Vacuum circuit breaker

Abstract

The utility model discloses a vacuum circuit breaker, which comprises a first bottom plate and a second bottom plate, a circuit breaker body is arranged on the first bottom plate, a first telescopic rod is arranged on the second bottom plate, the telescopic end of the first telescopic rod is connected to the bottom end of the first bottom plate, and second telescopic rods are arranged on the two sides of the first bottom plate and the two sides of the second bottom plate. According to the utility model, through the cooperation of the clamping mechanisms, the circuit breaker body does not need to frequently fasten and loosen a fixing bolt in the pole climbing process, and the downward sliding of the first bottom plate and the second bottom plate is limited through the gravity effect of the circuit breaker body and the friction between the clamping plate and a telegraph pole. And compared with the prior art, the time for fastening and loosening the fixed bolt is saved, so that the operation is more convenient, and the pole climbing efficiency and the subsequent mounting and fixing efficiency of the circuit breaker body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum circuit breakers, and particularly relates to a vacuum circuit breaker. Background Art

[0002] The utility model with the publication number of CN220208822U provides a vacuum circuit breaker, which includes a circuit breaker body. The circuit breaker body includes a plurality of pole columns, a magnetic isolation plate is fixed between two adjacent pole columns, a fixed bottom plate is fixed under the circuit breaker body, a support bottom plate is installed under the fixed bottom plate, and a plurality of pneumatic telescopic rods are installed between the fixed bottom plate and the support bottom plate. First telescopic rods and second telescopic rods are installed on both sides of the fixed bottom plate and the support bottom plate. First clamps and second clamps are respectively installed at the end parts of the first telescopic rods and the second telescopic rods, and a plurality of fixing bolts are installed between the first clamps and the second clamps. In the utility model, by installing a magnetic isolation plate between two adjacent pole columns, the mutual influence of the magnetic fields between the two pole columns can be reduced. By installing pneumatic telescopic rods between the fixed bottom plate and the support bottom plate, by fixing one of the fixed bottom plate or the support bottom plate and then inflating and deflating the pneumatic telescopic rods, the circuit breaker body can climb the pole.

[0003] During the use of the prior art, it is necessary to frequently lock and loosen the fixing bolts, and the operation is relatively cumbersome. Therefore, a vacuum circuit breaker is needed to meet people's needs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a vacuum circuit breaker to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A vacuum circuit breaker includes a first bottom plate and a second bottom plate. A circuit breaker body is arranged on the first bottom plate. A first telescopic rod is arranged on the second bottom plate, and the telescopic end of the first telescopic rod is connected to the bottom end of the first bottom plate. Second telescopic rods are arranged on both sides of the first bottom plate and the second bottom plate, and a clamping mechanism is arranged at the telescopic end of each second telescopic rod.

[0006] The clamping mechanism includes a first V-groove clamp block and a second V-groove clamp block. Ball bearings are rotatably installed on the inner walls of the V-grooves of the first V-groove clamp block and the second V-groove clamp block. A first spring is connected to the ball bearings. The first V-groove clamp block is connected to the telescopic shaft of the second telescopic rod. Long bolts are rotatably installed on both sides inside the first V-groove clamp block. The long bolts are fitted into the second V-groove clamp block. Nuts are threadedly connected to the threaded sections of the long bolts, and the nuts are located outside the second V-groove clamp block. Two support plates are arranged at the bottom end of the first V-groove clamp block, and the same clamping plate is rotatably installed between the two support plates. The clamping plate is arranged obliquely from top to bottom from the first V-groove clamp block to the second V-groove clamp block direction. A second spring is connected between the clamping plate and the bottom end of the first V-groove clamp block.

[0007] Preferably, ball holes are formed in the inner walls of the V-grooves of the first V-groove clamp block and the second V-groove clamp block. The aperture at the opening of the ball hole is slightly smaller than the diameter of the ball, and the ball is located in the ball hole.

[0008] Preferably, sliding holes are formed in both the first V-groove clamp block and the second V-groove clamp block. The sliding holes communicate with the ball holes and have an inner diameter the same as the diameter of the ball. A first spring is connected to the inner wall at one end of the sliding hole.

