Fatigue-resistant circuit breaker switch

Abstract

The utility model discloses an anti -fatigue circuit breaker switch, including circuit breaker, the left side fixed mounting of circuit breaker has the mounting seat, the right side fixed mounting of circuit breaker has the mounting frame, be equipped with multiple sets of adjusting plate in the mounting frame, multiple set adjusting plate all are through the mounting shaft with mounting frame swing joint, multiple set mounting shaft all have the third gear of sleeve joint, the third rack of sliding installation has in the mounting frame, install the expansion rod in the mounting frame, through the expansion rod of mounting frame heat expansion, push the slider and third rack transverse movement, drive multiple third gear rotation, make adjusting plate rotate and spread around mounting shaft, form the heat dissipation channel. The expansion rod of high temperature metal material accurate regulation opening angle with temperature change, realizes the airflow self -adaptation control, and simultaneously, the reset force is provided when the torsion spring is reduced in temperature, and the sealing property when adjusting plate is closed is ensured.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a fatigue-resistant circuit breaker switch. Background Technology

[0002] As a crucial protective device in power systems, circuit breakers are responsible for safely interrupting current under overload or short-circuit conditions, ensuring the stable operation of power equipment and the power grid. During long-term use, circuit breakers often face high current surges, arc thermal stress, and repeated opening and closing operations. This can lead to mechanical fatigue in internal mechanical components and insulation materials, reducing the reliability and lifespan of the equipment. Thermal management is particularly important. High temperatures not only accelerate the thermal fatigue aging of materials but also easily cause oxidation, deformation, and even melting, thereby weakening the circuit breaker's fatigue resistance. Therefore, heat dissipation efficiency is key to improving fatigue resistance. If heat dissipation cannot be achieved in time, thermal cycling stress will superimpose mechanical stress, causing cracks, deformation, and functional failure, ultimately affecting the overall durability of the circuit breaker.

[0003] Existing circuit breaker switches often employ fixed louvered or perforated heat dissipation structures, lacking an active temperature-responsive adjustment mechanism. This prevents them from automatically adjusting the gap size according to operating temperature changes, leading to insufficient or unstable heat dissipation. Furthermore, dust easily accumulates in these static gaps, forming an insulating layer that hinders airflow and further increases internal temperature. This poor heat dissipation not only exacerbates thermal fatigue but also causes residual stress in the materials during repeated thermal expansion and contraction, resulting in component deformation, accelerated wear, and fatigue crack formation. Ultimately, this significantly weakens the circuit breaker's fatigue resistance, shortens its service life, and increases maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a fatigue-resistant circuit breaker switch to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fatigue-resistant circuit breaker switch, comprising a circuit breaker, a mounting base fixedly installed on the left side of the circuit breaker, and a mounting frame fixedly installed on the right side of the circuit breaker. Multiple sets of adjusting plates are provided within the mounting frame, and each set of adjusting plates is rotatably connected to the mounting frame via mounting shafts. A third gear is sleeved on each set of mounting shafts. A third rack is slidably installed within the mounting frame, and the third rack meshes with multiple sets of third gears. A slider is fixedly installed on the third rack. An expansion rod is installed within the mounting frame, corresponding to the slider. A mounting ring is rotatably installed within the mounting base, and a dust cover is fixedly installed on the mounting ring. A toothed ring is sleeved on the mounting ring. A drive wheel is rotatably installed within the mounting base, meshing with the toothed ring. A rotating frame is rotatably installed on the mounting base, and two sets of scrapers are fixedly installed on the rotating frame, corresponding to the dust cover and fitting against the outer surface of the dust cover.

[0006] As a further preferred embodiment of this technical solution, a first sliding rod is fixedly installed inside the mounting frame, the third rack is slidably sleeved with the first sliding rod, and two sets of symmetrically distributed first springs are sleeved on the first sliding rod, with the two ends of the two sets of first springs respectively fixedly connected to the third rack and the mounting frame.

[0007] As a further preferred embodiment of this technical solution, each of the multiple sets of mounting shafts is fitted with a torsion spring, and the two ends of the torsion spring are fixedly connected to the mounting shaft and the mounting frame, respectively.

[0008] As a further preferred embodiment of this technical solution, a first gear is sleeved on the rotating frame, a first rack is slidably installed in the mounting base, the first rack is meshed with the first gear, a cylinder is fixedly installed in the mounting base, and the first rack is fixedly connected to the output end of the cylinder piston rod.

