A vacuum circuit breaker on a pole

Abstract

The application discloses a pole-mounted vacuum circuit breaker and belongs to the technical field of vacuum circuit breakers, which comprises a mechanism box, a plurality of pole columns installed on the mechanism box, insulating pull rods installed on the pole columns, the insulating pull rods slidingly penetrating the mechanism box, a plurality of guide columns installed on the mechanism box, the guide columns corresponding to the insulating pull rods one by one, the guide columns slidingly sleeving the insulating pull rods, guide sliding grooves being formed in the guide columns and used for slidingly cooperating with the insulating pull rods, first air bags being fixedly connected to the insulating pull rods, a driving plate penetrating the mechanism box, the guide columns slidingly penetrating the driving plate, driving sliding grooves being formed in the driving plate and used for slidingly cooperating with the guide columns, second air bags being fixedly connected to the guide columns, the second air bags being communicated with the first air bags, and driving assemblies being arranged on the mechanism box and used for driving the driving plate to move. The application has the effect of reducing the structural wear of the vacuum circuit breaker.

Description

Technical Field

[0001] This application relates to the field of vacuum circuit breaker technology, and in particular to a pole-mounted vacuum circuit breaker. Background Technology

[0002] Pole-mounted circuit breakers are circuit breakers installed and operated on utility poles. Significant progress has been made in the research and manufacturing technology of various circuit breakers. Vacuum circuit breakers are no longer limited to medium-voltage power grids but are developing towards high voltage and large capacity. Sulfur hexafluoride circuit breakers have many advantages, such as strong breaking capacity, high continuous breaking capacity, frequent operation, low operating noise, and no fire hazard, making them an excellent oil-free device.

[0003] In related technologies, Chinese utility model patent with announcement number CN201289816Y discloses an outdoor high-voltage permanent magnet vacuum circuit breaker. The permanent magnet operating mechanism includes a drive rod arranged in a horizontal direction. The end of the drive rod is provided with an oblong hole extending in a vertical direction. The end of the drive rod is rotatably connected to the drive arm through the limiting hole. The drive spindle hole is an oblong hole extending in a vertical direction. The other end of the drive arm is connected to the transmission spindle through a circular shaft pin.

[0004] Regarding the aforementioned technologies, the inventors believe that when operators perform opening and closing operations, the drive arm drives the main shaft to move. The main shaft controls the direction of movement through the limit post and the oblong hole. The inner walls of the limit post and the oblong hole are prone to wear after long-term use, which makes the movement of the main shaft unstable and thus affects the service life of the vacuum circuit breaker. Summary of the Invention

[0005] To reduce structural wear of vacuum circuit breakers, this application provides a pole-mounted vacuum circuit breaker.

[0006] The pole-mounted vacuum circuit breaker provided in this application adopts the following technical solution: A pole-mounted vacuum circuit breaker includes a mechanism box and multiple poles mounted on the mechanism box. Insulating rods are mounted on the poles and slidably pass through the mechanism box. Multiple guide posts are mounted on the mechanism box, each corresponding to one of the insulating rods. Each guide post is slidably sleeved on the insulating rod and has a guide groove for sliding cooperation with the insulating rod. A first airbag is fixedly connected to the insulating rod, with the end of the first airbag away from the insulating rod fixedly connected to the inner end face of the guide groove. A drive plate passes through the mechanism box, with the ends of the guide posts away from the insulating rods slidably passing through the drive plate. The drive plate has a drive groove for sliding cooperation with the guide posts. A second airbag is fixedly connected to each guide post, with the end of the second airbag away from the guide post fixedly connected to the inner end face of the drive groove. The second airbag communicates with the first airbag. A drive assembly for driving the drive plate is provided on the mechanism box.

[0007] By adopting the above technical solution, the operator uses the drive assembly to move the drive plate. The movement of the drive plate causes the inner wall of the drive slide to compress the second airbag. The compression and deformation of the second airbag causes the first airbag to expand and deform. The expansion and deformation of the first airbag causes the insulating pull rod to move upward, thereby closing the vacuum circuit breaker. The operator uses the drive assembly to move the drive plate. The movement of the drive plate causes the second airbag to expand and deform. The expansion and deformation of the second airbag causes the first airbag to contract. The contraction of the first airbag causes the insulating pull rod to move downward, thereby opening the vacuum circuit breaker. By using gas flow transmission, the structural wear of the vacuum circuit breaker is reduced, and the service life of the vacuum circuit breaker is improved.

[0008] Preferably, the drive assembly includes a drive rod rotatably mounted inside the mechanism housing, a drive gear fixedly sleeved on the drive rod, a drive plate having teeth that mesh with the drive gear, a starter plate being mounted on the end of the drive rod extending out of the mechanism housing, and a fixing assembly for fixing the position of the drive plate being provided on the mechanism housing.

[0009] By adopting the above technical solution, the operator rotates the starter plate, which in turn drives the drive rod to rotate, which in turn drives the drive gear to rotate, and the drive gear to move the drive plate, making it convenient for the operator to open and close the circuit breaker. Then, the operator uses the fixing components to fix the drive plate, thereby preventing the insulating pull rod from moving.

