disconnector

Abstract

The application discloses an isolating switch, which comprises a fixed seat and a switch body, two supporting columns are arranged on the fixed seat, the switch body comprises a knife switch, a first contact piece and a second contact piece, the first contact piece is arranged on one of the supporting columns, and the second contact piece is arranged on the other supporting column; the second contact piece comprises a first piece body and a first connecting piece arranged on the first piece body, the first connecting piece has two contact surfaces; the knife switch comprises two second piece bodies and a first elastic piece arranged between the two second piece bodies, the first elastic piece enables the two second piece bodies to have a moving trend of approaching each other, one end of the knife switch is rotationally connected with the first contact piece, and the other end of the knife switch can clamp the first connecting piece through the two second piece bodies. The first connecting piece is clamped by the two second piece bodies, the inner side surfaces of the two second piece bodies are connected with the two contact surfaces respectively, the contact area of the knife switch and the second contact piece is increased, and the knife switch and the second contact piece are clamped, so that the switching operation of the isolating switch is simplified.

Description

Technical Field

[0001] This invention relates to the field of power equipment, and more particularly to a disconnecting switch. Background Technology

[0002] A disconnector is a switching device mainly used for "isolating power supply, switching operations, and connecting and disconnecting small current circuits" without arc extinguishing function; it is mainly used as a high-voltage disconnector in high-voltage transmission and distribution lines.

[0003] Currently, disconnecting switches mainly rely on the separation or contact of contacts on the knife switch and contact plates to achieve isolation and conduction of high-voltage transmission and distribution lines. However, in existing disconnecting switches, the knife switch and contact plates are usually in linear contact, with a small contact area. When the disconnecting switch is in contact and conducting, the resistance is high, which can easily cause the contact plates to overheat and thus damage the disconnecting switch. Moreover, in order to ensure connection stability, the knife switch and contact plates are generally connected by spring screws, but when the knife switch and contact plates are separated or made in contact, the spring screws need to be manually tightened, which is cumbersome and has low switching efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a disconnecting switch that can increase the contact area between the knife switch and the contact piece, and at the same time improve the opening and closing efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Provides a disconnecting switch, comprising:

[0007] A fixing base, wherein two opposing insulated support columns are provided on the fixing base;

[0008] The switch body includes a knife switch, a first contact, and a second contact. The first contact is disposed on one of the support columns, and the second contact is disposed on the other support column.

[0009] The second contact includes a first sheet body and a first connector disposed on the first sheet body, the first connector having two opposing contact surfaces;

[0010] The knife switch includes two parallel and spaced second pieces, with a first elastic element disposed between the two second pieces. The first elastic element drives the two second pieces to move closer together. One end of the knife switch is rotatably connected to the first contact piece, and the other end of the knife switch can clamp the first connecting piece through the two second pieces, so that the inner surfaces of the two second pieces are respectively connected to the two contact surfaces.

[0011] As a preferred embodiment of the disconnecting switch, the first elastic element includes two arc-shaped first spring pieces with their arc-shaped openings facing each other. The opposite ends of one of the first spring pieces are respectively connected to the opposite ends of the other first spring piece, and the opposite sides of the two first spring pieces are respectively connected to the inner sides of the two second pieces.

[0012] As a preferred embodiment of the disconnecting switch, the first connecting member includes two first support members spaced apart along the length direction of the first piece and two second spring pieces spaced apart along the width direction of the first piece. All the second spring pieces are located between the two first support members. The second piece can be clamped on the side of the first support member and the side of the second spring piece at the same time. The second spring piece can drive the two second pieces to always have a tendency to move in opposite directions.

[0013] As a preferred embodiment of the disconnecting switch, the first connecting member further includes a first connecting rod and a limiting member. Each of the second spring pieces has a connecting hole at the end away from the first piece. One end of the first connecting rod can pass through the connecting holes of the two second spring pieces in sequence. Both ends of the first connecting rod are provided with the limiting member to restrict the second spring pieces on the first connecting rod. The outer peripheral wall of the first connecting rod is also sleeved with a second elastic member. The second elastic member abuts between the two second spring pieces and drives the second spring pieces to have a tendency to move in opposite directions.

