Knife switch structure of double-column V-shaped high-voltage isolation switch

Abstract

The invention relates to the technical field of high-voltage disconnecting switches, in particular to a knife switch structure of a double-column V-shaped high-voltage disconnecting switch, which comprises a base, a contact insulation support column provided with a contact mechanism and a contact finger insulation support column provided with a contact finger mechanism, and is characterized in that the contact insulation support column and the contact finger insulation support column are arranged on the base in a V shape; the contact mechanism comprises a contact conducting rod, a contact assembly and a contact connecting assembly, the contact connecting assembly is perpendicular to the contact insulating supporting column, and the contact conducting rod is horizontally arranged; the contact finger mechanism comprises a contact finger electric pole, a contact finger assembly and a contact finger connecting assembly, the contact finger connecting assembly is perpendicular to the contact finger insulation supporting column, and the contact finger electric pole is horizontally arranged; the high-voltage isolating switch is compact in structure and reliable in connection, gaps between conductive parts are reduced, birds are effectively prevented from nesting, meanwhile, the positions of the contact assemblies and the contact finger assemblies are adjustable, installation, maintenance and abrasion compensation are facilitated, and the operation safety and reliability of the high-voltage isolating switch are effectively improved.

Description

Technical Field

[0001] This invention relates to the technical field of high-voltage disconnect switches, and more specifically to a knife-end structure of a double-column V-type high-voltage disconnect switch. Background Technology

[0002] High-voltage disconnect switches are critical protection devices in power systems. They provide necessary isolation and disconnection functions during the operation, maintenance, and accident handling of power systems to ensure the safe and stable operation of the system. The "Guiding Opinions on High-Quality Development of Distribution Networks under the New Situation" requires that distribution networks have the ability to access new energy sources by 2025. Power grid companies tend to improve power supply capacity by optimizing existing facilities, thereby promoting the green transformation of enterprises.

[0003] With the development and transformation of the power system and the increase in power grid renovation projects, the number of frequent switching operations of GW5 high-voltage disconnect switches has increased, and the number of maintenance and repairs of the conductive mechanism has also increased.

[0004] The traditional GW5 high-voltage disconnector is a double-column horizontal rotary structure. Each pole has two insulating pillars that rotate 90° in opposite directions with the conductive blade, forming a horizontal break. The two pillars are mounted on a base at a 50° V-angle. In existing technology, the conductive mechanism of the GW5 high-voltage disconnector typically consists of a terminal block, conductive rod, contact finger support, and contact support. Because there are large gaps between the conductive rod and the contact mechanism and contact finger mechanism, birds can easily nest in these gaps. During actual maintenance, the presence of bird nests at the conductive mechanism affects the efficiency of maintenance and the safety of the operating circuit of the GW5 high-voltage disconnector.

[0005] When new parts need to be replaced, the installation dimensions between different manufacturers are often inaccurate, or the usage standards of different manufacturers are different, and the high-voltage disconnect switch itself is constantly being upgraded, which makes maintenance extremely inconvenient and hinders the improvement of the maintenance efficiency of the GW5 high-voltage disconnect switch.

[0006] Therefore, it is urgent to propose a new technical solution to address the problem. Summary of the Invention

[0007] (a) Technical problems to be solved Based on this, the present invention provides a knife-end structure for a double-column V-type high-voltage disconnect switch, which is simple and compact in structure and helps to improve the maintenance efficiency of the GW5 type high-voltage disconnect switch.

[0008] (II) Technical Solution To solve the above-mentioned technical problems, the present invention provides a knife switch structure for a double-column V-type high-voltage disconnector. This knife switch structure includes a contact mechanism comprising a base, a contact insulating support column with the contact mechanism, and a contact finger insulating support column with a contact finger mechanism. The contact insulating support column and the contact finger insulating support column are V-shapedly arranged on the base and rotate synchronously in opposite directions. The contact mechanism includes a contact conductive rod, a contact assembly movably disposed within the operating end of the contact conductive rod, and a contact connecting assembly connecting the top of the contact insulating support column to the contact conductive rod. The contact connecting assembly is connected to the contact insulating support column. The contact conductive rod is vertically positioned and horizontally arranged. The contact finger mechanism includes a contact conductive rod, a contact finger assembly movably disposed within the operating end of the contact conductive rod, and a contact finger connecting assembly connecting the top of the contact finger insulating support to the contact conductive rod. The contact finger connecting assembly is perpendicular to the contact finger insulating support, and the contact conductive rod is horizontally arranged. When the switch is in the closed state, the contact assembly extends into the contact finger assembly. When the switch is open, the contact insulating support and the contact finger insulating support rotate synchronously in opposite directions to drive the contact assembly to gradually rotate out of the contact finger assembly until it moves away from the contact finger assembly.