[0010] Preferably, the fixing component includes a fixing ratchet plate passing through the mechanism box and a fixing spring fixedly connected to the fixing ratchet plate. The mechanism box has a fixing groove for sliding engagement with the fixing ratchet plate. The end of the fixing spring away from the fixing ratchet plate is fixedly connected to the inner end face of the fixing groove. A first movable plate is fixedly connected to the fixing ratchet plate, and the mechanism box has a first movable groove for sliding engagement with the first movable plate.

[0011] By adopting the above technical solution, the operator rotates the starter plate to move the drive plate. The movement of the drive plate causes the ratchet of the drive plate to slide on the back of the ratchet plate. When the circuit breaker is closed, the ratchet of the drive plate engages with the fixed ratchet plate, thereby fixing the drive plate. The operator moves the first moving plate, which in turn moves the fixed ratchet plate, thereby releasing the fixed state of the drive plate and making it convenient for the operator to operate.

[0012] Preferably, a push rod is provided on the mechanism box, a first connecting rod is provided at the end of the guide post, the first connecting rod passes through the guide post and is rotatably connected to the insulating pull rod, a first waist-shaped groove is provided on the guide post for sliding engagement with the push rod, a first support rod is rotatably connected to the end of the first connecting rod extending out of the guide post, the end of the first support rod away from the guide post is hinged to the push rod, a second connecting rod is slidably provided at the bottom of the guide rod, the second connecting rod is rotatably connected to the guide post, a second waist-shaped groove is provided on the guide post for sliding engagement with the second connecting rod, a second support rod is rotatably connected to the end of the second connecting rod extending out of the guide post, the end of the second support rod away from the guide post is hinged to the push rod, and a control component for driving the push rod to move is provided on the mechanism box.

[0013] By adopting the above technical solution, the operator rotates the starter plate to move the insulating pull rod upward, thereby closing the circuit breaker. Then, the operator uses the control component to move the push rod. The movement of the push rod causes the first connecting rod and the second connecting rod to move away from each other. The first connecting rod lifts the insulating pull rod through the first support rod, thereby reducing the pressure on the first airbag and improving the stability of the first airbag. The second connecting rod lifts the push rod through the second support rod, thereby preventing the push rod from bending under the action of the first support rod and improving the stability of the push rod.

[0014] Preferably, the control component includes a control rod rotatably mounted inside the mechanism housing, a control gear fixedly sleeved on the control rod, a push rod having teeth that mesh with the control gear, a rotating plate mounted on the end of the control rod extending out of the mechanism housing, and a locking component for fixing the position of the push rod on the mechanism housing.

[0015] By adopting the above technical solution, the operator uses a rotating plate to drive the control rod to rotate, the control rod to rotate, the control gear to rotate, and the push rod to move. Then, the operator uses a locking assembly to fix the push rod, thereby providing support for the insulated pull rod and making it convenient for the operator to use.

[0016] Preferably, the locking assembly includes a locking ratchet plate passing through the mechanism box and a locking spring fixedly connected to the locking ratchet plate. The mechanism box has a locking groove for sliding engagement with the locking ratchet plate. The end of the locking spring away from the locking ratchet plate is fixedly connected to the inner end face of the locking groove. A second movable plate is fixedly connected to the locking ratchet plate, and the mechanism box has a second movable groove for sliding engagement with the second movable plate.

[0017] By adopting the above technical solution, the operator can drive the push rod to move by rotating the plate. The movement of the push rod causes the ratchet of the push rod to slide on the back of the teeth of the locking ratchet plate. When the first support rod lifts the insulating pull rod, the push rod is fixed under the action of the locking ratchet plate. The operator can then move the locking ratchet plate by moving the second moving plate, separating the locking ratchet plate from the push rod, thereby releasing the fixed state of the push rod and making it convenient for the operator to use.

[0018] Preferably, a reset rod is provided on the mechanism box, and the reset rod passes through the drive plate and the push rod in sequence. The drive plate has a first reset groove for sliding cooperation with the reset rod. A first reset spring is fixedly connected to the reset rod, and the end of the first reset spring away from the reset rod is fixedly connected to the inner end face of the first reset groove. A second reset groove is provided on the push rod for sliding cooperation with the reset rod. A second reset spring is fixedly connected to the reset rod, and the end of the second reset spring away from the reset rod is fixedly connected to the inner end face of the second reset groove.

[0019] By adopting the above technical solution, the operator moves the drive plate by starting the plate. At this time, the first return spring is in a compressed state. The operator separates the fixed ratchet plate from the drive plate by moving the first moving plate. The drive plate is then reset under the action of the first return spring. The operator moves the push rod by rotating the plate. At this time, the second return spring is in a compressed state. The operator separates the locking ratchet plate from the push rod by moving the second moving plate. The push rod is then reset under the action of the second return spring. This allows for convenient repeated use by the operator.

