A circuit breaker anti-reclosing interlocking mechanism

Abstract

The present invention relates to an interlocking mechanism for preventing reclosing of a circuit breaker, and this interlocking mechanism for preventing reclosing of the circuit breaker is used in the spring operating device of a high-voltage circuit breaker. The above-mentioned spring operating device realizes the closing operation by rotating the closing half shaft to make the output crank arm rotate around its assembly position along a fixed axis. This interlocking mechanism for preventing reclosing of the circuit breaker includes an interlocking crank arm, an interlocking plate, a limit top plate and a limit rotating plate. The interlocking crank arm is coaxially assembled with the above-mentioned output crank arm and is arranged to rotate synchronously. The limit rotating plate is assembled on the above-mentioned closing half shaft and is arranged to rotate synchronously with the above-mentioned closing rod. The limit top plate is assembled between the interlocking crank arm and the closing half shaft, and the limit top plate is connected to the interlocking crank arm through the interlocking plate and is arranged to move along with the interlocking crank arm. In the present invention, when the spring operating device is in the closing state, the limit top plate directly holds the limit rotating plate, so the structural stability is better and problems such as failure of preventing reclosing are not likely to occur.

Description

Technical Field

[0001] The present invention relates to the field of high-voltage electrical switchgear, and particularly to an interlocking mechanism for preventing reclosing of a circuit breaker. Background Art

[0002] Outdoor pole-mounted vacuum circuit breakers are important switching elements in the grid overhead lines, playing the role of protecting and controlling the grid lines. The spring operating device is one of the most common forms in the operating structure of high-voltage vacuum circuit breakers. It has the characteristics of flexible design, easy to meet the requirements of power matching, convenient maintenance, etc., and thus is widely used.

[0003] Currently, the commonly used reclosing prevention structures on the market are too simple. For example, the reclosing interlocking device disclosed in the Chinese utility model patent with the authorization announcement number CN206864348U and so on often have problems such as spring deformation and assembly errors resulting in the failure of reclosing prevention. Summary of the Invention

[0004] The present invention provides an interlocking mechanism for preventing reclosing of a circuit breaker to solve the problems of poor stability and easy failure of most existing reclosing prevention structures.

[0005] The present invention adopts the following technical solutions:

[0006] An interlocking mechanism for preventing reclosing of a circuit breaker, which is used in the spring operating device of a high-voltage circuit breaker. The above spring operating device realizes the closing operation by the rotation of the closing half shaft to control the output crank arm to rotate about its assembly position. The interlocking mechanism for preventing reclosing of the circuit breaker includes an interlocking crank arm, an interlocking plate, a limit top plate and a limit rotating plate. The interlocking crank arm is coaxially assembled with the above output crank arm and is arranged to rotate synchronously. The head end of the limit rotating plate is fixedly assembled on the above closing half shaft. The limit top plate is assembled between the interlocking crank arm and the closing half shaft. The limit top plate is connected to the interlocking crank arm through the interlocking plate and is arranged to move with the interlocking crank arm. When the spring operating device is in the closing state, the above limit top plate is adjacent to the above limit rotating plate to limit the movement of the limit rotating plate in the closing rotation direction of the closing half shaft. When the spring operating device is in the opening state, the limit top plate is driven by the above interlocking crank arm to separate from the limit rotating plate.

[0007] From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

[0008] When the spring operating device is in the closing state, the present invention directly holds the limiting rotating plate with the limiting top plate, thereby restricting the rotation of the closing half shaft when it is driven to have a rotation tendency. In particular, the relatively independently assembled limiting top plate structure is combined with the interlocking toggle arm structure for driving its movement. The assembly of the limiting top plate structure has little mutual influence on other structures of the spring operating device and has a large adjustment space. This structure has a large tolerance for product assembly errors and a large adjustable space during the assembly and maintenance processes. Moreover, by increasing the holding surface of the limiting top plate against the limiting rotating plate, this error tolerance can be even greater, that is, the anti-reclosing interlocking mechanism of the circuit breaker of the present invention has better structural stability and is not prone to problems such as anti-reclosing failure.