[0009] Preferably, the angle between the contact conductive rod and the contact connecting assembly is set at 25°~155°; the angle between the contact conductive rod and the contact connecting assembly is set at 25°~155°; a connecting rod is connected between the bottom of the contact insulating support and the bottom of the contact insulating support, and the connecting rod drives the contact insulating support and the contact insulating support to rotate synchronously in opposite directions.

[0010] Preferably, the contact connection assembly includes a contact mounting base fixedly disposed on the top of the contact insulating support, a contact connecting base fixedly disposed on the top of the contact mounting base, and a contact connecting arm protruding from the contact conductive rod toward the contact connecting base; the connecting end of the contact connecting arm is connected to the fixed end of the contact conductive rod, and the contact connecting arm is perpendicular to the contact insulating support; the contact finger connection assembly includes a contact finger mounting base fixedly disposed on the top of the contact finger insulating support, a contact finger connecting base fixedly disposed on the top of the contact finger mounting base, and a contact finger connecting arm protruding from the contact conductive rod toward the contact finger connecting base; the connecting end of the contact finger connecting arm is fixedly connected to the fixed end of the contact conductive rod, and the contact finger connecting arm is perpendicular to the contact finger insulating support.

[0011] Preferably, the contact assembly includes a contact support, a contact support extending from the contact support toward one end of the contact finger assembly, and a contact end plate fixed to the free end of the contact support; the contact conductive rod has a plurality of contact mounting holes at equal intervals along its length that match the contact support, and the contact support is movably disposed in the corresponding contact mounting holes on the contact conductive rod to adjust the length of the contact end plate extending from the operating end of the contact conductive rod; the contact finger assembly includes a contact finger support, a contact finger support extending from the contact finger support toward one end of the contact assembly, and a contact finger post. Rectangular contact plates extend from both sides of the contact support pillar. Each contact plate includes a first contact plate and a second contact plate, with connecting springs attached to the outer walls of the first and second contact plates. A plurality of contact mounting holes, matching the contact support base, are evenly spaced along the length of the contact guide rod. The contact support base is movably disposed within the corresponding contact mounting holes on the contact guide rod to adjust the length of the operating end of the contact plate extending from the contact guide rod. A clamping space is formed between the first and second contact plates to clamp the contact end plate.

[0012] Preferably, the contact plate is slightly longer than the connecting spring, and the connecting spring is used to provide elastic force for the first contact plate and the second contact plate to clamp the contact end plate; when the switch is closed, the contact end plate extends into the clamping space formed between the first contact plate and the second contact plate, and the connecting spring applies pressure to the outer walls of the first contact plate and the second contact plate so that the first contact plate and the second contact plate clamp inward.

[0013] Preferably, the first and second contact plates extend arc-shaped contact flaps from their ends near the contact assembly; each contact flap includes a first contact flap and a second contact flap, the width between the first and second contact flaps being slightly greater than the width of the contact end plate, so as to allow the contact support and the contact end plate on the contact support to extend into it; the width of the clamping space formed between the first and second contact plates is the same as the width of the contact end plate, so that the contact end plate extending into the clamping space abuts against the inner sidewalls of the first and second contact plates.

[0014] Preferably, the contact connecting arm includes a first contact extension and a second contact extension parallel to the first contact extension extending from the upper and lower sides of the end of the contact connecting arm near the contact connecting seat, the second contact extension being fixedly connected to the contact connecting seat; the contact connecting arm also includes a third contact extension extending from the side wall of the end of the contact connecting arm near the contact connecting seat, the third contact extension, the first contact extension, and the second contact extension forming a contact receiving cavity.

[0015] Preferably, the finger connecting arm includes a first finger extension and a second finger extension parallel to the first finger extension extending from the upper and lower sides of the end of the finger connecting arm near the finger connecting seat, respectively, and the second finger extension is fixedly connected to the finger connecting seat; the finger connecting arm also includes a third finger extension extending from the side wall of the end of the finger connecting arm near the finger connecting seat, and the third finger extension, the first finger extension, and the second finger extension form a finger receiving cavity.

