A primary and secondary fusion outdoor pole vacuum circuit breaker device

Abstract

The application discloses a primary and secondary fusion outdoor pole-mounted vacuum circuit breaker device, which comprises a vacuum arc-extinguishing chamber, a top block is fixedly connected to the inner wall top end of the vacuum arc-extinguishing chamber, an insulating plate is slidably connected to a static conducting rod and rotates relative to the axis of the static conducting rod, a fixed disc is fixedly connected to a moving conducting rod, a first buffer assembly is arranged between the fixed disc and the insulating plate, and a second buffer assembly is arranged between the insulating plate and the top block. The first buffer assembly and the second buffer assembly form a complete buffer chain from a mechanism box to the inside of the arc-extinguishing chamber. The closing impact kinetic energy is absorbed step by step, and the collision damage to the internal components of the vacuum arc-extinguishing chamber is effectively reduced. After the moving and static contacts are contacted, the first and second buffer assemblies continue to absorb the excess kinetic energy, the step-by-step deformation of the shock-absorbing sleeve and the conical compression of the special-shaped spring are matched, the closing repeated bouncing of the moving contact is completely inhibited, the contact ablation caused by the bouncing is avoided, and the stability of the circuit connection is improved.

Description

Technical Field

[0001] This invention belongs to the field of vacuum circuit breaker technology, specifically relating to an outdoor pole-mounted vacuum circuit breaker device that integrates primary and secondary circuits. Background Technology

[0002] The primary and secondary integrated outdoor pole-mounted vacuum circuit breaker is a key device widely used in power distribution networks. It integrates the circuit breaker body, disconnecting switch, and intelligent control unit into one unit, possessing functions such as fault isolation, automatic reclosing, and remote communication, and has a significant impact on power supply reliability and automation level. Currently, this type of equipment generally uses a vacuum interrupter as the core breaking element, relying on the operating mechanism to drive the moving conductive rod to reciprocate, realizing the closing and opening of the moving and stationary contacts.

[0003] However, existing outdoor pole-mounted vacuum circuit breakers still have the following shortcomings in actual operation: 1. Large closing impact, easily damaging internal components: During the closing process, the kinetic energy output by the operating mechanism is directly transmitted to the moving conductive rod through the transmission components. The moving contact impacts the stationary contact at a high speed, generating a large impact load. This impact not only accelerates the fatigue wear of precision components such as guides and bellows inside the vacuum interrupter, but in severe cases, it can even cause hidden cracks in the ceramic shell of the interrupter, affecting the long-term service life and insulation performance of the equipment.

[0004] 2. Significant closing bounce, leading to contact erosion: Due to the lack of effective buffering and bounce suppression structures, the moving and stationary contacts often bounce repeatedly after closing contact. During the bounce, electric arcs are continuously generated in the contact gap, causing the contact surface material to burn, melt, or even weld, significantly reducing the electrical life of the contacts. Simultaneously, the electric arcs caused by the bounces also contaminate the inner wall of the vacuum interrupter, weakening its arc-extinguishing capacity and increasing the equipment failure rate.

[0005] 3. Existing buffer structures are simple and have limited buffering effect: Although some existing products have a single spring buffer in the transmission link, this buffering method can only absorb part of the impact and cannot continue to suppress the bounce after the contact. Moreover, the buffering force characteristics are poorly matched with the closing kinetic energy decay law, which can easily lead to insufficient buffering or excessive resistance to the closing speed, affecting the reliability of closing. Summary of the Invention

[0006] The purpose of this invention is to provide a primary and secondary integrated outdoor pole-mounted vacuum circuit breaker device to solve the contact problem mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A primary and secondary integrated outdoor pole-mounted vacuum circuit breaker device includes a mechanism box, a circuit breaker body and a disconnecting switch. The circuit breaker body is provided with a vacuum interrupter chamber. The vacuum interrupter chamber is provided with a static conductive rod and a moving conductive rod. A top block is fixedly connected to the top of the inner wall of the vacuum interrupter chamber. An insulating plate is slidably connected to the stationary conductive rod, and the insulating plate rotates relative to the axis of the stationary conductive rod. A fixed disk is fixedly connected to the moving conductive rod. A first buffer assembly is provided between the fixed disk and the insulating plate, and a second buffer assembly is provided between the insulating plate and the top block.