[0009] Furthermore:

[0010] An anti-reclosing interlocking mechanism of a circuit breaker further includes a top plate mounting shaft, and the top plate mounting shaft is fixedly arranged inside the above-mentioned spring operating device. The head end of the above-mentioned limiting top plate is pivotally mounted on the above-mentioned top plate mounting shaft, and the tail end of the limiting top plate is assembled on the above-mentioned interlocking plate.

[0011] The head end of the above-mentioned interlocking toggle arm is coaxially assembled with the above-mentioned output toggle arm, and the tail end of the interlocking toggle arm is assembled on the above-mentioned interlocking plate. The interlocking plate is provided with a guiding groove, and the tail ends of the interlocking toggle arm and the above-mentioned limiting top plate are assembled on the interlocking plate so as to be movable towards and away from each other along the guiding groove.

[0012] The above-mentioned interlocking plate is further provided with a pin hole, and both the pin hole and the guiding groove penetrate the interlocking plate along the thickness direction of the interlocking plate, and the guiding groove extends along the length direction of the interlocking plate. A rotating pin is attached to the tail end of the above-mentioned limiting top plate, and the rotating pin is inserted into the above-mentioned pin hole. A guiding pin is attached to the tail end of the above-mentioned interlocking toggle arm, and the guiding pin is movably inserted into the guiding groove along the guiding groove.

[0013] An anti-reclosing interlocking mechanism of a circuit breaker further includes an interlocking reset torsion spring, and the two torsion rods of the interlocking reset torsion spring are respectively adjacent to the above-mentioned guiding pin and the above-mentioned rotating pin.

[0014] A limiting portion is attached to the above-mentioned limiting rotating plate, and the limiting portion is arranged at the head end of the limiting rotating plate. The limiting portion is in a notch-shaped structure facing the position where the limiting top plate is located, and the geometric shape of the notch of the limiting portion is matched with the geometric shape of the end face of the limiting top plate.

[0015] When the above-mentioned spring operating device is in the closing state, the above-mentioned limiting top plate and the above-mentioned limiting rotating plate are adjacently arranged at the above-mentioned limiting portion. When the spring operating device is in the closing state, the limiting portion is in a right-angle notch-shaped structure with the opening facing the limiting top plate, and the end of the limiting top plate adjacent to the limiting portion is in a right-angle structure with both sides respectively adjacent to the two side faces of the right-angle notch-shaped structure of the limiting portion.

[0016] The end of the limit rotating plate to the position of the limit part presents a smoothly transitioned curved surface structure. When the spring operating device is in the closed state, the smoothly transitioned curved surface structure is arranged on one side of the limit rotating plate toward the position of the interlocking crank arm.

[0017] The above-mentioned closing half-shaft is attached with a closing rod, and the head end of the closing rod is fixedly assembled on the above-mentioned closing half-shaft. The above-mentioned spring operating device also includes a closing release and a manual closing and opening assembly. The closing release and the manual closing and opening assembly are respectively used to electrically control and manually drive the above-mentioned closing half-shaft to rotate. The above-mentioned manual closing and opening assembly is arranged adjacent to the tail end of the above-mentioned limit rotating plate. The spring operating device electrically controls the closing release through a through hole to hit the tail end of the closing rod to drive the closing half-shaft to rotate. The manual closing and opening assembly includes a manual handle, a manual crank arm and a closing push rod. The manual handle and the manual crank arm are coaxially assembled and synchronously rotated. The closing push rod is arranged at the position of the manual crank arm adjacent to the position of the limit rotating plate. The manual handle is used to drive the closing push rod to move by driving the manual crank arm to rotate. The closing push rod drives the closing half-shaft to rotate by pushing the limit rotating plate through the movement of the closing push rod itself.

[0018] The length direction of the closing rod and the length direction of the limit rotating plate are arranged perpendicular to each other. When the spring operating device is in the closing state and the limit top plate restricts the rotation of the limit rotating plate, the closing rod is extended in the direction away from the position of the interlocking plate, and the limit rotating plate is extended in the direction away from the position of the limit top plate. The closing release and the manual closing and opening assembly are respectively arranged on both sides of the closing rod.

[0019] From the above description of the further scheme structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages:

[0020] First, the top plate mounting shaft of the present invention is used to assemble the limit top plate, that is, the assembly of the limit top plate is further independent, which reduces the impact of the overall assembly error of the spring operating device on the circuit breaker anti-reclosing interlocking mechanism. In addition, the top plate mounting shaft assembling the limit top plate structure can improve the support strength of the limit top plate on the limit rotating plate, which is conducive to preventing the reclosing failure.