[0020] Preferably, a transmission plate is slidably mounted on the mechanism box, a first movable plate is mounted on the transmission plate, and a first transmission groove is provided on the transmission plate for sliding cooperation with the first movable plate. A second movable plate is mounted on the transmission plate, and a second transmission groove is provided on the transmission plate for sliding cooperation with the second movable plate. A third movable plate is fixedly connected to the transmission plate, and a third movable groove is provided on the mechanism box. The third movable plate extends out of the mechanism box and slides in cooperation with the inner wall of the third movable groove.

[0021] By adopting the above technical solution, the operator moves the third moving plate, which in turn moves the transmission plate, which in turn moves the first and second moving plates, thereby simultaneously releasing the fixed state of the drive plate and the push rod, making it convenient for the operator to use. The first moving plate slides in the first transmission groove, and the second moving plate slides in the second transmission groove, so that the first and second moving plates can move independently without interfering with each other, making it convenient for the operator to unlock the drive plate and the push rod separately.

[0022] Preferably, a linkage plate is provided on the mechanism box, and the linkage plate is sequentially provided on the drive plate and the push rod. The drive plate has a first linkage groove for sliding cooperation with the linkage plate, and the push rod has a second linkage groove for sliding cooperation with the linkage plate. The mechanism box is provided with a push assembly for pushing the linkage plate.

[0023] By adopting the above technical solution, the arrangement of the first and second linkage slots ensures that the movement of the drive plate and the push rod does not interfere with each other, facilitating the operator to move the drive plate and the push rod independently. When the first or second airbag of a certain pole is damaged, the operator uses the push assembly to drive the linkage plate to move. The movement of the linkage plate drives the drive plate and the push rod to move simultaneously, causing the insulating pull rod to move at the same time, facilitating the operator to close the circuit breaker. The undamaged first and second airbags, together with the first support rod, drive the insulating pull rod to move, reducing the pressure on the first support rod to drive the insulating pull rod alone, thereby reducing the wear of the first support rod and improving the service life of the vacuum circuit breaker.

[0024] Preferably, the pushing assembly includes a push block slidably passing through the mechanism box, a hinge rod hinged to the push block, and a push plate slidably passing through the mechanism box. The push block is fixedly connected to the linkage plate. The mechanism box has a pushing groove for sliding cooperation with the push plate. A ball bearing is installed on the inner wall of the pushing groove. The ball bearing rolls with the push plate. A dustproof plate is fixedly connected to the end of the push plate that protrudes from the mechanism box. A pull ring is fixedly connected to the dustproof plate.

[0025] By adopting the above technical solution, the operator pulls the pull ring, which drives the push plate to move via the dustproof plate. The push rod moves, which in turn moves the hinge rod. The hinge rod moves the push block, which in turn moves the linkage plate, thus facilitating the operator's opening and closing of the brake. The ball bearings reduce the friction on the inner wall of the push groove, reduce the wear of the push plate, and improve the smoothness of the push plate's movement. The dustproof plate prevents dust and impurities from entering the push groove, prevents the hinge rod from being corroded, and improves the stability of the push rod.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The operator uses the drive assembly to move the drive plate. The movement of the drive plate causes the inner wall of the drive slide to compress the second airbag. The compression and deformation of the second airbag causes the first airbag to expand and deform. The expansion and deformation of the first airbag causes the insulating pull rod to move upward, thereby closing the vacuum circuit breaker. The operator uses the drive assembly to move the drive plate. The movement of the drive plate causes the second airbag to expand and deform. The expansion and deformation of the second airbag causes the first airbag to contract. The contraction of the first airbag causes the insulating pull rod to move downward, thereby opening the vacuum circuit breaker. The use of gas flow transmission reduces the structural wear of the vacuum circuit breaker and improves its service life. 2. The operator rotates the starter plate to move the insulating pull rod upward, thereby closing the circuit breaker. Then, the operator uses the control components to move the push rod. The movement of the push rod causes the first connecting rod and the second connecting rod to move away from each other. The first connecting rod lifts the insulating pull rod through the first support rod, thereby reducing the pressure on the first airbag and improving the stability of the first airbag. The second connecting rod lifts the push rod through the second support rod, thereby preventing the push rod from bending under the action of the first support rod and improving the stability of the push rod. 3. The design of the first and second linkage slots ensures that the movement of the drive plate and the push rod does not interfere with each other, allowing the operator to move the drive plate and the push rod independently. When the first or second airbag of a pole is damaged, the operator uses the push assembly to move the linkage plate. The movement of the linkage plate causes the drive plate and the push rod to move simultaneously, allowing the insulating pull rod to move at the same time, facilitating the operator to close the circuit breaker. The undamaged first and second airbags, together with the first support rod, drive the insulating pull rod to move, reducing the pressure on the first support rod to move the insulating pull rod independently, thereby reducing the wear of the first support rod and improving the service life of the vacuum circuit breaker. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a pole-mounted vacuum circuit breaker according to an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the internal structure of a pole-mounted vacuum circuit breaker according to an embodiment of this application.