[0008] Preferably, there are multiple first buffer components and multiple second buffer components, and the multiple first buffer components and multiple second buffer components are distributed along a circumferential array.

[0009] Preferably, the first buffer assembly includes a buffer sleeve and a buffer shaft. The buffer sleeve is fixedly connected to the bottom of the insulating plate, and the buffer shaft is fixedly connected to the top of the fixed disk. The buffer shaft is slidably connected inside the buffer sleeve, and a buffer spring for buffering and shock absorption is installed inside the buffer sleeve.

[0010] Preferably, the second buffer assembly includes a shock-absorbing sleeve, which is an integrally molded elastic rubber part. The shock-absorbing sleeve body has at least three coaxially distributed umbrella-shaped protrusions arranged in sequence along the axial direction. Adjacent umbrella-shaped protrusions are connected by a neck with a reduced diameter. A top plate and a bottom plate are respectively installed on the top and bottom of the shock-absorbing sleeve. The top plate is slidably connected to the top block, and the bottom of the bottom plate is fixedly connected to the insulating plate.

[0011] Preferably, the umbrella-shaped protrusions are ellipsoidal or drum-shaped structures, and the outer diameters of each umbrella-shaped protrusion can be set to be the same or different.

[0012] Preferably, the top plate has a positioning shaft on the side facing the inside of the shock-absorbing sleeve, and a shaped spring is fixedly assembled between the top plate and the bottom plate.

[0013] Preferably, the irregular spring has a tapered structure that is narrow at the top and wide at the bottom, and the positioning shaft is tapered and adapted to the narrow end of the irregular spring.

[0014] Preferably, the top plate is provided with an extension head, and a plurality of balls are equidistantly arranged on the outer circumference of the extension head. A track groove is opened on the top block, and the extension head is installed in the track groove. A guide track adapted to the balls is formed in the track groove.

[0015] Preferably, the disconnecting switch includes a breaking shaft, an operating handle is fixedly connected to one end of the breaking shaft, an mounting block is mounted on the operating handle and the breaking shaft, a shaft rod is fixedly connected to the front end of the mounting block, branch shafts are symmetrically distributed on both sides of the mounting block, guide rods are fixedly connected to the branch shafts, and oblique openings are symmetrically opened on both sides of the operating handle.

[0016] Preferably, a rotating block is rotatably connected to the shaft, and a blade is fixedly connected to the rotating block. Reflective stickers are affixed to the outer walls of the blade, branch shaft, and guide rod.

[0017] The technical solution of this invention has the following beneficial effects: 1. Multi-stage buffering absorbs closing impact: The push rod, sliding sleeve, and external spring constitute the primary and secondary buffers for closing; combined with the first and second buffer components, a complete buffer chain is formed from the mechanism box to the inside of the vacuum interrupter. The kinetic energy of the closing impact is absorbed stage by stage, effectively reducing collision damage to the internal components of the vacuum interrupter.

[0018] 2. Effectively suppress closing bounce: After the moving and stationary contacts make contact, the first and second buffer components continue to absorb excess kinetic energy. Combined with the gradual deformation of the shock-absorbing sleeve and the conical compression of the irregular spring, the repeated bouncing of the moving contact during closing is completely suppressed, avoiding contact erosion caused by bouncing and improving the stability of the circuit connection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a structural diagram of the circuit breaker body of the present invention.

[0022] Figure 3 This is a cross-sectional view of the internal structure of the circuit breaker body of the present invention.

[0023] Figure 4 This is a schematic diagram of the installation of the tie rod structure of the present invention.

[0024] Figure 5 This is a cross-sectional view of the vacuum interrupter chamber of the present invention.

[0025] Figure 6 This is a partial cross-sectional view of the vacuum interrupter chamber of the present invention.

