High-voltage cabinet wall bushing fixing structure

Abstract

The utility model discloses a kind of high-voltage cabinet wall bushings fixed structure, specifically related to wall bushing technical field, including inner sleeve, the inside of inner sleeve is equipped with limit round frame, the inside of inner sleeve is provided with copper bar fixed disc, copper bar fixed disc is rotatably connected with limit round frame, the inside of inner sleeve is installed with inner-embedded plate, the surface of inner-embedded plate is installed with outer cover plate, the inside of inner sleeve is installed with limit plate, the side of inner-embedded plate away from outer cover plate is rectangularly installed with connecting rod, the end of connecting rod away from inner-embedded plate is fixedly connected with limit plate, connecting rod is slidably connected with copper bar fixed disc, horizontal displacement mechanism is provided on outer cover plate and copper bar fixed disc, locking mechanism is provided on inner sleeve and limit plate. The utility model can release the locking of copper bar fixed disc by pulling outwards to handle, then rotating handle drives copper bar fixed disc to rotate together, loosens handle and automatically resets locking, to adjust copper bar angle to avoid bending wire, prolong life and improve safety.

Description

Technical Field

[0001] This utility model relates to the field of wall bushing technology, and more specifically, to a wall bushing fixing structure for a high-voltage switchgear. Background Technology

[0002] The fixing structure of the wall bushing of the high-voltage switchgear is a key link in its safe and reliable operation. It must not only withstand the mechanical load (gravity and electrodynamic force) of the conductor and the gravity of the insulator, but also ensure excellent sealing performance and electrical insulation performance, while maintaining accurate installation position.

[0003] Common wall bushing fixing structures for high-voltage switchgear can only fix copper busbars, but lack the function of adjusting the angle of the copper busbars. In actual use, the position of the copper busbars is fixed by the slots in the bushings. However, when the copper busbars are connected to external wires, the angle problem can cause the wires to bend or twist. Long-term operation can lead to electrical breakage, short circuits and other safety hazards, ultimately resulting in a decrease in safety.

[0004] In summary, for safety reasons, it is necessary to solve the problem that the fixing angle of the copper busbar cannot be adjusted according to the position of the external wires, so that the slots inside the bushing can be adjusted according to the position of the external wires, thereby adjusting the fixing angle of the copper busbar. Utility Model Content

[0005] The present invention provides a wall bushing fixing structure for high voltage switchgear, which aims to solve the problem of fixing copper busbars by slotting inside the bushing, but the wires are bent or twisted due to improper angle when connected, which can easily lead to breakage or short circuit over time.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wall bushing fixing structure for a high-voltage switchgear, comprising an inner bushing, a limiting circular frame installed inside the inner bushing, a copper busbar fixing plate disposed inside the inner bushing, the copper busbar fixing plate being rotatably connected to the limiting circular frame, an inner plate installed inside the inner bushing, an outer cover plate installed on the surface of the inner plate, a limiting plate installed inside the inner bushing, a connecting rod rectangularly mounted on the side of the inner plate away from the outer cover plate, the end of the connecting rod away from the inner plate being fixedly connected to the limiting plate, the connecting rod being slidably connected to the copper busbar fixing plate, a horizontal displacement mechanism provided on the outer cover plate and the copper busbar fixing plate, and a locking mechanism provided on the inner bushing and the limiting plate.

[0007] In a preferred embodiment, the horizontal displacement mechanism is used to synchronously control the horizontal displacement of the inner plate and the limiting plate. The horizontal displacement mechanism includes a pull-out assembly and a reset assembly. The connecting end of the pull-out assembly is connected to the outer cover plate and is used to release the locking of the angle of the limiting plate. The connecting end of the reset assembly is connected to the limiting plate and is used to push the limiting plate to reset.

[0008] In a preferred embodiment, the pull-out assembly includes two handles mounted on the surface of the outer cover plate and a limiting ring mounted inside the inner sleeve, with the connecting rod slidably connected to the limiting ring.

[0009] In a preferred embodiment, the reset assembly includes a reset spring that is rectangularly mounted on the surface of the copper busbar fixing plate, with one end of the reset spring away from the copper busbar fixing plate connected to a limiting plate.

