Circuit breaker mechanism top cover and circuit breaker

Abstract

The embodiment of the invention provides a circuit breaker mechanism top cover and a circuit breaker, and relates to the technical field of electrical equipment, and the circuit breaker mechanism top cover comprises a frame which comprises a positioning frame, a front baffle wall and a rear baffle wall, the front baffle wall and the rear baffle wall are arranged on the positioning frame at intervals in the first direction, and an opening area is formed in the middle of the positioning frame; the guide rail is installed on the positioning frame and extends in the first direction, the guide rail divides the opening area into at least two windowing units arranged at intervals in the second direction, the second direction is perpendicular to the first direction, and the guide rail is provided with a sliding channel extending in the first direction; the sliding channel is provided with a notch consistent with the opening direction of the opening area; and each cover plate comprises a cover plate body, a guide piece and a front positioning plate, the cover plate bodies are matched with the windowing units, and the guide pieces are arranged at the positions, corresponding to the sliding channels, of the cover plate bodies. In the embodiment of the invention, each cover plate can be assembled and disassembled independently, so that the convenience of assembling and disassembling the cover plates can be improved, and the labor cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a circuit breaker mechanism top cover and a circuit breaker. Background Art

[0002] In related technologies, circuit breakers are crucial protective devices in power systems, used to automatically disconnect circuits in abnormal situations such as short circuits and overloads to protect equipment and personnel. A circuit breaker's three-phase operating mechanism is a mechanical device used to control the three-phase opening and closing of the circuit breaker. This mechanism typically employs a split-phase independent control design, with each phase equipped with an independent drive device (such as an electromagnet or motor). This mechanism uses an insulated pull rod to synchronously operate the moving contacts of the corresponding poles, effectively avoiding the risk of partial-phase operation due to single-phase operation errors. It is suitable for power systems in scenarios with high reliability requirements, such as substations and transmission lines, and can cope with extreme load fluctuations and fault current shocks.

[0003] In the existing three-phase operating mechanism of the circuit breaker, the top cover is an integrated structure, which makes it difficult for a single person to operate the top cover, resulting in low flexibility and efficiency in disassembly and assembly of the top cover. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a circuit breaker mechanism cover and circuit breaker that not only provide protection against dust and insects, but also enable a single person to quickly install and remove the cover, thereby improving the efficiency of cover installation and removal.

[0005] An embodiment of the first aspect of the present application provides a circuit breaker mechanism top cover, comprising:

[0006] The frame includes a positioning frame and a front stop wall and a rear stop wall spaced apart along a first direction on the positioning frame, wherein an opening area is formed in the middle of the positioning frame;

[0007] at least one guide rail, the guide rail being mounted on the positioning frame and extending along a first direction, the guide rail dividing the opening area into at least two window units spaced apart along a second direction, the second direction being perpendicular to the first direction, wherein the guide rail has a sliding channel extending along the first direction, and the sliding channel has a notch consistent with the opening direction of the opening area;

[0008] At least two cover plates, each of which includes a cover plate body, a guide member and a front positioning plate, the cover plate body matches the window opening unit, the guide member is arranged at a position of the cover plate body corresponding to the sliding channel, the guide member slides in conjunction with the sliding channel, the front positioning plate is arranged at the front end of the cover plate body along the first direction, and the front positioning plate is used to cooperate with the front barrier wall.

[0009] Furthermore, the guide member includes a bending plate and a sliding structure, the bending plate is formed by bending the edge of the cover plate, and the sliding structure is connected to the bending plate. When the cover plate is matched with the window opening unit, the bending plate is parallel to the sliding channel, and the sliding structure abuts against the bottom wall of the sliding channel.

[0010] Furthermore, the sliding structure includes an abutment plate, the width of the abutment plate matches the width of the bottom wall of the sliding channel, and the width of the notch is greater than or equal to the width of the abutment plate; the cover plate can rotate with the front end of the frame or the rear end of the cover plate as a fulcrum.