[0026] Figure 7 This is an exploded view of the interior of the vacuum interrupter chamber of the present invention.

[0027] Figure 8 Internal cross-sectional view of the second buffer component of the present invention.

[0028] Figure 9 This is a partial structural diagram of the vacuum interrupter chamber of the present invention.

[0029] Figure 10 This is a schematic diagram of the shock-absorbing sleeve structure of the present invention.

[0030] Figure 11 This is a schematic diagram of the contact structure of the present invention.

[0031] Figure 12 This is a structural diagram of the operating handle of the present invention.

[0032] Figure 13 This is a cross-sectional view of the inside of the operating handle of the present invention.

[0033] Reference numerals: 10. Mechanism box; 101. Operating spindle; 20. Circuit breaker body; 201. Vacuum interrupter chamber; 202. Shielding cover; 203. Top block; 204. Static conductive rod; 205. Static contact; 206. Insulating plate; 207. Shock-absorbing sleeve; 208. Base plate; 209. Top plate; 210. Positioning shaft; 211. Irregular spring; 212. Fixing nut; 213. Extension head; 214. Ball bearing; 215. Buffer sleeve; 216. Moving conductive rod 217. Rod; 218. Moving contact; 219. Fixed plate; 220. Buffer shaft; 221. Buffer spring; 222. Bolt hole; 222. Track groove; 30. Disconnecting switch; 301. Breaking shaft; 302. Operating handle; 303. Slanted opening; 304. Mounting block; 305. Rotating block; 306. Blade; 307. Branch shaft; 308. Guide rod; 309. Shaft; 40. Pull rod; 401. Sliding sleeve; 402. External spring; 403. Push rod. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0035] Example 1: Reference Figures 1-11 , A primary and secondary integrated outdoor pole-mounted vacuum circuit breaker device includes a mechanism box 10, a circuit breaker body 20, and a disconnecting switch 30. The circuit breaker body 20 has a vacuum interrupter 201 inside, and a stationary conductive rod 204 and a moving conductive rod 216 are provided inside the vacuum interrupter 201. A top block 203 is fixedly connected to the top of the inner wall of the vacuum interrupter 201. A stationary contact 205 is provided at the bottom of the stationary conductive rod 204, and a moving contact 217 is provided at the top of the moving conductive rod 216. A shielding cover 202 is fixed to the inner wall of the vacuum interrupter 201.

[0036] In this embodiment of the invention, the mechanism housing 10 contains an operating spindle 101. A pull rod 40 is connected to the bottom of the moving conductive rod 216. A sliding sleeve 401 is slidably connected to the pull rod 40, and an external spring 402 is provided on the sliding sleeve 401. A push rod 403 is slidably mounted at the bottom of the pull rod 40. When the mechanism housing 10 is working, the operating spindle 101 drives the push rod 403 to reciprocate, thereby realizing the contact and separation of the moving contact 217 and the stationary contact 205. During the closing process, the push rod 403 squeezes the sliding sleeve 401, causing the external spring 402 to be compressed to form a preliminary buffer. At the same time, the push rod 403 can slide relative to the bottom of the pull rod 40 to further consume the impact force generated during the closing process, forming a secondary buffer. This effectively reduces the collision damage to the internal components of the vacuum interrupter 201 caused by the closing action and improves the stability of the closing of the moving and stationary contacts. During the opening process, when the moving conductive rod 216 drives the moving contact 217 to quickly break away from the stationary contact 205, the sliding sleeve 401 will be buffered in the opposite direction under the reset force of the external spring 402, which slows down the speed at the end of the opening stroke of the moving conductive rod 216 and avoids the moving conductive rod 216 from impacting and damaging the inner wall components of the vacuum interrupter 201 during the return stroke.

[0037] To reduce the closing bounce of the moving contact 217 and the stationary contact 205: an insulating plate 206 is slidably connected to the stationary conductive rod 204, and the insulating plate 206 rotates relative to the axis of the stationary conductive rod 204. A fixed disk 218 is fixedly connected to the moving conductive rod 216. A first buffer assembly is provided between the fixed disk 218 and the insulating plate 206, and a second buffer assembly is provided between the insulating plate 206 and the top block 203.