[0009] As a further preferred embodiment of this technical solution, a scraper is rotatably mounted inside the mounting base, the scraper being correspondingly arranged with a scraper brush, a second gear being sleeved on the scraper, a second rack being slidably mounted inside the mounting base, the second rack being meshed with the second gear, a second slide rod being fixedly mounted inside the mounting base, a connecting rod being rotatably mounted on the second rack, and a crank being rotatably mounted inside the mounting base, the crank being rotatably connected to the end of the connecting rod away from the second rack via a rotating shaft.

[0010] As a further preferred embodiment of this technical solution, the second rack is slidably sleeved with the second slide rod, and two sets of symmetrically distributed second springs are sleeved on the second slide rod. The two ends of the two sets of second springs are respectively fixedly connected to the second rack and the mounting base.

[0011] This utility model provides a fatigue-resistant circuit breaker switch, which has the following beneficial effects:

[0012] (1) This utility model achieves dynamic heat dissipation and self-cleaning functions through a temperature response mechanism. When the internal temperature of the circuit breaker rises, the expansion rod in the mounting frame expands due to heat, pushing the slider and the third rack to move laterally, driving multiple sets of third gears to rotate, causing the adjustment plate to rotate and unfold around the mounting shaft, forming a heat dissipation channel. The expansion rod made of high-temperature metal material precisely adjusts the opening and closing angle according to temperature changes, realizing adaptive airflow control; at the same time, the torsion spring provides a restoring force when cooling down, ensuring the sealing of the adjustment plate when it is closed.

[0013] (2) This utility model uses the rotating cleaning system of the dust cover and the heat dissipation action to work together. The cylinder drives the first rack to reciprocate, and the first gear drives the rotating frame to rotate, so that the scraper continuously removes the dust accumulated on the surface of the dust cover. At the same time, the crank mechanism pulls the second rack through the connecting rod, driving the scraper to swing and scrape off the residual dust attached to the scraper. The dual cleaning mechanism avoids dust blocking the heat dissipation path, effectively solves the problem of dust accumulation and heat insulation in static heat dissipation structure, significantly reduces thermal fatigue damage, and extends the service life of the circuit breaker. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the separation of the circuit breaker and mounting base of this utility model;

[0016] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A;

[0017] Figure 4 This is a schematic diagram showing the structural separation of the mounting base and dust cover of this utility model;

[0018] Figure 5 For the present utility model Figure 4 Enlarged view of the structure at point -B;

[0019] In the diagram: 1. Circuit breaker; 2. Mounting base; 3. Mounting frame; 4. Adjusting plate; 5. Mounting shaft; 6. Third gear; 7. Third rack; 8. First slide rod; 9. First spring; 10. Slider; 11. Expansion rod; 12. Torsion spring; 13. Mounting ring; 14. Dust cover; 15. Gear ring; 16. Drive wheel; 17. Rotating frame; 18. Scraper; 19. First gear; 20. First rack; 21. Cylinder; 22. Scraper rod; 23. Second gear; 24. Second rack; 25. Second slide rod; 26. Second spring; 27. Connecting rod; 28. Crank. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: such as Figure 1 , Figure 2 and Figure 3 As shown in this embodiment, a fatigue-resistant circuit breaker switch includes a circuit breaker 1. A mounting base 2 is fixedly installed on the left side of the circuit breaker 1, and a mounting frame 3 is fixedly installed on the right side of the circuit breaker 1. Multiple sets of adjusting plates 4 are provided inside the mounting frame 3. All sets of adjusting plates 4 are rotatably connected to the mounting frame 3 via mounting shafts 5. Third gears 6 are sleeved on all sets of mounting shafts 5. A third rack 7 is slidably installed inside the mounting frame 3, and the third rack 7 meshes with multiple sets of third gears 6. A fixed... A slider 10 is installed, and an expansion rod 11 is installed inside the mounting frame 3, with the expansion rod 11 corresponding to the slider 10. A mounting ring 13 is rotatably installed inside the mounting base 2, and a dust cover 14 is fixedly installed on the mounting ring 13. A toothed ring 15 is sleeved on the mounting ring 13. A drive wheel 16 is rotatably installed inside the mounting base 2, and the drive wheel 16 is meshed with the toothed ring 15. A rotating frame 17 is rotatably installed on the mounting base 2, and two sets of scrapers 18 are fixedly installed on the rotating frame 17, with the scrapers 18 corresponding to the dust cover 14. The scraper 18 is fitted to the outer surface of the dust cover 14. A first slide rod 8 is fixedly installed inside the mounting frame 3. A third rack 7 is slidably sleeved with the first slide rod 8. Two sets of symmetrically distributed first springs 9 are sleeved on the first slide rod 8. The two ends of the two sets of first springs 9 are fixedly connected to the third rack 7 and the mounting frame 3, respectively. Torsion springs 12 are sleeved on multiple sets of mounting shafts 5. The two ends of the torsion springs 12 are fixedly connected to the mounting shafts 5 and the mounting frame 3, respectively. When the temperature of the equipment in the circuit breaker 1 rises during operation, the metal expansion rod 11 inside the mounting frame 3 expands due to heat, pushing the slider 10 and the third rack 7 to move. The third rack 7 drives multiple sets of third gears 6 to rotate, causing the adjustment plate 4 to deflect and unfold, automatically increasing the heat dissipation channel area. The higher the temperature, the greater the elongation of the expansion rod 11, and the opening of the heat dissipation vent also increases, realizing dynamic heat dissipation adjustment. When the temperature drops, the torsion springs 12 and the first springs 9 drive the adjustment plate 4 to reset, maintaining the equipment's airtightness and effectively preventing dust from entering.

