Circuit breaker operating mechanism

Abstract

The utility model discloses a circuit breaker operating mechanism in the technical field of medium-voltage circuit breakers, which comprises a circuit breaker body, a knife switch is arranged on the circuit breaker body, a mounting seat is fixedly connected onto the circuit breaker body, an avoiding groove is arranged on the mounting seat, the avoiding groove is arranged corresponding to the travel of the knife switch, and the knife switch is arranged on the mounting seat. A receding groove is formed in the mounting base, a connecting block is arranged in the receding groove and matched with the knife switch, a limiting assembly is arranged between the mounting base and the connecting block and used for limiting movement of the connecting block, and a transmission part is arranged in the limiting assembly. According to the utility model, the limiting pin is matched with the limiting hole in the shifting block to limit the movement of the knife switch, and when the operating rod reaches a limit position, the limit of the limiting pin needs to be removed, and the knife switch can further move, so that the risk of mistaken touch is reduced, and the risk possibly caused by accidental movement of the knife switch is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of medium voltage circuit breaker, especially to a circuit breaker operating mechanism. BACKGROUND

[0002] The medium voltage circuit breaker is the main switch equipment for connecting and breaking the circuit and protecting the circuit in the power system, is generally used in the voltage range of 1kV to 35kV, has perfect arc extinguishing device, can connect and break the load current in normal operation, and the operating mechanism of the medium voltage circuit breaker is the mechanical operating device for operating the circuit breaker independently of the circuit breaker body, and the main task is to make the circuit breaker accurately operate, so the working performance and quality of the operating mechanism play an extremely important role in the working performance and reliability of the high voltage circuit breaker, wherein the circuit breaker operating mechanism includes manual operating mechanism, electromagnetic operating mechanism, spring operating mechanism and permanent magnet operating mechanism, and the manual operating mechanism has the advantages of simple structure, low price, no need of external power supply and wide practicability, and has been widely applied in multiple fields.

[0003] However, the prior art has some problems: in use, the technical level of the operator is uneven, and the use of the operating mechanism is not familiar or improper operation, which may cause the occurrence of false touch, in addition, in the harsh environmental conditions (such as high temperature, humidity, dust flying, etc.), the performance of the manual operating mechanism may be affected, thereby increasing the risk of false touch. Therefore, we propose a circuit breaker operating mechanism. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the utility model provides a circuit breaker operating mechanism, which is matched by limiting the movement of the knife switch through the limiting pin and the limiting hole on the push block, and the limiting pin needs to be removed when the operating rod reaches the limit position to further move, thereby reducing the risk of false touch.

[0005] The utility model discloses a kind of circuit breaker operating mechanisms, including circuit breaker body, limiting pin is set on the circuit breaker body, the circuit breaker body is fixedly connected with mounting seat, the mounting seat is equipped with avoiding slot, the avoiding slot is correspondingly set with the stroke of knife switch, connection block is set in the avoiding slot, the connection block is cooperatively arranged with knife switch, limiting component is arranged between the mounting seat and connection block, the limiting component is used to limit connection block movement, transmission part is arranged in the limiting component.

[0006] Optionally, the mounting seat is equipped with sliding slot, the sliding slot is communicated with avoiding slot, the mounting seat is provided with bending plate, the bending plate is arranged at right angle with mounting seat, and the bending plate and mounting seat are both provided with lug.

[0007] Optionally, the connecting block comprises a connecting plate, a fixing frame is arranged on the connecting plate, the fixing frame is arranged correspondingly to the knife switch, a pushing block is fixedly connected to the connecting plate, the pushing block is in sliding connection with the sliding groove, a limiting hole is arranged on the pushing block, and a guide groove is arranged on the pushing block.

[0008] Optionally, the limiting assembly comprises a fixing seat, the fixing seat is fixedly connected to the mounting seat, a limiting pin is in sliding connection with the fixing seat, one end of the limiting pin is in a half-sphere shape, the limiting pin is arranged correspondingly to the limiting hole, the limiting pin is inserted into the limiting hole, a first spring is arranged in the fixing seat, one end of the first spring is fixedly connected to the limiting pin, and the other end of the first spring is fixedly connected to the fixing seat.