[0038] In this embodiment of the invention, the moving contact 217 and the stationary contact 205 are cup-shaped (see reference). Figure 11Both the moving contact 217 and the stationary contact 205 have spiral cuts. After the circuit is closed, the current flows through the spiral cuts and generates a longitudinal magnetic field, which helps the electric arc on the contact surface to extinguish more quickly, reduces the degree of burn damage to the contact surface caused by the arc, and extends the service life of the contacts. The first and second buffer components absorb the impact kinetic energy of the moving contact 217 approaching the stationary contact during the closing process. After the moving and stationary contacts make contact, they offset the excess impact force and suppress the repeated bouncing of the moving contact 217 after closing. This can avoid contact erosion caused by bouncing and improve the stability of the circuit connection after closing.

[0039] Both the first buffer component and the second buffer component are provided in multiples, and the multiple first buffer components and second buffer components are distributed along a circular array.

[0040] In this embodiment of the invention, the first and second buffer components distributed in a circumferential array are used to balance the impact forces received in various directions, avoid uneven force distribution that could cause the moving conductive rod 216 to deviate, ensure that the moving contact 217 is always accurately aligned with the stationary contact 205 along the axial direction to complete the closing, prevent the contact from having insufficient contact area or excessive local stress due to positional deviation, and further improve the reliability of the closing contact.

[0041] To describe the buffering process, the structure of the first buffer assembly is disclosed in a defined manner: the first buffer assembly includes a buffer sleeve 215 and a buffer shaft 219. The buffer sleeve 215 is fixedly connected to the bottom of the insulating plate 206, and the buffer shaft 219 is fixedly connected to the top of the fixed disk 218. The buffer shaft 219 is slidably connected inside the buffer sleeve 215, and a buffer spring 220 for buffering and shock absorption is installed inside the buffer sleeve 215.

[0042] In this embodiment of the invention, when the moving conductive rod 216 pushes the fixed disk 218 towards the insulating plate 206, the buffer shaft 219 slides along the inner wall of the buffer sleeve 215, gradually compressing the buffer spring 220. The buffer spring 220 absorbs the impact kinetic energy of the closing process through elastic deformation, offsetting excess impact force. Together with the second buffer assembly, it suppresses the bouncing of the moving contact 217. At the same time, multiple buffer assemblies distributed in a circumferential array evenly bear the impact, preventing the moving conductive rod 216 from being deflected by lateral force and ensuring that the moving contact 217 moves along the preset axial direction. It should be noted that the buffer spring 220 is composed of a small spring structure, located on the inner wall of the buffer sleeve 215 to avoid exposure to the influence of electric arc and performance degradation. The small spring design can effectively buffer the impact while avoiding excessive rigidity of the spring itself affecting the buffering energy absorption effect, making the buffering process smoother and more gradual. It will not cause excessive resistance to the closing action of the moving conductive rod 216, ensuring that the closing action can be completed stably as required. That is, the kinetic energy buffered in the first buffer assembly stage will not be too large. The buffer sleeve 215 and the buffer shaft 219 are made of insulating material, as is the fixed plate 218. The maximum opening stroke of the moving conductive rod 216 will not cause the buffer shaft 219 to disengage from the buffer sleeve 215.

[0043] The second buffer assembly includes a shock-absorbing sleeve 207, which is an integrally molded elastic rubber part. The body of the shock-absorbing sleeve 207 has at least three coaxially distributed umbrella-shaped protrusions arranged in sequence along the axial direction. Adjacent umbrella-shaped protrusions are connected by a neck with a reduced diameter. A top plate 209 and a bottom plate 208 are respectively installed on the top and bottom of the shock-absorbing sleeve 207. The top plate 209 is slidably connected to the top block 203, and the bottom of the bottom plate 208 is fixedly connected to the insulating plate 206.

