Anti-springback mechanism of circuit breaker

Abstract

An anti-rebound mechanism of a circuit breaker comprises fixing plates, a rotating shaft and a limiting shaft are arranged between the fixing plates, a rotating shaft suspension piece is installed on the rotating shaft, one end of the rotating shaft suspension piece abuts against the limiting shaft for limiting through rotating action so that the circuit breaker can be in a power-off state, and an anti-rebound piece is arranged on the rotating shaft suspension piece. A driving piece is arranged on the rotating shaft, and the anti-rebound piece rotates along with the rotating shaft suspension piece to abut against the limiting shaft and then is driven by the driving piece to abut against the limiting shaft, so that the rotating shaft suspension piece cannot rotate. Due to the anti-rebound sheet, the impact force generated when the rotating shaft suspension sheet is in contact with the limiting shaft is eliminated, and the rebound phenomenon caused by overlarge impact force is avoided, so that the stability of the circuit breaker in the operation process is improved. The anti-springback sheet is driven by the driving piece to abut against the limiting shaft, so that the stable state of the rotating shaft suspension sheet in the operation process of the circuit breaker is ensured, the instant power-on state during springback is avoided, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to an anti - rebound mechanism for a circuit breaker, belonging to the field of circuit breakers. Background Art

[0002] A circuit breaker is a common high - voltage switchgear in the power system, used to cut off overload current and short - circuit current. When using a circuit breaker, it needs to be closed to be energized, so as to play roles such as isolation and reclosing. The closing mechanism of a circuit breaker usually consists of an electromagnet, mechanical transmission, springs, etc., and can realize the closing action of the circuit breaker under the action of an external signal.

[0003] When the existing circuit breaker mechanism is in use, when the rotating shaft suspension piece abuts against the limiting shaft, due to excessive impact force, it will produce a rebound. The rebound will cause the mechanism to be in an energized state for a moment during the rebound, which will cause an unsafe state and lead to situations such as circuit breakage, having a greater impact on production equipment. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies existing in the prior art, and provide an anti - rebound mechanism for a circuit breaker.

[0005] An anti - rebound mechanism for a circuit breaker includes a fixing plate. A rotating shaft and a limiting shaft are arranged between the fixing plates. A rotating shaft suspension piece is installed on the rotating shaft. One end of the rotating shaft suspension piece abuts against and is limited by the limiting shaft through a rotating action to make the circuit breaker in a power - off state. An anti - rebound piece is arranged on the rotating shaft suspension piece, and a driving part is arranged on the rotating shaft. After the anti - rebound piece follows the rotating shaft suspension piece to rotate and abut against the limiting shaft, it is driven by the driving part to abut against the limiting shaft, so that the rotating shaft suspension piece cannot rotate back. The existence of the anti - rebound piece eliminates the impact force when the rotating shaft suspension piece contacts the limiting shaft, avoids the rebound phenomenon caused by excessive impact force, and thus improves the stability of the circuit breaker during operation. By driving the anti - rebound piece to abut against the limiting shaft through the driving part, the stable state of the rotating shaft suspension piece during the operation of the circuit breaker is ensured, the instantaneous power - on state during the rebound is avoided, and the safety of use is improved. When the rotating shaft suspension piece impacts the limiting shaft, the anti - rebound piece will also rotate by inertia, but the anti - rebound piece starts to rotate in advance before the rotating shaft suspension piece impacts. To ensure that after the rotating shaft suspension piece impacts, the anti - rebound piece rotates to complete the rotation action and abut against the limiting shaft at a faster speed and a better angle, ensuring that when the rotating shaft suspension piece rebounds, the anti - rebound piece plays a limiting role.

[0006] By effectively preventing rebound, the risk of accidental electric shock caused by rebound is reduced. Especially in industrial applications with high voltage or high current, this design can effectively protect operators and equipment, and improve the safety of the overall working environment.

[0007] Preferably, the driving member includes a mounting plate disposed on the rotating shaft. A limiting bolt extends from the mounting plate. The anti-rebound piece is driven by the limiting bolt to rotate and abut against the limiting shaft, so that the rotating shaft suspension piece cannot rotate back. The direct contact between the limiting bolt and the anti-rebound piece provides an accurate driving method, ensuring that after the rotating shaft suspension piece abuts against the limiting shaft, the anti-rebound piece is driven by the limiting bolt to abut against the limiting shaft, effectively controlling the rotation back of the rotating shaft suspension piece and improving the accuracy of the circuit breaker operation. The design of the driving member enables the anti-rebound piece to stably contact the limiting shaft, preventing the occurrence of the rebound phenomenon, improving the stability of the circuit breaker during operation, and thus enhancing the overall reliability of the system.

