Novel hydrogen energy intercity motor train unit bogie grounding device

Abstract

The utility model discloses a novel hydrogen energy intercity motor train unit bogie grounding device belongs to grounding device technical field. This kind of novel hydrogen energy intercity motor train unit bogie grounding device, including carbon brush, the outer wall of carbon brush is equipped with constant force spring, the both sides of constant force spring are opened and have the bayonet, the carbon brush support frame is connected with carbon brush through the bayonet of constant force spring, the both sides screw thread connection of carbon brush support frame have first hexagonal head bolt, the carbon brush support frame is connected with grounding cover through first hexagonal head bolt, and the utility model discloses the cooperation of constant force spring, carbon brush support frame and grounding cover is used, makes this grounding device can reduce abrasion while being exempted from the influence of damp environment.

Description

Technical Field

[0001] This utility model relates to the field of grounding device technology, specifically a new type of grounding device for the bogie of hydrogen-powered intercity EMU. Background Technology

[0002] The main function of the grounding device is to connect the car body, axle, rails and earth to form a conductive circuit, release the working current, system fault current and lightning current on the car body, ensure the safety of the on-board personnel and electrical equipment, and at the same time provide simple, effective and economical protection for the bearings to prevent the bearings from eroding during train operation.

[0003] Currently, existing grounding devices are susceptible to the effects of humid external environments and suffer from significant wear and tear. Utility Model Content

[0004] To address the problems of existing grounding devices being prone to moisture and significant wear, this invention provides a novel grounding device for the bogies of hydrogen-powered intercity EMUs.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A new type of hydrogen-powered intercity EMU bogie grounding device includes a carbon brush. The outer wall of the carbon brush is provided with a constant force spring. The constant force spring has slots on both sides. The constant force spring is connected to a carbon brush support frame through the slots. The carbon brush support frame is threaded with first hexagonal head bolts on both sides. The carbon brush support frame is connected to a grounding cover through the first hexagonal head bolts.

[0007] Furthermore, the bottom surface of the grounding cover is connected to an "O" ring, and the top surface of the carbon brush support frame is provided with an annular groove that matches the "O" ring.

[0008] The beneficial effect of adopting the above-mentioned further solution is that the "O" ring on the bottom surface of the grounding cover matches the annular groove on the top surface of the carbon brush support frame, forming a sealed structure that effectively prevents dust, moisture and other impurities from entering the device and avoids the carbon brush from degrading its conductivity due to contamination.

[0009] Furthermore, an insulating seat is inserted between the carbon brush support frame and the grounding cover, and the first hexagonal head bolt is inserted inside the insulating seat.

[0010] The beneficial effects of adopting the above-mentioned further solution are that the insulating seat isolates the first hexagonal head bolt from the metal parts, preventing the bolt from conducting electricity and causing interference to the grounding circuit, ensuring the accuracy of the grounding path. At the same time, the insulating seat enhances the insulation performance of the structure, adapts to the high-voltage electrical environment of hydrogen-powered EMUs, and improves the safety of use.

[0011] Furthermore, a first locking washer is fitted on the outer wall of the first hexagonal head bolt, and the bottom end of the first locking washer contacts the top surface of the insulating seat.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the elastic deformation generates anti-loosening friction force, which prevents the bolts from loosening due to the vibration of the EMU operation, ensures the connection stability between the carbon brush support frame and the grounding cover, and avoids the grounding device from affecting the conductivity due to structural loosening.

[0013] Furthermore, the top surface of the grounding cover is threaded with a second hexagonal head bolt, and the outer wall of the second hexagonal head bolt is respectively fitted with a flat washer and an elastic locking washer, with the flat washer located at the bottom of the elastic locking washer.

[0014] The beneficial effects of adopting the above-mentioned further solutions are that the flat washer increases the force-bearing area to protect the surface of the grounding cover, and the elastic locking washer provides continuous elastic pressure to prevent the bolts from loosening, ensuring that the grounding cover and bogie are firmly installed and adapting to the high-frequency vibration conditions of the EMU.

[0015] Furthermore, the top surface of the grounding cover is threaded with a third hexagonal head bolt, and the grounding cover is connected to a cable clamp via the third hexagonal head bolt.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the cable clamp can fix the grounding cable, prevent the cable from falling off or being worn due to vibration, and ensure the integrity of the grounding circuit.

[0017] Furthermore, the middle position of the cable clamp is designed as a protrusion.

[0018] The beneficial effects of adopting the above-mentioned further solutions are that the raised design increases the contact pressure with the cable, improves the clamping stability, prevents the cable from shaking during the operation of the EMU, and the raised structure can adapt to changes in the outer diameter of the cable, enhancing the adaptability to cables of different specifications.

