A stable pole-mounted circuit breaker

Abstract

This utility model discloses a stable pole-mounted circuit breaker, which includes a mounting plate and a pole-mounted circuit breaker body. The pole-mounted circuit breaker body has mounting portions on both sides. The mounting plate has a first recessed cavity with an opening to accommodate the mounting portions, and a second recessed cavity corresponding to the first recessed cavity is provided on the back of the mounting plate. Pressure plates are inserted into the first and second recessed cavities, with one pressure plate abutting against the mounting portion. The pressure plates are configured as an integrated structure. The pressure plates abut against the sidewalls of the recesses to reduce the lateral swaying of the pole-mounted circuit breaker body. A grooved locking fastening assembly and a second protective assembly using spring force improve connection reliability and pre-tightening force. Simultaneously, the first and second protective assemblies block humid air, water vapor, and rainwater, preventing corrosion and rust of the fastening components, ensuring their strength and fastening performance, reducing the risk of loosening, and improving the product's protective performance.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a pole-mounted circuit breaker with stable connection. Background Technology

[0002] Pole-mounted circuit breakers, as a crucial component of the power system, are installed on utility poles and bear the heavy responsibility of automatically cutting off power supply in emergencies and protecting equipment and personnel from electric shock. For county-level power supply companies, ensuring the proper management and maintenance of pole-mounted circuit breakers and incorporating them into a standardized and systematic management system is the cornerstone of maintaining the company's safety management and power supply reliability.

[0003] Existing pole-mounted circuit breakers are fixed to mounting plates on utility poles using multiple bolts and nuts. Due to their high location, they are constantly exposed to wind and rain. Wind causes the circuit breaker to sway on the mounting plate, loosening the bolts and nuts, potentially leading to insecure installation or even a fall from a height. Simultaneously, rainwater and its potentially corrosive chemicals (such as acid rain) react with the bolts and nuts, causing corrosion and rust, weakening their strength, reducing their fastening performance, and potentially exacerbating loosening due to rough or pitted surfaces. Therefore, the applicant has developed a beneficial design and found a solution to the above problems. The technical solution described below arose from this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology design and to provide a product with protective effect and improved connection reliability.

[0005] A stable pole-mounted circuit breaker includes a mounting plate and a pole-mounted circuit breaker body. The pole-mounted circuit breaker body has mounting portions on both sides. The mounting plate has a first recess with an opening to accommodate the mounting portions. The back of the mounting plate has a second recess corresponding to the first recess. Pressure plates are inserted into the first and second recesses, with one pressure plate abutting against the mounting portion. The pressure plates are of an integrated structure. At least one first connecting portion and one second connecting portion are respectively provided on both ends of the pressure plates. A fastening assembly is provided between the first and second connecting portions and passes through the mounting portions. A first protective assembly is provided on the outer wall of the first connecting portion and is pressed against the outer wall of the first connecting portion. The first protective assembly has a groove for preventing the fastening assembly from rotating. A second protective assembly is threadedly connected to the outer wall of the second connecting portion. The second protective assembly has a component for increasing the pre-tightening force of the fastening assembly.

[0006] Preferably, the fastening assembly includes a bolt and a clamping nut. A spring washer and a flat washer are sequentially fitted onto the shank of the bolt. The flat washer abuts against the end face of the first connecting part. The clamping nut is threaded onto the bolt and abuts against the end face of the second connecting part.

[0007] Preferably, the outer wall of the first connecting part is provided with a fixing groove, which is located at the bottom of the first connecting part.

[0008] Preferably, the first protective component includes a first protective member and at least one O-ring on its inner wall. The groove is disposed in the first protective member and the shape of the groove is set to correspond to the shape of the bolt head. One end of the first protective member is provided with a plurality of equally spaced extensions evenly distributed along the circumferential direction. There is a gap between adjacent extensions for them to move. The inner wall of the extension is provided with a backstop and a fixing groove is embedded therein. The part of the extension that meets the protective member is provided with a crease groove. Both sides of the extension are provided with clearance grooves for disassembly tools to enter. The other end of the first protective member is provided with a clamping cap.

[0009] Preferably, the outer wall of the second connecting part is provided with an external threaded groove.

[0010] Preferably, the second protective component includes a second protective member and a sealing washer abutting against its end face. The second protective member is threadedly connected to an external thread groove. The second protective member has a first countersunk hole at its entrance. The sealing washer has a protrusion that is embedded in the first countersunk hole. The second protective member has an operating part for tool operation. The interior of the second protective member has a second countersunk hole for avoiding bolts. A spring is fixed in the second countersunk hole and acts on the clamping nut.

