High reliability outdoor high voltage disconnector

Abstract

The application relates to the field of disconnectors, in particular to a high-reliability outdoor high-voltage disconnector, which comprises a first contact seat and a second contact seat respectively installed on two insulators, the first contact seat and the second contact seat are connected through a contact blade, one end of the contact blade is hinged with the first contact seat, the other end of the contact blade can be connected with or disconnected from the second contact seat, one end of the second contact seat is provided with a lock plate, and a lock device is arranged at the position close to the lock plate of the contact blade; the lock device comprises a lock tongue, the bottom of the lock tongue is provided with a buckling part, the buckling part is buckled with the lock plate, the lock tongue is hinged with the two ends of the contact blade through a torsional spring, the top of the lock plate is provided with a telescopic plate made of a magnet, the telescopic plate can be extended towards the first contact seat, the part of the lock tongue in contact with the telescopic plate is made of a magnetic material, and when the telescopic plate is extended, the telescopic plate can be attracted to the contact part of the lock tongue to prevent the lock tongue from shaking.

Description

Technical Field

[0001] This invention relates to the field of disconnecting switch technology, and in particular to a high-reliability outdoor high-voltage disconnecting switch. Background Technology

[0002] Outdoor high-voltage disconnect switches are switchgear without arc-extinguishing devices installed in open-air locations and used in high-voltage power transmission and distribution systems. Their core function is to open and close circuits when there is voltage but no load, thus creating a clearly visible disconnection point when the switch is opened. This reliably isolates the electrical equipment to be maintained from the live lines to ensure personnel safety. They also work with circuit breakers to perform switching operations to change the system's operating mode. However, they are strictly prohibited from being operated under load or with short-circuit current, otherwise a strong electric arc will be generated, causing serious accidents. At the same time, their structure (such as reinforced insulation post insulators, sealed mechanism boxes, etc.) is specially designed to adapt to harsh outdoor environments such as wind, rain, snow, and pollution.

[0003] Existing high-voltage disconnect switches use a single locking structure to connect the contact blade to the contact seat. For example, a high-voltage disconnect switch disclosed in prior art announcement CN224457990U uses a modular design to facilitate pre-assembly and testing of various components during installation, improving installation efficiency. During maintenance, faulty components can be quickly located and replaced, reducing maintenance costs and time. Furthermore, the front contact is mounted on the limit plate of the second porcelain insulator assembly, and the rear contact is mounted on the first porcelain insulator assembly. The contact blade is positioned between the front and rear contacts, making the entire switch structure compact. In addition, a pull ring mounted on the first rotating shaft provides a convenient operating point for the operator. Pulling the pull ring causes the contact blade to rotate around the shaft, realizing the opening and closing operation of the switch. The locking hook and latch groove form a reliable locking mechanism. During opening or closing, the latch of the locking hook can accurately engage with the latch groove on the limit plate. The torsion spring design allows it to function more stably and apply elastic force more evenly during switch operation, ensuring the smoothness and accuracy of the locking hook's movement.

[0004] In windy weather, as the disconnector switch shakes, the contact blade and contact seat will have slight displacement, which will reduce the locking reliability of the latching structure and cause shaking. As a result, the mutual displacement will cause structural wear. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] This invention provides a high-reliability outdoor high-voltage disconnect switch, which solves the problem of low reliability of the locking mechanism in existing technologies. The specific solution is as follows: This invention provides a high-reliability outdoor high-voltage disconnect switch, including a first contact seat and a second contact seat respectively installed on two insulators. The first contact seat and the second contact seat are connected by a contact blade. One end of the contact blade is hinged to the first contact seat, and the other end can be connected or disconnected from the second contact seat. One end of the second contact seat has a locking plate, and the contact blade has a locking device near the locking plate. The locking device includes a latch, the bottom of which has a latching part that latches with a locking plate. The latch is hinged to both ends of the contact blade by a torsion spring. Above the locking plate is a telescopic plate made of magnets. The telescopic plate can extend toward the first contact seat. The part of the latch that contacts the telescopic plate is made of magnetic material. When the telescopic plate extends, it can attract the contact part of the latch to prevent the latch from shaking.

