A pole-mounted circuit breaker that is easy to install

Abstract

The utility model discloses a kind of pole circuit breaker convenient to install, including support bottom shell, insulating column, installation bottom plate and fastening bolt.Installation bottom plate outer circle extends support bottom shell as installation part, middle part positioning boss is equipped with taper hole and fixed plugboard;Support bottom shell bottom is equipped with positioning recess, there is adaptive taper column in, both ends are equipped with spigot, install by taper hole and taper column interference fit, fastening bolt and corresponding screw hole thread cooperation is realized.The pole circuit breaker only needs to disassemble both sides fastening bolt to complete disassembly, significantly shorten disassembly time, improve power maintenance efficiency, reduce manpower and time cost;Meanwhile, its cooperation structure realizes accurate positioning, ensures installation stability and equipment operation reliability, provides guarantee for power system stable operation.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a pole-mounted circuit breaker that is easy to install. Background Technology

[0002] In power systems, pole-mounted circuit breakers are widely used in distribution lines, playing a crucial role in controlling and protecting circuits. In existing technology, traditional pole-mounted circuit breakers typically have an integral mounting plate at their bottom, which is then secured to a mounting plate on the pole using multiple bolts to ensure stable installation. However, this installation method reveals significant drawbacks in practical use. When disassembly and maintenance are required, operators must completely unscrew all bolts from the mounting plate and mounting base. The large number of bolts makes the disassembly and assembly process cumbersome and time-consuming, significantly impacting efficiency and increasing the time and labor costs of power maintenance. Furthermore, frequent disassembly and assembly of numerous bolts can easily damage or lose them, further affecting the stability of the equipment and the smooth progress of maintenance work. Therefore, a new pole-mounted circuit breaker structure is urgently needed to address the inconvenience of installation and maintenance in existing technologies. Utility Model Content

[0003] To address the shortcomings of the prior art, this utility model provides a pole-mounted circuit breaker that is easy to install.

[0004] The technical solution adopted by this utility model is: a pole-mounted circuit breaker that is easy to install, including a supporting base shell and insulating columns spaced apart on the supporting base shell, and also including a mounting base plate and fastening bolts. The outer ring of the mounting base plate extends out of the supporting base shell as a mounting part. The mounting part is provided with a plurality of mounting holes spaced apart. The middle part of the mounting base plate protrudes to form a positioning protrusion. The positioning protrusion is provided with a tapered hole. Fixed insert plates are provided at both ends of the positioning protrusion. The fixed insert plates are provided with a first screw hole. The bottom of the supporting base shell is provided with a positioning cavity for the embedding of the positioning protrusion. Several tapered columns adapted to the tapered holes are arranged at intervals in the positioning cavity. The tapered holes and tapered columns are interference-fitted. Both ends of the positioning cavity are provided with sockets for fixing the insertion of the insert plate. The outer wall of the socket is provided with a second screw hole corresponding to the first screw hole. The fastening bolt is threadedly engaged with the first screw hole and the second screw hole.

[0005] Furthermore, the positioning protrusion and the fixing plate are provided with a chamfered structure.

[0006] Furthermore, the cone angle of the conical hole and the conical column is 30-45 degrees.

[0007] Furthermore, the conical columns are divided into two rows, with four conical columns evenly spaced in each row.

[0008] Furthermore, the outer ring of the positioning protrusion is provided with a groove, and the groove is filled with a sealing ring.

[0009] Furthermore, the interference fit between the tapered hole and the tapered column is 0.1-0.5 mm.

[0010] Furthermore, the conical column is made of nylon 66 (PA66) or polyether ether ketone (PEEK), and its mating surface is coated with a silicone oil lubricating layer with a surface roughness Ra≤0.4μm.

[0011] The beneficial effects of this utility model are: Firstly, by setting up a mounting base plate with positioning protrusions and a fixing plate, and a supporting base shell with corresponding positioning cavities, tapered columns, and sockets, and utilizing the interference fit between the tapered holes and tapered columns, as well as the threaded fit between the fastening bolts and the first and second screw holes, disassembly and assembly can be completed simply by removing the fastening bolts on both sides. This design greatly shortens the disassembly and assembly time of the pole-mounted circuit breaker, significantly improves the efficiency of power maintenance work, and greatly reduces labor and time costs.

