Primary and secondary fusion pole-mounted circuit breaker capable of automatically reclosing

Abstract

The invention belongs to the technical field of circuit breakers, and particularly relates to a primary and secondary fusion pole-mounted circuit breaker capable of automatically reclosing, which comprises a mechanism box, an arc extinguish chamber, a moving ball, a connecting rope and an electromagnetic block, the mechanism box is provided with three arc extinguish chambers, and the front end of the mechanism box is sequentially provided with an operation handle, an energy storage pull ring, a switch-on and switch-off pointer and a control interface. Handle rings are fixed to the two ends of the operating handle, a horizontally-placed mounting box is fixed to the bottom of the front end of the mechanism box, the movable ball is arranged in the mounting box in a sliding mode, a connecting rope is connected between one side of the movable ball and the handle rings, and an electromagnetic block capable of horizontally moving is arranged in the mounting box. According to the invention, through non-contact connection of the electromagnetic block and the moving ball, the operation of reclosing by pulling the operating handle can be effectively realized, and the circuit expansion damage caused by hard reclosing can be effectively avoided when a continuous fault of the circuit is encountered.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, and in particular to a primary-secondary fusion column mounted circuit breaker capable of automatic reclosing. Background Art

[0002] The primary and secondary integrated pole-mounted circuit breaker equipment is a complete set of pole-mounted circuit breaker equipment that integrates advanced technologies such as electronic voltage sensor, electronic current sensor, electric energy metering module, and high-speed fault transient recording.

[0003] Referring to a Chinese patent with patent publication number CN117810036A, a primary-secondary fusion pole-mounted magnetically controlled circuit breaker is disclosed, including a circuit breaker body and a charge and discharge control part. The charge and discharge control part includes a closing energy storage capacitor group arranged inside the circuit breaker housing, a capacitor charging circuit connected to the closing energy storage capacitor group, a closing control circuit, a brushless motor connected to the capacitor charging circuit, and an energy storage pull rod arranged outside the circuit breaker housing and connected to the brushless motor. When manual closing is required, the energy storage pull rod is pulled to charge the capacitor. After charging is completed, the electric energy in the capacitor drives the closing operation.

[0004] Usually, when a primary-secondary fusion pole-mounted circuit breaker trips and opens due to a transient fault, the line quickly returns to normal. In the prior art, workers are required to manually close the circuit breaker, which affects work efficiency. Summary of the invention

[0005] Based on the technical problems of the background technology, the present invention proposes a primary-secondary fusion pole-mounted circuit breaker capable of automatic reclosing.

[0006] The present invention proposes a primary and secondary fusion column-mounted circuit breaker capable of automatic reclosing, comprising a mechanism box and an arc extinguishing chamber, and also comprising a moving ball, a connecting rope and an electromagnetic block; three arc extinguishing chambers are arranged on the mechanism box, and an operating handle, an energy storage pull ring, an opening and closing indicator needle and a control interface are arranged in sequence at the front end of the mechanism box; handle rings are fixed at both ends of the operating handle, a horizontally placed installation box is fixed at the bottom of the front end of the mechanism box, and the installation box corresponds to the position of one end of the operating handle that is tilted downward when the switch is closed, the moving ball is slidably arranged in the installation box, a connecting rope is connected between one side of the moving ball and the handle ring, and an electromagnetic block capable of horizontal movement is arranged in the installation box, the electromagnetic block is located on the side of the moving ball away from the connecting rope, and the electromagnetic block is magnetically adsorbed to the moving ball when power is supplied.

[0007] Preferably, a movable frame is slidably connected inside the installation box, the electromagnetic block is fixed in the movable frame, an extension tube is fixed on the top of the movable frame, a through groove is provided at a position on the top of the installation box corresponding to the extension tube, a movable block is fixed on the top of the extension tube, a positioning plate is fixed at a position on the top of the installation box close to the connecting rope, a positioning hole is provided on the side wall of the positioning plate, a threaded rod is rotatably connected to the inner wall of the positioning hole, a threaded hole matching the threaded rod is provided on the side wall of the movable block, and the end of the threaded rod away from the positioning plate is transmission-connected to a driving motor.

[0008] Preferably, a speed sensor is provided on the inner wall at the bottom of the installation box near one end of the connecting rope, and a processor is provided in the mechanism box. When tripping, the moving ball quickly approaches the speed sensor to send a signal to the processor to start the drive motor to reciprocate for one cycle.