[0011] Preferably, one side of the pressure plate is provided with a pressing part, which abuts against both sides of the mounting plate, and both sides of the pressing part are provided with fastening screws, which are threadedly connected to the mounting plate.

[0012] Preferably, the component that increases the preload of the fastening assembly is a spring. Beneficial effects

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] (1) In this utility model, the pressure plate and multiple fastening components work together to firmly clamp the mounting part in the first cavity. The pressure plate abuts against the side walls of the first and second cavities, reducing the amplitude of the left and right sway of the pole-mounted circuit breaker body and effectively avoiding the risk of chain loosening caused by the loosening of a single fastening component. The groove is used to limit the fastening component and prevent it from rotating under the vibration of the circuit breaker. The first protective component achieves a stable connection without violent disassembly by fastening the anti-retraction part to the outer wall of the first connecting part, which significantly improves the reliability of the connection between the fastening component and the pressure plate. At the same time, the second protective component uses a spring to apply a continuous force to the fastening component, which enhances the friction between the fastening component and the second connecting part, thereby effectively improving the pre-tightening force and ensuring the stability of the connection.

[0015] (2) By setting the first protective component and the second protective component, the present invention effectively blocks the direct contact between the external humid air, water vapor and rainwater and the fastening component; at the same time, by using the O-ring and sealing gasket, the fastening component is further prevented from chemically reacting with the external environment, thereby avoiding the occurrence of corrosion and rust, ensuring that the strength and fastening performance of the fastening component are not weakened, and reducing the possibility of loosening due to surface roughness or pits, so that the product has good protective performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a stable pole-mounted circuit breaker according to the present invention;

[0017] Figure 2 This is a side cross-sectional view of a stable pole-mounted circuit breaker according to the present invention.

[0018] Figure 3 This utility model Figure 2 A partial enlarged view A of a stable pole-mounted circuit breaker;

[0019] Figure 4 This is an exploded view of the structure of a stable pole-mounted circuit breaker according to the present invention.

[0020] Figure 5 This is a schematic diagram of the structure of the first protective component of a stable pole-mounted circuit breaker according to the present invention;

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] Reference numerals: 1. Mounting plate; 2. Pole-mounted circuit breaker body; 3. Pressure plate; 4. Fastening assembly; 5. First protective assembly; 6. Second protective assembly;

[0023] 11. First concave cavity; 12. Second concave cavity;

[0024] 21. Installation Department;

[0025] 31. First connecting part; 32. Second connecting part; 33. Clamping part; 34. Fastening screw;

[0026] 311. Fixing groove;

[0027] 321. External thread groove;

[0028] 41. Bolt; 42. Compression nut; 43. Spring washer; 44. Flat washer;

[0029] 51. First protective component; 52. O-ring seal;

[0030] 511. Groove; 512. Extension; 513. Anti-reverse part; 514. Crease groove; 515. Relief groove; 516. Pressing cap;

[0031] 61. Second protective component; 62. Sealing gasket; 63. Spring;

[0032] 611. First countersunk hole; 612. Operating part; 613. Second countersunk hole;

[0033] 621. Protrusion. Detailed Implementation

[0034] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0037] Reference example Figures 1 to 5A stable pole-mounted circuit breaker includes a mounting plate 1 and a pole-mounted circuit breaker body 2. The pole-mounted circuit breaker body 2 has mounting portions 21 on both sides. The mounting plate 1 has a first recess 11 with an opening to accommodate the mounting portions 21. A second recess 12 corresponding to the first recess 11 is provided on the back of the mounting plate 1. Pressure plates 3 are inserted into the first recess 11 and the second recess 12, with one pressure plate 3 abutting against the mounting portion 21. The pressure plates 3 are integrally formed. At least one first connecting portion 31 and at least one second connecting portion 32 are provided on each of the two end faces of the pressure plates 3. A fastening assembly 4 is provided between the first connecting portion 31 and the second connecting portion 32, passing through the mounting portion 21. A first protective assembly 5 is provided on the outer wall of the first connecting portion 31 and is fastened to the outer wall of the first connecting portion 31. The first protective assembly 5 has a groove 511 for preventing the fastening assembly 4 from rotating. A second protective assembly 6 is threadedly connected to the outer wall of the second connecting portion 32. The 6 is equipped with a component for increasing the pre-tightening force of the fastening assembly 4. The pressure plate 3 and multiple fastening assemblies 4 work together to securely clamp the mounting part 21 within the first recess 11. Furthermore, the pressure plate 3 abuts against the side walls of the first and second recesses 11 and 12, reducing the lateral sway of the pole-mounted circuit breaker body 2 and effectively preventing the risk of chain-reaction loosening caused by the loosening of a single fastening assembly 4. The groove 511 limits the fastening assembly 4, preventing it from rotating under the vibration of the circuit breaker. The first protective assembly 5, through the engagement of the anti-retraction part 513 with the outer wall of the first connecting part 31, achieves a stable connection without violent disassembly, significantly improving the reliability of the connection between the fastening assembly 4 and the pressure plate 3. Simultaneously, the second protective assembly 6 uses a spring 63 to apply a continuous force to the fastening assembly 4, enhancing the friction between the fastening assembly 4 and the second connecting part 32, thereby effectively increasing the pre-tightening force and ensuring the stability of the connection.