[0009] Optionally, a connecting rod is fixedly connected to the limiting pin, one end of the connecting rod is provided with a telescopic rod, the telescopic rod is inserted into the fixing seat, the inside of the fixing seat is provided with a transmission member, and the transmission member is used for jacking up the telescopic rod.

[0010] Optionally, the transmission member comprises a driving wheel and a driven wheel in engagement, the driving wheel and the driven wheel are both in rotary connection with the fixing seat, a button is threadedly connected to the driving wheel, the lower end of the button is provided with a second spring, a jacking pin is threadedly connected to the driven wheel, and the jacking pin is in contact with the telescopic rod.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The limiting pin and the limiting hole on the pushing block are matched to limit the movement of the knife switch, when the operating rod reaches the limit position, the limiting pin needs to be released to further move, thereby reducing the risk of accidental touch and avoiding the risk caused by accidental movement of the knife switch.

[0013] 2. The transmission member is arranged, the button is pressed during use, the button drives the driving wheel to rotate through threaded transmission and compresses the second spring, the driving wheel drives the driven wheel to rotate, so that the jacking pin jacks up the telescopic rod, the limiting pin is released from the fixing seat, the operation is simple, and after use, the second spring makes the button jack up through the elastic force, the driving wheel is reversed to reset. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creating labor.

[0015] Figure 1 is a schematic diagram of the overall structure provided by the utility model;

[0016] Figure 2 is a schematic diagram of the mounting seat structure provided by the utility model;

[0017] Figure 3 is a schematic diagram of the connecting block structure provided by the utility model;

[0018] Figure 4 is a schematic diagram of the limiting assembly provided by the utility model;

[0019] Figure 5 is a schematic diagram of the transmission member provided by the utility model;

[0020] Figure 6 is a schematic diagram of the button provided by the utility model.

[0021] In the figure: 1, circuit breaker body; 11, knife switch; 2, mounting seat; 21, avoiding groove; 22, sliding groove; 23, bent plate; 24, lug; 3, connecting block; 31, connecting plate; 32, fixed frame; 33, push block; 34, limiting hole; 35, guide groove; 4, limiting assembly; 41, fixed seat; 42, limiting pin; 43, first spring; 44, connecting rod; 45, telescopic rod; 5, transmission member; 51, driving wheel; 52, driven wheel; 53, button; 54, second spring; 55, ejector pin. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] As Figures 1 to 6 shown in a kind of circuit breaker operating mechanism, including circuit breaker body 1, circuit breaker body 1 is provided with knife switch 11, circuit breaker body 1 is fixedly connected with mounting seat 2, mounting seat 2 is opened with avoiding groove 21, avoiding groove 21 is set up corresponding with the stroke of knife switch 11, connecting block 3 is set up in avoiding groove 21, connecting block 3 is set up in cooperation with knife switch 11, limiting assembly 4 is set between mounting seat 2 and connecting block 3, limiting assembly 4 is used to limit the movement of connecting block 3, transmission member 5 is set in limiting assembly 4.

[0024] Further, through the cooperation of the avoidance groove 21 on the mounting seat 2 and the connecting block 3, the stability and accuracy of the knife switch 11 in the stroke are ensured. The setting of the limiting assembly 4 effectively limits the movement of the connecting block 3, prevents misoperation, and improves safety. At the same time, the introduction of the transmission part 5 makes the movement of the limiting assembly 4 more reliable. Overall, the operating accuracy and durability of the circuit breaker are enhanced, the maintenance cost is reduced, and the stability and safety of the power system are improved.

[0025] Specifically, the mounting seat 2 is provided with a sliding groove 22, the sliding groove 22 is communicated with the avoidance groove 21, the mounting seat 2 is provided with a bent plate 23, the bent plate 23 is arranged at a right angle with the mounting seat 2, and the bent plate 23 and the mounting seat 2 are both provided with lugs 24.