[0012] Secondly, the matching structure of the positioning protrusion and positioning cavity, the tapered column and tapered hole, and the fixing plate and socket can achieve precise positioning during the installation of the pole-mounted circuit breaker, ensuring the accuracy and stability of the equipment installation position, improving the installation quality and the reliability of equipment operation, and providing a strong guarantee for the stable operation of the power system.

[0013] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0014] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 A schematic diagram of the bottom of the supporting shell.

[0017] Figure 1-2 In the middle: 1. Supporting base shell; 2. Insulating column; 3. Mounting base plate; 4. Fastening bolt; 5. Mounting part; 6. Mounting hole; 7. Positioning protrusion; 8. Tapered hole; 9. Fixing insert plate; 10. First screw hole; 11. Positioning cavity; 12. Tapered column; 13. Insertion port; 14. Second screw hole; 15. Chamfered structure; 16. Groove. Detailed Implementation

[0018] 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.

[0019] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0020] This utility model provides a pole-mounted circuit breaker that is easy to install.

[0021] In this embodiment, refer to Figure 1-2 The easy-to-install pole-mounted circuit breaker includes a supporting base shell 1 and insulating columns 2 spaced apart on the supporting base shell 1, as well as a mounting base plate 3 and fastening bolts 4. The outer ring of the mounting base plate extends out of the supporting base shell as a mounting part 5. The mounting part 5 is provided with a plurality of mounting holes 6 spaced apart. The middle part of the mounting base plate protrudes to form a positioning protrusion 7. The positioning protrusion 7 is provided with a tapered hole 8. Fixed insert plates 9 are provided at both ends of the positioning protrusion. The fixed insert plates 9 are provided with a first screw hole 10. The bottom of the supporting base shell is provided with a positioning cavity 11 for embedding the positioning protrusion. A plurality of tapered pillars 12 adapted to the tapered holes are provided in the positioning cavity 11 at intervals. The tapered holes and tapered pillars 12 are interference fit. Both ends of the positioning cavity are provided with insertion ports 13 for fixing the insertion plate. The outer side wall of the insertion port 13 is provided with a second screw hole 14 corresponding to the first screw hole. The fastening bolt is threadedly engaged with the first screw hole and the second screw hole.

[0022] In the above technical solution, convenient installation is achieved through the cooperation of the mounting base plate and the supporting base shell. The mounting base plate is equipped with positioning protrusions and fixing plates, while the supporting base shell is equipped with corresponding positioning recesses, tapered columns, and insertion ports. The interference fit between the tapered holes and the tapered columns provides pre-tightening force to achieve initial positioning and fixation. After the fixing plates are inserted into the insertion ports, the mounting base plate and the supporting base shell are further firmly connected by fastening bolts through the threaded engagement of the first and second screw holes, forming a double fixing mechanism.

[0023] In practical use, the tapered column, positioning cavity, and socket are connected to the tapered hole, positioning protrusion, and fixing plate, respectively. Then, the fastening bolts are screwed into the first and second screw holes to fix the mounting base plate to the supporting base shell. During maintenance, only the fastening bolts need to be removed to disassemble and install the circuit breaker, eliminating the need to remove multiple bolts from the mounting base plate and the mounting plate on the pole. This significantly improves the efficiency of power maintenance work; reduces the number of bolts used and the frequency of disassembly and assembly, lowers the risk of bolt damage or loss, ensures equipment installation stability, and reduces maintenance costs and potential equipment failures.

[0024] Specifically, the positioning protrusion and the fixing plate are provided with a chamfered structure 15.

[0025] In this embodiment, a chamfered structure is provided on the positioning protrusion and the fixing plate. Utilizing the inclined surface characteristics of the chamfer, the chamfered structure can guide the positioning protrusion and the fixing plate to be inserted more smoothly into the positioning cavity and the insertion port during the installation process, reducing resistance and friction during insertion.

[0026] Specifically, the cone angle of the conical hole and the conical column is 30-45 degrees.

[0027] In this embodiment, the cone angle of the tapered hole and the tapered column is set between 30 and 45 degrees. This angle range can balance the preload of the interference fit and the difficulty of disassembly in mechanical fitting. If the angle is too small, the interference fit will be difficult to disassemble; if the angle is too large, the preload will be insufficient and the connection stability will be poor. This angle range can ensure that the tapered column and the tapered hole have sufficient connection strength and stability under interference fit, while not being too difficult to disassemble.

