A butterfly type two-way locking device of a pressure equalizing ball assembly

Abstract

The utility model discloses a butterfly two -way locking device of equalizing ball subassembly, include: connecting structure, the outer wall sliding connection of connecting structure has equalizing ball and insulating sleeve, and equalizing ball sets at the top of insulating sleeve, the utility model relates to equalizing ball subassembly locking technical field, this connecting structure, through the cooperation of screw rod and nut, can realize two -way locking to equalizing ball and insulating sleeve, through the intercoordination of inclined block and ratchet ring, when equalizing ball or insulating sleeve happens circumferential rotation tendency, the inclined plane of inclined block and the tooth surface of ratchet ring are mutually clamped, effectively prevent rotating, simultaneously hexagonal limiting plate restricts the rotation of nut, realizes double -screwed, ensures equalizing ball subassembly always keeps stable connection in the operation process, when needing to disassemble equalizing ball and insulating sleeve, only need to press the pressure bar in the inside, can make inclined block separate ratchet ring tooth groove, and quick release rotation locking.

Description

Technical Field

[0001] This utility model relates to the field of locking technology for equalizing ball assemblies, specifically a butterfly-shaped bidirectional locking device for equalizing ball assemblies. Background Technology

[0002] In power systems, equalizing ball assemblies are often used to improve the electric field distribution of high-voltage electrical equipment. Their reliable connection with components such as insulating bushings directly affects the operational safety and stability of the equipment.

[0003] Traditional equalizing ball assembly connection devices mostly use a single threaded connection, which has revealed some shortcomings in actual use. During long-term operation of the equipment, the threads are prone to loosening due to factors such as vibration and temperature changes, causing the equalizing ball assembly to shift, disrupting the uniformity of the electric field distribution, and increasing the risk of equipment failure. Although some connection devices using snap-fit ​​structures simplify the installation process to some extent, the anti-loosening performance of the snap-fit ​​is limited and it is difficult to withstand the dynamic load of high-voltage equipment during operation. When the equalizing ball assembly undergoes circumferential torsion, the snap-fit ​​is prone to failure, resulting in a significant decrease in connection stability. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a butterfly-shaped bidirectional locking device for equalizing ball assemblies. This solves the problem that traditional equalizing ball assembly connection devices often use a single thread connection, which is prone to loosening and displacement of the equalizing ball assembly due to factors such as vibration and temperature changes during long-term operation of the equipment.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A butterfly-shaped bidirectional locking device for an equalizing ball assembly includes: a connecting structure, wherein an equalizing ball and an insulating sleeve are slidably connected to the outer wall of the connecting structure, and the equalizing ball is positioned above the insulating sleeve; the connecting structure includes a connecting block, a threaded rod is symmetrically fixedly connected to the outer wall of the connecting block, a nut is threadedly connected to the outer wall of the threaded rod, a sliding groove is symmetrically formed on the inner wall of the connecting block, a sliding rod is fixedly connected to the inner wall of the sliding groove, a sliding plate is slidably connected to the outer wall of the sliding rod, a compression spring is fixedly connected to the outer wall of the sliding plate, and a pressure rod and a wedge block are fixedly connected to the outer wall of the sliding plate on the side away from the compression spring.

[0009] Preferably, the outer wall of the slide plate is slidably connected to the inner wall of the slide groove, and the outer walls of the inclined block and the pressure rod are slidably connected to the inner wall of the connecting block. When the pressure rod is pressed inward, the pressure rod will drive the slide plate to slide inward along the slide rod, compressing the spring to store force, and at the same time the inclined block will also retract inward.

[0010] Preferably, ratchet rings are fixedly connected to the outer wall of the bottom of the equalizing ball and the outer wall of the top of the insulating sleeve, and hexagonal limiting plates are fixedly connected to the outer wall of the top of the equalizing ball and the outer wall of the bottom of the insulating sleeve.