[0007] Preferably, the contact blade consists of two blades distributed front and rear, with a connecting post between the two blades. The connecting post has first bolts at both ends, and the two first bolts fix the two blades and the front and rear ends of the connecting post respectively, so that the distance between the two blades remains fixed.

[0008] Preferably, a first contact block and a second contact block are respectively provided at one end of the first contact seat and the second contact seat near the contact blade. The contact surface of the contact blade is in close contact with the first contact block and the second contact block, respectively. The first contact block and the second contact block are respectively fixed to the top of the insulator by a second bolt.

[0009] Preferably, the first contact block has hinge holes at both ends, and the two ends of the contact blade are equipped with clamping devices. The clamping device includes a threaded post, which is fixed through the contact blade. The head of one end of the threaded post is fixed to the contact blade, and the other end of the threaded post is fitted with two clamping rings. The two clamping rings are fixed together by a first spring. The end of the clamping ring away from the contact blade is threaded with a nut. By rotating the nut, the clamping ring moves closer to and away from the contact blade, thereby applying different pressures to the contact blade and adjusting the clamping force of the contact blade.

[0010] Preferably, a gear is fixed to the end of the nut in the clamping device near one end of the second contact seat. A rack is provided on one side of the gear. The bottom of the rack is fixed to the second contact seat. The rack is arc-shaped and concentric with the hinge axis of the contact blade. The rack meshes with the gear.

[0011] Preferably, the gear is configured such that when the contact blade rotates toward the second contact seat, the meshing action of the gear and rack allows the nut to move toward the contact blade, thereby increasing the clamping force of the contact blade; when the contact blade rotates away from the second contact seat, the nut moves away from the contact blade, thereby reducing the clamping force of the contact blade and reducing wear on the contact blade and the second contact block.

[0012] Preferably, the top ends of both the first contact block and the second contact block are chamfered to facilitate the insertion of the contact blade. The second contact block consists of a fixed part and two movable parts. The bottom of the movable parts is hinged to the fixed part. When the contact blade leaves the second contact block, the two movable parts unfold outward. When the contact blade approaches the second contact block, it presses the two movable parts inward so that the two movable parts contact the fixed part.

[0013] Preferably, the movable part and the fixed part are respectively provided with a limiting block and a limiting groove at the ends adjacent to each other to prevent the movable part and the fixed part from being misaligned when the contact blade is squeezed by the second contact block.

[0014] Preferably, a telescopic groove is provided at one end of the second contact seat near the locking plate. The telescopic plate is slidably connected to the telescopic groove. The telescopic plate is fixed to the inner wall of the telescopic groove by a second spring. A drive groove is provided at the inner end of the telescopic groove. A drive column is slidably connected inside the drive groove. Both ends of the drive column and the end of the telescopic plate near the drive column have inclined surfaces. When the drive column moves into the telescopic groove, it can push the telescopic plate to move towards the locking plate. Without external force, the second spring causes the telescopic plate to return to its original position in the telescopic groove, allowing the end of the drive column to protrude out of the second contact seat.

[0015] Preferably, the top of the latch has a pull ring, the bottom of the pull ring is fixedly connected to a hinge post, the two ends of the hinge post are hinged to the two ends of the contact blade, and the two ends of the hinge post are fixed to the contact blade by a second bolt. The top of the latch has a locking groove, the pull ring has a locking block near the locking groove, the locking block is engaged with the locking groove, the side of the latch has an extension, the bottom of the pull ring is fixedly connected to a drive block, the drive block abuts against the lower part of the extension, when the pull ring rotates, the locking block can be disengaged from the locking groove, the drive block abuts against the extension, the latch overcomes the restoring force of the torsion spring and rotates, and the latching part below the latch separates from the latch plate.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. The present invention, through the interlocking and matching of the latching tongue 8 and the locking plate 7 with the matching and limiting of the protrusion notch, can completely eliminate the relative displacement between the two in the front and rear directions. At the same time, the magnetic telescopic plate 11 and the latching tongue 8 can further suppress the radial shaking of the latching tongue 8, which greatly improves the locking reliability of the locking structure under dynamic working conditions and effectively reduces structural wear caused by unexpected displacement.

