A safety type pole-mounted circuit breaker

Abstract

The application discloses a safe pole-mounted circuit breaker and relates to the field of power equipment, which comprises a circuit breaker body, two symmetrically distributed supporting legs fixedly connected to the bottom of the circuit breaker body, and an adjusting mechanism arranged at the bottom of the two supporting legs and used for adjusting the circuit breaker body to the center position of the support; the adjusting assembly comprises two rotating blocks rotatably connected with the front and rear supporting legs respectively, and a spiral conveying rod rotatably connected to the bottom end of the rotating block; the adjusting assembly further comprises a rotating unit one used for driving the rotating block to rotate relative to the supporting leg, and a rotating unit two used for driving the spiral conveying rod to rotate relative to the rotating block; the application is applicable to supports with different models and hole position structures, improves the universality of the equipment, and further optimizes the installation process through the integrated automatic recovery function of the lifting rope, so that the few-person operation and automation of the high-altitude operation are realized.

Description

A safety-type pole-mounted circuit breaker Technical Field

[0001] This invention relates to the field of power equipment technology, specifically to a safety pole-mounted circuit breaker. Background Technology

[0002] Pole-mounted circuit breakers are key equipment in power distribution network systems and are widely used for the segmentation, control, and protection of power lines.

[0003] Currently, installing pole-mounted circuit breakers typically requires first fixing a specific type of bracket to the utility pole, then using hoisting equipment to lift the circuit breaker to its designated position on the bracket, and finally, manual labor to climb to the height to tighten the bolts. This method is not only cumbersome and inefficient, but also poses significant risks associated with working at height, threatening the safety of the operators. Furthermore, existing pole-mounted circuit breakers often only fit specific bracket models, lacking compatibility with non-standard or misaligned brackets, thus limiting their application range and installation flexibility. Summary of the Invention

[0004] The purpose of this invention is to provide a safe pole-mounted circuit breaker to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a safety pole-mounted circuit breaker, comprising a circuit breaker body, wherein two symmetrically distributed support legs are fixedly connected to the bottom of the circuit breaker body, and the bottom of the two support legs are provided with an adjustment mechanism for adjusting the circuit breaker body to the center position of the support.

[0006] The adjustment mechanism includes a fixed plate fixedly connected to two support legs. A cylinder is fixedly connected to the bottom of the fixed plate. The cylinder is located at the center of the circuit breaker body and a lifting frame is fixedly connected to its telescopic end. Adjustment components are symmetrically arranged on the left and right sides of the lifting frame. The adjustment components include two rotating blocks that are rotatably connected to the front and rear support legs respectively. A spiral conveying rod is rotatably connected to the bottom end of each rotating block. The adjustment components also include a first rotating unit for driving the rotating blocks to rotate relative to the support legs and a second rotating unit for driving the spiral conveying rod to rotate relative to the rotating blocks.

[0007] A fixing mechanism for fixing the circuit breaker body to the bracket is provided between the two legs.

[0008] Preferably, the rotating unit includes a fixed rod that is fixedly connected to the rotating block, and a connecting rod that is rotatably connected to the other end of the fixed rod. The other end of the connecting rod is rotatably connected to the lifting frame.

[0009] Preferably, the rotating unit two includes a fixed rod two fixedly connected to the fixed rod one, a motor fixedly connected to the fixed rod two, and a worm fixedly connected to the output shaft of the motor; a worm wheel is fixedly connected to one end of the spiral conveying rod near the rotating block, the worm meshes with the worm wheel and the worms on the front and rear sides are fixedly connected to each other.

[0010] Preferably, a torque sensor is installed at the output end of the motor, and the torque sensor is used to control the start and stop of the motor.

[0011] Preferably, the fixing mechanism includes two symmetrical frames that are fixedly connected to the front and rear support legs. Clamping plates are symmetrically slidably connected to the left and right sides of each frame. Multiple upwardly inclined anti-slip plates are fixedly connected to one end of the inner side of each clamping plate. A driving assembly is provided inside the mechanism box of the circuit breaker body. This driving assembly is used to drive the two clamping plates inside the frames to a position where they fit against the support. A self-locking assembly is provided inside the frames. This self-locking assembly is used to lock the clamping plates relative to the frames when the clamping plates are in the state of clamping the support.