[0009] Preferably, a limit block is fixed to the inner wall at the bottom of the installation box near one end of the connecting rope, the speed sensor is fixed at one end of the limit block facing the moving ball, the installation box is connected to a three-way pipe at one end facing the connecting rope, a sliding sleeve is fixed to one end of the connecting rope near the handle ring, and the inner wall of the sliding sleeve is slidably connected to the outer wall of the handle ring.

[0010] Preferably, a plurality of hole slots 1 are provided on one side of the through slot at the top of the installation box, a hole slot 2 is provided at a position corresponding to the hole slot 1 at the bottom of the installation box, a hole is provided between the hole slot 1 and the hole slot 2, a connecting rod is slidably connected to the inner wall of the hole, a stop block 1 is fixed to the bottom end of the connecting rod, a stop block 2 is fixed to the top end of the connecting rod, and a spring 1 is connected between the bottom of the stop block 2 and the inner wall of the hole slot 1.

[0011] Preferably, a connecting groove is provided at a position corresponding to the first stop block on the top of the movable frame, and openings are provided on both sides of the connecting groove. An extrusion block is fixed at a position corresponding to the second stop block on the bottom of the movable block, and the bottom of the extrusion block and the top of the second stop block are both arranged to be arched arc structures.

[0012] Preferably, a mounting frame is fixed at the front end of the mechanism box above the mounting box, the mounting frame corresponds to the position of the handle ring, the side wall of the mounting frame is arranged to be an arc-shaped structure arched away from the handle ring, a gap is left between the mounting frame and the handle ring, and a through hole is opened at the bottom of the mounting frame.

[0013] Preferably, an installation groove is opened on the inner wall at the top of the mounting frame, a fixed shaft is fixed between the two ends of the installation groove, the outer wall of the fixed shaft is rotatably connected to a sleeve through a torsion spring, and inclined extrusion plates are fixed on both sides of the sleeve, and the distance between the two extrusion plates gradually increases from top to bottom.

[0014] Preferably, a plurality of mounting grooves 2 are provided on the side wall of the mounting frame, and a rotating shaft is horizontally arranged on both sides of the mounting grooves 2, a fixing seat is fixed at a position corresponding to the inner wall of the end portion of the mounting grooves and the rotating shaft, the outer wall of the rotating shaft and the fixing seat are rotatably connected via a bearing, a connecting block is fixed at a middle position of the outer wall of the rotating shaft, the outer walls of the two connecting blocks are meshed, a wind blade is fixed to the outer wall of the connecting block away from the mounting grooves 2, the spacing between the two wind blades gradually increases from top to bottom, and a spring 2 is connected between the two wind blades.

[0015] The beneficial effects of the present invention are: In the present invention, through the contactless connection between the electromagnetic block and the moving ball, the operating handle can be smoothly rotated to the opening position when tripping, and the operation of pulling the operating handle to reclose the circuit can be effectively realized. In addition, when encountering a continuous circuit fault, the expansion damage of the circuit caused by hard reclosing can be effectively avoided, thereby improving the use effect of the circuit breaker.

[0016] In the present invention, when the electromagnetic block moves with the moving ball to reclose the circuit breaker, the stop block that has moved past the position collides with the inner wall of the installation box to perform auxiliary demagnetization, thereby avoiding residual static magnetism at the position corresponding to the connecting rope in the installation box, which may affect the horizontal movement of the moving ball when tripping occurs again, thereby further ensuring the use effect of the circuit breaker.

