Insulation protection device for primary and secondary fusion vacuum circuit breaker disconnecting link

Abstract

The invention relates to the technical field of metal conductive insulation protection, in particular to an insulation protection device for a primary and secondary fusion vacuum circuit breaker disconnecting link. The device comprises a protective device and an adjusting device, wherein the protective device comprises a protective cover body and a limiting device; the protective cover body comprises a first protective shell and a second protective shell, a sliding groove is formed in the top of the first protective shell, a protruding block is arranged at the top of the second protective shell, and the protruding block is arranged in the sliding groove; the limiting device comprises two symmetrical limiting plates and a torsional spring device, and the two limiting plates abut against each other; the limiting plate is in sliding connection with the first protective shell, and the torsional spring device is wound on the limiting plate and connected with the side wall of the first protective shell. According to the invention, the disconnecting link can enter the protective cover body without dismounting the insulation protective device, the problem of high protection complexity of the disconnecting link in the prior art is solved, and insulation protection can be carried out on various disconnecting links of different specifications according to the flexible adaptability of the insulation protective device.

Description

Technical Field

[0001] The present application relates to the technical field of metal conductive insulation protection, and in particular to an insulation protection device for a primary-secondary fusion vacuum circuit breaker switch. Background Art

[0002] During the operation of the current primary and secondary fusion vacuum circuit breaker, the knife switch is a conductive device and needs to be insulated to avoid the risk of electric shock. In some existing insulation protection devices, the knife switch can usually be placed in the insulation cover only after the insulation device is partially disassembled. There is an obvious problem of high complexity and cumbersomeness in the protection assembly. At the same time, these existing insulation protection devices can only be applied to knife switches of a certain specification and size, and cannot be flexibly protected according to different types of primary and secondary fusion vacuum circuit breaker knife switches, which greatly limits its application diversity and flexible adaptability. Summary of the invention

[0003] The present application provides an insulation protection device for a primary-secondary fusion vacuum circuit breaker switch to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0005] According to one aspect of the embodiment of the present application, there is provided an insulation protection device for a primary-secondary fusion vacuum circuit breaker switch, the device comprising a protection device and an adjustment device, the protection device comprising a protection cover body and a limit device provided at the lower end of the protection cover body; The protective cover body comprises a first protective shell and a second protective shell, the top of the first protective shell is provided with a sliding groove, the top of the second protective shell is provided with a protruding block, the protruding block is arranged in the sliding groove so that the first protective shell and the second protective shell can be slidably connected; The limiting device includes two symmetrical limiting plates and a torsion spring device, the two limiting plates abut against each other; the limiting plates are slidably connected to the first protective shell, and the torsion spring device is wound around the limiting plates and connected to the side wall of the first protective shell; Among them, during the process of the primary and secondary fused vacuum circuit breaker knife switch entering the protective cover body, the primary and secondary fused vacuum circuit breaker knife switch continuously pushes the two limit plates to rotate, and the torsion spring device abuts against the limit plates to form an opening through which the primary and secondary fused vacuum circuit breaker knife switch can pass, and the primary and secondary fused vacuum circuit breaker knife switch enters the protective cover body through the opening; after the primary and secondary fused vacuum circuit breaker knife switch completely enters the protective cover body, the two limit plates are reset to close the opening.

[0006] In one embodiment of the present application, based on the above-mentioned solution, the limit plate includes a rotating shaft, a rotatable plate and two positioning blocks arranged on the rotatable plate, the two ends of the rotating shaft are connected to the first protective shell, and the rotatable plate is connected to the rotating shaft; Wherein, when the opening is closed, the two positioning blocks are in contact with each other.

