A locking device for a three-column horizontal rotary high-voltage disconnector

Abstract

This invention relates to the field of high-voltage disconnecting switch technology, and more specifically to a locking device for a three-column horizontal rotary high-voltage disconnecting switch. The locking device includes a mounting bracket and a locking mechanism. The mounting bracket is fixed to the interlocking brackets of the left, middle, and right sets of switch columns, and is provided with a left mounting plate, a left linkage mounting plate, a right linkage mounting plate, and a right mounting plate, each with through holes. The locking mechanism includes a left locking rod, a right locking rod, and corresponding left locking components, left linkage locking components, right locking components, and right linkage locking components. The left locking rod passes through the through holes in the left mounting plate and the left linkage mounting plate, and its two ends are connected to the left locking components and the left linkage locking components through adjustable mounting structures. The right locking rod passes through the through holes in the right mounting plate and the right linkage mounting plate, and its two ends are connected to the right locking components and the right linkage locking components through adjustable mounting structures. This invention has a compact structure, is easy to install and maintain, and offers high safety.

Description

Technical Field

[0001] This invention relates to the field of high-voltage disconnect switch technology, and more specifically to a locking device for a three-column horizontal rotary high-voltage disconnect switch. Background Technology

[0002] With economic growth and improved living standards, the demand for electricity is constantly increasing, prompting the continuous expansion of the power system. In this process, many new high-voltage disconnect switches are installed, while some older ones inevitably need maintenance and replacement. Therefore, it is crucial to ensure the proper installation, commissioning, maintenance, and replacement of high-voltage disconnect switches within the stipulated timeframe.

[0003] The switch body of a three-post horizontal rotary high-voltage disconnector is typically 7 to 8 meters high. The mechanical interlocking device is usually installed on the switch base frame, which is usually located at a high position. This makes it inconvenient to install the mechanical interlocking device, difficult to maintain, and impossible to directly observe the interlocking status, thus increasing the difficulty and risk of installation and maintenance.

[0004] Therefore, it is urgent to propose a new technical solution to address the problem. Summary of the Invention

[0005] (a) Technical problems to be solved Based on this, the present invention provides a locking device for a three-column horizontal rotary high-voltage disconnector, which is easy to install and maintain and has high safety.

[0006] (II) Technical Solution To solve the above-mentioned technical problems, the present invention provides a locking device for a three-column horizontal rotary high-voltage disconnecting switch. The high-voltage disconnecting switch includes three sets of switch columns: a left switch column with a left stationary contact, a middle switch column with a conductive rod, and a right switch column with a right stationary contact, as well as a locking device. Each set of switch columns includes a vertical connecting rod and a latching bracket, with the vertical connecting rod installed on the side of the latching bracket. The conductive rod on the middle switch column rotates, and its two ends respectively perform closing or opening actions with the left stationary contact and the right stationary contact. When the closing or opening action is completed... When completed, the locking device axially limits the vertical connecting rods on the three sets of switch posts; the locking device includes a mounting bracket and a locking mechanism; wherein, the mounting bracket includes a left locking mounting frame fixedly mounted on the left latch bracket of the left switch post and a left mounting plate mounted on the left locking mounting frame, a middle locking mounting frame fixedly mounted on the middle latch bracket of the middle switch post and a left linkage mounting plate and a right linkage mounting plate mounted on the middle locking mounting frame, and a right locking mounting frame fixedly mounted on the right latch bracket of the right switch post and a right linkage mounting plate mounted on the right latch bracket. A right mounting plate on the right locking mounting bracket; through holes are provided on the left mounting plate, the left linkage mounting plate, the right linkage mounting plate, and the right mounting plate; the locking mechanism includes a left locking assembly and a left locking rod on the left vertical connecting rod of the left switch column, a left linkage locking assembly and a right linkage locking assembly on the middle vertical connecting rod of the middle switch column, and a right locking assembly and a right locking rod on the right vertical connecting rod of the right switch column; the left locking rod is horizontally arranged and passes through the through holes on the left mounting plate and the left linkage mounting plate, and both ends of the left locking rod... The left locking assembly and the left linkage locking assembly are connected to each other via adjustable mounting structures. The left locking rod moves axially to open or close the left locking assembly and the left linkage locking assembly. The right locking rod is horizontally positioned and passes through the through holes on the right mounting plate and the right linkage mounting plate. Both ends of the right locking rod are connected to the right locking assembly and the right linkage locking assembly via adjustable mounting structures. The right locking rod moves axially to open or close the right locking assembly and the right linkage locking assembly.

[0007] Preferably, the left locking assembly includes a first locking plate having a first strip-shaped groove extending axially along the left locking rod, a first clamp fixed to the left vertical connecting rod, and a first locking disc fixed to the top of the first clamp; the first locking plate is provided with a first retaining member, and the first locking disc is provided with a first retaining part cooperating with the first retaining member, the retaining and separating directions of the first retaining member and the first retaining part coinciding with the axial direction of the left locking rod; the left vertical connecting rod passes through the first strip-shaped groove, the first locking plate is connected to the left end of the left locking rod through the adjustable mounting structure, and the left locking rod slides axially through the first strip-shaped groove, causing the first retaining member and the first retaining part to... The locking and disengaging mechanism, thereby linking the opening or closing of the rotation of the left vertical connecting rod; the right locking assembly includes a second locking plate having a second slot extending along the axial direction of the right locking rod, a second clamp fixed to the right vertical connecting rod, and a second locking disc fixed to the top of the second clamp; the second locking plate is provided with a second locking member, and the second locking disc is provided with a second locking part that cooperates with the second locking member, the locking and disengaging directions of the second locking member and the second locking part coincide with the axial direction of the left locking rod; the right vertical connecting rod passes through the second slot, the second locking plate is connected to the left end of the right locking rod through the adjustable mounting structure, and the right locking rod passes through the second slot along the second slot. Axial sliding causes the second latching member and the second latching part to latch and separate, thereby linkage opening or closing the rotation of the right vertical connecting rod; the left linkage locking assembly includes a first linkage locking plate having a third strip-shaped groove extending axially along the right side of the left locking rod, a third clamp fixed on the middle vertical connecting rod, and a third locking disc fixed on the top of the third clamp; the first linkage locking plate is provided with a third latching member, and the third locking disc is provided with a third latching part that cooperates with the third latching member, the latching and separation direction of the third latching member and the third latching part coincides with the axial direction of the left locking rod; the middle vertical connecting rod passes through the third strip-shaped groove, and the first linkage locking plate and the left locking rod... The right end of the rod is connected via the adjustable mounting structure. The left locking rod slides axially through the third slot, causing the third clamping member and the third clamping part to engage and disengage, thereby opening or closing the rotation of the middle vertical connecting rod in a linkage manner. The right linkage locking assembly includes a second linkage locking plate having a fourth slot extending axially along the left side of the right locking rod, a fourth clamp fixed on the middle vertical connecting rod, and a fourth locking disc fixed on the top of the fourth clamp. The second linkage locking plate is provided with a fourth clamping member, and the fourth locking disc is provided with a fourth clamping part that cooperates with the fourth clamping member. The engaging and disengaging directions of the fourth clamping member and the fourth clamping part coincide with the axial direction of the right locking rod.The middle vertical connecting rod passes through the fourth slot. The second linkage locking plate is connected to the left end of the right locking rod through the adjustable mounting structure. The right locking rod slides axially through the fourth slot, causing the fourth locking member and the fourth locking part to engage and disengage, thereby linkageally opening or closing the rotation of the middle vertical connecting rod.

[0008] Preferably, the adjustable mounting structure includes a connecting flange connected to the left locking rod and the right locking rod, and a fixed flange connected to the first locking plate, the first linkage locking plate, the second locking plate and the second linkage locking plate. The fixed flange and the connecting flange are connected by an adjusting screw assembly.

[0009] Preferably, the adjusting screw assembly includes a plurality of adjusting screws arranged in a ring around the axial direction and passing through the fixed flange and the connecting flange, and adjusting nuts passing through the adjusting screws; the adjusting screws pass through the fixed flange and the connecting flange axially, with one end of the adjusting screw fixedly connected to the connecting flange, and the other end passing through the fixed flange and threadedly engaged with the adjusting nut; rotating the adjusting nut causes it to move axially on the adjusting screw, thereby pushing the fixed flange to move closer to or further away from the connecting flange, thus achieving precise adjustment of the relative positions of the first locking plate, the first linkage locking plate, the second locking plate, and the second linkage locking plate with the corresponding left locking rod and the right locking rod.