[0016] Preferably, the contact connection assembly further includes a contact conductive shaft passing through the top of the contact receiving cavity, a contact terminal plate snapped onto the top of the contact conductive shaft, and a contact conductive strip fixedly disposed at the bottom of the contact conductive shaft and fixedly connected to the third contact extension of the contact receiving cavity.

[0017] Preferably, the finger connection assembly further includes a finger guide shaft passing through the top of the finger receiving cavity, a finger connector plate snapped onto the top of the finger guide shaft, and a finger guide strip fixedly disposed at the bottom of the finger guide shaft and fixedly connected to the third finger extension of the finger receiving cavity.

[0018] (III) Beneficial Effects Compared with the prior art, the present invention has at least the following technical effects: 1. The switch structure provided by the present invention adopts a double-column V-shaped arrangement, so that the contact insulation support and the contact finger insulation support can be synchronously rotated in opposite directions through the connecting rod, thereby driving the contact assembly and the contact finger assembly to perform opening and closing actions.

[0019] 2. The switch structure provided by this invention is compact and reasonable, reduces gaps between conductive components, effectively prevents birds from nesting, and improves the safety and reliability of high-voltage disconnecting switch operation.

[0020] 3. The switch structure provided by this invention allows for independent installation of both the contact assembly and the contact finger assembly, facilitating adjustment and replacement, and improving the convenience and efficiency of inspection and maintenance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the knife-end structure of a double-column V-type high-voltage disconnector provided by the present invention; Figure 2 yes Figure 1 A schematic diagram of the contact mechanism and contact finger mechanism of the middle gate knife structure; Figure 3 yes Figure 2 A schematic diagram of the contact mechanism provided by the middle contact mechanism and the contact finger mechanism; Figure 4 yes Figure 2 A schematic diagram of the contact finger mechanism provided by the middle contact mechanism and the contact finger mechanism; Figure 5 yes Figure 2 A schematic diagram of the contact assembly and contact finger assembly provided by the middle contact mechanism and the contact finger mechanism; Figure 6 yes Figure 5 A schematic diagram of the contact assembly provided by the middle contact assembly and the contact finger assembly; Figure 7 yes Figure 5 A schematic diagram of the structure of the contact finger assembly provided by the middle contact assembly and the contact finger assembly; Figure 8 yes Figure 2 A schematic diagram of the contact connection assembly provided by the middle contact mechanism and the contact finger mechanism; Figure 9 yes Figure 2 A schematic diagram of the contact finger connection assembly provided by the middle contact mechanism and the contact finger mechanism; Figure 10 yes Figure 8 A schematic diagram of the contact connecting arm provided by the middle contact connecting assembly; Figure 11 yes Figure 9 A schematic diagram of the structure of the finger connector arm provided by the middle finger connector assembly.

[0022] Explanation of the labels for the main components in the diagram: 1000, Knife switch structure; 100, Base; 200, Contact insulation support; 300, Contact finger insulation support; 10. Contact mechanism; 11. Contact conductive rod; 12. Contact assembly; 121. Contact support seat; 122. Contact pillar; 123. Contact end plate; 124. Contact mounting hole; 13. Contact connection assembly; 131. Contact mounting seat; 132. Contact connecting seat; 133. Contact connecting arm; 1331. First contact extension; 1332. Second contact extension; 1333. Third contact extension; 1334. Contact receiving cavity; 134. Contact conductive shaft; 135. Contact terminal block; 136. Contact conductive strip; 20. Contact finger mechanism; 21. Contact finger guide rod; 22. Contact finger assembly; 221. Contact finger support seat; 222. Contact finger support column; 223. Contact finger plate; 2231. First contact finger plate; 2232. Second contact finger plate; 2233. Clamping space; 224. Connecting spring; 225. Contact finger mounting hole; 226. Contact finger flap; 2261. First contact finger flap; 2262. Second contact finger flap; 23. Contact finger connecting assembly; 231. Contact finger mounting seat; 232. Contact finger connecting seat; 233. Contact finger connecting arm; 2331. First contact finger extension; 2332. Second contact finger extension; 2333. Third contact finger extension; 2334. Contact finger receiving cavity; 234. Contact finger guide shaft; 235. Contact finger terminal block; 236. Contact finger guide strip; 30. Connecting rod. Detailed Implementation