[0007] In one embodiment of the present application, based on the above solution, the torsion spring device includes a winding portion, an extension portion connected to the winding portion, and a bending portion connected to one end of the extension portion, the winding portion is wound around the rotating shaft, and the extension portion is in contact with the rotatable plate; Among them, in the process of the primary and secondary fusion vacuum circuit breaker knife switch entering the protective cover body, the rotatable plates of the two limit plates rotate and the bending portion abuts against the rotatable plates, so that the two rotatable plates are continuously opened to form the opening, and the opening is used to allow the primary and secondary fusion vacuum circuit breaker knife switch to pass completely.

[0008] In one embodiment of the present application, based on the aforementioned scheme, the first protective shell includes an arch-shaped protective shell, an intermediate protective shell and a square protective shell, the arch-shaped protective shell and the square protective shell are respectively arranged at the two ends of the intermediate protective shell, and the square protective shell is slidably connected to the second protective shell.

[0009] In one embodiment of the present application, based on the aforementioned scheme, the intermediate protective shell includes a top and two lateral extensions, the sliding groove is arranged at the top, and the two ends of the top are respectively connected to the arch-shaped protective shell and the square protective shell; the lateral extension is located below the top and connected to the top, and the two ends of the lateral extension are respectively connected to the arch-shaped protective shell and the square protective shell.

[0010] In one embodiment of the present application, based on the aforementioned scheme, the sliding groove includes a sliding connecting portion and a limiting portion, the sliding connecting portion is connected to the limiting portion, and when the protruding block is located at the limiting portion, the second protective shell is embedded in the square protective shell and fixedly connected to the square protective shell; when the protruding block is located at the sliding connecting portion, the second protective shell is slidably connected to the square protective shell.

[0011] In one embodiment of the present application, based on the aforementioned solution, the adjusting device includes a door-shaped clamping device and an adjusting rod device, the adjusting rod device is fixedly connected to the door-shaped clamping device, and the door-shaped clamping device is connected to the arch-shaped protective shell.

[0012] In one embodiment of the present application, based on the aforementioned scheme, the adjusting rod device includes a connecting rod, an assembly block provided at one end of the connecting rod and a fixed block provided at the other end of the connecting rod; the fixed block is fixedly connected to the top of the door-shaped clamping device.

[0013] In one embodiment of the present application, based on the aforementioned scheme, the door-shaped clamping device includes a door-shaped shell, a screw fixing device and two clamping extensions extending into the door-shaped shell; the door-shaped shell is connected to the two clamping extensions, and the screw fixing device passes through the door-shaped shell and is connected to the clamping extensions and the arch-shaped protective shell, so as to clamp and fix the arch-shaped protective shell.

[0014] In one embodiment of the present application, based on the aforementioned scheme, the screw fixing device includes a screw rod, a spring and a bolt, wherein the bolt is arranged on the clamping extension portion and is in contact with the arch-shaped protective shell; the spring is arranged on the screw rod, and the screw rod passes through the door-shaped shell and is threadedly connected to the bolt, wherein the arch-shaped protective shell is clamped by the screw rod and the clamping extension portion.

[0015] The beneficial effects of the present application are: through the slidable connection between the first protective shell and the second protective shell, the protective area and protective volume of the protective cover body can be expanded, and when facing primary and secondary fused vacuum circuit breaker switches of different specifications and models, the protective cover body can be flexibly adjusted according to the size of the switch, thereby improving the flexible adaptability of the insulation protection device of the present application.

[0016] Furthermore, in the original state where the primary and secondary fusion vacuum circuit breaker knife switch is not placed or the primary and secondary fusion vacuum circuit breaker knife switch has been completely placed into the protective cover, the two limit plates abut against each other and form an all-round protective cover with the first protective shell and the second protective shell. In the process of the primary and secondary fusion vacuum circuit breaker knife switch entering the protective cover, the primary and secondary fusion vacuum circuit breaker knife switch continuously pushes the two limit plates to rotate, and the torsion spring device abuts against the limit plates to form an opening through which the primary and secondary fusion vacuum circuit breaker knife switch can pass, thereby allowing the primary and secondary fusion vacuum circuit breaker knife switch to completely enter the protective cover, and finally the elastic deformation of the torsion spring device causes the two limit plates to reset to close the opening, and finally allows the knife switch to enter the protective cover of the insulation protection device, so that the protective cover can effectively insulate the knife switch.