[0044] In this embodiment of the invention, after being buffered by the first buffer component, the compression stroke of the buffer spring 220 reaches its limit and cannot be compressed further. Subsequently, the buffer shaft 219 transmits the excess closing force to the insulating plate 206 through the buffer sleeve 215. That is, the insulating plate 206 slides along the static conductive rod 204, compressing the shock-absorbing sleeve 207 placed between the insulating plate 206 and the top block 203. Multiple umbrella-shaped protrusions are subjected to force in sequence and undergo elastic deformation. The contact area of ​​the umbrella-shaped structure gradually increases during the compression process, and the deformation resistance gradually increases. This allows for the graded absorption of the remaining impact kinetic energy, gradually consuming the remaining impact force, and ultimately completely absorbing the excess kinetic energy of the moving contact 217. This avoids the rigid impact of the moving contact 217 causing bouncing and does not have an excessive impact on the closing speed. Since the shock-absorbing sleeve 207 is an integral rubber structure, it does not require additional lubrication or protection and is not affected by changes in outdoor temperature and humidity, resulting in higher reliability over long-term use. A fixing nut 212 is installed at the center of the bottom of the base plate 208. The fixing nut 212 fixes the base plate 208 to the insulating plate 206 together, improving the stability of the base plate 208. The connection between the top plate 209 and the base plate 208 is a fixed connection, which can be a threaded connection, a nut fixing connection, or other forms.

[0045] Further defining the umbrella-shaped protrusions, the umbrella-shaped protrusions are ellipsoidal or drum-shaped structures, and the outer diameters of each umbrella-shaped protrusion can be set to be the same or different.

[0046] In this embodiment of the invention, if the outer diameter of each umbrella-shaped protrusion is set to gradually increase along the direction of force, during compression, the protrusion with a smaller diameter will deform first upon contact. As the compression stroke progresses, the protrusion with a larger diameter will successively bear the force and participate in deformation. The area for absorbing impact increases more gradually, and the increase in resistance is more in line with the kinetic energy attenuation law of the closing process of the moving contact 217, resulting in a more uniform and stable buffering effect. If the outer diameter is set to be the same, the manufacturing difficulty is lower, making mass production easier. When subjected to force, the ellipsoidal or drum-shaped arc surface structure can evenly distribute stress along the arc surface, preventing local stress concentration and cracking, and further extending the service life of the shock-absorbing sleeve 207.

[0047] A positioning shaft 210 is provided on the side of the top plate 209 facing the inside of the shock-absorbing sleeve 207. A non-circular spring 211 is fixedly assembled between the top plate 209 and the bottom plate 208. The non-circular spring 211 has a tapered structure that is narrow at the top and wide at the bottom. The positioning shaft 210 is tapered and is adapted to the narrow end of the non-circular spring 211.

[0048] Furthermore, in this embodiment of the invention, the positioning shaft 210 is inserted inside the narrow end of the irregular spring 211, which can limit the deformation direction of the irregular spring 211, prevent lateral displacement and jamming when the spring is under force, and ensure that the irregular spring 211 always contracts stably along the axial direction for buffering. Combined with the deformation energy absorption of the outer shock-absorbing sleeve 207, a double buffer structure is formed, further improving the stability of the closing buffer. Compared with a cylindrical spring of equal diameter, the elastic force growth characteristic of the irregular spring 211 is more in line with the kinetic energy decay law of the moving contact 217 during the closing process. At the same time, the structure, narrow at the top and wide at the bottom, prevents jamming between adjacent spring coils during compression, resulting in a smoother buffering process. Similarly, the irregular spring 211 located inside the shock-absorbing sleeve 207 can also significantly avoid interference from electric arcs and extend its service life.

[0049] Example 2: Reference Figures 6-10 , The top plate 209 is provided with an extension head 213. Several balls 214 are equidistantly arranged on the outer circumference of the extension head 213. The top block 203 is provided with a track groove 222. The extension head 213 is installed in the track groove 222. A guide track adapted to the balls 214 is formed in the track groove 222.