[0010] In a preferred embodiment, the locking mechanism is used to lock the angle of the copper busbar fixing plate. The locking mechanism includes a multi-plug assembly and a multi-slot assembly. The engaging end of the multi-plug assembly is connected to the multi-slot assembly. The multi-plug assembly is used to adapt to the multi-angle rotation of the limiting plate, and the multi-slot assembly is used to limit the position of the multi-plug assembly.

[0011] In a preferred embodiment, the multi-block assembly includes a plurality of limiting blocks circumferentially mounted on the surface of the limiting plate and a locking ring mounted inside the inner sleeve.

[0012] In a preferred embodiment, the multi-slot assembly includes a plurality of limiting slots circumferentially opened on the surface of the locking ring, with limiting blocks inserted into the interior of the limiting slots.

[0013] In a preferred embodiment, a first copper busbar fixing groove is formed on the surface of the copper busbar fixing plate, a second copper busbar fixing groove is formed on the surface of the outer cover plate, a third copper busbar fixing groove is formed on the surface of the limiting plate, a fixing flange is installed on the outer side of the inner sleeve, and two outer ceramic tubes are installed on the outer side of the inner sleeve.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention allows the copper busbar fixing plate to be released by pulling the handle outward. Then, rotating the handle will rotate the copper busbar fixing plate inside. After adjusting the angle, releasing the handle will cause the spring to automatically push the entire device back to its original position and lock it. In this way, the copper busbar and the wire can be smoothly connected when connecting the wire, without having to bend or break the wire, thus extending the life of the equipment and improving safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0018] Figure 3 This is an overall exploded view of the present invention.

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the inner sleeve of this utility model.

[0020] Figure 5 This is a schematic diagram of the angle adjustment component of this utility model.

[0021] The attached figures are labeled as follows: 1. Inner sleeve; 11. Limiting circular frame; 12. Copper busbar fixing plate; 13. First copper busbar fixing groove; 14. Inner plate; 15. Outer cover plate; 16. Second copper busbar fixing groove; 17. Limiting plate; 18. Third copper busbar fixing groove; 19. Connecting rod; 20. Fixing flange; 21. Outer ceramic tube; 311. Handle; 312. Limiting ring; 321. Return spring; 411. Limiting insert; 412. Locking ring; 421. Limiting slot. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0023] Refer to the instruction manual appendix Figures 1 to 5 A wall bushing fixing structure for a high-voltage switchgear includes an inner bushing 1, a limiting circular frame 11 installed inside the inner bushing 1, a copper busbar fixing plate 12 disposed inside the inner bushing 1, the copper busbar fixing plate 12 being rotatably connected to the limiting circular frame 11, an inner plate 14 installed inside the inner bushing 1, an outer cover plate 15 installed on the surface of the inner plate 14, a limiting plate 17 installed inside the inner bushing 1, a connecting rod 19 rectangularly mounted on the side of the inner plate 14 away from the outer cover plate 15, the end of the connecting rod 19 away from the inner plate 14 being fixedly connected to the limiting plate 17, the connecting rod 19 being slidably connected to the copper busbar fixing plate 12, a horizontal displacement mechanism being provided on the outer cover plate 15 and the copper busbar fixing plate 12, and a locking mechanism being provided on the inner bushing 1 and the limiting plate 17.

[0024] It should be noted that the inner sleeve 1 constitutes the core support structure, and the limiting circular frame 11 is fixed to the inner wall of the inner sleeve 1 to provide rotational support for the copper busbar fixing plate 12. The copper busbar fixing plate 12 can rotate on the limiting circular frame 11 and is the core component for realizing the adjustment of the copper busbar angle. The inner plate 14 and the outer cover plate 15 together constitute the outer end cover of the sleeve. The limiting plate 17 is located inside, and its position determines the locking state. The connecting rod 19 rigidly connects the inner plate 14, the outer cover plate 15 and the limiting plate 17 to ensure that they move synchronously when moving horizontally. The horizontal displacement mechanism is used to control the horizontal movement of the inner plate 14, the outer cover plate 15 and the limiting plate 17. The locking mechanism is used to fix the copper busbar fixing plate 12 at the selected angle.

