High-reliability V-shaped isolating switch

Abstract

The invention relates to a high-reliability V-shaped disconnecting switch which comprises a base. The three monopole assemblies are distributed on the base in parallel, each monopole assembly comprises a pair of post insulators which are distributed in a V shape, the two post insulators are respectively provided with a conductive arm, and the two conductive arms are respectively provided with a contact and a contact finger; the contact finger is installed on the conductive arm through cooperation of a contact finger base, the contact finger comprises a pair of elastic reeds located on the inner side and a pair of contact finger bodies located on the outer side, the elastic reeds and the contact finger bodies are fixed to the contact finger base through cooperation of bolts, and one side of each elastic reed is further provided with an arc-shaped extending section extending out of the corresponding contact finger body. And the arc-shaped extension sections of the two elastic reeds are matched together to form a trumpet-shaped opening into which the contact is embedded. According to the isolating switch, the self-operated contact fingers are matched with the contacts, stable and self-adaptive contact pressure is provided, the contact resistance and the operation temperature rise are reduced fundamentally, the conductive reliability is greatly improved, and the service life is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of disconnectors, in particular to a high-reliability V-shaped disconnector. BACKGROUND

[0002] GW5 high-voltage disconnector (alias: high-voltage isolation switch), its rated voltage level covers 40.5KV, 72.5KV and 126KV applied to alternating current 50Hz, suitable for outdoor environment with altitude not more than 3000 meters, temperature-25℃ to +40℃, part of the model through 5500 meters altitude and-50℃~+85℃ environment verification. The device is mainly used for high-voltage line no-load opening and closing operation and electrical isolation, which can handle small capacitance or inductance current. The product adopts double-column V-shaped structure, equipped with double-break design and self-cleaning contact system, the contact fingers are made of high elasticity material to avoid spring corrosion, the rotating seat adopts sealed structure combined with hot galvanizing treatment, and a 90° insulation break is formed after the switch is opened, and the mechanical interlocking device ensures safe isolation.

[0003] GW5 series disconnectors are widely used in 126kV and below power grids, but the existing products have obvious defects: first, the conductive system: the traditional contact finger elasticity is easy to attenuate, which leads to the decrease of contact pressure and the increase of resistance, causing overheating risk; second, the transmission mechanism: the bearing has poor sealing property and is easy to rust and jam, which causes large operating torque, unreliable action and short mechanical life; third, the structure design: the base and the pillar have insufficient rigidity, which is easy to deform under strong wind or earthquake, affecting the reliable contact of the contact; fourth, the locking device: the main grounding lock mechanism has weak strength, has the risk of misoperation, and has poor anti-electric dynamic impact capacity; fifth, corrosion prevention and maintenance: the conventional galvanizing and lubrication protection are insufficient, which is difficult to adapt to harsh environment, and the on-site debugging relies on experience, which is low in precision and efficiency. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a high-reliability V-shaped disconnector with better performance.

[0005] To solve the above technical problems, the technical scheme of the present application is as follows: a high-reliability V-shaped disconnector, the innovation point of which is that it comprises a base; three single-pole assemblies arranged side by side on the base, the single-pole assembly comprising a pair of V-shaped pillar insulators, a conductive arm is installed on each of the two pillar insulators, a contact and a contact finger are installed on each of the two conductive arms, the opening and closing of the contact and the contact finger are realized by the rotation of the two pillar insulators, thereby realizing the opening and closing of the switch, and an arc striking assembly is arranged between the contact and the contact finger; The contact finger is installed on the conductive arm through the cooperation of a contact finger seat, the contact finger comprises a pair of elastic spring sheets located on the inner side and a pair of contact finger bodies located on the outer side, the elastic spring sheets and the contact finger bodies are fixed on the contact finger seat through the cooperation of bolts, and one side of the elastic spring sheet further has an arc extension section extending out of the contact finger body, and the arc extension sections of the two elastic spring sheets jointly form a horn-shaped opening for accommodating the contact head; A ground knife assembly is further arranged on the side of each single-pole assembly, and the three single-pole assemblies are driven to rotate synchronously by a transmission unit.