[0029] Figure 3 This is a schematic diagram of the internal structure of the guide column according to an embodiment of this application.

[0030] Figure 4 yes Figure 2 Enlarged diagram of point A in the middle.

[0031] Figure 5 This is a schematic diagram of the internal structure of the transmission plate according to an embodiment of this application.

[0032] Figure 6 yes Figure 2 Enlarged diagram of point B in the middle.

[0033] Explanation of reference numerals in the attached figures: 1. Mechanism box; 11. Pole post; 12. Insulating pull rod; 13. Guide post; 131. Guide groove; 132. First airbag; 133. First connecting rod; 134. First waist-shaped groove; 135. First support rod; 136. Second connecting rod; 137. Second waist-shaped groove; 138. Second support rod; 14. Drive plate; 141. Drive groove; 142. Second airbag; 15. Push rod; 16. Reset rod; 161. First reset groove; 162. First reset spring; 163. Second reset groove; 164. Second reset spring; 17. Transmission plate; 171. First transmission groove; 172. Second transmission groove; 173. Third moving plate; 174. Third moving groove; 18. 1. Linkage plate; 181. First linkage groove; 182. Second linkage groove; 2. Drive assembly; 21. Drive rod; 22. Drive gear; 23. Starter plate; 3. Fixing assembly; 31. Fixing ratchet plate; 32. Fixing spring; 33. Fixing slide; 34. First moving plate; 35. First moving slide; 4. Control assembly; 41. Control rod; 42. Control gear; 43. Rotating plate; 5. Locking assembly; 51. Locking ratchet plate; 52. Locking spring; 53. Locking slide; 54. Second moving plate; 55. Second moving slide; 6. Pushing assembly; 61. Push block; 62. Hinge rod; 63. Push plate; 64. Push groove; 65. Ball bearing; 66. Dustproof plate; 67. Pull ring. Detailed Implementation

[0034] The present application will be further described in detail below with reference to the accompanying drawings.

[0035] This application discloses a pole-mounted vacuum circuit breaker. (Refer to...) Figure 1 , Figure 2 The vacuum circuit breaker includes a mechanism box 1, which is a rectangular block and is horizontally arranged. Three pole posts 11 are vertically arranged and evenly distributed along the length of the mechanism box 1. The pole posts 11 are fixedly connected to the mechanism box 1, and each pole post 11 is equipped with an insulating pull rod 12.

[0036] Reference Figure 2 , Figure 3 The insulating rod 12 is vertically arranged and slides through the pole post 11. The end of the insulating rod 12 that extends out of the pole post 11 enters the mechanism box 1. Guide posts 13 are provided on the insulating rod 12. Three guide posts 13 are vertically arranged, each corresponding to one of the insulating rods 12. Each guide post 13 is fitted onto the insulating rod 12 and has a guide groove 131 for sliding cooperation with the insulating rod 12. The guide posts 13 are located inside the mechanism box 1, which contains multiple cavities to accommodate them. Each cavity in the mechanism box 1 corresponds to one of the guide posts 13, and the guide posts 13 are fixedly connected to the inner walls of the cavities in the mechanism box 1.

[0037] Reference Figure 2 , Figure 3 An insulating pull rod 12 is provided with a first airbag 132, which is vertically arranged and located within a guide groove 131. One end of the first airbag 132 is fixedly connected to the insulating pull rod 12, and the other end is fixedly connected to the inner end face of the guide groove 131. A drive plate 14 is provided inside the mechanism box 1. The drive plate 14 is rectangular and horizontally arranged. The drive plate 14 slides through the mechanism box 1, and a drive groove 141 is provided on the drive plate 14. The inner wall of the drive groove 141 slides and engages with the outer wall of the guide post 13.

[0038] Reference Figure 2 , Figure 3 A second airbag 142 is provided on the guide post 13. The second airbag 142 is horizontally positioned and is located in the drive slide groove 141. One end of the second airbag 142 is fixedly connected to the guide post 13, and the other end of the second airbag 142 is fixedly connected to the inner end face of the drive slide groove 141.

[0039] Reference Figure 1 , Figure 4 The mechanism housing 1 is equipped with a drive assembly 2 for moving the drive plate 14. The drive assembly 2 includes a drive rod 21 and a drive gear 22. The drive rod 21 is horizontally positioned and passes through the mechanism housing 1, and is rotatably connected to the mechanism housing 1. A starter plate 23 is installed on the end of the drive rod 21 that extends out of the mechanism housing 1. The drive gear 22 is vertically positioned and is sleeved on the drive rod 21, and is fixedly connected to the drive rod 21. The drive plate 14 has teeth, and the drive gear 22 meshes with the teeth on the drive plate 14.