[0012] Preferably, the drive assembly includes a second cylinder fixed inside the circuit breaker body mechanism box, and a pull plate is fixedly connected to the telescopic end of the second cylinder; a first roller is provided at the middle position of the upper part of the frame, and the first rollers on both sides are rotatably connected to the pull plate; two rollers are symmetrically rotatably connected to the left and right positions inside the frame, and a pull rope is provided inside the frame, the pull rope being in contact with the first roller and the two second rollers; one end of the pull rope passes over the second left roller and is fixedly connected to the right clamping plate, and the other end of the pull rope passes over the second right roller and is fixedly connected to the left clamping plate.

[0013] Preferably, the self-locking assembly includes two lead screws that are rotatably disposed within the frame and do not have self-locking properties, the two lead screws being arranged one in front of the other within the frame; ratchet wheels are fixedly connected to the right end of the front lead screw and the left end of the rear lead screw, the ratchet wheels having pawls engaged with them, the pawls being fixed to the surface of the frame; the front lead screw is threadedly connected to the left clamping plate and has a clearance fit with the right clamping plate; the rear lead screw is threadedly connected to the right clamping plate and has a clearance fit with the left clamping plate.

[0014] Preferably, four fixed seats are fixedly connected to the mechanism box of the circuit breaker body. An incomplete external gear ring is slidably connected inside the fixed seat. A rack is engaged at the bottom of the incomplete external gear ring. The rack is slidably connected to the fixed seat. Push plates are symmetrically arranged on the left and right sides inside the mechanism box of the circuit breaker body. The push plates are located above the pull plates and are in contact with the pull plates. Telescopic rods are symmetrically fixedly connected to the front and rear sides of the push plates. The upper part of the telescopic rod is slidably connected to the mechanism box of the circuit breaker body, and a push frame is fixedly connected to the upper end of the telescopic rod. A connecting rod two is rotatably connected to the bottom end of the push frame. The other end of the connecting rod two is rotatably connected to the rack.

[0015] Preferably, the telescopic rod is elastic; and a stop block is fixedly connected to the open end of the incomplete external gear ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention utilizes an adjustment mechanism driven by a cylinder and equipped with symmetrical helical conveying rods to automatically detect and correct positional deviations between the circuit breaker and the support during hoisting, achieving precise alignment. Simultaneously, a torque sensor controls the motor's operation, ensuring a smooth and reliable adjustment process. This significantly reduces manual intervention and high-altitude work time, greatly improving installation safety and work efficiency.

[0018] This invention utilizes the cooperation between the adaptive clamping component and the self-locking screw structure in the fixing mechanism to automatically clamp the bracket after alignment, and uses anti-slip plates and ratchet pawls to achieve mechanical locking, ensuring a firm and stable installation. This design not only applies to brackets of different models and hole structures, improving the equipment's versatility, but also further optimizes the installation process by integrating an automatic rope retrieval function, achieving less manpower and automation in high-altitude operations. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the rear view structure of the present invention;

[0021] Figure 3 is a schematic diagram of the disassembled structure of the present invention;

[0022] Figure 4 is a schematic diagram of the adjustment mechanism in this invention;

[0023] Figure 5 is a schematic diagram of the disassembled structure of the adjustment mechanism in this invention;

[0024] Figure 6 is a schematic diagram of the operating principle of the adjustment mechanism in this invention;

[0025] Figure 7 is a schematic diagram of the fixing mechanism in this invention;

[0026] Figure 8 is a schematic diagram of the disassembled structure of the fixing mechanism in this invention;

[0027] Figure 9 is a schematic diagram of the self-locking mechanism in this invention;

[0028] Figure 10 is a schematic diagram of the structure of the incomplete external gear ring in this invention;

[0029] Figure 11 is a schematic diagram of the existing mainstream pole-mounted circuit breaker support.

[0030] In the attached diagram: 1. Circuit breaker body; 2. Support leg; 3. Fixing plate; 4. Cylinder 1; 6. Lifting frame; 7. Rotating block; 8. Screw conveyor rod; 9. Fixing rod 1; 10. Connecting rod 1; 11. Fixing rod 2; 12. Motor; 13. Worm gear; 14. Worm wheel; 15. Frame; 16. Clamping plate; 17. Anti-slip plate; 18. Cylinder 2; 19. Pull plate; 20. Roller 1; 21. Roller 2; 22. Pull rope; 23. Lead screw; 24. Ratchet; 25. Pad; 26. Fixing seat; 27. Incomplete external gear ring; 28. Rack; 29. ​​Push plate; 30. Telescopic rod; 31. Push frame; 32. Connecting rod 2; 33. Stop block. Detailed Implementation

[0031] Please refer to Figures 1-11. The present invention provides a technical solution: a safety pole-mounted circuit breaker, including a circuit breaker body 1, with two symmetrically distributed support legs 2 fixedly connected to the bottom of the circuit breaker body 1, and an adjustment mechanism for adjusting the circuit breaker body 1 to the center position of the support at the bottom of the two support legs 2.

