A compact spring operating mechanism and air-insulated ring network cabinet

Abstract

The present invention discloses a compact spring operating mechanism and an air-insulated ring network cabinet with a reasonable layout, reasonable transmission, compact structure and small size. The present invention includes a compact spring operating mechanism, which includes a circuit breaker operating mechanism. The circuit breaker operating mechanism includes a circuit breaker base, a worm gear assembly, an energy storage motor, a gear transmission assembly, an energy storage shaft assembly, two energy storage springs, a closing limit assembly, an opening shaft, an opening spring, an opening limit assembly, a connecting rod assembly and a gear rack assembly. The worm gear assembly is connected to the input shaft of the energy storage motor, the gear transmission assembly is connected to the output shaft of the energy storage motor, one end of the two energy storage springs is respectively connected to the two ends of the energy storage shaft assembly, the other end of the opening spring is connected to the opening shaft, and the connecting rod assembly is sleeved and fixed on the opening shaft. The present invention is applied to the technical field of ring network cabinets.

Description

Technical Field

[0001] The present invention relates to a ring main unit, and in particular to a compact spring operating mechanism and an air-insulated ring main unit. Background Art

[0002] Air-insulated ring main unit (AIS) is an electrical device consisting of a metal enclosure enclosing a cabinet or assembled compartmentalized ring main unit. Its core components include load switches, disconnectors, and circuit breakers. It boasts a simple structure, excellent insulation performance, and environmental friendliness. It is widely used in distribution stations and box-type substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and factories and enterprises.

[0003] Currently, when a circuit breaker mechanism is in operation, a handle or motor is used to rotate the energy storage shaft, causing the energy storage spring to stretch and store energy. After passing the limit position, the spring remains in the stored energy state due to the limit device. When the closing button is pressed, the limit device rotates and no longer limits the position, and the spring is instantly released. Through the conversion of the mechanical device, the change in the spring's rotation angle is converted into a change in the displacement of the circuit breaker's vacuum bubble moving contact, achieving the closing operation. At the same time, during the release of the energy storage spring, a portion of the energy acts on the opening spring through the conversion device, causing it to stretch and complete the opening spring energy storage operation. When the opening button is pressed, the limit on the opening spring is removed, and the opening spring contracts, releasing energy. This energy is converted into displacement of the circuit breaker's vacuum bubble moving contact through the mechanical structure, achieving the opening operation.

[0004] However, conventional spring operating mechanisms are currently commonly used in air-insulated ring main units (RMUs), which are divided into two categories based on electrical distance: one with an air gap greater than 125mm and the other with an air gap less than 125mm. This type of RMU, assembled based on the existing spring operating mechanism, vacuum circuit breaker, and disconnector, has the following shortcomings:

[0005] Conventional spring operating mechanisms are relatively high, which makes the air-insulated ring main unit larger in size and more expensive, and cannot meet the requirements for miniaturization of the air-insulated ring main unit. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a compact spring operating mechanism and an air-insulated ring main unit with reasonable layout, reasonable transmission, compact structure and small size.

[0007] The technical solution adopted by the present invention is as follows: the present invention includes a compact spring operating mechanism, the compact spring operating mechanism includes a circuit breaker operating mechanism and an isolation grounding mechanism arranged below the circuit breaker operating mechanism, the isolation grounding mechanism includes a grounding switch assembly and an isolation switch assembly located above the grounding switch assembly;

[0008] The circuit breaker operating mechanism includes a circuit breaker base, a worm gear assembly, an energy storage motor, a gear transmission assembly, an energy storage shaft assembly, two energy storage springs, a closing limit assembly, an opening shaft, an opening spring, an opening limit assembly, a connecting rod assembly and a gear rack assembly. The worm gear assembly is connected to the input shaft of the energy storage motor, the gear transmission assembly is connected to the output shaft of the energy storage motor, the middle part of the energy storage shaft assembly passes through the gear transmission assembly, one end of the two energy storage springs is respectively connected to the two ends of the energy storage shaft assembly, and the two The other end of each energy storage spring is fixed to the circuit breaker base. The closing limit assembly is used to keep the energy storage spring in the energy storage state after the energy storage spring is stretched and stored beyond the limit position. One end of the opening spring is fixed to the circuit breaker base. The other end of the opening spring is connected to the opening shaft. The connecting rod assembly is sleeved and fixed on the opening shaft. The connecting rod assembly contacts the energy storage shaft assembly, the gear rack assembly and the opening limit assembly respectively within the rotation range, so that the circuit breaker operating mechanism can perform opening and closing operations.

[0009] The isolating switch assembly includes an isolating grounding base, an isolating operating shaft, a planar scroll spring and an isolating limit assembly. The isolating operating shaft is installed on the isolating grounding base, and the isolating limit assembly is arranged on the isolating operating shaft. The two ends of the planar scroll spring are respectively connected to the two ends of the isolating limit assembly, so that the isolating operating shaft can perform the isolating switch closing and opening operations.

[0010] Furthermore, the grounding switch assembly includes a grounding operating shaft, a grounding rotating assembly, a compression spring assembly and a grounding limit assembly. The grounding operating shaft is installed on the isolated grounding base, the grounding rotating assembly is fixed on the grounding operating shaft, one end of the compression spring assembly is fixed to the isolated grounding base, and the other end of the compression spring assembly is connected to the grounding rotating assembly. The grounding limit assembly is arranged on the forward rotation stroke and reverse rotation stroke of the grounding rotating assembly, and is used to limit the forward rotation stroke and reverse rotation stroke of the grounding rotating assembly, so that the grounding operating shaft can perform grounding switch closing and opening operations.

