A complete outdoor pole-mounted vacuum circuit breaker with permanent magnet operating mechanism

Abstract

This invention discloses a complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism, relating to the field of vacuum circuit breakers. It includes a housing and poles mounted on the top of the housing. Two vertical plates are fixed to both ends of the housing with screws. Each vertical plate has an integrally formed T-shaped slide rail, and a placement component is slidably mounted on each T-shaped slide rail. Hexagonal bolts for fixing the housing are placed inside the placement components. Protective boxes can be detachably installed on the outer wall of the housing at the placement components. Both protective boxes contain driving components that drive the hexagonal bolts to rotate and simultaneously move the placement components down along the T-shaped slide rails, achieving the tightening and locking of the hexagonal bolts and nuts. This invention relies on mechanical linkage to achieve synchronous and uniform tightening of the bolts on both sides of the vacuum circuit breaker, eliminating problems such as equipment installation misalignment and uneven force, and improving the installation efficiency and assembly quality of outdoor pole-mounted vacuum circuit breakers.

Description

Technical Field

[0001] This invention relates to the technical field of vacuum circuit breakers, specifically a complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism. Background Technology

[0002] Vacuum circuit breakers are high-voltage switchgear that uses high vacuum as the arc extinguishing and insulation medium. They have advantages such as small size, long life and maintenance-free operation, and are widely used in the protection and control of power systems. Permanent magnet driven vacuum circuit breakers replace traditional spring or electromagnetic mechanisms with permanent magnet operating mechanisms. They use the holding force provided by permanent magnets to complete the opening and closing operations, combining the high efficiency of vacuum arc extinguishing technology with the reliability of permanent magnet mechanisms.

[0003] An existing outdoor pole-mounted vacuum circuit breaker includes a housing, three identical solid-sealed poles mounted on the housing, a first power-taking pole mounted on the housing, and a first power supply mounted inside the housing. The solid-sealed poles contain an integrated current sensor and a voltage divider sensor. The voltage divider sensor is connected to the moving or stationary conductive rod of the vacuum interrupter chamber of the solid-sealed pole, and the integrated current sensor is connected to the moving conductive rod of the vacuum interrupter chamber of the solid-sealed pole. The upper end of the first power-taking pole is connected to the input terminal of one of the solid-sealed poles, and the lower end of the first power-taking pole is connected to the first power supply, which is an isolated power supply.

[0004] While the aforementioned technologies achieve the requirements of power supply stability, ease of installation, power safety, and voltage sampling accuracy during power extraction, the entire equipment relies on manual tightening of installation bolts at height for fixation. This high-altitude operation is risky and has low installation efficiency. Uneven tightening force can easily cause the vacuum circuit breaker to tilt or shift under force, which can interfere with the transmission and coordination accuracy of the permanent magnet operating mechanism inside the enclosure and affect the stability of the opening and closing actions. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a complete set of outdoor pole-mounted vacuum circuit breakers with permanent magnet operating mechanism to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism includes a housing and a pole post set on the top of the housing. The housing is equipped with a permanent magnet operating mechanism. Two vertical plates are fixed to the left and right ends of the housing by screws. Each vertical plate is integrally provided with a T-shaped slide rail. Each T-shaped slide rail is slidably equipped with a placement component. Hexagonal bolts for fixing the housing are placed in the placement component. Base plates are fixed to the bottom of the left and right ends of the housing. Locking blocks for placing nuts are symmetrically fixed on the two base plates. Side plates are integrally provided on both side walls of the housing. Fixing holes for the hexagonal bolts to pass through and descend are symmetrically opened on the two side plates. The outer wall of the housing can be detachably fitted with a protective box at the placement component. Both protective boxes are equipped with a drive component, which is in transmission cooperation with the placement component. The drive component is used to drive the hexagonal bolt to rotate and simultaneously drive the placement component to move down along the T-shaped slide rail, so as to realize the tightening and locking of the hexagonal bolt and nut. Both sides of the housing are equipped with auxiliary positioning tubes that have both positioning and heat dissipation functions.

[0007] Specifically, each of the placement components includes a movable block, which is slidably mounted on a T-shaped slide rail. A cavity is formed inside the movable block, and a rotating plate is rotatably installed in the cavity. A hexagonal placement groove matching the hexagonal bolt head is formed in the middle of the rotating plate. A worm gear is fixedly sleeved on the outer wall of the rotating plate, and a groove adapted to the worm gear is formed in the cavity wall.