[0040] The operator rotates the starter plate 23, which drives the drive gear 22 to rotate via the drive rod 21. The drive gear 22 drives the second airbag 142 to compress via the drive plate 14. The compression of the second airbag 142 causes the first airbag 132 to expand and deform. The expansion and deformation of the first airbag 132 causes the insulating pull rod 12 to move, thereby realizing the closing of the vacuum circuit breaker. The operator uses gas flow transmission to reduce the structural wear of the vacuum circuit breaker and improve the service life of the vacuum circuit breaker.

[0041] Reference Figure 5 The mechanism housing 1 is provided with a fixing component 3 for fixing the position of the drive plate 14. The fixing component 3 includes a fixing ratchet plate 31 and a fixing spring 32. The fixing ratchet plate 31 is horizontally arranged and passes through the mechanism housing 1. The drive plate 14 is provided with ratchet teeth, and the fixing ratchet plate 31 engages with the teeth on the drive plate 14.

[0042] Reference Figure 5 The mechanism box 1 is provided with a fixed slide groove 33, and the inner wall of the fixed slide groove 33 slides and engages with the outer wall of the fixed ratchet plate 31. The fixed spring 32 is vertically arranged and is set in the fixed slide groove 33. One end of the fixed spring 32 is fixedly connected to the fixed ratchet plate 31, and the other end of the fixed spring 32 is fixedly connected to the inner end face of the fixed slide groove 33.

[0043] Reference Figure 2 , Figure 5 A first movable plate 34 is provided on the fixed ratchet plate 31. The first movable plate 34 is horizontally positioned and slides through the mechanism box 1. The first movable plate 34 passes through the mechanism box 1 and is fixedly connected to the fixed ratchet plate 31. A first movable groove 35 is provided on the inner wall of the fixed groove 33. The inner wall of the first movable groove 35 slides and engages with the outer wall of the first movable plate 34. The inner wall of the first movable groove 35 is connected to the outer wall of the mechanism box 1.

[0044] The operator moves the drive plate 14 by starting the starter plate 23. The ratchet of the drive plate 14 slides on the back of the teeth of the fixed ratchet plate 31. The fixed ratchet plate 31 engages with the ratchet of the drive plate 14 under the action of the fixed spring 32, thereby fixing the drive plate 14. The operator moves the first moving plate 34, which moves and drives the fixed ratchet plate 31 to move away from the drive plate 14, thereby releasing the fixed state of the drive plate 14.

[0045] Reference Figure 2 , Figure 3A push rod 15 is installed inside the mechanism housing 1. The push rod 15 is horizontally positioned and slides through the mechanism housing 1. A first support rod 135 is installed on the upper surface of the push rod 15, and a second support rod 138 is installed on the lower surface of the push rod 15. Multiple first support rods 135 are provided and are evenly arranged along the length of the push rod 15. Each first support rod 135 corresponds to a guide post 13 and is hinged to the push rod 15. A first connecting rod 133 is installed on the end of the first support rod 135 away from the push rod 15.

[0046] Reference Figure 3 The first connecting rod 133 is horizontally positioned and passes through the first support rod 135, rotatably connected to it. The end of the first connecting rod 133 extending from the first support rod 135 passes through the guide post 13, and is rotatably connected to the insulating pull rod 12. The guide post 13 has a first waist-shaped groove 134, which is vertically oriented, and its inner wall slides against the outer circumferential surface of the first connecting rod 133.

[0047] Reference Figure 3 Multiple second support rods 138 are provided, each corresponding to a first support rod 135. The second support rods 138 and 135 are symmetrically arranged about the axis of the push rod 15. Each second support rod 138 is hinged to the push rod 15. A second connecting rod 136 is provided on the end of each second support rod 138 away from the push rod 15. The second connecting rod 136 is horizontally positioned and rotatably connected to the second support rods 138. The second connecting rod 136 slides through the guide post 13 and is rotatably connected to the guide post 13. A second waist-shaped groove 137 is provided on the guide post 13. The second waist-shaped groove 137 is vertically formed, and its inner wall slides in engagement with the outer circumferential surface of the second connecting rod 136.

[0048] Reference Figure 2 , Figure 4 The mechanism housing 1 is equipped with a control assembly 4 for driving the push rod 15 to move. The control assembly 4 includes a control rod 41 and a control gear 42. The control rod 41 is horizontally positioned and passes through the mechanism housing 1, and is rotatably connected to the mechanism housing 1. A rotating plate 43 is installed on the end of the control rod 41 that extends out of the mechanism housing 1. The control gear 42 is vertically positioned and is mounted on the control rod 41. The control gear 42 is sleeved on the control rod 41 and is fixedly connected to the control rod 41. The push rod 15 has teeth, and the control gear 42 meshes with the teeth on the push rod 15.

[0049] The operator moves the rotating plate 43, which drives the control gear 42 to rotate via the control lever 41. The control gear 42 drives the first support rod 135 and the second support rod 138 to rotate via the push rod 15. The first support rod 135 drives the insulating pull rod 12 to move via the first connecting rod 133. The insulating pull rod 12 is lifted by the first support rod 135, thereby reducing the pressure on the first airbag 132 and improving the stability of the first airbag 132. The rotation of the second support rod 138 causes the second connecting rod 136 to abut against the inner bottom surface of the second waist-shaped groove 137, so that the push rod 15 is lifted by the second support rod 138, thereby preventing the push rod 15 from bending under the action of the first support rod 135 and improving the stability of the push rod 15.

