Opening and closing operation assembly

Abstract

The utility model relates to the technical field of circuit breaker testing, in particular to a switching-on and switching-off operation assembly. The switching-on and switching-off operation assembly comprises a driving part and a driven part, the driven part is in sliding connection with the driving part, and an operation space is formed between the driven part and the driving part. The height of the operation space is the opening distance of the opening and closing operation assembly. The height of the operation space can be changed along with sliding of the driving part relative to the driven part, the height of the operation space is H1 when the circuit breaker needs a closing test, the height of the operation space is H2 when the circuit breaker needs an opening test, and H2 is larger than H1. According to the opening and closing operation assembly, the opening distance is small during the closing test of the circuit breaker, so that the influence of the structure of the circuit breaker can be avoided, the opening distance is large during the opening test of the circuit breaker, the requirement of free tripping of the circuit breaker can be met, the phenomenon of slow back buckling is avoided, and the accuracy of the closing and opening test of the circuit breaker is improved.

Description

Technical Field

[0001] The present application relates to the technical field of circuit breaker testing, and in particular to a closing and opening operation component. Background Art

[0002] The circuit breaker closing and opening test is a critical electrical test designed to ensure the reliability and safety of the circuit breaker under various operating conditions. During this test, the circuit breaker operating handle is pushed by the closing and opening operating assembly to close and open the circuit breaker.

[0003] Some existing circuit breakers are limited by their structure and cannot use large-width closing and opening operating components during closing and opening tests. Small-width closing and opening operating components can circumvent these structural limitations and meet the requirements of closing tests. However, the insufficient opening distance of these components can affect the accuracy of opening tests. Utility Model Content

[0004] The present application provides a closing and opening operation component, which can solve the technical problem that the existing closing and opening operation component with a small opening distance affects the circuit breaker opening test, and can improve the accuracy of the circuit breaker closing and opening test.

[0005] The technical solutions for this application are as follows:

[0006] The present application provides a closing / opening operating assembly for use in a circuit breaker, comprising a driving member and a driven member, the driven member being slidably connected to the driving member, with an operating space formed between the driven and driving members. The height of the operating space corresponds to the opening distance of the closing / opening operating assembly. The height of the operating space can vary as the driving member slides relative to the driven member. When the circuit breaker is closed, the operating space has a height of H1, and when the circuit breaker is open, the operating space has a height of H2, with H2 being greater than H1.

[0007] The closing and opening operating assembly of the present application has a small opening distance during the circuit breaker closing test, so as to avoid the influence of the circuit breaker's own structure. During the circuit breaker opening test, it has a large opening distance, which can meet the demand for free tripping of the circuit breaker and avoid the occurrence of slow rebound. It solves the technical problem that the existing closing and opening operating assembly with a small opening distance affects the accuracy of the circuit breaker opening test, and improves the accuracy of the circuit breaker closing and opening test.

[0008] In one possible design, the follower includes a first operating part, a first limiting part, a guide part and a second limiting part. The first operating part is used to toggle the operating handle of the circuit breaker to open the circuit breaker. The first limiting part is connected to one side of the first operating part. The guide part is connected to an end of the first limiting part away from the first operating part. The second limiting part is connected to an end of the guide part away from the first limiting part. The active part includes a second operating part, and the second operating part is used to toggle the operating handle of the circuit breaker to close the circuit breaker. The second operating part is arranged opposite to the first operating part and is slidably connected to the guide part. The second operating part can move between the first limiting part and the second limiting part to change the height of the operating space.

[0009] The closing and opening operating assembly provided by this embodiment comprises a follower including a first operating part, a first limiting part, a guide part and a second limiting part, and an active part including a second operating part. This application realizes the function of narrow opening distance when closing and wide opening distance when opening through the matching structure between the first operating part, the first limiting part, the guide part, the second limiting part and the second operating part, and has the characteristics of ingenious conception, simple structure and easy implementation.

[0010] In one possible design, the guide portion includes a guide rod. The active member includes a mounting portion connected to the second operating portion, the mounting portion being provided with a guide hole adapted for the guide rod, the guide rod being inserted into the guide hole, and the second operating portion being slidably connected to the guide rod via the mounting portion.