[0006] Further, the arc striking assembly comprises a first arc striking rod arranged on the contact head and a second arc striking rod arranged on the contact finger, wherein the first arc striking rod is vertically fixed on the end face of the contact head and extends below the contact head, the second arc striking rod is arranged on the contact finger seat and below the contact finger, and a torsion spring is further arranged between the second arc striking rod and the contact finger seat.

[0007] Further, the section where the first arc striking rod and the second arc striking rod contact each other is made of copper-tungsten material.

[0008] Further, the bottom end of the support insulator is installed on the base through the cooperation of a rotating seat; The rotating seat comprises a rotating seat body fixed on the base, and rotating assemblies that cooperate with the two support insulators of the same single-pole assembly are arranged on the rotating seat body, and the two rotating assemblies are also distributed in a V shape on the rotating seat body. The transmission unit comprises an inter-phase pull rod, a main knife pull rod and an operation box, the inter-phase pull rod is used to connect adjacent two rotating assemblies, one side of the main knife pull rod is connected with the operation box and is driven to move horizontally by the operation box, the other side of the main knife pull rod is connected with one of the rotating assemblies and drives the rotating assembly to rotate, thereby driving all the rotating assemblies to rotate synchronously through the cooperation of the inter-phase pull rod; The ground knife assembly comprises a ground knife rod, a ground knife contact head and a ground knife contact finger, wherein the ground knife contact finger is arranged below one of the conductive arms, the ground knife contact head is arranged on the ground knife rod and is driven to swing up and down by the ground knife rod, so as to cooperate with the ground knife contact head to realize opening and closing; The ground knife rods in the three ground knife assemblies are driven to swing up and down synchronously by the same driving mechanism, the driving mechanism comprises a driving box, a transmission pipe and a horizontal pipe, the horizontal pipe is installed on the base through the cooperation of bearings and bearing seats on both sides of the horizontal pipe, the three ground knife rods are connected with the horizontal pipe and swing up and down with the rotation of the horizontal pipe, one side of the transmission pipe is connected with the driving box and is driven to rotate by the driving box, the other side of the transmission pipe is connected with the horizontal pipe through the cooperation of a driving crank, a pull rod and a driven crank, and drives the horizontal pipe to rotate.

[0009] Further, the rotating assembly comprises a rotating plate and a rotating shaft, the rotating plate is fixed to the post insulator through screw cooperation, a rotating cavity for installing the rotating shaft is formed in the rotating seat body, the rotating shaft is arranged in the rotating cavity, and a silicon-based lubricating grease is arranged between the rotating shaft and the rotating cavity; the upper side of the rotating shaft extends out of the rotating cavity and is connected with the rotating plate and rotates synchronously with the rotating plate; The rotating plate of each rotating assembly is hinged to the interphase pull rod, and the rotating plate of one of the rotating assemblies is further hinged to the main knife pull rod; The side of the rotating shaft connected with the rotating plate is defined as the first side, and the side of the rotating shaft away from the rotating plate is defined as the second side; The first side of the rotating shaft is further provided with a sealing cover and a first roller bearing, the first roller bearing is sleeved on the outer wall of the rotating shaft, the outer wall of the first roller bearing is attached to the inner wall of the rotating cavity, the sealing cover is also sleeved on the rotating shaft and is located between the first roller bearing and the rotating plate, the sealing cover covers the rotating shaft and the first roller bearing, and the outer side of the sealing cover is fixed to the rotating seat body through screw cooperation; The second side of the rotating shaft is further provided with a cover and a second roller bearing, the second roller bearing is sleeved on the outer wall of the rotating shaft, the outer wall of the second roller bearing is attached to the inner wall of the rotating cavity, a disc spring is further arranged at the end of the second side of the rotating shaft, the side of the disc spring abuts against the end of the second roller bearing, the disc spring is fixed to the rotating shaft through screw cooperation, and the cover is fixed to the rotating seat body through screw cooperation and covers the disc spring, the second roller bearing and the rotating shaft.