[0017] 2. The second contact block 21 of the present invention adopts a hinged structure of fixed part 23 and double movable part 24, and with the matching snap-fit ​​design of limit block 25 and limit groove 26, it can automatically fit together to form a stable contact surface when the contact blade 3 is inserted, avoiding misalignment and displacement between the contact blade 3 and the contact seat; at the same time, the adjustable clamping device 28 can flexibly adjust the clamping force of the contact blade 3 according to the actual working conditions, which can not only ensure the current flow stability under the power-on state, but also reduce the wear of the contact surface after long-term operation and extend the service life of the core components.

[0018] 3. The unlocking operation of the latch structure of the present invention adopts the linkage design of pull ring 12. Only by rotating pull ring 12 can the locking block 16 be disengaged and the locking tongue 8 driven at the same time. The operation process is simple and labor-saving, and no additional tools are required. During the unlocking process, the abutting cooperation between the driving block 18 and the extension part 17 of the locking tongue 8 can ensure the stable rotation of the locking tongue 8 and avoid jamming. At the same time, the locking block 16's fitting design can ensure that the latch will not be accidentally loosened due to external vibration when the circuit is closed, thus taking into account both the convenience of operation and the locking safety.

[0019] 4. The contact blade 3 of this invention adopts a bolt-fixed structure with double blades 4 and connecting column 5, which can always maintain a stable distance between the two blades 4, avoid closing deviation caused by deformation of blades 4 after long-term operation, and ensure precise docking of contact blade 3 with contact blocks on both sides each time the circuit is closed; this structure can also significantly improve the overall rigidity of contact blade 3, reduce the flutter amplitude of contact blade 3 itself in windy conditions, further reduce friction loss with contact seat, and improve the operational reliability in complex outdoor environments.

[0020] 5. By setting a linkage adjustment structure between gear 37 and rack 38, the present invention can automatically increase the clamping force when the contact blade 3 rotates in the closing direction, ensuring contact stability under energized conditions, and automatically reduce the clamping force when the circuit is opened, thereby reducing the frictional loss between the contact blade 3 and the contact block, realizing adaptive adjustment of clamping force, greatly extending the service life of contact components, and reducing the frequency and cost of on-site maintenance.

[0021] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a perspective view of the entire invention; Figure 2 This is a perspective view of the circuit breaker tripping state of the present invention; Figure 3 This is a rear perspective view of the present invention; Figure 4 This is an exploded view of the present invention; Figure 5 This is a perspective view of the latch and the strike plate of the present invention; Figure 6 This is a schematic diagram of the lock tongue and the lock plate in the separated state of the present invention; Figure 7 This is a perspective view of the locking tongue, locking plate, and pull ring of the present invention; Figure 8 This is a perspective view of the second contact block of the present invention; Figure 9 This is a perspective view of the clamping device of the present invention; Figure 10 This is a diagram showing the state changes of the telescopic plate of the present invention; Figure 11 This is a schematic diagram of the gear and rack installation of the present invention.

