Outdoor vacuum circuit breaker transmission assembly

Abstract

The utility model relates to the technical field of vacuum circuit breakers, in particular to a transmission assembly of an outdoor vacuum circuit breaker, which comprises a frame and a connecting rod, a rotating shaft is rotatably connected in the frame, a plurality of crank arms are fixedly connected on the outer wall of the rotating shaft, and one end of each crank arm is rotatably connected with an insulating pull rod through a shaft rod. According to the utility model, each movable roller is arranged, so that the rotation of the rotating shaft is smoother and more stable, a worker can conveniently lubricate the rotating shaft, the working efficiency is improved, and the working efficiency is improved. And the telescopic push rod is arranged to be matched with the limiting block and the like, so that the stability of the closing head clamped at the upper end of the insulator can be improved, and the situation that the closing head is loosened and the closing operation is influenced is avoided.

Description

Technical Field

[0001] This utility model relates to the field of vacuum circuit breaker technology, specifically an outdoor vacuum circuit breaker drive assembly. Background Technology

[0002] Vacuum circuit breakers are named for their high vacuum conditions, which are the arc-extinguishing medium and the insulating medium between the contacts after arc extinguishing. They have advantages such as small size, light weight, suitability for frequent operation, and maintenance-free arc extinguishing, making them widely used in power distribution networks. Vacuum circuit breakers are often equipped with transmission components, which are mechanical devices that transmit the movement of the operating mechanism to the arc-extinguishing chamber to realize the closing and opening operations of the arc-extinguishing chamber. The transmission mechanism plays a crucial role in vacuum circuit breakers, ensuring the normal switching operation of the circuit breaker.

[0003] In the prior art, such as the vacuum circuit breaker transmission structure proposed in patent application number "CN202221628794.2", limiting units are set on both sides of the lower end of the circuit breaker unit, and a rolling unit is set inside the end of the limiting unit away from the circuit breaker unit. A special tooling is inserted on the outer side of the lower end of the screw, so that the operation between the transmission components is more stable when the vacuum circuit breaker is running, and the test parameters are more accurate.

[0004] However, in the aforementioned patent application, the rotating shaft in the vacuum circuit breaker drive assembly is the main drive component, and maintaining normal rotation performance is particularly important. But in reality, the rotating shaft is simply connected to the frame on the vacuum circuit breaker. During rotation, it constantly rubs against the frame, which can easily cause damage after long-term use, affecting rotational stability. Moreover, since it is installed outdoors, it is easily affected by external dust and rain, which can cause blockages. It is inconvenient for staff to lubricate it, resulting in reduced rotational performance and affecting the switching operation. Utility Model Content

[0005] The purpose of this invention is to provide an outdoor vacuum circuit breaker drive assembly to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An outdoor vacuum circuit breaker transmission assembly includes a frame and a connecting rod. A rotating shaft is rotatably connected inside the frame. A plurality of crank arms are fixedly connected to the outer wall of the rotating shaft. One end of each crank arm is rotatably connected to an insulating pull rod via a shaft. The end of the insulating pull rod away from the crank arm is rotatably connected to the connecting rod via a shaft. A closing head is fixedly installed at one end of the connecting rod. A plurality of insulators are fixedly installed on the outer wall of the frame. A lubrication mechanism is provided on the upper surface of the frame. A housing is fixedly installed on the outer wall of the frame, located outside the rotating shaft.

[0008] The lubrication mechanism includes an oil reservoir, which is fixedly installed on the upper surface of the frame. An oil filling pipe is fixedly connected to the outer side wall of the oil reservoir near the upper part. A connecting chamber is fixedly connected to the bottom surface of the oil reservoir, and the bottom of the connecting chamber is fixedly connected to a limiting ring.

[0009] Preferably, a limiting ring is fixedly installed inside the outer casing, and a plurality of movable rollers are rotatably connected to the inner wall of the limiting ring via a shaft. Sealing gaskets are fixedly installed near both ends of the inner wall of the outer casing.