[0022] like Figure 4 and Figure 5As shown, a first gear 19 is sleeved on the rotating frame 17. A first rack 20 is slidably installed in the mounting base 2, and the first rack 20 meshes with the first gear 19. A cylinder 21 is fixedly installed in the mounting base 2, and the first rack 20 is fixedly connected to the output end of the piston rod of the cylinder 21. A scraper 22 is rotatably installed in the mounting base 2, and the scraper 22 is correspondingly arranged with the scraper brush 18. A second gear 23 is sleeved on the scraper 22. A second rack 24 is slidably installed in the mounting base 2, and the second rack 24 meshes with the second gear 23. A second slide rod 25 is fixedly installed in the mounting base 2. A connecting rod 27 is rotatably installed on the second rack 24. A crank 28 is rotatably installed in the mounting base 2, and the crank 28 is rotatably connected to the end of the connecting rod 27 away from the second rack 24 via a rotating shaft. The second rack 24 and the second slide rod 25 are rotatably connected. 5. A sliding sleeve is used. Two sets of symmetrically distributed second springs 26 are sleeved on the second slide rod 25. The two ends of the two sets of second springs 26 are fixedly connected to the second rack 24 and the mounting base 2, respectively. The dust cover 14 on the mounting base 2 rotates continuously through the gear ring 15 and the drive wheel 16 in conjunction with the mounting ring 13. The scraper 18 in contact with it cleans its surface in all directions during the rotation of the dust cover 14. After a set of scrapers 18 has been used for a period of time, the cylinder 21 drives the first rack 20 to move linearly, causing the rotating frame 17 to rotate the scraper 18 180 degrees, completing the position conversion between the two sets of scrapers 18. The scraper 18 in the lower idle state is in contact with the scraper rod 22. The scraper rod 22 swings periodically under the action of the crank 28 mechanism, which removes the dust accumulated on the scraper 18 in time, forming a closed-loop cleaning cycle. This dual cleaning mechanism ensures that the heat dissipation channel is always unobstructed and avoids the problem of reduced heat dissipation efficiency caused by dust accumulation.