[0010] Further, a locking assembly is further arranged between the horizontal pipe and the rotating assembly, the locking assembly comprises a first sector plate arranged on the rotating assembly and a second sector plate arranged on the horizontal pipe, the first sector plate is fixed to the rotating assembly through screw cooperation, the second sector plate is fixed to the horizontal pipe through cooperation of a pair of hoops, the locking between the rotating assembly and the horizontal pipe is realized through cooperation of the first sector plate and the second sector plate, and in the locked state, the end of the first sector plate abuts against the side of the second sector plate.

[0011] Further, a wiring terminal is further arranged between the conductive arm and the post insulator, and the wiring terminal is connected with the conductive arm through a flexible connection.

[0012] The advantages of the present application are that: the isolating switch in the present application cooperates with the contact through the self-force type contact finger formed by the cooperation of the elastic spring sheet and the contact finger body, and provides stable and self-adaptive contact pressure, fundamentally reduces the contact resistance and operating temperature rise, and greatly improves the conductivity reliability and service life.

[0013] The transmission unit has been optimized, effectively solving the problems of corrosion and jamming, resulting in smaller operating torque, more precise movements, and a mechanical lifespan that easily meets the requirements of more than 10,000 operations.

[0014] The locking mechanism designed between the horizontal tube and the rotating assembly is achieved by the cooperation of the first sector plate and the second sector plate. It has high mechanical strength and fundamentally eliminates the risk of misoperation of the main cutting tool, thus comprehensively improving safety.

[0015] The enhanced base and reasonable center of gravity design significantly improve the overall rigidity and shock and wind resistance of the product, ensuring reliable contact even under dynamic loads.

[0016] Key components utilize maintenance-free bearings and bushing lubrication technology, which can withstand harsh environmental corrosion, greatly extending the maintenance cycle and reducing the total life cycle cost. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the high-reliability V-shaped disconnector of the present invention.

[0018] Figure 2 This is a schematic diagram of the unipolar component in this invention.

[0019] Figure 3 This is a schematic diagram of the arc-starting component in this invention.

[0020] Figure 4 This is a schematic diagram of the wiring terminals in this invention.

[0021] Figure 5 This is a schematic diagram of the rotating component in this invention.

[0022] Figure 6 This is a schematic diagram of the transmission unit in this invention.

[0023] Figure 7 This is a schematic diagram of the locking component in this invention. Detailed Implementation

[0024] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0025] like Figures 1-7 A high-reliability V-shaped disconnect switch is shown, including A base 1, which is rectangular in shape, has a pair of parallel support columns 11 installed at the bottom end of the base 1.

[0026] Three monopole components are arranged side by side on the base 1, such as Figure 2As shown in the schematic diagram, the single-pole assembly comprises a pair of V-shaped support insulators 2, each of which is provided with a conducting arm 21, and each of the conducting arms 21 is provided with a contact 22 and a contact finger. The opening and closing of the contact 22 and the contact finger are realized by the rotation of the two support insulators 2, thereby realizing the opening and closing of the switch.

[0027] The contact finger is installed on the conducting arm 21 through a contact finger seat 25, which is fixed on the conducting arm 21 through the cooperation of a bolt and a nut. The contact finger comprises a pair of elastic spring sheets 24 located on the inner side and a pair of contact finger bodies 25 located on the outer side. The elastic spring sheets 24 and the contact finger bodies 25 are fixed on the contact finger seat 25 through the cooperation of a bolt. The elastic spring sheets 24 are further provided with an arc-shaped extension section extending out of the contact finger body 25 on one side. The arc-shaped extension sections of the two elastic spring sheets 24 cooperatively form a horn-shaped opening in which the contact 22 is embedded. When the contact 22 is inserted into the contact finger, the elastic spring sheets 24 are elastically deformed to generate a constant pressure that is self-adapted to the depth of insertion, thereby ensuring the stability of the contact resistance and low abrasion.