[0011] With the closing and opening operating assembly provided in this embodiment, the sliding connection between the active member and the driven member is achieved through the cooperation between the guide rod and the guide hole, which has the characteristics of simple structure and easy implementation.

[0012] In a possible design, there are two guide rods, and the two guide rods are arranged side by side between the first limiting portion and the second limiting portion.

[0013] The closing and opening operating assembly provided by this embodiment has two guide rods, which are arranged side by side between the first limiting portion and the second limiting portion. In this way, the active part can stably move along the guide rods between the first limiting portion and the second limiting portion, thereby avoiding deviation in the moving direction.

[0014] In a possible design, the guide rod and the second limiting portion are detachably connected.

[0015] The closing and opening operating assembly provided by this embodiment has a detachable connection between the second limiting portion and the guide rod. When the closing and opening operating assembly is in use, the second limiting portion can be set at different positions of the guide rod, or a gasket set on the guide rod can be added to the second limiting portion to adjust the distance between the second limiting portion and the first limiting portion to meet the requirements of different circuit breaker opening distances.

[0016] In a possible design, the first operating portion and the first limiting portion are located above the mounting portion. The guide rod and the guide hole are both arranged in a vertical direction.

[0017] With the closing and opening operation assembly provided by this embodiment, in a natural state, the active member and the driven member have a relatively stable positional relationship, and the second operating part can move better along the guide rod, which is conducive to the realization of the functions of the closing and opening operation assembly of the present application.

[0018] In a possible design, the first operating portion includes a first inclined surface for contacting the operating handle, and the second operating portion includes a second inclined surface for contacting the operating handle.

[0019] With the closing and opening operating assembly provided by this embodiment, the provision of the first inclined surface helps reduce the wear of the operating handle on the first operating portion. At the same time, the provision of the first inclined surface also helps prevent the first operating portion from being stuck with the operating handle.

[0020] In a possible design, the second operating portion includes a second inclined surface for contacting the operating handle.

[0021] With the closing and opening operating assembly provided by this embodiment, the provision of the second inclined surface is also beneficial for reducing the wear of the second operating portion and for preventing the second operating portion from becoming stuck with the operating handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a simplified structural diagram of the existing closing and opening operation components.

[0023] Figure 2 Shown is a structural schematic diagram of an existing 1U circuit breaker.

[0024] Figure 3 Shown is a structural schematic diagram of a circuit breaker closing and opening operation component provided in an embodiment of the present application.

[0025] Figure 4 The figure shows a state diagram of the circuit breaker closing and opening operation component provided in an embodiment of the present application during closing operation.

[0026] Figure 5 The figure shows a schematic diagram of the state of the circuit breaker closing and opening operation component provided in an embodiment of the present application during the opening operation.

[0027] Figure 6 Shown is a combined structural diagram of the first operating portion and the first limiting portion provided in an embodiment of the present application.

[0028] Figure 7 Shown is a schematic structural diagram of the active component provided in an embodiment of the present application.

[0029] The reference numerals of the prior art are: 11′, second operating portion; 21′, first operating portion; 31′, connecting portion; A, circuit breaker; A1, terminal; A2, operating handle;

[0030] The accompanying drawings of this application are marked as follows: Q, operating space; 1, active part; 11, second operating part; 111, second operating tooth; 112, second inclined surface; 12, mounting part; 2, driven part; 21, first operating part; 211, first operating tooth; 212, first inclined surface; 22, first limiting part; 23, guide part; 231, guide rod; 24, second limiting part. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification, claims, and figures of this application are intended to cover non-exclusive inclusions.

[0033] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] In addition, the terms "first", "second", etc. in the description and claims of this application or the above drawings are used to distinguish different objects rather than to describe a specific order.

[0035] In the description of the present application, unless otherwise specified, “plurality” means two or more (including two).

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a barrier, such as a fixed connection through screws, bolts or other barrier. The physical connection may also be a detachable connection, such as a mutual snap-on or snap-fit connection. The physical connection may also be an integral connection, such as a connection formed by welding, bonding or integral molding. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] The following is a detailed description of this application.

[0038] During circuit breaker closing and opening tests, the circuit breaker closing and opening operating assembly is used to toggle the operating handle to close and open the circuit breaker. The closing and opening operating assembly must have sufficient opening distance to properly close and open the circuit breaker.