[0009] Preferably, a cushion block is connected to the first spring. The cushion block is slidably fitted in the sliding hole, and one end of the ball is movably fitted in the cushion block.

[0010] Preferably, first notch openings are formed on both sides of the first V-groove clamp block. The width of the first notch opening is slightly larger than the width of the nut section of the long bolt. Support shafts are provided at both ends of the nut of the long bolt, and the two support shafts are rotatably installed in the inner walls on both sides of the first notch opening.

[0011] Preferably, second notch openings are formed on both sides of the second V-groove clamp block. The width of the second notch opening is slightly larger than the diameter of the threaded section of the long bolt and smaller than the width of the nut.

[0012] Preferably, the end of the clamping plate away from the connection with the second spring is in a V-groove shape.

[0013] The beneficial effects of the present utility model are as follows:

[0014] In the present utility model, through the cooperation of the clamping mechanism, during the process of the circuit breaker body climbing the pole, there is no need to frequently tighten and loosen the fixing bolts. Through its own gravity and the friction between the clamping plate and the telegraph pole, the downward sliding of the first bottom plate and the second bottom plate is restricted, so as to achieve the purpose of the circuit breaker body smoothly climbing the pole. Compared with the prior art, the time for tightening and loosening the fixing bolts is saved, the operation is more convenient, and the efficiency of the circuit breaker body climbing the pole and subsequent installation and fixation is improved.

[0015] In the present utility model, through the split design between the first V-groove clamp block and the second V-groove clamp block, when the circuit breaker body starts to climb the pole, the clamping mechanism can be more conveniently fixed on the telegraph pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a vacuum circuit breaker proposed by the present utility model;

[0017] Figure 2 is a schematic structural diagram of the clamping mechanism of a vacuum circuit breaker proposed by the present utility model;

[0018] Figure 3Schematic top cross-sectional view of the first V-groove clamp block and the second V-groove clamp block of a vacuum circuit breaker proposed by the present utility model;

[0019] Figure 4 Schematic front cross-sectional view of the first V-groove clamp block of a vacuum circuit breaker proposed by the present utility model;

[0020] Figure 5 Schematic side cross-sectional view of the support shaft of a vacuum circuit breaker proposed by the present utility model.

[0021] In the figure: 1. First bottom plate; 2. Second bottom plate; 3. Circuit breaker body; 4. First telescopic rod; 5. Second telescopic rod; 6. Clamping mechanism; 7. First V-groove clamp block; 8. Second V-groove clamp block; 9. Ball; 10. First spring; 11. Long bolt; 12. Nut; 13. Support plate; 14. Card plate; 15. Second spring; 16. Ball hole; 17. Slide hole; 18. Pad; 19. First notch; 20. Support shaft; 21. Second notch. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Referring to Figures 1-5 , a vacuum circuit breaker includes a first bottom plate 1 and a second bottom plate 2. A circuit breaker body 3 is provided on the first bottom plate 1. A first telescopic rod 4 is provided on the second bottom plate 2. The telescopic end of the first telescopic rod 4 is connected to the bottom end of the first bottom plate 1. Second telescopic rods 5 are provided on both sides of the first bottom plate 1 and the second bottom plate 2. A clamping mechanism 6 is provided on the telescopic end of each second telescopic rod 5;

[0024] The clamping mechanism 6 includes a first V-groove clamp block 7 and a second V-groove clamp block 8. Balls 9 are rotatably installed on the inner walls of the V-grooves of the first V-groove clamp block 7 and the second V-groove clamp block 8. A first spring 10 is connected to the balls 9. The first V-groove clamp block 7 is connected to the telescopic shaft of the second telescopic rod 5. Long bolts 11 are rotatably installed on both sides inside the first V-groove clamp block 7. The long bolts 11 are fitted into the second V-groove clamp block 8. Nuts 12 are threadedly connected to the threaded sections of the long bolts 11. The nuts 12 are located outside the second V-groove clamp block 8. Two support plates 13 are provided at the bottom end of the first V-groove clamp block 7. The same card plate 14 is rotatably installed between the two support plates 13. The card plate 14 is arranged obliquely from top to bottom from the first V-groove clamp block 7 to the second V-groove clamp block 8. A second spring 15 is connected between the bottom end of the card plate 14 and the first V-groove clamp block 7.