[0028] An arc leading assembly is further arranged between the contact 22 and the contact finger. Figure 3 As shown in the schematic diagram, the arc leading assembly comprises a first arc leading rod 26 arranged on the contact 22 and a second arc leading rod 27 arranged on the contact finger. The first arc leading rod 26 is vertically fixed on the end face of the contact 22 and extends below the contact 22. The first arc leading rod 26 is fixed on the contact 22 through the cooperation of a bolt. The second arc leading rod 27 is arranged on the contact finger seat 25 and is located below the contact finger. A torsion spring 28 is further arranged between the second arc leading rod 27 and the contact finger seat 25. The torsion spring 28 is designed to provide a certain contact pressure for the second arc leading rod 27. When the switch is closed, the first arc leading rod 26 and the second arc leading rod 27 are in contact before the contact 22 and the contact finger are in contact. When the switch is opened, the first arc leading rod 26 and the second arc leading rod 27 are separated after the main contact is separated. When the disconnecting switch is used as a bus transfer switch, the main contact is effectively prevented from being ablated.

[0029] The sections of the first arc leading rod 26 and the second arc leading rod 27 that are in contact with each other are made of copper-tungsten material.

[0030] A wiring terminal 29 is further arranged between the conducting arm 21 and the support insulator 2, and the wiring terminal 29 is connected to the conducting arm 21 through a flexible connection. Figure 4 As shown, the flexible connection ensures that the wiring terminal 29 is in communication with the conducting arm 21, thereby ensuring smooth opening and closing of the switch and equivalent current-carrying capacity.

[0031] A ground knife assembly is further arranged on the side of each single-pole assembly. The three single-pole assemblies are synchronously rotated by a driving unit.

[0032] As Figure 6 can be seen from the schematic diagram, the transmission unit comprises the inter-phase pull rod 41, the main knife pull rod 43, the vertical connecting rod and the operation box 4, the adjacent two rotating assemblies are connected through the cooperation of the inter-phase pull rod 41, one side of the main knife pull rod 43 is connected with the operation box 4 through the cooperation of the vertical connecting rod 42 and is driven by the operation box 4 to move horizontally, the vertical connecting rod 42 is driven by the operation box 4 to rotate, the vertical connecting rod 42 and the main knife pull rod 43 are hinged through the cooperation of the toggle arm, so that when the vertical connecting rod 42 rotates, the main knife pull rod 43 is driven to move horizontally through the cooperation of the toggle arm, the other side of the main knife pull rod 43 is connected with one of the rotating assemblies and drives the rotating assembly to rotate, and then all the rotating assemblies are driven to rotate synchronously through the cooperation of the inter-phase pull rod 41.

[0033] The bottom end of the post insulator 2 is installed on the base 1 through the cooperation of the rotating seat, the rotating seat comprises a rotating seat body 3, the rotating seat body 3 is fixed on the base 1, the rotating seat body 3 is provided with rotating assemblies matched with the two post insulators of the same monopole assembly, and the two rotating assemblies are also V-shapedly distributed on the rotating seat body.

[0034] As Figure 5 can be seen from the schematic diagram, the rotating assembly comprises a rotating plate 31 and a rotating shaft 32, wherein the rotating plate 31 is fixed with the bottom end of the post insulator 2 through the cooperation of the bolt and the nut, a rotating cavity for installing the rotating shaft 32 is opened on the rotating seat body 3, the rotating shaft 32 is obliquely arranged in the rotating cavity, and a silicon-based lubricating grease is arranged between the rotating shaft 32 and the rotating cavity, the upper side of the rotating shaft 32 extends out of the rotating cavity and is connected with the rotating plate 31, and the rotating shaft 32 rotates synchronously with the rotating plate 31.

[0035] The rotating plate 31 of each rotating assembly is hinged with the inter-phase pull rod 41, and the rotating plate 31 of one of the rotating assemblies is also hinged with the main knife pull rod 43, so that the rotating plate 31 is driven to rotate by the main knife pull rod 43, and then the other two rotating plates 31 are driven to rotate through the cooperation of the inter-phase pull rod 41, and then the post insulator 2 is driven to rotate, between the two rotating plates 31 of the two rotating assemblies corresponding to the two post insulators 2 of the same monopole assembly, the two rotating plates 31 are driven to rotate reversely synchronously through the cooperation of the hinged connecting rod, so as to realize the opening and closing actions of the contact 22 and the contact finger.

