Pole-mounted circuit breaker with opening buffer mechanism

Abstract

The utility model relates to the technical field of pole-mounted circuit breakers, and discloses a pole-mounted circuit breaker with an opening buffer mechanism, which comprises a mechanism box and a control interface, the top end of the mechanism box is fixedly connected with an arc extinguish chamber, the rear end of the arc extinguish chamber is provided with a current transformer, the top end of the arc extinguish chamber is clamped with a fixed end cover plate, and the fixed end cover plate is provided with an opening buffer mechanism. A first conducting rod is fixed in the fixed end cover plate in a longitudinal penetrating mode, a movable end cover plate is arranged at the bottom end in the arc extinguish chamber, a corrugated pipe is arranged at the top of the movable end cover plate, and a second conducting rod is arranged in the movable end cover plate and the top end of the mechanism box in a longitudinal penetrating mode. According to the pole-mounted circuit breaker with the opening buffer mechanism, the fixed end cover plate and other parts are arranged, when the second conducting rod moves upwards or downwards, a buffer spring can be driven to stretch out and draw back, the damper is arranged in the pole-mounted circuit breaker, so that the second conducting rod has a certain buffer effect when moving, certain safety is improved, and the service life of the pole-mounted circuit breaker is prolonged. The problem that buffering is not convenient during opening and closing is solved.

Description

Technical Field

[0001] This utility model relates to the field of pole-mounted circuit breaker technology, specifically a pole-mounted circuit breaker with a tripping buffer mechanism. Background Technology

[0002] A pole-mounted circuit breaker is a high-voltage electrical device installed on a utility pole. It is used to control and protect power distribution networks. It refers to a circuit breaker that is installed and operated on a utility pole. It is mainly used in outdoor power distribution systems. It can close, carry, and interrupt current under normal circuit conditions, and close, carry, and interrupt current under abnormal circuit conditions (such as short circuits or overloads) within a specified time, thereby protecting circuits and equipment from damage.

[0003] The existing design of pole-mounted circuit breakers is not conducive to buffering during opening and closing, resulting in poor safety during use. Therefore, it is necessary to improve its structure.

[0004] Now, a novel pole-mounted circuit breaker with a tripping buffer mechanism is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a pole-mounted circuit breaker with a tripping buffer mechanism to solve the problem mentioned in the background art that it is not convenient to buffer during tripping.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pole-mounted circuit breaker with a tripping buffer mechanism, comprising a mechanism box and a control interface. An arc-extinguishing chamber is fixedly connected to the top of the mechanism box. A current transformer is installed at the rear end of the arc-extinguishing chamber. A fixed-end cover plate is snapped onto the top of the arc-extinguishing chamber. A first conductive rod is longitudinally fixed through the interior of the fixed-end cover plate. A moving-end cover plate is installed at the bottom of the interior of the arc-extinguishing chamber. A bellows is installed at the top of the moving-end cover plate. A second conductive rod is longitudinally installed through the interior of the moving-end cover plate and the top of the mechanism box. Contacts are fixedly connected to the top of the second conductive rod and the bottom of the first conductive rod, respectively. A fixing block is fixedly connected to the exterior of the second conductive rod. Buffer springs are fixedly connected to both sides of the top of the fixing block. A damper is installed inside the buffer spring. Connecting blocks are fixedly connected to both sides of the inner wall of the arc-extinguishing chamber.

[0007] As a further technical solution of this utility model, the top end of the buffer spring is fixedly connected to the bottom end of the connecting block, and the first conductive rod and the second conductive rod are on the same vertical plane.

[0008] As a further technical solution of this utility model, a control interface is provided on the right side of the front end of the mechanism box, an opening and closing indicator is provided on the front end of the mechanism box, a manual energy storage pull ring is provided on the left side of the opening and closing indicator, a manual operation handle is provided on the left side of the manual energy storage pull ring, and a lifting ring is fixedly connected to the top of the mechanism box.