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings; many specific details are set forth in the following description in order to provide a full understanding of the present invention; based on the embodiments of the present invention, those skilled in the art can make similar improvements without departing from the spirit of the present invention, but cannot make all other embodiments obtained without creative effort, therefore the present invention is not limited to the specific embodiments disclosed below.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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 connection of two components; and they can also refer to a "transmission connection," that is, a power connection through various suitable methods such as belt drive, gear drive, or sprocket drive. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] Please see Figures 1 to 11To address the problem, this invention provides a knife switch structure 1000 for a double-column V-shaped horizontal outdoor disconnector. The knife switch structure 1000 includes a base 100, a contact insulating support 200 with a contact mechanism 10, and a contact finger insulating support 300 with a contact finger mechanism 20. The contact insulating support 200 and the contact finger insulating support 300 are arranged in a V-shape on the base 100 and rotate synchronously towards each other. The contact mechanism 10 includes a contact conductive rod 11, a contact assembly 12 movably disposed within the operating end of the contact conductive rod 11, and a contact connecting assembly 13 connecting the top of the contact insulating support 200 to the contact conductive rod 11. The contact connecting assembly 13 connects to the contact... The head insulating support 200 is vertical, and the contact conductive rod 11 is horizontally arranged. The contact finger mechanism 20 includes a contact conductive rod 21, a contact finger assembly 22 movably arranged in the operating end of the contact conductive rod 21, and a contact finger connecting assembly 23 connecting the top of the contact finger insulating support 300 and the contact conductive rod 21. The contact finger connecting assembly 23 is vertical to the contact finger insulating support 300, and the contact conductive rod 21 is horizontally arranged. When the switch is in the closed state, the contact assembly 12 extends into the contact finger assembly 22. When the switch is open, the contact insulating support 200 and the contact finger insulating support 300 rotate synchronously in opposite directions to drive the contact assembly 12 to gradually rotate out of the contact finger assembly 22 until it moves away from the contact finger assembly 22.

[0026] Specifically, the contact insulation support 200 and the contact finger insulation support 300 are arranged in a V-shape on the base 100 and are mechanically linked by the bottom connecting rod 30 to ensure that the two rotate strictly synchronously and in opposite directions during the opening and closing process. When the switch is closed, the contact assembly 12 extends into the contact finger assembly 22 to form electrical contact. When the switch is opened, the contact insulation support 200 and the contact finger insulation support 300 rotate synchronously to drive the contact assembly 12 to rotate out of the contact finger assembly 22.

[0027] By adjusting the length of the contact finger assembly 22 extending out of the operating end of the contact guide rod 21 and the length of the contact assembly 12 extending out of the operating end of the contact conductive rod 11, the rotation radius of the contact mechanism 10 and the contact finger mechanism 20 can be adjusted, thereby ensuring that the switch structure 1000 of the high-voltage disconnector will not collide or jam when closing or opening.

[0028] The switch structure 1000 provided by the present invention adopts a double-column V-shaped arrangement so that the contact insulation support 200 and the contact finger insulation support 300 can rotate synchronously in opposite directions, thereby driving the contact assembly 12 and the contact finger assembly 22 to perform opening and closing actions.

[0029] In one embodiment, the angle between the contact conductive rod 11 and the contact connecting assembly 13 is set at 25°~155°, and the angle between the contact conductive rod 21 and the contact connecting assembly 23 is set at 25°~155°; a connecting rod 30 is connected between the bottom of the contact insulating support 200 and the bottom of the contact insulating support 300, and the connecting rod 30 drives the contact insulating support 200 and the contact insulating support 300 to rotate synchronously in opposite directions.

[0030] Specifically, the included angle between the contact conductive rod 11 and the contact connecting assembly 13 is set to 25°–155°, and the included angle between the contact conductive rod 21 and the contact connecting assembly 23 is also set to 25°–155°. This angle range ensures that the switch moves smoothly and is subjected to reasonable force during the opening and closing process. The bottom of the contact insulating support 200 and the contact insulating support 300 are connected by a connecting rod 30, thereby realizing the synchronous opposite rotation of the contact insulating support 200 and the contact insulating support 300, effectively ensuring the coordination and reliability of the switch opening and closing action.

[0031] In one embodiment, the finger connection assembly 23 and the contact connection assembly 13 are symmetrically arranged. The contact connection assembly 13 includes a contact mounting base 131 fixedly disposed on the top of the contact insulating support 200, a contact connecting base 132 fixedly disposed on the top of the contact mounting base 131, and a contact connecting arm 133 protruding from the contact conductive rod 11 toward the contact connecting base 132. The connecting end of the contact connecting arm 133 is connected to the fixed end of the contact conductive rod 11, and the contact connecting arm 133 is perpendicular to the contact insulating support 200.