[0021] Secondly, after the spring operating device is closed, the resetting of the closing half-shaft may be somewhat delayed relative to the resetting of the output crank arm. However, the present invention can avoid the damage or even destruction of the circuit breaker anti-reclosing interlocking mechanism and even the spring operating device structure caused by the above lag through the structure that the tail end of the interlocking crank arm and the tail end of the limit top plate can be moved toward and away from each other along the guide groove, thereby improving the stability of the product. Specifically, the present invention also realizes and strengthens the above effect through structures such as pin holes, guide pins, turn pins, and interlocking reset torsion springs.

[0022] Thirdly, through the arrangement of the limiting part, the present invention improves the holding stability of the limiting top plate against the limiting rotating plate. And as long as the limiting top plate does not disengage from the limiting part, the anti-autoreclosure will not be achieved, further improving the tolerance of assembly errors. Moreover, during the processes of product assembly, maintenance, etc., it can be directly seen whether the structure is properly assembled from the position where the end of the limiting top plate falls into the limiting part, which is convenient for the assembly and maintenance of the product.

[0023] Fourthly, the present invention drives the closing half shaft by respectively operating the closing rod and the limiting rotating plate through the closing release and the manual closing and opening assembly, leaving an operating space where the two control methods of electric control and manual control for closing do not interfere with each other, and optimizing the internal structure distribution of the spring operating device. And this structure realizes the manual closing operation by expanding the function of the limiting rotating plate, simplifies the internal structure of the spring operating device while retaining all required functions, that is, the structural setting of the anti-autoreclosure interlocking mechanism of the circuit breaker is more scientific and simple, reduces the setting cost of this structure, simplifies the production, assembly, maintenance, etc. of the spring operating device, and improves the market competitiveness of the product.

[0024] Fifthly, through the perpendicularity of the length direction of the above-mentioned closing rod and the length direction of the above-mentioned limiting rotating plate, as well as their specific extending directions, the setting positions of the manual closing and opening assembly and the closing release, etc., the present invention further optimizes the internal structure arrangement of the spring operating device, leaving enough working space for each structure and each structure being relatively independent, simplifies the production, assembly, maintenance, etc. of the spring operating device, and improves the market competitiveness of the product. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the anti-autoreclosure interlocking mechanism of the circuit breaker of the present invention applied to the spring operating device and the spring operating device being in the closing state in the first embodiment.

[0026] Figure 2 It is a front view structural diagram of the anti-autoreclosure interlocking mechanism of the circuit breaker of the present invention applied to the spring operating device and the spring operating device being in the opening state in the first embodiment.

[0027] Figure 3 It is a schematic structural diagram of the anti-autoreclosure interlocking mechanism of the circuit breaker of the present invention applied to the spring operating device and the spring operating device being in the closing state in the second embodiment. Detailed Embodiments

[0028] The following describes the detailed embodiments of the present invention with reference to the drawings.

[0029] Refer to Figure 1 、 Figure 2 、 Figure 3, a circuit breaker anti-reclosing interlocking mechanism, which is used in the spring operating device of a high-voltage circuit breaker. The above spring operating device rotates the closing half shaft 73 to make the output crank arm 74 rotate about its assembly position to achieve the closing operation. The spring operating device realizes the electric control and manual drive of the rotation of the closing half shaft 73 through the closing release 71 and the manual closing and opening assembly 72 respectively. A closing rod 731 is attached to the above closing half shaft 73, and the head end of the closing rod 731 is fixedly assembled on the closing half shaft 73. When the spring operating device is electrically controlled to drive the closing half shaft 73 to rotate, it drives the closing half shaft 73 to rotate by hitting the closing rod 731 through the closing release 71. After the closing is completed, the closing rod 731 is reset under the drive of the closing return torsion spring 75.

