Spring operating mechanism for medium-voltage sulfur hexafluoride circuit breaker

Abstract

The invention discloses a spring operating mechanism for a medium-voltage sulfur hexafluoride circuit breaker, and belongs to the technical field of circuit breakers, and the spring operating mechanism comprises a frame, an energy storage assembly, a main shaft assembly, a closing assembly, an energy storage indication assembly, a manual opening and closing assembly, an emergency opening assembly, a closing locking assembly and an interlocking assembly. According to the spring operating mechanism, closing and opening operation of the contact of the medium-voltage sulfur hexafluoride circuit breaker is achieved through rotation of the mechanism output connecting lever, the spring operating mechanism has the advantages of being integrated in design, high in reliability, low in machining requirement, easy to assemble, controllable in cost and high in response speed, the energy storage state is displayed through the energy storage indication assembly, and the operation efficiency is improved. Opening and closing states are displayed through the opening and closing indication board, and display is visual; moreover, the emergency opening operation is realized through the emergency opening assembly, the closing and locking operation is realized through the closing and locking assembly, and the interlocking operation is realized through the interlocking assembly, thereby improving the safety.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, and in particular to a spring operating mechanism for a medium-voltage sulfur hexafluoride circuit breaker. Background Art

[0002] Due to the excellent zero-crossing breaking performance of sulfur hexafluoride circuit breakers, sulfur hexafluoride circuit breakers are widely used in medium-voltage power transmission and distribution fields, replacing vacuum circuit breakers to control and protect capacitor banks, thereby protecting the life of capacitor banks.

[0003] Compared with vacuum circuit breakers, sulfur hexafluoride circuit breakers of the same voltage level and specifications have higher contact movement speed and larger movement stroke, and therefore require greater operating power. Currently, there are few types of actuators suitable for medium-voltage sulfur hexafluoride circuit breakers, and their reliability is relatively low. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a spring operating mechanism for a medium-voltage sulfur hexafluoride circuit breaker, and the present invention is implemented through the following technical solutions.

[0005] A spring operating mechanism for a medium-voltage sulfur hexafluoride circuit breaker, comprising: A frame, the frame comprising a first side plate and a second side plate spaced apart from each other in the front and rear directions, the first side plate and the second side plate being connected to form an integral structure through a plurality of connecting studs, and a motor being fixedly connected to the frame; An energy storage assembly, the energy storage assembly includes an energy storage main shaft, an intermediate shaft and an electric energy storage shaft rotatably connected between a first side plate and a second side plate; the energy storage main shaft is provided with a first large gear, the intermediate shaft is fixedly connected with a second large gear and a first small gear, the first small gear is meshed with the first large gear, the electric energy storage shaft is fixedly connected with a second small gear, the second small gear is meshed with the second large gear, the output shaft of the motor is connected to the electric energy storage shaft, the front end of the energy storage main shaft is fixedly connected with an energy storage arm, the energy storage arm is fixedly connected with a hanging spring shaft, the first side plate is fixedly connected with a support, the right side of the support is fixedly connected with a guide sleeve, the guide sleeve A pull rod is connected internally and slidingly, an end cap is fixedly connected to the right end of the pull rod, a closing spring is sleeved on the guide sleeve and the pull rod, a guide shaft is rotatably connected to the support, the first side plate and the second side plate, a sprocket and a guide wheel are fixedly connected to the guide shaft, a chain is provided in the guide sleeve, the chain is engaged with the sprocket, one end of the chain is fixedly connected to the pull rod, a connecting rod is hinged to the other end of the chain, the other end of the connecting rod is hinged to the hanging spring shaft, a cam is fixedly connected to the energy storage main shaft, a friction bearing is rotatably connected to the rear side of the cam, a closing latch is rotatably connected to the position corresponding to the cam between the first side plate and the second side plate, and a friction wheel is rotatably connected to the closing latch; A main shaft assembly, the main shaft assembly includes a spline shaft, an auxiliary switch, a switch-off spring and a fan-shaped plate; the spline shaft is rotatably connected between the first side plate and the second side plate, the rear end of the spline shaft extends out of the second side plate and is fixedly connected to a mechanism output crank arm, the spline shaft between the first side plate and the second side plate is fixedly connected to a main crank arm and a buffer crank arm, the front end of the spline shaft is fixedly connected to an auxiliary switch crank arm and a switch-off indicator plate, the main crank arm is rotatably connected to a first roller and a switch-on holding roller, the main crank arm is also fixedly connected to a hanging spring pin, the auxiliary switch is fixedly connected to the upper right corner of the first side plate, and the toggle handle of the auxiliary switch A first connecting plate is hinged, and the other end of the first connecting plate is hinged to the auxiliary switch crank arm. A first bracket is fixedly connected to the lower right corner of the second side plate. One end of the opening spring is fixed to the first bracket through a locking plate and a screw. A steel wire is fixedly connected to the other end of the opening spring. A connecting head is fixedly connected to the head of the steel wire. The connecting head is hinged to the hanging spring pin. The steel wire is wrapped around the guide wheel. A mounting shaft is rotatably connected between the first side plate and the second side plate. The fan-shaped plate is fixedly connected to the mounting shaft. The fan-shaped plate includes two protruding small buckle plates and a large buckle plate, and the fan-shaped plate is connected to the second side plate through a first torsion spring. A closing assembly, the closing assembly comprising a closing half-shaft and a closing electromagnet, the closing half-shaft being rotatably connected between the first side plate and the second side plate, a notch being provided on the closing half-shaft for interlocking with the corner of the closing latch, a second torsion spring being provided between the closing half-shaft and the first side plate, a first tripping plate being fixedly connected to the front end of the closing half-shaft, the closing electromagnet being fixedly connected to the upper left corner of the first side plate, and a lock core of the closing electromagnet facing the first tripping plate; The opening switch assembly includes an opening switch half-shaft and an opening switch electromagnet. The opening switch half-shaft is rotatably connected between the first side plate and the second side plate. A notch is provided on the opening switch half-shaft for interlocking with the corner of the large buckle plate. A third torsion spring is provided between the opening switch half-shaft and the first side plate. A second release plate is fixedly connected to the front end of the opening switch half-shaft. The opening switch electromagnet is fixedly connected to the front side of the first side plate, and the lock core of the opening switch electromagnet faces the second release plate.