[0025] It is worth noting that the connecting rod 19 passes through the copper busbar fixing plate 12 and is slidably connected to it. When the outer cover plate 15 is rotated by the handle 311, the outer cover plate 15 drives the connecting rod 19 to rotate synchronously through the inner plate 14. This allows the copper busbar fixing plate 12 to rotate freely with the connecting rod 19 in the unlocked state, and the connecting rod 19 drives the limiting plate 17 to rotate synchronously.

[0026] Refer to the instruction manual appendix Figures 1 to 5 The horizontal displacement mechanism is used to synchronously control the horizontal displacement of the inner plate 14 and the limiting plate 17. The horizontal displacement mechanism includes a pull-out assembly and a reset assembly. The connecting end of the pull-out assembly is connected to the outer cover plate 15. The pull-out assembly is used to release the locking of the angle of the limiting plate 17. The connecting end of the reset assembly is connected to the limiting plate 17. The reset assembly is used to push the limiting plate 17 to reset.

[0027] It should be noted that the core function of the horizontal displacement mechanism is to achieve unlocking and resetting actions. The pull-out component acts on the outer cover plate 15. When pulled, it will drive the inner plate 14, the connecting rod 19 and the limiting plate 17 to move outward together, thereby releasing the locking mechanism from the angle of the copper busbar fixing plate 12. The resetting component acts on the limiting plate 17. When the pull-out force is released, it can push the limiting plate 17 and its connected components to move inward back to the original position, so that the locking mechanism re-engages.

[0028] Refer to the instruction manual appendix Figure 5 The pull-out assembly includes two handles 311 mounted on the surface of the outer cover plate 15 and a limiting ring 312 mounted inside the inner sleeve 1. The connecting rod 19 is slidably connected to the limiting ring 312.

[0029] It should be noted that the handle 311 is installed on the outside of the outer cover plate 15 to provide a force point for pulling operation. The limiting ring 312 is fixed to the inner wall of the inner sleeve 1, and its inner hole is slidably engaged with the connecting rod 19. The limiting ring 312 mainly plays a guiding role to ensure that the connecting rod 19 maintains linear movement during horizontal movement and does not deviate or jam, while limiting its range of movement.

[0030] Refer to the instruction manual appendix Figure 5 The reset assembly includes a reset spring 321 that is rectangularly mounted on the surface of the copper busbar fixing plate 12. The end of the reset spring 321 away from the copper busbar fixing plate 12 is connected to the limiting plate 17.

[0031] It should be noted that one end of the return spring 321 is fixed to the surface of the copper busbar fixing plate 12, and the other end is fixed to the limiting plate 17. When the outer cover plate 15 assembly is pulled outward by the handle 311, the connecting rod 19 drives the limiting plate 17 to move outward against the elastic force of the return spring 321. After releasing the handle 311, the elastic restoring force of the return spring 321 pushes the limiting plate 17 inward, thereby driving the entire outer cover plate 15 assembly to reset inward, so that the locking mechanism re-engages.

[0032] Refer to the instruction manual appendix Figures 4 to 5 The locking mechanism is used to lock the angle of the copper busbar fixing plate 12. The locking mechanism includes a multi-plug assembly and a multi-slot assembly. The engaging end of the multi-plug assembly is connected to the multi-slot assembly. The multi-plug assembly is used to adapt to the multi-angle rotation of the limiting plate 17, and the multi-slot assembly is used to limit the position of the multi-plug assembly.

[0033] It should be noted that the core of the locking mechanism is the engagement of the insert and the slot. The multi-insert assembly is installed on a component that can move with the limit plate 17, and the multi-slot assembly is fixed inside the inner sleeve 1. When the limit plate 17 is in a non-pull-out state under the action of the return spring 321, the insert is inserted into the slot, preventing the copper busbar fixing plate 12 from rotating. When the angle needs to be adjusted, the pull action causes the insert to disengage from the slot, and the copper busbar fixing plate 12 can rotate freely. The multiple sets of inserts and slots are distributed along the circumference, providing multiple discrete locking angle positions.

[0034] It is worth noting that this plug and slot structure provides a reliable, stable and torque-resistant mechanical locking method, effectively preventing the copper busbar fixing plate 12 from rotating unexpectedly due to vibration or electrodynamics during operation. The number of slots distributed around the circumference determines the accuracy of angle adjustment.

[0035] Refer to the instruction manual appendix Figure 5 The multi-block assembly includes multiple limiting blocks 411 circumferentially mounted on the surface of the limiting plate 17 and a locking ring 412 installed inside the inner sleeve 1.