[0032] The adjustment mechanism includes a fixed plate 3 fixedly connected to two support legs 2. A cylinder 4 is fixedly connected to the bottom of the fixed plate 3. The cylinder 4 is located at the center of the circuit breaker body 1 and a lifting frame 6 is fixedly connected to the telescopic end of the cylinder 4. Adjustment components are symmetrically arranged on the left and right sides of the lifting frame 6. The adjustment components include two rotating blocks 7 that are rotatably connected to the front and rear support legs 2 respectively. A screw conveyor rod 8 is rotatably connected to the bottom end of the rotating blocks 7. The adjustment components also include a first rotating unit for driving the rotating blocks 7 to rotate relative to the support legs 2 and a second rotating unit for driving the screw conveyor rod 8 to rotate relative to the rotating blocks 7.

[0033] A fixing mechanism for fixing the circuit breaker body 1 to the bracket is provided between the two support legs 2;

[0034] During operation, when installing the circuit breaker body 1, first install the corresponding bracket on the utility pole, and then start the hoisting equipment such as the crane to hoist the circuit breaker body 1 onto the bracket and control the support leg 2 to maintain a certain gap between the support and the bracket. At this time, since the circuit breaker body 1 is not in the center position of the bracket, it is necessary to adjust the circuit breaker body 1 to the center position of the bracket through the adjustment mechanism to improve the stability of the circuit breaker body 1 installed on the bracket.

[0035] By starting cylinder 4, the lifting frame 6 is moved downward. When the lifting frame 6 moves downward, the rotating unit 1 drives the rotating block 7 to rotate the screw conveyor 8 upward. When the circuit breaker body 1 is biased to one side, the screw conveyor 8 on that side will first come into contact with the bracket on that side. At this time, under the action of the rotating unit 2, the screw conveyor 8 rotates relative to the rotating block 7. Under the action of the rotation of the screw conveyor 8, the circuit breaker body 1 will be pushed to the other side, and then the circuit breaker body 1 can be gradually pushed to the center position of the bracket.

[0036] When both sides of the spiral conveyor rod 8 are in the position of being in contact with the bracket, the circuit breaker body 1 is exactly in the center position of the bracket. At this time, the hoisting equipment can be started to place the circuit breaker body 1 completely on the bracket, and then the fixing mechanism can be started to fix the circuit breaker body 1 on the bracket.

[0037] This device can automatically fix the circuit breaker body 1 after it has been adjusted to the center position of the bracket, eliminating the need for manual installation by climbing the utility pole. It can also effectively ensure the stability of the circuit breaker body 1 during installation, thus ensuring the safety of both the workers and the circuit breaker body 1.

[0038] Referring to Figures 4-6, as a further embodiment of the present invention, the rotating unit 1 includes a fixed rod 9 fixedly connected to the rotating block 7, and a connecting rod 10 rotatably connected to the other end of the fixed rod 9, and the other end of the connecting rod 10 rotatably connected to the lifting frame 6.

[0039] The rotating unit 2 includes a fixed rod 2 11 fixedly connected to the fixed rod 1 9, a motor 12 fixedly connected to the fixed rod 2 11, and a worm gear 13 fixedly connected to the output shaft of the motor 12; a worm wheel 14 is fixedly connected to one end of the spiral conveying rod 8 near the rotating block 7, the worm gear 13 meshes with the worm wheel 14 and the worm gears 13 on the front and rear sides are fixedly connected to each other.

[0040] A torque sensor is installed at the output terminal of motor 12, and the torque sensor is used to control the start and stop of motor 12;

[0041] During operation, when the lifting frame 6 is lowered by the cylinder 4, the lifting frame 6 pulls the fixed rod 9 downward through the connecting rod 10. When the fixed rod 9 rotates downward, it drives the rotating block 7 to rotate relative to the support leg 2. The rotating block 7 drives the spiral conveying rod 8 to rotate. After rotating a certain angle, the spiral conveying rod 8 fits into the bracket.