[0023] The accompanying figure is labeled as follows: 1. First contact seat; 2. Second contact seat; 3. Contact blade; 4. Blade plate; 5. Connecting post; 6. First bolt; 7. Locking plate; 8. Locking tongue; 9. Fastening part; 10. Torsion spring; 11. Telescopic plate; 12. Pull ring; 13. Hinge post; 14. Second bolt; 15. Locking groove; 16. Locking block; 17. Extension part; 18. Drive block; 20. First contact block; 21. Second contact block; 22. Third bolt; 23. Fixing part; 24. Movable part; 25. Limiting block; 26. Limiting groove; 27. Hinge hole; 28. Clamping device; 29. ​​Threaded post; 30. Clamping ring; 31. First spring; 32. Nut; 33. Telescopic groove; 34. Second spring; 35. Drive groove; 36. Drive post; 37. Gear; 38. Rack. Detailed Implementation

[0024] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0025] Example 1: As Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, this embodiment provides a high-reliability outdoor high-voltage disconnect switch, including a first contact seat 1 and a second contact seat 2 respectively installed on two insulators. The first contact seat 1 and the second contact seat 2 are connected by a contact blade 3. One end of the contact blade 3 is hinged to the first contact seat 1, and the other end can be connected or disconnected from the second contact seat 2.

[0026] The contact blade 3 consists of two blades 4 distributed front and rear, with a connecting post 5 between the two blades 4. The two ends of the connecting post 5 have first bolts 6. The two first bolts 6 fix the two blades 4 and the front and rear ends of the connecting post 5 respectively, so that the distance between the two blades 4 remains fixed, thereby facilitating the closing and opening operations.

[0027] like Figure 5 , Figure 6 , Figure 7 As shown, one end of the second contact seat 2 has a locking plate 7, and the contact blade 3 has a locking device near the locking plate 7. The locking device includes a locking tongue 8, the bottom of which has a fastening part 9, which is fastened to the bottom of the locking plate 7. The locking tongue 8 is hinged to both ends of the contact blade 3 by a torsion spring 10. A hinge rod is fixed to the top of the locking tongue 8, which is hinged to the contact blade 3. The torsion spring 10 is sleeved on the outer wall of the hinge rod.

[0028] Above the latch plate 7 is a telescopic plate 11 made of magnets. The telescopic plate can extend towards the first contact seat. The part of the latch that contacts the telescopic plate is made of magnetic material. When the telescopic plate extends, it can be attracted to the contact part of the latch to prevent the latch from shaking.

[0029] It should be noted that in the above scheme, the end of the strike plate 7 near the bolt 8 is also provided with a notch, the width of which matches the width of the bolt 8. Furthermore, the bolt 8 near the notch is provided with a protrusion that matches the notch. When the bolt 8 and the strike plate 7 are engaged, the protrusion matches the notch, thereby preventing the bolt 8 and the strike plate 7 from shifting back and forth.

[0030] like Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, the top of the latch 8 has a pull ring 12, and the bottom of the pull ring 12 is fixedly connected to a hinge post 13. The two ends of the hinge post 13 are hinged to the two ends of the contact blade 3, and the two ends of the hinge post 13 are fixed to the contact blade by a second bolt 14. The top of the latch 8 has a locking groove 15, and the pull ring has a locking block 16 near the locking groove 15. The locking block 16 fits into the locking groove 15. The side of the latch 8 has an extension 17, and the bottom of the pull ring 12 is fixedly connected to a driving block 18. The driving block 18 abuts against the lower part of the extension 17. When the pull ring 12 rotates clockwise (towards...), Figure 7(From the perspective shown), the locking block 16 can be disengaged from the locking groove 15, the driving block 18 can abut against the extension 17, the latch 8 can overcome the restoring force of the torsion spring 10 and rotate, and the latching part 9 below the latch 8 can be separated from the latch plate 7.

[0031] like Figure 2 As shown, a first contact block 20 and a second contact block 21 are respectively provided at one end of the first contact seat 1 and the second contact seat 2 near the contact blade 3. The contact surface of the contact blade 3 is in close contact with the first contact block 20 and the second contact block 21 respectively. The first contact block 20 and the second contact block 21 are respectively fixed to the top of the insulator by the third bolt 22. The top of the first contact block 20 and the second contact block 21 are both provided with chamfers to facilitate the insertion of the contact blade 3.