[0011] Furthermore, the circuit breaker operating mechanism also includes a first mounting plate and a second mounting plate symmetrically arranged on the circuit breaker base, the worm gear assembly includes a worm mounting seat, a worm and a worm wheel, the worm mounting seat is installed at the side end of the energy storage motor, the worm is arranged in the worm mounting seat, and the front end of the worm is a hexagonal bolt head, and the worm wheel is arranged on the input shaft of the energy storage motor; the gear transmission assembly includes a pinion, a large gear and a ratchet device, the energy storage motor is installed at the side end of the first mounting plate, the input shaft of the energy storage motor passes through the first mounting plate and is fixed to the second mounting plate, the pinion is fixed to the input shaft of the energy storage motor, and the ratchet device is installed between the first mounting plate and the second mounting plate and is located at the lower end of the pinion.

[0012] Furthermore, the energy storage shaft assembly includes an energy storage shaft, both ends of the energy storage shaft are provided with a first connecting rod, the end of the first connecting rod is provided with a first mounting shaft, one end of each energy storage spring is respectively connected to one of the first mounting shafts, the middle part of the energy storage shaft is located between the first mounting plate and the second mounting plate, the large gear sleeve is provided in the middle part of the energy storage shaft, the end face of the large gear is provided with a torque spring limit hysteresis, the middle part of the energy storage shaft is also fixed with a cam located at the side end of the large gear, and the cam is provided with a first notch adapted to the torque spring limit hysteresis. When the energy storage motor stores energy, after the large gear idles for a certain angle, the torque spring limit hysteresis is stuck in the first notch of the cam, driving the energy storage shaft assembly to rotate, thereby causing the energy storage spring to store energy;

[0013] Furthermore, the closing limit assembly includes a closing limit shaft and a closing rotation shaft, the closing limit shaft and the closing rotation shaft are both installed between the first mounting plate and the second mounting plate, and the closing rotation shaft is located above the closing limit shaft, and the closing rotation shaft is provided with a first closing upper connecting rod and a first closing lower connecting rod, the lower end of the first closing lower connecting rod is fixed with a first opening torsion spring, the other end of the first opening torsion spring is fixed to the inner side surface of the second mounting plate, a connecting rod pushing wheel is provided on the side of the cam, a closing limit notch is provided on the closing limit shaft that is adapted to the bottom of the first closing lower connecting rod, and the first closing upper connecting rod is fixed with a first opening torsion spring. Within the moving stroke of the connecting rod pushing wheel, when the energy storage spring stores energy, the connecting rod pushing wheel pushes the first closing upper connecting rod to swing, and when the energy storage operation is completed, the first closing lower connecting rod is stuck in the closing limit notch, so that the energy storage spring remains in the energy storage state, the end of the closing limit shaft passes through the outer side surface of the second mounting plate, and the end of the closing limit shaft is provided with a closing paddle, the lower end of the closing paddle is provided with a closing solenoid valve, and the upper end of the closing paddle is provided with a closing button, the closing solenoid valve and the closing button can both drive the closing limit shaft to rotate, so that the first closing lower connecting rod is disengaged from the closing limit notch, and the closing action is completed.

[0014] Furthermore, the connecting rod assembly includes connecting rod pieces symmetrically sleeved and fixed on the opening switch shaft, an upper opening switch wheel and a lower opening switch wheel are respectively provided between the upper and lower ends of the two connecting rod pieces, and a front closing and opening switch pull rod is provided between the front ends of the two connecting rod pieces; the gear rack assembly includes a closing and opening tooth bracket fixed to the circuit breaker base, a closing and opening rack located directly above the front closing and opening switch pull rod is slidably connected in the closing and opening tooth bracket, the side end of the closing and opening rack is meshed with an incomplete gear, and a closing and opening switch dynamic matching core shaft is sleeved and fixed on the incomplete gear; the opening switch limit assembly includes an opening switch tripping shaft and an opening switch positioning member, both of which are installed between the first mounting plate and the second mounting plate, and the opening switch tripping shaft is provided with a contact with the upper end surface of the opening switch positioning member The opening limit notch is adapted, the opening positioning piece is used to limit the rotation of the upper opening wheel, the opening trip shaft is used to limit the upward rotation of the opening positioning piece, and a closing rolling dial is fixed on the energy storage shaft, and the closing rolling dial is used to push the lower opening wheel to rotate when closing, so that the opening spring is compressed and stores energy; the end of the opening trip shaft is provided with an opening connecting rod paddle 1 and an opening button connected to the opening connecting rod paddle 1, the front end of the opening trip shaft is provided with an opening connecting rod paddle 2 and an opening solenoid valve located directly above the opening connecting rod paddle 2, the opening solenoid valve and the opening button can both drive the opening trip shaft to rotate, so that the first closing upper connecting rod disengages from the opening limit notch, completing the opening action.