[0038] It is worth mentioning that the fastening assembly 4 includes a bolt 41 and a clamping nut 42. The shank of the bolt 41 is sequentially fitted with a spring 63, a washer 43, and a flat washer 44. The flat washer 44 abuts against the end face of the first connecting part 31. The clamping nut 42 is threadedly connected to the bolt 41 and abuts against the end face of the second connecting part 32.

[0039] It is worth mentioning that the outer wall of the first connecting part 31 is provided with a fixing groove 311, which is located at the bottom of the first connecting part 31. The fixing groove 311 is a ring design.

[0040] It is worth mentioning that the first protective component 5 includes a first protective member 51 and at least one O-ring 52 disposed on its inner wall. A groove 511 is disposed in the first protective member 51, and the shape of the groove 511 is set to correspond to the shape of the head of the bolt 41. One end of the first protective member 51 is provided with a plurality of equally spaced extensions 512 evenly distributed along the circumferential direction. There is a gap between adjacent extensions 512 for them to move. The inner wall of the extension 512 is provided with a backstop 513 and is embedded in a fixing groove 311. The part of the extension 512 that meets the protective member is provided with a crease groove 514. The two sides of the extension 512 are provided with clearance grooves 515 for disassembly tools to enter. The other end of the first protective member 51 is provided with a clamping cap 516. The groove 511 is aligned with the head of the tightened bolt 41, and a downward force is applied to the clamping cap 516. Then, the backstop is activated. When part 513 first enters the outer wall of the first connecting part 31, the inclined surface at the bottom of the stop part 513 is squeezed by the first connecting part 31, causing the extension part 512 to expand outward, thereby satisfying the diameter between the stop parts 513 to enter the first connecting part 31. When the stop part 513 is embedded in the fixing groove 311, the connection with the first connecting part 31 is completed. When the first protective member 51 needs to be disconnected from the first connecting part 31, a tool is used to enter between the extension part 512 and the first connecting part 31 using the clearance groove 515. Using the adjacent extension part 512 as a fulcrum, a force is applied to the tool to pry the extension part 512 outward until the extension part 512 bends beyond the upper limit of structural strength and breaks from the crease groove 514. When all extension parts 512 are disassembled according to the above operation steps, the connection between the first protective member 51 and the first connecting part 31 can be disconnected.

[0041] It is worth mentioning that the outer wall of the second connecting part 32 is provided with an external threaded groove 321;

[0042] It is worth mentioning that the second protective component 6 includes a second protective member 61 and a sealing washer 62 abutting against its end face. The second protective member 61 is threaded into an external thread groove 321. The entrance of the second protective member 61 is provided with a first countersunk hole 611. The sealing washer 62 is provided with a protrusion 621 and is embedded in the first countersunk hole 611. The second protective member 61 is provided with an operating part 612 for tool operation. The interior of the second protective member 61 is provided with a second countersunk hole 613 for avoiding the bolt 41. The second countersunk hole 613 is fixed with a spring 63 and acts on the clamping nut 42. The protrusion 621 and the first The countersunk hole 611 forms a labyrinth-like sealing structure, enhancing the sealing between the second protective member 61 and the second connecting part 32. As the second protective member 61 is tightened, the force exerted by the spring 63 on the nut gradually increases. In addition, the diameter of the spring 63 is larger than the diameter of the bolt 41 to prevent the bolt 41 from entering the second countersunk hole 613. When the fastening assembly 4 is tightened, the end of the bolt 41 shank maintains a distance from the second countersunk hole 613. Therefore, when this technical solution is adopted, a bolt 41 of a specific length needs to be used, mainly to prevent the bolt 41 from contacting the second countersunk hole 613 after tightening.