[0008] Specifically, the movable block has a communicating drive cavity on one side of the chamber. The drive cavity contains a worm gear, which meshes with a worm wheel for transmission. Both ends of the worm gear are fixed with shafts. One end of each shaft extends out of the drive cavity and is fixedly connected to a sleeve block. The sleeve blocks arranged opposite each other on the left and right are connected by a connecting rod. The two ends of the connecting rod are fixedly connected to the corresponding sleeve blocks.

[0009] Specifically, in this technical solution, a top plate is fixed to the top of the vertical plate, and springs are symmetrically arranged between the top plate and the upper surface of the movable block. The two ends of the two springs are respectively fixedly connected to the lower surface of the top plate and the upper surface of the movable block.

[0010] Specifically, in this technical solution, the upper surface of the movable block is provided with an opening and closing groove that communicates with the chamber, and a sliding cover is slidably installed in the opening and closing groove, with the lower surface of the sliding cover in contact with the upper surface of the rotating plate.

[0011] Specifically, in this technical solution, positioning rods are fixed to the outer wall of one side of the two protective boxes facing the box body. Both positioning rods are inserted and cooperate with the corresponding auxiliary positioning tubes. The two protective boxes are fixedly connected by a connecting plate.

[0012] Specifically, in this technical solution, two snap-fit ​​plates are fixed to the outer wall of the box. The distance between the two snap-fit ​​plates is adapted to the height of the connecting plate. Multiple anti-detachment snap-fit ​​plates are provided between the two snap-fit ​​plates. Grooves adapted to the anti-detachment snap-fit ​​plates are opened on both snap-fit ​​plates. The top two sides of the multiple anti-detachment snap-fit ​​plates are rotatably connected to the groove wall of the groove through rods. Coaxial screw holes for screw fixing are opened in the middle of the multiple anti-detachment snap-fit ​​plates and at corresponding positions on the connecting plate.

[0013] Specifically, the driving component includes a lifting plate, the outer wall of which slides in contact with the inner wall of the protective box, and mounting plates are fixed on both sides of the upper surface of the lifting plate. A drive motor is installed between the two mounting plates by screws. The output end of the drive motor passes through a mounting plate and is fixed with a transmission shaft. A vertical strip-shaped slot is opened on the side of the protective box near the placement component, and a plug-in block is fixed through the strip-shaped slot at the end of the transmission shaft.

[0014] Specifically, in this technical solution, the end of the sleeve block near the protective box in the placement assembly is provided with a plug-in groove, the plug-in groove matches the plug-in block, and an electric telescopic cylinder is provided on the upper surface of the lifting plate on the side of the drive motor. The fixed end of the electric telescopic cylinder is connected to the inner top wall of the protective box with screws, and the telescopic end of the electric telescopic cylinder is connected to the upper surface of the lifting plate with screws.

[0015] Specifically, in this technical solution, both ends of the two auxiliary positioning tubes are sealed to the penetration box, and both auxiliary positioning tubes are made of heat-absorbing material.

[0016] In summary, the present invention has the following advantages: through the mechanical cooperation of the detachable drive component and the double-sided linkage placement component, the synchronous linkage of the rotation and tightening of the hexagonal bolts and the vertical downward feeding is realized. The mechanical linkage ensures that the bolts on both sides of the vacuum circuit breaker are locked synchronously and evenly, eliminating the problems of equipment installation deviation and uneven force, effectively protecting the assembly accuracy of the permanent magnet operating mechanism and vacuum interrupter inside the box, ensuring the stability and accuracy of the opening and closing action of the vacuum circuit breaker, and greatly improving the installation efficiency and assembly quality of the outdoor pole-mounted vacuum circuit breaker. The drive assembly can be removed from the vacuum circuit breaker enclosure after installation, effectively preventing precision electrical components such as motors and electric telescopic cylinders from aging and damage due to long-term exposure to outdoor sun, rain, and wind and sand erosion. This reduces the probability of equipment failure and subsequent maintenance costs. At the same time, a single drive assembly can be repeatedly adapted to multiple vacuum circuit breakers for installation and use, reducing the equipment matching investment for batch construction. Furthermore, the auxiliary positioning tube not only plays a precise positioning role during the assembly of the protective box, but also continuously absorbs the heat generated by the permanent magnet operating mechanism inside the box by relying on its own heat-absorbing material. The natural air convection heat exchange is formed by the through structure at both ends of the tube, which passively removes the heat accumulated inside the box. This effectively improves the defect of poor heat dissipation in the sealed box, slows down the high-temperature demagnetization rate of the permanent magnet and the aging speed of the internal mechanical and electrical components, and improves the reliability and service life of the vacuum circuit breaker during long-term outdoor operation. Attached Figure Description