[0036] It should be noted that the limiting blocks 411 are fixed in a circular array on the surface of the limiting plate 17, while the locking ring 412 is fixedly installed on the inner wall of the inner sleeve 1. When the limiting plate 17 is reset to the locked position, the limiting blocks 411 on it are inserted into the limiting slots 421 on the locking ring 412.

[0037] Refer to the instruction manual appendix Figure 4 The multi-slot assembly includes a plurality of limiting slots 421 circumferentially formed on the surface of the locking ring 412, and a limiting block 411 is inserted into the interior of the limiting slot 421.

[0038] It should be noted that the limiting slots 421 are arranged in a circular array on the surface of the locking ring 412. The shape and size of each limiting slot 421 match the limiting plug 411. When the limiting plate 17 moves inward under the action of the reset spring 321, the limiting plug 411 will be precisely inserted into the corresponding limiting slot 421, forming a mechanical interlock and preventing the copper busbar fixing plate 12 from rotating.

[0039] Refer to the instruction manual appendix Figure 2The surface of the copper busbar fixing plate 12 is provided with a first copper busbar fixing groove 13, the surface of the outer cover plate 15 is provided with a second copper busbar fixing groove 16, the surface of the limiting plate 17 is provided with a third copper busbar fixing groove 18, a fixing flange 20 is installed on the outside of the inner sleeve 1, and two outer ceramic tubes 21 are installed on the outside of the inner sleeve 1.

[0040] It should be noted that the first copper busbar fixing groove 13, the second copper busbar fixing groove 16, and the third copper busbar fixing groove 18 are respectively opened on the copper busbar fixing plate 12, the outer cover plate 15, and the limiting plate 17. When all components are assembled in place, these three grooves are aligned axially and together form the copper busbar installation channel through the bushing. The fixing flange 20 is used to fix the entire through-wall bushing structure to the cabinet or partition of the high-voltage switchgear and to provide a sealing surface. The two outer ceramic tubes 21 are installed on the outside of the inner bushing 1 as the main insulator, providing the necessary electrical insulation strength and creepage distance.

[0041] Working principle: When it is necessary to adjust the fixed angle of the copper busbar inside the through-wall sleeve, grasp and pull the two handles 311 installed on the surface of the outer cover plate 15. This pulling action causes the outer cover plate 15, the inner plate 14 connected to it, and the connecting rod 19 fixed on the inner plate 14 to move outward horizontally in sync. Since the connecting rod 19 is fixedly connected to the limiting plate 17, the limiting plate 17 also moves outward. The outward movement of the limiting plate 17 causes the multiple limiting inserts 411 distributed circumferentially on its surface to disengage from the corresponding limiting slots 421 on the locking ring 412 fixed inside the inner sleeve 1, thereby releasing the limiting... The positioning plate 17 and the outer cover plate 15 and inner insert plate 14 rigidly connected thereto via the connecting rod 19 are rotated and locked. Simultaneously, the connecting rod 19 slides within the limiting ring 312 during the pulling process, acting as a guide. Meanwhile, the return spring 321 is compressed and stores energy. At this time, because the copper busbar fixing plate 12 is rotatably connected to the inner sleeve 1 via the limiting circular frame 11, and the connecting rod 19 is only slidably connected to the copper busbar fixing plate 12, the operator can rotate the handle 311, causing the outer cover plate 15, inner insert plate 14, connecting rod 19, and limiting plate 17 to rotate as a whole around the axis of the sleeve. This rotation... The connecting rod 19 slides through the copper busbar fixing plate 12, causing the copper busbar fixing plate 12 to rotate synchronously, thereby changing the circumferential angle position of the first copper busbar fixing groove 13 on its surface. When the copper busbar fixing plate 12 rotates to the required angle, the handle 311 is released. At this time, the compressed return spring 321 releases its elastic force, pushing the limiting plate 17 to move inward horizontally. The limiting plate 17 drives the inner plate 14 and the outer cover plate 15 to move inward synchronously through the connecting rod 19. Finally, the limiting block 411 on the limiting plate 17 is re-inserted into the corresponding limiting slot 421 on the locking ring 412, thus... The limiting plate 17, connecting rod 19, inner plate 14, outer cover plate 15, and copper busbar fixing plate 12 are firmly locked at the selected new angle position to prevent them from rotating during subsequent operation. Throughout the adjustment process and after completion, the first copper busbar fixing groove 13 on the copper busbar fixing plate 12, the second copper busbar fixing groove 16 on the outer cover plate 15, and the third copper busbar fixing groove 18 on the limiting plate 17 are always axially aligned, forming a continuous channel to fix the through copper busbar. The fixing flange 20 is used to install and fix the entire structure on the cabinet of the high voltage switchgear, and the two outer ceramic tubes 21 provide the necessary electrical insulation.