[0039] Figure 1 The following is a simplified diagram of the structure of the existing closing and opening operation components. Please refer to Figure 1 The existing closing and opening operation assembly includes a first operating part 21′, a second operating part 11′ and a connecting part 31′. The first operating part 21′ and the second operating part 11′ are arranged opposite to each other. The first operating part 21′ and the second operating part 11′ form an integral structure through the connecting part 31′. The distance H between the first operating part 21′ and the second operating part 11′ is the opening distance of the closing and opening operation assembly.

[0040] When this type of closing / opening operating assembly is in use, the circuit breaker's operating handle is located between the first operating portion 21' and the second operating portion 11'. Taking the current position shown in the figure as an example, when the closing / opening operating assembly performs an opening test, the entire closing / opening operating assembly moves downward, and the first operating portion 21' pushes the operating handle. The operating handle then quickly releases due to the force of the circuit breaker's internal structure. When the closing / opening operating assembly performs a closing test, the entire closing / opening operating assembly moves upward, and the second operating portion 11' pushes the operating handle until it reaches the closed position.

[0041] Figure 2 The figure shows a schematic structural diagram of an existing circuit breaker. The terminal A1 of the circuit breaker A is located at the same end as the operating handle A2, and the terminal A1 is located above the operating handle A2. The terminal A1 limits the opening distance of the closing and opening operating components, and the opening distance of the closing and opening operating components is small.

[0042] If applied Figure 1The closing and opening operating assembly of the structure shown performs closing and opening operations on the above-mentioned circuit breaker. Although the closing and opening operating assembly with a smaller opening distance can meet the closing requirements, during the opening operation, the smaller opening distance affects the free tripping of the circuit breaker A when it is opened, resulting in slow and gradual retraction of the circuit breaker A, thus affecting the accuracy of the closing and opening tests.

[0043] To address the problem that the opening distance of a closing and opening operating component is limited, which affects the free tripping action of the circuit breaker during the opening operation of the circuit breaker and causes distortion of the circuit breaker test results, the present application provides a circuit breaker closing and opening operating component.

[0044] Figure 3 FIG. 1 is a structural diagram of a circuit breaker closing and opening operation component provided in an embodiment of the present application. Figure 4 The figure shows a state diagram of the circuit breaker closing and opening operation component provided in an embodiment of the present application during closing operation. Figure 5 A schematic diagram of the state of the circuit breaker closing and opening operation component provided in an embodiment of the present application during the opening operation.

[0045] Please refer to Figure 3 The closing and opening operating assembly provided in this application is applied to a circuit breaker A and includes an active member 1 and a passive member 2. The passive member 2 is slidably connected to the active member 1, forming an operating space Q between the passive member 2 and the active member 1. The height of the operating space Q is the opening distance of the closing and opening operating assembly. The height of the operating space Q can change as the active member 1 slides relative to the passive member 2.

[0046] Please combine Figures 3 to 5 When the circuit breaker A is closed, the height of the operating space Q is H1. When the circuit breaker A is open, the height of the operating space Q is H2, and H2 is greater than H1.

[0047] Please combine Figure 3 and Figure 4 When the closing and opening operation assembly of the present application is in the closing operation, the active part 1 can slide toward the driven part 2, thereby changing the height of the operating space Q and reducing the opening distance of the closing and opening operation assembly to H1. Figure 4 Move upward in the direction of the middle arrow and turn the operating handle A2 until it reaches the closing position.

[0048] Figure 4 The dotted circle area is the restricted area above the operating handle A2 of the circuit breaker A. Since the opening distance of the closing and opening operating component of the present application is small during the circuit breaker closing test, the influence of the restricted area above the circuit breaker A on the closing operation of the closing and opening operating component can be avoided.

[0049] Please combine Figure 3 and Figure 5When the closing and opening operation assembly of the present application is in the opening operation, the active member 1 can slide in the direction away from the driven member 2, thereby changing the height of the operating space Q and increasing the opening distance of the closing and opening operation assembly to H2. Figure 5 Move downward in the direction of the middle arrow, turn the operating handle A2, the operating handle A2 will trip freely, and the circuit breaker A will be opened.