[0030] Continue to refer to Figure 1 , Figure 2 , Figure 3 , the above spring operating device involving the closing release 71, the manual closing and opening assembly 72, the closing half shaft 73, the closing rod 731, the output crank arm 74 and the closing return torsion spring 75 has been widely used in existing products. The present invention only relates to the anti-reclosing interlocking mechanism of this circuit breaker, and the specific content unrelated to the anti-reclosing interlocking mechanism of the spring operating device and the circuit breaker will not be elaborated here. For the convenience of describing the specific structure of the anti-reclosing interlocking mechanism of this circuit breaker, the above manual closing and opening assembly 72 is not involved in the following Embodiment 1, and the difference between Embodiment 2 and Embodiment 1 is only that Embodiment 2 adds a description of the manual closing and opening assembly 72 compared with Embodiment 1.

[0031] Embodiment 1:

[0032] Refer to Figure 1 , Figure 2, the reclosing prevention interlock mechanism of the circuit breaker includes an interlock crank arm 1, an interlock plate 2, a limit top plate 3, a top plate mounting shaft 4, a limit rotating plate 5, and an interlock return torsion spring 6. The interlock crank arm 1 is coaxially assembled with the above-mentioned output crank arm 74 and is arranged to rotate synchronously. The top plate mounting shaft 4 is fixedly arranged in the spring operating device, that is, the top plate mounting shaft 4 is fixedly arranged on the frame of the spring operating device at the application position of the reclosing prevention interlock mechanism of the circuit breaker. The first end of the limit rotating plate 5 is fixedly assembled on the above-mentioned closing half shaft 73. Since both the limit rotating plate 5 and the above-mentioned closing rod 731 are fixedly assembled on the closing half shaft 73 through their respective first ends, that is, both rotate around the closing half shaft 73 and rotate synchronously with the rotation of the closing half shaft 73 itself. The limit top plate 3 is assembled between the interlock crank arm 1 and the closing half shaft 73 through the top plate mounting shaft 4, and the limit top plate 3 is connected to the interlock crank arm 1 through the interlock plate 2 and moves along with the interlock crank arm 1. When the spring operating device is in the closing state, the above-mentioned limit top plate 3 is adjacent to the above-mentioned limit rotating plate 5 to limit the movement of the limit rotating plate 5 in the closing rotation direction of the closing half shaft 73. The closing rotation direction of the closing half shaft 73 is the rotation direction in which the closing rod 731 drives the closing half shaft 73 to rotate after being impacted by the closing release 71. When the spring operating device is in the opening state, the limit top plate 3 is driven by the above-mentioned interlock crank arm 1 to separate from the limit rotating plate 5. Specifically, a top plate mounting through hole is provided at the first end of the above-mentioned limit top plate 3. The top plate mounting through hole is sleeved on the end of the top plate mounting shaft 4 and is fixed by a mounting buckle 31. The limit top plate 3 can pivotally rotate around the top plate mounting shaft 4 with the top plate mounting shaft 4 as the axis.

[0033] Continue to refer to Figure 1 , Figure 2, the tail end of the above-mentioned limit top plate 3 is assembled to the above-mentioned interlock plate 2. The interlock crank arm 1 is coaxially assembled with the output crank arm 74 through its head end, and the tail end of the interlock crank arm 1 is assembled to the above-mentioned interlock plate 2. The interlock plate 2 is provided with a guide groove 21, and the tail ends of the interlock crank arm 1 and the limit top plate 3 are assembled to the interlock plate 2 in a manner that can move towards and away from each other along the guide groove 21. This movement towards and away from each other can be achieved as long as at least one of the assembly structures of the tail end of the interlock crank arm 1 and the tail end of the limit top plate 3 can move along the guide groove 21. Since the installation position of the interlock plate 2 is at the part where the limit top plate 3 holds and limits the rotation of the limit rotating plate 5, it is preferably to adopt the method that the assembly position of the tail end of the interlock crank arm 1 can move and be assembled along the guide groove 21. Since the moving direction of the limit top plate 3 driven by the interlock crank arm 1 is a fixed-axis rotation, that is, there needs to be a certain relative rotation space between the limit top plate 3 and the interlock plate 2. For this reason, this specific implementation method is achieved by pin shaft assembly. Specifically, the above-mentioned interlock plate 2 is further provided with a pin hole, and both the pin hole and the above-mentioned guide groove 21 penetrate through the interlock plate 2 along the thickness direction of the interlock plate 2, and the guide groove 21 extends along the length direction of the interlock plate 2. The tail end of the above-mentioned limit top plate 3 is attached with a rotation pin 32, and the rotation pin 32 is inserted into the above-mentioned pin hole. The tail end of the above-mentioned interlock crank arm 1 is attached with a guide pin 11, and the guide pin 11 is movably inserted into the guide groove 21 along the guide groove 21. The two torsion rods of the above-mentioned interlock return torsion spring 6 are respectively adjacent to the above-mentioned guide pin 11 and the above-mentioned rotation pin 32.