[0008] Further, the anti-rebound piece includes a piece body rotatably disposed on the rotating shaft suspension piece. The piece body includes a first state in which it abuts against the limiting bolt and is driven by it to rotate, at this time the rotating shaft suspension piece does not abut against the limiting shaft; it also includes a second state in which it continues to rotate when the rotating shaft suspension piece abuts against the limiting shaft; and a third state in which the piece body abuts against the limiting shaft to prevent the rotating shaft suspension piece from rebounding. By controlling the movement of the rotating shaft suspension piece through the state of the anti-rebound piece, the operation process of the circuit breaker from opening to closing is optimized, reducing unnecessary mechanical impacts and making the whole process smoother and more efficient.

[0009] Further, a driving portion is disposed on one side of the piece body at one end of the limiting bolt. A concave driving groove is formed between the driving portion and the piece body. The anti-rebound piece is driven by the limiting bolt to continue to rotate and abut against the limiting shaft in the first state and switches to the second state. By providing a driving portion on one side of the piece body and forming a concave driving groove with the driving portion at one end of the limiting bolt, the anti-rebound piece can efficiently switch from the first state (abutting against the limiting shaft and allowing the rotating shaft suspension piece to continue to rotate) to the second state (driven by the limiting bolt to abut against the limiting shaft to prevent the rotating shaft suspension piece from rotating back), ensuring the rapidity and accuracy of the conversion process.

[0010] Preferably, the rotating shaft suspension piece includes a limiting arm and a driving arm. A limiting groove is provided on the limiting arm. The limiting groove of the rotating shaft suspension piece abuts against the limiting shaft in the first state to form a limiting connection. By providing a limiting groove on the limiting arm of the rotating shaft suspension piece, an accurate limiting connection can be formed with the limiting shaft in the first state, strengthening the connection stability between the rotating shaft suspension piece and the limiting shaft and improving the overall reliability of the circuit breaker.

[0011] Further, the anti-rebound piece is rotatably mounted at one end of the driving arm close to the rotation center of the rotating shaft suspension piece. Mounting the anti-rebound piece at one end of the driving arm close to the rotation center of the rotating shaft suspension piece helps to optimize the layout of the entire mechanism, reducing the installation space requirement of the entire system. Since the anti-rebound piece is closer to the center of the rotating shaft, it can more directly affect the movement of the rotating shaft and enhance the stability of the entire mechanism.

[0012] The beneficial effects of the present utility model are as follows: The presence of the anti-rebound piece eliminates the impact force when the rotating shaft suspension piece contacts the limiting shaft, avoids the rebound phenomenon caused by excessive impact force, and thus improves the stability of the circuit breaker during operation. By driving the anti-rebound piece to abut against the limiting shaft through the driving member, the stable state of the rotating shaft suspension piece during the operation of the circuit breaker is ensured, the instantaneous power-on state during rebound is avoided, and the safety of use is improved. By effectively preventing rebound, the risk of accidental electric shock caused by rebound is reduced. Especially in industrial applications with high voltage or high current, this design can effectively protect operators and equipment and enhance the safety of the overall working environment. Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present utility model.

[0014] Figure 1 It is a schematic diagram of the main structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the present utility model after removing one side fixing plate;

[0016] Figure 3 It is a schematic diagram of the structure when the rotating shaft suspension piece is not limited by the limiting shaft;

[0017] Figure 4 It is a schematic diagram of the structure when the rotating shaft suspension piece is limited by the limiting shaft;

[0018] Figure 5 It is a schematic diagram of the structure when the rotating shaft suspension piece continues to rotate after being limited by the limiting shaft;

[0019] Figure 6 It is a schematic diagram of the structure when the rotating shaft suspension piece abuts against the limiting shaft to prevent rebound after being limited by the limiting shaft;

[0020] In the figure, 1, fixing plate; 2, rotating shaft; 21, mounting plate; 22, limiting bolt; 3, limiting shaft; 4, rotating shaft suspension piece; 41, limiting arm; 42, driving arm; 43, limiting groove; 5, anti-rebound piece; 51, piece body; 52, driving part; 53, driving groove;. Detailed Embodiment

[0021] To make the purpose, technical solutions and advantages of the present utility model clearer, the following will further describe the present utility model in detail with reference to the drawings.