[0006] Furthermore, a manual energy storage shaft is rotatably connected between the first side plate and the second side plate, an operating end of the manual energy storage shaft extends out of the first side plate, and a third small gear meshing with the second large gear is fixedly connected to the manual energy storage shaft.

[0007] Furthermore, it also includes an energy storage indication component, which includes an energy storage switching plate and an energy storage switching switch, wherein a first screw and a second screw are fixedly connected to the first side plate, the top of the energy storage switching plate is rotatably connected to the first screw, an oblong hole is provided on the energy storage switching plate, the second screw is slidably connected in the oblong hole, a protrusion is provided at the left center of the energy storage switching plate, a driving pin is fixedly connected to the rear side of the energy storage arm, the energy storage switching switch is fixedly connected to the front side of the first side plate and is located on the right side of the energy storage switching plate, a first bent plate is fixedly connected to the position of the energy storage switching plate corresponding to the energy storage switching switch, an energy storage indication plate is fixedly connected to the bottom of the energy storage switching plate, a first reset spring is connected to the left bottom of the energy storage switching plate, and the other end of the first reset spring is fixed to the first side plate.

[0008] Furthermore, it also includes a manual separation and combination component, which includes a manual separation and combination shaft, a reversing shaft and a second connecting plate; the manual separation and combination shaft is rotatably connected between the first side plate and the second side plate, the front end of the manual separation and combination shaft is fixedly connected with a separation and combination handle, a fourth torsion spring is provided between the manual separation and combination shaft and the second side plate, a second roller is rotatably connected to the manual separation and combination shaft, a second bent plate is fixedly connected to the opening half-shaft, the reversing shaft is rotatably connected between the first side plate and the second side plate, a fifth torsion spring is provided between the reversing shaft and the second side plate, a third bent plate is fixedly connected to the reversing shaft, a first pin and a second pin are respectively fixedly connected to the top of the third bent plate and the closing half-shaft, and both ends of the second connecting plate are hinged to the first pin and the second pin, respectively.

[0009] Furthermore, it also includes an emergency opening brake assembly, which includes a push rod and a drive plate; the push rod is slidably connected to the first side plate, and a second bracket is fixedly connected to the front side of the first side plate; the drive plate is Z-shaped, and the drive plate is rotatably connected to the second bracket; one end of the drive plate is movably connected to the push rod, and a push plate is fixedly connected to the push rod; a second return spring is sleeved on the push rod on the rear side of the drive plate, and the other end of the drive plate points to the second bent plate.

[0010] Furthermore, it also includes a closing lock assembly, which includes a locking electromagnet and a fourth bent plate, the fourth bent plate is fixedly connected to the rear side of the opening and closing handle, and the locking electromagnet is fixedly connected to the front side of the first side plate.

[0011] Furthermore, it also includes an interlocking assembly, which includes a first interlocking crank arm and an interlocking plate, a fifth bent plate is fixedly connected to the closing half-shaft, a second interlocking crank arm is fixedly connected to the spline shaft, the front side of the second side plate is rotatably connected to a shaft rod, a sixth torsion spring is provided between the shaft rod and the second side plate, the first interlocking crank arm is fixedly connected to the front end of the shaft rod, a swing plate is also fixedly connected to the shaft rod, the interlocking plate is slidably connected to the second side plate, and the top of the swing plate is hinged to the interlocking plate.

[0012] Furthermore, a third roller and a fourth roller are rotatably connected to the buffer crank arm, and a limiting bolt and an oil buffer are provided on the second side plate.