[0023] This utility model provides a fatigue-resistant circuit breaker switch, the specific working principle of which is as follows: When the temperature of the equipment in the circuit breaker 1 increases during operation, the metal expansion rod 11 inside the mounting frame 3 expands due to heat, pushing the slider 10 and the third rack 7 to move. The third rack 7 drives multiple sets of third gears 6 to rotate, causing the adjusting plate 4 to deflect and unfold, automatically increasing the heat dissipation channel area. The higher the temperature, the greater the elongation of the expansion rod 11, and the greater the opening of the heat dissipation vent, achieving dynamic heat dissipation adjustment. When the temperature decreases, the torsion spring 12 and the first spring 9 drive the adjusting plate 4 to reset, maintaining the equipment's airtightness and effectively preventing dust from entering. The dust cover 14 on the mounting base 2 is connected to the drive wheel 1 by the gear ring 15. 6. With the continuous rotation of the mounting ring 13, the scraper 18 that is in contact with it cleans the surface of the dust cover 14 in all directions as the dust cover rotates. After a period of use, the cylinder 21 drives the first rack 20 to move linearly, causing the rotating frame 17 to rotate the scraper 18 by 180 degrees, completing the position switch between the two sets of scrapers 18. The scraper 18 in the lower idle state is in contact with the scraper 22. The scraper 22 swings periodically under the action of the crank 28 mechanism, which removes the dust accumulated on the scraper 18 in time, forming a closed-loop cleaning cycle. This dual cleaning mechanism ensures that the heat dissipation channel is always unobstructed and avoids the problem of reduced heat dissipation efficiency caused by dust accumulation.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fatigue-resistant circuit breaker switch, comprising a circuit breaker (1), characterized in that: A mounting base (2) is fixedly installed on the left side of the circuit breaker (1), and a mounting frame (3) is fixedly installed on the right side of the circuit breaker (1). Multiple sets of adjusting plates (4) are provided inside the mounting frame (3). All sets of adjusting plates (4) are rotatably connected to the mounting frame (3) via mounting shafts (5). Third gears (6) are sleeved on all sets of mounting shafts (5). A third rack (7) is slidably installed inside the mounting frame (3). The third rack (7) meshes with multiple sets of third gears (6). A slider (10) is fixedly installed on the third rack (7). An expansion rod (11) is installed inside the mounting frame (3). (11) Corresponding to the slider (10), the mounting base (2) is rotatably mounted with a mounting ring (13), and a dust cover (14) is fixedly mounted on the mounting ring (13). A toothed ring (15) is sleeved on the mounting ring (13). A drive wheel (16) is rotatably mounted in the mounting base (2). The drive wheel (16) meshes with the toothed ring (15). A rotating frame (17) is rotatably mounted on the mounting base (2). Two sets of scrapers (18) are fixedly mounted on the rotating frame (17). The scrapers (18) are corresponding to the dust cover (14), and the scrapers (18) are attached to the outer surface of the dust cover (14).

2. The fatigue-resistant circuit breaker switch according to claim 1, characterized in that: The first slide rod (8) is fixedly installed inside the mounting frame (3). The third rack (7) is slidably sleeved with the first slide rod (8). Two sets of symmetrically distributed first springs (9) are sleeved on the first slide rod (8). The two ends of the two sets of first springs (9) are fixedly connected to the third rack (7) and the mounting frame (3) respectively.

3. The fatigue-resistant circuit breaker switch according to claim 1, characterized in that: Each of the multiple sets of mounting shafts (5) is fitted with a torsion spring (12), and the two ends of the torsion spring (12) are fixedly connected to the mounting shaft (5) and the mounting frame (3) respectively.

4. The fatigue-resistant circuit breaker switch according to claim 1, characterized in that: A first gear (19) is sleeved on the rotating frame (17), and a first rack (20) is slidably installed in the mounting base (2). The first rack (20) meshes with the first gear (19). A cylinder (21) is fixedly installed in the mounting base (2), and the first rack (20) is fixedly connected to the output end of the piston rod of the cylinder (21).

5. A fatigue-resistant circuit breaker switch according to claim 1, characterized in that: A scraper rod (22) is rotatably mounted inside the mounting base (2). The scraper rod (22) is correspondingly arranged with the scraper brush (18). A second gear (23) is sleeved on the scraper rod (22). A second rack (24) is slidably mounted inside the mounting base (2). The second rack (24) is meshed with the second gear (23). A second slide rod (25) is fixedly mounted inside the mounting base (2). A connecting rod (27) is rotatably mounted on the second rack (24). A crank (28) is rotatably mounted inside the mounting base (2). The crank (28) is rotatably connected to the end of the connecting rod (27) away from the second rack (24) through a rotating shaft.

6. A fatigue-resistant circuit breaker switch according to claim 5, characterized in that: The second rack (24) is slidably sleeved with the second slide rod (25). Two sets of symmetrically distributed second springs (26) are sleeved on the second slide rod (25). The two ends of the two sets of second springs (26) are fixedly connected to the second rack (24) and the mounting base (2), respectively.

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