[0036] The side where the rotating shaft 32 is connected with the rotating plate 31 is defined as the first side, and the side where the rotating shaft 32 is away from the rotating plate 31 is defined as the second side.

[0037] A sealing cover 33 and a first roller bearing 34 are arranged at the first side of the rotating shaft 32, the first roller bearing 33 is sleeved on the outer wall of the rotating shaft 32, and the outer wall of the first roller bearing 33 is attached to the inner wall of the rotating cavity, the sealing cover 33 is also sleeved on the rotating shaft 32, and the sealing cover 33 is located between the first roller bearing 34 and the rotating plate 31 and covers the rotating shaft 32 and the first roller bearing 34, and the outer side of the sealing cover 33 is fixed to the rotating seat body 3 through the cooperation of bolts, so that the first side of the rotating shaft 32 is sealed.

[0038] A sealing cover 33 and a first roller bearing 34 are arranged at the first side of the rotating shaft 32, the first roller bearing 33 is sleeved on the outer wall of the rotating shaft 32, and the outer wall of the first roller bearing 33 is attached to the inner wall of the rotating cavity, the sealing cover 33 is also sleeved on the rotating shaft 32, and the sealing cover 33 is located between the first roller bearing 34 and the rotating plate 31 and covers the rotating shaft 32 and the first roller bearing 34, and the outer side of the sealing cover 33 is fixed to the rotating seat body 3 through the cooperation of bolts, so that the first side of the rotating shaft 32 is sealed.

[0039] Through the sealing protection of the first side and the second side, the problem of rust jamming is effectively solved, the operation torque is smaller, the action is more accurate, and the mechanical life easily meets the operation requirement of more than 10,000 times.

[0040] Moreover, for the design of the rotating assembly on the base, the two rotating shafts 32 are installed on the same rotating seat body 3, the structural strength of the rotating seat body 3 is increased, the overall rigidity and anti-vibration and anti-wind performance of the product are significantly improved, and it is ensured that the contact of the contactor 22 is still reliable under dynamic load.

[0041] The ground knife assembly includes a ground knife rod 5, a ground knife contact 53 and a ground knife contact finger 54, the ground knife contact finger 54 is installed below one of the conductive arms 21, the ground knife contact 53 is installed on the ground knife rod 5 and is driven by the ground knife rod 5 to swing up and down, so as to cooperate with the ground knife contact 53 to realize opening and closing.

[0042] The ground knife rods 5 in the three ground knife assemblies are driven by the same driving mechanism to swing up and down synchronously, the driving mechanism includes a driving box 6, a transmission pipe 51 and a horizontal pipe 52, the horizontal pipe 52 is installed on the base 1 through the cooperation of bearings and bearing seats on both sides of the horizontal pipe 52, the three ground knife rods 5 are connected with the horizontal pipe 52 and realize synchronous up-down swinging with the rotation of the horizontal pipe 52, the transmission pipe 51 is vertically arranged, one side of the transmission pipe 51 is connected with the driving box 6 and is driven by the driving box 6 to rotate, the other side of the transmission pipe 51 is connected with the horizontal pipe 52 through the cooperation of a driving crank, a pull rod and a driven crank and drives the horizontal pipe 52 to rotate.

[0043] In the transmission of the application, the main knife mechanism transmits power to the rotating plate 32 of phase A of the disconnecting switch through the vertical connecting rod 42, the crank, and the main knife pull rod 43, and then transmits power to the rotating plates 32 of phases B and C through the inter-phase connecting rod 41, while the ground knife assembly transmits power to the horizontal pipe 52 of the ground knife through the transmission pipe 51, the driving crank, the pull rod, and the driven crank, and the horizontal pipe 52 drives the three-phase ground knife rod 5 to open and close, thereby constructing a low-friction and high-torsion transmission chain.