[0011] Furthermore, it also includes a pressure plate, which is arranged at the rear end of the guide rail along the first direction and above the sliding channel; when the cover plate slides along the guide rail to abut against the rear barrier wall, the pressure plate covers above the cover plate to prevent the cover plate from falling off the guide rail.

[0012] Furthermore, the guide rail located between the window units has two sliding channels spaced apart along the second direction, and the guide rail includes a bottom wall and at least two side walls spaced apart on the bottom wall, and one sliding channel is defined between two adjacent side walls.

[0013] Furthermore, when the guide rail is located between two adjacent window units, the guide rail has two sliding channels, and the two sliding channels share one side wall, and each side wall is provided with a rounded corner at the entrance of the sliding channel.

[0014] Furthermore, the rear baffle wall is provided with a first lock catch, and the rear end of the cover plate along the first direction is provided with a second lock catch, and the first lock catch and the second lock catch cooperate; and / or, the front baffle wall is provided with a first fastening structure, and the front end of the cover plate along the first direction is provided with a second fastening structure, and the first fastening structure and the second fastening structure are aligned and detachably connected by a first fastener.

[0015] Furthermore, the dimensions of each of the cover plates along the first direction are equal, and the dimensions of each of the cover plates along the second direction are equal; and / or, an observation window is provided on the cover plate, and the observation window is provided with a transparent plate.

[0016] Furthermore, the guide rail is detachably connected to the positioning frame; the frame has a side retaining wall extending upward relative to the positioning frame, and the side retaining wall extends along the first direction. In the second direction, one side of the cover plate located at the end cooperates with the side retaining wall, and the other side cooperates with the sliding channel of the guide rail.

[0017] An embodiment of the second aspect of the present application provides a circuit breaker, comprising the circuit breaker mechanism top cover as described above, wherein the frame is connected to the top end of the body.

[0018] Furthermore, the main body includes a three-phase operating mechanism, which includes an A-phase operating mechanism, a B-phase operating mechanism and a C-phase operating mechanism. There are three window opening units, and each of the window opening units corresponds to the A-phase operating mechanism, the B-phase operating mechanism and the C-phase operating mechanism respectively; and / or, the circuit breaker is arranged in a 110kV or 220kV power supply system.

[0019] It can be seen from the above technical solutions that the embodiments of the present application have at least the following beneficial effects:

[0020] In the circuit breaker mechanism top cover and circuit breaker provided in the embodiment of the first aspect of the present application, a cover plate can be conveniently installed on the top of the circuit breaker mechanism body through a frame, so that the cover plate covers the opening area at the top of the circuit breaker mechanism body, which can serve to seal the opening area and enable the cover plate to serve as a dust and insect-proof protective structure for the circuit breaker mechanism. At the same time, in this embodiment, a guide rail is used to divide the opening area into a plurality of window units arranged at intervals along the second direction, and a slidable cover plate is provided above each window unit. Each cover plate can be installed and removed independently and can be operated by a single person, thereby improving the convenience of cover plate installation and removal and saving labor costs. The cover plate slides with the sliding channel of the guide rail through a guide member, and the guide member can be inserted into the sliding channel from any position in the sliding channel, so that the cover plate can be installed on the frame at different angles or in different ways, which is conducive to improving the speed and efficiency of cover plate installation and removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 A schematic structural diagram of a circuit breaker mechanism top cover provided in one embodiment of the present application;

[0023] Figure 2 A schematic structural diagram of a circuit breaker mechanism top cover from another perspective provided by an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the exploded structure of a circuit breaker mechanism top cover provided in one embodiment of the present application;

[0025] Figure 4Schematic diagram of the exploded structure of the circuit breaker mechanism top cover from another perspective provided in one embodiment of the present application

[0026] Figure 5 A schematic diagram of a portion of the structure of a circuit breaker mechanism top cover provided in one embodiment of the present application;

[0027] Figure 6 A schematic diagram of a top view of a circuit breaker mechanism cover according to an embodiment of the present application;