[0050] From the above description, it can be seen that the closing and opening operating components of the present application have a small opening distance during the circuit breaker closing test, so that the influence of the structure of the circuit breaker A itself can be avoided. During the circuit breaker A opening test, the opening distance is large, which can meet the requirements of free tripping of the circuit breaker A and avoid the occurrence of slow rebound. It solves the technical problem that the existing closing and opening operating components with a small opening distance affect the opening test of the circuit breaker A, and improves the accuracy of the closing and opening test of the circuit breaker A.

[0051] It should be noted that the closing and opening test assembly provided in this application can be applied to the closing and opening tests of some circuit breakers that require a narrow opening distance when closing and a large opening distance when opening, and can also be applied to the closing and opening tests of general circuit breakers.

[0052] It should also be noted that the "upward" or "downward" mentioned in the above embodiments are based on the orientation shown in the accompanying drawings and are only used to facilitate the description of the present application. They do not indicate or imply that the closing and opening operating assembly of the present application must be moved upward or downward to move the operating handle A2. In some cases, the closing and opening assembly can also be moved left or right to move the handle.

[0053] Please continue to refer to Figure 3 In some embodiments of the present application, the follower 2 includes a first operating part 21, a first limiting part 22, a guide part 23 and a second limiting part 24. The first operating part 21 is used to toggle the operating handle A2 of the circuit breaker A to open the circuit breaker A. The first limiting part 22 is connected to one side of the first operating part 21. The guide part 23 is connected to the end of the first limiting part 22 away from the first operating part 21. The second limiting part 24 is connected to the end of the guide part 23 away from the first limiting part 22. The active part 1 includes a second operating part 11, which is used to toggle the operating handle A2 of the circuit breaker A to close the circuit breaker A. The second operating part 11 is arranged opposite to the first operating part 21 and is slidably connected to the guide part 23. The second operating part 11 can move between the first limiting part 22 and the second limiting part 24 to change the height of the operating space Q.

[0054] The working principle of the closing and opening operation assembly provided in the embodiment of the present application is as follows:

[0055] Please combine Figure 3 and Figure 4When closing the circuit breaker, the second operating part 11 moves along the guide portion 23 toward the first operating part 21 under the action of an external force. When it moves to the first limit portion 22, the distance between the first operating part 21 and the second operating part 11 is H1. That is, at this time, the opening distance of the closing and opening operating components is H1, and the operating handle A2 is close to the second operating part 11. The second operating part 11 continues to move toward the first operating part 21, which will drive the first operating part 21 to move synchronously and push the operating handle A2 to the closed position.

[0056] Please combine Figure 3 and Figure 5 During opening, the second operating portion 11 moves along the guide portion 23 under the action of an external force, away from the first operating portion 21. When it moves to the second limit portion 24, the distance between the first operating portion 21 and the second operating portion 11 is H2. That is, at this time, the opening distance of the closing and opening operating components is H2, and the operating handle A2 approaches the first operating portion 21. The second operating portion 11 continues to move away from the first operating portion 21, which drives the first operating portion 21 to move synchronously. The first operating portion 21 toggles the operating handle A2, which releases freely, and the circuit breaker A is opened.

[0057] The closing and opening operating assembly provided by the embodiment of the present application, wherein the follower 2 includes a first operating part 21, a first limiting part 22, a guide part 23 and a second limiting part 24, and the active part 1 includes a second operating part 11. The present application realizes the function of narrow opening distance when closing and wide opening distance when opening through the matching structure between the first operating part 21, the first limiting part 22, the guide part 23, the second limiting part 24 and the second operating part 11, and has the characteristics of ingenious conception, simple structure, and easy implementation.

[0058] Figure 6 The figure shows the structure of the active element 1 provided in the embodiment of the present application. Figure 3 and Figure 6 In some embodiments of the present application, the guide portion 23 includes a guide rod 231. The active member 1 includes a mounting portion 12 connected to the second operating portion 11. The mounting portion 12 is provided with a guide hole adapted for the guide rod 231. The guide rod 231 is inserted into the guide hole. The second operating portion 11 is slidably connected to the guide rod 231 via the mounting portion 12.

