A new type of built-in bogie grounding device for urban express rail

Abstract

This utility model relates to the technical field of urban rapid transit, and in particular to a novel built-in bogie grounding device for urban rapid transit. The device includes a housing with end caps fixedly connected to its surface. An insulating plate is installed on the inner wall of the housing, and a conductive block is installed inside the insulating plate. A first spring is mounted on the outer wall of one end of the conductive block, and a stop block is mounted on the surface of one end of the first spring. A fan is mounted on the outer wall of the rotating shaft, and a rotating plate is mounted on the outer wall of the rotating shaft. A grounding block is mounted on the outer wall of the rotating plate. This built-in bogie grounding device uses the rotating plate to push the conductive block, causing the rotating shaft to rotate synchronously, driving the fan to rotate. Carbon dust generated during the rotation of the carbon brush ring is discharged through the dust outlet, ensuring the internal components are clean and free of debris. A second spring is fixed to the inner wall of the device, and the first spring is pre-compressed, comprehensively ensuring the operational stability and service life of the core components of the device.

Description

Technical Field

[0001] This utility model relates to the technical field of urban rapid transit, and in particular to a novel built-in bogie grounding device for urban rapid transit. Background Technology

[0002] In urban rapid transit systems, the bogie, as the core running component of the vehicle, needs to achieve current conduction and safe discharge through a grounding device. Its performance directly affects the stability of train operation and the safety of the electrical system. The built-in bogie grounding device for urban rapid transit is a key device installed at the bogie axle end or the traction motor gearbox axle to achieve current return and grounding protection.

[0003] Grounding devices typically use carbon brushes to conduct current through contact with a friction disc. The wear particles and dust generated during the use of carbon brushes, and the accumulation of dust from the friction of the brush rings, make cleaning extremely difficult due to space constraints. This dust accumulation in confined spaces can easily lead to electrical faults such as short circuits and leakage, seriously affecting the normal operation of the train's electrical system. Furthermore, during operation, the vibration of the grounding device poses a potential threat to the safe operation of its internal mechanisms. Therefore, it is urgent to develop a new type of grounding device suitable for built-in axle box bogies that can effectively solve the problem of damage to the mechanism due to vibration and improve the device's performance. Utility Model Content

[0004] The purpose of this invention is to provide a novel built-in bogie grounding device for urban rapid transit, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel built-in bogie grounding device for urban rapid transit includes a housing, an end cap fixedly connected to the surface of the housing, a cable conduit opened on the surface of the housing, a screw penetrating the surface of the end cap, an insulating plate installed on the inner wall of the housing, a conductive block installed inside the insulating plate, a first spring provided on the outer wall of one end of the conductive block, a stop block installed on the surface of one end of the first spring, a first bearing provided on the outer wall of the stop block, a rotating shaft provided on the inner wall of the first bearing, a fan installed on the outer wall of the rotating shaft, a rotating plate provided on the outer wall of the rotating shaft, a grounding block installed on the outer wall of the rotating plate, a second spring installed on the outer wall of the insulating plate, a second bearing installed at one end of the second spring, a carbon brush ring provided on the inner wall of the housing, and a rotating ring provided on the inner wall of the carbon brush ring.

[0006] Preferably, the inner wall of the insulating plate is provided with an electric brush groove, and the outer shell is rotatably connected to the carbon brush ring.

[0007] Preferably, the surface of the rotating plate is provided with a dust discharge port, and the first bearing is rotatably connected to the rotating shaft.

[0008] Preferably, a first slider is provided on the outer wall of the second bearing, and the first slider is slidably connected to the outer shell.

[0009] Preferably, a protective sleeve is installed on the inner wall of the outer shell, and a second sliding groove is formed on the inner wall of the protective sleeve.

[0010] Preferably, the stop block is slidably connected to the protective sleeve, and a first groove is provided on the inner wall of the outer shell.