[0034] Continue to refer to Figure 1 , Figure 2 , the above-mentioned limit rotating plate 5 is attached with a limit part 51, and the limit part 51 is in a notch-shaped structure facing the position where the limit top plate 3 is located. The geometric shape of the limit part 51 is matched with the geometric shape of the end face of the limit top plate 3, that is, after the limit top plate 3 falls into the limit part 51, the geometric shapes of the two are equivalent, and the rotation of the limit rotating plate 5 can be more firmly restricted. When the above-mentioned spring operating device is in the closing state, the above-mentioned limit top plate 3 and the above-mentioned limit rotating plate 5 are adjacently arranged at the limit part 51. Specifically, when the spring operating device is in the closing state, the limit part 51 is in a right-angle notch-shaped structure with the opening facing the limit top plate 3, and the end of the limit top plate 3 adjacent to the limit part 51 is in a right-angle structure with both sides respectively adjacent to the two side faces of the right-angle notch-shaped structure of the limit part 51.

[0035] Continue to refer to Figure 1 , Figure 2, the end of the above-mentioned limit rotating plate 5 to the position where the above-mentioned limiting part 51 is located has a smooth transition curved surface structure. When the above-mentioned spring operating device is in the closing state, this smooth transition curved surface structure is arranged on the side of the limit rotating plate 5 facing the position where the interlocking crank arm 1 is located. The end of the right-angle structure cooperating with the right-angle notch-shaped limiting part 51 can greatly improve the holding strength of the limit top plate 3 holding the limit rotating plate 5. The length direction of the above-mentioned closing rod 731 is perpendicular to the length direction of the above-mentioned limit rotating plate 5. When the above-mentioned spring operating device is in the closing state and the above-mentioned limit top plate 3 restricts the rotation of the limit rotating plate 5, the closing rod 731 extends in the direction away from the position where the above-mentioned interlocking plate 2 is located, and the limit rotating plate 5 extends in the direction away from the position where the limit top plate 3 is located.

[0036] Embodiment 2:

[0037] Reference Figure 3 , the difference between this embodiment and Embodiment 1 is only that this embodiment adds a description of the manual closing and opening component 72. In actual applications, most spring operating devices also have this manual closing and opening component 72, and Embodiment 1 only omits it for the convenience of describing the specific structure of the circuit breaker anti-reclosing interlocking mechanism. Specifically:

[0038] Reference Figure 3 , the above-mentioned closing release 71 and the above-mentioned manual closing and opening component 72 are respectively arranged on both sides of the above-mentioned closing rod 731. The manual closing and opening component 72 is arranged adjacent to the end of the above-mentioned limit rotating plate 5. The manual closing and opening component 72 includes a manual handle 721, a manual crank arm 722, and a closing push rod 723. The manual handle 721 and the manual crank arm 722 are coaxially assembled and rotate synchronously. The closing push rod 723 is arranged at the part of the manual crank arm 722 adjacent to the limit rotating plate 5. The manual handle 721 is used to drive the closing push rod 723 to move by driving the manual crank arm 722 to rotate. The closing push rod 723 drives the closing half shaft 73 to rotate by pushing the limit rotating plate 5 through its own movement. The closing push rod 723 is adjacent to the side surface of the limit rotating plate 5 and drives the closing half shaft 73 to rotate by pushing the side surface of the limit rotating plate 5. The side surface of the limit rotating plate 5 pushed by the closing push rod 723 is the side surface of the limit rotating plate 5 on the side away from the side where its smooth transition curved surface structure is located.