[0017] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the box body and bottom plate structure of the present invention; Figure 4 This is a side view of the docking of the placement component and the driving component of the present invention; Figure 5 For the present invention Figure 4 Enlarged view at point B in the middle; Figure 6 This is a cross-sectional view of the movable block and a schematic diagram of the protective box of the present invention; Figure 7 This is a cross-sectional view of the protective box and a schematic diagram of the internal drive components of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Housing; 101. Pole post; 102. Snap-fit ​​plate; 1021. Groove; 103. Anti-detachment snap-fit ​​plate; 104. Auxiliary positioning tube; 105. Side plate; 1051. Fixing hole; 2. Base plate; 201. Locking block; 202. Nut; 3. Vertical plate; 301. T-shaped slide rail; 302. Top plate; 4. Placement assembly; 401. Movable block; 4011. Chamber; 402. Rotating plate; 4021. Hexagonal placement slot; 4022. Worm gear; 403. Drive chamber; 404, worm gear; 4041, shaft; 405, sleeve block; 4051, insertion slot; 406, connecting rod; 407, spring; 408, opening and closing through slot; 409, sliding cover; 5, protective box; 501, strip through slot; 502, positioning rod; 503, connecting plate; 6, drive assembly; 601, lifting plate; 602, mounting plate; 603, drive motor; 6031, transmission shaft; 6032, insertion block; 604, electric telescopic cylinder; 7, hexagonal bolt. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The embodiments of the present invention will now be described.