[0010] Preferably, the adjustable mounting structure further includes a first fixing plate extending from the fixed flange toward the first locking plate and fixedly connected to the first locking plate, a second fixing plate extending from the fixed flange toward the second locking plate and fixedly connected to the second locking plate, a third fixing plate extending from the fixed flange toward the first linkage locking plate and fixedly connected to the first linkage locking plate, and a fourth fixing plate extending from the fixed flange toward the second linkage locking plate and fixedly connected to the second linkage locking plate; the first strip groove, the second strip groove, the third strip groove, and the fourth strip groove are located on the first locking plate and the first linkage locking plate. An opening structure is formed at one end of the movable locking plate, the second locking plate, and the second linkage locking plate near the fixed flange; the first fixing plate and the first locking plate are fixedly connected to the opening structure facing the fixed flange to cooperate in forming the first strip groove; the second fixing plate and the second locking plate are fixedly connected to the opening structure facing the fixed flange to cooperate in forming the second strip groove; the third fixing plate and the first linkage locking plate are fixedly connected to the opening structure facing the fixed flange to cooperate in forming the third strip groove; the fourth fixing plate and the second linkage locking plate are fixedly connected to the opening structure facing the fixed flange to cooperate in forming the fourth strip groove.

[0011] Preferably, the adjustable mounting structure further includes four locking components, which are respectively locked above the first locking plate, the first linkage locking plate, the second locking plate, and the second linkage locking plate; each locking component includes two locking blocks, which are fixedly connected by screws, and the opposite sides of the two locking blocks form an arc surface corresponding to the size of the vertical connecting rod.

[0012] Preferably, the locking mechanism further includes a left limiting component disposed on the left mounting plate for limiting the left vertical link, a right limiting component disposed on the right mounting plate for limiting the right vertical link, a left linkage limiting component disposed on the left linkage mounting plate for limiting the left side of the middle vertical link, and a right linkage limiting component disposed on the right linkage mounting plate for limiting the right side of the middle vertical link.

[0013] Preferably, the left limiting assembly includes a first fixing seat fixedly disposed on the left mounting plate and a first limiting block for abutting and limiting the left vertical connecting rod; the first limiting block and the first fixing seat are connected by a limiting screw assembly to adjust the distance between the first fixing seat and the first limiting block, thereby adjusting the installation distance between the first limiting block and the left vertical connecting rod, and the side of the first limiting block near the left vertical connecting rod forms an arc surface that cooperates with the left vertical connecting rod; the right limiting assembly includes a second fixing seat fixedly disposed on the right mounting plate and a second limiting block for abutting and limiting the right vertical connecting rod; the second limiting block and the second fixing seat are connected by a limiting screw assembly to adjust the installation distance between the second fixing seat and the left vertical connecting rod. The distance between the fixed seat and the second limiting block is adjusted to regulate the installation distance between the second limiting block and the right vertical connecting rod. The side of the second limiting block near the right vertical connecting rod has an arc surface that mates with the right vertical connecting rod. The left linkage limiting assembly includes a third fixed seat fixedly mounted on the left linkage mounting plate and a third limiting block for supporting and limiting the middle vertical connecting rod. The third limiting block and the third fixed seat are connected by a limiting screw assembly to adjust the distance between the third fixed seat and the third limiting block, thereby adjusting the installation distance between the third limiting block and the middle vertical connecting rod. The side of the third limiting block near the middle vertical connecting rod has an arc surface that mates with the middle vertical connecting rod. The right... The linkage limiting assembly includes a fourth fixed seat fixedly mounted on the right linkage mounting plate and a fourth limiting block for further supporting and limiting the middle vertical connecting rod; the fourth limiting block and the fourth fixed seat are connected by a limiting screw assembly to adjust the distance between the fourth fixed seat and the fourth limiting block, thereby adjusting the installation distance between the fourth limiting block and the middle vertical connecting rod; the side of the fourth limiting block near the middle vertical connecting rod has an arc surface that mates with the middle vertical connecting rod; wherein, the limiting screw assembly includes a plurality of first limiting screws arranged in a ring around the axis and passing through the first limiting block and the first fixed seat, a first limiting nut passing through the first limiting screw, and a plurality of rings arranged in a ring around the axis. The system includes a second limiting screw rod and a second limiting nut inserted between the second limiting block and the second fixed seat; several third limiting screw rods and third limiting nuts inserted between the third limiting block and the third fixed seat, arranged in a ring around the axial direction; and several fourth limiting screw rods and fourth limiting nuts inserted between the fourth limiting block and the fourth fixed seat, arranged in a ring around the axial direction; the first limiting screw rod is inserted axially between the first limiting block and the first fixed seat, with one end fixedly connected to the first limiting block and the other end passing through the first fixed seat and threadedly engaged with the first limiting nut.Rotating the first limiting nut causes it to move axially along the first limiting screw, thereby pushing the first fixed seat to move closer to or further away from the first limiting block, thus limiting and adjusting the left vertical connecting rod. The second limiting screw passes axially between the second limiting block and the second fixed seat, with one end fixedly connected to the second limiting block and the other end passing through the second fixed seat and threadedly engaged with the second limiting nut. Rotating the second limiting nut causes it to move axially along the second limiting screw, thereby pushing the second fixed seat to move closer to or further away from the second limiting block, thus limiting and adjusting the right vertical connecting rod. The third limiting screw passes axially between the third limiting block and the third fixed seat, and the third limiting screw... One end of the first limiting rod is fixedly connected to the third limiting block, and the other end passes through the third fixed seat and is threadedly engaged with the third limiting nut. Rotating the third limiting nut causes it to move axially along the third limiting screw, thereby pushing the third fixed seat to move closer to or further away from the third limiting block, thus achieving the limiting and adjustment of the middle vertical connecting rod. The fourth limiting screw passes axially between the fourth limiting block and the fourth fixed seat, with one end fixedly connected to the fourth limiting block and the other end passing through the fourth fixed seat and threadedly engaged with the fourth limiting nut. Rotating the fourth limiting nut causes it to move axially along the fourth limiting screw, thereby pushing the fourth fixed seat to move closer to or further away from the fourth limiting block, thus achieving the limiting and adjustment of the middle vertical connecting rod.

[0014] Preferably, a first vertical plate extends downward from the right end of the left mounting plate toward the left locking rod, and a first support member is connected to the first vertical plate; the first vertical plate has a first U-shaped groove with an opening facing downward, and the first support member has a first connecting groove with an opening facing upward; the first U-shaped groove is connected to the first connecting groove, such that the first U-shaped groove and the first connecting groove define a first through hole for the left locking rod to pass through; a first rolling member is mounted on the first support member, which is rotatable along its own axis, and the rotation axis of the first rolling member is perpendicular to the length direction of the left locking rod, and the first rolling member is used to contact and support the left side of the left locking rod. The right mounting plate extends downward toward the right locking rod from its left end, and a second bearing member is connected to the second vertical plate. The second vertical plate has a second U-shaped groove with its opening facing downward, and the second bearing member has a second connecting groove with its opening facing upward. The second U-shaped groove is connected to the second connecting groove, so that the second U-shaped groove and the second connecting groove define a second through hole for the right locking rod to pass through. A second rolling member that can rotate along its own axis is mounted on the second bearing member. The rotation axis of the second rolling member is perpendicular to the length direction of the right locking rod, and the second rolling member is used to contact and support the right end of the right locking rod. A third vertical plate extends downward from the left end of the left linkage mounting plate toward the left locking rod, and a third bearing member is connected to the third vertical plate; the third vertical plate has a third U-shaped groove with an opening facing downward, and the third bearing member has a third connecting groove with an opening facing upward; the third U-shaped groove is connected to the third connecting groove so that the third U-shaped groove and the third connecting groove define a third through hole for the left locking rod to pass through; a third rolling member that can rotate along its own axis is mounted on the third bearing member, the rotation axis of the third rolling member is perpendicular to the length direction of the left locking rod, and the third rolling member is used to contact and support the right end of the left locking rod; A fourth vertical plate extends downward from the right end of the right linkage mounting plate toward the right locking rod, and a fourth bearing member is connected to the fourth vertical plate; the fourth vertical plate has a fourth U-shaped groove with its opening facing downward, and the fourth bearing member has a fourth connecting groove with its opening facing upward, the fourth U-shaped groove being connected to the fourth connecting groove so that the fourth U-shaped groove and the fourth connecting groove define a fourth through hole for the right locking rod to pass through; a fourth rolling member that can rotate along its own axis is mounted on the fourth bearing member, the rotation axis of the fourth rolling member being perpendicular to the length direction of the right locking rod, and the fourth rolling member being used to contact and support the left end of the right locking rod.