[0026] Further, the communication of the sliding groove 22 and the avoidance groove 21 enables the connecting block 3 to smoothly move on the specified path, enhancing the flexibility of the mechanism. The bent plate 23 is arranged at a right angle with the mounting seat 2, increasing the stability of the structure, and the setting of the lug 24 provides an additional connection point, making the entire mechanism more secure. These structures collectively improve the reliability and durability of the circuit breaker operating mechanism, ensuring its stable operation in complex environments.

[0027] Specifically, the connecting block 3 includes a connecting plate 31, the connecting plate 31 is provided with a fixed frame 32, the fixed frame 32 is arranged corresponding to the knife switch 11, the connecting plate 31 is fixedly connected with a push block 33, the push block 33 is slidably connected with the sliding groove 22, the push block 33 is provided with a limiting hole 34, and the push block 33 is provided with a guide groove 35.

[0028] Further, the fixed frame 32 on the connecting plate 31 accurately corresponds to the knife switch 11, ensuring the accuracy and stability of the operation. The sliding connection of the push block 33 and the sliding groove 22 enables the connecting block 3 to move smoothly along the predetermined path, enhancing the flexibility of the mechanism. The setting of the limiting hole 34, in cooperation with the limiting assembly 4, effectively limits the movement of the connecting block 3, preventing misoperation. The setting of the guide groove 35 facilitates the sliding between the limiting pin 42 and the push block 33, ensuring the smoothness and reliability of the operation.

[0029] Specifically, the limiting assembly 4 includes a fixed seat 41, the fixed seat 41 is fixedly connected with the mounting seat 2, the fixed seat 41 is slidably connected with a limiting pin 42, one end of the limiting pin 42 is provided in a hemisphere, the limiting pin 42 is arranged corresponding to the limiting hole 34, the limiting pin 42 is inserted into the limiting hole 34, the fixed seat 41 is provided with a first spring 43, one end of the first spring 43 is fixedly connected with the limiting pin 42, and the other end of the first spring 43 is fixedly connected with the fixed seat 41.

[0030] Further, by firmly connecting the fixing seat 41 to the mounting seat 2, the stability and reliability of the limiting assembly 4 are ensured. The hemispherical design of the limiting pin 42 facilitates smooth insertion with the limiting hole 34, effectively limits the movement of the connecting block 3, prevents misoperation, and enhances safety. The arrangement of the first spring 43 enables the limiting pin 42 to automatically reset when not subjected to external force, simplifying the operation process and improving efficiency. Overall, the design of this limiting assembly 4 not only improves the performance of the circuit breaker operating mechanism, but also ensures its stability and safety under various operating conditions.

[0031] Specifically, the limiting pin 42 is fixedly connected with a connecting rod 44, one end of the connecting rod 44 is provided with a telescopic rod 45, the telescopic rod 45 is inserted with the fixing seat 41, the inside of the fixing seat 41 is provided with a transmission part 5, the transmission part 5 is used to lift the telescopic rod 45.

[0032] Specifically, the transmission part 5 includes a driving wheel 51 and a driven wheel 52 in meshing, the driving wheel 51 and the driven wheel 52 are both rotationally connected with the fixing seat 41, the driving wheel 51 is threadedly connected with a button 53, the lower end of the button 53 is provided with a second spring 54, the driven wheel 52 is threadedly connected with a lifting pin 55, the lifting pin 55 is in contact with the telescopic rod 45.

[0033] Further, through the ingenious connection of the connecting rod 44 and the telescopic rod 45, flexible movement and accurate control of the limiting pin 42 are achieved. The introduction of the transmission part 5, especially the precise cooperation of the driving wheel 51, the driven wheel 52, the button 53 and the lifting pin 55, not only enhances the stability and reliability of the system, but also makes the lifting and resetting operations of the limiting pin 42 more smooth and efficient, improves the flexibility and accuracy of the circuit breaker operating mechanism, and effectively reduces the risk of misoperation, providing a strong guarantee for the safe and stable operation of the power system. At the same time, the simple connection and cooperation between the components also facilitate maintenance and maintenance, reducing maintenance costs.