[0044] A locking assembly is further arranged between the horizontal pipe 52 and the rotating assembly, as shown in the schematic view. Figure 7 As shown in the schematic view, the locking assembly includes a first sector plate 6 arranged on the rotating plate 32 of the rotating assembly and a second sector plate 61 arranged on the horizontal pipe 52, wherein the first sector plate 6 is fixed to the rotating plate 32 through the cooperation of bolts, and the first sector plate 6 is arranged on the bottom end surface of the rotating plate 32, the second sector plate 61 is fixed to the horizontal pipe 52 through the cooperation of a pair of hoops 62, and the locking between the rotating assembly and the horizontal pipe 52 is realized through the cooperation of the first sector plate 6 and the second sector plate 61, in the locked state, the end of the first sector plate 6 abuts against the side surface of the second sector plate 61, when the main knife is in the closed position, the first sector plate 6 blocks the closing route of the second sector plate 61, only when the main knife is completely opened, the gap of the first sector plate 6 reaches the second sector plate 61, forming a forced mechanical interlocking. For the locking assembly designed between the horizontal pipe 52 and the rotating assembly, the cooperation of the first sector plate 6 and the second sector plate 61 is used to realize it, the mechanical strength is high, and the risk of misoperation of the main ground knife is fundamentally eliminated, and the safety guarantee is comprehensively improved.

[0045] The high-reliability V-shaped disconnecting switch in the application can be made of 6-system high-strength aluminum alloy for the base 1, the rotating shaft body 3, the support insulator 2 and the like, and high-strength bolts can be used for fastening the bolts used for connecting the components, which greatly improves the overall rigidity and stability of the product.

[0046] The above is only a preferred embodiment of the application, and does not limit the application in any form. Although the application has been disclosed as above with the preferred embodiment, it is not intended to limit the application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the application. Any modification, equivalent change and modification of the above embodiments based on the technical essence of the application are still within the scope of the technical solution of the application.

Claims

1. A high-reliability V-shaped disconnector, characterized in that: The utility model relates to a single-pole assembly, a ground knife assembly and a transmission unit. The single-pole assembly comprises a pair of V-shaped support insulators, a conductive arm is installed on each of the support insulators, a contact and a contact finger are installed on each of the conductive arms, the contact and the contact finger are opened and closed by rotating the support insulators, thereby realizing the opening and closing of the switch, and an arc striking assembly is arranged between the contact and the contact finger. The contact finger is installed on the conductive arm through a contact finger seat, the contact finger comprises a pair of elastic spring sheets on the inner side and a pair of contact finger bodies on the outer side, the elastic spring sheets and the contact finger bodies are fixed on the contact finger seat through the cooperation of bolts, one side of the elastic spring sheet further has an arc extension section extending out of the contact finger body, and the arc extension sections of the two elastic spring sheets jointly form a horn-shaped opening in which the contact is embedded. A ground knife assembly is arranged on the side of each single-pole assembly, and the three single-pole assemblies are synchronously rotated by a transmission unit. The arc striking assembly comprises a first arc striking rod arranged on the contact and a second arc striking rod arranged on the contact finger, the first arc striking rod is vertically fixed on the end face of the contact and extends below the contact, the second arc striking rod is arranged on the contact finger seat and below the contact finger, and a torsion spring is arranged between the second arc striking rod and the contact finger seat.

2. The high-reliability V-shaped disconnector according to claim 1, characterized in that: The sections of the first arc striking rod and the second arc striking rod that are in contact with each other are made of copper-tungsten material.