[0010] Preferably, limit shells are fixedly installed on both inner side walls of the oil storage box, two pull rods are movably inserted into the inside of the oil storage box, and a piston is movably inserted into the bottom of the inside of the oil storage box, with the bottom ends of the two pull rods fixedly connected to the piston.

[0011] Preferably, the oil storage box has sliding plates slidably connected to both inner side walls and inside the two limiting shells, and the sliding plates are fixedly connected to the pull rod. A spring plate is sleeved on the outside of the pull rod and between the top of the oil storage box and the sliding plate.

[0012] The upper end of the spring sheet is fixedly connected to the top of the inside of the oil storage box, and the lower end of the spring sheet is fixedly connected to the bottom of the inside of the limiting shell.

[0013] Preferably, a pull plate is movably installed above the oil storage box, and the upper ends of the two pull rods are fixedly connected to the pull plate. A sponge board is fixedly installed at the bottom of the connecting compartment.

[0014] Preferably, L-shaped connecting plates are fixedly installed on both outer side walls of the closing head, and telescopic push rods are fixedly installed on the inner walls of both L-shaped connecting plates.

[0015] Preferably, a limit block is fixedly installed at the end of each of the two telescopic push rods away from the L-shaped connecting plate, and a support spring is sleeved on the outside of each of the two telescopic push rods.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model supports the rotating shaft by setting various movable rollers, and can convert the friction between the outer shell and the limiting ring during rotation into rolling friction, reducing friction and making the rotating shaft rotate more smoothly and stably. By pulling the pull plate, the two pull rods move, and the slide plate follows the pull rods, squeezing the spring plate, thereby driving the piston to move out from the bottom of the oil reservoir. At this time, the lubricating oil can enter the connecting chamber through the oil reservoir, soaking the sponge plate. The sponge plate is in close contact with the outer wall of the rotating shaft, which can apply the lubricating oil to the outer wall of the rotating shaft, making it easy for the operator to lubricate the rotating shaft and avoid the rotating shaft from being blocked, which would affect the switching operation of the outdoor vacuum circuit breaker.

[0018] 2. In this utility model, when the closing head is locked on the upper end of the insulator for closing, the inclined surfaces of the two limiting blocks move along the upper end of the insulator, which can separate the two limiting blocks from each other until the closing head is completely locked on the upper end of the insulator. Under the action of the rebound force of the support spring, the telescopic push rod is driven to extend, so that the two limiting blocks clamp the upper end of the insulator. This can improve the stability of the closing head being locked on the upper end of the insulator, avoid loosening, and prevent affecting the closing operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the present invention;

[0022] Figure 3 This is a cross-sectional view of the limiting ring and the oil reservoir in this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the sliding plate and the spring sheet in this utility model;

[0024] Figure 5 This is a cross-sectional view of the closing head in this utility model.

[0025] The attached figures are labeled as follows:

[0026] 1. Frame; 2. Rotating shaft; 3. Closing head; 4. Insulator; 5. Connecting rod; 6. Crank arm; 7. Insulating pull rod; 8. Oil reservoir; 9. Housing; 10. Limiting ring; 11. Sealing gasket; 12. Movable roller; 13. Limiting shell; 14. Piston; 15. Pull rod; 16. Pull plate; 17. Connecting compartment; 18. Sponge board; 19. Slide plate; 20. Spring plate; 21. L-shaped connecting plate; 22. Limiting block; 23. Telescopic push rod. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] An outdoor vacuum circuit breaker drive assembly, such as Figures 1-5 As shown, the system includes a frame 1 and a connecting rod 5. A rotating shaft 2 is rotatably connected inside the frame 1. Several crank arms 6 are fixedly connected to the outer wall of the rotating shaft 2. One end of each crank arm 6 is rotatably connected to an insulating pull rod 7 via a shaft. The end of the insulating pull rod 7 away from the crank arm 6 is rotatably connected to the connecting rod 5 via a shaft. A closing head 3 is fixedly installed at one end of the connecting rod 5. Several insulators 4 are fixedly installed on the outer wall of the frame 1. A lubrication mechanism is provided on the upper surface of the frame 1. A housing 9 is fixedly installed on the outer wall of the frame 1 outside the rotating shaft 2. The lubrication mechanism includes an oil storage box 8, which is fixedly installed on the upper surface of the frame 1. An oil filling pipe is fixedly connected to the outer side wall of the oil storage box 8 near the upper part. A connecting chamber 17 is fixedly connected to the bottom surface of the oil storage box 8, and the bottom of the connecting chamber 17 is fixedly connected to a limiting ring 10.