[0032] like Figure 8 As shown, the second contact block 21 consists of a fixed part 23 and two movable parts 24. The bottom of the movable parts 24 is hinged to the fixed part 23. When the contact blade 3 leaves the second contact block 21, the two movable parts 24 unfold outward. When the contact blade 3 approaches the second contact block 21, it presses the two movable parts 24 inward, so that the two movable parts 24 come into contact with the fixed part 23.

[0033] The movable part 24 and the fixed part 23 are respectively provided with a limiting block 25 and a limiting groove 26 at the adjacent ends to prevent the movable part 24 and the fixed part 23 from being misaligned when the contact blade 3 is squeezed against the second contact block 21, thus ensuring stable contact.

[0034] like Figure 9 As shown, the first contact block 20 has hinge holes 27 at both ends, and the contact blade 3 has clamping devices 28 installed at both ends. The clamping device 28 includes a threaded post 29, which is fixed to the contact blade 3. The head of one end of the threaded post 29 is fixed to the contact blade 3, and the other end of the threaded post 29 is fitted with two clamping rings 30. The two clamping rings 30 are fixed together by a first spring 31. The end of the clamping ring 30 away from the contact blade 3 is threaded with a nut 32. By rotating the nut 32, the clamping ring 30 is moved closer to or away from the contact blade 3, thereby applying different pressures to the contact blade 3, thus adjusting the clamping force of the contact blade 3 on the first contact block and the second contact block 21.

[0035] like Figure 10As shown, the second contact seat 2 has a telescopic groove 33 at one end near the locking plate 7. The telescopic plate 11 is slidably connected to the telescopic groove 33. The telescopic plate 11 and the inner wall of the telescopic groove 33 are fixed by the second spring 34. The inner end of the telescopic groove 33 has a drive groove 35. The drive column 36 is slidably connected inside the drive groove 35. Both ends of the drive column 36 and the end of the telescopic plate 11 near the drive column 36 have inclined surfaces. When the drive column 36 moves into the telescopic groove 33, it can push the telescopic plate 11 to move towards the locking plate 7. Without external force, the second spring 34 causes the telescopic plate 11 to return to the telescopic groove 33, so that the end of the drive column 36 protrudes out of the second contact seat 2.

[0036] In the above scheme, when the contact blade 3 and the second contact seat 2 are closed, the bottom of the contact blade 3 presses against the ends of the two drive columns 36. Under the action of the inclined plane, the two drive columns 36 move into the interior of the telescopic groove 33, thereby pushing the telescopic plate 11 to move towards the locking plate 7.

[0037] Example 2: Figure 11 As shown, the technical solution of this embodiment differs from that of Embodiment 1 in that, in this embodiment, a gear 37 is fixedly connected to the end of the nut 32 in the clamping device 28 near one end of the second contact seat 2, a rack 38 is provided on one side of the gear 37, the bottom of the rack 38 is fixedly connected to the second contact seat 2, the rack 38 is arc-shaped and concentric with the hinge axis of the contact blade 3, and the rack 38 meshes with the gear 37.

[0038] In the above scheme, gear 37 is configured such that when the contact blade 3 rotates towards the second contact seat 2, the meshing of gear 37 and rack 38 allows nut 32 to move towards the contact blade 3, thereby increasing the clamping force of the contact blade 3. When the contact blade 3 rotates away from the second contact seat 2, nut 32 moves away from the contact blade 3, thereby reducing the clamping force of the contact blade 3 and reducing the wear of the contact blade 3 and the second contact block 21. That is, when the contact blade 3 is close to the second contact seat 2, the distance between the two blades 4 in the contact blade 3 is large. When gear 37 meshes with rack 38 and the contact blade 3 continues to rotate towards the second contact seat 2, nut 32 also rotates with the rotation of gear 37, making the clamping ring 30 and the first spring 31 closer to the contact blade 3, thereby reducing the distance between the two blades 4, thus allowing the contact blade 3 to make close contact with the second contact block 21.