[0059] Specifically, the guide portion 23 of the present application includes a guide rod 231, and the active member 1 includes a mounting portion 12 connected to the second operating portion 11. The mounting portion 12 is provided with a guide hole adapted to the guide rod 231. In this way, the guide rod 231 of the driven member 2 can be inserted into the guide hole of the active member 1. The active member 1 can move along the guide rod 231, thereby changing the distance between the second operating portion 11 and the first operating portion 21.

[0060] Through the closing and opening operating assembly provided in the embodiment of the present application, the sliding connection between the active member 1 and the driven member 2 is achieved through the cooperation between the guide rod 231 and the guide hole, which has the characteristics of simple structure and easy implementation.

[0061] Please continue to refer to Figure 3 In some embodiments of the present application, there are two guide rods 231 , and the two guide rods 231 are arranged side by side between the first limiting portion 22 and the second limiting portion 24 .

[0062] Specifically, there are two guide rods 231 in the present application, and the two guide rods 231 are arranged side by side between the first limiting portion 22 and the second limiting portion 24. In this way, the active part 1 can stably move along the guide rod 231 between the first limiting portion 22 and the second limiting portion 24, and can avoid deviation in the moving direction.

[0063] Please continue to refer to Figure 3 In some embodiments of the present application, the guide rod 231 and the second limiting portion 24 are detachably connected.

[0064] Specifically, different circuit breakers A have different requirements for the opening and closing distance of the closing and opening operating components. The closing and opening operating components provided in this application have a detachable connection between the guide rod 231 and the second limiting portion 24. In this way, the second limiting portion 24 can be set at different positions on the guide rod 231 according to the opening distance requirements of different circuit breakers A to adjust the spacing between the second limiting portion 24 and the first limiting portion 22. Alternatively, a gasket that is sleeved on the guide rod 231 can be added to the second limiting portion 24 to adjust the spacing between the second limiting portion 24 and the first limiting portion 22.

[0065] The shorter the distance between the first limiting portion 22 and the second limiting portion 24, the shorter the distance that the active member 1 moves relative to the driven member 2, and the smaller the difference in the opening distance when the operating assembly is open relative to the opening distance when the operating assembly is closed. The longer the distance between the first limiting portion 22 and the second limiting portion 24, the longer the distance that the active member 1 moves relative to the driven member 2, and the larger the difference in the opening distance when the operating assembly is open relative to the opening distance when the operating assembly is closed.

[0066] Based on the above, the closing and opening operating assembly provided in the embodiment of the present application has a detachable connection between the second limiting portion 24 and the guide rod 231. When the closing and opening operating assembly is in use, the second limiting portion 24 can be set at different positions of the guide rod 231, or a gasket sleeved on the guide rod 231 can be added to the second limiting portion 24 to adjust the distance between the second limiting portion 24 and the first limiting portion 22 to meet the requirements of the opening distance of different circuit breakers A.

[0067] Please continue to refer to Figure 3In one embodiment of the present application, the first operating portion 21 and the first limiting portion 22 are located above the mounting portion 12. The guide rod 231 and the guide hole are both arranged in the vertical direction.

[0068] Specifically, in some embodiments of the present application, when the closing and opening operating assembly is in normal use, the first operating portion 21 and the first limiting portion 22 are located above the mounting portion 12, and the guide rod 231 and the guide hole are both arranged in the vertical direction. In this way, in a natural state, the mounting portion 12 supports the first operating portion 21 and the first limiting portion 22. The first operating portion 21 and the first limiting portion 22 fall on the mounting portion 12 by their own gravity, and the guide rod 231 is inserted into the guide hole. In this way, in a natural state, the active member 1 and the driven member 2 have a relatively stable positional relationship, and the second operating portion 11 can better move along the guide rod 231, which is conducive to the realization of the function of the closing and opening operating assembly of the present application.

[0069] Figure 7 The figure shows the combined structure of the first operating portion 21 and the first limiting portion 22 provided in the embodiment of the present application. Figure 3 、 Figure 6 and Figure 7 In some embodiments of the present application, the first operating portion 21 includes a plurality of first operating teeth 211 arranged side by side. The second operating portion 11 includes a plurality of second operating teeth 111 corresponding to the plurality of first operating teeth 211 in a one-to-one manner.