[0011] Preferably, a second slider is provided on the outer wall of the first bearing, and the second slider is slidably connected to the second groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects: (1) This utility model pushes the rotating plate towards the conductive block and pushes the carbon brush ring along the groove on the surface of the insulating plate to slowly move towards the direction of the second spring; one end of the second spring is fixed to the inner wall of the device, and at the same time, it moves along the guide rod inside the device towards the direction of the first spring; the first spring is in a pre-compressed state beforehand, and will further contract under the pressure of the stop block, effectively weakening the pressure of the carbon brush ring on the insulating plate, playing a good buffer protection role for the insulating plate, preventing the insulating plate from cracking and the insulation performance from deteriorating due to overload, and fully ensuring the operational stability and service life of the core components of the device.

[0013] (2) This utility model uses the rotation of the rotating plate to drive the rotating shaft to rotate synchronously, and the rotation of the rotating shaft to drive the fan to rotate synchronously. The carbon powder generated when the carbon brush ring rotates is discharged through the dust discharge port to ensure that the internal components are clean and free of debris. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the interaction between the rotating shaft and the fan in this utility model; Figure 3 This is a schematic diagram of the structure in which the insulating plate and the conductive block of this utility model cooperate. Figure 4 This is a schematic diagram of the interaction between the first spring and the stop block of this utility model; Figure 5 This is a schematic diagram of the structure in which the first slider and the first groove of this utility model cooperate with each other.

[0015] In the diagram: 1. Outer shell; 2. End cap; 3. Cable conduit; 4. Screw; 5. Rotating plate; 6. Grounding block; 7. Insulating plate; 8. Conductive block; 9. First spring; 10. Stop block; 11. First bearing; 12. Shaft; 13. Fan; 14. Second spring; 15. Second bearing; 16. Carbon brush ring; 17. Rotating ring; 18. First slider; 19. First slide groove; 20. Second slider; 21. Second slide groove; 22. Protective sleeve; 23. Dust outlet; 24. Cable tray. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-5 This utility model provides a technical solution: a novel built-in bogie grounding device for urban rapid transit, comprising a housing 1, an end cap 2 fixedly connected to the surface of the housing 1, a cable conduit 3 opened on the surface of the housing 1, a screw 4 penetrating the surface of the end cap 2, an insulating plate 7 installed on the inner wall of the housing 1, a conductive block 8 installed inside the insulating plate 7, a first spring 9 provided on the outer wall of one end of the conductive block 8, a stop block 10 installed on the surface of one end of the first spring 9, a first bearing 11 provided on the outer wall of the stop block 10, a rotating shaft 12 provided on the inner wall of the first bearing 11, a fan 13 installed on the outer wall of the rotating shaft 12, a rotating plate 5 provided on the outer wall of the rotating shaft 12, a grounding block 6 installed on the outer wall of the rotating plate 5, a second spring 14 installed on the outer wall of the insulating plate 7, and a grounding block 6 installed at one end of the second spring 14. The device has a second bearing 15, a carbon brush ring 16 on the inner wall of the outer casing 1, and a rotating ring 17 on the inner wall of the carbon brush ring 16. Through the scientific design of the above structure, the device can achieve multiple protections and linkage operation in actual use: when the grounding block 6 outside the device comes into contact with the ground in the working environment, it will immediately generate a directional driving force, which will drive the rotating plate 5 rigidly connected to it to rotate smoothly around the rotating shaft 12 fixed inside the outer casing 1 along a preset trajectory. As the rotating plate 5 rotates, the transmission tooth groove at its bottom will precisely mesh with the gear structure on the outside of the rotating shaft 12, thereby directly driving the rotating shaft 12 to rotate synchronously. A fan 13 is fixedly installed at the end of the rotating shaft 12 away from the rotating plate 5. Driven by the rotating shaft 12, the fan 13 will run at high speed, providing a power basis for subsequent functions such as carbon powder discharge.