[0014] As a preferred embodiment of the disconnecting switch, the first support member includes a first arc-shaped guide portion and a first abutting portion, the first abutting portion connecting the first arc-shaped guide portion and the first sheet body, and the arc-shaped opening of the first arc-shaped guide portion protruding outward toward the outside of the first support member;

[0015] And / or, the second spring includes a second arc-shaped guide portion and a second abutment portion, the first abutment portion connects the second arc-shaped guide portion and the first piece body, and the arc-shaped openings of the second arc-shaped guide portions of the two springs are arranged opposite to each other.

[0016] As a preferred embodiment of the disconnecting switch, a second support member is provided on both sides of the first sheet in the width direction, and the second support member can abut against the bottom surface of the second sheet.

[0017] As a preferred embodiment of the disconnecting switch, two support columns are positioned opposite each other along a first direction to form a support column group, and multiple support column groups are spaced apart on the fixed base along a second direction. The first direction and the second direction are perpendicular to each other, and each support column group is provided with a switch body.

[0018] As a preferred embodiment of the disconnecting switch, it further includes an opening and closing mechanism, which includes a rotating rod, a second connecting member, and a second connecting rod. The rotating rod is rotatably mounted on the fixed base. One end of the second connecting rod is connected to the rotating rod, and the other end is connected to the second connecting member. The end of the second connecting member away from the second connecting rod is rotatably connected to the knife switch of one of the switch bodies. The rotation of the rotating rod can drive the second connecting rod to rotate synchronously, and drive the second connecting member and the knife switch to rotate.

[0019] As a preferred embodiment of the disconnecting switch, the opening and closing mechanism further includes a linkage shaft. Each knife switch of the switch body is connected to the linkage shaft. Multiple second connecting members and second connecting rods are provided. One end of each second connecting member is connected to a second connecting rod, and the other end is connected to the knife switch through the linkage shaft.

[0020] As a preferred embodiment of the disconnecting switch, the fixed base is provided with a bearing seat, and the rotating rod is rotatably mounted on the fixed base through the bearing seat.

[0021] The beneficial effects of this invention are as follows: Two parallel and spaced second plates are clamped by a first elastic element to the first connecting member, which enables the knife switch to contact the second contact surface, thereby increasing the contact area, reducing the resistance of the second contact when it is conducting, reducing the heat generation of the second contact, and thus extending the service life of the disconnecting switch; moreover, one end of the knife switch is rotatably connected to the first contact, and the other end can selectively allow the two second plates to clamp the first connecting member to achieve a snap-fit ​​connection with the second contact, which not only ensures the stability of the connection between the knife switch and the second contact, but also eliminates the need to connect the knife switch and the second contact with screws, which helps to simplify the opening and closing operation of the disconnecting switch, thereby improving the opening and closing efficiency. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a perspective view of the disconnecting switch according to an embodiment of the present invention.

[0024] Figure 2 This is a perspective view of the knife switch according to an embodiment of the present invention.

[0025] Figure 3 This is a perspective view of the second contact piece according to an embodiment of the present invention.

[0026] In the picture:

[0027] 1. Fixed base; 2. Support column; 3. Knife switch; 31. Second plate; 32. First elastic element; 321. First spring; 4. First contact piece; 5. Second contact piece; 51. First plate; 52. First connecting piece; 521. Second spring; 5211. Second arc-shaped guide part; 5212. Second abutment part; 5213. Connecting part; 522. First support member; 5221. First arc-shaped guide part; 5222. First abutment part; 523. First connecting rod; 524. Limiting member; 525. Second elastic element; 53. Second support member; 6. Bearing seat; 7. Rotary handle; 8. Rotating rod; 9. Second connecting piece; 10. Second connecting rod; 11. Linkage shaft. Detailed Implementation

[0028] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] like Figures 1 to 3 As shown, the present invention provides a disconnecting switch, comprising a fixed base 1 and a switch body. The fixed base 1 has two oppositely arranged insulated support columns 2. The switch body includes a knife switch 3, a first contact 4, and a second contact 5. The first contact 4 and the second contact 5 are respectively connected to the conductors of the transmission line. The knife switch 3 is used to selectively conduct the first contact 4 and the second contact 5 to realize the switching on and off of the transmission line. The first contact 4 is disposed on one of the support columns 2, and the second contact 5 is disposed on the other support column 2. The support columns 2 can insulate and isolate the fixed base 1 and the switch body to prevent the fixed base 1 from conducting electricity.