[0013] The beneficial effects of the present invention are that the spring operating mechanism of the present application realizes the closing and opening operations of the contacts of the medium-voltage sulfur hexafluoride circuit breaker by rotating the output crank arm of the mechanism, and has the advantages of integrated design, high reliability, low processing requirements, simple assembly, controllable cost, and fast response speed. In addition, the emergency opening operation is realized by the emergency opening component, the closing and locking operation is realized by the closing and locking component, and the interlocking operation is realized by the interlocking component, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 : A front view of a spring operating mechanism for a medium-voltage sulfur hexafluoride circuit breaker according to the present invention; Figure 2 : A front view of a spring operating mechanism for a medium-voltage sulfur hexafluoride circuit breaker according to the present invention after removing the first side plate; Figure 3 : A rear view of a spring operating mechanism for a medium-voltage sulfur hexafluoride circuit breaker according to the present invention; Figure 4 : A rear view of a spring operating mechanism for a medium-voltage sulfur hexafluoride circuit breaker according to the present invention after removing the second side plate; Figure 5 : A schematic diagram of the structure of the energy storage spindle of the present invention; Figure 6 : A schematic diagram of the structure of the closing spring of the present invention; Figure 7 : A schematic diagram of the structure of the closing half-axis of the present invention; Figure 8 : A schematic diagram of the structure of the energy storage indicator assembly of the present invention; Fig. 9 : A schematic structural diagram of the spline shaft of the present invention; Fig.10 : A schematic structural diagram of the guide shaft of the present invention; Fig.11 : A schematic structural diagram of the intermediate shaft of the present invention; Fig.12 : A schematic structural diagram of the reversing shaft of the present invention; Fig.13 : A schematic diagram of the structure of the manual splitting and closing shaft of the present invention; Fig.14 : A schematic diagram of the structure of the fan-shaped plate of the present invention; Fig.15 : A schematic diagram of the structure of the opening spring of the present invention; Fig.16 : A schematic diagram of the structure of the opening half-shaft and the emergency opening assembly of the present invention; Fig.17 : A schematic diagram of the structure of the closing and locking assembly of the present invention; Fig.18 : A schematic structural diagram of the interlocking assembly of the present invention.