[0018] At the same time, the longitudinal impact force generated by the grounding block 6 contacting the ground will cause the rotating plate 5 to slowly slide along the slide rail structure on the inner wall of the outer shell 1 towards the direction of the conductive block 8 while rotating around the rotating shaft 12. During this sliding process, the end of the rotating shaft 12 near the stop block 10 will push the stop block 10 synchronously, causing it to move along the guide rod inside the device towards the direction of the first spring 9. The first spring 9 is in a pre-compressed state and will further contract under the pressure of the stop block 10, absorbing most of the impact force through its own elastic deformation, thereby forming a flexible buffer for the stop block 10 and preventing the conductive block 8, which is indirectly connected to the stop block 10, from being deformed or broken due to excessive instantaneous force.

[0019] Furthermore, when the rotating plate 5 slides towards the conductive block 8, the protruding structure on its side will fit tightly with the annular groove of the carbon brush ring 16, and push the carbon brush ring 16 along the sliding groove on the surface of the insulating plate 7 to slowly move towards the second spring 14; one end of the second spring 14 is fixed to the inner wall of the device, and the other end is connected to the carbon brush ring 16. Under the squeezing action of the carbon brush ring 16, it will generate a reverse elastic force, which effectively weakens the squeezing force of the carbon brush ring 16 on the insulating plate 7, and plays a good buffering protection role for the insulating plate 7, preventing the insulating plate 7 from cracking or degrading its insulation performance due to overload, and comprehensively ensuring the operational stability and service life of the core components of the device.

[0020] Furthermore, an electrical cable groove 24 is provided on the inner wall of the insulating plate 7. The outer shell 1 is rotatably connected to the carbon brush ring 16. Through the setting of the electrical cable groove 24, the cable enters from the electrical cable groove 24 during use and is connected to the conductive block 8. The electrical cable groove 24 is provided in the insulating plate 7 to protect the device and prevent the current from damaging the device.

[0021] Furthermore, a dust discharge port 23 is provided on the surface of the rotating plate 5. The first bearing 11 is rotatably connected to the rotating shaft 12. With the setting of the dust discharge port 23, when in use, the rotating plate 5 rotates and drives the carbon brush ring 16 to rotate synchronously. Carbon powder is generated during rotation. Since the rotating shaft 12 rotates and drives the fan 13 to rotate synchronously, the fan 13 rotates and discharges the carbon powder from the dust discharge port 23.

[0022] Furthermore, a first slider 18 is provided on the outer wall of the second bearing 15. The first slider 18 is slidably connected to the outer shell 1. With the setting of the first slider 18, during use, the first slider 18 slides on the first slide groove 19 to buffer and protect the second bearing 15.

[0023] Furthermore, a protective sleeve 22 is installed on the inner wall of the outer casing 1. A second sliding groove 21 is provided on the inner wall of the protective sleeve 22. With the setting of the protective sleeve 22, the stop 10 slides inside the protective sleeve 22 during use, which buffers and protects the stop 10.

[0024] Furthermore, the stop block 10 is slidably connected to the protective sleeve 22, and a first sliding groove 19 is provided on the inner wall of the outer shell 1. In use, the first slider 18 slides on the first sliding groove 19 to buffer and protect the insulating plate 7.

[0025] Furthermore, a second slider 20 is provided on the outer wall of the first bearing 11. The second slider 20 is slidably connected to the second slide groove 21, and protects the stop block 10 and the conductive block 8 during use.

[0026] Working principle: In the assembly and operation process of the device, the external cable must first be accurately connected to the device through the cable groove 24 pre-set inside the insulating plate 7, so that the metal core of the cable and the conductive block 8 inside the device can achieve a stable electrical connection. The insulating plate 7 not only provides a dedicated installation channel for the cable by opening the cable groove 24, but also isolates the current conduction with its excellent insulation performance, effectively protecting the non-conductive parts inside the device, and fundamentally avoiding damage to the core structure of the device caused by leakage current or abnormal current.