[0017] Therefore, the present application does not require the disassembly of the insulating protection device to allow the knife switch to enter the protective cover, thereby solving the problem of high complexity in the protection of the knife switch in the prior art. At the same time, the flexible adaptability of the insulating protection device of the present application can be used to provide insulation protection for knife switches of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief description of the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present application, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of a primary-secondary fusion vacuum circuit breaker according to an embodiment of the present application; Figure 2 A schematic diagram of a protective device according to an embodiment of the present application being mounted on a primary-secondary fusion vacuum circuit breaker switch to provide insulation protection for the switch; Figure 3 It is an overall schematic diagram of an insulation protection device for a primary-secondary fusion vacuum circuit breaker according to an embodiment of the present application; Figure 4 It is a schematic diagram of a limit plate and a protective cover body in an opening closed state according to an embodiment of the present application; Figure 5 It is a schematic diagram of the position connection between the torsion spring device and the limit plate when the knife switch pushes the limit plate into the protective cover according to the embodiment of the present application; Figure 6 is a schematic diagram of a first protective housing according to an embodiment of the present application; Figure 7This is a schematic diagram of a state in which the second protective housing is extended according to an embodiment of the present application; Figure 8 is a specific structural diagram of an adjusting device according to an embodiment of the present application; Fig. 9 is a schematic diagram of the internal structure of a fixing block according to an embodiment of the present application; Fig.10 It is an unassembled diagram of parts of a door-shaped clamping device according to an embodiment of the present application; Fig.11 This is a schematic diagram of a door-shaped clamping device according to an embodiment of the present application after all parts are assembled; Fig.12 It is a schematic diagram of the interior of a protective cover body without a limiting device according to an embodiment of the present application. Attached photos

[0020] Protective device 1, protective cover body 11, first protective shell 111, arch-shaped protective shell 1111, middle protective shell 1112, top 11121, lateral extension 11122, square protective shell 1113, sliding groove 112, sliding connecting part 1121, limiting part 1122, second protective shell 113, protruding block 114, limiting device 12, limiting plate 121, rotating shaft 1211, rotatable plate 1212, positioning block 1213 , torsion spring device 122, winding portion 1221, extension portion 1222, bending portion 1223, opening 123, adjusting device 2, door-shaped clamping device 21, door-shaped shell 211, screw fixing device 212, screw rod 2121, spring 2122, bolt 2123, clamping extension portion 213, adjusting rod device 22, connecting rod 221, assembly block 222, fixing block 223, primary and secondary fusion vacuum circuit breaker knife switch 3, primary and secondary fusion vacuum circuit breaker 4. DETAILED DESCRIPTION

[0021] Example embodiments are now described more fully in conjunction with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0022] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the present application.

[0023] The block diagrams shown in the accompanying drawings are only functional entities and do not necessarily correspond to physically independent entities. These functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or micro-control node devices.

[0024] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0025] It should be noted that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0026] The following is an introduction to the application environment of the embodiment of the present application: like Figure 1 and Figure 2 As shown, Figure 1 It is a structural schematic diagram of a primary and secondary fusion vacuum circuit breaker 4, Figure 2 The schematic diagram of the protective device 1 of the present application being mounted on the primary and secondary fusion vacuum circuit breaker switch 3 to provide insulation protection for the switch. The primary and secondary fusion vacuum circuit breaker switch 3 can be as follows Figure 1 As shown, it is a long strip of metal conductive device. The insulation protection device of the present application is used to provide all-round insulation protection for the knife switch 3 of the primary and secondary fusion vacuum circuit breaker to avoid the risk of conduction. Because the primary and secondary fusion vacuum circuit breaker has three knife switches, the risk of conduction may come from some animals crawling between adjacent knife switches. Since animals are generally conductors, it is easy for the knife switches to be energized.