[0017] In the present invention, the handle ring is limited by two extrusion sheets, and the handle ring is buffered and limited by the wind blades raised at the bottom when tripping, thereby effectively avoiding the rotation of the operating handle after tripping, thereby improving the use effect of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a primary and secondary fusion column mounted circuit breaker capable of automatic reclosing proposed by the present invention; Figure 2 A schematic diagram of the position structure of the operating handle and the moving ball of a primary-secondary fusion column mounted circuit breaker capable of automatic reclosing in the open state proposed by the present invention; Figure 3 A schematic diagram of the structure inside the installation box of a primary-secondary fusion column mounted circuit breaker capable of automatic reclosing in the open state proposed by the present invention; Figure 4 A schematic diagram of a structure to be reclosed in an installation box of a primary and secondary fusion column mounted circuit breaker capable of automatic reclosing proposed by the present invention; Figure 5 A schematic diagram of the position structure of an operating handle and a moving ball of a primary-secondary fusion column mounted circuit breaker capable of automatic reclosing in a reclosing completion state proposed by the present invention; Figure 6A schematic diagram of the completed structure of the reclosing switch in the installation box of a primary and secondary fusion column mounted circuit breaker capable of automatic reclosing proposed by the present invention; Figure 7 A schematic diagram of the structure of a movable frame and a movable block of a primary-secondary fusion column mounted circuit breaker capable of automatic reclosing proposed by the present invention; Figure 8 This is a schematic structural diagram of a connecting rod, a first stopper and a second stopper of a primary-secondary fusion column-mounted circuit breaker capable of automatic reclosing proposed by the present invention; Fig. 9 A schematic diagram of the structure of a mounting frame for a primary-secondary fusion column mounted circuit breaker capable of automatic reclosing proposed by the present invention; Fig.10 A schematic diagram of the structure of an extruded sheet of a primary and secondary fused column mounted circuit breaker capable of automatic reclosing proposed by the present invention; Fig.11 This is a schematic diagram of the wind blade structure of a primary-secondary fusion column-mounted circuit breaker that can automatically reclose proposed by the present invention.

[0019] In the figure: 1 mechanism box, 2 arc extinguishing chamber, 3 operating handle, 301 handle ring, 4 energy storage pull ring, 5 opening and closing indicator needle, 6 control interface, 7 installation box, 701 through slot, 702 hole slot one, 703 hole slot two, 8 moving ball, 9 connecting rope, 10 sliding sleeve, 11 electromagnetic block, 12 three-way pipe, 13 limit block, 14 moving frame, 141 connecting slot, 15 extension pipe, 16 moving block, 161 extrusion block, 17 positioning plate, 18 threaded rod, 19 driving motor, 20 connecting rod, 21 block one, 22 block two, 23 spring one, 24 installation frame, 241 through hole, 242 installation slot one, 243 installation slot two, 25 fixed shaft, 26 sleeve, 27 extrusion sheet, 28 fixed seat, 29 rotating shaft, 30 connecting block, 31 wind blade, 32 spring two. DETAILED DESCRIPTION

[0020] Example 1: Reference Figure 1-Figure 7A primary and secondary fusion column-mounted circuit breaker capable of automatic reclosing comprises a mechanism box 1 and an arc extinguishing chamber 2, and also comprises a moving ball 8, a connecting rope 9 and an electromagnetic block 11; three arc extinguishing chambers 2 are arranged on the mechanism box 1, and an operating handle 3, an energy storage pull ring 4, a switch-on and switch-off indicating needle 5 and a control interface 6 are arranged in sequence at the front end of the mechanism box 1; handle rings 301 are fixed to both ends of the operating handle 3, a horizontally placed installation box 7 is fixed to the bottom of the front end of the mechanism box 1, and the installation box 7 corresponds to the position of the end of the operating handle 3 that is tilted downward when the switch is closed, the moving ball 8 is slidably arranged in the installation box 7, a connecting rope 9 is connected between one side of the moving ball 8 and the handle ring 301, and the side opening of the installation box 7 corresponding to the connecting rope 9 is arranged, and an electromagnetic block 11 capable of horizontal movement is arranged in the installation box 7, and the electromagnetic block 11 is located on the side of the moving ball 8 away from the connecting rope 9. When the electromagnetic block 11 is energized, it is magnetically adsorbed with the moving ball 8. In the normal closing state, as shown in FIG. Figure 1 As shown, the operating handle 3 is tilted downward toward the side of the installation box 7; when a circuit malfunction occurs and the circuit breaker trips, the operating handle 3 rotates accordingly, causing the handle ring 301 near the side of the installation box 7 to deflect upward, and pulls the connecting rope 9 and the moving ball 8 to move, causing the moving ball 8 to move horizontally quickly in a direction away from the electromagnetic block 11 to a position as shown in FIG. Figure 2 and Figure 3 After the tripping state, the electromagnetic block 11 moves toward the moving ball 8 to the vicinity of the moving ball 8, as shown; Figure 4 As shown, the electromagnetic block 11 is then energized and moved away from the connecting rope 9, and the moving ball 8 and the connecting rope 9 are pulled under the action of the magnetic attraction, and the corresponding handle ring 301 is pulled downward; until the electromagnetic block 11 moves to the edge of the installation box 7, as shown in FIG. Figure 5 and Figure 6 , and pull the handle ring 301 to make the operating handle 3 automatically rotate to perform the reclosing operation; Automatic reclosing is performed by magnetic attraction of the movable electromagnetic block 11 and the movable ball 8: when a transient fault occurs in the circuit, the circuit will return to normal in a short time, and the position where the operating handle 3 is connected in the mechanism box 1 will no longer have the force to jump to the open state, so that the magnetic attraction of the electromagnetic block 11 on the movable ball 8 can pull the operating handle 3 to the closed state, thereby realizing automatic reclosing operation; when a permanent fault occurs in the circuit and the circuit has not returned to normal, the electromagnetic block 11 magnetically attracts the movable ball 8 to pull the operating handle 3 to close the circuit, and the position where the operating handle 3 is connected in the mechanism box 1 will tend to trip again due to the circuit fault, that is, the operating handle 3 will continue to have the force to jump to the open state, and the movable ball 8 will follow The movement of the electromagnetic block 11 causes the applied force to gradually increase, and after or before the reclosing is completed, the movable ball 8 will be disengaged from the electromagnetic block 11, and the operating handle 3 will be in the open state again, thereby avoiding greater damage to the circuit caused by forced reclosing operation; through pre-control settings, after the circuit fault trips, the electromagnetic block 11 only performs a reclosing operation once, so that through the contactless connection between the electromagnetic block 11 and the movable ball 8, the operating handle 3 can be smoothly rotated to the open state when tripping, and the operation of pulling the operating handle 3 for reclosing can be effectively realized, and when encountering a continuous circuit fault, it can effectively avoid the expansion of circuit damage caused by hard reclosing, thereby improving the use effect of the circuit breaker.