[0043] It is worth mentioning that a pressing part 33 is provided on one side of the pressure plate 3 and abuts against both sides of the mounting plate 1. Fastening screws 34 are provided on both sides of the pressing part 33 and are threadedly connected to the mounting plate 1. The connection stability between the mounting part 21 and the first cavity 11 is further enhanced by the fastening screws 34.

[0044] It is worth mentioning that the component that increases the pre-tightening force of the fastening component 4 is a spring 63. By setting the first protective component 51 and the second protective component 61, the fastening component 4 is effectively prevented from direct contact with external humid air, water vapor and rainwater. At the same time, the O-ring seal 52 and sealing gasket 62 are used to further prevent the fastening component 4 from reacting chemically with the external environment, thereby avoiding corrosion and rust. This ensures that the strength and fastening performance of the fastening component 4 are not weakened, and reduces the possibility of loosening due to surface roughness or pitting, so that the product has good protective performance.

[0045] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A stable pole-mounted circuit breaker, comprising a mounting plate (1) and a pole-mounted circuit breaker body (2), wherein mounting portions (21) are provided on both sides of the pole-mounted circuit breaker body (2), characterized in that: The mounting plate (1) is provided with a first recess (11) with an opening to accommodate the mounting part (21). The back of the mounting plate (1) is provided with a second recess (12) corresponding to the first recess (11). A pressure plate (3) is inserted into the first recess (11) and the second recess (12). One of the pressure plates (3) abuts against the mounting part (21). The pressure plate (3) is configured as an integrated structure. At least one first connecting part (31) and a second connecting part (32) are provided on both ends of the pressure plate (3). A fastening component (4) is provided between the first connecting part (31) and the second connecting part (32) and passes through the mounting part (21). A first protective component (5) is provided on the outer wall of the first connecting part (31) and is pressed against the outer wall of the first connecting part (31). The first protective component (5) is provided with a groove (511) for preventing the fastening component (4) from rotating. A second protective component (6) is threadedly connected to the outer wall of the second connecting part (32). The second protective component (6) is provided with a component for increasing the pre-tightening force of the fastening component (4).

2. The pole-mounted circuit breaker with stable connection according to claim 1, characterized in that: The fastening assembly (4) includes a bolt (41) and a clamping nut (42). The shank of the bolt (41) is fitted with a spring (63), a washer (43), and a flat washer (44) in sequence. The flat washer (44) abuts against the end face of the first connecting part (31). The clamping nut (42) is threaded to the bolt (41) and abuts against the end face of the second connecting part (32).

3. The pole-mounted circuit breaker with stable connection according to claim 2, characterized in that: The outer wall of the first connecting part (31) is provided with a fixing groove (311) and is located at the bottom of the first connecting part (31).

4. The pole-mounted circuit breaker with stable connection according to claim 3, characterized in that: The first protective component (5) includes a first protective member (51) and at least one O-ring (52) disposed on its inner wall. The groove (511) is disposed in the first protective member (51). The shape of the groove (511) is set to correspond to the shape of the head of the bolt (41). One end of the first protective member (51) is provided with a plurality of equally spaced extensions (512) evenly distributed along the circumferential direction. There is a gap between adjacent extensions (512) for them to move. The inner wall of the extension (512) is provided with a stop (513) and embedded in a fixing groove (311). The part of the extension (512) that is in contact with the protective member is provided with a crease groove (514). The two sides of the extension (512) are provided with clearance grooves (515) for disassembly tools to enter. The other end of the first protective member (51) is provided with a clamping cap (516).

5. The pole-mounted circuit breaker with stable connection according to claim 2, characterized in that: The outer wall of the second connecting part (32) is provided with an external thread groove (321).

6. The pole-mounted circuit breaker with stable connection according to claim 5, characterized in that: The second protective component (6) includes a second protective member (61) and a sealing washer (62) abutting against its end face. The second protective member (61) is threadedly connected to an external thread groove (321). The second protective member (61) has a first countersunk hole (611) at its entrance. The sealing washer (62) has a protrusion (621) and is embedded in the first countersunk hole (611). The second protective member (61) has an operating part (612) for tool operation. The second protective member (61) has a second countersunk hole (613) for a relief bolt (41) inside. The second countersunk hole (613) is fixed with a spring (63) and acts on the clamping nut (42).

7. The pole-mounted circuit breaker with stable connection according to claim 1, characterized in that: The pressure plate (3) has a pressing part (33) on one side, which abuts against both sides of the mounting plate (1). The pressing part (33) has fastening screws (34) on both sides, which are threaded to the mounting plate (1).

8. The pole-mounted circuit breaker with stable connection according to claim 6, characterized in that: The component that increases the preload of the fastening assembly (4) is a spring (63).

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