[0050] In this invention, to accommodate the characteristics of some moving conductive rods 216, some moving conductive rods 216 are assembled using a rotating method. That is, when the circuit is closed, the vertical downward / upward axial force, vibration factor, or unique passive rotational structure design causes the moving conductive rod 216 to rotate. It should be noted that the purpose of rotating the moving conductive rod 216 is to change the contact point between the moving contact 217 and the stationary contact 205, thus altering the uniformity of friction. Corresponding to the "spiral cut" mentioned above, both have the same goal: uniform ablation, extended lifespan, and improved breaking capacity. For details, please refer to the following: Figure 6In the middle, the moving contact 217 has a bolt hole 221 inside, and a bolt is locked inside the bolt hole 221. The fixed plate 218 is fixed to the moving conductive rod 216 by the bolt. Therefore, when the moving conductive rod 216 rotates slightly, it will synchronously drive the fixed plate 218 to rotate. Since the insulating plate 206 is slidably connected to the stationary conductive rod 204 and also has rotational capability, when the fixed plate 218 rotates, the buffer shaft 219 moves the buffer sleeve 215, causing the insulating plate 206 to rotate synchronously. The shock-absorbing sleeve 207 moves and rotates with the insulating plate 206. Here, the track groove 2... 22 is a circular track, coaxial with the stationary conductive rod 204. It is installed in the track groove 222 through the extension head 213. Combined with the ball bearing 214 and the guide track, it can ensure the limiting support of the top plate 209 without hindering the normal rotation. At the same time, it can convert the sliding friction during the rotation into rolling friction, reduce the wear caused by the rotation, avoid jamming, and ensure that the rotation adjustment contact point of the moving conductive rod 216 can be stably realized. In this way, the design effect of uniform ablation of the moving and stationary contacts can be properly realized, and the overall service life of the equipment can be extended.

[0051] Example 3: Reference Figure 1 , Figure 12 and Figure 13 The disconnect switch 30 includes a breaking shaft 301, an operating handle 302 is fixedly connected to one end of the breaking shaft 301, an mounting block 304 is mounted on the operating handle 302 and the breaking shaft 301, a shaft rod 309 is fixedly connected to the front end of the mounting block 304, branch shafts 307 are symmetrically distributed on both sides of the mounting block 304, guide rods 308 are fixedly connected to the branch shafts 307, and oblique openings 303 are symmetrically opened on both sides of the operating handle 302.

[0052] In this embodiment of the invention, the operator manually opens the circuit breaker by operating the operating handle 302 using an operating rod. Typically, the operating rod is engaged on the inclined slot 303, and opening or closing is achieved by pulling. However, the circuit breaker's high position makes alignment difficult. The guide rod 308 design allows the operator to more intuitively identify the position. Simply placing the operating rod on the guide rod 308, which features an arc structure, allows the operating rod to slide along its outer wall, thus aligning it with the inclined slot 303. This eliminates the need for repeated adjustments to the operating rod's position at a lower location, reducing alignment difficulty and improving the efficiency of the opening and closing operations. The mounting block 304 is fixed to the connection between the operating handle 302 and the disconnecting shaft 301 with fasteners, without affecting the normal rotation of the disconnecting shaft 301. The symmetrically arranged two sets of guide rods 308 can accommodate different operating angles, ensuring smooth guidance whether approaching from the left or right, adapting to different on-site working space conditions. The disconnect shaft 301 is the main shaft of the disconnect switch 30. The rotation of the operating handle 302 drives the disconnect shaft 301 to rotate, thereby realizing the functions of opening and closing the switch. The shaft 309 is used to fix the mounting block 304 to the operating handle 302.

[0053] A rotating block 305 is rotatably connected to the shaft 309, and a blade 306 is fixedly connected to the rotating block 305. Reflective stickers are affixed to the outer walls of the blade 306, the branch shaft 307, and the guide rod 308.