[0029] In use, one end of the rotating shaft 2 is connected to the operating mechanism in the outdoor vacuum circuit breaker. The operating mechanism drives the rotating shaft 2 to rotate, thus opening and closing the circuit. The end of the connecting rod 5 away from the closing head 3 is rotatably connected to the outdoor vacuum circuit breaker. When the rotating shaft 2 rotates, it drives one end of each crank arm 6 to rotate simultaneously, which in turn drives one end of each insulating rod 7 to move. This allows the closing head 3 installed on one end of the connecting rod 5 to rotate out from the insulator 4 for opening. Similarly, the rotating shaft 2 can be reversed to close the circuit.

[0030] A limiting ring 10 is fixedly installed inside the outer casing 9. Several movable rollers 12 are rotatably connected to the inner wall of the limiting ring 10 via a shaft. Sealing gaskets 11 are fixedly installed near both ends of the inner wall of the outer casing 9. The sealing gaskets 11 can improve the sealing performance of the outer casing 9 and prevent external dust and other dirt from entering and affecting the normal rotation of the rotating shaft 2.

[0031] Specifically, when the rotating shaft 2 rotates, each movable roller 12 supports the rotating shaft 2 and can convert the friction between the outer shell 9 and the limiting ring 10 when rotating into rolling friction, reducing friction and making the rotating shaft 2 rotate more smoothly and stably.

[0032] The oil storage box 8 has two inner walls with fixed limit shells 13. Two pull rods 15 are movably inserted into the oil storage box 8. A piston 14 is movably inserted into the bottom of the oil storage box 8. The bottom ends of the two pull rods 15 are fixedly connected to the piston 14. Slide plates 19 are slidably connected to the two inner walls of the oil storage box 8 and inside the two limit shells 13. The slide plates 19 are fixedly connected to the pull rods 15. A spring plate 20 is sleeved on the outside of the pull rods 15 and between the top of the oil storage box 8 and the slide plate 19. The upper end of the spring plate 20 is fixedly connected to the top of the oil storage box 8 and the bottom end of the spring plate 20 is fixedly connected to the bottom of the limit shell 13. A pull plate 16 is movably installed on the top of the oil storage box 8. The upper ends of the two pull rods 15 are fixedly connected to the pull plate 16. A sponge plate 18 is fixedly installed at the bottom of the connecting compartment 17.

[0033] Specifically, the refueling pipe is fitted with a cap. Removing the cap allows lubricating oil to be added to the oil reservoir 8. When lubrication of the rotating shaft 2 is required, pulling the pull plate 16 moves the two pull rods 15, causing the slide plate 19 to follow the pull rods 15 and compress the spring plate 20. This causes the piston 14 to move out from the bottom of the oil reservoir 8. At this time, lubricating oil can enter the connecting chamber 17 through the oil reservoir 8, soaking the sponge plate 18. The sponge plate 18 is in close contact with the outer wall of the rotating shaft 2, allowing lubricating oil to be applied to the outer wall of the rotating shaft 2, thus preventing blockage and ensuring proper operation of the outdoor vacuum circuit breaker. Afterwards, releasing the pull plate 16 allows the piston 14 to move back to its initial position under the rebound force of the two spring plates 20, sealing the bottom of the oil reservoir 8.

[0034] L-shaped connecting plates 21 are fixedly installed on both outer walls of the closing head 3. Telescopic push rods 23 are fixedly installed on the inner walls of the two L-shaped connecting plates 21. Limiting blocks 22 are fixedly installed on the ends of the two telescopic push rods 23 away from the L-shaped connecting plates 21. Supporting springs are sleeved on the outside of the two telescopic push rods 23.