[0021] In the present invention, reference is made to Figure 1-Figure 7 A movable frame 14 is slidably connected in the installation box 7, and the electromagnetic block 11 is fixed in the movable frame 14. An extension tube 15 is fixed on the top of the movable frame 14. A horizontally extending through slot 701 is provided at the top of the installation box 7 corresponding to the extension tube 15. The connection line of the electromagnetic block 11 extends from the side wall of the extension tube 15 into the mechanism box 1. A through slot parallel to the through slot 701 is provided on the end face of the mechanism box 1. A movable block 16 is fixed on the top of the extension tube 15. A gap is left between the bottom of the movable block 16 and the top of the installation box 7. A positioning plate 17 is fixed on the top of the installation box 7 near the connecting rope 9. A positioning hole is provided on the side wall of the positioning plate 17. The positioning hole The inner wall is rotatably connected to a horizontally placed threaded rod 18 through a bearing, and a threaded hole adapted to the threaded rod 18 is opened on the side wall of the moving block 16. The end of the threaded rod 18 away from the positioning plate 17 is transmission-connected to a drive motor 19, and the drive motor 19 is fixedly connected to the outer wall of the mechanism box 1, so that the threaded rod 18 is rotated by the drive motor 19 to move the moving frame 14 and the electromagnetic block 11 horizontally. Compared with a cylinder or a push rod, the movement of the electromagnetic block 11 in this scheme can have sufficient time to restore the circuit of the instantaneous fault, and avoid the separation between the electromagnetic block 11 and the moving ball 8 caused by excessive inertia speed, thereby improving the effectiveness of the reclosing switch.

[0022] In the present invention, reference is made to Figure 1-Figure 7A speed sensor is provided on the inner wall at the bottom of the installation box 7 near one end of the connecting rope 9, and a processor is provided in the mechanism box 1. When tripping, the moving ball 8 quickly approaches the speed sensor. Compared with the moving speed of the moving ball 8 during manual closing, it exceeds the set standard to send a signal to the processor to start the drive motor 19 to reciprocate for one cycle, and the number of reciprocating cycles of the drive motor 19 after tripping is set according to the actual circuit conditions, so that the automatic reclosing operation after tripping is realized through the setting and cooperation of the speed sensor.