[0015] Preferably, the left locking mounting bracket extends towards the left mounting plate to form a first support base; the first support base has a plurality of first adjustment holes, and the left mounting plate has a first fixing hole that matches the first adjustment holes; a first adjusting member passes through the first fixing hole and is fixed in the first adjustment hole to adjust and fix the position of the left mounting plate on the first support base; the right locking mounting bracket extends towards the right mounting plate to form a second support base; the second support base has a plurality of second adjustment holes, and the right mounting plate has a second fixing hole that matches the second adjustment holes; a second adjusting member passes through the second fixing hole and is fixed in the second adjustment hole to adjust and fix the right mounting plate on the second support base. Position: The central locking mounting bracket extends towards the left linkage mounting plate and the right linkage mounting plate, extending into a third support base and a fourth support base; the third support base has several third adjustment holes, and the left linkage mounting plate has a third fixing hole that matches the third adjustment holes. A third adjustment member passes through the third fixing hole and is fixed inside the third adjustment hole to adjust and fix the position of the left linkage mounting plate on the second support base; the fourth support base has several fourth adjustment holes, and the right linkage mounting plate has a fourth fixing hole that matches the fourth adjustment holes. A fourth adjustment member passes through the fourth fixing hole and is fixed inside the fourth adjustment hole to adjust and fix the position of the right linkage mounting plate on the fourth support base.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention has at least the following technical effects: 1. This invention reduces the installation and maintenance height and improves operational safety by directly installing the interlocking device on the latching bracket of each switch column.

[0017] 2. The left locking rod of the left locking assembly provided by the present invention has its left end passing through the first through hole on the left mounting plate and its right end passing through the third through hole on the left linkage mounting plate. The left locking rod of the right locking assembly has its left end passing through the second through hole on the right mounting plate and its right end passing through the fourth through hole on the right linkage mounting plate. It is connected to the locking mechanism through an adjustable mounting structure, thereby realizing the axial linkage limit of the left vertical connecting rod, the middle vertical connecting rod and the right vertical connecting rod on the three sets of switch columns: the left switch column, the middle switch column and the right switch column.

[0018] 3. The present invention has a compact structure, direct transmission, low installation and maintenance difficulty, and high safety. It can effectively ensure the reliable locking of each switch column after the closing or opening action is completed, avoid misoperation, and improve the overall operational reliability of the disconnecting switch. Attached Figure Description

[0019] 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 locking device for a three-column horizontal rotary high-voltage disconnector provided by the present invention; Figure 2 yes Figure 1 Another structural schematic diagram of the locking device of the three-column horizontal rotary high-voltage disconnector provided by the present invention; Figure 3 yes Figure 1 Structural schematic diagram of the steel support frame and locking device; Figure 4 yes Figure 2 Structural schematic diagram of the steel support frame and locking device; Figure 5 yes Figure 3 A structural schematic diagram of the central locking device, mounting plate, and vertical connecting rod; Figure 6 yes Figure 4 A structural schematic diagram of the central locking device, mounting plate, and vertical connecting rod; Figure 7 yes Figure 5 Schematic diagram of the locking device and vertical connecting rod; Figure 8 yes Figure 6 Schematic diagram of the locking device and vertical connecting rod; Figure 9 yes Figure 5 A magnified view of a section at point A in the middle; Figure 10 yes Figure 9 A schematic diagram of the assembly structure of the central locking mounting bracket, left linkage limit assembly, right linkage limit assembly and central vertical connecting rod; Figure 11 yes Figure 9 A schematic diagram of the assembly structure of the left-right linkage locking assembly, the right-right linkage locking position assembly, the adjustable mounting structure, and the middle vertical connecting rod; Figure 12 yes Figure 11 A schematic diagram of the assembly structure of the connecting flange, fixed flange, first linkage locking plate, third locking plate, third clamping part, second linkage locking plate, fourth locking plate, fourth clamping part, left locking rod, right locking rod and middle vertical connecting rod. Figure 13 yes Figure 7 A magnified view of a section at point B in the middle; Figure 14 yes Figure 8 A magnified view of a section at point C; Figure 15 This is a structural diagram of the left linkage mounting plate and the right linkage mounting plate provided by the locking device; Figure 16 yes Figure 15 Another structural diagram of the left and right linkage mounting plates; Figure 17 This is a structural diagram of the left mounting plate provided by the locking device; Figure 18 yes Figure 17 Another structural diagram of the left-center mounting plate; Figure 19 This is a schematic diagram of the right-hand drive mounting plate provided by the locking device; Figure 20 yes Figure 19 A structural schematic diagram of the mounting plate in the middle right from another perspective.

[0020] Explanation of the labels for the main components in the diagram: 1000, Three-post horizontal rotary high-voltage disconnector; 100. Locking device; 10. Mounting bracket; 11. Left locking mounting bracket; 111. First support seat; 12. Right locking mounting bracket; 121. Second support seat; 13. Middle locking mounting bracket; 131. Third support seat; 132. Fourth support seat; 20. Mounting plate; 21. Left mounting plate; 211. First adjusting member; 212. First vertical plate; 213. First bearing member; 214. First rolling member; 215. First U-shaped groove; 216. First connecting groove; 217. First through hole; 22. Right mounting plate; 221. Second adjusting member; 222. Second vertical plate; 223. Second bearing member; 224. Second rolling member; 225. Second U-shaped groove; 226. Second connecting groove; 227. Second through hole; 23. Left linkage mounting plate; 231. Third adjusting component; 232. Third vertical plate; 233. Third bearing component; 234. Third rolling component; 235. Third U-shaped groove; 236. Third connecting groove; 237. Third through hole; 24. Right linkage mounting plate; 241. Fourth adjusting component; 242. Fourth vertical plate; 243. Fourth bearing component; 244. Fourth rolling component; 245. Fourth U-shaped groove; 246. Fourth connecting groove; 247. Fourth through hole; 30. Locking mechanism; 31. Left locking assembly; 311. First locking plate; 3111. First strip groove; 3112. First holding member; 312. First clamp; 313. First locking disc; 314. First holding part; 315. First fixing plate; 316. Left locking rod; 32. Right locking assembly; 321. Second locking plate; 3211. Second slot; 3212. Second holding member; 322. Second clamp; 323. Second locking disc; 324. Second holding part; 325. Second fixing plate; 326. Right locking rod; 33. Left-hand linkage locking assembly; 331. First linkage locking plate; 3311. Third strip groove; 3312. Third clamping member; 332. Third clamp; 333. Third locking disc; 334. Third clamping part; 335. Third fixing plate; 34. Right-hand linkage locking assembly; 341. Second linkage locking plate; 3411. Fourth strip groove; 3412. Fourth clamping member; 342. Fourth clamp; 343. Fourth locking disc; 344. Fourth clamping part; 345. Fourth fixing plate; 35. Left limiting component; 351. First fixed seat; 352. First limiting block; 36. Right limit component; 361. Second fixing seat; 362. Second limit block; 37. Left linkage limit component; 371. Third fixing seat; 372. Third limit block; 38. Right-hand linkage limit component; 381. Fourth fixed seat; 382. Fourth limit block; 39. Limiting screw assembly; 391. First limiting screw; 392. First limiting nut; 393. Second limiting screw; 394. Second limiting nut; 395. Third limiting screw; 396. Third limiting nut; 397. Fourth limiting screw; 398. Fourth limiting nut; 40. Adjustable installation structure; 41. Connecting flange; 42. Fixed flange; 43. Adjusting screw assembly; 431. Adjusting screw; 432. Adjusting nut; 44. Locking element; 441. Locking block; 442. Screw; 200. Switch post; 201. Left switch post; 202. Middle switch post; 203. Right switch post; 300, Left stationary contact; 400, Conductive rod; 500, Right stationary contact; 600, Vertical link; 601, Left vertical link; 602, Middle vertical link; 603, Right vertical link; 700, Partitioned Bracket; 701, Left Partitioned Bracket; 702, Middle Partitioned Bracket; 703, Right Partitioned Bracket. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] Please see Figures 1 to 20 To address the problems of inconvenient installation, difficult maintenance, inability to directly observe the interlocking status, and high maintenance difficulty and risk associated with mechanical interlocking of disconnect switches, this invention provides an interlocking device 100 for a three-column horizontal rotary high-voltage disconnect switch 1000. The high-voltage disconnect switch 1000 includes three sets of switch columns 200: a left switch column 201 with a left stationary contact 300, a middle switch column 202 with a conductive rod 400, and a right switch column 203 with a right stationary contact 500, as well as an interlocking device 100. Locking device 100; each set of switch posts 200 includes a vertical connecting rod 600 and a latching bracket 700, the vertical connecting rod 600 is installed on the side of the latching bracket 700; the conductive rod 400 on the middle switch post 202 rotates, and the two ends of the conductive rod 400 respectively perform closing or opening actions with the left stationary contact 300 and the right stationary contact 500; when the closing or opening action is completed, the locking device 100 axially limits the vertical connecting rod 600 on the three sets of switch posts 200.