[0021] In this embodiment, please refer to Figure 1 - Figure 7 As shown, a complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism includes a housing 1 and a pole post 101 set on the top of the housing 1. The housing 1 is equipped with an existing mature permanent magnet operating mechanism and a vacuum interrupter, which constitute the core switching and breaking execution structure of the vacuum circuit breaker. The housing 1 is equipped with a permanent magnet operating mechanism. Two vertical plates 3 are fixed to the left and right ends of the housing 1 by screws. Each vertical plate 3 is integrally provided with a T-shaped slide rail 301. Each T-shaped slide rail 301 is slidably equipped with a placement component 4. Hexagonal bolts 7 for fixing the housing 1 are placed in the placement component 4. The bottom of both the left and right ends of the box 1 is fixed with a base plate 2. On the two base plates 2, there are locking blocks 201 for placing nuts 202. The upper surface of the locking block 201 is provided with a limit slot. The nut 202 is placed in the limit slot and is limited and fixed by the locking block 201, so it cannot rotate circumferentially. The two side walls of the box 1 are integrally provided with side plates 105. On the two side plates 105, there are symmetrical fixing holes 1051 for hexagonal bolts 7 to pass through and descend. The outer wall of the housing 1 is detachably equipped with a protective box 5 at the placement component 4. The outer wall of the two protective boxes 5 facing the housing 1 is fixed with a positioning rod 502. Both protective boxes 5 are equipped with a drive component 6. The drive component 6 is in transmission cooperation with the placement component 4. The drive component 6 is used to drive the hexagonal bolt 7 to rotate and simultaneously drive the placement component 4 to move down along the T-shaped slide rail 301, so as to realize the tightening and locking of the hexagonal bolt 7 and the nut 202. Both sides of the housing 1 are equipped with auxiliary positioning tubes 104 that have both positioning and heat dissipation functions. The two positioning rods 502 are inserted into the corresponding auxiliary positioning tubes 104 to realize the rapid positioning and pre-positioning of the protective box 5. Each placement component 4 includes a movable block 401, which is slidably mounted on a T-shaped slide rail 301 and can slide stably vertically along the T-shaped slide rail 301. A chamber 4011 is formed inside the movable block 401, and a rotating plate 402 is rotatably mounted in the chamber 4011. A hexagonal placement groove 4021 matching the head of a hexagonal bolt 7 is formed in the center of the rotating plate 402, which can circumferentially limit the head of the hexagonal bolt 7, so that the rotation of the rotating plate 402 can synchronously drive the hexagonal bolt 7 to rotate. A worm gear 4022 is fixedly sleeved on the outer wall of the rotating plate 402. The cavity wall of the chamber 4011 has a groove adapted to the worm gear 4022 to ensure that the worm gear 4022 rotates without jamming. The movable block 401 is located inside the chamber 4011. 11 has a communicating drive cavity 403 on one side, and a worm 404 is provided in the drive cavity 403. The worm 404 meshes with the worm wheel 4022 to form a worm wheel and worm gear reduction transmission structure, which can stably output torque to drive the rotating plate 402 to rotate. Both ends of the worm 404 are fixed with shafts 4041. One end of the two shafts 4041 extends out of the drive cavity 403 and is fixedly connected to a sleeve block 405. The sleeve blocks 405 arranged on the left and right are connected by a connecting rod 406. The two ends of the connecting rod 406 are fixedly connected to the corresponding sleeve block 405. Through the rigid linkage of the connecting rod 406, the two worms 404 on the same side can rotate synchronously, ensuring that the rotation of the hexagonal bolts 7 on both sides is completely synchronized. A top plate 302 is fixed to the top of the vertical plate 3. Springs 407 are symmetrically arranged between the top plate 302 and the upper surface of the movable block 401. The two ends of the two springs 407 are fixedly connected to the lower surface of the top plate 302 and the upper surface of the movable block 401, respectively. Under normal conditions (without hexagonal bolts 7), the equipment is in a preset slightly compressed state. The movable block 401 is stably stopped at the initial position at the bottom of the T-shaped slide rail 301 by relying on the initial elastic force. When hexagonal bolts 7 are placed in the movable block 401, the movable block 401 can be moved upward to compress the springs 407, making space to facilitate the alignment of the hexagonal bolts 7 with the fixing holes 1051 on the side plate 105, the reserved holes for the column mounting bracket, and the nut 202 at the bottom plate 2. After placement, the movable block 401 is released, and the spring 407 rebounds to release part of the elastic force, pushing the movable block 401 down so that the bottom of the hexagonal bolt 7 initially abuts against the upper end of the fixing hole 1051, which facilitates subsequent screwing in. The upper surface of the movable block 401 is provided with an opening and closing groove 408 that communicates with the chamber 4011. A sliding cover 409 is slidably installed in the opening and closing groove 408. The lower surface of the sliding cover 409 contacts the upper surface of the rotating plate 402. The sliding cover 409 can slide open and close along the opening and closing groove 408. When the sliding cover 409 is closed, its bottom surface is in contact with the upper surface of the rotating plate 402, which can vertically limit and lock the hexagonal bolt 7 placed inside the hexagonal placement groove 4021 to prevent the hexagonal bolt 7 from coming off. The drive assembly 6 includes a lifting plate 601. The outer wall of the lifting plate 601 slides in contact with the inner wall of the protective box 5, allowing it to slide smoothly vertically along the inner wall of the protective box 5. Mounting plates 602 are fixed to both sides of the upper surface of the lifting plate 601. A drive motor 603 is mounted between the two mounting plates 602 by screws. The output end of the drive motor 603 passes through one mounting plate 602 and is fixed with a drive shaft 6031. A vertical strip-shaped slot 501 is provided on the side of the protective box 5 near the placement of the assembly 4. The end of the drive shaft 6031 passes through the strip-shaped slot 501 and is fixed with a plug-in block 6032. The plug-in block 6032 uses a polygonal plug-in design. In the structure, the end of the sleeve block 405 near the protective box 5 in the placement component 4 is provided with a plug-in groove 4051. The plug-in groove 4051 matches the plug-in block 6032 to realize circumferential torque transmission. At the same time, it can be adapted to the vertical sliding of the drive shaft 6031 to ensure that the transmission is not disengaged. An electric telescopic cylinder 604 is provided on the upper surface of the lifting plate 601 on the side of the drive motor 603. The fixed end of the electric telescopic cylinder 604 is connected to the inner top wall of the protective box 5 with screws, and the telescopic end of the electric telescopic cylinder 604 is connected to the upper surface of the lifting plate 601 with screws. Through the telescopic action of the electric telescopic cylinder 604, the lifting plate 601 can be driven to slide vertically as a whole.