[0035] Specifically, when the closing head 3 is engaged on the upper end of the insulator 4 for closing, the inclined surfaces of the two limiting blocks 22 move along the upper end of the insulator 4, which allows the two limiting blocks 22 to separate from each other. The two telescopic push rods 23 are compressed and shortened, and the support spring is compressed and contracted until the closing head 3 is fully engaged on the upper end of the insulator 4. Under the action of the rebound force of the support spring, the telescopic push rods 23 are extended, so that the two limiting blocks 22 clamp the upper end of the insulator 4. This can improve the stability of the closing head 3 engaged on the upper end of the insulator 4, prevent loosening, and avoid affecting the closing operation.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An outdoor vacuum circuit breaker transmission assembly comprising a frame (1) and a connecting rod (5), characterized in that, The frame (1) is rotatably connected with a rotating shaft (2), the outer wall of the rotating shaft (2) is fixedly connected with a plurality of crank arms (6), one end of the plurality of crank arms (6) is rotatably connected with an insulating pull rod (7) through a shaft, the end of the insulating pull rod (7) away from the crank arm (6) is rotatably connected with a connecting rod (5) through a shaft, one end of the connecting rod (5) is fixedly installed with a closing head (3), the outer wall of the frame (1) is fixedly installed with a plurality of insulators (4), the upper surface of the frame (1) is provided with a lubricating mechanism, and the outer wall of the frame (1) and located outside the rotating shaft (2) is fixedly installed with an outer shell (9). The lubricating mechanism comprises an oil storage box (8), the oil storage box (8) is fixedly installed on the upper surface of the frame (1), the outer side wall of the oil storage box (8) is fixedly connected with an oil filling pipe near the upper part, and the bottom surface of the oil storage box (8) is fixedly connected with a connecting bin (17), and the bottom of the connecting bin (17) is fixedly connected with a limiting ring (10).

2. The outdoor vacuum circuit breaker drive assembly of claim 1, wherein, The limiting ring (10) is fixedly installed in the outer shell (9), a plurality of movable rollers (12) are rotatably connected with the inner wall of the limiting ring (10) through a shaft, and the inner wall of the outer shell (9) is fixedly installed with a sealing gasket (11) near both ends.

3. The outdoor vacuum circuit breaker drive assembly of claim 1, wherein, The two inner side walls of the oil storage box (8) are fixedly installed with limiting shells (13), two pull rods (15) are movably inserted into the oil storage box (8), and a piston (14) is movably inserted into the bottom end of the oil storage box (8). The bottom end of the two pull rods (15) is fixedly connected with the piston (14).

4. The outdoor vacuum circuit breaker drive assembly of claim 3, wherein, The two inner side walls of the oil storage box (8) and located inside the two limiting shells (13) are slidably connected with a sliding plate (19), and the sliding plate (19) is fixedly connected with the pull rod (15). The pull rod (15) is externally sleeved with a spring sheet (20) between the top end of the oil storage box (8) and the sliding plate (19). The upper end of the spring sheet (20) is fixedly connected with the top end of the oil storage box (8), and the bottom end of the spring sheet (20) is fixedly connected with the bottom end of the limiting shell (13).

5. The outdoor vacuum circuit breaker drive assembly of claim 3, wherein, The oil storage box (8) is movably installed with a pull plate (16), the upper end of the two pull rods (15) is fixedly connected with the pull plate (16), and the bottom end of the connecting bin (17) is fixedly installed with a sponge plate (18).

6. The outdoor vacuum circuit breaker drive assembly of claim 1, wherein, The two outer side walls of the closing head (3) are fixedly installed with L-shaped connecting plates (21), and the inner walls of the two L-shaped connecting plates (21) are fixedly installed with telescopic push rods (23).

7. The outdoor vacuum circuit breaker drive assembly of claim 6, wherein, The end of the two telescopic push rods (23) away from the L-shaped connecting plate (21) is fixedly installed with a limiting block (22), and the outer part of the two telescopic push rods (23) is sleeved with a supporting spring.

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