[0039] Continue to refer to Figure 3, the specific structure of the above-mentioned manual closing and opening assembly 72 only differs from the manual closing and opening assembly 72 commonly used in the prior art in the field in that in the prior art, the closing half shaft 73 cooperates with a push plate that rotates synchronously with it, and the push plate is driven by the closing push rod 723. In this embodiment, the closing push rod 723 directly pushes the limit rotating plate 5, thus simplifying the structure of the push plate. Since the strength of the user when turning the manual handle 721 is uncertain, by directly applying the closing push rod 723 to the limit rotating plate 5, in the event of a reclosing, even if the user turns the manual handle 721 with a relatively large force, when this acting force is transmitted to the limit rotating plate 5, it is directly absorbed by the limit top plate 3 of its limit portion 51. Furthermore, it can prevent the internal structure of the spring operating device from being directly damaged or the failure of preventing reclosing when the user recloses with a relatively large force. Even in the case where the user turns the manual handle 721 with such a large force that it can damage the mechanical structure linked to the manual handle 721, due to the force of the limit top plate 3 pressing against the limit portion 51 to fix the limit rotating plate 5 in the above structure of the present invention, the damage to the mechanical structure can be stopped at the manual closing and opening assembly 72, etc., minimizing the above losses to the lowest level.

[0040] Reference Figure 1 , Figure 2 , Figure 3, during the use of the anti-reclosing interlocking mechanism of a circuit breaker according to the present invention, when the spring operating device is in the closing state, the above-mentioned limit top plate 3 is adjacent to the above-mentioned limit rotating plate 5, that is, the end of the limit top plate 3 abuts against the limiting portion 51. Affected by this abutment, if a reclosing occurs, whether the closing release 71 impacts the closing rod 731 or the closing push rod 723 pushes the limit rotating plate 5, the limit rotating plate 5 is fixed and the closing half shaft 73 will not rotate, thereby aborting the reclosing process. When the spring operating device is controlled to trip in the closing state, the rotation of the output crank 74 drives the interlocking crank 1 to rotate synchronously. The rotation of the interlocking crank 1 pulls the end of the limit top plate 3 through the interlocking plate 2, thereby causing the limit top plate 3 to rotate about the top plate mounting shaft 4, and further causing the end of the limit top plate 3 to disengage from the limiting portion 51, that is, the limit top plate 3 no longer restricts the closing of the spring operating device. When the spring operating device closes after the above-mentioned tripping state, if the reset of the closing half shaft 73 lags behind the reset of the output crank 74, the end face of the limit top plate 3 is adjacent to the above-mentioned smoothly transitioning curved surface structure. Since the guide pin 11 can move along the guide groove 21, this structure will not prevent the movement of the interlocking crank 1, so that the anti-reclosing interlocking mechanism of the circuit breaker and even the spring operating device will not be damaged. The movement of the above-mentioned guide pin 11 along the guide groove 21 will compress the interlocking reset torsion spring 6. Although the end of the limit top plate 3 is adjacent to the smoothly transitioning curved surface structure, due to the setting of the smoothly transitioning curved surface structure, this adjacent relationship will not prevent the reset of the limit rotating plate 5 (that is, it will not prevent the reset of the closing half shaft 73). Therefore, after the limit rotating plate 5 is reset, driven by the interlocking reset torsion spring 6, the end of the limit top plate 3 will fall into the limiting portion 51, restoring the above-mentioned anti-reclosing function.

[0041] The above is only the specific implementation manner of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantive modification made to the present invention using this concept shall fall within the scope of infringement of the protection scope of the present invention.

Claims

1. A circuit breaker anti-reclosing interlocking mechanism, which is used in the spring operating device of a high-voltage circuit breaker; the spring operating device realizes the closing operation by rotating the closing half shaft to control the output crank arm to rotate around its assembly position; it is characterized in that: It includes an interlocking toggle arm, an interlocking plate, a limit top plate and a limit rotating plate. The interlocking toggle arm is coaxially assembled with the output toggle arm and is arranged to rotate synchronously. The head end of the limit rotating plate is fixedly assembled on the closing half shaft. The limit top plate is assembled between the interlocking toggle arm and the closing half shaft. The limit top plate is connected to the interlocking toggle arm through the interlocking plate and is arranged to move along with the interlocking toggle arm. When the spring operating device is in the closing state, the limit top plate is adjacent to the limit rotating plate and is used to limit the movement of the limit rotating plate in the closing rotation direction of the closing half shaft. When the spring operating device is in the opening state, the limit top plate is driven by the interlocking toggle arm and is separated from the limit rotating plate. It also includes a top plate mounting shaft, and the top plate mounting shaft is fixedly arranged in the spring operating device. The head end of the limit top plate is pivotally mounted on the top plate mounting shaft, and the tail end of the limit top plate is assembled on the interlocking plate. The limit rotating plate is provided with a limit portion, and the limit portion is arranged at the head end of the limit rotating plate and is in the shape of a notch structure facing the position where the limit top plate is located. The geometric shape of the notch of the limit portion is matched with the geometric shape of the tail end of the limit top plate.