[0028] Figure 7 for Figure 6 Schematic diagram of the cross-section structure at the AA position;

[0029] Figure 8 for Figure 7 A schematic diagram of the partially enlarged structure of part B;

[0030] Figure 9 for Figure 7 A schematic diagram of the partially enlarged structure of part C in the middle;

[0031] Figure 10 A schematic diagram of the structure of the top cover and the main body of a circuit breaker mechanism provided in one embodiment of the present application;

[0032] Figure 11 A schematic structural diagram of the cooperation between the circuit breaker mechanism top cover and the circuit breaker body provided by an embodiment of the present application from another perspective;

[0033] Figure 12 This is a schematic diagram of the installation of a circuit breaker mechanism top cover and a circuit breaker body provided in one embodiment of the present application.

[0034] Reference numerals:

[0035] 10. Circuit breaker body;

[0036] 100, frame; 110, positioning frame; 120, front baffle; 130, rear baffle; 140, side baffle; 150, window unit; 160, first lock;

[0037] 200, guide rail; 210, sliding channel; 220, bottom wall; 230, side wall;

[0038] 300, cover plate; 310, cover plate body; 320, guide member; 321, bending plate; 322, sliding structure; 330, front positioning plate; 340, transparent plate; 350, second lock;

[0039] 400. Press plate. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only 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.

[0041] See also Figures 1 to 12 As shown, an embodiment of the first aspect of the present application discloses a circuit breaker mechanism top cover, including a frame 100 , a guide rail 200 and a cover plate 300 .

[0042] Specifically, the frame 100 includes a positioning frame 110 and a front baffle 120 and a rear baffle 130 spaced apart along a first direction on the positioning frame 110, and an opening area is formed in the middle of the positioning frame 110; the guide rail 200 has at least one, the guide rail 200 is installed on the positioning frame 110, and the guide rail 200 extends along the first direction, and the guide rail 200 divides the opening area into at least two window units 150 spaced apart along a second direction, and the second direction is perpendicular to the first direction, wherein the guide rail 200 has a sliding channel 210 extending along the first direction, and the sliding channel 210 has an opening direction with respect to the opening area Consistent notches; the cover 300 has at least two, each cover 300 includes a cover body 310, a guide member 320 and a front positioning plate 330, the cover body 310 matches the window unit 150, the guide member 320 is arranged at the position of the cover body 310 corresponding to the sliding channel 210, the guide member 320 slides with the sliding channel 210, the front positioning plate 330 is arranged at the front end of the cover body 310 along the first direction, the front positioning plate 330 is used to cooperate with the front baffle wall 120 to stop the cover 300 from continuing to move along the first direction, and at the same time is used to improve the sealing of the cover 300 and the positioning frame 110.

[0043] It is worth noting that the first direction refers to the D1 direction in the diagram, and the second direction refers to the D2 direction in the diagram. When moving along the first direction or the second direction, the first position passed is recorded as the front end, and the subsequent position passed is recorded as the rear end. For example, see Figure 2 and Figure 3 , the first direction refers to the D1 direction in the diagram, and the second direction refers to the D2 direction in the diagram.

[0044] In the circuit breaker mechanism top cover provided in the embodiment of the present application, the cover plate 300 can be conveniently installed on the top of the circuit breaker mechanism body through the frame 100, so that the cover plate 300 covers the opening area at the top of the circuit breaker mechanism body, which can play the role of sealing the opening area, and can enable the cover plate 300 to serve as a dust-proof and insect-proof protective structure of the circuit breaker mechanism. At the same time, in this embodiment, the guide rail 200 is used to divide the opening area into a plurality of window units 150 arranged at intervals along the second direction. A sliding cover plate 300 is provided above each window unit 150. The installation and removal of each cover plate 300 can be carried out independently and can be operated by a single person. Thus, the convenience of installing and removing the cover plate 300 can be improved, and labor costs can be saved; the cover plate 300 is slidably matched with the sliding channel 210 of the guide rail 200 through the guide member 320, and the guide member 320 can be inserted into the sliding channel 210 from any position in the sliding channel 210, so that the cover plate 300 can be installed on the frame 100 at different angles or in different ways, which is conducive to improving the speed and efficiency of installing and removing the cover plate 300.