[0023] In the present invention, reference is made to Figure 1-Figure 7 A limit block 13 is fixed to one end of the inner wall at the bottom of the installation box 7 near the connecting rope 9, and the speed sensor is fixed to one end of the limit block 13 facing the moving ball 8. When the circuit breaker trips, the limit block 13 simultaneously limits the bottom of the moving ball 8 to prevent the moving ball 8 from running out, and the limit block 13 is set at the bottom so that the bottom of the side of the moving ball 8 collides with the limit block 13 after the trip, and the setting of the groove 701 at the top of the installation box 7 is coordinated to make the moving ball 8 tilt upward and jump up a part of the distance when rebounding, so as to avoid excessive linear rebound force of the moving ball 8 and excessive pulling back of the operating handle 3 after the trip, thereby In order to avoid damage to the operating handle 3 or affect circuit recovery, the installation box 7 is connected to a three-way pipe 12 at one end facing the connecting rope 9. The part of the three-way pipe 12 away from the installation box 7 is vertically penetrated. The connecting rope 9 enters the three-way pipe 12 from the open end of the installation box 7 and is connected to the handle ring 301 from the opening above the three-way pipe 12. A sliding sleeve 10 is fixed to the end of the connecting rope 9 close to the handle ring 301. The inner wall of the sliding sleeve 10 is slidably connected to the outer wall of the handle ring 301 to ensure that the connecting rope 9 can move smoothly with the operating handle 3, thereby avoiding blockage of the connecting rope 9 and affecting the opening and closing operations.

[0024] Embodiment 2: Embodiment 2 includes all structures and methods of Embodiment 1, with reference to Figure 1-Figure 8, a primary and secondary fusion column-mounted circuit breaker capable of automatic reclosing, further comprising: a plurality of hole slots 702 are provided on one side of a through slot 701 at the top of an installation box 7, a hole slot 2 703 is provided at a position corresponding to the hole slot 1 702 at the bottom of the installation box 7, a hole is provided between the hole slot 1 702 and the hole slot 2 703, a connecting rod 20 is slidably connected to the inner wall of the hole, a stop block 21 is fixed to the bottom end of the connecting rod 20, a stop block 22 is fixed to the top end of the connecting rod 20, a spring 23 is connected between the bottom of the stop block 22 and the inner wall of the hole slot 1 702, a connecting slot 141 is provided at the top of a moving frame 14 corresponding to the stop block 1 21, openings are provided on both sides of the connecting slot 141, an extrusion block 161 is fixed at the bottom of a moving block 16 corresponding to the stop block 22, the bottom of the extrusion block 161 and the top of the stop block 22 are both arranged to be arched arc structures, and in a normal state, under the action of a spring 23, the stop block 21 contracts in the hole 1 and 1 are in the groove 703, and the block 22 extends out of the hole groove 1 702 and the block 22 is below the outer wall of the bottom of the moving block 16; when the moving block 16 moves to the position of the block 22, the extrusion block 161 squeezes the block 22 and the block 1 21 downward. Since the moving ball 8 is a spherical structure, the block 1 21 at the side of the moving ball 8 will not contact the moving ball 8 even if it drops a certain distance, and will not affect the normal movement of the moving ball 8; and after the moving block 16 is away from the block 22, it rebounds under the action of the spring 1 23 to make the block 1 21 collide with the inner wall shell of the installation box 7; especially in the process of the electromagnetic block 11 moving with the moving ball 8 to reclose the switch, the block 1 21 that has moved past the position collides with the inner wall of the installation box 7 to perform auxiliary demagnetization, thereby avoiding residual electrostatic magnetism at the position corresponding to the connecting rope 9 in the installation box 7, which affects the horizontal movement of the moving ball 8 when the switch trips again, thereby further ensuring the use effect of the circuit breaker.