[0042] The motor 12 drives the worm gear 13 to rotate, and the worm gear 13 drives the screw conveyor 8 to rotate relative to the rotating block 7 through the worm wheel 14. When the screw conveyor 8 rotates to the position where it is in contact with the bracket, the screw conveyor 8 pushes the circuit breaker body 1 and itself to move closer to the center of the bracket through its conveying function. When the circuit breaker body 1 moves to the center of the bracket, the screw conveyor 8 on both sides rotates upward synchronously, so the screw conveyor 8 on both sides is in contact with the bracket at the same time. When the screw conveyor 8 on both sides is in contact with the bracket at the same time, the screw conveyor 8 on both sides can no longer push the circuit breaker body 1, and the screw conveyor 8 cannot rotate. The torque sensor will detect a large torque, and at this time the torque sensor will stop the motors 12 on both sides at the same time.

[0043] Since the spiral conveying rods 8 on both sides rotate upward from the bottom to fit against the bracket, and the support legs 2 are positioned above the bracket, keeping the spiral conveying rods 8 in contact with the bottom of the bracket can further fix the circuit breaker body 1.

[0044] Referring to Figures 7-9, as a further embodiment of the present invention, the fixing mechanism includes two symmetrical frames 15 respectively and fixedly connected to the front and rear support legs 2. Clamping plates 16 are symmetrically slidably connected to the left and right sides of the frames 15. Multiple upwardly inclined anti-slip plates 17 are fixedly connected to one end of the inner side of each clamping plate 16. A driving assembly is provided inside the mechanism box of the circuit breaker body 1. The driving assembly is used to drive the two clamping plates 16 inside the frames 15 to a position where they fit against the bracket. A self-locking assembly is provided inside the frames 15. The self-locking assembly is used to lock the clamping plates 16 relative to the frames 15 when the clamping plates 16 are in the state of clamping the bracket.

[0045] The drive assembly includes a second cylinder 18 fixed inside the mechanism box of the circuit breaker body 1, and a pull plate 19 fixedly connected to the telescopic end of the second cylinder 18; a first roller 20 is provided at the middle position of the upper part of the frame 15, and the first rollers 20 on both sides are rotatably connected to the pull plate 19; a second roller 21 is symmetrically rotatably connected to the left and right positions inside the frame 15, and a pull rope 22 is provided inside the frame 15, the pull rope 22 is in contact with the first roller 20 and the two second rollers 21; one end of the pull rope 22 passes over the left second roller 21 and is fixedly connected to the right clamping plate 16, and the other end of the pull rope 22 passes over the right second roller 21 and is fixedly connected to the left clamping plate 16;

[0046] The self-locking assembly includes two non-self-locking lead screws 23 rotatably disposed within the frame 15, arranged front to back within the frame 15; ratchet wheels 24 are fixedly connected to the right end of the front lead screw 23 and the left end of the rear lead screw 23, and pawls 25 are engaged on the ratchet wheels 24, which are fixed to the surface of the frame 15; the front lead screw 23 is threadedly connected to the left clamping plate 16 and has a clearance fit with the right clamping plate 16; the rear lead screw 23 is threadedly connected to the right clamping plate 16 and has a clearance fit with the left clamping plate 16.

[0047] During operation, when the circuit breaker body 1 is adjusted to the center position of the bracket, the starting cylinder 18 drives the pull plate 19 to move upward. When the pull plate 19 moves upward, it drives the rollers 20 on both sides to move upward. When the rollers 20 move upward, they drive the pull rope 22 that is in contact with them to move upward. When the rollers 20 pull the pull rope 22, the pull rope 22 will pull the left clamping plate 16 to the right and the right clamping plate 16 to the left. The clamping plates 16 on both sides move towards the position of the bracket at the same time.

[0048] When one of the clamping plates 16 first comes into contact with the bracket, as the roller 20 continues to move upward, the pull rope 22 begins to drive relative to the roller 20 and drives the roller 20 to rotate. When the pull rope 22 drives relative to the roller 20, it will drive the other clamping plate 16 to continue to move closer to the clamping plate 16 until it comes into contact with the clamping plate 16. By driving the two clamping plates 16 to move through the roller 20 and the pull rope 22, the two clamping plates 16 can be driven to hold the bracket at any position between the two clamping plates 16.