[0070] Specifically, the multiple first operating teeth 211 of the present application correspond one-to-one with the multiple second operating teeth 111, thus forming multiple pairs of operating teeth. During the closing and opening test of circuit breaker A, each pair of operating teeth can be used to toggle the operating handle A2 of a single-stage circuit breaker A. Multiple pairs of operating teeth can simultaneously toggle the operating handles A2 of multiple-stage circuit breakers A. This improves the efficiency of closing and opening tests of circuit breaker A.

[0071] Please continue to refer to Figure 3 、 Figure 6 and Figure 7 In some embodiments of the present application, the first operating portion 21 includes a first inclined surface 212 for contacting the operating handle A2.

[0072] Specifically, the first operating portion 21 includes a first inclined surface 212 for contacting the operating handle A2. Thus, when the closing / opening operating assembly opens circuit breaker A, the first inclined surface 212 applies force to the operating handle A2 of circuit breaker A, causing the operating handle A2 to slide along the first inclined surface 212. The provision of the first inclined surface 212 helps reduce wear on the first operating portion 21 by the operating handle A2 and also helps prevent the first operating portion 21 from becoming stuck with the operating handle A2.

[0073] Please continue to refer to Figure 3 、 Figure 6 and Figure 7 In some embodiments of the present application, the second operating portion 11 includes a second inclined surface 112 for contacting the operating handle A2.

[0074] For the same reason, the second operating portion 11 includes a second inclined surface 112 for contacting the operating handle A2. The provision of the second inclined surface 112 is also beneficial to reducing wear of the second operating portion 11 and preventing jamming between the second operating portion 11 and the operating handle A2.

[0075] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0076] As described above, the above embodiments are intended only to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. However, such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A closing and opening operating assembly, applied to a circuit breaker, characterized in that: include: Active parts; A driven member, the driven member is slidably connected to the active member, and an operating space is formed between the driven member and the active member; The height of the operating space is the opening distance of the closing and opening operating components; The height of the operating space can change as the active member slides relative to the driven member. When the circuit breaker is closed, the height of the operating space is H1. When the circuit breaker is open, the height of the operating space is H2, and H2 is greater than H1.

2. The closing and opening operating assembly according to claim 1, characterized in that: The follower includes a first operating portion, a first limiting portion, a guide portion and a second limiting portion; The first operating part is used to toggle the operating handle of the circuit breaker to open the circuit breaker; The first limiting portion is connected to one side of the first operating portion; The guide portion is connected to an end of the first limiting portion away from the first operating portion; The second limiting portion is connected to an end of the guide portion away from the first limiting portion; The active member includes a second operating portion, and the second operating portion is used to toggle the operating handle of the circuit breaker to close the circuit breaker; The second operating portion is arranged opposite to the first operating portion and is slidably connected to the guide portion; the second operating portion can move between the first limiting portion and the second limiting portion to change the height of the operating space.

3. The closing and opening operating assembly according to claim 2, characterized in that: The guide portion includes a guide rod; The active member includes a mounting portion connected to the second operating portion, the mounting portion is provided with a guide hole adapted to the guide rod, the guide rod is inserted into the guide hole, and the second operating portion is slidably connected to the guide rod by means of the mounting portion.

4. The closing and opening operating assembly according to claim 3, characterized in that: There are two guide rods, and the two guide rods are arranged side by side between the first limiting portion and the second limiting portion.

5. The closing and opening operating assembly according to claim 3, characterized in that: The guide rod and the second limiting portion are detachably connected.

6. The closing and opening operating assembly according to claim 3, characterized in that: The first operating portion and the first limiting portion are located above the mounting portion, and the guide rod and the guide hole are both arranged in a vertical direction.

7. The closing and opening operating assembly according to any one of claims 2 to 6, characterized in that: The first operating portion includes a plurality of first operating teeth arranged side by side; the second operating portion includes a plurality of second operating teeth corresponding one-to-one to the plurality of first operating teeth.

8. The closing and opening operating assembly according to any one of claims 2 to 6, characterized in that: The first operating portion includes a first inclined surface for contacting the operating handle.

9. The closing and opening operating assembly according to any one of claims 2 to 6, characterized in that: The second operating portion includes a second inclined surface for contacting the operating handle.

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