[0028] Specifically, the conical columns are divided into two rows, with four conical columns evenly spaced in each row.

[0029] In this embodiment, the conical columns are arranged in two rows, with four columns evenly spaced in each row. By rationally arranging the number and pattern of the conical columns, and utilizing the principle of multi-point support, the force between the positioning protrusion and the supporting base shell is made more uniform. The multi-point distributed conical columns can disperse the external force on the mounting base plate, avoiding excessive local stress.

[0030] Specifically, the outer ring of the positioning protrusion is provided with a groove 16, and the groove is filled with a sealing ring.

[0031] In this embodiment, a groove is provided on the outer ring of the positioning protrusion and filled with a sealing ring. Utilizing the elastic deformation characteristics of the sealing ring, when the positioning protrusion is embedded in the positioning cavity, the sealing ring is squeezed to fill the gap, forming a sealing structure that prevents external dust, rainwater and other impurities from entering the interior.

[0032] Specifically, the interference fit between the tapered hole and the tapered column is 0.1-0.5 mm.

[0033] In this embodiment, the interference fit between the tapered hole and the tapered column is controlled at 0.1-0.5mm. This interference fit range is determined by comprehensively considering the mechanical fit strength and ease of disassembly. This ensures that sufficient preload is formed between the tapered column and the tapered hole to ensure a stable connection, while also facilitating disassembly during maintenance.

[0034] Specifically, the conical column is made of nylon 66 (PA66) or polyether ether ketone (PEEK), and its mating surfaces are coated with a silicone oil lubricating layer with a surface roughness Ra≤0.4μm.

[0035] In this embodiment, the tapered column is made of nylon 66 (PA66) or polyetheretherketone (PEEK), materials that possess excellent wear resistance, self-lubrication, and mechanical strength. The mating surfaces are lubricated with silicone oil to further reduce the surface friction coefficient; the surface roughness Ra ≤ 0.4 μm, making the surface smoother. Through the combined effect of material properties, lubrication treatment, and surface machining precision, the frictional resistance when the tapered column mates with the tapered hole is reduced.

[0036] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A pole-mounted circuit breaker that is easy to install, comprising a supporting base and insulating posts spaced apart on the supporting base, characterized in that: It also includes a mounting base plate and fastening bolts. The outer ring of the mounting base plate extends out of the support base shell as a mounting part. The mounting part is provided with a number of mounting holes at intervals. The middle part of the mounting base plate protrudes to form a positioning protrusion. The positioning protrusion is provided with a tapered hole. Fixed insert plates are provided at both ends of the positioning protrusion. The fixed insert plates are provided with a first screw hole. The bottom of the supporting base shell is provided with a positioning cavity for the embedding of the positioning protrusion. Several tapered columns adapted to the tapered holes are arranged at intervals in the positioning cavity. The tapered holes and tapered columns are interference-fitted. Both ends of the positioning cavity are provided with sockets for fixing the insertion of the insert plate. The outer wall of the socket is provided with a second screw hole corresponding to the first screw hole. The fastening bolt is threadedly engaged with the first screw hole and the second screw hole.

2. The pole-mounted circuit breaker for easy installation according to claim 1, characterized in that: The positioning protrusion and the fixing plate are provided with a chamfered structure.

3. The pole-mounted circuit breaker for easy installation according to claim 1, characterized in that: The cone angle of the conical hole and the conical column is 30-45 degrees.

4. The pole-mounted circuit breaker for easy installation according to claim 1, characterized in that: The conical columns are divided into two rows, with four conical columns evenly spaced in each row.

5. The pole-mounted circuit breaker for easy installation according to claim 1, characterized in that: The outer ring of the positioning protrusion is provided with a groove, and the groove is filled with a sealing ring.

6. The pole-mounted circuit breaker for easy installation according to claim 1, characterized in that: The interference fit between the tapered hole and the tapered column is 0.1-0.5 mm.

7. The pole-mounted circuit breaker for easy installation according to claim 1 or 6, characterized in that: The conical column is made of nylon 66 or polyetheretherketone, and its mating surfaces are coated with a silicone oil lubricating layer with a surface roughness Ra≤0.4μm.

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