[0025] Before climbing the pole, place the second base plate 2 on the ground, drive the second telescopic rod 5 so that the first V-groove clamp block 7 contacts the pole, place the second V-groove clamp block 8 on the other side of the pole, rotate the long bolt 11 and insert it into the second V-groove clamp block 8, rotate the nut 12 to an incompletely tightened state, drive the first telescopic rod 4 so that the first base plate 1 drives the circuit breaker body 3 to rise to a certain height. At this time, the first base plate 1 drives the clamping mechanisms 6 on both sides to rise via the connection of the second telescopic rod 5. Since the nut 12 and the long bolt 11 are not completely tightened, the ball 9 contacts the outer wall of the pole under the elastic force of the first spring 10, making the clamping mechanism 6 rise more smoothly. And after the downward inclined clamping plate 14 contacts the outer wall of the pole, the downward inclination angle becomes larger. When the first telescopic rod 4 contracts, the first base plate 1 tends to descend under the gravity of the circuit breaker body 3. At this time, the friction between the clamping plate 14 and the pole causes the clamping plate 14 to have a tendency to rotate upward. Due to the positioning of the support plate 13, the tendency of the clamping plate 14 to rotate upward is blocked, thereby restricting the descent of the first base plate 1. Furthermore, when the first telescopic rod 4 contracts, it drives the second base plate 2 to rise. This process repeats. When the circuit breaker body 3 rises to the required height, lock the nut 12 so that the second V-groove clamp block 8 and the first V-groove clamp block 7 fix the pole. At this time, the ball 9 is completely received inside the V-groove clamp block, preventing slipping problems. And the clamping plate 14 restricts the downward sliding of the circuit breaker body 3 during the pole climbing process, and further improves the stability of the circuit breaker body 3 after installation and fixation.

[0026] Specifically, in this embodiment, ball holes 16 are provided on the inner walls of the V-grooves of the first V-groove clamp block 7 and the second V-groove clamp block 8. The aperture at the opening of the ball hole 16 is slightly smaller than the diameter of the ball 9. The ball 9 is located in the ball hole 16 to prevent the ball 9 from separating from the first V-groove clamp block 7 and the second V-groove clamp block.

[0027] Specifically, in this embodiment, sliding holes 17 are provided in both the first V-groove clamp block 7 and the second V-groove clamp block 8. The sliding holes 17 communicate with the ball holes 16 and have an inner diameter the same as the diameter of the ball 9. The first spring 10 is connected to the inner wall at one end of the sliding hole 17. When the first V-groove clamp block 7 and the second V-groove clamp block 8 clamp the pole, the ball 9 can move in the sliding hole 17, providing a receiving space for the ball 9.

[0028] Specifically, in this embodiment, a cushion block 18 is connected to the first spring 10. The cushion block 18 is slidably fitted in the sliding hole 17. One end of the ball 9 is movably fitted in the cushion block 18. The cushion block 18 provides a medium for the connection between the first spring 10 and the ball 9, ensuring that when the clamping mechanism 6 moves, the ball 9 rotates when contacting the pole, and at the same time ensuring that when the clamping mechanism 6 is locked, the ball 9 causes the first spring 10 to be compressed under the transmission of the cushion block 18.

[0029] Specifically, in this embodiment, first V-groove clamping blocks 7 are each provided with first notches 19 on both sides. The width of the first notches 19 is slightly larger than the width of the nut section of the long bolt 11. Support shafts 20 are provided at both ends of the nut of the long bolt 11. The two support shafts 20 are rotatably installed in the inner walls on both sides of the first notch 19. The first notch 19 provides a storage space for the nut of the long bolt 11. Through the connection of the support shafts 20, the long bolt 11 can rotate around the support shafts 20 as the center, thus realizing the separation of the long bolt 11 from the first notch 19. On the contrary, it facilitates the insertion of the long bolt 11 into the first V-groove clamping block 7. And when the nut 12 is screwed onto the threaded section of the long bolt 11, the support shafts 20 effectively limit the axial rotation of the long bolt 11, ensuring that the nut 12 can be screwed in smoothly.

