Opening and closing spring of circuit breaker

Abstract

The utility model relates to the technical field of opening and closing springs, and discloses an opening and closing spring of a circuit breaker, which comprises a pressing block and an elastic plate, a backing plate and a sliding plate are arranged on a supporting plate, a supporting column is arranged on the backing plate, and a first spring and a second spring are arranged above the backing plate and outside the supporting column. A double-spring structure is arranged to ensure that the second spring can replace the first spring to continuously work for a period of time when the first spring is broken; when the first spring is in a normal compression state, the pressing block is driven to descend together, at the moment, when the pressing block passes through the elastic plate, the pressure generated on the elastic plate is slight, however, once the compressed first spring is broken, the pressing block rebounds rapidly, and at the moment, the value of the pressure generated on the elastic plate by the pressing block is sharply increased; the pressure sensor monitors a signal that the pressure of the elastic plate is increased and then reminds a maintainer to replace and maintain in time, and the situation that the circuit breaker stops working due to spring breakage is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of circuit breaker opening and closing springs, specifically relating to a circuit breaker opening and closing spring. Background Technology

[0002] The opening and closing spring is a component of the operating mechanism, which is the operating system of the circuit breaker. The opening and closing spring is a compression energy storage element that relies on an electric motor for power. When the circuit breaker opens, the opening and closing spring can instantly release a force to quickly open the circuit breaker. Due to its relatively simple structure, the existing opening and closing springs will stop working directly when the spring breaks, affecting the use of the circuit breaker. More seriously, after the spring breaks, due to the lack of an effective monitoring and alarm mechanism, the staff often cannot detect the problem in time. This may lead to the circuit not being cut off in time, resulting in greater safety hazards. In addition, the sudden breakage of the spring may also damage other components, increasing maintenance costs and downtime. Summary of the Invention

[0003] The purpose of this utility model is to overcome the above-mentioned problems and provide a circuit breaker opening and closing spring that can solve the problem that the existing opening and closing springs have a relatively simple structure, which causes the device to stop working directly when the spring breaks and cannot be repaired in time, thus affecting the use of the circuit breaker.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a circuit breaker opening and closing spring, including a support plate, a pad fixedly provided at the bottom of the support plate, a support column slidably provided at the center of the pad, a first spring and a second spring provided above the pad on the outside of the support column, the second spring being located inside the first spring, and a sliding plate fixedly provided at the top of the support column.

[0006] A pressure block is fixedly installed on the outside of the first spring, an elastic plate is fixedly installed at the center of the support plate, and a pressure sensor is fixedly installed above the elastic plate.

[0007] A further improvement of this utility model is that threaded holes are provided at all four corners of the support plate, and screws are installed in the threaded holes to fix the support plate inside the circuit breaker.

[0008] A further improvement of this utility model is that a vertical frame is provided on the top of the pad, the vertical frame is L-shaped, and a baffle is provided on the top of the other side of the pad, the baffle being attached to the side of the vertical frame.

[0009] A further improvement of this utility model is that a vertical groove is provided on the support plate, and a vertical block is slidably connected inside the vertical groove, and the vertical block is fixedly connected to the slide plate.

[0010] A further improvement of this utility model is that a discharge pipe is fixedly connected to the bottom of the pad.

[0011] A further improvement of this utility model is that a micro motor is installed at the bottom of the support plate, and a threaded rod is fixedly provided at the top of the micro motor.

[0012] A further improvement of this invention is that two threaded blocks are slidably disposed above the threaded rod, and a nozzle is installed on one side of each of the two threaded blocks.

[0013] A further improvement of this utility model is that an oil storage box is provided on the support plate, the oil storage box is connected to an oil pipe, and the other end of the oil pipe is connected to the nozzle.

[0014] A further improvement of this invention is that the threaded rod has two sets of opposite threads on its exterior.