[0032] Specifically, the contact connection assembly 13 is designed to make the connection between the contact conductive rod 11 and the contact insulating support 200 more stable and the force transmission more direct; the contact connection arm 133 is perpendicular to the axis of the contact insulating support 200, which enables the contact conductive rod 11 to always maintain horizontal movement during the opening and closing process.

[0033] Furthermore, the contact connection assembly 23 includes a contact mounting base 231 fixedly disposed on the top of the contact insulating support 300, a contact connecting base 232 fixedly disposed on the top of the contact mounting base 231, and a contact connecting arm 233 protruding from the contact conductive rod 11 toward the contact connecting base 232. The connecting end of the contact connecting arm 233 is fixedly connected to the fixed end of the contact conductive rod 21, and the contact connecting arm 233 is perpendicular to the contact insulating support 200.

[0034] Specifically, the design of the contact finger connection assembly 23 makes the connection between the contact finger rod 21 and the contact finger insulating support 300 more stable and the force transmission more direct; the contact finger connection arm 233 is perpendicular to the axis of the contact finger insulating support 300, which enables the contact finger rod 21 to always maintain horizontal movement during the opening and closing process.

[0035] In one embodiment, the contact assembly 12 includes a contact support 121, a contact post 122 extending from the contact support 121 toward one end of the contact finger assembly 22, and a contact end plate 123 fixedly disposed on the free end of the contact post 122.

[0036] The free end of the contact post 122 is the end of the contact post 122 that is close to the contact finger assembly 22.

[0037] Furthermore, the contact conductive rod 11 is provided with a plurality of contact mounting holes 124 at equal intervals along its length direction, which match the contact support 121. The contact support 121 is movably disposed in the corresponding contact mounting holes 124 on the contact conductive rod 11 to adjust the length of the contact end plate 123 extending out of the operating end of the contact conductive rod 11.

[0038] Specifically, the contact support 121 can be fixed in different contact mounting holes 124 by bolts, so that the position of the contact support 121 in the contact conductive rod 11 can be continuously and flexibly adjusted, thereby realizing the adjustment of the length of the operating end of the contact end plate 123 extending out of the contact conductive rod 11 to adapt to different installation errors or wear compensation.

[0039] In one embodiment, the finger assembly 22 includes a finger support 221, a finger support column 222 extending from the finger support 221 toward one end of the contact assembly 12, and rectangular finger plates 223 extending from both sides of the finger support column 222, the finger plates 223 being used to hold the contact end plate 123.

[0040] Furthermore, the contact plate 223 includes a first contact plate 2231 and a second contact plate 2232, and a clamping space 2233 is formed between the first contact plate 2231 and the second contact plate 2232. The clamping space 2233 is used to clamp the contact end plate 123. A connecting spring 224 is attached to the outer side wall of the first contact plate 2231 and the second contact plate 2232. The connecting spring 224 is used to provide the elastic force for the first contact plate 2231 and the second contact plate 2232 to clamp the contact end plate 123.

[0041] Specifically, when the contact end plate 123 extends into the clamping space 2233 formed between the first contact finger plate 2231 and the second contact finger plate 2232, the connecting spring 224 applies pressure to the outer walls of the first contact finger plate 2231 and the second contact finger plate 2232, so that the first contact finger plate 2231 and the second contact finger plate 2232 are clamped inward, thereby allowing the inner walls of the first contact finger plate 2231 and the second contact finger plate 2232 to be stably clamped on both sides of the contact end plate 123.

[0042] Furthermore, the touch guide rod 21 is provided with a plurality of touch finger mounting holes 225 at equal intervals along its length direction, which match the touch finger support seat 221. The touch finger support seat 221 is movably disposed in the corresponding touch finger mounting holes 225 on the touch guide rod 21 to adjust the length of the operating end of the touch finger plate 223 extending out of the touch guide rod 21.

[0043] Specifically, the finger support 221 can be fixed in different finger mounting holes 225 by bolts, so that the position of the finger support 221 in the finger guide rod 21 can be continuously and flexibly adjusted to adjust the length of the operating end of the finger plate 223 extending out of the finger guide rod 21, thereby realizing the flexible adjustment of the opening position of the finger plate 223 to adapt to different installation errors or wear compensation.