[0031] The second contact 5 includes a first piece 51 and a first connector 52 disposed on the first piece 51. The outer side of the first connector 52 has two opposing contact surfaces. The knife switch 3 includes two parallel and spaced second pieces 31. A first elastic member 32 is disposed between the two second pieces 31. The first elastic member 32 drives the two second pieces 31 to move closer together. One end of the knife switch 3 is rotatably connected to the first contact 4. The other end of the knife switch 3 can clamp the first connector 52 through the two second pieces 31, so that the inner surfaces of the two second pieces 31 respectively abut against the two contact surfaces. The contact surfaces can contact the second pieces 31 to electrically conduct the first contact 4 and the second contact 5.

[0032] Understandably, the disconnector 3 has an open state and a closed state. When the disconnector 3 is in the closed state, it can rotate relative to the first contact piece 4, so that the end of the disconnector 3 away from the first contact piece 4 is connected to the second contact piece 5. At this time, the first connecting member 52 can overcome the elastic force of the first elastic member 32 and insert into the gap between the two second pieces 31. At the same time, the two second pieces 31 have a tendency to move closer together under the action of the first elastic member 32, thereby clamping the first connecting member 52, so that the inner surfaces of the two second pieces 31 can keep in contact with the two contact surfaces respectively. When the disconnector 3 is in the open state, it can rotate in the opposite direction, directly separating the end of the disconnector 3 away from the first contact piece 4 from the second contact piece 5. The first contact piece 4 and the second contact piece 5 are not conductive, thereby disconnecting the power transmission line.

[0033] This design, by clamping the first connector 52 with two plates, enables the knife switch 3 to contact the second contact piece 5, increasing the contact area and thus reducing the resistance of the second contact piece 5 when it is conducting, reducing the heat generated by the second contact piece 5, and extending the service life of the disconnecting switch. Moreover, it enables the knife switch 3 and the second contact piece 5 to be snapped together, which not only ensures the stability of the connection between the knife switch 3 and the second contact piece 5, but also eliminates the need to connect the knife switch 3 and the second contact piece 5 with screws, thereby simplifying the opening and closing operation of the disconnecting switch and improving the opening and closing efficiency.

[0034] Optionally, the support column 2 can be a ceramic column or an insulator.

[0035] For example, refer to Figure 2 The two plates are connected to the first contact plate 4 via a rotating shaft (not shown in the figure), thereby realizing the rotatable connection between the knife switch 3 and the first contact plate 4.

[0036] Preferred, such as Figure 2As shown, the first elastic element 32 is disposed at one end of the knife switch 3 adjacent to the second contact piece 5 (the suspended end of the knife switch 3). The first elastic element 32 mainly acts on the two pieces near the second contact piece 5 to ensure that the two pieces near the second contact piece 5 can clamp the first connecting member 52, while reducing the influence of the first elastic element 32 on the two pieces near the first contact piece 4, so as to ensure the reliability of the connection between the knife switch 3 and the first contact piece 4.

[0037] For example, such as Figure 2 As shown, the first elastic element 32 is a leaf spring. Specifically, the first elastic element 32 includes two arc-shaped first spring pieces 321, with their arc-shaped openings facing each other. The opposite ends of one first spring piece 321 are connected to the opposite ends of the other first spring piece 321, and the opposing sides of the two first spring pieces 321 are connected to the inner sides of the two second plates 31. During the process of the two plates clamping the first connecting member 52, the first connecting member 52 can overcome the elastic force of the first spring piece 321 to compress the two second plates 31, causing the two second plates 31 to have a tendency to move away from each other, and driving the first spring piece 321 to deform. Therefore, the elastic force of the two first spring pieces 321 can be used to clamp the two second plates 31 to the first connecting member 52. This design can reduce the thickness of the first elastic element 32 in the opposite direction of the two second pieces 31, so that the first elastic element 32 is located in the narrow gap between the two second pieces 31, and still has enough elastic force to drive the two second pieces 31 to clamp the first connector 52.