[0015] A further improvement of this invention is that a controller and an alarm are installed on the support plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model provides a circuit breaker's opening and closing spring. A support plate is installed, with a pad and a sliding plate on the support plate. A support column is installed on the pad, enhancing the stability and support force of the entire spring structure. A first spring and a second spring are installed above the pad, outside the support column. This dual-spring structure ensures that if the first spring breaks, the second spring can continue to operate for a period of time in place of the first spring. When the first spring is in its normal compressed state, it pulls a pressure block fixed to its outside downwards. At this time, the pressure exerted on the elastic plate by the pressure block is slight. However, once the compressed first spring breaks, the pressure block loses its original restraint and quickly rebounds. The pressure value exerted by the pressure block on the elastic plate increases sharply. A pressure sensor installed above the elastic plate detects the increased pressure and alerts maintenance personnel to replace and repair the spring in a timely manner, preventing the circuit breaker from stopping operation due to spring breakage.

[0018] Furthermore, threaded holes are provided at all four corners of the support plate, and screws are installed in the threaded holes to fix the support plate inside the circuit breaker. Fixing the four corners of the support plate with screws can ensure that the support plate is stable and does not wobble inside the circuit breaker. At the same time, the connection method of threaded holes and screws allows the support plate to be easily disassembled when needed, which facilitates the maintenance, inspection and replacement of the circuit breaker.

[0019] Furthermore, a vertical frame is provided on the top of the pad, and the vertical frame is L-shaped. A baffle is provided on the top of the other side of the pad, and the baffle fits against the side of the vertical frame. An oil storage space is formed between the pad, the vertical frame and the baffle. The lubricating oil sprayed on the first spring drips into the oil storage space and is collected, which avoids the lubricating oil dripping directly into the circuit breaker and causing pollution or waste. At the same time, the collected lubricating oil can be reused, which improves the efficiency of resource use.

[0020] Furthermore, the support plate has a vertical groove, and a vertical block is slidably connected inside the groove. The vertical block is fixedly connected to the skateboard and is slidably connected through the groove. This structure provides stable support and guidance for the skateboard. When the first spring extends and retracts, the skateboard moves up and down accordingly. The sliding of the vertical block in the groove ensures the smoothness and straightness of the skateboard's movement, avoiding structural damage or performance degradation caused by deviation of the movement trajectory. Attached Figure Description

[0021] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the present invention and do not specifically limit the shapes and proportions of the components of the present invention.

[0022] Figure 1 This is a schematic diagram of the overall structure of the opening and closing springs of the circuit breaker of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the opening and closing springs of the circuit breaker of this utility model;

[0024] Figure 3 This is a schematic diagram of the spring structure in this utility model;

[0025] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0026] The components are: 1. Support plate; 2. Pad plate; 3. Support column; 4. First spring; 5. Second spring; 6. Slide plate; 7. Vertical frame; 8. Vertical groove; 9. Vertical block; 11. Pressure block; 12. Elastic plate; 13. Pressure sensor; 14. Controller; 15. Alarm; 16. Micro motor; 17. Threaded rod; 18. Threaded block; 19. Nozzle; 20. Oil storage box; 21. Baffle; 22. Discharge pipe; 23. Threaded hole. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings:

[0034] like Figures 1-4 As shown, this utility model embodiment provides a circuit breaker opening and closing spring, including a support plate 1 and a pad 2. The pad 2 is fixedly disposed at the bottom of the support plate 1. Threaded holes 23 are provided at each of the four corners of the support plate 1. Screws are installed in the threaded holes 23 to fix the support plate 1 inside the circuit breaker. By fixing the four corners of the support plate 1 with screws, it can be ensured that the support plate 1 is stable and does not shake inside the circuit breaker. At the same time, the connection method of the threaded holes 23 and screws allows the support plate 1 to be easily disassembled when needed, which is convenient for the maintenance, inspection and replacement of the circuit breaker.

[0035] A support column 3 is slidably mounted at the center of the pad 2. A first spring 4 and a second spring 5 are mounted on the upper part of the pad 2, outside the support column 3. The second spring 5 is located inside the first spring 4. The first spring 4 is used as the main spring. The first spring 4 enables the circuit breaker to store energy. The second spring 5 prevents the circuit breaker from becoming unusable if the first spring 4 suddenly breaks. The second spring 5 can replace the first spring 4 and continue to work for a period of time after the first spring 4 breaks, ensuring the normal operation of the circuit breaker and improving its stability. Although the second spring 5 can replace the first spring 4 for a period of time, it is only used as an auxiliary spring.