[0044] In one embodiment, the contact plate 223 is slightly longer than the connecting spring 224. The connecting spring 224 is used to provide the elastic force for the first contact plate 2231 and the second contact plate 2232 to clamp the contact end plate 123. When the switch is closed, the contact end plate 123 extends into the clamping space 2233 formed between the first contact plate 2231 and the second contact plate 2232. The connecting spring 224 applies pressure to the outer walls of the first contact plate 2231 and the second contact plate 2232 so that the first contact plate 2231 and the second contact plate 2232 are clamped inward, thereby allowing the inner walls of the first contact plate 2231 and the second contact plate 2232 to be stably clamped on both sides of the contact end plate 123.

[0045] Specifically, during the closing process of the switch, the contact end plate 123 extends into the clamping space 2233 formed between the first contact finger plate 2231 and the second contact finger plate 2232. At this time, the connecting spring 224 elastically deforms and presses the first contact finger plate 2231 and the second contact finger plate 2232 inward, so that the inner sidewalls of the first contact finger plate 2231 and the second contact finger plate 2232 can firmly clamp the two sides of the contact end plate 123. This design utilizes the adaptive clamping force of the connecting spring 224 to ensure stable contact resistance, reliable electrical connection, and automatic compensation of clamping force with wear.

[0046] In one embodiment, the first finger plate 2231 and the second finger plate 2232 extend arc-shaped finger flaps 226 from the ends near the contact assembly 12, respectively.

[0047] Furthermore, the contact flip plate 226 includes a first contact flip plate 2261 and a second contact flip plate 2262. The width between the first contact flip plate 2261 and the second contact flip plate 2262 is slightly larger than the width of the contact end plate 123, so as to allow the contact support 122 and the contact end plate 123 on the contact support 122 to extend into it. The width of the clamping space 2233 formed between the first contact plate 2231 and the second contact plate 2232 is the same as the width of the contact end plate 123, so that the contact end plate 123 extending into the clamping space 2233 is connected to the inner sidewalls of the first contact plate 2231 and the second contact plate 2232.

[0048] Specifically, the ends of the first contact plate 2231 and the second contact plate 2232 are respectively provided with an outwardly arc-shaped first contact flap 2261 and a second contact flap 2262. The entrance width between the first contact flap 2261 and the second contact flap 2262 is slightly larger than the width of the contact end plate 123, so as to facilitate the smooth insertion of the contact support 122 and the contact end plate 123. The width of the inner parallel section of the clamping space 2233 formed between the first contact plate 2231 and the second contact plate 2232 is basically consistent with the width of the contact end plate 123, so as to ensure that the inner wall of the clamping space 2233 formed between the contact end plate 123 and the first contact plate 2231 and the second contact plate 2232 forms a surface contact after abutting, thereby reducing arc burn-off and improving current carrying capacity and mechanical stability.

[0049] In one embodiment, the contact connecting arm 133 includes a first contact extension 1331 extending from the upper and lower sides of the end of the contact connecting arm 133 near the contact connecting seat 132, a second contact extension 1332 arranged parallel to the first contact extension 1331, and a third contact extension 1333 extending from the side wall of the end of the contact connecting arm 133 near the contact connecting seat 132. The second contact extension 1332 is fixedly connected to the contact connecting seat 132, and the third contact extension 1333, the first contact extension 1331, and the second contact extension 1332 form a contact receiving cavity 1334.

[0050] Specifically, the contact receiving cavity 1334 provides installation and protection space for other conductive structures at the contact connecting arm 133, thereby making the overall structure of the contact mechanism 10 compact and with high mechanical strength.

[0051] Furthermore, the contact connection assembly 13 also includes a contact conductive shaft 134 passing through the top of the contact receiving cavity 1334, a contact wiring plate 135 clamped on the top of the contact conductive shaft 134, and a contact conductive strip 136 fixedly disposed at the bottom of the contact conductive shaft 134 and fixedly connected to the third contact extension 1333 of the contact receiving cavity 1334.

[0052] Specifically, the current is conducted from the contact terminal plate 135 through the contact conductive shaft 134 and the contact conductive strip 136 to the contact connecting arm 133, and then to the contact conductive rod 11 to form a low-resistance, high-current conductive path. In addition, the contact conductive strip 136 is flexibly arranged to relieve mechanical stress during operation.