[0016] The reference numerals are as follows: 11-first side plate, 12-second side plate, 13-connecting studs, 14-motor; 21-energy storage main shaft, 22-intermediate shaft, 23-electric energy storage shaft, 24-first large gear, 25-second large gear, 26-first small gear, 27-second small gear, 28-energy storage arm, 29-spring shaft, 210-support, 211-guide sleeve, 212-pull rod, 213-end cover, 214-closing spring, 215-guide shaft, 216-sprocket, 217-guide wheel, 218-chain, 219-connecting rod, 220-cam, 221-friction bearing, 222-closing latch, 223-friction wheel, 224-manual energy storage shaft, 225-third small gear; 31-spline shaft, 32-auxiliary switch, 33-opening spring, 34-sector plate, 3401-small buckle plate, 3402-large buckle plate, 35-mechanism output crank arm, 36-main crank arm, 37-buffer crank arm, 38-auxiliary switch crank arm, 39-opening and closing indicator plate, 310-first roller, 311-closing holding roller, 312-hanging spring pin, 313-first connecting plate, 314-first bracket, 315-anti-loosening plate, 316-screw, 317-steel wire, 318-connector, 319-installation shaft, 320-first torsion spring, 321-third roller, 322-fourth roller, 323-limit bolt, 324-oil buffer; 41-closing half shaft, 42-closing electromagnet, 43-second torsion spring, 44-first trip plate; 51- opening half shaft, 52- opening electromagnet, 53- third torsion spring, 54- second trip plate; 61-energy storage switching plate, 62-energy storage switching switch, 63-first screw, 64-second screw, 65-long round hole, 66-protrusion, 67-driving pin, 68-first bent plate, 69-energy storage indicating plate, 610-first return spring; 71-manual opening and closing shaft, 72-reversing shaft, 73-second connecting plate, 74-opening and closing handle, 75-fourth torsion spring, 76-second roller, 77-second bending plate, 78-fifth torsion spring, 79-third bending plate, 710-first pin shaft, 711-second pin shaft; 81-push rod, 82-driving plate, 83-second bracket, 84-push plate, 85-second return spring; 91 - locking electromagnet, 92 - fourth bending plate, 101 - first interlocking crank arm, 102 - interlocking plate, 103 - fifth bending plate, 104 - second interlocking crank arm, 105 - shaft rod, 106 - sixth torsion spring, 107 - swing plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figure 1-Figure 18 As shown, a spring operating mechanism for a medium-voltage sulfur hexafluoride circuit breaker comprises: A frame, the frame includes a first side plate 11 and a second side plate 12 spaced apart from each other in the front and rear directions, the first side plate 11 and the second side plate 12 are connected to form an integral structure through a plurality of connecting studs 13, and a motor 14 is fixed to the frame; The energy storage assembly includes an energy storage main shaft 21, an intermediate shaft 22 and an electric energy storage shaft 23 which are rotatably connected between the first side plate 11 and the second side plate 12; the energy storage main shaft 21 is provided with a first large gear 24, the intermediate shaft 22 is fixedly connected with a second large gear 25 and a first pinion 26, the first pinion 26 is meshed with the first large gear 24, the electric energy storage shaft 23 is fixedly connected with a second pinion 27, the second pinion 27 is meshed with the second large gear 25, the output shaft of the motor 14 is connected to the electric energy storage shaft 23, the front end of the energy storage main shaft 21 is fixedly connected with an energy storage arm 28, the energy storage arm 28 is fixedly connected with a hanging spring shaft 29, the first side plate 11 is fixedly connected with a support 210, the right side of the support 210 is fixedly connected with a guide sleeve 211, a pull rod 212 is slidably connected in the guide sleeve 211, and the right end of the pull rod 212 is fixedly connected to the guide sleeve 211. There is an end cover 213, a closing spring 214 is sleeved on the guide sleeve 211 and the pull rod 212, a guide shaft 215 is rotatably connected to the support 210, the first side plate 11 and the second side plate 12, a sprocket 216 and a guide wheel 217 are fixedly connected to the guide shaft 215, a chain 218 is provided in the guide sleeve 211, the chain 218 is engaged with the sprocket 216, one end of the chain 218 is fixedly connected to the pull rod 212, the other end of the chain 218 is hinged with a connecting rod 219, the other end of the connecting rod 219 is hinged with the hanging spring shaft 29, a cam 220 is fixedly connected to the energy storage main shaft 21, the rear side of the cam 220 is rotatably connected to a friction bearing 221, a closing latch 222 is rotatably connected to the position corresponding to the cam 220 between the first side plate 11 and the second side plate 12, and a friction wheel 223 is rotatably connected to the closing latch 222; The main shaft assembly includes a spline shaft 31, an auxiliary switch 32, a switch-off spring 33 and a fan-shaped plate 34; the spline shaft 31 is rotatably connected between the first side plate 11 and the second side plate 12, the rear end of the spline shaft 31 extends out of the second side plate 12 and is fixedly connected to a mechanism output crank arm 35, a main crank arm 36 and a buffer crank arm 37 are fixedly connected to the spline shaft 31 between the first side plate 11 and the second side plate 12, an auxiliary switch crank arm 38 and a switch-off indicator plate 39 are fixedly connected to the front end of the spline shaft 31, a first roller 310 and a switch-on holding roller 311 are rotatably connected to the main crank arm 36, a hanging spring pin 312 is also fixedly connected to the main crank arm 36, the auxiliary switch 32 is fixedly connected to the upper right corner of the first side plate 11, and the toggle handle of the auxiliary switch 32 is hingedly connected to the first connecting rod 310. The first connecting plate 313, the other end of the first connecting plate 313 is hinged to the auxiliary switch crank arm 38, the lower right corner of the second side plate 12 is fixedly connected with a first bracket 314, one end of the opening spring 33 is fixed to the first bracket 314 through a locking plate 315 and a screw 316, the other end of the opening spring 33 is fixedly connected to a steel wire 317, the head of the steel wire 317 is fixedly connected to a connector 318, the connector 318 is hinged to the hanging spring pin 312, the steel wire 317 is wrapped around the guide wheel 217, the first side plate 11 and the second side plate 12 are rotatably connected with a mounting shaft 319, the fan-shaped plate 34 is fixedly connected to the mounting shaft 319, the fan-shaped plate 34 includes two protruding small buckle plates 3401 and a large buckle plate 3402, and the fan-shaped plate 34 is connected to the second side plate 12 through a first torsion spring; The closing assembly includes a closing half-shaft 41 and a closing electromagnet 42. The closing half-shaft 41 is rotatably connected between the first side plate 11 and the second side plate 12. A notch is provided on the closing half-shaft 41 to lock with the corner of the closing latch 222. A second torsion spring 43 is provided between the closing half-shaft 41 and the first side plate 11. A first trip plate 44 is fixedly connected to the front end of the closing half-shaft 41. The closing electromagnet 42 is fixedly connected to the upper left corner of the first side plate 11. The lock core of the closing electromagnet 42 faces the first trip plate 44. The opening switch assembly includes an opening switch half-shaft 51 and an opening switch electromagnet 52. The opening switch half-shaft 51 is rotatably connected between the first side plate 11 and the second side plate 12. A notch is provided on the opening switch half-shaft 51 for interlocking with the corner of the large buckle plate 3402. A third torsion spring 53 is provided between the opening switch half-shaft 51 and the first side plate 11. A second release plate 54 is fixedly connected to the front end of the opening switch half-shaft 51. The opening switch electromagnet 52 is fixedly connected to the front side of the first side plate 11, and the lock core of the opening switch electromagnet 52 faces the second release plate 54.

[0019] Preferably, a manual energy storage shaft 224 is rotatably connected between the first side plate 11 and the second side plate 12 , the operating end of the manual energy storage shaft 224 extends out of the first side plate 11 , and a third small gear 225 meshing with the second large gear 25 is fixedly connected to the manual energy storage shaft 224 .

[0020] Preferably, it also includes an energy storage indication component, which includes an energy storage switching plate 61 and an energy storage switching switch 62. A first screw 63 and a second screw 64 are fixed to the first side plate 11. The top of the energy storage switching plate 61 is rotatably connected to the first screw 63. An oblong hole 65 is provided on the energy storage switching plate 61. The second screw 64 is slidably connected in the oblong hole 65. A protrusion 66 is provided at the left center of the energy storage switching plate 61. A driving pin 67 is fixed to the rear side of the energy storage arm 28. The energy storage switching switch 62 is fixed to the front side of the first side plate 11 and is located on the right side of the energy storage switching plate 61. A first bent plate 68 is fixed to the position of the energy storage switching plate 61 corresponding to the energy storage switching switch 62. An energy storage indication plate 69 is fixed to the bottom of the energy storage switching plate 61. A first return spring 610 is connected to the left bottom of the energy storage switching plate 61, and the other end of the first return spring 610 is fixed to the first side plate 11.