[0025] Example 3: Based on Example 1 or Example 2, refer to Figure 1-Figure 11A primary and secondary fusion column mounted circuit breaker capable of automatic reclosing, further comprising: a mounting frame 24 is fixed to the front end of a mechanism box 1 above a mounting box 7, the mounting frame 24 corresponds to the position of a handle ring 301, a side wall of the mounting frame 24 is arranged in an arc structure arched in a direction away from the handle ring 301, a gap is left between the mounting frame 24 and the handle ring 301, a through hole 241 is provided at the bottom of the mounting frame 24, a mounting groove 242 is provided on the inner wall of the top of the mounting frame 24, a horizontally placed fixed shaft 25 is fixed between the two ends of the mounting groove 242, The outer wall of the fixed shaft 25 is rotatably connected to a sleeve 26 through a torsion spring, and inclined extrusion sheets 27 are fixed on both sides of the sleeve 26. The spacing between the two extrusion sheets 27 gradually increases from top to bottom. When the operating handle 3 is close to one end of the mounting box 7 and rotates upward as the circuit breaker trips, the handle ring 301 at the corresponding position rotates to the upper side and is located between the two extrusion sheets 27. The handle ring 301 is limited by the two extrusion sheets 27 to avoid excessive pulling of the operating handle 3 due to the rebound of the connecting ball 8 after tripping, thereby further ensuring the use effect of the circuit breaker.

[0026] In the present invention, reference is made to Figure 1-Figure 11 The side wall of the mounting frame 24 is provided with a plurality of mounting grooves 243, and the plurality of mounting grooves 243 are distributed at the upper position of the mounting frame 24. A rotating shaft 29 is horizontally arranged on both sides of the mounting groove 243. A fixing seat 28 is fixed at a position corresponding to the inner wall of the end of the mounting groove 243 and the rotating shaft 29. The outer wall of the rotating shaft 29 and the fixing seat 28 are rotatably connected through a bearing. A connecting block 30 is fixed at the middle position of the outer wall of the rotating shaft 29. The outer walls of the two connecting blocks 30 are meshed with each other. A wind blade 31 is fixed on the outer wall of the connecting block 30 away from the mounting groove 243. The spacing between the two wind blades 31 gradually increases from top to bottom. A spring 232 is connected between the two wind blades 31. Under normal conditions, the bottom ends of the two wind blades 31 are opened outward under the action of the spring 232, and because the handle ring 301 is connected to the mounting frame 2 4, that is, the rotation of the handle ring 301 in the normal state will not contact the wind blades 31; when closing the switch, the corresponding handle ring 301 rotates slowly downward, and the airflow guided downward is not enough to rotate the wind blades 31 or rotate the bottom end of the wind blades 31 into the second mounting groove 243, which will not affect the rotation of the handle ring 301; when tripping, the corresponding handle ring 301 moves upward quickly, and a rapid upward airflow is generated behind the movement of the handle ring 301, so that the bottom end of the wind blade 31 behind the movement is deflected upward to a position where it can contact the handle ring 301. If the corresponding handle ring 301 rotates due to the rebound of the moving ball 8, the handle ring 301 can be buffered and limited by the wind blade 31 with the bottom end tilted up, thereby effectively avoiding the rotation of the operating handle after tripping, thereby improving the use effect of the circuit breaker.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A primary-secondary fusion column mounted circuit breaker capable of automatic reclosing, comprising a mechanism box (1) and an arc extinguishing chamber (2), characterized in that: It also includes a moving ball (8), a connecting rope (9) and an electromagnetic block (11); The mechanism box (1) is provided with three arc extinguishing chambers (2), and the front end of the mechanism box (1) is provided with an operating handle (3), an energy storage pull ring (4), an opening and closing indicator needle (5) and a control interface (6) in sequence; Both ends of the operating handle (3) are fixed with handle rings (301); a horizontally placed installation box (7) is fixed at the bottom of the front end of the mechanism box (1); the installation box (7) corresponds to the position of one end of the operating handle (3) that is tilted downward when the switch is closed; the moving ball (8) is slidably arranged in the installation box (7); a connecting rope (9) is connected between one side of the moving ball (8) and the handle ring (301); a horizontally movable electromagnetic block (11) is arranged in the installation box (7); the electromagnetic block (11) is located on a side of the moving ball (8) away from the connecting rope (9); and when power is supplied to the electromagnetic block (11), the moving ball (8) is magnetically attracted to the electromagnetic block (11).

2. A primary and secondary fusion column mounted circuit breaker capable of automatic reclosing according to claim 1, characterized in that: A movable frame (14) is slidably connected inside the installation box (7), the electromagnetic block (11) is fixed in the movable frame (14), an extension tube (15) is fixed on the top of the movable frame (14), a through slot (701) is provided at a position corresponding to the extension tube (15) on the top of the installation box (7), a movable block (16) is fixed on the top of the extension tube (15), a positioning plate (17) is fixed at a position close to the connecting rope (9) on the top of the installation box (7), a positioning hole is provided on the side wall of the positioning plate (17), a threaded rod (18) is rotatably connected to the inner wall of the positioning hole, a threaded hole adapted to the threaded rod (18) is provided on the side wall of the movable block (16), and one end of the threaded rod (18) away from the positioning plate (17) is drivingly connected to a driving motor (19).