[0027] The implementation details of the technical solution of the embodiment of the present application are described in detail below: According to one aspect of the embodiment of the present application, an insulation protection device for a primary and secondary fusion vacuum circuit breaker switch is provided, such as Figure 3-Figure 12 As shown, the device comprises a protective device 1 and an adjusting device 2, wherein the protective device 1 comprises a protective cover body 11 and a limiting device 12 arranged at the lower end of the protective cover body 11; The protective cover body 11 includes a first protective shell 111 and a second protective shell 113. A sliding groove 112 is provided on the top of the first protective shell 111, and a protruding block 114 is provided on the top of the second protective shell 113. The protruding block 114 is arranged in the sliding groove 112 so that the first protective shell 111 and the second protective shell 113 can be slidably connected. The limiting device 12 includes two symmetrical limiting plates 121 and a torsion spring device 122, the two limiting plates 121 abut against each other; the limiting plates 121 are slidably connected to the first protective shell 111, and the torsion spring device 122 is wound around the limiting plates 121 and connected to the side wall of the first protective shell 111; Among them, in the process of the primary and secondary fusion vacuum circuit breaker knife switch 3 entering the protective cover body 11, the primary and secondary fusion vacuum circuit breaker knife switch 3 continuously pushes the two limit plates 121 to rotate, and the torsion spring device 122 abuts against the limit plates 121 to form an opening 123 through which the primary and secondary fusion vacuum circuit breaker knife switch 3 can pass, and the primary and secondary fusion vacuum circuit breaker knife switch 3 enters the protective cover body 11 through the opening 123; after the primary and secondary fusion vacuum circuit breaker knife switch 3 completely enters the protective cover body 11, the two limit plates 121 are reset to close the opening 123.

[0028] Specifically, Figure 3 As shown, Figure 3 The overall schematic diagram of the insulation protection device of the present application. Through the slidable connection between the first protection shell 111 and the second protection shell 113, the protection area and protection volume of the protection cover body 11 can be expanded, and when facing different specifications and models of primary and secondary fusion vacuum circuit breaker switches 3, the protection cover body 11 can be flexibly adjusted according to the size of the switch, thereby improving the flexibility and adaptability of the insulation protection device of the present application.

[0029] Furthermore, in the original state where the primary and secondary fusion vacuum circuit breaker knife switch 3 is not placed or the primary and secondary fusion vacuum circuit breaker knife switch 3 has been completely placed into the protective cover body 11, the two limit plates 121 abut against each other and form an all-round protective cover body 11 with the first protective shell 111 and the second protective shell 113. In the process of the primary and secondary fusion vacuum circuit breaker knife switch 3 entering the protective cover body 11, the primary and secondary fusion vacuum circuit breaker knife switch 3 continuously pushes the two limit plates 121 to rotate, and the torsion spring device 122 abuts against the limit plates 121 to form an opening 123 through which the primary and secondary fusion vacuum circuit breaker knife switch 3 can pass, thereby allowing the primary and secondary fusion vacuum circuit breaker knife switch 3 to completely enter the protective cover body 11, and finally the elastic deformation of the torsion spring device 122 causes the two limit plates 121 to reset to close the opening 123, and finally allows the knife switch to enter the protective cover body 11 of the insulation protection device, so that the protective cover body 11 effectively insulates the knife switch.

[0030] Therefore, the present application allows the knife switch to enter the protective cover 11 without disassembling the insulating protection device, thereby solving the problem of high complexity of knife switch protection in the prior art. At the same time, the flexible adaptability of the insulating protection device of the present application can be used to perform insulation protection on knife switches of various specifications.

[0031] Further, the limiting plate 121 includes a rotating shaft 1211, a rotatable plate 1212 and two positioning blocks 1213 provided on the rotatable plate 1212, both ends of the rotating shaft 1211 are connected to the first protective shell 111, and the rotatable plate 1212 is connected to the rotating shaft 1211; When the opening 123 is closed, the two positioning blocks 1213 are in contact with each other.