[0022] The staff fixes the vertical plate 3 to both ends of the box 1 with screws, so that the movable block 401 is directly above the fixing hole 1051 of the side plate 105. Then, the movable block 401 is moved up to press the spring 407. Then, the sliding cover 409 is slid open. The hexagonal bolt 7 is placed in the hexagonal placement groove 4021 of the rotating plate 402 through the opening and closing groove 408, so that the bolt head of the hexagonal bolt 7 is engaged and limited with the hexagonal placement groove 4021. The bolt rod passes vertically through the movable block 401 and faces downward directly to the fixing hole 1051. The sliding cover 409 is reset to lock the hexagonal bolt 7 vertically to prevent it from coming out. At this time, under the elasticity of the spring 407, the movable block 401 presses down the hexagonal bolt 7 initially, so that the bottom of the hexagonal bolt 7 is aligned with the upper end of the fixing hole 1051. At the same time, the nut 202 is placed into the limiting groove of the locking block 201. The locking block 201 is used to limit the rotation of the nut 202. The two protective boxes 5 are respectively connected to the auxiliary positioning tube 104 of the box body 1 via positioning rod 502, so that the protective box 5 can be quickly and accurately positioned. At the same time, the plug block 6032 at the end of the drive shaft 6031 will be inserted into the plug slot 4051 of the sleeve block 405. If there is any offset, the position of the movable block 401 will be manually adjusted to ensure alignment, thereby completing the transmission docking between the drive component 6 and the placement component 4. The connecting plate 503 between the two protective boxes 5 will be inserted between the two snap-fit ​​plates 102, and then detachable installation will be performed. The pre-assembled housing 1 is hoisted to the designated position on the column mounting frame, with the housing 1 and the lower surface of the side plate 105 above the mounting frame, and the bottom plate 2 and locking block 201 below the mounting frame. The fixing holes 1051, hex bolts 7, and nuts 202 are precisely aligned with the pre-set positioning holes on the mounting frame. At this time, the drive motor 603 and the electric telescopic cylinder 604 are started simultaneously. The output end of the drive motor 603 drives the transmission shaft 6031 to rotate. Through the engagement of the plug block 6032 and the plug slot 4051, the sleeve block 405 rotates circumferentially. The sleeve block 405 drives the worm gear 404 to rotate through the shaft 4041. At the same time, the worm gear 404 will drive the other worm gear 404 to rotate synchronously through the connecting rod 406, ensuring that the two sets of worm gears 404 on the same side of the housing 1 operate synchronously. The worm gear 404 rotates and meshes with the worm wheel 4022, which in turn drives the rotating plate 402 to rotate stably inside the chamber 4011. The rotating plate 402 simultaneously drives the hexagonal bolt 7, which is engaged inside, to rotate continuously in a circumferential direction. At the same time, the electric telescopic cylinder 604 extends, pushing the lifting plate 601 to slide down along the inner wall of the protective box 5, which in turn drives the drive motor 603 and the transmission shaft 6031 to move down as a whole. The transmission shaft 6031 moves vertically along the strip-shaped through groove 501, and through the plug-in transmission structure, drives the sleeve block 405, the shaft 4041 and the overall movable block 401 to slide down synchronously along the T-shaped slide rail 301. During the sliding process, the spring 407 gradually releases its compression, maintaining a slightly compressed state throughout the entire process. Ultimately, the hexagonal bolt 7 rotates while being vertically fed downwards, and the bolt shank passes through the fixing hole 1051 and the mounting bracket positioning hole in sequence, and finally engages with the nut 202 at the upper limit of the locking block 201 to lock it, thus completing the fully automatic fixed installation of the box 1 and the column mounting bracket. After installation, the hexagonal bolt 7 and the nut 202 are respectively limited, preventing circumferential loosening, ensuring the long-term stability of the connection structure, and reducing the risk of bolt loosening after outdoor installation. After the equipment is finally installed and fixed, the staff disassembles the connecting plate 503 and the two protective boxes 5. This ensures that the bolts on both sides of the vacuum circuit breaker are tightened synchronously and evenly by means of mechanical linkage, thus preventing problems such as equipment misalignment and uneven force. This effectively protects the assembly accuracy of the permanent magnet operating mechanism and the vacuum interrupter inside the box 1, ensuring the stability and accuracy of the opening and closing actions of the vacuum circuit breaker, and greatly improving the installation efficiency and assembly quality of the outdoor pole-mounted vacuum circuit breaker.