[0053] In one embodiment, the finger connecting arm 233 includes a first finger extension 2331 extending from the upper and lower sides of the end of the finger connecting arm 233 near the finger connecting seat 221, a second finger extension 2332 arranged parallel to the first finger extension 2331, and a third finger extension extending from the side wall of the end of the finger connecting arm 233 near the finger connecting seat 221. The second finger extension 2332 is fixedly connected to the finger connecting seat 221, and the third finger extension 2333, the first finger extension 2331, and the second finger extension 2332 form a finger receiving cavity 2334.

[0054] Specifically, the finger receiving cavity 2334 provides installation and protection space for other conductive structures at the finger connecting arm 233, thereby making the overall structure of the finger mechanism 20 compact and with high mechanical strength.

[0055] Furthermore, the finger connection assembly 23 also includes a finger guide shaft 234 passing through the top of the finger receiving cavity 2334, a finger connector plate 235 snapped onto the top of the finger guide shaft 234, and a finger guide strip 236 fixedly disposed at the bottom of the finger guide shaft 234 and fixedly connected to the third finger extension 2333 of the finger receiving cavity 2334.

[0056] Specifically, the current is conducted from the contact finger terminal block 235 through the contact finger guide shaft 234 and the contact finger guide strip 236 to the contact finger connecting arm 233, and then to the contact finger guide rod 21 to form a low-resistance, high-current conductive path. In addition, the contact finger guide strip 236 is flexibly designed to alleviate mechanical stress during operation.

[0057] Compared with the prior art, the present invention has at least the following technical effects: 1. The switch structure 1000 provided by the present invention adopts a double-column V-shaped arrangement so that the contact insulation support 200 and the contact finger insulation support 300 can rotate synchronously in opposite directions through the connecting rod 30, thereby driving the contact assembly 12 and the contact finger assembly 22 to perform opening and closing actions.

[0058] 2. The switch structure 1000 provided by this invention has a compact and reasonable structure, reduces the gaps between conductive components, effectively prevents birds from nesting, and improves the safety and reliability of high-voltage disconnecting switch operation.

[0059] 3. The switch structure 1000 provided by the present invention has contact assembly 12 and contact finger assembly 22 that can be independently and movablely installed, which facilitates adjustment and replacement, and improves the convenience and efficiency of inspection and maintenance.

[0060] Obviously, the above embodiments are merely examples for the detailed description of the present invention and are not intended to limit the implementation. The present invention can be implemented in many other ways different from those described herein. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make other modifications and variations based on the above description, and such modifications and variations still fall within the protection scope defined by the appended claims.

Claims

1. A knife-end structure for a double-column V-type high-voltage disconnector, comprising a base, a contact insulating support with a contact mechanism, and a contact finger insulating support with a contact finger mechanism, wherein the contact insulating support and the contact finger insulating support are arranged in a V-shape on the base and rotate synchronously in opposite directions; characterized in that, The contact mechanism includes a contact conductive rod, a contact assembly movably disposed within the operating end of the contact conductive rod, and a contact connecting assembly connecting the top of the contact insulating support column to the contact conductive rod. The contact connecting assembly is perpendicular to the contact insulating support column, and the contact conductive rod is horizontally arranged. The touch finger mechanism includes a touch finger rod, a touch finger assembly movably disposed in the operating end of the touch finger rod, and a touch finger connecting assembly connecting the top of the touch finger insulating support to the touch finger rod. The touch finger connecting assembly is perpendicular to the touch finger insulating support, and the touch finger rod is horizontally arranged. When the switch is in the closed state, the contact assembly extends into the contact finger assembly; when the switch is open, the contact insulation post and the contact finger insulation post rotate synchronously in opposite directions, so as to drive the contact assembly to gradually rotate out of the contact finger assembly until it moves away from the contact finger assembly.

2. The gate structure according to claim 1, characterized in that, The angle between the contact conductive rod and the contact connecting assembly is set at 25°~155°; The angle between the contact guide rod and the contact finger connection assembly is set at 25°~155°; A connecting rod is connected between the bottom of the contact insulating support and the bottom of the contact finger insulating support, and the connecting rod drives the contact insulating support and the contact finger insulating support to rotate synchronously in opposite directions.