[0024] Further, the locking device 100 includes a mounting bracket 10 and a locking mechanism 30; wherein, the mounting bracket 10 includes a left locking mounting frame 11 fixedly mounted on the left interlocking bracket 701 of the left switch post 201 and a left mounting plate 21 mounted on the left locking mounting frame 11, a middle locking mounting frame 13 fixedly mounted on the middle interlocking bracket 702 of the middle switch post 202 and a left linkage mounting plate 23 and a right linkage mounting plate 24 respectively mounted on the middle locking mounting frame 13, a right locking mounting frame 12 fixedly mounted on the right interlocking bracket 703 of the right switch post 203 and a right mounting plate 22 mounted on the right locking mounting frame 12; the left mounting plate 21, the left linkage mounting plate 23, the right linkage mounting plate 24 and the right mounting plate 22 are all provided with through holes (not shown in the figure); the locking mechanism 30 includes a left locking assembly 31 and a left locking rod 316 mounted on the left vertical connecting rod 601 of the left switch post 201, and a left locking assembly 31 and a left locking rod 316 mounted on the left vertical connecting rod 601 of the middle switch post 202. The left linkage locking assembly 33 and the right linkage locking assembly 34 are located on the middle vertical link 602, and the right locking assembly 32 and the right locking rod 326 are located on the right vertical link 603 of the right switch post 203; the left locking rod 316 is horizontally arranged and passes through the through holes on the left mounting plate 21 and the left linkage mounting plate 23. The two ends of the left locking rod 316 are respectively connected to the left locking assembly 31 and the left linkage locking assembly 33 through the adjustable mounting structure 40. The movement of the right locking rod 326 along its axial direction is used to open or close the left locking assembly 31 and the left linkage locking assembly 33. The right locking rod 326 is horizontally set and passes through the through holes on the right mounting plate 22 and the right linkage mounting plate 24. The two ends of the right locking rod 326 are connected to the right locking assembly 32 and the right linkage locking assembly 34 through the adjustable mounting structure 40, respectively. The movement of the right locking rod 326 along its axial direction is used to open or close the right locking assembly 32 and the right linkage locking assembly 34.

[0025] In one embodiment, the left locking assembly 31 includes a first locking plate 311 having a first strip groove 3111 extending axially along the left locking rod 316, a first clamp 312 fixed to the left vertical connecting rod 601, and a first locking disc 313 fixed to the top of the first clamp 312; the first locking plate 311 is provided with a first holding member 3112, and the first locking disc 313 is provided with a first holding part 314 that cooperates with the first holding member 3112; the holding and separating directions of the first holding member 3112 and the first holding part 314 coincide with the axial direction of the left locking rod 316.

[0026] Specifically, the left vertical connecting rod 601 passes through the first strip groove 3111. The first locking plate 311 is connected to the left end of the left locking rod 316 through the adjustable mounting structure 40. The left locking rod 316 slides axially through the first strip groove 3111, so that the first clamping member 3112 and the first clamping part 314 are clamped and separated, thereby opening or closing the rotation of the left vertical connecting rod 601 in a linkage.

[0027] Furthermore, the right locking assembly 32 includes a second locking plate 321 having a second strip groove 3211 extending axially along the right locking rod 326, a second clamp 322 fixed to the right vertical connecting rod 603, and a second locking disc 323 fixed to the top of the second clamp 322; the second locking plate 321 is provided with a second holding member 3212, and the second locking disc 323 is provided with a second holding part 324 that cooperates with the second holding member 3212; the holding and separating directions of the second holding member 3212 and the second holding part 324 coincide with the axial direction of the right locking rod 326.

[0028] Specifically, the right vertical connecting rod 603 passes through the second strip groove 3211, and the second locking plate 321 is connected to the left end of the right locking rod 326 through the adjustable mounting structure 40. The right locking rod 326 slides axially through the second strip groove 3211, so that the second holding member 3212 and the second holding part 324 can be engaged and disengaged, thereby opening or closing the rotation of the right vertical connecting rod 603 in a linkage.

[0029] Furthermore, the left linkage locking assembly 33 includes a first linkage locking plate 331 having a third strip groove 3311 extending axially along the right side of the left locking rod 316, a third clamp 332 fixed on the middle vertical connecting rod 602, and a third locking disc 333 fixed on the top of the third clamp 322; the first linkage locking plate 331 is provided with a third holding member 3312, and the third locking disc 333 is provided with a third holding part 334 that cooperates with the third holding member 3312; the holding and separating directions of the third holding member 3312 and the third holding part 334 coincide with the axial direction of the right side of the left locking rod 316.

[0030] Specifically, the middle vertical connecting rod 602 passes through the third strip groove 3311. The first linkage locking plate 331 is connected to the right end of the left locking rod 316 through the adjustable mounting structure 40. The left locking rod 316 slides axially through the third strip groove 3311, so that the third holding member 3312 and the third holding part 334 can be engaged and disengaged, thereby opening or closing the rotation of the middle vertical connecting rod 602 in a linkage manner.

[0031] Furthermore, the right linkage locking assembly 34 includes a second linkage locking plate 341 having a fourth strip groove 3411 extending axially along the left side of the right locking rod 326, a fourth clamp 342 fixed on the central vertical connecting rod 602, and a fourth locking disc 343 fixed on the top of the fourth clamp 342; the second linkage locking plate 341 is provided with a fourth holding member 3412, and the fourth locking disc 343 is provided with a fourth holding part 344 that cooperates with the fourth holding member 3412; the holding and separating directions of the fourth holding member 3412 and the fourth holding part 344 coincide with the axial direction of the left side of the right locking rod 326.

[0032] Specifically, the middle vertical connecting rod 602 passes through the fourth strip groove 3411. The second linkage locking plate 341 is connected to the left end of the right locking rod 326 through an adjustable mounting structure 40. The right locking rod 326 slides axially through the fourth strip groove 3411, causing the fourth holding member 3412 and the fourth holding part 344 to engage and disengage, thereby opening or closing the rotation of the middle vertical connecting rod 602 in a linkage manner.

[0033] In one embodiment, the adjustable mounting structure 40 includes a connecting flange 41 connected to the left locking rod 316 and the right locking rod 326, and a fixed flange 42 connected to the first locking plate 311, the first linkage locking plate 331, the second locking plate 321 and the second linkage locking plate 341. The fixed flange 42 and the connecting flange 41 are connected by an adjusting screw assembly 43. The adjusting screw assembly 43 includes a plurality of adjusting screws 431 arranged in a ring around the axial direction and passing through the fixed flange 42 and the connecting flange 41, and adjusting nuts 432 passing through the adjusting screws 431.