[0045] In one embodiment, see Figure 2 and Figure 3 The guide member 320 includes a bent plate 321 and a sliding structure 322. The bent plate 321 is formed by bending the edge of the cover plate 300. The sliding structure 322 is connected to the bent plate 321. When the cover plate 300 is engaged with the window unit 150, the bent plate 321 is parallel to the sliding channel 210, and the sliding structure 322 abuts against the bottom wall 220 of the sliding channel 210. The sliding structure 322 can extend into the sliding channel 210 from any position of the sliding channel 210. In this way, the cover plate 300 can be installed on the slide rail in different installation methods, which improves the convenience of installing the cover plate 300. The bent plate 321 is formed by bending the edge of the cover plate 300, which can simplify the production process of the cover plate 300.

[0046] In one possible implementation, see Figure 2 and Figure 3 The guide rail 200 located between the window units 150 has two sliding channels 210 spaced apart along the second direction. The guide member 320 includes a bent plate 321 and a sliding structure 322. The bent plate 321 is formed by bending the edge of the cover plate 300, and the sliding structure 322 is connected to the bent plate 321. When the cover plate 300 is engaged with the window unit 150, the bent plate 321 is parallel to the sliding channel 210, and the sliding structure 322 abuts the bottom wall 220 of the sliding channel 210. Thus, by providing two sliding channels 210 on a single guide rail 200 for mating with the sliding structures 322 on the cover plates 300 on both sides of the guide rail 200, a single guide rail 200 is shared, thereby saving costs.

[0047] In some embodiments of this application, see Figure 2、 Figure 8 and Figure 12 The sliding structure 322 includes an abutment plate whose width matches the width of the bottom wall 220 of the sliding channel 210, and the width of the notch is greater than or equal to the width of the abutment plate. When the cover plate 300 slides along the guide rail 200 until the front end of the cover plate 300 is located in front of the front end of the frame 100, the cover plate 300 can rotate around the front end of the frame 100 or the rear end of the cover plate 300. As shown in the figure, the bottom end surface of the abutment plate is parallel to the bottom wall 220 of the sliding channel 210.

[0048] Among them, the width of the abutment plate is less than or equal to the width of the notch of the sliding channel 210, so that the abutment plate can extend into the sliding channel 210 from the position of the notch above the sliding channel 210. In this way, the abutment plate can extend into the sliding channel 210 from the notch at any position of the sliding channel 210, and is not limited to extending into the sliding channel 210 from the end of the sliding channel 210, so that the cover plate 300 can be installed in different installation methods according to the on-site installation environment, thereby improving the convenience of disassembly and assembly of the cover plate 300.

[0049] In the above embodiment, when any position of the abutment plate engages with the sliding channel 210, the sliding channel 210 can provide a guide for the cover plate 300, facilitating movement of the cover plate 300 to the predetermined installation position. Since the abutment plate is already engaged with the sliding channel 210, once the cover plate 300 is moved into position, there is no need to reposition the abutment plate; that is, the cover plate 300 can be directly installed in the predetermined position, thereby improving installation efficiency.

[0050] In one possible embodiment, see Figure 2 、 Figure 8 and Figure 12 The width of the abutment plate is comparable to the width of the bottom wall 220, for example, the width of the abutment plate is equal to the width of the bottom wall 220, or the width of the bottom wall 220 is slightly larger than the width of the abutment plate, so that the abutment plate can basically completely cover the bottom wall 220. On the one hand, the abutment plate and the cover plate 300 can be positioned through the sliding channel 210 to prevent the abutment plate and the cover plate 300 from moving relative to the positioning frame 110 along the second direction. On the other hand, the abutment plate can be used to block the guide rail 200, which can reduce the accumulation of dust on the guide rail 200.