[0050] Reference Figure 5 The mechanism housing 1 is provided with a locking assembly 5 for fixing the position of the push rod 15. The locking assembly 5 includes a locking ratchet plate 51 and a locking spring 52. The locking ratchet plate 51 is horizontally arranged and passes through the mechanism housing 1. The push rod 15 is provided with ratchet teeth, and the locking ratchet plate 51 engages with the teeth on the push rod 15.

[0051] Reference Figure 5 The mechanism box 1 is provided with a locking groove 53, and the inner wall of the locking groove 53 slides and engages with the outer wall of the locking ratchet plate 51. The locking spring 52 is vertically arranged and is located in the locking groove 53. One end of the locking spring 52 is fixedly connected to the locking ratchet plate 51, and the other end of the locking spring 52 is fixedly connected to the inner end face of the locking groove 53.

[0052] Reference Figure 2 , Figure 5 A second movable plate 54 is provided on the locking ratchet plate 51. The second movable plate 54 is horizontally positioned and slides through the mechanism box 1. The second movable plate 54 passes through the mechanism box 1 and is fixedly connected to the locking ratchet plate 51. A second movable groove 55 is provided on the inner wall of the locking groove 53. The inner wall of the second movable groove 55 slides and engages with the outer wall of the second movable plate 54. The inner wall of the second movable groove 55 is connected to the outer wall of the mechanism box 1.

[0053] The operator moves the push rod 15 by rotating the plate 43. The ratchet of the push rod 15 slides on the back of the teeth of the locking ratchet plate 51. Under the action of the locking spring 52, the locking ratchet plate 51 engages with the ratchet of the push rod 15, thereby fixing the push rod 15. The operator moves the second moving plate 54, which moves and drives the locking ratchet plate 51 to move away from the push rod 15, thereby releasing the fixed state of the push rod 15.

[0054] Reference Figure 2 , Figure 5A transmission plate 17 is installed inside the mechanism housing 1. The transmission plate 17 is vertically arranged and slides through the mechanism housing 1. One end of the transmission plate 17 is sleeved on the first moving plate 34, and the other end of the transmission plate 17 is sleeved on the second moving plate 54. A first transmission groove 171 is formed on the transmission plate 17. The first transmission groove 171 is vertically formed, and the inner wall of the first transmission groove 171 slides and engages with the outer wall of the first moving plate 34.

[0055] Reference Figure 5 A second transmission groove 172 is provided on the transmission plate 17. The second transmission groove 172 is vertically opened, and its inner wall slides in engagement with the outer wall of the second moving plate 54. A third moving plate 173 is provided at the bottom end of the transmission plate 17. The third moving plate 173 is horizontally set and passes through the mechanism box 1. The third moving plate 173 is fixedly connected to the transmission plate 17. A third moving slide groove 174 is provided on the mechanism box 1. The third moving slide groove 174 is vertically opened, and its inner wall slides in engagement with the outer wall of the third moving plate 173.

[0056] The operator moves the third moving plate 173, which drives the second moving plate 54 and the first moving plate 34 to move via the transmission plate 17, thereby simultaneously releasing the fixed state of the drive plate 14 and the push rod 15, making it convenient for the operator to use. The first moving plate 34 slides in the first transmission groove 171, and the second moving plate 54 slides in the second transmission groove 172, so that the first moving plate 34 and the second moving plate 54 can move independently without interfering with each other, making it convenient for the operator to unlock the drive plate 14 and the push rod 15 separately.

[0057] Reference Figure 2 , Figure 6 A reset rod 16 is installed vertically inside the mechanism housing 1. One end of the reset rod 16 slides through the drive plate 14, and the other end slides through the push rod 15. A first reset groove 161 is provided on the drive plate 14, which is opened along the length of the drive plate 14. The inner wall of the first reset groove 161 slides and engages with the outer wall of the reset rod 16. A first reset spring 162 is provided on the end of the reset rod 16 located in the first reset groove 161. The first reset spring 162 is horizontally arranged, with one end fixedly connected to the reset rod 16 and the other end fixedly connected to the inner end face of the first reset groove 161.

[0058] Reference Figure 6A second reset groove 163 is provided on the push rod 15, which is opened along the length direction of the push rod 15. The inner wall of the second reset groove 163 slides and engages with the outer wall of the reset rod 16. A second reset spring 164 is provided on the end of the reset rod 16 located in the second reset groove 163. The second reset spring 164 is horizontally arranged, with one end fixedly connected to the reset rod 16 and the other end fixedly connected to the inner end face of the second reset groove 163.