[0039] When using: In the initial open state, the contact blade 3 lifts upward around the hinge point of the first contact seat 1, completely separating from the second contact seat 2; at this time, the two movable parts 24 of the second contact block 21 lose the compression of the contact blade 3 and are in a relaxed state of outward expansion; the telescopic plate 11 inside the second contact seat 2 is completely retracted into the telescopic groove 33 under the pulling force of the second spring 34; the end of the drive column 36 protrudes from the surface of the second contact seat 2 under the reset action of the second spring 34; the locking tongue 8 of the locking device maintains the locking part 9 in the upward locking posture under the restoring force of the torsion spring 10; the locking block 16 is fitted into the locking groove 15 to prevent the locking tongue 8 from rotating accidentally.

[0040] When closing is required, rotate the contact blade 3 downwards so that its lower end aligns with the second contact block 21 of the second contact seat 2. The lower end of the contact blade 3 first presses the drive post 36 on the surface of the second contact seat 2. Under the guidance of the end slope, the drive post 36 moves into the telescopic groove 33. Through the cooperation of the slope, it pushes the telescopic plate 11 to overcome the resistance of the second spring 34 and extend towards the locking plate 7. At the same time, the lower end of the contact blade 3 is inserted between the two movable parts 24 of the second contact block 21, pressing the outwardly unfolded movable parts 24 inwards, so that the movable parts 24 and the fixed parts 23 fit tightly together. The limiting block 25 on the movable part 24 is embedded in the limiting groove 26 of the fixed part 23 to prevent misalignment. The two contact surfaces of the contact blade 3 fit tightly with the first contact block 20 and the second contact block 21 respectively to achieve a conductive path. When the contact blade 3 is fully rotated to the closed position, the latching part 9 of the latching tongue 8 engages with the notch at the bottom of the latching plate 7, and the protrusion on the latching tongue 8 is simultaneously embedded into the matching notch of the latching plate 7, thereby limiting the front and rear directions of the latching tongue 8 and the latching plate 7. At this time, the extended telescopic plate 11 engages with the magnetic contact section of the latching tongue 8, further suppressing the radial sway of the latching tongue 8. The locking block 16 remains fitted in the locking groove 15, completing the final locking of the latch and ensuring the stability of the closed state.

[0041] If the linkage structure of Embodiment 2 is adopted, during the process of the contact blade 3 rotating in the closing direction, the gear 37 at the end of the nut 32 will mesh with the arc-shaped rack 38 fixed on the second contact seat 2, driving the nut 32 to rotate in the direction of the contact blade 3, pushing the clamping ring 30 to compress the first spring 31, thereby reducing the distance between the two blades 4, further improving the clamping force of the contact blade 3 on the second contact block 21, and ensuring the contact stability under high current conditions.

[0042] When tripping is required, turn the pull ring 12 clockwise (to... Figure 7(From the perspective of the viewpoint), the pull ring 12 drives the locking block 16 to disengage from the locking groove 15. At the same time, the drive block 18 at the bottom of the pull ring 12 abuts against the extension 17 of the locking tongue 8, overcoming the restoring force of the torsion spring 10 and driving the locking tongue 8 to rotate, causing the latching part 9 to separate from the locking plate 7 and releasing the locking restriction. At this time, lifting the contact blade 3 upwards can complete the opening action. During the opening process, the contact blade 3 leaves the drive column 36, and the telescopic plate 11 retracts into the telescopic groove 33 under the action of the second spring 34. The drive column 36 protrudes out of the surface again, and the two movable parts 24 of the second contact block 21 lose the compression of the contact blade 3 and unfold outwards to return to the initial relaxed state. The maintenance personnel can also rotate the nut 32 as needed to adjust the preload of the clamping device 28 and change the initial clamping force of the contact blade 3 to adapt to different operating conditions.