[0042] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A wall bushing fixing structure for a high-voltage switchgear, characterized in that: The device includes an inner sleeve (1), a limiting circular frame (11) installed inside the inner sleeve (1), a copper busbar fixing plate (12) installed inside the inner sleeve (1), the copper busbar fixing plate (12) being rotatably connected to the limiting circular frame (11), an inner plate (14) installed inside the inner sleeve (1), an outer cover plate (15) installed on the surface of the inner plate (14), a limiting plate (17) installed inside the inner sleeve (1), a connecting rod (19) installed in a rectangle on the side of the inner plate (14) away from the outer cover plate (15), the end of the connecting rod (19) away from the inner plate (14) being fixedly connected to the limiting plate (17), the connecting rod (19) being slidably connected to the copper busbar fixing plate (12), a horizontal displacement mechanism being provided on the outer cover plate (15) and the copper busbar fixing plate (12), and a locking mechanism being provided on the inner sleeve (1) and the limiting plate (17).

2. The high-voltage switchgear through-wall bushing fixing structure according to claim 1, characterized in that: The horizontal displacement mechanism is used to synchronously control the horizontal displacement of the inner plate (14) and the limiting plate (17). The horizontal displacement mechanism includes a pull-out assembly and a reset assembly. The connecting end of the pull-out assembly is connected to the outer cover plate (15). The pull-out assembly is used to release the locking of the angle of the limiting plate (17). The connecting end of the reset assembly is connected to the limiting plate (17). The reset assembly is used to push the limiting plate (17) to reset.

3. The wall bushing fixing structure for a high-voltage switchgear according to claim 2, characterized in that: The pull-out assembly includes two handles (311) mounted on the surface of the outer cover plate (15) and a limiting ring (312) mounted inside the inner sleeve (1), with the connecting rod (19) slidably connected to the limiting ring (312).

4. The wall bushing fixing structure for a high-voltage switchgear according to claim 3, characterized in that: The reset assembly includes a reset spring (321) mounted in a rectangular shape on the surface of the copper busbar fixing plate (12), with one end of the reset spring (321) away from the copper busbar fixing plate (12) connected to the limiting plate (17).

5. The wall bushing fixing structure for a high-voltage switchgear according to claim 1, characterized in that: The locking mechanism is used to lock the angle of the copper busbar fixing plate (12). The locking mechanism includes a multi-plug assembly and a multi-slot assembly. The engaging end of the multi-plug assembly is connected to the multi-slot assembly. The multi-plug assembly is used to adapt to the multi-angle rotation of the limiting plate (17). The multi-slot assembly is used to limit the position of the multi-plug assembly.

6. The wall bushing fixing structure for a high-voltage switchgear according to claim 5, characterized in that: The multi-block assembly includes multiple limiting blocks (411) circumferentially mounted on the surface of the limiting plate (17) and a locking ring (412) mounted inside the inner sleeve (1).

7. The wall bushing fixing structure for a high-voltage switchgear according to claim 6, characterized in that: The multi-slot assembly includes a plurality of limiting slots (421) circumferentially opened on the surface of the locking ring (412), and limiting blocks (411) are inserted into the interior of the limiting slots (421).

8. The wall bushing fixing structure for a high-voltage switchgear according to claim 1, characterized in that: The surface of the copper busbar fixing plate (12) is provided with a first copper busbar fixing groove (13), the surface of the outer cover plate (15) is provided with a second copper busbar fixing groove (16), the surface of the limiting plate (17) is provided with a third copper busbar fixing groove (18), a fixing flange (20) is installed on the outside of the inner sleeve (1), and two outer ceramic tubes (21) are installed on the outside of the inner sleeve (1).

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