[0034] Furthermore, the adjusting screw 431 is axially inserted between the fixed flange 42 and the connecting flange 41, with one end of the adjusting screw 431 fixedly connected to the connecting flange 41 and the other end passing through the fixed flange 42 and threadedly engaged with the adjusting nut 432.

[0035] Specifically, rotating the adjusting nut 432 causes it to move axially along the adjusting screw 431, thereby pushing the fixed flange 42 to move closer to or further away from the connecting flange 41. This achieves precise adjustment of the relative positions of the first locking plate 311, the first linkage locking plate 331, the second locking plate 321, and the second linkage locking plate 341 with the corresponding left locking rod 316 and right locking rod 326.

[0036] In one embodiment, the adjustable mounting structure 40 further includes a first fixing plate 315 extending from the fixing flange 42 toward the first locking plate 311 and fixedly connected to the first locking plate 311, a second fixing plate 325 extending from the fixing flange 42 toward the second locking plate 321 and fixedly connected to the second locking plate 321, a third fixing plate 335 extending from the fixing flange 42 toward the first linkage locking plate 331 and fixedly connected to the first linkage locking plate 331, and a fourth fixing plate 345 extending from the fixing flange 42 toward the second linkage locking plate 341 and fixedly connected to the second linkage locking plate 341.

[0037] Furthermore, the first strip groove 3111, the second strip groove 3211, the third strip groove 3311 and the fourth strip groove 3411 form an opening structure (not shown) on the first locking plate 311, the first linkage locking plate 331, the second locking plate 321 and the second linkage locking plate 341 near the fixed flange 42.

[0038] Specifically, the first fixing plate 315 and the first locking plate 311 are fixedly connected to the opening structure facing the fixing flange 42 to form the first strip groove 3111; the second fixing plate 325 and the second locking plate 321 are fixedly connected to the opening structure facing the fixing flange 42 to form the second strip groove 3211; the third fixing plate 335 and the first linkage locking plate 331 are fixedly connected to the opening structure facing the fixing flange 42 to form the third strip groove 3311; and the fourth fixing plate 345 and the second linkage locking plate 341 are fixedly connected to the opening structure facing the fixing flange 42 to form the fourth strip groove 3411.

[0039] In one embodiment, the adjustable mounting structure 40 further includes four locking members 44, which are respectively locked above the first locking plate 311, the first linkage locking plate 331, the second locking plate 321, and the second linkage locking plate 341. Each locking member 44 includes two locking blocks 441, which are fixedly connected by screws 442. The opposite sides of the two locking blocks 441 form an arc surface corresponding to the size of the vertical connecting rod 600, so as to facilitate locking and limiting the vertical connecting rod 600.

[0040] Specifically, four locking components 44 are respectively locked above the first locking plate 311, the first linkage locking plate 331, the second locking plate 321 and the second linkage locking plate 341. Each locking component 44 includes two oppositely arranged locking blocks 441 and a screw 442. The arc surface of the locking block 441 corresponds to the arc surface size of the vertical connecting rod 600, and the two oppositely arranged locking blocks 441 are fixed to the vertical connecting rod 600 by the screw 442.

[0041] In one embodiment, the locking mechanism 30 further includes a left limiting component 35 provided on the left mounting plate 21 for limiting the left vertical link 601, a right limiting component 36 provided on the right mounting plate 22 for limiting the right vertical link 603, a left linkage limiting component 37 provided on the left linkage mounting plate 23 for limiting the left side of the center vertical link 602, and a right linkage limiting component 38 provided on the right linkage mounting plate 24 for limiting the right side of the center vertical link 602.

[0042] The left limiting component 35 further includes a first fixing seat 351 fixedly mounted on the left mounting plate 21 and a first limiting block 352 for supporting and limiting the left vertical connecting rod 601.

[0043] Specifically, the first limiting block 352 and the first fixed seat 351 are connected by a limiting screw assembly 39 to adjust the distance between the first fixed seat 351 and the first limiting block 352, thereby adjusting the installation distance between the first limiting block 352 and the left vertical connecting rod 601. The side of the first limiting block 352 near the left vertical connecting rod 601 has an arc surface that cooperates with the left vertical connecting rod 601 to facilitate holding and limiting the left vertical connecting rod 601.

[0044] Furthermore, the right limiting component 36 includes a second fixing seat 361 fixedly mounted on the right mounting plate 22 and a second limiting block 362 for supporting and limiting the right vertical connecting rod 603.

[0045] Specifically, the second limiting block 362 and the second fixed seat 361 are connected by a limiting screw assembly 39 to adjust the distance between the second fixed seat 361 and the second limiting block 362, thereby adjusting the installation distance between the second limiting block 362 and the right vertical connecting rod 603. The side of the second limiting block 362 near the right vertical connecting rod 603 has an arc surface that cooperates with the right vertical connecting rod 603 to facilitate holding and limiting the right vertical connecting rod 603.

[0046] Furthermore, the left linkage limiting assembly 37 includes a third fixing seat 371 fixedly mounted on the left linkage mounting plate 23 and a third limiting block 372 for supporting and limiting the vertical connecting rod 602 in the limiting position.

[0047] Specifically, the third limiting block 372 and the third fixed seat 371 are connected by a limiting screw assembly 39 to adjust the distance between the third fixed seat 371 and the third limiting block 372, thereby adjusting the installation distance between the third limiting block 372 and the middle vertical connecting rod 602. The side of the third limiting block 372 near the middle vertical connecting rod 602 has an arc surface that cooperates with the middle vertical connecting rod 602 to facilitate holding and limiting the middle vertical connecting rod 602.

[0048] Furthermore, the right linkage limiting assembly 38 includes a fourth fixing seat 381 fixedly mounted on the right linkage mounting plate 24 and a fourth limiting block 382 for further supporting and limiting the vertical connecting rod 602.

[0049] Specifically, the fourth limiting block 382 and the fourth fixed seat 381 are connected by a limiting screw assembly 39 to adjust the distance between the fourth fixed seat 381 and the fourth limiting block 382, ​​thereby adjusting the installation distance between the fourth limiting block 382 and the middle vertical connecting rod 602. The side of the fourth limiting block 382 near the middle vertical connecting rod 602 has an arc surface that cooperates with the middle vertical connecting rod 602 to facilitate further support and limit the middle vertical connecting rod 602.

[0050] In one embodiment, the limiting screw assembly 39 includes a plurality of first limiting screws 391 arranged in a ring around the axis and passing through the first limiting block 352 and the first fixed seat 351, and a first limiting nut 392 passing through the first screw 391; a plurality of second limiting screws 393 arranged in a ring around the axis and passing through the second limiting block 362 and the second fixed seat 361, and a second limiting nut 394 passing through the second screw 393; a plurality of third limiting screws 395 arranged in a ring around the axis and passing through the third limiting block 372 and the third fixed seat 371, and a third limiting nut 396 passing through the third screw 395; and a plurality of fourth limiting screws 397 arranged in a ring around the axis and passing through the fourth limiting block 382 and the fourth fixed seat 381, and a fourth limiting nut 398 passing through the fourth screw 397.

[0051] Furthermore, the first limiting screw 391 is axially inserted between the first limiting block 352 and the first fixed seat 351, and one end of the first limiting screw 391 is fixedly connected to the first limiting block 352, while the other end passes through the first fixed seat 351 and is threadedly engaged with the first limiting nut 392.

[0052] Specifically, rotating the first limiting nut 392 causes the first limiting nut 392 to move axially along the first limiting screw 391, thereby pushing the first fixed seat 351 to move closer to or further away from the first limiting block 352, thus achieving the limiting and adjustment of the left vertical connecting rod 601.

[0053] Furthermore, the second limiting screw 393 is axially inserted between the second limiting block 362 and the second fixed seat 361, and one end of the second limiting screw 393 is fixedly connected to the second limiting block 362, while the other end passes through the second fixed seat 361 and is threadedly engaged with the second limiting nut 394.

[0054] Specifically, rotating the second limiting nut 394 causes the second limiting nut 394 to move axially along the second limiting screw 393, thereby pushing the second fixed seat 361 to move closer to or further away from the second limiting block 362, thus achieving the limiting and adjustment of the right vertical connecting rod 603.