[0043] In summary, this invention, through the interlocking engagement of the latch 8 and the latch plate 7 combined with the adaptive limiting of the protrusion notch, can completely eliminate the relative forward and backward displacement between the two. Simultaneously, the magnetic telescopic plate 11's adsorption engagement with the latch 8 further suppresses radial wobbling of the latch 8, significantly improving the locking reliability of the latch structure under dynamic operating conditions and effectively reducing structural wear caused by unexpected displacement. The second contact block 21 adopts a hinged structure of the fixed part 23 and the double movable part 24, combined with the adaptive snap-fit ​​design of the limiting block 25 and the limiting groove 26, allowing for insertion of the contact blade 3. The automatic fitting forms a stable contact surface, preventing misalignment or displacement between the contact blade 3 and the contact seat. Simultaneously, the adjustable clamping device 28 can flexibly adjust the clamping force of the contact blade 3 according to actual working conditions, ensuring current flow stability under energized conditions and reducing contact surface wear after long-term operation, thus extending the service life of core components. The unlocking operation of the latch structure adopts a linkage design with the pull ring 12; simply rotating the pull ring 12 simultaneously completes the disengagement of the locking block 16 and the driving action of the locking tongue 8. The operation process is simple and labor-saving, requiring no additional tools. During the unlocking process, the driving block... The abutting engagement between the locking tongue 8 and the extension 17 of the locking tongue 8 ensures the stable rotation of the locking tongue 8 and prevents jamming. Simultaneously, the locking block 16's fitting design ensures that the latch will not accidentally loosen due to external vibration when the circuit is closed, balancing ease of operation and locking safety. The contact blade 3 uses a bolt-fixed structure with double blades 4 and connecting posts 5, maintaining a stable distance between the two blades 4 and preventing closing deviations caused by blade deformation after long-term operation. This ensures precise alignment between the contact blade 3 and the contact blocks on both sides each time the circuit is closed. This structure also significantly improves the performance of the contact blade 3. The overall rigidity is improved, reducing the flutter amplitude of the contact blade 3 in windy conditions, further reducing frictional loss with the contact seat, and improving operational reliability in complex outdoor environments. By setting a linkage adjustment structure between gear 37 and rack 38, the clamping force can be automatically increased when the contact blade 3 rotates in the closing direction to ensure contact stability under energized conditions. When the circuit is opened, the clamping force is automatically reduced to reduce frictional loss between the contact blade 3 and the contact block, realizing adaptive adjustment of clamping force, greatly extending the service life of contact components, and reducing the frequency and cost of on-site maintenance.

[0044] In the description of this specification, references to terms such as "an embodiment," "example," "specific 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 invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0047] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-reliability outdoor high-voltage disconnecting switch, comprising a first contact seat and a second contact seat respectively mounted on two insulators, the first contact seat and the second contact seat being connected by contact blades, characterized in that: One end of the contact blade is hinged to the first contact seat, and the other end can be connected or disconnected from the second contact seat. One end of the second contact seat has a locking plate, and the contact blade has a locking device near the locking plate. The locking device includes a latch, the bottom of which has a latching part that latches with a locking plate. The latch is hinged to both ends of the contact blade by a torsion spring. Above the locking plate is a telescopic plate made of magnets. The telescopic plate can extend toward the first contact seat. The part of the latch that contacts the telescopic plate is made of magnetic material. When the telescopic plate extends, it can attract the contact part of the latch to prevent the latch from shaking.

2. The high-reliability outdoor high-voltage disconnector as described in claim 1, characterized in that: The contact blade consists of two blades distributed front and back, with a connecting post between the two blades. The connecting post has two first bolts at both ends, which fix the two blades and the front and back ends of the connecting post respectively, so that the distance between the two blades remains fixed.