[0009] As a further technical solution of this utility model, a through groove is provided at the bottom end of the mechanism box, a bottom frame is provided at the bottom end of the mechanism box, connecting seats are fixedly connected to both sides of the bottom frame, and assembly holes are provided inside the connecting seats.

[0010] As a further technical solution of this utility model, a fixed frame is fixedly connected to the right side of the mechanism box, a placement box is provided inside the fixed frame, desiccant granules are placed inside the placement box, a handle is fixedly connected to the front end of the placement box, and a reserved slot is provided on the right side of the mechanism box and the left side of the placement box, and the placement box is connected to the inside of the mechanism box through the reserved slot.

[0011] As a further technical solution of this utility model, positioning bolts are movably connected to the top of both sides of the bottom frame, and the bottom frame is detachable from the bottom of the mechanism box through the positioning bolts.

[0012] As a further technical solution of this utility model, a drive motor is fixedly installed at the bottom of the bottom frame, and a fan is fixedly connected to the output end of the drive motor. The fan is provided in three sets.

[0013] As a further technical solution of this utility model, the front end of the bottom frame is provided with heat dissipation grooves, and three sets of heat dissipation grooves are provided.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the pole-mounted circuit breaker with the tripping buffer mechanism not only realizes the tripping buffer function and facilitates the rapid dissipation of heat inside the mechanism box, but also facilitates the absorption of moisture inside and keeps it dry.

[0015] The system includes a fixed end cover plate, a first conductive rod, a connecting block, a buffer spring, a damper, a second conductive rod, a contact, a bellows, a moving end cover plate, and a fixed block. When the second conductive rod moves upward or downward, it can drive the buffer spring to extend and retract. Because a damper is installed inside, the second conductive rod has a certain buffering effect when it moves, which improves safety.

[0016] The mechanism is equipped with a base frame, through slot, drive motor, fan, positioning bolts, heat dissipation slot, connecting seat, and assembly holes. When the drive motor is turned on, the fan rotates. The heat dissipation slot and through slot facilitate the dissipation of heat from inside the mechanism box to the outside, ensuring the stable operation of the internal components.

[0017] The device is equipped with a mechanism box, a fixed frame, a placement box, a handle, desiccant granules, and a reserved slot. The desiccant granules inside the placement box can absorb moisture inside the mechanism box through the reserved slot, keeping the inside of the mechanism box dry. When it needs to be replaced later, the desiccant granules inside the placement box can be removed and replaced using the handle. Attached Figure Description

[0018] Figure 1 This is a front view cross-sectional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal rear view structure of the arc extinguishing box of this utility model;

[0020] Figure 3 This is a front view structural diagram showing the connection between the placement box and the mechanism box of this utility model;

[0021] Figure 4 This is a front view structural diagram of the connection between the bottom frame and the fan of this utility model.

[0022] In the diagram: 1. Mechanism box; 2. Fixing frame; 3. Placement box; 4. Handle; 5. Desiccant granules; 6. Reserved slot; 7. Control interface; 8. Base frame; 9. Through slot; 10. Drive motor; 11. Fan; 12. Positioning bolt; 13. Heat dissipation slot; 14. Connecting seat; 15. Assembly hole; 16. Opening / closing indicator; 17. Manual energy storage pull ring; 18. Manual operating handle; 19. Lifting ring; 20. Current transformer; 21. Arc extinguishing chamber; 22. Fixed end cover plate; 23. First conductive rod; 24. Connecting block; 25. Buffer spring; 26. Damper; 27. Second conductive rod; 28. Contact; 29. ​​Bellows; 30. Moving end cover plate; 31. Fixing block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4This utility model provides an embodiment of a pole-mounted circuit breaker with a tripping buffer mechanism, including a mechanism box 1 and a control interface 7. An arc-extinguishing chamber 21 is fixedly connected to the top of the mechanism box 1. A current transformer 20 is provided at the rear end of the arc-extinguishing chamber 21. A fixed end cover plate 22 is snapped onto the top of the arc-extinguishing chamber 21. A first conductive rod 23 is fixedly fixedly through the interior of the fixed end cover plate 22. A moving end cover plate 30 is provided at the bottom of the interior of the arc-extinguishing chamber 21. A bellows 29 is provided at the top of the moving end cover plate 30. A second conductive rod 27 is fixedly through the interior of the moving end cover plate 30 and the top of the mechanism box 1. A contact 28 is fixedly connected to the top of the second conductive rod 27 and the bottom of the first conductive rod 23, respectively. A fixing block 31 is fixedly connected to the outside of the second conductive rod 27. Buffer springs 25 are fixedly connected to both sides of the top of the fixing block 31. A damper 26 is provided inside the buffer spring 25. Connecting blocks 24 are fixedly connected to both sides of the inner wall of the arc-extinguishing chamber 21.