[0049] When the two clamping plates 16 clamp the bracket, the upwardly inclined anti-slip plate 17 between the clamping plates 16 and the bracket can further increase the friction between the clamping plates 16 and the bracket.

[0050] Since the lead screw 23 does not have self-locking properties, when the clamping plate 16 moves closer to the support, it drives the lead screw 23 and ratchet 24 to rotate. Under the action of the pawl 25, the ratchet 24 and the lead screw 23 can only rotate in one direction. The unidirectional rotation of the lead screw 23 can only ensure that the clamping plate 16 moves in one direction. Therefore, when the clamping plate 16 moves to clamp the support, the clamping plate 16 is in a locked state.

[0051] Referring to Figures 7 and 10, as a further embodiment of the present invention, four fixed seats 26 are fixedly connected to the mechanism box of the circuit breaker body 1. An incomplete external gear ring 27 is slidably connected inside the fixed seat 26. A rack 28 is meshed at the bottom of the incomplete external gear ring 27. The rack 28 is slidably connected to the fixed seat 26. Push plates 29 are symmetrically arranged on the left and right sides inside the mechanism box of the circuit breaker body 1. The push plates 29 are located above the pull plate 19 and are in contact with the pull plate 19. Telescopic rods 30 are symmetrically fixedly connected to the front and rear sides of the push plates 29. The upper part of the telescopic rods 30 is slidably connected to the mechanism box of the circuit breaker body 1, and a push frame 31 is fixedly connected to the upper end of the telescopic rods 30. A connecting rod 32 is rotatably connected to the bottom end of the push frame 31. The other end of the connecting rod 32 is rotatably connected to the rack 28.

[0052] The telescopic rod 30 is elastic; the open end of the incomplete external gear ring 27 is fixedly connected to a stop 33;

[0053] During operation, when hoisting the circuit breaker body 1, the circuit breaker body 1 can be hoisted onto the bracket by threading the hoisting rope through the incomplete external gear ring 27; when the circuit breaker body 1 is adjusted to the center position of the bracket, the hoisting equipment can be driven to place the circuit breaker body 1 onto the bracket, and then the cylinder 18 is started to drive the pull plate 19 to move upward, and the pull plate 19 drives the clamping plate 16 to clamp the bracket, thus fixing the circuit breaker body 1.

[0054] When the pull plate 19 moves upward, the pull plate 19 drives the push plate 29 to move upward, and the push plate 29 drives the two telescopic rods 30 connected to it to move upward. The telescopic rods 30 drive the push frame 31 to move upward. The push frame 31 pushes the rack 28 to slide relative to the fixed seat 26 through the connecting rod 2 32. When the rack 28 slides, it drives the incomplete outer gear ring 27 that meshes with it to rotate. When the opening part of the incomplete outer gear ring 27 rotates to the upper side, the hoisting equipment can be started to pull out the hoisting rope to achieve the effect of automatic hoisting rope recovery.

[0055] When the pull plate 19 needs to be moved to the uppermost position to drive the two clamping plates 16 to clamp the bracket, the distance that the push plate 29 moves can cause the incomplete external gear ring 27 to rotate multiple times. The limit of the incomplete external gear ring 27 stop block 33 can cause the incomplete external gear ring 27 to rotate only half a turn. After the incomplete external gear ring 27 rotates half a turn, the rack 28 and push frame 31 cannot continue to move. The pull plate 19 can rise normally by the adaptive contraction of the telescopic rod 30.

Claims

1. A safety-type pole-mounted circuit breaker, comprising a circuit breaker body (1), characterized in that: The circuit breaker body (1) has two symmetrically distributed support legs (2) fixedly connected to its bottom. The bottom of the two support legs (2) is provided with an adjustment mechanism for adjusting the circuit breaker body (1) to the center position of the support. The adjustment mechanism includes a fixed plate (3) fixedly connected to the two support legs (2). A cylinder (4) is fixedly connected to the bottom of the fixed plate (3). The cylinder (4) is located at the center position of the circuit breaker body (1) and a lifting frame (6) is fixedly connected to the telescopic end of the cylinder (4). The lifting frame (6) is symmetrically provided with adjustment components on the left and right sides. The adjustment components include two rotating blocks (7) respectively rotatably connected to the front and rear support legs (2). A spiral conveying rod (8) is rotatably connected to the bottom end of the rotating blocks (7). The adjustment components also include a rotating unit for driving the rotating blocks (7) to rotate relative to the support legs (2) and a rotating unit for driving the spiral conveying rod (8) to rotate relative to the rotating blocks (7). Unit 2; a fixing mechanism for fixing the circuit breaker body (1) on the bracket is provided between the two legs (2); the first rotating unit includes a fixing rod (9) fixedly connected to the rotating block (7), the other end of the fixing rod (9) is rotatably connected to a connecting rod (10), the other end of the connecting rod (10) is rotatably connected to the lifting frame (6); the second rotating unit includes a fixing rod (11) fixedly connected to the fixing rod (9), a motor (12) is fixedly connected to the fixing rod (11), and a worm (13) is fixedly connected to the output shaft of the motor (12); a worm wheel (14) is fixedly connected to one end of the spiral conveying rod (8) near the rotating block (7), the worm (13) meshes with the worm wheel (14) and the worms (13) on the front and rear sides are fixedly connected to each other; a torque sensor is installed at the output end of the motor (12), and the torque sensor is used to control the start and stop of the motor (12).