[0011] Preferably, the inner walls of the equalizing ball and the insulating sleeve are slidably connected to the outer wall of the threaded rod, the outer wall of the top of the connecting block is in contact with the outer wall of the top of the equalizing ball, the outer wall of the bottom of the connecting block is in contact with the outer wall of the top of the insulating sleeve, and the threaded rod passes through both the equalizing ball and the insulating sleeve, which can slide up and down along the threaded rod.

[0012] Preferably, the outer wall of the nut is slidably connected to the inner wall of the hexagonal limiting plate, and the nut is slidably locked into the inner wall of the hexagonal limiting plate. Then, the equalizing ball and the insulating sleeve are rotated, and the nut rotates under the limitation of the hexagonal limiting plate, causing it to move along the threaded rod towards the connecting block. At the same time, the equalizing ball and the insulating sleeve are squeezed to move along the threaded rod towards the connecting block. The outer wall of the inclined locking block is slidably connected to the inner wall of the ratchet ring. The protruding inclined locking block is embedded in the ratchet ring tooth groove at the bottom of the equalizing ball and the top of the insulating sleeve. If the equalizing ball or the insulating sleeve rotates circumferentially, the inclined surface of the inclined locking block and the tooth surface of the ratchet ring are locked together to prevent rotation.

[0013] (III) Beneficial Effects

[0014] This invention provides a butterfly-shaped bidirectional locking device for a pressure equalization ball assembly. It has the following advantages:

[0015] (I) This connection structure, through the cooperation of the threaded rod and the nut, can achieve bidirectional locking of the equalizing ball and the insulating sleeve. When in use, simply slide the nut into the hexagonal limiting plate, rotate the equalizing ball and the insulating sleeve to drive the nut to move along the threaded rod, and complete the installation and fastening of the two. The operation is simple and convenient.

[0016] (II) This connecting block, through the cooperation of the inclined locking block and the ratchet ring, when the equalizing ball or the insulating sleeve tends to rotate circumferentially, the inclined surface of the inclined locking block and the tooth surface of the ratchet ring interlock, effectively preventing rotation. At the same time, the hexagonal limiting plate restricts the rotation of the nut, achieving double anti-loosening and ensuring that the equalizing ball assembly always maintains a stable connection during operation. When it is necessary to disassemble the equalizing ball and the insulating sleeve, simply press the pressure rod inward to disengage the inclined locking block from the ratchet ring tooth groove, quickly releasing the rotation lock. After unlocking, by rotating the equalizing ball and the insulating sleeve to drive the nut to rotate, the two can be easily disassembled from the connecting structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the structure at point A;

[0019] Figure 3 This is a schematic diagram of the connection structure of this utility model;

[0020] Figure 4 This utility model Figure 3 A schematic diagram of the structure at point B;

[0021] Figure 5 This is a schematic diagram of the structure of the hexagonal limiting plate of this utility model;

[0022] Figure 6 This is a schematic diagram of the ratchet toothed ring of this utility model.

[0023] In the diagram: 1. Connecting structure; 11. Connecting block; 12. Threaded rod; 13. Nut; 14. Slide groove; 15. Slide rod; 16. Slide plate; 17. Compression spring; 18. Pressure rod; 19. Angled locking block; 2. Equalizing ball; 21. Ratchet ring; 22. Hexagonal limiting plate; 3. Insulating sleeve. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-6 This utility model provides a technical solution: a butterfly-shaped bidirectional locking device for a pressure equalizing ball assembly, comprising: a connecting structure 1, wherein a pressure equalizing ball 2 and an insulating sleeve 3 are slidably connected to the outer wall of the connecting structure 1, and the pressure equalizing ball 2 is disposed above the insulating sleeve 3; the connecting structure 1 includes a connecting block 11, wherein a threaded rod 12 is symmetrically fixedly connected to the outer wall of the connecting block 11, a nut 13 is threadedly connected to the outer wall of the threaded rod 12, and a sliding groove 14 is symmetrically opened on the inner wall of the connecting block 11, wherein a sliding rod 15 is fixedly connected to the inner wall of the sliding groove 14, a sliding plate 16 is slidably connected to the outer wall of the sliding rod 15, a compression spring 17 is fixedly connected to the outer wall of the sliding plate 16, and a pressure rod 18 and a slanted locking block 19 are fixedly connected to the outer wall of the sliding plate 16 on the side away from the compression spring 17.