[0015] Furthermore, the isolation limiting assembly includes an isolation base, the front end of the isolation operating shaft is a hexagonal bolt, the other end of the isolation operating shaft passes through the isolation base and is fixed to the isolation grounding base, the isolation base is provided with a volute spring limiting rotor and an isolation rotor, the isolation base is also provided with a volute spring compression rotor fixed to the isolation operating shaft, the volute spring limiting rotor is provided with a plurality of spring limiting grooves, the outer edge of the volute spring compression rotor is provided with a first hook block, the inner end of the planar volute spring is fixed in one of the spring limiting grooves, the outer end of the planar volute spring is fixed to the first hook block, both ends of the outer edge of the isolation rotor are provided with limiting buckle notches, the side end of the isolation rotor is provided with a first arc guide groove, and a rotation limiting wheel assembly is provided between the first arc guide groove and the outer edge of the isolation rotor. The rotation limiting wheel device includes a symmetrically arranged triangular base, one end angle of the two triangular bases is hinged, and a limiting clamping wheel is provided at the second end angle of the triangular base, and the limiting clamping wheel is attached to the outer edge of the isolation rotor and adapted to the limiting clamping notch, and the third end angle of one of the triangular bases is connected to the convex head angle provided in the middle part of the volute spring compression rotor, the outer side surface of the isolation grounding base is provided with an isolation grounding plate, the middle part of the isolation grounding plate is provided with an isolation grounding rotating shaft, the upper part of the isolation grounding plate is provided with a second arc guide groove and a third arc guide groove connected to the second arc guide groove, the upper part of the isolation grounding base is provided with a fourth arc guide groove, and the lower end of the isolation rotor is provided with a first linkage column, and the first linkage column is located in the second arc guide groove and the third arc guide groove after passing through the fourth arc guide groove.

[0016] Furthermore, the grounding limit assembly includes a grounding base, the grounding rotation assembly includes a rotating seat plate, the middle part of the rotating seat plate is fixed to the grounding operating shaft, the lower part of the rotating seat plate is provided with a lower cylindrical shaft, the grounding base is provided with an upper cylindrical shaft located obliquely above the lower cylindrical shaft, the compression spring assembly includes a compression spring and a compression guide plate, the front end of the compression guide plate is provided with a guide slot, the rear end of the compression guide plate is fixed on the lower cylindrical shaft, the guide slot is sleeved in the upper cylindrical shaft, the compression spring is located between the upper cylindrical shaft and Between the lower cylindrical shafts, a limiting boss is provided inside the side end of the grounding base, and the limiting boss is used to limit the forward and reverse rotation strokes of the rotating seat plate; the lower part of the isolated grounding base is provided with a fifth arc guide groove, and the lower part of the isolated grounding plate is provided with a sixth oblique guide groove, and the oblique upper part of the rotating seat plate is provided with a second linkage column, which is located in the sixth oblique guide groove after passing through the fifth arc guide groove; under this structural design, the grounding operating shaft directly compresses the spring to cross the inflection point to realize the closing and opening actions of the grounding switch, which has the advantages of simple and compact structure and reliable operation.

[0017] Furthermore, the present invention also includes an air-insulated ring main unit, which includes any one of the compact spring operating mechanisms described above.

[0018] The beneficial effects of the present invention are as follows: 1. The transmission components in the compact spring operating mechanism are rationally arranged, which greatly reduces the maximum height of the operating room, thereby reducing the depth of the operating room, making the volume of the air-insulated ring main unit smaller; 2. A flat spiral spring is used to replace the compression spring, thereby realizing a thin design of the isolation operating mechanism, and the transmission component has a simple structure, and the operation is safe and reliable; 3. Through the design of the worm gear assembly, the output shaft of the energy storage motor and the energy storage rotating shaft of the circuit breaker operating mechanism are arranged horizontally, and a connecting rod assembly and a gear rack assembly are used to replace the traditional transmission shaft, thereby reducing the height of the circuit breaker operating mechanism, achieving the goals of a compact circuit breaker operating mechanism structure and a small volume of the air-insulated ring main unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the air insulated ring main unit;

[0020] Figure 2 It is a schematic diagram of the structure of a compact spring operating mechanism;

[0021] Figure 3 It is the front view of the compact spring operating mechanism;

[0022] Figure 4 It is a rear view structural diagram between the energy storage shaft assembly and the closing limit assembly;

[0023] Figure 5 This is the main view between the energy storage shaft assembly and the closing limit assembly;

[0024] Figure 6 It is a rear view structural diagram of the opening shaft, opening spring, opening limit assembly, connecting rod assembly and gear rack assembly;

[0025] Figure 7 It is the main view between the opening shaft, opening spring, opening limit assembly, connecting rod assembly and gear rack assembly;

[0026] Figure 8 It is a structural diagram of the isolation grounding mechanism;

[0027] Figure 9 It is the rear view of the isolation grounding mechanism;

[0028] Figure 10 It is a top view of the isolation grounding mechanism;

[0029] Figure 11 yes Figure 10 Cross-sectional view of section AA;

[0030] Figure 12 This is an exploded view of the isolation limit assembly. DETAILED DESCRIPTION

[0031] like Figures 1 to 12 As shown, in this embodiment, the present invention includes a compact spring operating mechanism, which includes a circuit breaker operating mechanism 2 and an isolation grounding mechanism 3 disposed below the circuit breaker operating mechanism 2, wherein the isolation grounding mechanism 3 includes a grounding switch assembly 4 and an isolation switch assembly 5 located above the grounding switch assembly 4;

[0032] The circuit breaker operating mechanism 2 includes a circuit breaker base 21, a worm gear assembly 22, an energy storage motor 23, a gear transmission assembly 24, an energy storage shaft assembly 25, two energy storage springs 26, a closing limit assembly 27, an opening shaft 28, an opening spring 29, an opening limit assembly 210, a connecting rod assembly 211 and a gear rack assembly 212. The worm gear assembly 22 is connected to the input shaft of the energy storage motor 23, the gear transmission assembly 24 is connected to the output shaft of the energy storage motor 23, the middle part of the energy storage shaft assembly 25 passes through the gear transmission assembly 24, one end of the two energy storage springs 26 is respectively connected to the two ends of the energy storage shaft assembly 25. The other ends of the two energy storage springs 26 are fixed to the circuit breaker base 21. The closing limit assembly 27 is used to keep the energy storage spring 26 in the energy storage state after the energy storage spring 26 is stretched and stored beyond the limit position. One end of the opening spring 29 is fixed to the circuit breaker base 21, and the other end of the opening spring 29 is connected to the opening shaft 28. The connecting rod assembly 211 is sleeved and fixed on the opening shaft 28, and the connecting rod assembly 211 contacts the energy storage shaft assembly 25, the gear rack assembly 212 and the opening limit assembly 210 within the rotation range; so that the circuit breaker operating mechanism 2 can perform opening and closing operations;