[0055] Furthermore, the third limiting screw 395 is axially inserted between the third limiting block 372 and the third fixed seat 371, and one end of the third limiting screw 395 is fixedly connected to the third limiting block 372, while the other end passes through the third fixed seat 371 and is threadedly engaged with the third limiting nut 396.

[0056] Specifically, rotating the third limiting nut 396 causes the third limiting nut 396 to move axially along the third limiting screw 395, thereby pushing the third fixed seat 371 to move closer to or further away from the third limiting block 372, thus achieving the limiting and adjustment of the centering vertical connecting rod 602.

[0057] Furthermore, the fourth limiting screw 397 is axially inserted between the fourth limiting block 382 and the fourth fixed seat 381, and one end of the fourth limiting screw 397 is fixedly connected to the fourth limiting block 382, ​​while the other end passes through the fourth fixed seat 381 and is threadedly engaged with the fourth limiting nut 398.

[0058] Specifically, rotating the fourth limiting nut 398 causes the fourth limiting nut 398 to move axially along the fourth limiting screw 397, thereby pushing the fourth fixed seat 381 to move closer to or further away from the fourth limiting block 382, ​​thus achieving the limiting and adjustment of the centering vertical connecting rod 602.

[0059] In one embodiment, a first vertical plate 212 extends downward from the right end of the left mounting plate 21 toward the left locking rod 316. A first support member 213 is connected to the first vertical plate 212. The first vertical plate 212 is provided with a first U-shaped groove 215 with its opening facing downward. The first support member 213 is provided with a first connecting groove 216 with its opening facing upward. The first U-shaped groove 215 is connected to the first connecting groove 216, so that the first U-shaped groove 215 and the first connecting groove 216 define a first through hole 217 through which the left locking rod 316 passes.

[0060] The first bearing member 213 is equipped with a first rolling member 214 that can rotate along its own axis. The rotation axis of the first rolling member 214 is perpendicular to the length direction of the left locking rod 316. The first rolling member 214 is used to contact and support the left end of the left locking rod 316.

[0061] Furthermore, a second vertical plate 222 extends downward from the left end of the right mounting plate 22 toward the right locking rod 326. A second support member 223 is connected to the second vertical plate 222. A second U-shaped groove 225 with its opening facing downward is provided on the second vertical plate 222. A second connecting groove 226 with its opening facing upward is provided on the second support member 223. The second U-shaped groove 225 is connected to the second connecting groove 226, so that the second U-shaped groove 225 and the second connecting groove 226 define a second through hole 227 through which the right locking rod 326 passes.

[0062] The second bearing member 223 is equipped with a second rolling member 224 that can rotate along its own axis. The rotation axis of the second rolling member 224 is perpendicular to the length direction of the right locking rod 326. The second rolling member 224 is used to contact and support the right end of the right locking rod 326.

[0063] Furthermore, a third vertical plate 232 extends downward from the left end of the left linkage mounting plate 23 toward the left locking rod 316. A third bearing member 233 is connected to the third vertical plate 232. The third vertical plate 233 is provided with a third U-shaped groove 235 with its opening facing downward. The third bearing member 233 is provided with a third connecting groove 236 with its opening facing upward. The third U-shaped groove 235 is connected to the third connecting groove 236, so that the third U-shaped groove 235 and the third connecting groove 236 define a third through hole 237 for the left locking rod 316 to pass through.

[0064] The third bearing member 233 is equipped with a third rolling member 234 that can rotate along its own axis. The rotation axis of the third rolling member 234 is perpendicular to the length direction of the left locking rod 316. The third rolling member 234 is used to contact and support the right end of the left locking rod 316.

[0065] Furthermore, a fourth vertical plate 242 extends downward from the right end of the right linkage mounting plate 24 toward the right locking rod 326. A fourth bearing member 243 is connected to the fourth vertical plate 242. The fourth vertical plate 242 is provided with a fourth U-shaped groove 245 with its opening facing downward. The fourth bearing member 243 is provided with a fourth connecting groove 246 with its opening facing upward. The fourth U-shaped groove 245 is connected to the fourth connecting groove 246, so that the fourth U-shaped groove 245 and the fourth connecting groove 246 define a fourth through hole 247 for the right locking rod 326 to pass through.

[0066] The fourth bearing member 243 is equipped with a fourth rolling member 244 that can rotate along its own axis. The rotation axis of the fourth rolling member 244 is perpendicular to the length direction of the right locking rod 326. The fourth rolling member 244 is used to contact and support the left end of the right locking rod 326.

[0067] In one embodiment, the left locking mounting bracket 11 extends a first support base 111 toward the left mounting plate 21. The first support base 111 is provided with a plurality of first adjustment holes (not shown in the figure), and the left mounting plate 21 is provided with first fixing holes (not shown in the figure) that match the first adjustment holes.

[0068] Specifically, the first adjusting member 211 passes through the first fixing hole and is fixed inside the first adjusting hole to adjust and fix the position of the left mounting plate 21 on the first support 111.

[0069] Furthermore, the right locking mounting bracket 12 extends a second support base 121 towards the right mounting plate 22. The second support base 121 is provided with a plurality of second adjustment holes (not shown in the figure), and the right mounting plate 22 is provided with second fixing holes (not shown in the figure) that match the second adjustment holes.

[0070] Specifically, the second adjusting member 221 passes through the second fixing hole and is fixed inside the second adjusting hole to adjust and fix the position of the right mounting plate 22 on the second support 121.

[0071] Furthermore, the central locking mounting bracket 13 extends into a third support seat 131 and a fourth support seat 132 in the direction of the left linkage mounting plate 23 and the right linkage mounting plate 24.

[0072] The third support 131 has several third adjustment holes (not shown in the figure), the left linkage mounting plate 23 has a third fixing hole (not shown in the figure) that matches the third adjustment holes, the fourth support 132 has several fourth adjustment holes (not shown in the figure), and the right linkage mounting plate 24 has a fourth fixing hole (not shown in the figure) that matches the fourth adjustment holes.

[0073] Specifically, the third adjusting member 231 passes through the third fixing hole and is fixed inside the third adjusting hole to adjust and fix the position of the left linkage mounting plate 23 on the third support base 131; the fourth adjusting member 241 passes through the fourth fixing hole and is fixed inside the fourth adjusting hole to adjust and fix the position of the right linkage mounting plate 24 on the fourth support base 132.

[0074] In summary, compared with the prior art, the present invention has at least the following technical effects: 1. By directly installing the locking device 100 on the interlocking bracket 700 of each switch post 200, the height of installation and maintenance is reduced and the operational safety is improved.

[0075] 2. The left locking rod 316 of the left locking assembly 31 provided by the present invention has its left end passing through the first through hole 217 on the left mounting plate 21 and its right end passing through the third through hole 237 on the left linkage mounting plate 23. The right locking rod 326 of the right locking assembly 32 has its left end passing through the second through hole 227 on the right mounting plate 22 and its right end passing through the fourth through hole 247 on the right linkage mounting plate 24. It is connected to the locking mechanism 30 through the adjustable mounting structure 40, thereby realizing the axial linkage limit of the left vertical connecting rod 601, the middle vertical connecting rod 602 and the right vertical connecting rod 603 on the three sets of switch columns 200: the left switch column 201, the middle switch column 202 and the right switch column 203.

[0076] 3. The present invention has a compact structure, direct transmission, low installation and maintenance difficulty, and high safety. It can effectively ensure the reliable locking of each switch column 200 after the closing or opening action is completed, avoid misoperation, and effectively improve the overall operational reliability of the three-column horizontal rotary high-voltage disconnect switch 1000.