[0026] The outer wall of the slide plate 16 is slidably connected to the inner wall of the slide groove 14, and the outer walls of the inclined block 19 and the pressure rod 18 are slidably connected to the inner wall of the connecting block 11. When the pressure rod 18 is pressed inward, the pressure rod 18 will drive the slide plate 16 to slide inward along the slide rod 15, compressing the spring 17 to store force, and at the same time the inclined block 19 will also retract inward.

[0027] A ratchet ring 21 is fixedly connected to the outer wall of the bottom of the equalizing ball 2 and the outer wall of the top of the insulating sleeve 3. A hexagonal limiting plate 22 is fixedly connected to the outer wall of the top of the equalizing ball 2 and the outer wall of the bottom of the insulating sleeve 3.

[0028] The inner walls of the equalizing ball 2 and the insulating sleeve 3 are slidably connected to the outer wall of the threaded rod 12. The outer wall of the top of the connecting block 11 is in contact with the outer wall of the top of the equalizing ball 2, and the outer wall of the bottom of the connecting block 11 is in contact with the outer wall of the top of the insulating sleeve 3. The threaded rod 12 passes through both the equalizing ball 2 and the insulating sleeve 3, and the two can slide up and down along the threaded rod 12.

[0029] The outer wall of nut 13 is slidably connected to the inner wall of hexagonal limiting plate 22. Nut 13 is slidably inserted into the inner wall of hexagonal limiting plate 22. Then, the equalizing ball 2 and insulating sleeve 3 are rotated. Nut 13 rotates under the limitation of hexagonal limiting plate 22, causing it to move along threaded rod 12 toward connecting block 11. At the same time, it squeezes equalizing ball 2 and insulating sleeve 3 to move along threaded rod 12 toward connecting block 11. The outer wall of inclined locking block 19 is slidably connected to the inner wall of ratchet ring 21. The protruding inclined locking block 19 is embedded in the tooth groove of ratchet ring 21 at the bottom of equalizing ball 2 and the top of insulating sleeve 3. If equalizing ball 2 or insulating sleeve 3 rotates circumferentially, the inclined surface of inclined locking block 19 and the tooth surface of ratchet ring 21 are locked together to prevent rotation.

[0030] In use, the connecting structure 1 serves as the basic frame, and its outer wall passes through the equalizing ball 2 and the insulating sleeve 3 simultaneously via the threaded rod 12. The two can slide up and down along the threaded rod 12 and lock the equalizing ball 2 and the insulating sleeve 3 in both directions.

[0031] First, slide the nut 13 into the hexagonal limiting plate 22 on the equalizing ball 2 and the insulating sleeve 3 respectively. Then rotate the equalizing ball 2 and the insulating sleeve 3. The nut 13 rotates under the limitation of the hexagonal limiting plate 22, so that it moves along the threaded rod 12 towards the connecting block 11. At the same time, it squeezes the equalizing ball 2 and the insulating sleeve 3 to move along the threaded rod 12 towards the connecting block 11.