[0032] See also Figure 4 As shown, Figure 4 It is a schematic diagram of the limit plate 121 and the protective cover body 11 in the closed state of the opening 123. The closed state of the opening 123 can be divided into two situations. The first situation is the original state where the primary and secondary fusion vacuum circuit breaker switch 3 is not placed, and the second situation is the situation where the primary and secondary fusion vacuum circuit breaker switch 3 has been completely placed into the protective cover body 11. The two ends of the rotating shaft 1211 are rotatably connected to the first protective shell 111, so that the rotatable plate 1212 can be rotated through the rotating shaft 1211, thereby forming an open opening 123 to allow the primary and secondary fusion vacuum circuit breaker switch 3 to enter the protective cover body 11.

[0033] Further, the torsion spring device 122 includes a winding portion 1221, an extension portion 1222 connected to the winding portion 1221, and a bending portion 1223 connected to one end of the extension portion 1222, the winding portion 1221 is wound around the rotating shaft 1211, and the extension portion 1222 is in contact with the rotatable plate 1212; Among them, in the process of the primary and secondary fusion vacuum circuit breaker knife switch 3 entering the protective cover body 11, the rotatable plates 1212 of the two limit plates 121 rotate and the bending portion 1223 abuts against the rotatable plates 1212, so that the two rotatable plates 1212 are continuously opened to form the opening 123, and the opening 123 is used to allow the primary and secondary fusion vacuum circuit breaker knife switch 3 to pass completely.

[0034] Specifically, see Figure 5 As shown, Figure 5 The figure is a schematic diagram of the position connection between the torsion spring device 122 and the limit plate 121 when the knife switch pushes the limit plate 121 into the protective cover body 11. In the process of the primary and secondary fusion vacuum circuit breaker knife switch 3 entering the protective cover body 11, the rotatable plate 1212 rotates through the rotating shaft 1211 under the pushing action of the primary and secondary fusion vacuum circuit breaker knife switch 3, and the bending portion 1223 of the torsion spring device 122 is not in contact with the rotatable plate 1212 in the original state, but as the rotatable plate 1212 continues to rotate, the bending portion 1223 contacts the rotatable plate 1212, and after the contact, the primary and secondary fusion vacuum circuit breaker knife switch 3 can also continuously push the rotatable plate 1212 to rotate so that the rotatable plate 1212 and the torsion spring device 122 move together, so that the area of ​​the opening 123 is larger, so as to accommodate the primary and secondary fusion vacuum circuit breaker knife switch 3 with a larger size. Of course, the primary and secondary fusion vacuum circuit breaker switch 3 of a smaller size may be able to completely enter the protective cover body 11 without the torsion spring device 122 contacting the rotatable plate 1212. Fig.12 As shown, Fig.12 It is a specific schematic diagram of the torsion spring device 122 and the limiting device 12.

[0035] Furthermore, the first protective shell 111 includes an arch-shaped protective shell 1111, an intermediate protective shell 1112 and a square protective shell 1113, the arch-shaped protective shell 1111 and the square protective shell 1113 are respectively arranged at two ends of the intermediate protective shell 1112, and the square protective shell 1113 is slidably connected to the second protective shell 113.

[0036] Specifically, see Figure 6 As shown, Figure 6This is a schematic diagram of the first protective shell 111. Through the arch-shaped protective shells 1111 at both ends and the square protective shell, the two ends of the primary and secondary fusion vacuum circuit breaker knife switch 3 can be insulated and protected. If the second protective shell 113 is needed to expand the protection volume, then the second protective shell 113 and the arch-shaped protective shell 1111 are used to insulate and protect the two ends of the primary and secondary fusion vacuum circuit breaker knife switch 3.