[0021] Preferably, it also includes a manual separation and combination component, which includes a manual separation and combination shaft 71, a reversing shaft 72 and a second connecting plate 73; the manual separation and combination shaft 71 is rotatably connected between the first side plate 11 and the second side plate 12, a separation and combination handle 74 is fixedly connected to the front end of the manual separation and combination shaft 71, a fourth torsion spring 75 is provided between the manual separation and combination shaft 71 and the second side plate 12, a second roller 76 is rotatably connected to the manual separation and combination shaft 71, a second bent plate 77 is fixedly connected to the opening half shaft 51, the reversing shaft 72 is rotatably connected between the first side plate 11 and the second side plate 12, a fifth torsion spring 78 is provided between the reversing shaft 72 and the second side plate 12, a third bent plate 79 is fixedly connected to the reversing shaft 72, a first pin 710 and a second pin 711 are respectively fixedly connected to the top of the third bent plate 79 and the closing half shaft 41, and both ends of the second connecting plate 73 are hinged to the first pin 710 and the second pin 711, respectively.

[0022] Preferably, it also includes an emergency opening component, which includes a push rod 81 and a drive plate 82; the push rod 81 is slidably connected to the first side plate 11, and a second bracket 83 is fixedly connected to the front side of the first side plate 11; the drive plate 82 is Z-shaped, and the drive plate 82 is rotatably connected to the second bracket 83; one end of the drive plate 82 is movably connected to the push rod 81, and a push plate 84 is fixedly connected to the push rod 81; a second return spring 85 is sleeved on the push rod 81 on the rear side of the drive plate 82, and the other end of the drive plate 82 points to the second bent plate 77.

[0023] Preferably, it also includes a closing locking assembly, which includes a locking electromagnet 91 and a fourth bent plate 92 , the fourth bent plate 92 is fixedly connected to the rear side of the opening and closing handle 74 , and the locking electromagnet 91 is fixedly connected to the front side of the first side plate 11 .

[0024] Preferably, it also includes an interlocking assembly, which includes a first interlocking crank arm 101 and an interlocking plate 102, a fifth bent plate 103 is fixedly connected to the closing half shaft 41, a second interlocking crank arm 104 is fixedly connected to the spline shaft 31, the front side of the second side plate 12 is rotatably connected to a shaft rod 105, a sixth torsion spring 106 is provided between the shaft rod 105 and the second side plate 12, the first interlocking crank arm 101 is fixedly connected to the front end of the shaft rod 105, a swing plate 107 is also fixedly connected to the shaft rod 105, the interlocking plate 102 is slidably connected to the second side plate 12, and the top of the swing plate 107 is hinged to the interlocking plate 102.

[0025] Preferably, the buffer crank arm 37 is rotatably connected with a third roller 321 and a fourth roller 322 , and the second side plate 12 is provided with a limiting bolt 323 and an oil buffer 324 .

[0026] The working principle of the present invention is that the present invention can realize energy storage operation, closing operation, opening operation, emergency opening operation, closing locking operation and interlocking operation. The working process of each operation is as follows: Energy storage operation: like Figure 1-Figure 2 ,as well as Fig.11 As shown, when the motor 14 is working, it drives the electric energy storage shaft 23 and the second small gear 27 to rotate clockwise, and the second small gear 27 drives the second large gear 25 to rotate counterclockwise. Manual energy storage can also be performed here, that is, the operating end of the manual energy storage shaft 224 is driven to rotate, so that the third small gear 225 drives the second large gear 25 to rotate counterclockwise.

[0027] The second large gear 25, the intermediate shaft 22 and the first small gear 26 rotate counterclockwise, thereby driving the first large gear 24 to rotate clockwise. Figure 5 As shown, the energy storage spindle 21, the cam 220 and the energy storage arm 28 rotate clockwise to the energy storage position, as shown in FIG. Figure 1 ,as well as Figure 5-Figure 6 As shown, the energy storage arm 28 pulls the chain 218 and the pull rod 212 through the connecting rod 219, so that the closing spring 214 is compressed to store energy.

[0028] like Figure 2 , Figure 4 and Figure 5 As shown, the closing latch 222 is locked by the closing half shaft 41, and the friction bearing 221 on the cam 220 is pressed against the friction wheel 223 on the closing latch 222, so that the energy storage main shaft 21 is kept in the energy storage position and the closing spring 214 is compressed.

[0029] When the energy storage main shaft 21 rotates, the driving pin 67 is driven to rotate. Figure 5 and Figure 8As shown, the driving pin 67 pushes the energy storage switching plate 61 at the position of the protrusion 66, the energy storage switching plate 61 rotates around the first screw 63, the first bent plate 68 drives the energy storage switching switch 62 to switch the opening and closing points, and the energy storage indicating plate 69 switches to the energy storage position.