[0032] Under normal conditions, the compression spring 17 pushes the slide plate 16 outward along the slide groove 14, causing the inclined block 19 to extend radially. When the ratchet ring 21 on the equalizing ball 2 and the insulating sleeve 3 moves towards the connecting block 11, it will contact the extended inclined block 19. Through the interaction between the inclined block 19 and the tooth groove of the ratchet ring 21, the inclined block 19 is squeezed inward and pushes the slide plate 16 to squeeze the compression spring 17. At the same time, the reaction force of the compression spring 17 pushes the slide plate 16 to keep the inclined block 19 always in contact with the inner wall of the ratchet ring 21. When the outer wall of the top of the connecting block 11 is in contact with the top of the equalizing ball 2... When the outer wall of the part and the outer wall of the bottom of the connecting block 11 come into contact with the outer wall of the top of the insulating sleeve 3, the nut 13 clamps the equalizing ball 2 and the insulating sleeve 3 by the axial tension of the threaded rod 12. At the same time, the extended inclined locking block 19 is also embedded in the tooth groove of the ratchet ring 21 at the bottom of the equalizing ball 2 and the top of the insulating sleeve 3. If the equalizing ball 2 or the insulating sleeve 3 rotates circumferentially, the inclined surface of the inclined locking block 19 and the tooth surface of the ratchet ring 21 are locked together to prevent rotation. At the same time, the hexagonal limiting plate 22 on the equalizing ball 2 and the insulating sleeve 3 also restricts the nut 13 to ensure that the nut 13 will not rotate or loosen.

[0033] When it is necessary to disassemble the equalizing ball 2 and the insulating sleeve 3, press the pressure rod 18 inward. The pressure rod 18 drives the slide plate 16 to slide inward along the slide rod 15, compressing the spring 17 to store force. At the same time, the inclined locking block 19 disengages from the tooth groove of the ratchet ring 21, releasing the rotation lock on the equalizing ball 2 and the insulating sleeve 3. After unlocking, the equalizing ball 2 and the insulating sleeve 3 can be rotated. The hexagonal limiting plate 22 drives the nut 13 to rotate, causing the equalizing ball 2 and the insulating sleeve 3 to move outward along the threaded rod 12, so that the equalizing ball 2 and the insulating sleeve 3 can be disassembled from the connecting structure 1.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] 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 butterfly double-acting locking device of a pressure equalizing ball assembly, characterized in that, include: A connecting structure (1) is provided, wherein a pressure equalizing ball (2) and an insulating sleeve (3) are slidably connected to the outer wall of the connecting structure (1), and the pressure equalizing ball (2) is disposed above the insulating sleeve (3); The connection structure (1) includes a connecting block (11). A threaded rod (12) is symmetrically fixedly connected to the outer wall of the connecting block (11). A nut (13) is threadedly connected to the outer wall of the threaded rod (12). A sliding groove (14) is symmetrically opened on the inner wall of the connecting block (11). A sliding rod (15) is fixedly connected to the inner wall of the sliding groove (14). A sliding plate (16) is slidably connected to the outer wall of the sliding rod (15). A compression spring (17) is fixedly connected to the outer wall of the sliding plate (16). A pressure rod (18) and a slanted locking block (19) are fixedly connected to the outer wall of the sliding plate (16) on the side away from the compression spring (17).

2. The butterfly double-acting locking device of the equalizing ball assembly according to claim 1, characterized in that: The outer wall of the slide plate (16) is slidably connected to the inner wall of the slide groove (14), and the outer walls of the inclined block (19) and the pressure rod (18) are slidably connected to the inner wall of the connecting block (11).

3. The butterfly double-acting locking device of the equalizing ball assembly according to claim 1, characterized in that: The outer wall of the bottom of the equalizing ball (2) and the outer wall of the top of the insulating sleeve (3) are both fixedly connected with ratchet rings (21), and the outer wall of the top of the equalizing ball (2) and the outer wall of the bottom of the insulating sleeve (3) are both fixedly connected with hexagonal limiting plates (22).

4. The butterfly double-acting locking device of the equalizing ball assembly according to claim 3, characterized in that: The inner walls of the equalizing ball (2) and the insulating sleeve (3) are slidably connected to the outer wall of the threaded rod (12), the outer wall of the top of the connecting block (11) is in contact with the outer wall of the top of the equalizing ball (2), and the outer wall of the bottom of the connecting block (11) is in contact with the outer wall of the top of the insulating sleeve (3).

5. The butterfly-shaped bidirectional locking device for a pressure equalization ball assembly according to claim 1, characterized in that: The outer wall of the nut (13) is slidably connected to the inner wall of the hexagonal limiting plate (22), and the outer wall of the inclined block (19) is slidably connected to the inner wall of the ratchet ring (21).

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