[0036] A sliding plate 6 is fixedly installed on the top of the support column 3. A vertical groove 8 is opened on the support plate 1. A vertical block 9 is slidably connected inside the vertical groove 8. The vertical block 9 is fixedly connected to the sliding plate 6. The cooperation between the support column 3 and the sliding plate 6, and the vertical block 9 and the vertical groove 8, provides a stable support structure for the first spring 4 and the second spring 5, ensuring that they can remain stable during extension and contraction and are not prone to displacement or shaking. A pressure block 11 is fixedly installed on the outside of the first spring 4. An elastic plate 12 is fixedly installed at the center of the support plate 1. A pressure sensor 13 is fixedly installed above the elastic plate 12. A controller 14 and an alarm 15 are installed on the support plate 1. By setting the pressure block 11 on the outside of the first spring 4 and cooperating with the elastic plate 12 and the pressure sensor 13, the compression state of the first spring 4 can be monitored in real time. Once the first spring 4 breaks, the pressure block 11 will quickly rebound and impact the elastic plate 12, causing the pressure value sensed by the pressure sensor 13 to increase sharply. After receiving the signal sent by the pressure sensor 13, the controller 14 will immediately control the alarm 15 to sound an alarm, reminding the staff to pay attention and take appropriate maintenance measures.

[0037] A micro motor 16 is installed at the bottom of the support plate 1, and a threaded rod 17 is fixedly installed at the top of the micro motor 16. Two sets of opposite threads are provided on the outside of the threaded rod 17. Two threaded blocks 18 are slidably installed above the threaded rod 17, and nozzles 19 are installed on one side of each of the two threaded blocks 18. An oil storage box 20 is installed on the support plate 1, and an oil pipe is connected to the oil storage box 20, with the other end of the oil pipe connected to the nozzle 19. A discharge pipe 22 is fixedly connected to the bottom of the pad plate 2. Lubricating oil in the oil storage box 20 periodically enters the interior of the nozzle 19 through the oil pipe. The micro motor 16 drives the threaded rod 17 to rotate. Due to the two sets of opposite threads on the outside of the threaded rod 17… The threads are opposite, so when the threaded rod 17 rotates, the two threaded blocks 18 and the nozzles 19 move in opposite directions. The two nozzles 19 spray out lubricating oil and increase the spray range, so that the first spring 4 can be sprayed with lubricating oil from top to bottom. Spraying lubricating oil prevents the first spring 4 from rusting, prevents it from breaking, and reduces noise during extension and contraction. The top of the pad 2 is provided with a vertical frame 7, which is L-shaped. The top of the other side of the pad 2 is provided with a baffle 21, which fits against the side of the vertical frame 7. An oil storage space is formed between the pad 2, the vertical frame 7, and the baffle 21. The lubricating oil sprayed on the first spring 4 drips into the oil storage space and is collected.

[0038] Working principle

[0039] The screw passes through the threaded hole 23 to install the support plate 1 into the circuit breaker. A first spring 4 and a second spring 5 are provided. The first spring 4 is used as the main spring and enables the circuit breaker to store energy. The second spring 5 can prevent the circuit breaker from becoming unusable if the first spring 4 suddenly breaks. The second spring 5 can replace the first spring 4 and continue to work for a period of time after the first spring 4 breaks, ensuring the normal operation of the circuit breaker and improving its stability. Although the second spring 5 can replace the first spring 4 for a period of time, it is only used as an auxiliary spring.

[0040] When the first spring 4 is compressed, the support column 3 and the slide plate 6 descend. At this time, the vertical block 9 slides down in the vertical groove 8, providing support for the slide plate 6 during descent. When the first spring 4 is normally compressed, it also drives the pressure block 11 to descend. Then the pressure block 11 passes through the elastic plate 12. Since the first spring 4 has not broken at this time, the pressure of the pressure block 11 on the elastic plate 12 is slight. However, once the compressed first spring 4 breaks, the pressure block 11 will quickly rebound and then quickly pass through the elastic plate 12. At this time, the pressure value of the pressure block 11 on the elastic plate 12 will increase. The pressure sensor 13 detects the signal of increased pressure on the elastic plate 12 and then transmits the signal to the controller 14. After receiving the signal, the controller 14 controls the alarm 15 to sound an alarm, which helps to remind when the first spring 4 breaks. Conversely, when the alarm 15 sounds an alarm, it means that the first spring 4 has broken. After the first spring 4 is found to be broken, it needs to be replaced and repaired in time. The support column 3 helps to improve the stability of the first spring 4 and the second spring 5 during expansion and contraction.