[0051] In the above embodiment, the width of the notch is greater than or equal to the width of the abutment plate, so that the abutment plate can escape from the notch above the sliding channel 210. For example, Figure 8 and Figure 12As shown, when the cover plate 300 is located on the guide rail 200, corresponding to state I in the figure, at this time, the abutment plate contacts the bottom wall 220 of the sliding channel 210, and the guide rail 200 or the frame 100 provides support for the cover plate 300. When the cover plate 300 slides along the guide rail 200 until the front end of the cover plate 300 is located in front of the front end of the frame 100, the cover plate 300 can be rotated with the front end of the positioning frame 110 as the fulcrum, corresponding to state II in the figure. At this time, a single person can use the front end of the positioning frame 110 as the fulcrum to carry the end or handle of the cover plate 300, so that the part of the cover plate 300 located on the guide rail 200 is separated from the guide rail 200, making it easier to remove the cover plate 300 from the guide rail 200. The reverse operation is also conducive to placing the cover plate 300 on the guide rail 200. When the cover plate 300 slides along the guide rail 200 until the front end of the cover plate 300 is located in front of the front end of the frame 100, the cover plate 300 can rotate with the rear end of the cover plate 300 as a fulcrum, corresponding to state III in the figure. At this time, a single person can use the rear end of the cover plate 300 as a fulcrum to lift the front end of the cover plate 300 and open the cover plate 300, which is convenient for disassembly of the cover plate 300, or for lifting the cover plate 300 to expose the opening, thereby facilitating operation of the components inside the main body of the circuit breaker.

[0052] In some other embodiments, the sliding structure 322 includes a roller, which is arranged on the inner side of the bending plate 321. The roller cooperates with the sliding channel 210, and can transform the sliding cooperation between the abutment plate and the sliding channel 210 into a rolling cooperation between the roller and the sliding channel 210, which is beneficial to reduce friction and make the movement of the cover plate 300 more labor-saving.

[0053] In some embodiments of this application, see Figure 4 A first lock catch 160 is provided on the rear retaining wall 130, and a second lock catch 350 is provided at the rear end of the cover plate 300 along the first direction. The first lock catch 160 and the second lock catch 350 engage with each other. When the first lock catch 160 and the second lock catch 350 engage, the cover plate 300 is locked by the first lock catch 160 and the second lock catch 350 when no external force is applied to the cover plate 300, preventing undesirable movement of the cover plate 300. When an operator applies a forward pulling force to the cover plate 300, or rotates the first lock catch 160 and the second lock catch 350 relative to each other, the first lock catch 160 can disengage from the second lock catch 350, allowing the cover plate 300 to be removed.

[0054] In a possible implementation, the first locking buckle 160 may be a buckle, and the second locking buckle 350 may be a buckle. At least one of the two buckles may be elastically deformed to clamp the other buckle.

[0055] In some embodiments of this application, see Figure 4The front barrier 120 is provided with a first fastening structure (not shown), and the front end of the cover plate 300 along the first direction is provided with a second fastening structure. The first and second fastening structures are aligned and removably connected by a first fastener. When the cover plate 300 covers the opening area, the first fastener can be further used to removably secure the cover plate 300 to the frame 100, thereby preventing the cover plate 300 from moving.

[0056] In a possible embodiment, the first fastening structure may be a threaded hole, the second fastening structure may be a through hole, and the first fastener may be a bolt or a screw, which is threadedly connected to the threaded hole to fix the cover plate 300 to the frame 100.

[0057] In some embodiments of this application, see Figure 12 The circuit breaker mechanism cover 300 also includes a pressure plate 400, which is arranged at the rear end of the guide rail 200 along the first direction and above the sliding channel 210; when the cover 300 slides along the guide rail 200 until the rear end of the cover 300 is engaged with the rear end of the guide rail 200, the pressure plate 400 covers the top of the cover 300 and can prevent the cover 300 from separating from the guide rail 200.