[0025] The top end of the buffer spring 25 is fixedly connected to the bottom end of the connecting block 24, and the first conductive rod 23 and the second conductive rod 27 are on the same vertical plane;

[0026] A control interface 7 is provided on the right side of the front end of the mechanism box 1. An opening and closing indicator 16 is provided on the front end of the mechanism box 1. A manual energy storage pull ring 17 is provided on the left side of the opening and closing indicator 16. A manual operating handle 18 is provided on the left side of the manual energy storage pull ring 17. A lifting ring 19 is fixedly connected to the top of the mechanism box 1.

[0027] Specifically, such as Figure 1 and Figure 2 As shown, when the second conductive rod 27 moves upward or downward, it can drive the buffer spring 25 to extend and retract. Because a damper 26 is installed inside, the second conductive rod 27 has a certain buffering effect when it moves, which improves the safety to a certain extent.

[0028] The bottom end of the mechanism box 1 is provided with a through groove 9, and the bottom end of the mechanism box 1 is provided with a bottom frame 8. The two sides of the bottom frame 8 are fixedly connected with connecting seats 14, and the interior of the connecting seats 14 is provided with assembly holes 15.

[0029] The top of both sides of the bottom frame 8 are movably connected with positioning bolts 12, and the bottom frame 8 can be detached from the bottom of the mechanism box 1 through the positioning bolts 12.

[0030] A drive motor 10 is fixedly installed at the bottom of the interior of the bottom frame 8. A fan 11 is fixedly connected to the output end of the drive motor 10. The fan 11 is provided with three sets.

[0031] The front end of the bottom frame 8 is provided with heat dissipation slots 13, and there are three sets of heat dissipation slots 13;

[0032] Specifically, such as Figure 1 and Figure 4As shown, when the drive motor 10 is turned on, the fan 11 is driven to rotate. The heat dissipation slot 13 and the through slot 9 are used to dissipate the heat inside the mechanism box 1 to the outside, ensuring the stable operation of the internal components of the mechanism box 1.

[0033] A fixed frame 2 is fixedly connected to the right side of the mechanism box 1. A placement box 3 is set inside the fixed frame 2. Desiccant granules 5 are placed inside the placement box 3. A handle 4 is fixedly connected to the front end of the placement box 3. A reserved slot 6 is set on the right side of the mechanism box 1 and the left side of the placement box 3. The placement box 3 is connected to the interior of the mechanism box 1 through the reserved slot 6.

[0034] Specifically, such as Figure 1 and Figure 3 As shown, the desiccant particles 5 inside the placement box 3 can absorb the moisture inside the mechanism box 1 through the reserved slot 6, keeping the inside of the mechanism box 1 dry. When it needs to be replaced later, the desiccant particles 5 inside the placement box 3 can be taken out and replaced using the handle 4.