[0041] Since springs are usually made of iron, the probability of them breaking increases when they extend and retract while rusted. Furthermore, rusted springs produce more noise during extension and retraction. Lubricating oil in the oil reservoir 20 periodically enters the nozzle 19 through the oil pipe, activating the micro motor 16 to rotate the threaded rod 17. Because the two sets of threads on the outside of the threaded rod 17 are opposite, when the threaded rod 17 rotates, the two threaded blocks 18 move in the opposite direction to the nozzle 19. The two nozzles 19 move in the opposite direction, spraying out lubricating oil and increasing the spray range, ensuring that the first spring 4 can be sprayed with lubricating oil from top to bottom. Spraying lubricating oil prevents the first spring 4 from rusting, preventing breakage and reducing noise during extension and retraction. An oil storage space is formed between the pad 2, the vertical frame 7, and the baffle 21. The lubricating oil sprayed onto the first spring 4 drips into the oil storage space and is collected. Then, waste oil is periodically discharged through the discharge pipe 22.

[0042] Many embodiments and applications beyond the examples provided will be apparent to those skilled in the art upon reading the foregoing description. Therefore, the scope of this teaching should not be determined by reference to the foregoing description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed utility model subject matter.

[0043] The above content provides a further detailed description of this utility model. It should not be considered that the specific embodiments of this utility model are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the scope of protection of this utility model as defined by the submitted claims.

Claims

1. A circuit breaker's opening and closing spring, characterized in that, Includes a support plate (1), a pad (2) is fixedly provided at the bottom of the support plate (1), a support column (3) is slidably provided at the center of the pad (2), a first spring (4) and a second spring (5) are provided above the pad (2) on the outside of the support column (3), the second spring (5) is located inside the first spring (4), and a sliding plate (6) is fixedly provided at the top of the support column (3). A pressure block (11) is fixedly installed on the outside of the first spring (4), an elastic plate (12) is fixedly installed at the center of the support plate (1), and a pressure sensor (13) is fixedly installed above the elastic plate (12).

2. The opening and closing spring of a circuit breaker according to claim 1, characterized in that, The support plate (1) is provided with threaded holes (23) at all four corners, and screws are provided in the threaded holes (23) to fix the support plate (1) in the circuit breaker.

3. The opening and closing spring of a circuit breaker according to claim 1, characterized in that, The top of the pad (2) is provided with a vertical frame (7), the vertical frame (7) is L-shaped, and the top of the other side of the pad (2) is provided with a baffle (21), the baffle (21) is attached to the side of the vertical frame (7).

4. The opening and closing spring of a circuit breaker according to claim 1, characterized in that, The support plate (1) has a vertical groove (8), and a vertical block (9) is slidably connected inside the vertical groove (8). The vertical block (9) is fixedly connected to the slide plate (6).

5. The opening and closing spring of a circuit breaker according to claim 1, characterized in that, The bottom of the pad (2) is fixedly connected to the discharge pipe (22).

6. The opening and closing spring of a circuit breaker according to claim 1, characterized in that, A micro motor (16) is installed at the bottom of the support plate (1), and a threaded rod (17) is fixedly installed at the top of the micro motor (16).

7. The opening and closing spring of a circuit breaker according to claim 6, characterized in that, Two threaded blocks (18) are slidably disposed above the threaded rod (17), and a nozzle (19) is installed on one side of each of the two threaded blocks (18).

8. The opening and closing spring of a circuit breaker according to claim 6, characterized in that, An oil storage box (20) is provided on the support plate (1), and an oil pipe is connected to the oil storage box (20), with the other end of the oil pipe connected to the nozzle (19).

9. The opening and closing spring of a circuit breaker according to claim 6, characterized in that, The threaded rod (17) has two sets of opposite threads on its exterior.

10. The opening and closing spring of a circuit breaker according to claim 1, characterized in that, The support plate (1) is equipped with a controller (14) and an alarm (15).

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