3. A primary and secondary fusion column mounted circuit breaker capable of automatic reclosing according to claim 2, characterized in that: A speed sensor is provided on the inner wall of the bottom of the installation box (7) near one end of the connecting rope (9), and a processor is provided in the mechanism box (1). When the circuit breaker trips, the moving ball (8) quickly approaches the speed sensor and sends a signal to the processor to start the drive motor (19) to reciprocate for one cycle.

4. A primary and secondary fusion column mounted circuit breaker capable of automatic reclosing according to claim 3, characterized in that: A limit block (13) is fixed to the inner wall of the bottom of the installation box (7) near one end of the connecting rope (9); a speed sensor is fixed to one end of the limit block (13) facing the moving ball (8); one end of the installation box (7) facing the connecting rope (9) is connected to a three-way pipe (12); one end of the connecting rope (9) near the handle ring (301) is fixed to a sliding sleeve (10); the inner wall of the sliding sleeve (10) is slidably connected to the outer wall of the handle ring (301).

5. A primary and secondary fusion column mounted circuit breaker capable of automatic reclosing according to any one of claims 2 to 4, characterized in that: The top of the installation box (7) is provided with a plurality of first hole grooves (702) at one side of the through groove (701), the bottom of the installation box (7) is provided with second hole grooves (703) at positions corresponding to the first hole grooves (702), a hole is provided between the first hole grooves (702) and the second hole grooves (703), the inner wall of the hole is slidably connected with a connecting rod (20), the bottom end of the connecting rod (20) is fixed with a first stopper (21), the top end of the connecting rod (20) is fixed with a second stopper (22), and a spring (23) is connected between the bottom of the second stopper (22) and the inner wall of the first hole groove (702).

6. A primary and secondary fusion column mounted circuit breaker capable of automatic reclosing according to claim 5, characterized in that: A connection groove (141) is provided at a position on the top of the movable frame (14) corresponding to the first stop block (21), and an extrusion block (161) is fixed at a position on the bottom of the movable block (16) corresponding to the second stop block (22). The bottom of the extrusion block (161) and the top of the second stop block (22) are both arranged to be arched arc structures.

7. A primary-secondary fusion column mounted circuit breaker capable of automatic reclosing according to any one of claims 2 to 4, characterized in that: A mounting frame (24) is fixed to the front end of the mechanism box (1) above the mounting box (7); a side wall of the mounting frame (24) is arranged to be an arc-shaped structure arched in a direction away from the handle ring (301); a gap is left between the mounting frame (24) and the handle ring (301); and a through hole (241) is provided at the bottom of the mounting frame (24).

8. The primary and secondary fusion column mounted circuit breaker capable of automatic reclosing according to claim 7, characterized in that: The top inner wall of the mounting frame (24) is provided with a mounting groove (242), a fixed shaft (25) is fixed between the two ends of the mounting groove (242), the outer wall of the fixed shaft (25) is rotatably connected to a sleeve (26) via a torsion spring, and obliquely arranged extrusion sheets (27) are fixed on both sides of the sleeve (26), and the distance between the two extrusion sheets (27) gradually increases from top to bottom.

9. The primary and secondary fusion column mounted circuit breaker capable of automatic reclosing according to claim 7, characterized in that: The side wall of the mounting frame (24) is provided with a plurality of second mounting grooves (243), and a rotating shaft (29) is horizontally arranged on both sides of the second mounting groove (243). A fixing seat (28) is fixed at a position corresponding to the rotating shaft (29) on the inner wall of the end of the second mounting groove (243), and the outer wall of the rotating shaft (29) and the fixing seat (28) are rotatably connected via a bearing. A connecting block (30) is fixed at a middle position of the outer wall of the rotating shaft (29), and the outer walls of the two connecting blocks (30) are meshed with each other. A wind blade (31) is fixed to the outer wall of the connecting block (30) away from the second mounting groove (243), and the spacing between the two wind blades (31) gradually increases from top to bottom. A second spring (32) is connected between the two wind blades (31).

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