[0058] In some embodiments of this application, see Figure 7 and Figure 8 The guide rail 200 includes a bottom wall 220 and at least two side walls 230 spaced apart from each other on the bottom wall 220 , and a sliding channel 210 is defined between two adjacent side walls 230 .

[0059] In some embodiments of this application, please continue to refer to Figure 7 and Figure 8 When the guide rail 200 is located between two adjacent window units 150, the guide rail 200 has two sliding channels 210, and the two sliding channels 210 share a side wall 230. Each side wall 230 is provided with a rounded corner at the entrance of the sliding channel 210. In this way, the guide member 320 of the cover plate 300 can be easily matched with the sliding channel 210, which helps to ensure the efficiency of assembly and disassembly.

[0060] In one possible embodiment, the pressure plate 400 can be disposed on the sidewall 230 shared by the two sliding channels 210 and extend to both sides to cover the upper portion of the sliding channels 210. When the cover plate 300 slides along the guide rail 200 until the rear end of the cover plate 300 mates with the rear end of the guide rail 200, the pressure plate 400 covers the upper portion of the cover plate 300, preventing the cover plate 300 from separating from the guide rail 200. When the cover plate 300 partially separates from the guide rail 200, the cover plate 300 is free from the coverage area of ​​the pressure plate 400, and the cover plate 300 can rotate around the front end of the frame 100 or the rear end of the cover plate 300, facilitating installation or removal of the cover plate 300.

[0061] In some embodiments of the present application, the dimensions of each cover plate 300 along the first direction are equal, and the dimensions of each cover plate 300 along the second direction are equal. In this way, the cover plates 300 can be used as standardized modules, facilitating the production of the cover plates 300.

[0062] In some embodiments of the present application, the cover plate 300 is provided with an observation window, which is provided with a transparent plate 340. The provision of the observation window and the transparent plate 340 facilitates observation of components within the circuit breaker body 10 through the observation window. In practical applications, the transparent plate 340 may be, but is not limited to, tempered glass or an acrylic plate.

[0063] In some embodiments of the present application, a marking area is provided on the cover plate 300, and the marking area can be marked by pasting, spraying, etc. The marking area can be used to mark the components of the circuit breaker corresponding to the installation position of the cover plate 300.

[0064] In some embodiments of this application, see Figure 4 The cover plate 300 is provided with at least two handles spaced apart along the first direction D1, so that the operator can use both hands to cooperate with the handles and move the cover plate 300. The handles are staggered with the observation window.

[0065] In some embodiments of the present application, the guide rail 200 is detachably connected to the positioning frame 110 .

[0066] In some embodiments of this application, see Figure 3 and Figure 4 The frame 100 has a side retaining wall 140 extending upward relative to the positioning frame 110. The side retaining wall 140 extends in a first direction. One side of the cover plate 300 located at the end in the second direction engages with the side retaining wall 140, and the other side engages with the sliding channel 210 of the guide rail 200. In this way, the side retaining wall 140 can guide the cover plate 300.

[0067] An embodiment of the second aspect of the present application discloses a circuit breaker, comprising the circuit breaker mechanism top cover and the circuit breaker body 10 as described above, wherein the frame 100 is connected to the top of the circuit breaker body 10 .

[0068] It is worth understanding that the circuit breaker disclosed in the embodiment of the second aspect of the present application has all the technical effects of the aforementioned circuit breaker mechanism cover, which will not be repeated here.

[0069] In some embodiments of the present application, the circuit breaker body 10 includes a three-phase operating mechanism, which includes an A-phase operating mechanism, a B-phase operating mechanism, and a C-phase operating mechanism. There are three window opening units 150, and each window opening unit 150 corresponds to the A-phase operating mechanism, the B-phase operating mechanism, and the C-phase operating mechanism, respectively.

[0070] In some embodiments of the present application, the circuit breaker is provided in a 110 kV or 220 kV power supply system.