3. The high-reliability V-shaped disconnector according to claim 2, characterized in that: The bottom end of the support insulator is installed on the base through the cooperation of a rotating seat; 4. The high-reliability V-shaped disconnector according to claim 1, characterized in that: The rotating seat comprises a rotating seat body fixed on the base, rotating assemblies that cooperate with the two support insulators of the same single-pole assembly are arranged on the rotating seat body, and the two rotating assemblies are V-shapedly arranged on the rotating seat body; The transmission unit comprises a phase-to-phase pull rod, a main knife pull rod and an operation box, the two adjacent rotating assemblies are connected through the cooperation of the phase-to-phase pull rod, one side of the main knife pull rod is connected with the operation box and is horizontally moved by the operation box, the other side of the main knife pull rod is connected with one of the rotating assemblies and rotates the rotating assembly, thereby synchronously rotating all the rotating assemblies through the cooperation of the phase-to-phase pull rod; The ground knife assembly comprises a ground knife rod, a ground knife contact and a ground knife contact finger, the ground knife contact finger is arranged below one of the conductive arms, the ground knife contact is arranged on the ground knife rod and is swung up and down by the ground knife rod, thereby cooperating with the ground knife contact finger to realize the opening and closing of the switch; The ground knife rods in the three ground knife assemblies are synchronously swung up and down by the same driving mechanism, the driving mechanism comprises a driving box, a transmission pipe and a horizontal pipe, the horizontal pipe is installed on the base through the cooperation of bearings and bearing seats on both sides of the horizontal pipe, the three ground knife rods are connected with the horizontal pipe and are swung up and down with the rotation of the horizontal pipe, one side of the transmission pipe is connected with the driving box and is rotated by the driving box, the other side of the transmission pipe is connected with the horizontal pipe through the cooperation of a driving crank, a pull rod and a driven crank and rotates the horizontal pipe. ​ 5. The high-reliability V-shaped disconnector according to claim 4, characterized in that: The rotating assembly comprises a rotating plate and a rotating shaft, wherein the rotating plate is fixed with the post insulator through the cooperation of bolts, a rotating cavity for installing the rotating shaft is opened on the rotating seat body, the rotating shaft is arranged in the rotating cavity, and a silicon-based lubricating grease is arranged between the rotating shaft and the rotating cavity; the upper side of the rotating shaft extends out of the rotating cavity and is connected with the rotating plate and rotates synchronously with the rotating plate; The rotating plate of each rotating assembly is hinged with the interphase tie rod, and the rotating plate of one of the rotating assemblies is further hinged with the main knife tie rod; The side of the rotating shaft connected with the rotating plate is defined as the first side, and the side of the rotating shaft away from the rotating plate is defined as the second side; The first side of the rotating shaft is further provided with a sealing cover and a first roller bearing, wherein the first roller bearing is sleeved on the outer wall of the rotating shaft, the outer wall of the first roller bearing is in close contact with the inner wall of the rotating cavity, the sealing cover is also sleeved on the rotating shaft and located between the first roller bearing and the rotating plate, the sealing cover covers the rotating shaft and the first roller bearing, and the outer side of the sealing cover is fixed with the rotating seat body through the cooperation of bolts; The second side of the rotating shaft is further provided with a cover and a second roller bearing, wherein the second roller bearing is sleeved on the outer wall of the rotating shaft, the outer wall of the second roller bearing is in close contact with the inner wall of the rotating cavity, a disc spring is further arranged at the end of the second side of the rotating shaft, the side of the disc spring abuts against the end of the second roller bearing, the disc spring is fixed on the rotating shaft through the cooperation of screws, the cover is fixed with the rotating seat body through the cooperation of bolts, and the cover covers the disc spring, the second roller bearing and the rotating shaft.

6. The high-reliability V-shaped disconnector according to claim 4, characterized in that: A locking assembly is further arranged between the horizontal pipe and the rotating assembly, the locking assembly comprises a first sector plate installed on the rotating assembly and a second sector plate installed on the horizontal pipe, wherein the first sector plate is fixed with the rotating assembly through the cooperation of bolts, the second sector plate is fixed with the horizontal pipe through the cooperation of a pair of hoops, the locking between the rotating assembly and the horizontal pipe is realized through the cooperation of the first sector plate and the second sector plate, and in the locked state, the end of the first sector plate abuts against the side of the second sector plate.

7. The high-reliability V-switch according to claim 1, characterized in that: A wiring terminal is further arranged between the conductive arm and the post insulator, and the wiring terminal is connected with the conductive arm through a soft connection.

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