[0035] Working principle: When this utility model is in use, firstly, when the second conductive rod 27 moves up or down, it can drive the buffer spring 25 to extend and retract. Because a damper 26 is provided inside, the second conductive rod 27 has a certain buffering effect when it moves, which improves the safety. Then, the drive motor 10 is turned on to drive the fan 11 to rotate. The heat dissipation slot 13 and the through slot 9 are used to facilitate the dissipation of heat inside the mechanism box 1 to the outside, ensuring the stable operation of the internal components of the mechanism box 1. Finally, the desiccant particles 5 inside the placement box 3 can absorb the moisture inside the mechanism box 1 through the reserved slot 6, keeping the inside of the mechanism box 1 dry. When it needs to be replaced later, the desiccant particles 5 inside the placement box 3 can be taken out and replaced using the handle 4.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pole-mounted circuit breaker with opening buffer mechanism, comprising a mechanism box (1) and a control interface (7), characterized in that: The top end of the mechanism box (1) is fixedly connected with an arc extinguishing chamber (21), the rear end of the arc extinguishing chamber (21) is provided with a current transformer (20), the top end of the arc extinguishing chamber (21) is clamped with a fixed end cover plate (22), the inside of the fixed end cover plate (22) is fixedly provided with a first conductive rod (23) longitudinally, the bottom end of the inside of the arc extinguishing chamber (21) is provided with a movable end cover plate (30), the top of the movable end cover plate (30) is provided with a bellows (29), the inside of the movable end cover plate (30) and the top end of the mechanism box (1) is provided with a second conductive rod (27) longitudinally, the top end of the second conductive rod (27) and the bottom end of the first conductive rod (23) are fixedly connected with a contact (28) respectively, the outside of the second conductive rod (27) is fixedly connected with a fixed block (31), the top end of the fixed block (31) is fixedly connected with a buffer spring (25) on both sides, the inside of the buffer spring (25) is provided with a damper (26), the inside of the arc extinguishing chamber (21) is fixedly connected with a connecting block (24) on both sides.

2. The pole-mounted circuit breaker having a tripping buffer mechanism according to claim 1, characterized in that: The top end of the buffer spring (25) is fixedly connected with the bottom end of the connecting block (24), the first conductive rod (23) and the second conductive rod (27) are in the same vertical plane.

3. The pole-mounted circuit breaker having a tripping buffer mechanism according to claim 1, characterized in that: The front end of the mechanism box (1) is provided with a control interface (7), the front end of the mechanism box (1) is provided with a closing and opening indication (16), the left side of the closing and opening indication (16) is provided with a manual energy storage pull ring (17), the left side of the manual energy storage pull ring (17) is provided with a manual operation handle (18), the top end of the mechanism box (1) is fixedly connected with a lifting ring (19).

4. The pole-mounted circuit breaker having a tripping buffer mechanism according to claim 1, characterized in that: The bottom end of the mechanism box (1) is provided with a through slot (9), the bottom end of the mechanism box (1) is provided with a bottom frame (8), the both sides of the bottom frame (8) are fixedly connected with a connecting seat (14), the inside of the connecting seat (14) is provided with an assembly hole (15).

5. The pole-mounted circuit breaker having a tripping buffer mechanism according to claim 1, characterized in that: The right side of the mechanism box (1) is fixedly connected with a fixed frame (2), the inside of the fixed frame (2) is provided with a placing box (3), the inside of the placing box (3) is placed with desiccant particles (5), the front end of the placing box (3) is fixedly connected with a handle (4), the right side of the mechanism box (1) and the left side of the placing box (3) are provided with a reserved slot (6), the inside of the placing box (3) is communicated with the inside of the mechanism box (1) through the reserved slot (6).

6. The pole-mounted circuit breaker having a tripping buffer mechanism according to claim 4, characterized in that: The top end of the both sides of the bottom frame (8) is movably connected with a positioning bolt (12), the bottom frame (8) is detachable with the bottom end of the mechanism box (1) through the positioning bolt (12).

7. The pole-mounted circuit breaker having a tripping buffer mechanism according to claim 4, characterized in that: The bottom end of the inside of the bottom frame (8) is fixedly installed with a driving motor (10), the output end of the driving motor (10) is fixedly connected with a fan (11), the fan (11) is provided with three groups.

8. The pole-mounted circuit breaker having a tripping buffer mechanism according to claim 4, characterized in that: The front end of the bottom frame (8) is provided with a heat dissipation groove (13), the heat dissipation groove (13) is provided with three groups.

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