[0077] 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 locking device for a three-column horizontal rotary high-voltage disconnector, the high-voltage disconnector comprising three sets of switch columns: a left switch column with a left stationary contact, a middle switch column with a conductive rod, and a right switch column with a right stationary contact, and a locking device; each set of switch columns includes a vertical connecting rod and a latching bracket, the vertical connecting rod being mounted on the side of the latching bracket; the conductive rod on the middle switch column rotates, and both ends of the conductive rod respectively perform closing or opening actions with the left stationary contact and the right stationary contact; when the closing or opening action is completed, the locking device axially limits the vertical connecting rods on the three sets of switch columns; characterized in that... The locking device includes a mounting bracket and a locking mechanism; wherein... The mounting bracket includes a left locking mounting bracket fixedly mounted on the left partition bracket of the left switch column and a left mounting plate mounted on the left locking mounting bracket; a middle locking mounting bracket fixedly mounted on the middle partition bracket of the middle switch column and a left linkage mounting plate and a right linkage mounting plate mounted on the middle locking mounting bracket; a right locking mounting bracket fixedly mounted on the right partition bracket of the right switch column and a right mounting plate mounted on the right locking mounting bracket; and through holes are provided on the left mounting plate, the left linkage mounting plate, the right linkage mounting plate, and the right mounting plate. The locking mechanism includes a left locking assembly and a left locking rod disposed on the left vertical link of the left switch post, a left linkage locking assembly and a right linkage locking assembly disposed on the middle vertical link of the middle switch post, and a right locking assembly and a right locking rod disposed on the right vertical link of the right switch post. The left locking rod is horizontally positioned and passes through the through holes in the left mounting plate and the left linkage mounting plate. The two ends of the left locking rod are respectively connected to the left locking assembly and the left linkage locking assembly through adjustable mounting structures. The left locking rod moves along its axial direction to open or close the left locking assembly and the left linkage locking assembly in a coordinated manner. The right locking rod is horizontally positioned and passes through the through holes on the right mounting plate and the right linkage mounting plate. The two ends of the right locking rod are respectively connected to the right locking assembly and the right linkage locking assembly through adjustable mounting structures. The right locking assembly and the right linkage locking assembly are opened or closed in linkage by the movement of the right locking rod along its axial direction.

2. The interlocking device for the three-column horizontal rotary high-voltage disconnector according to claim 1, characterized in that, The left locking assembly includes a first locking plate having a first strip groove extending axially along the left locking rod, a first clamp fixed to the left vertical connecting rod, and a first locking disc fixed to the top of the first clamp. The first locking plate is provided with a first retaining member, and the first locking disc is provided with a first retaining part that cooperates with the first retaining member. The retaining and separating directions of the first retaining member and the first retaining part coincide with the axial direction of the left locking rod. The left vertical connecting rod passes through the first strip groove. The first locking plate and the left end of the left locking rod are connected through the adjustable mounting structure. The left locking rod slides axially through the first strip groove, causing the first clamping member and the first clamping part to clamp and separate, thereby opening or closing the rotation of the left vertical connecting rod in linkage. The right locking assembly includes a second locking plate having a second slot extending axially along the right locking rod, a second clamp fixed to the right vertical connecting rod, and a second locking disc fixed to the top of the second clamp. The second locking plate is provided with a second locking member, and the second locking disc is provided with a second locking part that cooperates with the second locking member. The locking and disengaging directions of the second locking member and the second locking part coincide with the axial direction of the right locking rod. The right vertical connecting rod passes through the second slot. The second locking plate is connected to the left end of the right locking rod through the adjustable mounting structure. The right locking rod slides axially through the second slot, causing the second clamping member and the second clamping part to clamp and separate, thereby opening or closing the rotation of the right vertical connecting rod in a linkage. The left linkage locking assembly includes a first linkage locking plate having a third strip-shaped groove extending axially along the right side of the left locking rod, a third clamp fixed on the middle vertical connecting rod, and a third locking disc fixed on the top of the third clamp. The first linkage lock plate is provided with a third holding member, and the third lock disc is provided with a third holding part that cooperates with the third holding member. The holding and separating directions of the third holding member and the third holding part coincide with the axial direction of the right side of the left locking rod. The middle vertical connecting rod passes through the third strip groove. The first linkage locking plate is connected to the right end of the left locking rod through the adjustable mounting structure. The left locking rod slides axially through the third strip groove, causing the third clamping member and the third clamping part to clamp and separate, thereby linkage opening or closing the rotation of the middle vertical connecting rod. The right linkage locking assembly includes a second linkage locking plate having a fourth strip-shaped groove extending axially along the left side of the right locking rod, a fourth clamp fixed on the middle vertical connecting rod, and a fourth locking disc fixed on the top of the fourth clamp. The second linkage lock plate is provided with a fourth holding member, and the fourth lock disc is provided with a fourth holding part that cooperates with the fourth holding member. The holding and separating directions of the fourth holding member and the fourth holding part coincide with the axial direction of the left side of the right locking rod. The middle vertical connecting rod passes through the fourth slot. The second linkage locking plate is connected to the left end of the right locking rod through the adjustable mounting structure. The right locking rod slides axially through the fourth slot, causing the fourth locking member and the fourth locking part to lock and separate, thereby opening or closing the rotation of the middle vertical connecting rod in a linkage manner.

3. The interlocking device for the three-column horizontal rotary high-voltage disconnector according to claim 2, characterized in that, The adjustable mounting structure includes a connecting flange connected to the left locking rod and the right locking rod, and a fixed flange connected to the first locking plate, the first linkage locking plate, the second locking plate and the second linkage locking plate. The fixed flange and the connecting flange are connected by an adjusting screw assembly.

4. The interlocking device for the three-column horizontal rotary high-voltage disconnector according to claim 3, characterized in that, The adjusting screw assembly includes several adjusting screws arranged in a ring around the axis and passing through the fixed flange and the connecting flange, and adjusting nuts passing through the adjusting screws. The adjusting screw is axially inserted between the fixed flange and the connecting flange, with one end of the adjusting screw fixedly connected to the connecting flange and the other end passing through the fixed flange and threadedly engaged with the adjusting nut. Rotating the adjusting nut causes it to move axially along the adjusting screw, thereby pushing the fixed flange to move closer to or further away from the connecting flange, thus achieving precise adjustment of the relative positions between the first locking plate, the first linkage locking plate, the second locking plate, and the second linkage locking plate and the corresponding left locking rod and right locking rod.

5. The interlocking device for the three-column horizontal rotary high-voltage disconnector according to claim 4, characterized in that, The adjustable mounting structure further includes a first fixing plate extending from the fixed flange toward the first locking plate and fixedly connected to the first locking plate, a second fixing plate extending from the fixed flange toward the second locking plate and fixedly connected to the second locking plate, a third fixing plate extending from the fixed flange toward the first linkage locking plate and fixedly connected to the first linkage locking plate, and a fourth fixing plate extending from the fixed flange toward the second linkage locking plate and fixedly connected to the second linkage locking plate. The first strip groove, the second strip groove, the third strip groove, and the fourth strip groove form an opening structure at one end of the first locking plate, the first linkage locking plate, the second locking plate, and the second linkage locking plate near the fixed flange. The first fixing plate and the first locking plate are fixedly connected to the opening structure facing the fixing flange to cooperate in forming the first strip groove; The second fixing plate and the second locking plate are fixedly connected to the opening structure facing the fixing flange to form the second strip groove; The third fixing plate is fixedly connected to the opening structure of the first linkage locking plate facing the fixing flange to form the third strip groove; The fourth fixing plate is fixedly connected to the opening structure of the second linkage locking plate facing the fixing flange to form the fourth strip groove.

6. The interlocking device for the three-column horizontal rotary high-voltage disconnector according to claim 5, characterized in that, The adjustable mounting structure also includes four locking components, which are respectively locked above the first locking plate, the first linkage locking plate, the second locking plate, and the second linkage locking plate. The locking component includes two locking blocks, which are fixedly connected by a screw. The opposite sides of the two locking blocks form an arc surface corresponding to the size of the vertical connecting rod.

7. The interlocking device for the three-column horizontal rotary high-voltage disconnector according to claim 4, characterized in that, The locking mechanism further includes a left limiting component on the left mounting plate for limiting the left vertical link, a right limiting component on the right mounting plate for limiting the right vertical link, a left linkage limiting component on the left linkage mounting plate for limiting the left side of the middle vertical link, and a right linkage limiting component on the right linkage mounting plate for limiting the right side of the middle vertical link.