[0033] The isolating switch assembly 5 includes an isolating grounding base 51, an isolating operating shaft 52, a planar scroll spring 53 and an isolating limit assembly 54. The isolating operating shaft 52 is installed on the isolating grounding base 51, and the isolating limit assembly 54 is arranged on the isolating operating shaft 52. The two ends of the planar scroll spring 53 are respectively connected to the two ends of the isolating limit assembly 54, so that the isolating operating shaft 52 can perform the isolating switch closing and opening operations.

[0034] In this embodiment, the grounding switch assembly 4 includes a grounding operating shaft 41, a grounding rotating assembly 42, a compression spring assembly 43 and a grounding limit assembly 44. The grounding operating shaft 41 is installed on the isolated grounding base 51, and the grounding rotating assembly 42 is fixed on the grounding operating shaft 41. One end of the compression spring assembly 43 is fixed to the isolated grounding base 51, and the other end of the compression spring assembly 43 is connected to the grounding rotating assembly 42. The grounding limit assembly 44 is arranged on the forward rotation stroke and reverse rotation stroke of the grounding rotating assembly 42, and is used to limit the forward rotation stroke and reverse rotation stroke of the grounding rotating assembly 42, so that the grounding operating shaft 41 can perform grounding switch closing and opening operations.

[0035] In this embodiment, the circuit breaker operating mechanism 2 further includes a first mounting plate 22a and a second mounting plate 23a symmetrically arranged on the circuit breaker base 21, the worm gear assembly 22 includes a worm mounting seat 221, a worm 222 and a worm wheel 223, the worm mounting seat 221 is mounted on the side end of the energy storage motor 23, the worm 222 is arranged in the worm mounting seat 221, and the front end of the worm 222 is a hexagonal bolt head, the worm wheel 223 is arranged on the input shaft of the energy storage motor 23; the gear transmission assembly 24 includes a pinion 241, a large gear 242 and a ratchet device 243, and the energy storage motor 23 is mounted on the first mounting seat. The side end of the plate 22a, the input shaft of the energy storage motor 23 passes through the first mounting plate 22a and is fixed on the second mounting plate 23a, the pinion 241 is fixed to the input shaft of the energy storage motor 23, and the ratchet device 243 is installed between the first mounting plate 22a and the second mounting plate 23a, and is located at the lower end of the pinion 241, so that the energy storage shaft assembly 25 can only rotate clockwise; the power transmission of this design structure is: the hexagonal bolt head can be manually turned to rotate the worm gear assembly 22 to transmit power to the energy storage motor 23, thereby driving the pinion 241 to rotate clockwise, and then causing the large gear 242 to rotate counterclockwise.

[0036] In this embodiment, the energy storage shaft assembly 25 includes an energy storage shaft 251, both ends of the energy storage shaft 251 are provided with a first connecting rod 252, the end of the first connecting rod 252 is provided with a first mounting shaft 253, one end of each of the energy storage springs 26 is respectively connected to one of the first mounting shafts 253, the middle part of the energy storage shaft 251 is located between the first mounting plate 22a and the second mounting plate 23a, the large gear 242 is arranged in the middle part of the energy storage shaft 251 through a bearing sleeve, and the end surface of the large gear 242 is provided with a torque spring limit hysteresis 2 54, a cam 255 located at the side end of the large gear 242 is further fixed to the middle portion of the energy storage shaft 251, and a first notch 2551 is provided on the cam 255 to match the torque spring limit hysteresis 254. The power transmission of this design structure is as follows: when the energy storage motor 23 is storing energy, after the large gear 242 idles for a certain angle, the torque spring limit hysteresis 254 is stuck in the first notch 2551 of the cam 255, thereby driving the cam 255 to rotate, thereby causing the energy storage shaft 251 to rotate together, thereby stretching the two energy storage springs 26, so that the energy storage springs 26 store energy.

[0037] In this embodiment, the closing limit assembly 27 includes a closing limit shaft 271 and a closing rotation shaft 272. The closing limit shaft 271 and the closing rotation shaft 272 are both installed between the first mounting plate 22a and the second mounting plate 23a, and the closing rotation shaft 272 is located above the closing limit shaft 271. A first closing upper connecting rod 273 and a first closing lower connecting rod 274 are provided on the closing rotation shaft 272. The lower end of the first closing lower connecting rod 274 is fixed with a first opening torsion spring 275, and the other end of the first opening torsion spring 275 is fixed to the second mounting plate 22a. On the inner side of the mounting plate 23a, a connecting rod pushing wheel 276 is provided on the side of the cam 255, and a closing limiting notch 277 is provided on the closing limiting shaft 271, which is adapted to the bottom of the first closing lower connecting rod 274. The first closing upper connecting rod 273 is within the moving stroke of the connecting rod pushing wheel 276. When the energy storage spring 26 stores energy, the connecting rod pushing wheel 276 pushes the first closing upper connecting rod 273 to swing, and when the energy storage operation is completed, the first closing lower connecting rod 274 is stuck in the closing limiting notch 277, so that the energy storage spring 26 maintains the energy storage state, and the closing The end of the limit shaft 271 passes through the outer side of the second mounting plate 23a, and the end of the closing limit shaft 271 is provided with a closing paddle 278, the lower end of the closing paddle 278 is provided with a closing solenoid valve 279, and the upper end of the closing paddle 278 is provided with a closing button 2710. The closing solenoid valve 279 and the closing button 2710 can both drive the closing limit shaft 271 to rotate, so that the first closing lower connecting rod 274 is disengaged from the closing limit notch 277, completing the closing action; when the energy storage spring 26 is storing energy, the connecting rod pushing wheel 276 pushes the first closing upper connecting rod 273 , causing the first closing lower link 274 to move upward, and when the energy storage spring 26 is stretched and stores energy beyond the limit position, the first closing lower link 274 is just in the closing limit notch 277, thereby completing the maintenance of the energy storage spring 26 in the energy storage state; when the circuit breaker needs to be closed, the closing button 2710 is pressed or the closing solenoid valve 279 is activated, and the closing limit shaft 271 can be driven to rotate through the closing paddle 278, thereby causing the first closing lower link 274 to disengage from the closing limit notch 277, and the energy storage shaft 251 is rotated under the elastic potential energy of the energy storage spring 26 to perform the closing action.