[0037] Furthermore, the intermediate protective shell 1112 includes a top 11121 and two side lateral extensions 11122, the sliding groove 112 is arranged at the top 11121, and the two ends of the top 11121 are respectively connected to the arch-shaped protective shell 1111 and the square-shaped protective shell 1113; the lateral extensions 11122 are located below the top 11121 and connected to the top 11121, and the two ends of the lateral extensions 11122 are respectively connected to the arch-shaped protective shell 1111 and the square-shaped protective shell 1113.

[0038] Specifically, see Figure 6 As shown, a sliding groove 112 is provided on the top 11121 of the intermediate protective housing 1112, and a sliding groove 112 is also provided on the top of the square protective housing 1113, that is, the sliding groove 112 extends from the top 11121 of the intermediate protective housing 1112 to the top of the square protective housing 1113. The lateral extension 11122 is located below the top 11121 and is used to expand the area of ​​the protective cover 11 laterally, so as to provide insulation protection for knife switches of larger sizes.

[0039] Furthermore, the sliding groove 112 includes a sliding connecting portion 1121 and a limiting portion 1122, the sliding connecting portion 1121 is connected to the limiting portion 1122, when the protruding block 114 is located in the limiting portion 1122, the second protective shell 113 is embedded in the square protective shell 1113 and fixedly connected to the square protective shell 1113; when the protruding block 114 is located in the sliding connecting portion 1121, the second protective shell 113 is slidably connected to the square protective shell 1113.

[0040] Specifically, see Figure 6As shown, the sliding groove 112 extends from the top 11121 of the middle protective shell 1112 to the top of the square protective shell 1113. The limiting portion 1122 in the sliding groove 112 is used to place the protruding block 114. In the embodiment of the present application, the number of the protruding blocks 114 is 2. When the protruding block 114 is placed in the limiting portion 1122, the position between the first protective shell 111 and the second protective shell 113 can be limited to a certain extent, and the sliding connection is converted into a fixed connection. When the protruding block 114 is in the sliding connecting portion 1121, the protruding block 114 can slide freely in the sliding connecting portion 1121, so as to adjust the expansion area and volume of the second protective shell 113. See Figure 7 As shown, Figure 7 It is a schematic diagram of the state where the second protective shell 113 is extended.

[0041] Furthermore, the adjusting device 2 includes a door-shaped clamping device 21 and an adjusting rod device 22 , the adjusting rod device 22 is fixedly connected to the door-shaped clamping device 21 , and the door-shaped clamping device 21 is connected to the arch-shaped protective shell 1111 .

[0042] Reference Figure 8 As shown, Figure 8 This is a specific structural diagram of the adjusting device 2. Through the connection between the adjusting rod device 22 and the door-shaped clamping device 21, the adjusting rod device 22 can be disassembled and assembled. After the assembly position and angle are adjusted, the position and angle of the door-shaped clamping device 21 can be adjusted, that is, the position and angle of the arch-shaped protective shell 1111 connected to the door-shaped clamping device 21 can also be adjusted.

[0043] Furthermore, the adjusting rod device 22 includes a connecting rod 221, an assembly block 222 provided at one end of the connecting rod 221 and a fixing block 223 provided at the other end of the connecting rod 221; the fixing block 223 is fixedly connected to the top of the door-shaped clamping device 21.

[0044] Specifically, the flexible adjustment angle and corresponding position adjustment of the adjustment rod device 22 can be increased by further equipping the connecting rod with the equipping block. Fig. 9 As shown, Fig. 9 2 is a schematic diagram of the internal structure of the fixed block 223, in which the fixed block 223 can be freely disassembled and assembled, and the assembly method can be pre-adjusted so that the relative angle between the assembled fixed block 223 and the door-shaped clamping device 21 reaches the desired target angle, so that during the process of placing the primary and secondary fused vacuum circuit breaker knife switch 3 into the protective cover body 11, there is no need to adjust the angle and position, and the situation in which the primary and secondary fused vacuum circuit breaker knife switch 3 cannot enter the protective cover body 11 due to inappropriate angle and position can be avoided.