[0023] Please see Figure 1 and Figure 3As shown, the two protective boxes 5 are fixedly connected by a connecting plate 503. Two snap-fit ​​plates 102 are fixed to the outer wall of the box body 1. The distance between the two snap-fit ​​plates 102 is adapted to the height of the connecting plate 503, so that the connecting plate 503 can be snapped into the limit position. Multiple anti-detachment snap-fit ​​plates 103 are provided between the two snap-fit ​​plates 102. Grooves 1021 adapted to the anti-detachment snap-fit ​​plates 103 are opened on both snap-fit ​​plates 102. The top two sides of the multiple anti-detachment snap-fit ​​plates 103 are rotatably connected to the groove wall of the groove 1021 by rods. Coaxial screw holes for screw fixing are opened in the middle of the multiple anti-detachment snap-fit ​​plates 103 and at the corresponding position on the connecting plate 503. By inserting screws, the anti-detachment snap-fit ​​plates 103 and the connecting plate 503 can be locked and fixed, thereby detachably fixing the entire protective box 5 to the outer wall of the box body 1. Both ends of the two auxiliary positioning tubes 104 are sealed to the penetration box 1, and the sealing is done with sealant to ensure the airtightness of the box 1. Both auxiliary positioning tubes 104 are made of heat-absorbing material.

[0024] After the connecting plate 503 is inserted between the two snap-fit ​​plates 102, the worker flips the anti-detachment snap-fit ​​plate 103 so that the anti-detachment snap-fit ​​plate 103 rotates to the front side of the connecting plate 503 to block the limit. The entire protective box 5 is locked and fixed by passing screws through the coaxial screw holes of the anti-detachment snap-fit ​​plate 103 and the connecting plate 503. When disassembly is required, the worker removes the fixing screws between the anti-detachment plate 103 and the connecting plate 503, flips the anti-detachment plate 103 upward to release the limit, and then the connecting plate 503 and the two protective boxes 5 on both sides can be removed outward as a whole. The positioning rod 502 is disengaged from the auxiliary positioning tube 104, and the plug block 6032 is automatically separated from the plug slot 4051, so as to realize the overall disassembly of the drive component 6 and the protective box 5. This effectively prevents electrical components from aging and being damaged by long-term exposure to outdoor sun, rain, and wind and sand erosion, reducing the probability of equipment failure and subsequent maintenance costs. At the same time, a single drive component 6 can be repeatedly adapted to multiple vacuum circuit breakers for installation and use, reducing the equipment matching investment for batch construction. During operation, the permanent magnet operating mechanism inside the enclosure 1 of the vacuum circuit breaker generates heat. The auxiliary positioning tube 104, made of a high heat-absorbing material, can quickly absorb the heat accumulated inside the enclosure 1. Outdoor natural wind can penetrate the auxiliary positioning tube 104 to form a convective airflow, continuously carrying away the internal heat absorbed by the tube wall, thus achieving passive automatic cooling inside the enclosure 1. This effectively reduces the operating temperature of the permanent magnet operating mechanism, prevents the permanent magnet from demagnetizing at high temperatures, delays the aging of internal components, and improves the outdoor operation stability and service life of the equipment.