[0030] Closing operation: The closing operation can also be done electrically or manually. Figure 1 As shown, when the switch is closed electrically, the lock core of the closing electromagnet 42 extends to push the first trip plate 44, so that the closing half shaft 41 rotates clockwise; when the switch is closed manually, as shown in FIG. Figure 2 , Figure 12-13 As shown, the opening and closing handle 74 is rotated clockwise to drive the manual opening and closing shaft 71 and the second roller 76 to rotate clockwise, the second roller 76 drives the third bent plate 79 to rotate around the reversing shaft 72, and the third bent plate 79 pulls the closing half shaft 41 to rotate clockwise through the second connecting plate 73.

[0031] When the closing half shaft 41 rotates, the closing latch 222 is unlocked from the closing half shaft 41, so that the friction wheel 223 on the closing latch 222 is separated from the friction bearing 221, and the closing spring 214 recovers its original length, pulling the energy storage main shaft 21 to rotate counterclockwise, and the cam 220 rotates with the energy storage main shaft 21. Figure 8 As shown, the cam 220 drives the first roller 310 to rotate the spline shaft 31 and the mechanism output crank arm 35 to the closing position.

[0032] like Figure 2 and Figure 4 As shown, at the same time, the spring pin 312 pulls the opening spring 33 to extend, so that the opening spring 33 stretches and stores energy, and the opening and closing indicator plate 39 rotates to the closing position, as shown in FIG. Figure 1 and Fig. 9 As shown, the auxiliary switch arm 38 drives the auxiliary switch 32 through the first connecting plate 313 to connect the auxiliary contact of the closing switch. Figure 2 and Fig.16 As shown, the large buckle plate 3402 is locked with the opening half shaft 51 to fix the sector plate 34. Fig. 9 and Fig.14 As shown, the closing holding roller 311 contacts and locks with the top of the small buckle plate 3401, so that the spline shaft 31 is kept in the closing position, and the mechanism output crank arm 35 rotates to the closing position.

[0033] Opening operation: The opening operation can also be done electrically or manually. When opening electrically, Figure 1 and 16 As shown in FIG. 1 , the lock core of the opening electromagnet 52 extends to push the second trip plate 54, causing the opening half shaft 51 to rotate clockwise; when the opening is manual, as shown in FIG. Figure 2 , Fig.13 and Fig.16 As shown, the opening and closing handle 74 is rotated counterclockwise, so that the manual opening and closing shaft 71 and the second roller 76 rotate counterclockwise, and the second roller 76 drives the second bent plate 77 and the opening half shaft 51 to rotate clockwise.

[0034] like Fig.16 As shown, when the opening half shaft 51 rotates, it is unlocked from the large buckle plate 3402, that is, the fan-shaped plate 34 is unlocked, so that the small buckle plate 3401 is unlocked from the closing holding roller 311, and the opening spring 33 is shortened to restore the original length. The opening spring 33 pulls the main crank arm 36 to rotate, so that the spline shaft 31 and the mechanism output crank arm 35 rotate until the opening, the opening and closing indicator plate 39 rotates to the opening indication position, and the auxiliary switch crank arm 38 drives the auxiliary switch 32 through the first connecting plate 313 to connect the opening auxiliary contact.

[0035] like Figure 2 and Fig. 9 As shown, when the brake is in the open position, the third roller 321 and the fourth roller 322 on the buffer crank arm 37 are in contact with the limit bolt 323 and the oil buffer 324 respectively, playing a buffering function.

[0036] Emergency trip operation: like Fig.16 As shown, during emergency opening, the push rod 81 is pushed toward the direction close to the first side plate 11, and the push rod 81 pushes the drive plate 82 to rotate through the push plate 84. The second return spring 85 is compressed, and the head of the drive plate 82 pushes the second bent plate 77, thereby rotating the opening half shaft 51. The opening half shaft 51 releases the lock on the fan plate 34, and the spline shaft 31 and the mechanism output crank arm 35 rotate to the opening position under the action of the opening spring 33.

[0037] Closing and locking operation: like Figure 1 and Fig.17 As shown, when the locking electromagnet 91 loses power, its lock core blocks the fourth bent plate 92 to prevent the opening and closing handle 74 from rotating clockwise, that is, when the power is lost for the second time, the circuit breaker can be prevented from closing.

[0038] Interlocking operation: like Fig.18 As shown, in the open state, under the action of the sixth torsion spring 106, the first interlocking arm 101 and the shaft 105 rotate counterclockwise by a certain angle, and the swing plate 107 rotates with the shaft 105. The swing plate 107 drives the interlocking plate 102 to move to the left, so that the left end of the interlocking plate 102 is located below the fifth bent plate 103, preventing the closing half shaft 41 from rotating clockwise, thereby prohibiting the circuit breaker from closing.

[0039] On the contrary, when the switch is closed, the second interlocking arm 104 is located below the first interlocking arm 101, blocking the interlocking arm from rotating counterclockwise, connecting the interlocking plate 102 with the switches of other electrical components, thereby prohibiting the operation of other electrical components when the switch is closed.