[0054] In this embodiment of the invention, the rotating block 305 can rotate freely on the shaft 309 with the wind. When there is wind, the airflow will blow the blades 306, causing the rotating block 305 to rotate continuously. The reflective stickers on the outer walls of the blades 306, branch shaft 307, and guide rod 308 can reflect significant light at night or in dimly lit outdoor environments, making it easy for operators to quickly locate the position of the operating handle 302, further improving the operational efficiency during emergency nighttime operations. During the day, the rotation of the blades 306 causes the reflective stickers and other reflective stickers to scatter light, preventing birds from perching on the poles of the circuit breaker equipment, reducing the safety hazards caused by bird nesting, and lowering the probability of short circuits caused by bird activity. No additional bird-repelling device is needed; while achieving the positioning assistance function, it also provides bird-repelling protection, further improving the overall operational stability of the equipment.

[0055] The specific implementation process of this invention is as follows: I. Closing Operation Process: The operating spindle 101 drives the push rod 403 upward. The push rod 403 first compresses the sliding sleeve 401, compressing the external spring 402, forming the first-stage buffer against the closing impact. Simultaneously, the push rod 403 can slide relative to the bottom of the pull rod 40, further dissipating the impact kinetic energy, forming the second-stage buffer to protect the internal components of the vacuum interrupter 201. The moving conductive rod 216 continues to move upward, causing the moving contact 217 to contact the stationary contact 205. At this time: The first buffer assembly, consisting of buffer sleeve 215, buffer shaft 219, and buffer spring 220, begins to work: the fixed disk 218 moves upward with the conductive rod 216, and the buffer shaft 219 compresses the buffer spring 220 inside the buffer sleeve 215, absorbing part of the impact kinetic energy.

[0056] When the buffer spring 220 is compressed to its limit, the remaining impact force is transmitted through the insulating plate 206 to the second buffer assembly shock absorber sleeve 207 and the irregular spring 211. Multiple umbrella-shaped protrusions on the shock absorber sleeve 207 deform elastically in sequence, while the conical irregular spring 211 is compressed, absorbing the remaining kinetic energy in stages and effectively suppressing the repeated bouncing of the moving contact 217 after it is closed.

[0057] Once the circuit is closed and the impact kinetic energy is completely absorbed, the moving and stationary contacts remain stably closed. Current flows through the stationary conductive rod 204, stationary contact 205, moving contact 217, and moving conductive rod 216 to form a circuit. The helical cuts on the contact surface generate a longitudinal magnetic field when energized, helping to extinguish the arc and reduce ablation.

[0058] Synchronous operation process when the moving conductive rod 216 rotates: If the moving conductive rod 216 is passively rotated due to design requirements, the moving conductive rod 216 drives the fixed disk 218 to rotate through the bolt hole 221. The fixed disk 218 moves the buffer sleeve 215 through the buffer shaft 219, causing the insulating plate 206 to rotate synchronously along the stationary conductive rod 204. The shock-absorbing sleeve 207 and its top plate 209 rotate accordingly. The extension head 213 and the ball 214 on the top plate 209 roll in the circular track groove 222 of the top block 203, converting sliding friction into rolling friction, ensuring smooth and unimpeded rotation, while not affecting the buffering function.

[0059] Operating assistance process for disconnector switch 30: When operators use the operating pole for manual opening and closing, the pole can be placed on guide rod 308. The arc-shaped structure of guide rod 308 guides the pole to automatically slide towards the angled opening 303 of operating handle 302 and engage, reducing the difficulty of positioning at height. Reflective stickers on the outer walls of blade 306, branch shaft 307, and guide rod 308 reflect light at night or in dim environments, helping operators to quickly locate the switch.

[0060] When there is wind, blade 306 drives rotating block 305 to rotate, and reflective stickers scatter light, driving away birds and reducing the risk of nesting and short circuits.

[0061] The above embodiments are merely exemplary models of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Various modifications or equivalent substitutions can be made to the present invention within its spirit and scope of protection. Such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

[0062] In the description of this invention, it should be noted that the terms "inner," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the appended circle, or the orientation or positional relationship in which the product of this invention is conventionally placed during use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, these terms indicating orientation or positional relationships should not be construed as limitations on the invention.