8. The interlocking device for the three-column horizontal rotary high-voltage disconnector according to claim 7, characterized in that, The left limiting component includes a first fixed seat fixedly mounted on the left mounting plate and a first limiting block for supporting and limiting the left vertical connecting rod. The first limiting block is connected to the first fixed seat through a limiting screw assembly to adjust the distance between the first fixed seat and the first limiting block, thereby adjusting the installation distance between the first limiting block and the left vertical connecting rod. The side of the first limiting block near the left vertical connecting rod has an arc surface that cooperates with the left vertical connecting rod. The right limiting component includes a second fixed seat fixedly mounted on the right mounting plate and a second limiting block for supporting and limiting the right vertical connecting rod. The second limiting block is connected to the second fixed seat through a limiting screw assembly to adjust the distance between the second fixed seat and the second limiting block, thereby adjusting the installation distance between the second limiting block and the right vertical connecting rod. The side of the second limiting block near the right vertical connecting rod has an arc surface that cooperates with the right vertical connecting rod. The left linkage limiting assembly includes a third fixed seat fixedly mounted on the left linkage mounting plate and a third limiting block for supporting and limiting the middle vertical connecting rod. The third limiting block and the third fixed seat are connected by a limiting screw assembly to adjust the distance between the third fixed seat and the third limiting block, thereby adjusting the installation distance between the third limiting block and the middle vertical connecting rod. The side of the third limiting block near the middle vertical connecting rod has an arc surface that cooperates with the middle vertical connecting rod. The right linkage limiting assembly includes a fourth fixed seat fixedly mounted on the right linkage mounting plate and a fourth limiting block for further supporting and limiting the middle vertical connecting rod. The fourth limiting block and the fourth fixed seat are connected by a limiting screw assembly to adjust the distance between the fourth fixed seat and the fourth limiting block, thereby adjusting the installation distance between the fourth limiting block and the middle vertical connecting rod. The side of the fourth limiting block near the middle vertical connecting rod has an arc surface that cooperates with the middle vertical connecting rod. The limiting screw assembly includes several first limiting screws arranged in a ring around the axis and passing through the first limiting block and the first fixed seat, and first limiting nuts passing through the first limiting screws; several second limiting screws arranged in a ring around the axis and passing through the second limiting block and the second fixed seat, and second limiting nuts passing through the second limiting screws; several third limiting screws arranged in a ring around the axis and passing through the third limiting block and the third fixed seat, and third limiting nuts passing through the third limiting screws; and several fourth limiting screws arranged in a ring around the axis and passing through the fourth limiting block and the fourth fixed seat, and fourth limiting nuts passing through the fourth limiting screws. The first limiting screw is axially inserted between the first limiting block and the first fixed seat, and one end of the first limiting screw is fixedly connected to the first limiting block, while the other end passes through the first fixed seat and is threadedly engaged with the first limiting nut. Rotating the first limiting nut causes it to move axially along the first limiting screw, thereby pushing the first fixed seat to move closer to or further away from the first limiting block, thus achieving the limiting and adjustment of the left vertical connecting rod. The second limiting screw is axially inserted between the second limiting block and the second fixed seat, and one end of the second limiting screw is fixedly connected to the second limiting block, while the other end passes through the second fixed seat and is threadedly engaged with the second limiting nut. Rotating the second limiting nut causes it to move axially along the second limiting screw, thereby pushing the second fixed seat to move closer to or further away from the second limiting block, thus achieving the limiting and adjustment of the right vertical connecting rod. The third limiting screw is axially inserted between the third limiting block and the third fixed seat, and one end of the third limiting screw is fixedly connected to the third limiting block, while the other end passes through the third fixed seat and is threadedly engaged with the third limiting nut. Rotating the third limiting nut causes it to move axially along the third limiting screw, thereby pushing the third fixed seat to move closer to or further away from the third limiting block, thus achieving the limiting and adjustment of the middle vertical connecting rod. The fourth limiting screw is axially inserted between the fourth limiting block and the fourth fixed seat, and one end of the fourth limiting screw is fixedly connected to the fourth limiting block, while the other end passes through the fourth fixed seat and is threadedly engaged with the fourth limiting nut. Rotating the fourth limiting nut causes it to move axially along the fourth limiting screw, thereby pushing the fourth fixed seat to move closer to or further away from the fourth limiting block, thus achieving the limiting and adjustment of the middle vertical connecting rod.

9. The interlocking device for the three-column horizontal rotary high-voltage disconnector according to claim 8, characterized in that, A first vertical plate extends downward toward the left locking rod from the right end of the left mounting plate, and a first bearing member is connected to the first vertical plate; The first vertical plate is provided with a first U-shaped groove with the opening facing downwards, and the first bearing member is provided with a first connecting groove with the opening facing upwards; The first U-shaped groove is connected to the first connecting groove such that the first U-shaped groove and the first connecting groove define a first through hole for the left locking rod to pass through; The first bearing member is equipped with a first rolling element that can rotate along its own axis. The rotation axis of the first rolling element is perpendicular to the length direction of the left locking rod. The first rolling element is used to contact and support the left end of the left locking rod. A second vertical plate extends downward from the left end of the right mounting plate toward the right locking rod, and a second bearing member is connected to the second vertical plate; The second vertical plate is provided with a second U-shaped groove with the opening facing downwards, and the second bearing member is provided with a second connecting groove with the opening facing upwards; The second U-shaped groove is connected to the second connecting groove such that the second U-shaped groove and the second connecting groove define a second through hole for the right locking rod to pass through; The second bearing member is equipped with a second rolling element that can rotate along its own axis. The rotation axis of the second rolling element is perpendicular to the length direction of the right locking rod. The second rolling element is used to contact and support the right end of the right locking rod. A third vertical plate extends downward from the left end of the left linkage mounting plate toward the left locking rod, and a third bearing member is connected to the third vertical plate; The third vertical plate is provided with a third U-shaped groove with the opening facing downwards, and the third bearing member is provided with a third connecting groove with the opening facing upwards. The third U-shaped groove is connected to the third connecting groove such that the third U-shaped groove and the third connecting groove define a third through hole for the left locking rod to pass through; The third bearing member is equipped with a third rolling member that can rotate along its own axis. The rotation axis of the third rolling member is perpendicular to the length direction of the left locking rod. The third rolling member is used to contact and support the right end of the left locking rod. A fourth vertical plate extends downward toward the right locking rod from the right end of the right linkage mounting plate, and a fourth bearing member is connected to the fourth vertical plate. The fourth vertical plate is provided with a fourth U-shaped groove with the opening facing downwards, and the fourth bearing member is provided with a fourth connecting groove with the opening facing upwards. The fourth U-shaped groove is connected to the fourth connecting groove so that the fourth U-shaped groove and the fourth connecting groove define a fourth through hole for the right locking rod to pass through. The fourth bearing member is equipped with a fourth rolling element that can rotate along its own axis. The rotation axis of the fourth rolling element is perpendicular to the length direction of the right locking rod. The fourth rolling element is used to contact and support the left end of the right locking rod.

10. The interlocking device for the three-column horizontal rotary high-voltage disconnector according to claim 1, characterized in that, The left locking mounting bracket extends a first support seat toward the left mounting plate; The first support base is provided with a plurality of first adjustment holes, and the left mounting plate is provided with first fixing holes that match the first adjustment holes. The first adjustment member passes through the first fixing hole and is fixed in the first adjustment hole to adjust and fix the position of the left mounting plate on the first support base. The right locking mounting bracket extends a second support seat toward the right mounting plate; The second support base is provided with a plurality of second adjustment holes, and the right mounting plate is provided with a second fixing hole that matches the second adjustment holes. The second adjustment member passes through the second fixing hole and is fixed in the second adjustment hole to adjust and fix the position of the right mounting plate on the second support base. The central locking mounting bracket extends a third support seat and a fourth support seat toward the left linkage mounting plate and the right linkage mounting plate; The third support base is provided with a plurality of third adjustment holes, and the left linkage mounting plate is provided with a third fixing hole that matches the third adjustment holes. The third adjustment member passes through the third fixing hole and is fixed in the third adjustment hole to adjust and fix the position of the left linkage mounting plate on the second support base. The fourth support base is provided with a plurality of fourth adjustment holes, and the right linkage mounting plate is provided with a fourth fixing hole that matches the fourth adjustment holes. The fourth adjustment member passes through the fourth fixing hole and is fixed in the fourth adjustment hole to adjust and fix the position of the right linkage mounting plate on the fourth support base.

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