[0025] The working principle of this invention is as follows: During the equipment pre-installation stage: The staff fixes the vertical plate 3 to both ends of the housing 1 with screws, so that the movable block 401 is directly above the fixing hole 1051 of the side plate 105. Then, the movable block 401 is moved up to press the spring 407. Then, the sliding cover 409 is slid open. The hexagonal bolt 7 is placed in the hexagonal placement slot 4021 of the rotating plate 402 through the opening and closing slot 408, so that the bolt head of the hexagonal bolt 7 is engaged and limited with the hexagonal placement slot 4021. The bolt rod passes vertically through the movable block 401 and faces downwards to the fixing hole 1051. The sliding cover 409 is reset to lock the hexagonal bolt 7 vertically to prevent it from coming out. At this time, under the elasticity of the spring 407, the movable block 401 presses down with the hexagonal bolt 7 initially, so that the bottom of the hexagonal bolt 7 is aligned with the upper end of the fixing hole 1051. At the same time, the nut 202 is placed into the limiting slot of the locking block 201. The locking block 201 is used to limit the rotation of the nut 202. The two protective boxes 5 are respectively connected to the auxiliary positioning tube 104 of the box body 1 via positioning rods 502, so that the protective boxes 5 can be quickly and accurately positioned. At the same time, the plug block 6032 at the end of the drive shaft 6031 will be inserted into the plug slot 4051 of the sleeve block 405. If there is any offset, the position of the movable block 401 will be manually adjusted to ensure alignment, thereby completing the transmission docking between the drive component 6 and the placement component 4. The connecting plate 503 between the two protective boxes 5 will be inserted between the two snap-fit ​​plates 102. The operator flips the anti-detachment snap-fit ​​plate 103 so that the anti-detachment snap-fit ​​plate 103 rotates to the front side of the connecting plate 503 to block the limit. The screw passes through the coaxial screw hole of the anti-detachment snap-fit ​​plate 103 and the connecting plate 503 to complete the overall locking and fixing of the protective box 5. Installation and locking stage: The pre-assembled box 1 is hoisted to the designated position on the column mounting frame, that is, the box 1 and the lower surface of the side plate 105 are above the mounting frame, the bottom plate 2 and the locking block 201 are below the mounting frame, and the fixing hole 1051, hex bolt 7 and nut 202 are precisely aligned with the preset positioning holes of the mounting frame. At this time, the drive motor 603 and the electric telescopic cylinder 604 are started simultaneously. The output end of the drive motor 603 drives the transmission shaft 6031 to rotate. Through the engagement of the plug block 6032 and the plug slot 4051, the sleeve block 405 is rotated circumferentially. The sleeve block 405 drives the worm gear 404 to rotate through the shaft 4041. At the same time, the worm gear 404 will drive the other worm gear 404 to rotate synchronously through the connecting rod 406, ensuring that the two sets of worm gears 404 on the same side of the box 1 operate synchronously. The worm gear 404 rotates and meshes with the worm wheel 4022, which in turn drives the rotating plate 402 to rotate stably inside the chamber 4011. The rotating plate 402 simultaneously drives the hexagonal bolt 7, which is engaged inside, to rotate continuously in a circumferential direction. At the same time, the electric telescopic cylinder 604 extends, pushing the lifting plate 601 to slide down along the inner wall of the protective box 5, which in turn drives the drive motor 603 and the transmission shaft 6031 to move down as a whole. The transmission shaft 6031 moves vertically along the strip-shaped through groove 501, and through the plug-in transmission structure, drives the sleeve block 405, the shaft 4041 and the overall movable block 401 to slide down synchronously along the T-shaped slide rail 301. During the sliding process, the spring 407 gradually releases its compression, maintaining a slightly compressed state throughout the entire process. Ultimately, the hexagonal bolt 7 rotates while being vertically fed downwards, and the bolt shank passes through the fixing hole 1051 and the mounting bracket positioning hole in sequence, and finally engages with the nut 202 at the upper limit of the locking block 201 to lock it, thus completing the fully automatic fixed installation of the box 1 and the column mounting bracket. After installation, the hexagonal bolt 7 and the nut 202 are respectively limited, preventing circumferential loosening, ensuring the long-term stability of the connection structure, and reducing the risk of bolt loosening after outdoor installation. Disassembly and Reuse Stage: After the final equipment installation and fixing are completed, the staff removes the fixing screws between the anti-detachment plate 103 and the connecting plate 503, flips the anti-detachment plate 103 upward to release the limit, and then the connecting plate 503 and the two protective boxes 5 on both sides can be removed outward as a whole. The positioning rod 502 is disengaged from the auxiliary positioning tube 104, and the plug block 6032 and the plug slot 4051 are automatically separated, realizing the overall disassembly of the drive component 6 and the protective box 5. It can be transferred to the next vacuum circuit breaker equipment for reuse, which greatly reduces equipment wear and construction costs.

[0026] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism, comprising a housing (1) and a pole post (101) disposed on the top of the housing (1), wherein the housing (1) is equipped with a permanent magnet operating mechanism, characterized in that, The left and right ends of the box (1) are each fixed with two vertical plates (3) by screws. Each vertical plate (3) is integrally provided with a T-shaped slide rail (301). Each T-shaped slide rail (301) is slidably assembled with a placement component (4). The placement component (4) contains a hexagonal bolt (7) for fixing the box (1). The bottom of the left and right ends of the box (1) is fixed with a base plate (2). The two base plates (2) are symmetrically fixed with locking blocks (201) for placing nuts (202). The two side walls of the box (1) are integrally provided with side plates (105). The two side plates (105) are symmetrically provided with fixing holes (1051) for the hexagonal bolts (7) to pass through and descend. The outer wall of the box (1) can be detachably installed with a protective box (5) at the placement component (4). Both protective boxes (5) are equipped with a drive component (6). The drive component (6) is in transmission cooperation with the placement component (4). The drive component (6) is used to drive the hexagonal bolt (7) to rotate and synchronously drive the placement component (4) to move down along the T-shaped slide rail (301) to realize the tightening and locking of the hexagonal bolt (7) and the nut (202). Both sides of the box (1) are provided with auxiliary positioning tubes (104) that have both positioning and heat dissipation functions.