[0063] In the description of this invention, it should be further noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, these terms can refer to a fixed connection, a detachable connection, or an integral connection between elements; they can also refer to a mechanical connection or an electrical connection; or they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

Claims

1. A primary and secondary integrated outdoor pole-mounted vacuum circuit breaker device, comprising a mechanism box (10), a circuit breaker body (20), and a disconnecting switch (30), characterized in that: The circuit breaker body (20) is provided with a vacuum interrupter (201) inside. The vacuum interrupter (201) is provided with a static conductive rod (204) and a moving conductive rod (216) inside. A top block (203) is fixedly connected to the top of the inner wall of the vacuum interrupter (201). An insulating plate (206) is slidably connected to the stationary conductive rod (204), and the insulating plate (206) rotates relative to the axis of the stationary conductive rod (204). A fixed disk (218) is fixedly connected to the moving conductive rod (216). A first buffer assembly is provided between the fixed disk (218) and the insulating plate (206), and a second buffer assembly is provided between the insulating plate (206) and the top block (203). The second buffer assembly includes a shock-absorbing sleeve (207), which is an integrally molded elastic rubber part. The body of the shock-absorbing sleeve (207) is provided with at least three coaxially distributed umbrella-shaped protrusions in sequence along the axial direction. Adjacent umbrella-shaped protrusions are connected by a neck with a reduced diameter. The top and bottom of the shock-absorbing sleeve (207) are respectively equipped with a top plate (209) and a bottom plate (208). The top plate (209) is slidably connected to the top block (203), and the bottom of the bottom plate (208) is fixedly connected to the insulating plate (206). The top plate (209) has a positioning shaft (210) on the side facing the inside of the shock-absorbing sleeve (207), and a shaped spring (211) is fixedly assembled between the top plate (209) and the bottom plate (208). The irregular spring (211) has a tapered structure that is narrow at the top and wide at the bottom, and the positioning shaft (210) is tapered and adapted to the narrow end of the irregular spring (211).

2. The primary and secondary integrated outdoor pole-mounted vacuum circuit breaker device according to claim 1, characterized in that: There are multiple first buffer components and multiple second buffer components, and the multiple first buffer components and multiple second buffer components are distributed along a circular array.

3. The primary and secondary integrated outdoor pole-mounted vacuum circuit breaker device according to claim 2, characterized in that: The first buffer assembly includes a buffer sleeve (215) and a buffer shaft (219). The buffer sleeve (215) is fixedly connected to the bottom of the insulating plate (206), and the buffer shaft (219) is fixedly connected to the top of the fixed plate (218). The buffer shaft (219) is slidably connected inside the buffer sleeve (215). A buffer spring (220) for buffering and shock absorption is installed inside the buffer sleeve (215).

4. The primary and secondary integrated outdoor pole-mounted vacuum circuit breaker device according to claim 1, characterized in that: The umbrella-shaped protrusions are ellipsoidal or drum-shaped structures, and the outer diameters of each umbrella-shaped protrusion can be set to be the same or different.

5. The primary and secondary integrated outdoor pole-mounted vacuum circuit breaker device according to claim 1, characterized in that: The top plate (209) is provided with an extension head (213) at the top. The outer wall of the extension head (213) is provided with a plurality of balls (214) at equal intervals. The top block (203) is provided with a track groove (222). The extension head (213) is installed in the track groove (222). The track groove (222) is formed with a guide track that is compatible with the balls (214).

6. The primary and secondary integrated outdoor pole-mounted vacuum circuit breaker device according to claim 1, characterized in that: The disconnect switch (30) includes a breaking shaft (301), one end of which is fixedly connected to an operating handle (302). An mounting block (304) is installed on the operating handle (302) and the breaking shaft (301). A shaft (309) is fixedly connected to the front end of the mounting block (304). Branch shafts (307) are symmetrically distributed on both sides of the mounting block (304). A guide rod (308) is fixedly connected to the branch shaft (307). Slanted openings (303) are symmetrically opened on both sides of the operating handle (302). A rotating block (305) is rotatably connected to the shaft (309), and a blade (306) is fixedly connected to the rotating block (305). Reflective stickers are affixed to the outer walls of the blade (306), branch shaft (307), and guide rod (308).

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