[0071] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0072] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0073] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0074] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0075] It should be understood that although the steps in the flowcharts of the accompanying drawings are shown in sequence as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

Claims

1. A circuit breaker mechanism top cover, characterized in that: include: The frame includes a positioning frame and a front stop wall and a rear stop wall spaced apart along a first direction on the positioning frame, wherein an opening area is formed in the middle of the positioning frame; at least one guide rail, the guide rail being mounted on the positioning frame and extending along a first direction, the guide rail dividing the opening area into at least two window units spaced apart along a second direction, the second direction being perpendicular to the first direction, wherein the guide rail has a sliding channel extending along the first direction, and the sliding channel has a notch consistent with the opening direction of the opening area; At least two cover plates, each of which includes a cover plate body, a guide member and a front positioning plate, the cover plate body matches the window opening unit, the guide member is arranged at a position of the cover plate body corresponding to the sliding channel, the guide member slides in conjunction with the sliding channel, the front positioning plate is arranged at the front end of the cover plate body along the first direction, and the front positioning plate is used to cooperate with the front barrier wall.

2. The circuit breaker mechanism top cover according to claim 1, characterized in that: The guide member includes a bending plate and a sliding structure. The bending plate is formed by bending the edge of the cover plate. The sliding structure is connected to the bending plate. When the cover plate is matched with the window unit, the bending plate is parallel to the sliding channel, and the sliding structure abuts against the bottom wall of the sliding channel.

3. The circuit breaker mechanism top cover according to claim 2, characterized in that: The sliding structure includes an abutment plate, the width of which matches the width of the bottom wall of the sliding channel, and the width of the notch is greater than or equal to the width of the abutment plate; the cover plate can rotate with the front end of the frame or the rear end of the cover plate as a fulcrum.

4. The circuit breaker mechanism top cover according to any one of claims 1 to 3, characterized in that: It also includes a pressure plate, which is arranged at the rear end of the guide rail along the first direction and above the sliding channel; when the cover plate slides along the guide rail to abut against the rear barrier wall, the pressure plate covers above the cover plate to prevent the cover plate from falling off the guide rail.

5. The circuit breaker mechanism top cover according to claim 1, characterized in that: The guide rail located between the window units has two sliding channels spaced apart along the second direction. The guide rail includes a bottom wall and at least two side walls spaced apart on the bottom wall. One sliding channel is defined between two adjacent side walls.

6. The circuit breaker mechanism top cover according to claim 5, characterized in that: When the guide rail is located between two adjacent window units, the guide rail has two sliding channels, and the two sliding channels share one side wall, and each side wall is provided with a rounded corner at the entrance of the sliding channel.

7. The circuit breaker mechanism top cover according to claim 1, characterized in that: The rear baffle is provided with a first lock catch, and the rear end of the cover plate along the first direction is provided with a second lock catch, and the first lock catch and the second lock catch cooperate with each other; and / or, the front baffle is provided with a first fastening structure, and the front end of the cover plate along the first direction is provided with a second fastening structure, and the first fastening structure and the second fastening structure are aligned and detachably connected by a first fastener.

8. The circuit breaker mechanism top cover according to claim 1, wherein: The guide rail is detachably connected to the positioning frame; the frame has a side retaining wall extending upward relative to the positioning frame, and the side retaining wall extends along the first direction. In the second direction, one side of the cover plate located at the end cooperates with the side retaining wall, and the other side cooperates with the sliding channel of the guide rail.

9. A circuit breaker, characterized in that: The circuit breaker comprises a circuit breaker mechanism top cover and a circuit breaker body according to any one of claims 1 to 8, wherein the frame is connected to the top end of the circuit breaker body.

10. The circuit breaker according to claim 9, characterized in that The circuit breaker body includes a three-phase operating mechanism, which includes an A-phase operating mechanism, a B-phase operating mechanism and a C-phase operating mechanism. There are three window opening units, and each window opening unit corresponds to the A-phase operating mechanism, the B-phase operating mechanism and the C-phase operating mechanism respectively; and / or, the circuit breaker is arranged in a 110kV or 220kV power supply system.

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