[0045] Furthermore, the door-shaped clamping device 21 includes a door-shaped shell 211, a screw fixing device 212 and two clamping extensions 213 extending into the door-shaped shell 211; the door-shaped shell 211 is connected to the two clamping extensions 213, and the screw fixing device 212 passes through the door-shaped shell 211 and is connected to the clamping extensions 213 and the arch-shaped protective shell 1111, so as to clamp and fix the arch-shaped protective shell 1111.

[0046] See also Fig.10 As shown, Fig.10 This is an unassembled drawing of the parts of the door-shaped clamping device 21, wherein the door-shaped shell 211 is connected to the two clamping extensions 213, and the screw fixing device 212 passes through the door-shaped shell 211 and is connected to the clamping extensions 213 and the arch-shaped protective shell 1111, so as to clamp and fix the arch-shaped protective shell 1111.

[0047] Furthermore, the screw fixing device 212 includes a screw rod 2121, a spring 2122 and a bolt 2123, wherein the bolt 2123 is arranged on the clamping extension portion 213 and contacts the arch-shaped protective shell 1111; the spring 2122 is arranged on the screw rod 2121, the screw rod 2121 passes through the door-shaped shell 211 and is threadedly connected to the bolt 2123, wherein the arch-shaped protective shell 1111 is clamped by the screw rod 2121 and the clamping extension portion 213.

[0048] Reference Fig.11 As shown, Fig.11 This is a schematic diagram after all parts of the door-shaped clamping device 21 are assembled. At this time, the screw 2121 is threadedly connected with the bolt 2123. The screw 2121 rotates continuously, pushing the bolt 2123 to continuously squeeze the arch-shaped protective shell 1111 sandwiched between the bolt 2123 and the clamping extension 213, so as to clamp the arch-shaped protective shell 1111. When disassembling, it is only necessary to rotate the bolt 2123 to loosen the threaded connection with the bolt 2123, and the spring 2122 on the screw 2121 will reset, pushing the screw 2121 to move outward, thus reducing the complexity of disassembly. It is only necessary to gently twist the screw 2121 to release the connection with the bolt 2123, and the spring 2122 will automatically realize the disassembly of the screw 2121 and the bolt 2123 due to deformation reset.

[0049] Fig.12 It is a schematic diagram of the interior of the protective cover body 11 without the limit device 12, wherein the protective cover body 11 can be used to accommodate the primary and secondary fusion vacuum circuit breaker switch 3.

[0050] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to the exemplary embodiment of the present application, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously in multiple modules.

[0051] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be performed without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. An insulation protection device for a primary and secondary fusion vacuum circuit breaker switch, characterized in that: The device comprises a protective device and an adjusting device, wherein the protective device comprises a protective cover body and a limiting device arranged at the lower end of the protective cover body; The protective cover body comprises a first protective shell and a second protective shell, the top of the first protective shell is provided with a sliding groove, the top of the second protective shell is provided with a protruding block, the protruding block is arranged in the sliding groove so that the first protective shell and the second protective shell can be slidably connected; The limiting device includes two symmetrical limiting plates and a torsion spring device, the two limiting plates abut against each other; the limiting plates are slidably connected to the first protective shell, and the torsion spring device is wound around the limiting plates and connected to the side wall of the first protective shell; Among them, during the process of the primary and secondary fused vacuum circuit breaker knife switch entering the protective cover body, the primary and secondary fused vacuum circuit breaker knife switch continuously pushes the two limit plates to rotate, and the torsion spring device abuts against the limit plates to form an opening through which the primary and secondary fused vacuum circuit breaker knife switch can pass, and the primary and secondary fused vacuum circuit breaker knife switch enters the protective cover body through the opening; after the primary and secondary fused vacuum circuit breaker knife switch completely enters the protective cover body, the two limit plates are reset to close the opening.