[0022] It should be noted that all the expressions using "first" and "second" in the embodiments of the present utility model are for distinguishing two entities or parameters with the same name but different identities. It can be seen that "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present utility model. This will not be elaborated one by one in the subsequent embodiments.

[0023] The direction and position terms mentioned in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only with reference to the direction or position of the attached drawings. Therefore, the direction and position terms used are for explaining and understanding the present utility model, rather than a limitation on the protection scope of the present utility model.

[0024] As Figures 1-6 shown, it is an embodiment of an anti - rebound mechanism for a circuit breaker of the present utility model, including a fixing plate 1. A rotating shaft 2 and a limiting shaft 3 are arranged between the fixing plates 1. A rotating - shaft suspension piece 4 is installed on the rotating shaft 2. One end of the rotating - shaft suspension piece 4 abuts against and is limited by the limiting shaft 3 through a rotating action to make the circuit breaker in a power - off state. An anti - rebound piece 5 is arranged on the rotating - shaft suspension piece 4. A driving member is arranged on the rotating shaft 2. After the anti - rebound piece 5 rotates with the rotating - shaft suspension piece 4 to abut against the limiting shaft 3, it is driven by the driving member to abut against the limiting shaft 3, so that the rotating - shaft suspension piece 4 cannot rotate back. The existence of the anti - rebound piece 5 eliminates the impact force when the rotating - shaft suspension piece 4 contacts the limiting shaft 3, avoids the rebound phenomenon caused by too large impact force, and thus improves the stability of the circuit breaker during operation. When the rotating - shaft suspension piece 4 impacts the limiting shaft 3, the anti - rebound piece 5 will also rotate inertia - ally. The anti - rebound piece 5 starts to rotate in advance before the rotating - shaft suspension piece 4 impacts. To ensure that after the rotating - shaft suspension piece 4 impacts, the anti - rebound piece 5 can complete the rotating action at a faster speed and better angle, and ensure that when the rotating - shaft suspension piece 4 rebounds, the anti - rebound piece 5 plays a limiting role.

[0025] By driving the anti - rebound piece 5 to abut against the limiting shaft 3, the stable state of the rotating - shaft suspension piece 4 during the operation of the circuit breaker is ensured, the instantaneous power - on state during rebound is avoided, and the safety of use is improved. By effectively preventing rebound, the risk of accidental electric shock caused by rebound is reduced. Especially in industrial applications with high voltage or high current, this design can effectively protect operators and equipment and enhance the safety of the overall working environment.

[0026] The driving member includes a mounting plate 21 provided on the rotating shaft 2. A limit bolt 22 extends from the mounting plate 21. The anti-rebound piece 5 is driven by the limit bolt 22 to rotate and abut against the limit shaft 3, so that the rotating shaft suspension piece 4 cannot rotate back. The limit bolt 22 is in direct contact with the anti-rebound piece 5, providing an accurate driving method. After the rotating shaft suspension piece 4 abuts against the limit shaft 3, the anti-rebound piece 5 is driven by the limit bolt 22 to abut against the limit shaft 3, effectively controlling the rotation back of the rotating shaft suspension piece 4 and improving the accuracy of the circuit breaker operation. The design of the driving member enables the anti-rebound piece 5 to stably contact the limit shaft 3, preventing the occurrence of the rebound phenomenon, improving the stability of the circuit breaker during operation, and thus enhancing the overall reliability of the system.

[0027] The anti-rebound piece 5 includes a piece body 51 rotatably provided on the rotating shaft suspension piece 4. The piece body 51 includes a first state in which the rotating shaft suspension piece 4 abuts against the limit shaft 3 and continues to rotate, and a second state in which the piece body 51 is driven by the limit bolt 22 to abut against the limit shaft 3 to prevent the rotating shaft suspension piece 4 from rebounding. By changing the state of the anti-rebound piece 5 to control the movement of the rotating shaft suspension piece 4, the operation process of the circuit breaker from open to closed is optimized, unnecessary mechanical impacts are reduced, and the whole process becomes smoother and more efficient.

[0028] The anti-rebound piece 5 includes a piece body 51 rotatably provided on the rotating shaft suspension piece 4. The piece body 51 includes a first state in which it abuts against the limit bolt 22 and is driven by it to rotate. At this time, the rotating shaft suspension piece 4 does not abut against the limit shaft 3; it also includes a second state in which the rotating shaft suspension piece 4 continues to rotate when it abuts against the limit shaft 3; and a third state in which the piece body 51 abuts against the limit shaft 3 to prevent the rotating shaft suspension piece 4 from rebounding. By providing a driving portion 52 on one side of the piece body 51 to form a concave driving groove 53 with the driving portion 52 at one end of the limit bolt 22, the anti-rebound piece 5 can efficiently switch from the first state (abutting against the limit shaft 3, allowing the rotating shaft suspension piece 4 to continue rotating) to the second state (driven by the limit bolt 22 to abut against the limit shaft 3, preventing the rotating shaft suspension piece 4 from rotating back), ensuring the rapidity and accuracy of the switching process.