[0038] Of course, in other embodiments, the first elastic element 32 can also be a spring. Due to the narrow gap between the two second plates 31, the length of the spring cannot be set too long, and the elastic force of a single spring is small. Therefore, when the first elastic element 32 is a spring, multiple first elastic elements 32 are spaced apart between the two plates along their own length direction to ensure that the first elastic element 32 has sufficient elastic force in the relative direction of the two second plates 31.

[0039] Furthermore, such as Figure 1 and Figure 3 As shown, the first connector 52 includes two first support members 522 and two second spring contacts 521. The two first support members 522 are spaced apart along the length of the first piece 51, and the two second spring contacts 521 are spaced apart along the width of the first piece 51. All the second spring contacts 521 are located between the two first support members 522. The second piece 31 can simultaneously clamp onto the side of the first support member 522 and the side of the second spring contact 521 to further increase the contact area between the knife switch 3 and the second contact 5 and reduce the resistance when the second contact 5 is turned on.

[0040] Furthermore, the two second spring pieces 521 can drive the two second pieces 31 to move in opposite directions, and the elastic force direction of the second spring pieces 521 is opposite to the elastic force direction of the first elastic member 32. Therefore, the first connector 52 and the knife switch 3 can abut against each other under the action of the first elastic member 32 and the second spring pieces 521, so as to improve the connection stability of the first connector 52 and the knife switch 3.

[0041] Furthermore, such as Figure 3 As shown, the first connecting member 52 also includes a first connecting rod 523 and a limiting member 524. Each of the second spring pieces 521 has a connecting portion 5213 at the end away from the first piece 51. The connecting portion 5213 has a connecting hole. One end of the first connecting rod 523 can pass through the connecting holes of the two second spring pieces 521 in sequence. Both ends of the first connecting rod 523 are provided with limiting members 524 to restrict the second spring pieces 521 on the first connecting rod 523, so as to avoid the two second spring pieces 521 expanding outward at too large an angle, which would cause the distance between the connecting portions 5213 of the two second spring pieces 521 to be too large, and to prevent the distance between the connecting portions 5213 of the two second spring pieces 521 from being greater than the distance between the two second pieces 31. The connecting portions 5213 of the two second spring pieces 521 can slide between the first connecting rod 523 and the two limiting members 524 to ensure that the two second spring pieces 521 have a certain space to undergo elastic deformation.

[0042] The outer peripheral wall of the first connecting rod 523 is also fitted with a second elastic element 525. The second elastic element 525 abuts against the connecting portion 5213 of the two second spring pieces 521, and the second elastic element 525 drives the second spring pieces 521 to always have a tendency to move in opposite directions. When the second plate 31 clamps the second spring piece 521, the second spring piece 521 can always remain in close contact with the second plate 31 under the action of the second elastic element 525, further improving the connection stability of the first connecting member 52 and the knife switch 3.

[0043] When the two second spring pieces 521 are connected by the first connecting rod 523 and are provided with the second elastic element 525, if the second piece 31 only clamps the second spring piece 521, the end of the second spring piece 521 away from the first piece 51 is prone to approaching each other due to external environmental influences (such as vibration), causing poor contact between the second spring piece 521 and the second piece 31. However, the first support member 522 is inelastic and will not deform under the influence of external environmental influences. Therefore, the first piece 51 can always be close to the second support member 53 to prevent poor contact between the knife switch 3 and the second contact piece 5.

[0044] For example, the limiting member 524 is a limiting nut, and the first connecting rod 523 is provided with threads. The first connecting rod 523 is threadedly connected to the limiting member 524 to facilitate the connection of the first connecting member 52 to the two second spring pieces 521.

[0045] Optional, such as Figure 3 As shown, the first support member 522 includes a first arc-shaped guide portion 5221 and a first abutting portion 5222. The first abutting portion 5222 connects the first arc-shaped guide portion 5221 and the first piece 51. The first arc-shaped guide portion 5221 protrudes outward toward the outside of the first support member 522, that is, from the direction away from the first abutting portion 5222 toward the direction closer to the first abutting portion 5222, the first arc-shaped guide portion 5221 gradually expands.