2. The insulation protection device for the primary and secondary fusion vacuum circuit breaker switch according to claim 1 is characterized in that: The limiting plate includes a rotating shaft, a rotatable plate, and two positioning blocks arranged on the rotatable plate, the two ends of the rotating shaft are connected to the first protective shell, and the rotatable plate is connected to the rotating shaft; Wherein, when the opening is closed, the two positioning blocks are in contact with each other.

3. The insulation protection device for the primary and secondary fusion vacuum circuit breaker switch according to claim 2 is characterized in that: The torsion spring device comprises a winding portion, an extension portion connected to the winding portion, and a bending portion connected to one end of the extension portion, the winding portion is wound around the rotating shaft, and the extension portion is in contact with the rotatable plate; Among them, in the process of the primary and secondary fusion vacuum circuit breaker knife switch entering the protective cover body, the rotatable plates of the two limit plates rotate and the bending portion abuts against the rotatable plates, so that the two rotatable plates are continuously opened to form the opening, and the opening is used to allow the primary and secondary fusion vacuum circuit breaker knife switch to pass completely.

4. The insulation protection device for the primary and secondary fusion vacuum circuit breaker switch according to claim 3 is characterized in that: The first protective shell includes an arch-shaped protective shell, an intermediate protective shell and a square-shaped protective shell. The arch-shaped protective shell and the square-shaped protective shell are respectively arranged at two ends of the intermediate protective shell. The square-shaped protective shell is slidably connected to the second protective shell.

5. The insulation protection device for the primary and secondary fusion vacuum circuit breaker switch according to claim 4 is characterized in that: The intermediate protective shell includes a top and two lateral extensions, the sliding groove is arranged at the top, and the two ends of the top are respectively connected to the arch-shaped protective shell and the square-shaped protective shell; the lateral extension is located below the top and connected to the top, and the two ends of the lateral extension are respectively connected to the arch-shaped protective shell and the square-shaped protective shell.

6. The insulation protection device for the primary and secondary fusion vacuum circuit breaker switch according to claim 4 is characterized in that: The sliding groove includes a sliding connecting portion and a limiting portion, the sliding connecting portion is connected to the limiting portion, when the protruding block is located at the limiting portion, the second protective shell is embedded in the square protective shell and fixedly connected to the square protective shell; when the protruding block is located at the sliding connecting portion, the second protective shell is slidably connected to the square protective shell.

7. The insulation protection device for the primary and secondary fusion vacuum circuit breaker switch according to claim 4 is characterized in that: The adjusting device comprises a door-shaped clamping device and an adjusting rod device, wherein the adjusting rod device is fixedly connected to the door-shaped clamping device, and the door-shaped clamping device is connected to the arch-shaped protective shell.

8. The insulation protection device for the primary and secondary fusion vacuum circuit breaker switch according to claim 7 is characterized in that: The regulating rod device comprises a connecting rod, an assembly block arranged at one end of the connecting rod and a fixing block arranged at the other end of the connecting rod; the fixing block is fixedly connected to the top of the door-shaped clamping device.

9. The insulation protection device for the primary and secondary fusion vacuum circuit breaker switch according to claim 8, characterized in that: The door-shaped clamping device includes a door-shaped shell, a screw fixing device and two clamping extensions extending into the door-shaped shell; the door-shaped shell is connected to the two clamping extensions, and the screw fixing device passes through the door-shaped shell and is connected to the clamping extensions and the arch-shaped protective shell, so as to clamp and fix the arch-shaped protective shell.

10. The insulation protection device for the primary and secondary fusion vacuum circuit breaker switch according to claim 9, characterized in that: The screw fixing device includes a screw rod, a spring and a bolt, wherein the bolt is arranged on the clamping extension portion and is in contact with the arch-shaped protective shell; the spring is arranged on the screw rod, the screw rod passes through the door-shaped shell and is threadedly connected to the bolt, wherein the arch-shaped protective shell is clamped by the screw rod and the clamping extension portion.

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