2. The complete set of outdoor pole-mounted vacuum circuit breakers with permanent magnet operating mechanism according to claim 1, characterized in that, Each of the placement components (4) includes a movable block (401) which is slidably mounted on a T-shaped slide rail (301). The movable block (401) has a cavity (4011) inside, and a rotating plate (402) is rotatably mounted in the cavity (4011). The rotating plate (402) has a hexagonal placement groove (4021) in the middle that matches the head of the hexagonal bolt (7). A worm gear (4022) is fixedly sleeved on the outer wall of the rotating plate (402), and the cavity wall of the cavity (4011) has a groove adapted to the worm gear (4022).

3. A complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism according to claim 2, characterized in that, The movable block (401) has a driving cavity (403) that communicates with the cavity (4011) on one side. The driving cavity (403) is provided with a worm (404). The worm (404) meshes with the worm wheel (4022) for transmission. Both ends of the worm (404) are fixed with shafts (4041). One end of the two shafts (4041) extends out of the driving cavity (403) and is fixedly connected to a sleeve block (405). The sleeve blocks (405) arranged opposite to each other are connected by a connecting rod (406). The two ends of the connecting rod (406) are fixedly connected to the corresponding sleeve blocks (405).

4. A complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism according to claim 2, characterized in that, The top of the vertical plate (3) is fixed with a top plate (302), and springs (407) are symmetrically arranged between the top plate (302) and the upper surface of the movable block (401). The two ends of the two springs (407) are respectively fixedly connected to the lower surface of the top plate (302) and the upper surface of the movable block (401).

5. A complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism according to claim 2, characterized in that, The upper surface of the movable block (401) is provided with an opening and closing groove (408) that communicates with the chamber (4011). A sliding cover (409) is slidably installed in the opening and closing groove (408), and the lower surface of the sliding cover (409) is in contact with the upper surface of the rotating plate (402).

6. A complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism according to claim 1, characterized in that, The two protective boxes (5) are fixed with positioning rods (502) on the outer wall of one side facing the box body (1). The two positioning rods (502) are inserted into the corresponding auxiliary positioning tubes (104). The two protective boxes (5) are fixedly connected by a connecting plate (503).

7. A complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism according to claim 6, characterized in that, Two snap-fit ​​plates (102) are fixed to the outer wall of the box (1). The distance between the two snap-fit ​​plates (102) is adapted to the height of the connecting plate (503). Multiple anti-detachment snap-fit ​​plates (103) are provided between the two snap-fit ​​plates (102). Grooves (1021) adapted to the anti-detachment snap-fit ​​plates (103) are opened on both snap-fit ​​plates (102). The top two sides of the multiple anti-detachment snap-fit ​​plates (103) are rotatably connected to the groove wall of the groove (1021) by rods. Coaxial screw holes for screw fixing are opened in the middle of the multiple anti-detachment snap-fit ​​plates (103) and at corresponding positions on the connecting plate (503).

8. A complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism according to claim 1, characterized in that, The drive assembly (6) includes a lifting plate (601), the outer wall of the lifting plate (601) slides in contact with the inner wall of the protective box (5), and mounting plates (602) are fixed on both sides of the upper surface of the lifting plate (601). A drive motor (603) is installed between the two mounting plates (602) by screws. The output end of the drive motor (603) passes through a mounting plate (602) and is fixed with a transmission shaft (6031). A vertical strip groove (501) is opened on the side of the protective box (5) near the placement assembly (4). The end of the transmission shaft (6031) passes through the strip groove (501) and is fixed with a plug block (6032).

9. A complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism according to claim 8, characterized in that, The placement component (4) has a plug-in slot (4051) at the end of the sleeve block (405) near the protective box (5). The plug-in slot (4051) matches the plug-in block (6032). The upper surface of the lifting plate (601) is provided with an electric telescopic cylinder (604) on the side of the drive motor (603). The fixed end of the electric telescopic cylinder (604) is connected to the inner top wall of the protective box (5) by screws. The telescopic end of the electric telescopic cylinder (604) is connected to the upper surface of the lifting plate (601) by screws.

10. A complete set of outdoor pole-mounted vacuum circuit breakers with a permanent magnet operating mechanism according to claim 1, characterized in that, Both ends of the two auxiliary positioning tubes (104) are sealed to the through box (1), and both auxiliary positioning tubes (104) are made of heat-absorbing material.

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