[0038] In this embodiment, the connecting rod assembly 211 includes a connecting rod piece 2111 symmetrically sleeved and fixed on the opening switch shaft 28, an upper opening switch wheel 2112 and a lower opening switch wheel 2113 are respectively provided between the upper and lower ends of the two connecting rod pieces 2111, and a front closing and opening switch pull rod 2114 is provided between the front ends of the two connecting rod pieces 2111; the gear rack assembly 212 includes a closing and opening gear bracket 2121 fixed to the circuit breaker base 21, and a gear located at the front closing and opening switch pull rod 2114 is slidably connected in the closing and opening gear bracket 2121. The closing and opening rack 2122 is located just above the rod 2114. A closing and opening connector is provided between the front closing and opening pull rod 2114 and the closing and opening rack 2122. The side end of the closing and opening rack 2122 is engaged with an incomplete gear 2123. The incomplete gear 2123 is sleeved and fixed with a closing and opening dynamic matching core shaft 2124. The opening limit assembly 210 includes an opening tripping shaft 2101 and an opening positioning member 2102, both of which are installed between the first mounting plate 22a and the second mounting plate 23a. The opening tripping shaft 2101 is provided with a closing limit notch 2103 adapted to the upper end surface of the closing positioning member 2102, the closing positioning member 2102 is used to limit the rotation of the upper closing wheel 2112, the closing trip shaft 2101 is used to limit the upward rotation of the closing positioning member 2102, and the energy storage shaft 251 is sleeved with a closing scroll wheel 256 fixed thereon, and the closing scroll wheel 256 is used to push the lower closing wheel 2113 to rotate when closing, so that the opening spring 29 is compressed and stores energy; the opening trip shaft 21 The end of 01 is provided with a trip link paddle 1 2104 and a trip button 2105 connected to the trip link paddle 1 2104, and the front end of the trip trip shaft 2101 is provided with a trip link paddle 2106 and a trip solenoid valve 2107 located directly above the trip link paddle 2106. The trip solenoid valve 2107 and the trip button 2105 can both drive the trip trip shaft 2101 to rotate, so that the first closing upper link 273 disengages from the trip limit notch 2103, completing the trip action.

[0039] In this embodiment, the isolation limiting assembly 54 includes an isolation machine base 541, the front end of the isolation operating shaft 52 is a hexagonal bolt, the other end of the isolation operating shaft 52 passes through the isolation machine base 541 and is fixed to the isolation grounding base 51, the isolation machine base 541 is provided with a volute spring limiting rotor 542 and an isolation rotor 543, the isolation machine base 541 is also provided with a volute spring compression rotor 544 fixed to the isolation operating shaft 52, the volute spring limiting rotor 542 is provided with a plurality of spring limiting grooves 545, the outer edge of the volute spring compression rotor 544 is provided with a first hook block 546, the inner end of the planar volute spring 53 is fixed to one of the spring limiting In the groove 545, the outer end of the planar spiral spring 53 is fixed to the first hook block 546, and both ends of the outer edge of the isolation rotor 543 are provided with a limit buckle notch 547, and the side end of the isolation rotor 543 is provided with a first arc guide groove 548, and a rotation limit wheel device 549 is provided between the first arc guide groove 548 and the outer edge of the isolation rotor 543. The rotation limit wheel device 549 includes a symmetrically arranged triangular base 5410, one end angle of the two triangular bases 5410 is hinged, and a limit clamping wheel 5411 is provided at the second end angle of the triangular base 5410, and the limit clamping wheel 5411 is attached to the outer edge of the isolation rotor 543 and is in contact with the limit buckle notch 547. 7 is adapted, the third end angle of one of the triangular bases 5410 is connected to the convex head angle 5441 provided in the middle of the volute spring compression rotor 544, and before the plane volute spring 53 is compressed, the limiting clamping wheel 5411 of the other triangular base 5410 is just stuck in the limiting clamping notch 547, so that when the isolation operating shaft 52 drives the volute spring compression rotor 544 to rotate and compress the plane volute spring 53, the isolation rotor 543 cannot rotate. When the plane volute spring 53 is compressed to the limit, the convex head angle 5441 just drives the rotation limiting wheel device 549 to rotate, so that the limiting clamping wheel 5411 stuck in the limiting clamping notch 547 is lifted, thereby The elastic potential energy of the volute spring 53 drives the volute spring limiting rotor 542 to rotate, thereby also driving the isolation rotor 543 to rotate. The outer side of the isolation grounding base 51 is provided with an isolation grounding plate 55, and the middle part of the isolation grounding plate 55 is provided with an isolation grounding rotating shaft 551. The upper part of the isolation grounding plate 55 is provided with a second arc guide groove 552 and a third arc guide groove 553 connected to the second arc guide groove 552. The upper part of the isolation grounding base 51 is provided with a fourth arc guide groove 554. The lower end of the isolation rotor 543 is provided with a first linkage column 555. After passing through the fourth arc guide groove 554, the first linkage column 555 is located in the second arc guide groove 552 and the third arc guide groove 553.