3. The high-reliability outdoor high-voltage disconnect switch as described in claim 1, characterized in that: The first contact seat and the second contact seat are respectively provided with a first contact block and a second contact block at one end near the contact blade. The contact surface of the contact blade is in close contact with the first contact block and the second contact block, respectively. The first contact block and the second contact block are respectively fixed to the top of the insulator by a second bolt.

4. A high-reliability outdoor high-voltage disconnector as described in claim 3, characterized in that: The first contact block has hinge holes at both ends, and clamping devices are installed at both ends of the contact blade. The clamping device includes a threaded post, which is fixed through the contact blade. The head of one end of the threaded post is fixed to the contact blade, and two clamping rings are sleeved on the other end of the threaded post. The two clamping rings are fixed together by a first spring. A nut is threaded to the end of the clamping ring away from the contact blade. By rotating the nut, the clamping ring moves closer to and away from the contact blade, thereby applying different pressures to the contact blade and adjusting the clamping force of the contact blade.

5. A high-reliability outdoor high-voltage disconnector as described in claim 4, characterized in that: A gear is fixed to the end of the nut in the clamping device near one end of the second contact seat. A rack is provided on one side of the gear. The bottom of the rack is fixed to the second contact seat. The rack is arc-shaped and concentric with the hinge axis of the contact blade. The rack meshes with the gear.

6. A high-reliability outdoor high-voltage disconnector as described in claim 5, characterized in that: The gear configuration is such that when the contact blade rotates towards the second contact seat, the meshing of the gear and rack allows the nut to move towards the contact blade, thereby increasing the clamping force of the contact blade. When the contact blade rotates away from the second contact seat, the nut moves away from the contact blade, thereby reducing the clamping force of the contact blade and reducing the wear of the contact blade and the second contact block.

7. A high-reliability outdoor high-voltage disconnector as described in claim 3, characterized in that: The tops of both the first and second contact blocks are chamfered to facilitate the insertion of the contact blade. The second contact block consists of a fixed part and two movable parts. The bottom of the movable parts is hinged to the fixed part. When the contact blade leaves the second contact block, the two movable parts unfold outward. When the contact blade approaches the second contact block, it presses the two movable parts inward, so that the two movable parts contact the fixed part.

8. A high-reliability outdoor high-voltage disconnector as described in claim 7, characterized in that: The movable part and the fixed part are respectively provided with a limiting block and a limiting groove at the end adjacent to each other to prevent the movable part and the fixed part from being misaligned when the contact blade is squeezed by the second contact block.

9. A high-reliability outdoor high-voltage disconnector as described in claim 1, characterized in that: The second contact seat has a telescopic groove at one end near the locking plate. The telescopic plate is slidably connected to the telescopic groove, and the telescopic plate is fixed to the inner wall of the telescopic groove by a second spring. The inner end of the telescopic groove has a drive groove, and a drive column is slidably connected inside the drive groove. Both ends of the drive column and the end of the telescopic plate near the drive column have inclined surfaces. When the drive column moves into the telescopic groove, it can push the telescopic plate to move towards the locking plate. Without external force, the second spring causes the telescopic plate to return to the telescopic groove, allowing the end of the drive column to protrude out of the second contact seat.

10. A high-reliability outdoor high-voltage disconnector as described in claim 1, characterized in that: The top of the latch has a pull ring, and the bottom of the pull ring is fixed with a hinge post. The two ends of the hinge post are hinged to the two ends of the contact blade, and the two ends of the hinge post are fixed to the contact blade by a second bolt. The top of the latch has a locking groove, and the pull ring has a locking block near the locking groove. The locking block fits into the locking groove. The side of the latch has an extension, and the bottom of the pull ring is fixed with a drive block. The drive block abuts against the lower part of the extension. When the pull ring rotates, it can make the locking block leave the locking groove, and make the drive block abut against the extension, so that the latch overcomes the restoring force of the torsion spring and rotates the latch, so that the latching part below the latch separates from the strike plate.

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