[0034] Working principle: By setting the limiting pin 42 to cooperate with the limiting hole 34 on the dial block 33, the movement of the knife switch 11 is limited. When the operating rod reaches the limit position, the limiting pin 42 needs to be removed to further move, thereby reducing the risk of accidental touch and avoiding the risk that may be caused by accidental movement of the knife switch 11; when in use, press the button 53, the button 53 drives the driving wheel 51 to rotate through threaded transmission and compresses the second spring 54, the driving wheel 51 drives the driven wheel 52 to rotate, thereby lifting the telescopic rod 45 with the lifting pin 55, removing the limiting of the limiting pin 42 and the fixing seat 41, the operation is simple, and after use, the second spring 54 lifts the button 53 through the elastic force, reverses the driving wheel 51, and resets.

[0035] The above description of the embodiments is only used to help understand the method of the utility model and its core idea. It should be pointed out that for ordinary skilled persons in the art, without departing from the principles of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A circuit breaker operating mechanism comprising a circuit breaker body (1), characterized in that: The circuit breaker body (1) is provided with a knife switch (11), the circuit breaker body (1) is fixedly connected with a mounting seat (2), the mounting seat (2) is provided with an avoiding slot (21), the avoiding slot (21) is correspondingly arranged with the stroke of the knife switch (11), the avoiding slot (21) is provided with a connecting block (3), the connecting block (3) is arranged in cooperation with the knife switch (11), the mounting seat (2) and the connecting block (3) are provided with a limiting assembly (4), the limiting assembly (4) is used for limiting the movement of the connecting block (3), and the limiting assembly (4) is provided with a transmission part (5).

2. The circuit breaker operating mechanism of claim 1, wherein: The mounting seat (2) is provided with a sliding groove (22), the sliding groove (22) is communicated with the avoiding slot (21), the mounting seat (2) is provided with a bent plate (23), the bent plate (23) is arranged at a right angle with the mounting seat (2), and the mounting seat (2) and the bent plate (23) are provided with lugs (24).

3. The circuit breaker operating mechanism of claim 1 wherein: The connecting block (3) comprises a connecting plate (31), the connecting plate (31) is provided with a fixed frame (32), the fixed frame (32) is correspondingly arranged with the knife switch (11), the connecting plate (31) is fixedly connected with a pushing block (33), the pushing block (33) is slidably connected with the sliding groove (22), the pushing block (33) is provided with a limiting hole (34), and the pushing block (33) is provided with a guide groove (35).

4. The circuit breaker operating mechanism of claim 1 wherein: The limiting assembly (4) comprises a fixed seat (41), the fixed seat (41) is fixedly connected with the mounting seat (2), the fixed seat (41) is slidably connected with a limiting pin (42), one end of the limiting pin (42) is provided in a hemispherical shape, the limiting pin (42) is correspondingly arranged with the limiting hole (34), the limiting pin (42) is inserted into the limiting hole (34), the fixed seat (41) is provided with a first spring (43), one end of the first spring (43) is fixedly connected with the limiting pin (42), and the other end of the first spring (43) is fixedly connected with the fixed seat (41).

5. The circuit breaker operating mechanism of claim 4 wherein: The limiting pin (42) is fixedly connected with a connecting rod (44), one end of the connecting rod (44) is provided with a telescopic rod (45), the telescopic rod (45) is inserted into the fixed seat (41), the inside of the fixed seat (41) is provided with a transmission part (5), and the transmission part (5) is used for lifting the telescopic rod (45).

6. The circuit breaker operating mechanism according to claim 5, wherein: The transmission part (5) comprises a driving wheel (51) and a driven wheel (52) engaged with each other, the driving wheel (51) and the driven wheel (52) are rotatably connected with the fixed seat (41), the driving wheel (51) is threadedly connected with a button (53), the lower end of the button (53) is provided with a second spring (54), the driven wheel (52) is threadedly connected with a lifting pin (55), and the lifting pin (55) is in contact with the telescopic rod (45).

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