[0040] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A spring operating mechanism for a medium voltage sulfur hexafluoride circuit breaker, characterized in that: include: A frame, the frame comprising a first side plate (11) and a second side plate (12) spaced apart from each other in the front and rear, the first side plate (11) and the second side plate (12) being connected to form an integral structure via a plurality of connecting studs (13), and a motor (14) being fixedly connected to the frame; An energy storage assembly, the energy storage assembly comprising an energy storage main shaft (21), an intermediate shaft (22) and an electric energy storage shaft (23) rotatably connected between a first side plate (11) and a second side plate (12); the energy storage main shaft (21) is provided with a first large gear (24); the intermediate shaft (22) is fixedly connected to a second large gear (25) and a first small gear (26); the first small gear (26) is meshed with the first large gear (24); the electric energy storage shaft (23) is fixedly connected to a second small gear (27); The second small gear (27) is meshed with the second large gear (25), the output shaft of the motor (14) is connected to the electric energy storage shaft (23), the front end of the energy storage main shaft (21) is fixedly connected to an energy storage arm (28), the energy storage arm (28) is fixedly connected to a hanging spring shaft (29), the first side plate (11) is fixedly connected to a support (210), the right side of the support (210) is fixedly connected to a guide sleeve (211), the guide sleeve (211) is slidably connected to a pull rod (212), the right end of the pull rod (212) is fixedly connected to the guide sleeve (211), and the right end of the pull rod (212) is fixedly connected to the guide sleeve (211). An end cover (213) is fixedly connected, a closing spring (214) is sleeved on the guide sleeve (211) and the pull rod (212), a guide shaft (215) is rotatably connected to the support (210), the first side plate (11) and the second side plate (12), a sprocket (216) and a guide wheel (217) are fixedly connected to the guide shaft (215), a chain (218) is provided in the guide sleeve (211), the chain (218) is engaged with the sprocket (216), and one end of the chain (218) is engaged with the pull rod (212). The chain (218) is fixedly connected, the other end of the chain (218) is hinged with a connecting rod (219), the other end of the connecting rod (219) is hinged with a hanging spring shaft (29), a cam (220) is fixedly connected to the energy storage main shaft (21), the rear side of the cam (220) is rotatably connected to a friction bearing (221), a closing latch (222) is rotatably connected between the first side plate (11) and the second side plate (12) at a position corresponding to the cam (220), and a friction wheel (223) is rotatably connected to the closing latch (222); A main shaft assembly, the main shaft assembly comprising a spline shaft (31), an auxiliary switch, a switch-off spring (33) and a fan-shaped plate (34); the spline shaft (31) is rotatably connected between a first side plate (11) and a second side plate (12); a rear end of the spline shaft (31) extends outside the second side plate (12) and is fixedly connected to a mechanism output crank arm (35); a main crank arm (36) is fixedly connected to the spline shaft (31) between the first side plate (11) and the second side plate (12); ) and a buffer crank arm (37), the front end of the spline shaft (31) is fixedly connected to an auxiliary switch crank arm (38) and an opening and closing indicator plate (39), the main crank arm (36) is rotatably connected to a first roller (310) and a closing holding roller (311), the main crank arm (36) is also fixedly connected to a hanging spring pin (312), the auxiliary switch is fixedly connected to the upper right corner of the first side plate (11), the toggle handle of the auxiliary switch is hingedly connected to a first connecting plate (313), the first connecting plate (3 The other end of the second side plate (13) is hinged to the auxiliary switch arm (38), the lower right corner of the second side plate (12) is fixedly connected to a first bracket (314), one end of the opening spring (33) is fixed to the first bracket (314) via a loosening prevention plate (315) and a screw (316), the other end of the opening spring (33) is fixedly connected to a steel wire (317), the head of the steel wire (317) is fixedly connected to a connector (318), and the connector (318) is connected to the hanging spring The pin (312) is hinged, the steel wire (317) is wrapped around the guide wheel (217), the first side plate (11) and the second side plate (12) are rotatably connected with a mounting shaft (319), the fan-shaped plate (34) is fixedly connected to the mounting shaft (319), the fan-shaped plate (34) includes two protruding small buckle plates (3401) and a large buckle plate (3402), and the fan-shaped plate (34) is connected to the second side plate (12) via a first torsion spring (320); A closing assembly, the closing assembly comprising a closing half-shaft (41) and a closing electromagnet (42), the closing half-shaft (41) being rotatably connected between a first side plate (11) and a second side plate (12), a notch being provided on the closing half-shaft (41) for interlocking with a corner of a closing latch (222), a second torsion spring (43) being provided between the closing half-shaft (41) and the first side plate (11), a first tripping plate (44) being fixedly connected to the front end of the closing half-shaft (41), the closing electromagnet (42) being fixedly connected to the upper left corner of the first side plate (11), and a lock core of the closing electromagnet (42) facing the first tripping plate (44); A switch-off assembly, the switch-off assembly comprising a switch-off half-shaft (51) and a switch-off electromagnet (52), the switch-off half-shaft (51) being rotatably connected between a first side plate (11) and a second side plate (12), a notch being provided on the switch-off half-shaft (51) for interlocking with a corner of a large buckle plate (3402), a third torsion spring (53) being provided between the switch-off half-shaft (51) and the first side plate (11), a second release plate (54) being fixedly connected to a front end of the switch-off half-shaft (51), the switch-off electromagnet (52) being fixedly connected to a front side of the first side plate (11), and a lock core of the switch-off electromagnet (52) facing the second release plate (54).