[0029] During the process of switching from the first state to the second state, the rotating shaft suspension piece 4 abuts against the limit shaft 3 and drives the anti-rebound piece 5 to continue rotating by inertia. On the basis that the anti-rebound piece 5 is driven in advance by the limit bolt, the anti-rebound piece 5 can complete the rotation action at a faster speed and better angle, abut against the limit shaft 3 in advance, and prevent the rotating shaft suspension piece 4 from rebounding under force.

[0030] The rotating shaft suspension piece 4 includes a limiting arm 41 and a driving arm 42. A limiting groove 43 is provided on the limiting arm 41. The limiting groove 43 of the rotating shaft suspension piece 4 abuts against the limiting shaft 3 in the first state to form a limiting connection. By providing the limiting groove 43 on the limiting arm 41 of the rotating shaft suspension piece 4, an accurate limiting connection can be formed with the limiting shaft 3 in the first state, strengthening the connection stability between the rotating shaft suspension piece 4 and the limiting shaft 3 and improving the overall reliability of the circuit breaker.

[0031] The anti-rebound piece 5 is rotatably installed at one end of the driving arm 42 close to the rotation center of the rotating shaft suspension piece 4. Installing the anti-rebound piece 5 at one end of the driving arm 42 close to the rotation center of the rotating shaft suspension piece 4 helps to optimize the layout of the entire mechanism, reducing the installation space requirement of the entire system. Since the anti-rebound piece 5 is closer to the center of the rotating shaft, it can more directly affect the movement of the rotating shaft, enhancing the stability of the entire mechanism.

[0032] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

[0033] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention aims to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A circuit breaker anti-rebound mechanism, characterized in that: It comprises a fixed plate, between which a rotating shaft and a limiting shaft are arranged, a rotating shaft suspension piece is installed on the rotating shaft, one end of the rotating shaft suspension piece is limited by a rotating action against the limiting shaft so that the circuit breaker is in a power-off state, an anti-rebound sheet is arranged on the rotating shaft suspension piece, and a driving member is arranged on the rotating shaft, and the anti-rebound sheet follows the rotating shaft suspension piece to rotate until it abuts against the limiting shaft and then is driven by the driving member to abut against the limiting shaft so that the rotating shaft suspension piece cannot rotate.

2. The circuit breaker anti-rebound mechanism according to claim 1, characterized in that: The driving member comprises a mounting plate arranged on the rotating shaft, a limiting bolt extends from the mounting plate, and the anti-rebound sheet is driven to rotate by the limiting bolt and abuts against the limiting shaft so that the rotating shaft suspension sheet cannot rotate.

3. The circuit breaker anti-rebound mechanism according to claim 2, characterized in that: The anti-rebound sheet includes a sheet body rotatably arranged on the rotating shaft suspension sheet, and the sheet body includes a first state in which the limiting bolt is abutted against the limiting bolt to be driven to rotate, and at this time, the rotating shaft suspension sheet is not abutted against the limiting shaft; It also includes a second state in which the shaft suspension piece continues to rotate when it abuts against the limit shaft; The third state is that the sheet body abuts against the limiting shaft to prevent the shaft suspension sheet from rebounding.

4. The circuit breaker anti-rebound mechanism according to claim 3, characterized in that: One side of the sheet body is provided with a driving part located at one end of the limiting bolt, and a concave driving groove is formed between the driving part and the sheet body. The anti-rebound sheet is driven by the limiting bolt to continue to rotate in the first state and abut against the limiting shaft to switch to the second state.

5. The circuit breaker anti-rebound mechanism according to claim 1 or 2, characterized in that: The rotating shaft suspension comprises a limiting arm and a driving arm. The limiting arm is provided with a limiting groove. The limiting groove of the rotating shaft suspension abuts against the limiting shaft to form a limiting connection in a first state.

6. The circuit breaker anti-rebound mechanism according to claim 5, characterized in that: The anti-rebound sheet is rotatably mounted on one end of the driving arm close to the rotation center of the rotating shaft suspension sheet.

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