[0019] Furthermore, a second locking washer is fitted on the outer wall of the third hexagonal head bolt, and the bottom surface of the second locking washer contacts the top surface of the cable clamp.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the anti-loosening design prevents the bolts from loosening due to vibration, ensures the stability of the clamping force of the cable clamp on the cable, and avoids conductive faults caused by poor contact of the grounding cable.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This novel hydrogen-powered intercity EMU bogie grounding device, through the combined use of a constant force spring, a carbon brush support frame, and a grounding cover, enables the grounding device to be protected from the influence of a humid environment while reducing wear. The grounding cover protects the carbon brushes and constant force springs inside the carbon brush frame from water and foreign objects. The carbon brushes are conductive wear elements installed on the carbon brush frame. The carbon brush frame serves as a support for fixing the carbon brushes and constant force springs, providing both support and conductivity. The constant force springs are installed inside the carbon brush frame, and their elasticity acts on one end of the carbon brush, ensuring that the other end of the carbon brush is tightly pressed against the friction disc. Attached Figure Description

[0023] Figure 1 A front sectional view of the novel hydrogen-powered intercity EMU bogie grounding device provided by this utility model;

[0024] Figure 2 Side view of the novel hydrogen-powered intercity EMU bogie grounding device provided by this utility model;

[0025] Figure 3 A top view of the grounding device for the bogie of the novel hydrogen-powered intercity EMU provided by this utility model.

[0026] In the diagram: 1. Carbon brush; 2. Constant force spring; 3. Carbon brush support frame; 4. O-ring; 5. First hexagonal head bolt; 6. Insulating seat; 7. First locking washer; 8. Grounding cover; 9. Flat washer; 10. Elastic locking washer; 11. Second hexagonal head bolt; 12. Second locking washer; 13. Third hexagonal head bolt; 14. Cable clamp. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-3This utility model provides a technical solution: a novel grounding device for the bogie of a hydrogen-powered intercity EMU, including a carbon brush 1, a constant force spring 2 on the outer wall of the carbon brush 1, and slots on both sides of the constant force spring 2. The constant force spring 2 is connected to a carbon brush support frame 3 through the slots. The carbon brush support frame 3 is threaded with first hexagonal head bolts 5 on both sides. The carbon brush support frame 3 is connected to a grounding cover 8 through the first hexagonal head bolts 5. The grounding cover 8 is used to protect the carbon brush 1 and the constant force spring 2 inside the carbon brush frame 3 from water and foreign objects. The carbon brush 1 is a conductive wear element installed on the carbon brush frame 3. The carbon brush frame 3 serves as a support for fixing the carbon brush 1 and the constant force spring 2, and plays a supporting and conductive role. The constant force spring 2 is installed inside the carbon brush frame 3, and its elastic force acts on one end of the carbon brush 1, which can make the other end of the carbon brush 1 tightly fit against the friction disc.

[0029] 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.

[0030] As an embodiment of this utility model, the bottom surface of the grounding cover 8 is connected to an "O" ring 4, and the top surface of the carbon brush support frame 3 is provided with an annular groove that matches the "O" ring 4. The "O" ring 4 on the bottom surface of the grounding cover 8 matches the annular groove on the top surface of the carbon brush support frame 3 to form a sealing structure, which effectively prevents dust, moisture and other impurities from entering the device and avoids the carbon brush 1 from losing conductivity due to contamination.

[0031] As an embodiment of this utility model, an insulating seat 6 is further inserted between the carbon brush support frame 3 and the grounding cover 8. The first hexagonal head bolt 5 is inserted inside the insulating seat 6. The insulating seat 6 isolates the first hexagonal head bolt 5 from the metal parts to prevent the bolt from conducting electricity and causing interference to the grounding circuit, ensuring accurate grounding path. At the same time, the insulating seat enhances the insulation performance of the structure, adapts to the high-voltage electrical environment of hydrogen-powered EMU, and improves the safety of use.

[0032] As an embodiment of this utility model, the outer wall of the first hexagonal head bolt 5 is fitted with a first locking washer 7. The bottom end of the first locking washer 7 contacts the top surface of the insulating seat 6. Through elastic deformation, an anti-loosening friction force is generated to prevent the bolt from loosening due to the vibration of the train operation, ensuring the connection stability between the carbon brush support frame 3 and the grounding cover 8, and avoiding the grounding device from affecting the conductivity due to structural loosening.

[0033] As an embodiment of this utility model, the top surface of the grounding cover 8 is threaded with a second hexagonal head bolt 11. The outer wall of the second hexagonal head bolt 11 is respectively fitted with a flat washer 9 and an elastic locking washer 10. The flat washer 9 is located at the bottom of the elastic locking washer 10. The flat washer 9 increases the force-bearing area to protect the surface of the grounding cover. The elastic locking washer 10 provides continuous elastic pressure to prevent the bolt from loosening, ensuring that the grounding cover and the bogie are firmly installed and adapting to the high-frequency vibration conditions of the EMU.