[0040] In this design structure, the operation process of the isolation limit assembly 54 is as follows: by rotating the isolation operating shaft 52, the volute spring compression rotor 544 is driven to rotate and compress the flat volute spring 53. When the flat volute spring 53 is compressed to the limit, the convex head angle 5441 just drives the limit clamping wheel 5411 stuck in the limit clamping notch 547 to lift up, thereby driving the volute spring limit rotor 542 to rotate under the elastic potential energy of the flat volute spring 53, thereby also driving the isolation rotor 543 to rotate, and then causing the first linkage column 555 to move in the guide groove, so that the isolation grounding shaft 551 on the isolation grounding plate 55 is isolated and opened and closed.

[0041] In this embodiment, the grounding limit assembly 44 includes a grounding base 441, the grounding rotation assembly 42 includes a rotating seat plate 442, the middle part of the rotating seat plate 442 is fixed to the grounding operating shaft 41, the lower part of the rotating seat plate 442 is provided with a lower cylindrical shaft 443, the grounding base 441 is provided with an upper cylindrical shaft 444 located obliquely above the lower cylindrical shaft 443, the compression spring assembly 43 includes a compression spring 431 and a compression guide plate 432, the front end of the compression guide plate 432 is provided with a guide slot 433, the rear end of the compression guide plate 432 is fixed on the lower cylindrical shaft 443, and the guide slot 433 is sleeved in the upper cylindrical shaft 444, the compression spring 431 is located between the upper cylindrical shaft 444 and the lower cylindrical shaft 443, and a limiting boss 445 is provided inside the side end of the grounding base 441, and the limiting boss 445 is used to limit the forward and reverse strokes of the rotating seat plate 442; the lower part of the isolated grounding base 51 is provided with a fifth arc guide groove 511, and the lower part of the isolated grounding plate 55 is provided with a sixth oblique guide groove 556, and the oblique upper part of the rotating seat plate 442 is provided with a second linkage column 557, and the second linkage column 557 passes through the fifth arc guide groove 511 and is located in the sixth oblique guide groove 556.

[0042] In this design structure, the operation process of the grounding limit assembly 44 is: the grounding operating shaft 41 is rotated clockwise to drive the rotating seat plate 442 to rotate, so that the compression guide plate 432 moves in an upward direction, thereby compressing the compression spring 431. When the compression reaches the end, the compression spring 431 pushes the rotating seat plate 442 upward and rotates to the limit boss 445. At this time, the second linkage column 557 can also move in the guide groove, so that the isolation grounding shaft 551 on the isolation grounding plate 55 can be grounded and opened and closed.

[0043] In this embodiment, the present invention also includes an air-insulated ring main unit, which includes the compact spring operating mechanism and the operating chamber 1 described in any one of the items, the circuit breaker operating mechanism 2 is arranged at the upper end of the wall of the operating chamber 1, and the lower end of the operating chamber 1 is provided with an isolation grounding mechanism 3, and the isolation grounding mechanism 3 is arranged at the lower end of the wall of the operating chamber 1.

[0044] The present invention is applied to the technical field of ring network cabinets.

[0045] Although the embodiments of the present invention are described with practical solutions, they do not limit the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A compact spring operating mechanism, comprising a circuit breaker operating mechanism (2) and an isolating grounding mechanism (3) arranged below the circuit breaker operating mechanism (2), the isolating grounding mechanism (3) comprising a grounding switch assembly (4) and an isolating switch assembly (5) located above the grounding switch assembly (4), characterized in that: The circuit breaker operating mechanism (2) comprises a circuit breaker base (21), a worm gear assembly (22), an energy storage motor (23), a gear transmission assembly (24), an energy storage shaft assembly (25), two energy storage springs (26), a closing limit assembly (27), an opening shaft (28), an opening spring (29), an opening limit assembly (210), a connecting rod assembly (211) and a gear rack assembly (212), wherein the connecting rod assembly (211) comprises connecting rod pieces (2111) symmetrically sleeved and fixed on the opening shaft (28), and the upper and lower ends of the two connecting rod pieces (2111) are connected to each other. An upper opening brake wheel (2112) and a lower opening brake wheel (2113) are respectively provided between the two connecting rod pieces (2111), and a front closing and opening brake pull rod (2114) is provided between the front ends of the two connecting rod pieces (2111); the gear rack assembly (212) comprises a closing and opening gear bracket (2121) fixed to the circuit breaker base (21), a closing and opening rack (2122) located directly above the front closing and opening brake pull rod (2114) is slidably connected in the closing and opening gear bracket (2121), and an incomplete gear (2123) is meshed with a side end of the closing and opening rack (2122), and the incomplete gear (2123) is sleeved on the upper sleeve. A closing and opening dynamic matching core shaft (2124) is fixed; the worm gear assembly (22) is connected to the input shaft of the energy storage motor (23), the gear transmission assembly (24) is connected to the output shaft of the energy storage motor (23), the middle of the energy storage rotating shaft assembly (25) passes through the gear transmission assembly (24), one end of the two energy storage springs (26) is respectively connected to the two ends of the energy storage rotating shaft assembly (25), the other ends of the two energy storage springs (26) are fixed to the circuit breaker base (21), and the closing limit assembly (27) is used when the energy storage spring After the spring (26) is stretched to store energy beyond the limit position, the energy storage spring (26) is maintained in the energy storage state, one end of the opening spring (29) is fixed to the circuit breaker base (21), and the other end of the opening spring (29) is connected to the opening rotating shaft (28), and the connecting rod assembly (211) is sleeved and fixed on the opening rotating shaft (28), and the connecting rod assembly (211) contacts the energy storage rotating shaft assembly (25), the gear rack assembly (212) and the opening limit assembly (210) within the rotation stroke, so that the circuit breaker operating mechanism (2) can perform opening and closing operations; The isolating switch assembly (5) comprises an isolating grounding base (51), an isolating operating shaft (52), a planar volute spring (53) and an isolating limit assembly (54), wherein the isolating operating shaft (52) is mounted on the isolating grounding base (51), the isolating limit assembly (54) is arranged on the isolating operating shaft (52), and the two ends of the planar volute spring (53) are respectively connected to the two ends of the isolating limit assembly (54), so that the isolating operating shaft (52) can perform the isolating switch closing and opening operations.