[0046] And / or, the second spring 521 includes a second arc-shaped guide portion 5211 and a second abutting portion 5212, the first abutting portion 5222 connects the second arc-shaped guide portion 5211 and the first piece 51, one end of the second arc-shaped guide portion 5211 away from the second abutting portion 5212 is connected to the connecting portion 5213, and the arc-shaped openings of the second arc-shaped guide portions 5211 of the two second springs 521 are arranged opposite to each other.

[0047] During the process of inserting the first connector 52 into the gap between the two second pieces 31, the first arc-shaped guide portion 5221 and the second arc-shaped guide portion 5211 can both be inserted into the gap between the two second pieces 31 first, and gradually squeeze the two second pieces 31 apart, so that the two pieces can smoothly clamp the first abutment portion 5222 and the second abutment portion 5212 at the same time.

[0048] Specifically, the first piece 51 has a second support member 53 protruding from both sides of the two second spring pieces 521 in opposite directions. When the second piece 31 clamps the first connector 52, the second support member 53 can abut against the bottom surface of the second piece 31 to support the second piece 31 and prevent the second piece 31 from detaching from the first connector 52.

[0049] Specifically, such as Figure 1 As shown, the disconnect switch also includes an opening and closing mechanism, which includes a rotating rod 8, a second connecting member 9, and a second connecting rod 10. The rotating rod 8 is rotatably mounted on the fixed base 1. One end of the second connecting rod 10 is connected to the rotating rod 8, and the other end is connected to the second connecting member 9. The end of the second connecting member 9 away from the second connecting rod 10 is rotatably connected to the knife switch 3. The rotation of the rotating rod 8 can drive the second connecting rod 10 to rotate synchronously, and drive the second connecting member 9 and the knife switch 3 to rotate, thereby realizing the opening and closing of the switch.

[0050] For example, the second connector 9 is a ceramic post or insulator.

[0051] In this embodiment, as Figure 1 As shown, two support columns 2 are opposite each other along the first direction (x direction in the figure) and form a support column group. Multiple support column groups are spaced apart on the fixed base 1 along the second direction (y direction in the figure). The first direction and the second direction are perpendicular to each other. Each support column group is equipped with a switch body.

[0052] Furthermore, the opening and closing mechanism also includes a linkage shaft 11. Each switch body's knife switch 3 is connected to the linkage shaft 11. Multiple second connecting pieces 9 and second connecting rods 10 are provided. All second connecting pieces 9 are aligned along a second direction and arranged at intervals. Multiple second connecting rods 10 are provided on the rotating rod 8 corresponding to the positions of the second connecting pieces 9. One end of each second connecting piece 9 is connected to a second connecting rod 10, and the other end is connected to one of the switch bodies' knife switches 3 via the linkage shaft 11. Rotation of the rotating rod 8 can drive all the second connecting rods 10 to rotate synchronously, and thus drive all the second connecting pieces 9 to rotate synchronously, thereby enabling all knife switches 3 to rotate synchronously, and controlling all switch bodies to open or close simultaneously.

[0053] Optionally, the linkage shaft 11 may be made of insulating material, or the linkage shaft 11 may be insulated from all the knife switches 3 to ensure that each switch body is insulated from the others.

[0054] Optionally, a rotating handle 7 is provided at one end of the rotating rod 8 to facilitate driving the rotating rod 8 to rotate.

[0055] In another embodiment, one end of the rotating rod 8 is provided with a drive motor (not shown in the figure) with a self-locking function. The drive motor can drive the rotating rod 8 to rotate, so as to ensure that it is kept in the open or closed state. The drive motor is prior art and will not be described in detail here.

[0056] Furthermore, the disconnecting switch also includes a controller (not shown in the figure), which is communicatively connected to the drive motor. The disconnecting switch is typically installed outdoors, and the controller can remotely control the drive motor to perform opening or closing operations, eliminating the need for on-site operation, effectively reducing workload and improving work efficiency.

[0057] Specifically, such as Figure 1 As shown, at least one bearing seat 6 is also provided on the fixed base 1 along the second direction, and the rotating rod 8 is rotatably mounted on the fixed base 1 through the bearing seat 6.