2. A spring operating mechanism for a medium voltage sulfur hexafluoride circuit breaker according to claim 1, characterized in that: A manual energy storage shaft (224) is rotatably connected between the first side plate (11) and the second side plate (12); an operating end of the manual energy storage shaft (224) extends out of the first side plate (11); and a third small gear (225) meshing with the second large gear (25) is fixedly connected to the manual energy storage shaft (224).

3. The spring operating mechanism for a medium voltage sulfur hexafluoride circuit breaker according to claim 1, characterized in that: The energy storage indicating assembly also includes an energy storage switching plate (61) and an energy storage switching switch (62), wherein a first screw (63) and a second screw (64) are fixedly connected to the first side plate (11), the top of the energy storage switching plate (61) is rotatably connected to the first screw (63), an oblong hole (65) is provided on the energy storage switching plate (61), the second screw (64) is slidably connected to the oblong hole (65), a protrusion (66) is provided at the center of the left side of the energy storage switching plate (61), and the rear of the energy storage arm (28) is provided with a protrusion (66). The energy storage switching plate (61) is fixedly connected to a driving pin (67) on the side thereof; the energy storage switching switch (62) is fixedly connected to the front side of the first side plate (11) and is located on the right side of the energy storage switching plate (61); a first bent plate (68) is fixedly connected to a position on the energy storage switching plate (61) corresponding to the energy storage switching switch (62); an energy storage indicating plate (69) is fixedly connected to the bottom of the energy storage switching plate (61); a first return spring (610) is connected to the bottom of the left side of the energy storage switching plate (61); and the other end of the first return spring (610) is fixed to the first side plate (11).

4. A spring operating mechanism for a medium voltage sulfur hexafluoride circuit breaker according to claim 1, characterized in that: The manual separation and combination assembly also includes a manual separation and combination shaft (71), a reversing shaft (72) and a second connecting plate (73); the manual separation and combination shaft (71) is rotatably connected between the first side plate (11) and the second side plate (12); a separation and combination handle (74) is fixedly connected to the front end of the manual separation and combination shaft (71); a fourth torsion spring (75) is provided between the manual separation and combination shaft (71) and the second side plate (12); a second roller (76) is rotatably connected to the manual separation and combination shaft (71); and a second bent plate (73) is fixedly connected to the opening half shaft (51). 77), the reversing shaft (72) is rotatably connected between the first side plate (11) and the second side plate (12), a fifth torsion spring (78) is provided between the reversing shaft (72) and the second side plate (12), a third bent plate (79) is fixedly connected to the reversing shaft (72), a first pin shaft (710) and a second pin shaft (711) are respectively fixedly connected to the top of the third bent plate (79) and the closing half shaft (41), and two ends of the second connecting plate (73) are respectively hinged to the first pin shaft (710) and the second pin shaft (711).

5. A spring operating mechanism for a medium voltage sulfur hexafluoride circuit breaker according to claim 4, characterized in that: It also includes an emergency opening brake assembly, which includes a push rod (81) and a drive plate (82); the push rod (81) is slidably connected to the first side plate (11); a second bracket (83) is fixedly connected to the front side of the first side plate (11); the drive plate (82) is Z-shaped; the drive plate (82) is rotatably connected to the second bracket (83); one end of the drive plate (82) is movably connected to the push rod (81); a push plate (84) is fixedly connected to the push rod (81); a second return spring (85) is sleeved on the push rod (81) at the rear side of the drive plate (82); and the other end of the drive plate (82) points to the second bent plate (77).

6. A spring operating mechanism for a medium voltage sulfur hexafluoride circuit breaker according to claim 4, characterized in that: It also includes a closing and locking assembly, which includes a locking electromagnet (91) and a fourth bent plate (92), the fourth bent plate (92) being fixedly connected to the rear side of the opening and closing handle (74), and the locking electromagnet (91) being fixedly connected to the front side of the first side plate (11).

7. The spring operating mechanism for a medium voltage sulfur hexafluoride circuit breaker according to claim 1, characterized in that: It also includes an interlocking assembly, which includes a first interlocking crank arm (101) and an interlocking plate (102); a fifth bent plate (103) is fixedly connected to the closing half shaft (41); a second interlocking crank arm (104) is fixedly connected to the spline shaft (31); a shaft rod (105) is rotatably connected to the front side of the second side plate (12); a sixth torsion spring (106) is provided between the shaft rod (105) and the second side plate (12); the first interlocking crank arm (101) is fixedly connected to the front end of the shaft rod (105); a swing plate (107) is also fixedly connected to the shaft rod (105); the interlocking plate (102) is slidably connected to the second side plate (12); and the top of the swing plate (107) is hinged to the interlocking plate (102).

8. The spring operating mechanism for a medium voltage sulfur hexafluoride circuit breaker according to claim 1, characterized in that: The buffer crank arm (37) is rotatably connected to a third roller (321) and a fourth roller (322), and the second side plate (12) is provided with a limit bolt (323) and an oil buffer (324).

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