2. The interlocking mechanism for preventing reclosing of a circuit breaker according to claim 1, characterized in that: The interlocking toggle arm is coaxially assembled with the output toggle arm through its head end, and the tail end of the interlocking toggle arm is assembled on the interlocking plate. The interlocking plate is provided with a guiding groove, and the tail ends of the interlocking toggle arm and the limit top plate are assembled on the interlocking plate so as to be able to move towards and away from each other along the guiding groove.

3. The interlocking mechanism for preventing reclosing of a circuit breaker according to claim 2, wherein: The interlocking plate is further provided with a pin hole, and both the pin hole and the guiding groove penetrate through the interlocking plate along the thickness direction of the interlocking plate. The guiding groove extends along the length direction of the interlocking plate. A rotating pin is attached to the tail end of the limit top plate, and the rotating pin is inserted into the pin hole. A guiding pin is attached to the tail end of the interlocking toggle arm, and the guiding pin is movably inserted into the guiding groove along the guiding groove.

4. The interlocking mechanism for preventing reclosing of a circuit breaker according to claim 3, characterized in that: It also includes an interlocking reset torsion spring, and the two torsion rods of the interlocking reset torsion spring are respectively adjacent to the guiding pin and the rotating pin.

5. A circuit breaker anti - reclosing interlocking mechanism according to claim 1, characterized in that: When the spring operating device is in the closing state, the limit top plate and the limit rotating plate are adjacent to each other at the limit portion. When the spring operating device is in the closing state, the limit portion is in the shape of a right-angled notch with the opening facing the limit top plate, and the end of the limit top plate adjacent to the limit portion is in a right-angled structure with both sides respectively adjacent to the two side surfaces of the right-angled notch structure of the limit portion.

6. A circuit breaker anti-reclosing interlock mechanism according to claim 1, characterized in that: The end of the tail end of the limit rotating plate to the position where the limit portion is located is in a smoothly transitioning curved surface structure. When the spring operating device is in the closing state, this smoothly transitioning curved surface structure is arranged on the side of the limit rotating plate facing the position where the interlocking toggle arm is located.

7. A circuit breaker anti-reclosing interlocking mechanism according to any one of claims 1 to 6, characterized in that: A closing half shaft is attached with a closing rod, and the head end of the closing rod is fixedly assembled on the closing half shaft; the spring operating device further includes a closing release and a manual closing and opening assembly, and the closing release and the manual closing and opening assembly are respectively used for electrically controlling and manually driving the closing half shaft to rotate; the manual closing and opening assembly is arranged adjacent to the tail end of the limiting rotating plate; the spring operating device electrically controls the closing release to impact the tail end of the closing rod to drive the closing half shaft to rotate; the manual closing and opening assembly includes a manual handle, a manual crank arm and a closing push rod, the manual handle and the manual crank arm are coaxially assembled and synchronously rotated, the closing push rod is arranged at a position of the manual crank arm adjacent to the limiting rotating plate, the manual handle is used for driving the closing push rod to move by driving the manual crank arm to rotate, and the closing push rod drives the closing half shaft to rotate by pushing the limiting rotating plate through the movement of the closing push rod itself.

8. A circuit breaker anti-automatic reclosing interlocking mechanism according to claim 7, characterized in that: The length direction of the closing rod is perpendicular to the length direction of the limiting rotating plate. When the spring operating device is in the closing state and the limiting top plate restricts the rotation of the limiting rotating plate, the closing rod extends in a direction away from the position where the interlocking plate is located, the limiting rotating plate extends in a direction away from the position where the limiting top plate is located, and the closing release and the manual closing and opening assembly are respectively arranged on both sides of the closing rod.

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