3. The gate structure according to claim 2, characterized in that, The contact connection assembly includes a contact mounting base fixedly disposed on the top of the contact insulating support, a contact connecting base fixedly disposed on the top of the contact mounting base, and a contact connecting arm protruding from the contact conductive rod toward the contact connecting base. The connecting end of the contact connecting arm is connected to the fixed end of the contact conductive rod, and the contact connecting arm is perpendicular to the contact insulating support. The contact finger connection assembly includes a contact finger mounting base fixedly disposed on the top of the contact finger insulating post, a contact finger connecting base fixedly disposed on the top of the contact finger mounting base, and a contact finger connecting arm protruding from the contact conductive rod toward the contact finger connecting base. The connecting end of the finger connecting arm is fixedly connected to the fixed end of the finger guiding rod, and the finger connecting arm is perpendicular to the finger insulating support.

4. The gate structure according to claim 3, characterized in that, The contact assembly includes a contact support base, a contact support column extending from the contact support base toward one end of the contact finger assembly, and a contact end plate fixedly disposed on the free end of the contact support column; The contact conductive rod has several contact mounting holes at equal intervals along its length that match the contact support seat. The contact support seat is movably disposed in the corresponding contact mounting holes on the contact conductive rod to adjust the length of the operating end of the contact end plate extending out of the contact conductive rod. The finger assembly includes a finger support base, a finger support column extending from the finger support base toward one end of the finger assembly, and rectangular finger plates extending from both sides of the finger support column. The finger plates include a first finger plate and a second finger plate, and connecting springs are attached to the outer walls of the first finger plate and the second finger plate. The touch-guide rod has a plurality of touch-finger mounting holes at equal intervals along its length that match the touch-finger support seat. The touch-finger support seat is movably disposed in the corresponding touch-finger mounting holes on the touch-guide rod to adjust the length of the touch-finger plate extending out of the operating end of the touch-guide rod. A clamping space is formed between the first contact plate and the second contact plate, and the clamping space is used to clamp the contact end plate.

5. The gate structure according to claim 4, characterized in that, The contact plate is slightly longer than the connecting spring, and the connecting spring is used to provide the first contact plate and the second contact plate with elastic force to clamp the contact end plate; When the switch is closed, the contact end plate extends into the clamping space formed between the first contact plate and the second contact plate, and the connecting spring applies pressure to the outer walls of the first contact plate and the second contact plate so that the first contact plate and the second contact plate clamp inward.

6. The gate structure according to claim 5, characterized in that, The first and second contact plates extend arc-shaped contact flaps from their ends near the contact assembly; The contact finger flap includes a first contact finger flap and a second contact finger flap, the width between the first contact finger flap and the second contact finger flap is slightly larger than the width of the contact end plate, so as to allow the contact support and the contact end plate on the contact support to extend into it; The width of the clamping space formed between the first and second contact plates is the same as the width of the contact end plate, so that the contact end plate extending into the clamping space abuts against the inner sidewalls of the first and second contact plates.

7. The gate structure according to claim 3, characterized in that, The contact connecting arm includes a first contact extension and a second contact extension parallel to the first contact extension extending from the upper and lower sides of the end of the contact connecting arm near the contact connecting seat, and the second contact extension is fixedly connected to the contact connecting seat. The contact connecting arm further includes a third contact extension extending from the side wall of the contact connecting arm near the contact connecting seat, the third contact extension, the first contact extension, and the second contact extension forming a contact receiving cavity.

8. The gate structure according to claim 3, characterized in that, The finger connecting arm includes a first finger extension and a second finger extension parallel to the first finger extension, extending from the upper and lower sides of the end of the finger connecting arm near the finger connecting seat. The second finger extension is fixedly connected to the finger connecting seat. The finger connecting arm also includes a third finger extension extending from the side wall of the finger connecting arm near the finger connecting seat, the third finger extension, the first finger extension, and the second finger extension to form a finger receiving cavity.

9. The gate structure according to claim 7, characterized in that, The contact connection assembly further includes a contact conductive shaft passing through the top of the contact receiving cavity, a contact terminal plate clamped on the top of the contact conductive shaft, and a contact conductive strip fixedly disposed at the bottom of the contact conductive shaft and fixedly connected to the third contact extension of the contact receiving cavity.

10. The gate structure according to claim 8, characterized in that, The finger connection assembly further includes a finger guide shaft passing through the top of the finger receiving cavity, a finger connector plate snapped onto the top of the finger guide shaft, and a finger guide strip fixedly disposed at the bottom of the finger guide shaft and fixedly connected to the third finger extension of the finger receiving cavity.

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