[0058] Furthermore, the bearing housing 6 includes an insulated base and a bearing mounted on the base, with the rotating rod 8 connected to the bearing. The bearing housing 6 is insulated from the fixed base 1 to prevent the rotating rod 8 from conducting electricity.

[0059] For example, the base is a ceramic base.

[0060] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0061] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0062] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0063] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A disconnecting switch, characterized in that, include: A fixing base, wherein two opposing insulated support columns are provided on the fixing base; The switch body includes a knife switch, a first contact, and a second contact. The first contact is disposed on one of the support columns, and the second contact is disposed on the other support column. The second contact includes a first sheet body and a first connector disposed on the first sheet body, the first connector having two opposing contact surfaces; The knife switch includes two parallel and spaced second pieces, with a first elastic element disposed between the two second pieces. The first elastic element drives the two second pieces to move closer together. One end of the knife switch is rotatably connected to the first contact piece, and the other end of the knife switch can clamp the first connecting piece through the two second pieces, so that the inner surfaces of the two second pieces are respectively connected to the two contact surfaces. The first elastic element includes two arc-shaped first spring pieces with their arc-shaped openings facing each other. The opposite ends of one of the first spring pieces are respectively connected to the opposite ends of the other first spring piece, and the opposite sides of the two first spring pieces are respectively connected to the inner sides of the two second pieces. The first connector includes two first support members spaced apart along the length of the first piece and two second spring pieces spaced apart along the width of the first piece. All the second spring pieces are located between the two first support members. The second piece can be clamped on the side of the first support member and the side of the second spring piece at the same time. The second spring piece can drive the two second pieces to always have a tendency to move in opposite directions. The first connector further includes a first connecting rod and a limiting member. Each of the second spring pieces has a connecting hole at the end away from the first piece. One end of the first connecting rod can pass through the connecting holes of the two second spring pieces in sequence. Both ends of the first connecting rod are provided with the limiting member to restrict the second spring pieces on the first connecting rod. The outer peripheral wall of the first connecting rod is also sleeved with a second elastic member. The second elastic member abuts between the two second spring pieces and drives the second spring pieces to have a tendency to move in opposite directions.

2. The disconnecting switch according to claim 1, characterized in that, The first support member includes a first arc-shaped guide portion and a first abutting portion. The first abutting portion connects the first arc-shaped guide portion and the first sheet body. The first arc-shaped guide portion protrudes outward toward the outside of the first support member. And / or, the second spring includes a second arc-shaped guide portion and a second abutment portion, the second abutment portion connecting the second arc-shaped guide portion and the first piece body, and the arc-shaped openings of the second arc-shaped guide portions of the two second springs are arranged opposite to each other.

3. The disconnecting switch according to claim 1, characterized in that, The first sheet has two protruding second support members on its two sides in the width direction, and the second support members can abut against the bottom surface of the second sheet.

4. The disconnecting switch according to any one of claims 1 to 3, characterized in that, Two support columns are positioned opposite each other along a first direction to form a support column group. Multiple support column groups are spaced apart on the fixed base along a second direction. The first direction and the second direction are perpendicular to each other. Each support column group is provided with a switch body.

5. The disconnecting switch according to claim 4, characterized in that, It also includes an opening and closing mechanism, which includes a rotating rod, a second connecting member, and a second connecting rod. The rotating rod is rotatably mounted on the fixed base. One end of the second connecting rod is connected to the rotating rod, and the other end is connected to the second connecting member. The end of the second connecting member away from the second connecting rod is rotatably connected to the knife switch of the switch body. The rotation of the rotating rod can drive the second connecting rod to rotate synchronously, and drive the second connecting member and the knife switch to rotate.

6. The disconnecting switch according to claim 5, characterized in that, The opening and closing mechanism also includes an insulated linkage shaft. Each knife switch of the switch body is connected to the linkage shaft. Multiple second connecting members and second connecting rods are provided. One end of each second connecting member is connected to a second connecting rod, and the other end is connected to the knife switch through the linkage shaft.

7. The disconnecting switch according to claim 5, characterized in that, The fixed base is provided with a bearing seat, and the rotating rod is rotatably mounted on the fixed base through the bearing seat.

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