023] Furthermore, the carbon brush fixing groove 7 and the flexible clamping plate 10 are connected by a spring 8. The spring 8 provides a continuous and adjustable preload through its own elastic deformation. When the carbon brush is inserted into the carbon brush fixing groove 7, the spring 8 is compressed to generate an initial clamping force, ensuring that the flexible clamping plate 10 is in close contact with the carbon brush surface.

[0024] Furthermore, the connector 13 and the connector block 12 are connected by bolts 16. The bolts 16 provide a rigid connection between the two through the self-locking force of the threads, ensuring that they do not loosen in the high-frequency vibration environment of the subway.

[0025] Furthermore, the connector 13 and the cable 14 are connected at the connection end with a threaded hole. The connector 13 and the cable 14 are connected by a bolt 16. The bolted connection structure between the cable 14 and the connector 13 shortens the replacement time of a single cable 14.

[0026] Furthermore, the connecting block 12 is connected to the limiting plate 15 by bolts 16. The setting of the limiting plate 15 provides the cable 14 with a dual guarantee of precise limiting and buffer protection.

[0027] Furthermore, there are 8 second threaded holes 17, which are distributed along the four sets of preset angle orientations. Two second threaded holes 17 are set at each set of preset angle orientations. Through the setting of the second threaded holes 17, the grounding cable 14 can be installed and fixed in the four sets of preset angle orientations by cooperating with the bolts 16.

[0028] Working principle: The base 1 is rigidly fixed to the subway car body or grounding base through four sets of rectangularly arranged first threaded holes 5. The mounting plate 2 slides with the slide rail 4 of the base 1 via the slider 3 at the rear, and can be flexibly adjusted along the length of the slide rail 4 to adapt to the size limitations of different installation spaces, ensuring that the overall structure is accurately aligned with the foundation of the train grounding system. After the carbon brush is inserted into the carbon brush fixing groove 7, the spring 8 applies a continuous preload to the flexible clamp 10 through the connecting rod 9. The flexible clamp 10 has elastic deformation capability due to the conductive rubber material, which can adapt to carbon brushes of different widths and thicknesses. As the carbon brush wears, the spring 8 automatically extends. The compensation gap ensures stable contact between the carbon brush and the frame, preventing loosening due to vibration. All connections are rigidly connected with bolts 16, and the contact surface is made of conductive material to ensure low resistance conduction. According to the cable routing requirements of different vehicle models, the connector 13 is fitted with the corresponding holes in the eight second threaded holes 17 on the connector block 12 through bolts 16 to fix the cable 14 at multiple angles. At the same time, the limiting plate 15 is connected to the connector block 12 through bolts to form a secondary limit on the lower end of the cable 14 to prevent axial movement. The spring 8 also has a buffer function during the carbon brush clamping process, absorbing the impact of train vibration on the carbon brush.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carbon brush holder for a multi-platform subway grounding device, comprising a base (1), characterized in that: A mounting plate (2) is provided on the front surface of the base (1), a slider (3) is fixedly installed on the rear surface of the mounting plate (2), a slide rail (4) is provided at the front end of the base (1), a fixing ring (6) is fixedly installed on the front surface of the mounting plate (2), a carbon brush fixing groove (7) is provided at the front end of the mounting plate (2), a spring (8) is fixedly installed at the upper end of the carbon brush fixing groove (7), a connecting rod (9) is fixedly installed at the lower end of the spring (8), and a flexible clamp (10) is fixedly installed at the lower end of the connecting rod (9). The mounting plate (2) has a snap-fit ​​groove (11) at its front end. A connecting block (12) is fixedly installed at the lower end of the fixing ring (6). A connector (13) is provided at the front end of the connecting block (12). A cable (14) is provided at the lower end of the connector (13). A limit plate (15) is provided at the lower end of the cable (14). A bolt (16) is provided at the front end of the limit plate (15). A second threaded hole (17) is provided at the front end of the connecting block (12). A through hole (18) is provided at the front end of the connecting block (12).

2. The carbon brush holder for a multi-platform subway grounding device according to claim 1, characterized in that: The base (1) has a first threaded hole (5) at its front end. There are four sets of the first threaded holes (5), which are arranged in a rectangular array at the front end of the base (1).

3. The carbon brush holder for a multi-platform subway grounding device according to claim 1, characterized in that: The carbon brush fixing groove (7) is connected to the flexible clamp (10) by a spring (8).

4. The carbon brush holder for a multi-platform subway grounding device according to claim 1, characterized in that: The connector (13) and the connector (12) are connected by bolts (16).

5. A carbon brush holder for a multi-platform subway grounding device according to claim 1, characterized in that: The connector (13) and the cable (14) are connected by a threaded hole at the connection end, and the connector (13) and the cable (14) are connected by a bolt (16).

6. The carbon brush holder for a multi-platform subway grounding device according to claim 1, characterized in that: The connecting block (12) is connected to the limiting plate (15) by bolts (16).

7. A carbon brush holder for a multi-platform subway grounding device according to claim 1, characterized in that: The number of the second threaded holes (17) is 8, which are distributed along the four preset angle orientations, with 2 second threaded holes (17) set at each preset angle orientation.

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