2. A compact spring operating mechanism according to claim 1, characterized in that: The grounding switch assembly (4) comprises a grounding operating shaft (41), a grounding rotating assembly (42), a compression spring assembly (43) and a grounding limit assembly (44); the grounding operating shaft (41) is mounted on the isolated grounding base (51); the grounding rotating assembly (42) is fixed on the grounding operating shaft (41); one end of the compression spring assembly (43) is fixed to the isolated grounding base (51); the other end of the compression spring assembly (43) is connected to the grounding rotating assembly (42); the grounding limit assembly (44) is arranged on the forward rotation stroke and the reverse rotation stroke of the grounding rotating assembly (42) and is used to limit the forward rotation stroke and the reverse rotation stroke of the grounding rotating assembly (42), so that the grounding operating shaft (41) can perform grounding switch closing and opening operations.

3. A compact spring operating mechanism according to claim 2, characterized in that: The circuit breaker operating mechanism (2) further comprises a first mounting plate (22a) and a second mounting plate (23a) symmetrically arranged on the circuit breaker base (21); the worm gear assembly (22) comprises a worm mounting seat (221), a worm (222) and a worm wheel (223); the worm mounting seat (221) is mounted on the side end of the energy storage motor (23); the worm (222) is arranged in the worm mounting seat (221), and the front end of the worm (222) is a hexagonal bolt head; the worm wheel (223) is arranged on the input shaft of the energy storage motor (23); the gear The wheel transmission assembly (24) comprises a pinion (241), a large gear (242) and a ratchet device (243); the energy storage motor (23) is mounted on a side end of the first mounting plate (22a); the input shaft of the energy storage motor (23) passes through the first mounting plate (22a) and is fixed to the second mounting plate (23a); the pinion (241) is fixed to the input shaft of the energy storage motor (23); the ratchet device (243) is mounted between the first mounting plate (22a) and the second mounting plate (23a) and is located at the lower end of the pinion (241).

4. A compact spring operating mechanism according to claim 3, characterized in that: The energy storage shaft assembly (25) comprises an energy storage shaft (251), first connecting rods (252) are provided at both ends of the energy storage shaft (251), first mounting shafts (253) are provided at the ends of the first connecting rods (252), one end of each energy storage spring (26) is connected to one of the first mounting shafts (253), the middle of the energy storage shaft (251) is located between the first mounting plate (22a) and the second mounting plate (23a), the large gear (242) is sleeved at the middle of the energy storage shaft (251), and the end of the large gear (242) is connected to the first mounting shaft (253). A torque spring limiting hysteresis (254) is provided on the surface, and a cam (255) located at the side end of the large gear (242) is fixed to the middle of the energy storage shaft (251), and a first notch (2551) adapted to the torque spring limiting hysteresis (254) is provided on the cam (255). When the energy storage motor (23) stores energy, after the large gear (242) idles for a certain angle, the torque spring limiting hysteresis (254) is stuck in the first notch (2551) of the cam (255), driving the energy storage shaft assembly (25) to rotate, thereby allowing the energy storage spring (26) to store energy.

5. The compact spring operating mechanism according to claim 4, characterized in that: The closing limit assembly (27) comprises a closing limit shaft (271) and a closing rotation shaft (272), wherein the closing limit shaft (271) and the closing rotation shaft (272) are both mounted between the first mounting plate (22a) and the second mounting plate (23a), and the closing rotation shaft (272) is located above the closing limit shaft (271), and a first closing upper connecting rod (273) and a first closing lower connecting rod ( 274), a first opening torsion spring (275) is fixed to the lower end of the first closing lower connecting rod (274), the other end of the first opening torsion spring (275) is fixed to the inner side surface of the second mounting plate (23a), a connecting rod pushing wheel (276) is provided on the side surface of the cam (255), a closing limiting notch (277) adapted to the bottom of the first closing lower connecting rod (274) is provided on the closing limiting shaft (271), and the first closing upper connecting rod (27 3) Within the movement stroke of the connecting rod pushing wheel (276), when the energy storage spring (26) stores energy, the connecting rod pushing wheel (276) pushes the first closing upper connecting rod (273) to swing, and when the energy storage operation is completed, the first closing lower connecting rod (274) is stuck in the closing limit notch (277), so that the energy storage spring (26) maintains the energy storage state, the end of the closing limit shaft (271) passes through the outer side surface of the second mounting plate (23a), and the A closing paddle (278) is provided at the end of the closing limit shaft (271), a closing solenoid valve (279) is provided at the lower end of the closing paddle (278), and a closing button (2710) is provided at the upper end of the closing paddle (278). Both the closing solenoid valve (279) and the closing button (2710) can drive the closing limit shaft (271) to rotate, so that the first closing lower connecting rod (274) is separated from the closing limit notch (277), thereby completing the closing action.