[0059] The operator rotates the start plate 23, causing the drive plate 14 to move. The movement of the drive plate 14 causes the first return spring 162 to compress and deform under the action of the return rod 16. The drive plate 14 is fixed under the action of the fixed ratchet plate 31. When the operator moves the first moving plate 34, the drive plate 14 is reset under the action of the first return spring 162. The operator moves the rotating plate 43, causing the push rod 15 to move. The movement of the push rod 15 causes the second return spring 164 to compress and deform under the action of the return rod 16. The push rod 15 is fixed under the action of the locking ratchet plate 51. When the operator moves the second moving plate 54, the push rod 15 is reset under the action of the second return spring 164.

[0060] Reference Figure 2 , Figure 3 The mechanism housing 1 contains a linkage plate 18, which is vertically positioned. One end of the linkage plate 18 slides through the drive plate 14, and the other end slides through the push rod 15. The drive plate 14 has a first linkage groove 181, which extends along its length, and its inner wall slides against the outer wall of the linkage plate 18. The push rod 15 has a second linkage groove 182, which extends along its length, and its inner wall slides against the outer wall of the linkage plate 18.

[0061] Reference Figure 2 The mechanism housing 1 is equipped with a pushing assembly 6 for pushing the linkage plate 18. The pushing assembly 6 includes a push block 61, a hinge rod 62, and a push plate 63. The push block 61 is rectangular and horizontally positioned between the drive plate 14 and the push rod 15. The push block 61 slides through the mechanism housing 1 and is fixedly connected to the linkage rod. The hinge rod 62 is mounted on the push block 61 and is hinged to the push block 61.

[0062] Reference Figure 1 , Figure 2The push plate 63 is vertically mounted and hinged to the end of the hinge rod 62 away from the push block 61. A push groove 64 is provided inside the mechanism housing 1, and the side wall of the push plate 63 slides in engagement with the inner side wall of the push groove 64. A ball bearing 65 is mounted on the push plate 63 and is installed on the inner wall of the push groove 64, rolling in engagement with the side wall of the push plate 63. A dustproof plate 66 is horizontally mounted on the bottom of the push plate 63, with its top surface abutting against the bottom surface of the mechanism housing 1. A pull ring 67 is mounted on the bottom surface of the dustproof plate 66.

[0063] The operator pulls the pull ring 67, which drives the push plate 63 to move via the dustproof plate 66. The push rod 15 drives the push block 61 to move via the hinge rod 62. The push block 61 drives the drive plate 14 and the push rod 15 to move via the linkage plate 18, thus facilitating the operator to close the circuit breaker. The ball bearing 65 reduces the friction on the inner wall of the push groove 64, improving the smoothness of the push plate 63's movement. The dustproof plate 66 prevents dust and impurities from entering the push groove 64, prevents the hinge rod 62 from being corroded, and improves the stability of the push rod.

[0064] The implementation principle of a pole-mounted vacuum circuit breaker according to an embodiment of this application is as follows: the operator rotates the start plate 23, causing the first airbag 132 to move the insulating pull rod 12, thereby closing the vacuum circuit breaker. Then, the operator moves the rotating plate 43, causing the first support rod 135 to lift the insulating pull rod 12, improving the stability of the first airbag 132. The operator moves the third moving plate 173, causing the fixed state of the push rod 15 and the drive plate 14 to be released simultaneously, thereby opening the vacuum circuit breaker. The operator uses gas flow transmission to reduce the structural wear of the vacuum circuit breaker and improve its service life.

[0065] When the first airbag 132 or the second airbag 142 of a certain pole 11 is damaged, the operator pulls the pull ring 67 to move the linkage plate 18. The linkage plate 18 simultaneously drives the first support rod 135 and the first airbag 132 to lift the insulating pull rod 12, so that the three poles 11 of the vacuum circuit breaker close at the same time. The undamaged first airbag 132 and the second airbag 142, together with the first support rod 135, drive the insulating pull rod 12 to move, which reduces the pressure of the first support rod 135 driving the insulating pull rod 12 to move alone, thereby reducing the wear of the first support rod 135 and improving the service life of the vacuum circuit breaker.