[0027] When the grounding block 6 outside the device comes into contact with the ground in the working environment, it will immediately generate a mechanical force, causing the rotating plate 5 connected to it to rotate clockwise or counterclockwise around the rotating shaft 12 fixed on the outer shell 1 of the device. During this process, the rotation of the rotating plate 5 directly drives the rotating shaft 12 to rotate synchronously on the one hand, and drives the carbon brush ring 16 sleeved on the outside of the rotating shaft 12 to rotate at the same speed through the transmission structure. During the rotation and friction process, the carbon brush ring 16 will inevitably generate fine carbon powder. If the carbon powder accumulates, it will affect the stability of the device operation. At this time, the rotation of the rotating shaft 12 just drives the fan 13 installed at its end to operate synchronously. The rotation of the fan 13 generates directional airflow, which can efficiently blow the carbon powder from the dust outlet 23 opened at the bottom of the outer shell 1 to the outside of the device, ensuring that the internal components are clean and free of debris.

[0028] Meanwhile, the impact force generated by the grounding block 6 touching the ground will also cause the rotating plate 5 to slide horizontally along the inner wall of the device housing 1 towards the direction of the conductive block 8. During the sliding process, the rotating shaft 12 linked with the rotating plate 5 will simultaneously push the stop block 10 located at its end towards the first spring 9 preset in the device. The first spring 9 will undergo elastic deformation after being subjected to force, and absorb the impact force transmitted by the stop block 10 through its own buffering effect, thereby preventing the conductive block 8 indirectly connected to the stop block 10 from being seriously damaged due to excessive instantaneous force. In addition, when the rotating plate 5 slides, it will also push the carbon brush ring 16 through the transmission component on the side, and slide towards the second spring 14 preset in another location in the device. The second spring 14 will also generate a buffering effect through elastic deformation, effectively weakening the squeezing force of the carbon brush ring 16 on the insulating plate 7, further preventing the insulating plate 7 from being damaged due to overload, and ensuring the stable operation of the entire device.

[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 novel built-in bogie grounding device for urban rapid transit, comprising a housing (1), characterized in that: An end cap (2) is fixedly connected to the surface of the outer shell (1). A cable conduit (3) is opened on the surface of the outer shell (1). A screw (4) passes through the surface of the end cap (2). An insulating plate (7) is installed on the inner wall of the outer shell (1). A conductive block (8) is installed inside the insulating plate (7). A first spring (9) is provided on the outer wall of one end of the conductive block (8). A stop block (10) is installed on the surface of one end of the first spring (9). A first bearing (11) is provided on the outer wall of the stop block (10). A rotating shaft (12) is provided on the inner wall of a bearing (11), a fan (13) is installed on the outer wall of the rotating shaft (12), a rotating plate (5) is provided on the outer wall of the rotating shaft (12), a grounding block (6) is installed on the outer wall of the rotating plate (5), a second spring (14) is installed on the outer wall of the insulating plate (7), a second bearing (15) is installed at one end of the second spring (14), a carbon brush ring (16) is provided on the inner wall of the outer shell (1), and a rotating ring (17) is provided on the inner wall of the carbon brush ring (16).

2. A novel underframe grounding device for urban rapid transit according to claim 1, characterized in that: The inner wall of the insulating plate (7) is provided with an electric arc groove (24), and the outer shell (1) is rotatably connected to the carbon brush ring (16).

3. A new type of built-in bogie grounding device for urban express rails according to claim 1, characterized in that: The rotating plate (5) has a dust outlet (23) on its surface, and the first bearing (11) is rotatably connected to the rotating shaft (12).

4. A new type of built-in bogie grounding device for urban express rails according to claim 1, characterized in that: The second bearing (15) has a first slider (18) on its outer wall, and the first slider (18) is slidably connected to the outer shell (1).

5. A novel underframe grounding device for urban rapid transit according to claim 1, characterized in that: A protective sleeve (22) is installed on the inner wall of the outer shell (1), and a second groove (21) is provided on the inner wall of the protective sleeve (22).

6. A novel underframe grounding device for urban rapid transit according to claim 1, characterized in that: The stop block (10) is slidably connected to the protective sleeve (22), and a first groove (19) is provided on the inner wall of the outer shell (1).

7. A novel underframe grounding device for urban rapid transit according to claim 6, characterized in that: A second slider (20) is provided on the outer wall of the first bearing (11), and the second slider (20) is slidably connected to the second slide groove (21).

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