6. The compact spring operating mechanism according to claim 5, characterized in that: The opening limit assembly (210) comprises an opening tripping shaft (2101) and an opening positioning member (2102) both mounted between the first mounting plate (22a) and the second mounting plate (23a); the opening tripping shaft (2101) is provided with an opening limit notch (2103) adapted to the upper end surface of the opening positioning member (2102); the opening positioning member (2102) is used to limit the rotation of the upper opening wheel (2112); the opening tripping shaft (2101) is used to limit the upward rotation of the opening positioning member (2102); a closing scroll wheel (256) is fixedly mounted on the energy storage rotating shaft (251); the closing scroll wheel (256) is used to push the opening wheel (256) when closing the switch; The lower tripping wheel (2113) rotates, causing the tripping spring (29) to be compressed and store energy; the end of the tripping tripping shaft (2101) is provided with a tripping connecting rod paddle 1 (2104) and a tripping button (2105) connected to the tripping connecting rod paddle 1 (2104); the front end of the tripping tripping shaft (2101) is provided with a tripping connecting rod paddle 2 (2106) and a tripping electromagnetic valve (2107) located directly above the tripping connecting rod paddle 2 (2106); the tripping electromagnetic valve (2107) and the tripping button (2105) can both drive the tripping tripping shaft (2101) to rotate, so that the first closing upper connecting rod (273) is disengaged from the tripping limiting notch (2103), completing the tripping action.

7. The compact spring operating mechanism according to claim 6, characterized in that: The isolation limiting assembly (54) includes an isolation machine base (541), the front end of the isolation operating shaft (52) is a hexagonal bolt, the other end of the isolation operating shaft (52) passes through the isolation machine base (541) and is fixed to the isolation grounding base (51), a volute spring limiting rotor (542) and an isolation rotor (543) are provided in the isolation machine base (541), and a volute spring compression rotor (544) fixed to the isolation operating shaft (52) is also provided in the isolation machine base (541), the volute spring limiting rotor (542) is provided with a plurality of spring limiting slots (545), the The outer edge of the volute spring compression rotor (544) is provided with a first hook block (546), the inner end of the planar volute spring (53) is fixed in one of the spring limiting grooves (545), the outer end of the planar volute spring (53) is fixed to the first hook block (546), both ends of the outer edge of the isolation rotor (543) are provided with limiting buckle notches (547), the side end of the isolation rotor (543) is provided with a first arc guide groove (548), a rotation limiting wheel device (549) is provided between the first arc guide groove (548) and the outer edge of the isolation rotor (543), and the rotation limiting wheel device (549) is provided. The positioning wheel device (549) includes symmetrically arranged triangular bases (5410), one end angle of two triangular bases (5410) is hinged, and the second end angle of the triangular base (5410) is provided with a limiting clamping wheel (5411), and the limiting clamping wheel (5411) is attached to the outer edge of the isolation rotor (543) and is adapted to the limiting clamping notch (547), and the third end angle of one of the triangular bases (5410) is connected to the convex head angle (5441) provided in the middle of the volute spring compression rotor (544), and the outer side surface of the isolation grounding base (51) is provided with an isolation grounding A ground plate (55), an isolation grounding rotating shaft (551) is provided in the middle of the isolation grounding plate (55), a second arc guide groove (552) and a third arc guide groove (553) connected to the second arc guide groove (552) are provided on the upper portion of the isolation grounding plate (55), a fourth arc guide groove (554) is provided on the upper portion of the isolation grounding base (51), and a first linkage column (555) is provided at the lower end of the isolation rotor (543), and the first linkage column (555) is located in the second arc guide groove (552) and the third arc guide groove (553) after passing through the fourth arc guide groove (554).

8. The compact spring operating mechanism according to claim 7, characterized in that: The grounding limit assembly (44) includes a grounding base (441), the grounding rotation assembly (42) includes a rotating seat plate (442), the middle portion of the rotating seat plate (442) is fixed to the grounding operating shaft (41), the lower portion of the rotating seat plate (442) is provided with a lower cylindrical shaft (443), the grounding base (441) is provided with an upper cylindrical shaft (444) located obliquely above the lower cylindrical shaft (443), the compression spring assembly (43) includes a compression spring (431) and a compression guide plate (432 ... A guide slot (433) is provided at the front end of the compression guide plate (432), and a rear end of the compression guide plate (432) is fixed on the lower cylindrical shaft (443). The guide slot (433) is sleeved in the upper cylindrical shaft (444). The compression spring (431) is located between the upper cylindrical shaft (444) and the lower cylindrical shaft (443). A limiting boss (445) is provided inside the side end of the grounding base (441), and the limiting boss (445) is used to limit the forward rotation stroke and reverse rotation stroke of the rotating seat plate (442).

9. The compact spring operating mechanism according to claim 8, characterized in that: A fifth arc-shaped guide groove (511) is provided at the lower portion of the isolation grounding base (51), a sixth oblique guide groove (556) is provided at the lower portion of the isolation grounding plate (55), and a second linkage column (557) is provided at the oblique upper portion of the rotating seat plate (442). The second linkage column (557) passes through the fifth arc-shaped guide groove (511) and is located in the sixth oblique guide groove (556).

10. An air-insulated ring main unit, characterized in that: The invention comprises the compact spring operating mechanism according to any one of claims 1 to 9.

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