[0066] When either the first airbag 132 or the second airbag 142 is damaged, the operator moves the rotating plate 43. The rotating plate 43 moves the insulating pull rod 12 via the first support rod 135, thereby closing the vacuum circuit breaker and allowing the operator to continue using it. The operator moves the second moving plate 54 to release the fixed state of the push rod 15, thereby opening the vacuum circuit breaker.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pole-mounted vacuum circuit breaker, comprising a mechanism box and a plurality of poles mounted on the mechanism box, characterized in that: An insulating pull rod is installed on the pole post, and the insulating pull rod slides through the mechanism box. Multiple guide posts are installed on the mechanism box, each guide post corresponding to one of the insulating pull rods. Each guide post is slidably sleeved on the insulating pull rod, and each guide post has a guide groove for sliding cooperation with the insulating pull rod. A first airbag is fixedly connected to the insulating pull rod, and the end of the first airbag away from the insulating pull rod is fixedly connected to the inner end face of the guide groove. A drive plate passes through the mechanism box, and the ends of the guide posts away from the insulating pull rod slide through the drive plate. The drive plate has a guide groove for sliding cooperation with the guide posts. The drive slide groove is connected to a guide post, and a second airbag is fixedly connected to the guide post. The end of the second airbag away from the guide post is fixedly connected to the inner end face of the drive slide groove. The second airbag communicates with the first airbag. The mechanism box is provided with a drive assembly for driving the drive plate to move. The drive assembly includes a drive rod rotatably installed in the mechanism box and a drive gear fixedly sleeved on the drive rod. The drive plate is provided with teeth that mesh with the drive gear. A starter plate is installed on the end of the drive rod that protrudes from the mechanism box. The mechanism box is provided with a fixing assembly for fixing the position of the drive plate. The fixing assembly includes a fixing ratchet plate passing through the mechanism box and a fixing spring fixedly connected to the fixing ratchet plate. The mechanism box has a fixing groove for sliding engagement with the fixing ratchet plate. The end of the fixing spring away from the fixing ratchet plate is fixedly connected to the inner end face of the fixing groove. A first movable plate is fixedly connected to the fixing ratchet plate, and the mechanism box has a first movable groove for sliding engagement with the first movable plate. A push rod passes through the mechanism box, and a first connecting rod passes through the end of the guide post. The first connecting rod passes through the guide post and is rotatably connected to the insulating pull rod. A useful... A first waist-shaped groove is provided for sliding engagement with the push rod. A first support rod is rotatably connected to the end of the first connecting rod that protrudes from the guide post. The end of the first support rod away from the guide post is hinged to the push rod. A second connecting rod is slidably passed through the bottom of the guide post. The second connecting rod is rotatably connected to the guide post. A second waist-shaped groove is provided on the guide post for sliding engagement with the second connecting rod. A second support rod is rotatably connected to the end of the second connecting rod that protrudes from the guide post. The end of the second support rod away from the guide post is hinged to the push rod. A control component for driving the push rod to move is provided on the mechanism box.

2. The pole-mounted vacuum circuit breaker according to claim 1, characterized in that: The control assembly includes a control rod rotatably mounted inside the mechanism housing, a control gear fixedly sleeved on the control rod, a push rod having teeth that mesh with the control gear, a rotating plate mounted on the end of the control rod extending out of the mechanism housing, and a locking assembly for fixing the position of the push rod on the mechanism housing.

3. A pole-mounted vacuum circuit breaker according to claim 2, characterized in that: The locking assembly includes a locking ratchet plate passing through the mechanism box and a locking spring fixedly connected to the locking ratchet plate. The mechanism box has a locking groove for sliding engagement with the locking ratchet plate. The end of the locking spring away from the locking ratchet plate is fixedly connected to the inner end face of the locking groove. A second movable plate is fixedly connected to the locking ratchet plate, and the mechanism box has a second movable groove for sliding engagement with the second movable plate.

4. A pole-mounted vacuum circuit breaker according to claim 1, characterized in that: A reset rod is provided on the mechanism box. The reset rod passes through the drive plate and the push rod in sequence. The drive plate has a first reset groove for sliding cooperation with the reset rod. A first reset spring is fixedly connected to the reset rod. The end of the first reset spring away from the reset rod is fixedly connected to the inner end face of the first reset groove. A second reset groove is provided on the push rod for sliding cooperation with the reset rod. A second reset spring is fixedly connected to the reset rod. The end of the second reset spring away from the reset rod is fixedly connected to the inner end face of the second reset groove.

5. A pole-mounted vacuum circuit breaker according to claim 3, characterized in that: A transmission plate is slidably mounted on the mechanism box. A first movable plate passes through the transmission plate. A first transmission groove is provided on the transmission plate for sliding cooperation with the first movable plate. A second movable plate passes through the transmission plate. A second transmission groove is provided on the transmission plate for sliding cooperation with the second movable plate. A third movable plate is fixedly connected to the transmission plate. A third movable groove is provided on the mechanism box. The third movable plate passes through the mechanism box and slides through the inner wall of the third movable groove.

6. A pole-mounted vacuum circuit breaker according to claim 1, characterized in that: A linkage plate is provided on the mechanism box, and the linkage plate is sequentially installed on the drive plate and the push rod. The drive plate has a first linkage groove for sliding cooperation with the linkage plate, and the push rod has a second linkage groove for sliding cooperation with the linkage plate. The mechanism box is provided with a push assembly for pushing the linkage plate.

7. A pole-mounted vacuum circuit breaker according to claim 6, characterized in that: The pushing assembly includes a push block slidably passing through the mechanism box, a hinge rod hinged to the push block, and a push plate slidably passing through the mechanism box. The push block is fixedly connected to the linkage plate. The mechanism box has a pushing groove for sliding cooperation with the push plate. A ball bearing is installed on the inner wall of the pushing groove. The ball bearing rolls with the push plate. A dustproof plate is fixedly connected to the end of the push plate that protrudes from the mechanism box. A pull ring is fixedly connected to the dustproof plate.

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