[0030] Specifically, in this embodiment, second V-groove clamping blocks 8 are each provided with second notches 21 on both sides. The width of the second notches 21 is slightly larger than the diameter of the threaded section of the long bolt 11 and smaller than the width of the nut 12. The second notches 21 provide a storage space for the insertion of the threaded section of the long bolt 11, thereby making the connection between the second V-groove clamping block 8 and the first V-groove clamping block 7 more rapid and convenient.

[0031] Specifically, in this embodiment, the end of the clamping plate 14 away from the connection with the second spring 15 is in a V-groove shape, which increases the contact area between the clamping plate 14 and the circular outer wall of the utility pole, thereby greatly increasing the friction between the clamping plate 14 and the utility pole, and further ensuring that the clamping plate 14 is more stably clamped under the downward sliding trend of the first bottom plate 1 and the second bottom plate 2.

[0032] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A vacuum circuit breaker, comprising a first bottom plate (1) and a second bottom plate (2), characterized in that: A circuit breaker body (3) is provided on the first bottom plate (1), a first telescopic rod (4) is provided on the second bottom plate (2), and the telescopic end of the first telescopic rod (4) is connected to the bottom end of the first bottom plate (1). Second telescopic rods (5) are provided on both sides of the first bottom plate (1) and the second bottom plate (2), and a clamping mechanism (6) is provided on the telescopic end of each second telescopic rod (5). The clamping mechanism (6) includes a first V-groove clamp block (7) and a second V-groove clamp block (8). Ball bearings (9) are rotatably installed on the inner walls of the V-grooves of the first V-groove clamp block (7) and the second V-groove clamp block (8). A first spring (10) is connected to the ball bearings (9). The first V-groove clamp block (7) is connected to the telescopic shaft of the second telescopic rod (5). Long bolts (11) are rotatably installed on both sides inside the first V-groove clamp block (7). The long bolts (11) are fitted into the second V-groove clamp block (8). Nuts (12) are threadedly connected to the threaded sections of the long bolts (11), and the nuts (12) are located outside the second V-groove clamp block (8). Two support plates (13) are provided on the bottom end of the first V-groove clamp block (7). The same clamping plate (14) is rotatably installed between the two support plates (13). The clamping plate (14) is arranged obliquely downward from the first V-groove clamp block (7) towards the second V-groove clamp block (8). A second spring (15) is connected between the clamping plate (14) and the bottom end of the first V-groove clamp block (7).

2. A vacuum circuit breaker according to claim 1, characterized in that: Ball holes (16) are provided on the inner walls of the V-grooves of the first V-groove clamp block (7) and the second V-groove clamp block (8). The aperture at the opening of the ball hole (16) is slightly smaller than the diameter of the ball bearing (9), and the ball bearing (9) is located inside the ball hole (16).

3. A vacuum circuit breaker according to claim 1, characterized in that: Sliding holes (17) are provided inside the first V-groove clamp block (7) and the second V-groove clamp block (8). The sliding holes (17) communicate with the ball holes (16) and have the same inner diameter as the diameter of the ball bearing (9). The first spring (10) is connected to the inner wall of one end of the sliding hole (17).

4. A vacuum circuit breaker according to claim 1, characterized in that: A cushion block (18) is connected to the first spring (10). The cushion block (18) is slidably fitted inside the sliding hole (17), and one end of the ball bearing (9) is movably fitted inside the cushion block (18).

5. A vacuum circuit breaker according to claim 1, characterized in that: First notches (19) are provided on both sides of the first V-groove clamp block (7). The width of the first notch (19) is slightly larger than the width of the nut section of the long bolt (11). Support shafts (20) are provided at both ends of the nut of the long bolt (11). The two support shafts (20) are rotatably installed inside the side walls of the first notch (19).

6. A vacuum circuit breaker according to claim 1, characterized in that: Second notches (21) are provided on both sides of the second V-groove clamp block (8). The width of the second notch (21) is slightly larger than the diameter of the threaded section of the long bolt (11) and smaller than the width of the nut (12).

7. A vacuum circuit breaker according to claim 1, characterized in that: The end of the clamping plate (14) far from the connection with the second spring (15) is in a V-groove shape.

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