[0034] As an embodiment of this utility model, the top surface of the grounding cover 8 is further threaded with a third hexagonal head bolt 13, and the grounding cover 8 is connected to a cable clamp 14 through the third hexagonal head bolt 13. The cable clamp 14 can fix the grounding cable to prevent the cable from falling off or being worn due to vibration, and ensure the integrity of the grounding circuit.

[0035] As an embodiment of this utility model, the middle position of the cable clamp 14 is further provided as a protrusion. The protrusion design increases the contact pressure with the cable, improves the clamping stability, and prevents the cable from shaking during the operation of the EMU. At the same time, the protrusion structure can adapt to changes in the outer diameter of the cable, enhancing the adaptability to cables of different specifications.

[0036] As an embodiment of this utility model, the outer wall of the third hexagonal head bolt 13 is fitted with a second locking washer 12. The bottom surface of the second locking washer 12 contacts the top surface of the cable clamp 14. The anti-loosening design prevents the bolt from loosening due to vibration, ensures that the clamping force of the cable clamp 14 on the cable is stable, and avoids conductive faults caused by poor contact of the grounding cable.

[0037] Specifically, the working principle of this new type of hydrogen-powered intercity EMU bogie grounding device is as follows: During use, the carbon brush 1 is installed on the carbon brush support frame 3 as a conductive wear element. The carbon brush support frame 3 is connected to the grounding cover 8 via a first hexagonal head bolt 5. The "O" ring 4 on the bottom surface of the grounding cover 8 is embedded in the annular groove on the top surface of the carbon brush support frame to form a seal, protecting the internal carbon brush and constant force spring 2 from water and external objects. The constant force spring 2 is fixed inside the carbon brush support frame via a bayonet, and its elasticity ensures that one end of the carbon brush fits tightly against the friction disc, guaranteeing continuous conductivity. The insulating seat 6 between the carbon brush support frame and the grounding cover isolates the first hexagonal head bolt 5 to prevent conductive interference, and the first locking washer 7 prevents the bolt from loosening. The second hexagonal head bolt 11 on the top surface of the grounding cover, together with the flat washer 9 and the elastic locking washer 10, is securely installed on the bogie. The third hexagonal head bolt 13, through the second locking washer 12, fixes the cable clamp 14 with a protrusion, ensuring stable clamping of the grounding cable. The bogie is reliably grounded through a combination of sealed protection, elastic conductivity, insulation isolation, and anti-loosening fixation.

Claims

1. A novel hydrogen energy intercity motor train unit bogie grounding device, characterized in that, Includes a carbon brush (1), the outer wall of the carbon brush (1) is provided with a constant force spring (2), the constant force spring (2) has a bayonet on both sides, the constant force spring (2) is connected to a carbon brush support frame (3) through the bayonet, the carbon brush support frame (3) is threaded with a first hexagonal head bolt (5) on both sides, and the carbon brush support frame (3) is connected to a grounding cover (8) through the first hexagonal head bolt (5).

2. The new hydrogen energy intercity EMU bogie grounding device according to claim 1, characterized in that, The bottom surface of the grounding cover (8) is connected to an "O" ring (4), and the top surface of the carbon brush support frame (3) is provided with an annular groove that matches the "O" ring (4).

3. The new hydrogen energy intercity EMU bogie grounding device according to claim 1, characterized in that, An insulating seat (6) is inserted between the carbon brush support frame (3) and the grounding cover (8), and the first hexagonal head bolt (5) is inserted inside the insulating seat (6).

4. The novel hydrogen-powered intercity EMU bogie grounding device according to claim 3, characterized in that, The outer wall of the first hexagonal head bolt (5) is fitted with a first locking washer (7), and the bottom end of the first locking washer (7) contacts the top surface of the insulating seat (6).

5. The novel hydrogen-powered intercity EMU bogie grounding device according to claim 1, characterized in that, The top surface of the grounding cover (8) is threaded with a second hexagonal head bolt (11). The outer wall of the second hexagonal head bolt (11) is respectively fitted with a flat washer (9) and an elastic locking washer (10). The flat washer (9) is located at the bottom of the elastic locking washer (10).

6. The novel hydrogen-powered intercity EMU bogie grounding device according to claim 1, characterized in that, The top surface of the grounding cover (8) is threaded with a third hexagonal head bolt (13), and the grounding cover (8) is connected to a cable clamp (14) via the third hexagonal head bolt (13).

7. The novel hydrogen-powered intercity EMU bogie grounding device according to claim 6, characterized in that, The middle position of the cable clamp (14) is set as a protrusion.

8. The novel hydrogen-powered intercity EMU bogie grounding device according to claim 7, characterized in that, The outer wall of the third hexagonal head bolt (13) is fitted with a second locking washer (12), and the bottom surface of the second locking washer (12) contacts the top surface of the cable clamp (14).

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