2. The safety pole-mounted circuit breaker according to claim 1, characterized in that: The fixing mechanism includes two symmetrically arranged frames (15), both of which are fixedly connected to two front and rear support legs (2); the frame (15) has symmetrically slidingly connected clamping plates (16) on the left and right sides, and one end of the clamping plate (16) is fixedly connected to a plurality of upwardly inclined anti-slip pieces (17); the mechanism box of the circuit breaker body (1) is provided with a driving component, which is used to drive the two clamping plates (16) in the frame (15) to move to a position that fits against the bracket; the frame (15) is provided with a self-locking component, which is used to lock the clamping plate (16) relative to the frame (15) when the clamping plate (16) is in the state of clamping the bracket.

3. The safety pole-mounted circuit breaker according to claim 2, characterized in that: The drive assembly includes a second cylinder (18) fixed inside the mechanism box of the circuit breaker body (1), and a pull plate (19) is fixedly connected to the telescopic end of the second cylinder (18); a first roller (20) is provided at the middle position of the upper part of the frame (15), and the first rollers (20) on both sides are rotatably connected to the pull plate (19); a second roller (21) is symmetrically rotatably connected to the left and right positions inside the frame (15), and a pull rope (22) is provided inside the frame (15), the pull rope (22) is in contact with the first roller (20) and the two second rollers (21); one end of the pull rope (22) passes over the left second roller (21) and is fixedly connected to the right clamping plate (16), and the other end of the pull rope (22) passes over the right second roller (21) and is fixedly connected to the left clamping plate (16).

4. A safety-type pole-mounted circuit breaker according to claim 2, characterized in that: The self-locking assembly includes two non-self-locking lead screws (23) rotatably disposed within the frame (15), the two lead screws (23) being arranged front to back within the frame (15); ratchet wheels (24) are fixedly connected to the right end of the front lead screw (23) and the left end of the rear lead screw (23), and pawls (25) are engaged on the ratchet wheels (24), the pawls (25) being fixed to the surface of the frame (15); the front lead screw (23) is threadedly connected to the left clamping plate (16) and has clearance fit with the right clamping plate (16); the rear lead screw (23) is threadedly connected to the right clamping plate (16) and has clearance fit with the left clamping plate (16).

5. A safety-type pole-mounted circuit breaker according to claim 3, characterized in that: Four fixed seats (26) are fixedly connected to the mechanism box of the circuit breaker body (1). An incomplete external gear ring (27) is slidably connected inside the fixed seat (26). A rack (28) is meshed at the bottom of the incomplete external gear ring (27). The rack (28) is slidably connected to the fixed seat (26). Push plates (29) are symmetrically arranged on the left and right sides inside the mechanism box of the circuit breaker body (1). The push plates (29) are located above the pull plates (19) and are in contact with the pull plates (19). Telescopic rods (30) are symmetrically fixedly connected to the front and rear sides of the push plates (29). The upper part of the telescopic rods (30) is slidably connected to the mechanism box of the circuit breaker body (1), and a push frame (31) is fixedly connected to the upper end of the telescopic rods (30). A connecting rod (32) is rotatably connected to the bottom end of the push frame (31). The other end of the connecting rod (32) is rotatably connected to the rack (28).

6. A safety-type pole-mounted circuit breaker according to claim 5, characterized in that: The telescopic rod (30) is elastic; the open end of the incomplete external gear ring (27) is fixedly connected to a stop (33).

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