A pole-mounted circuit breaker with adjustable installation position

Abstract

This invention discloses a pole-mounted circuit breaker with adjustable installation position, belonging to the field of circuit breaker technology. The pole-mounted circuit breaker includes a circuit breaker body, a mounting frame, and a clamping assembly. The mounting frame and the clamping assembly are slidably connected via multiple support slides. The support slides are slidably mounted on the arc-shaped slide rail of the clamping assembly and locked by locking bolts. The clamping assembly includes an upper clamping sleeve, a lower clamping sleeve, and an inner clamp. The upper clamping sleeve is inserted into the lower clamping sleeve. The lower end of the upper clamp and the upper end of the inner clamp have elliptical arc-shaped inserts, and the inner side of the lower clamp has an arc-shaped groove, forming a one-way locking structure that is easy to insert but difficult to remove. The connecting sleeve of the mounting frame is connected to the inner clamp through an inner pressure sleeve and a spring. The weight of the circuit breaker body pushes the spring and the inner pressure sleeve to compress the arc-shaped insert of the inner clamp, achieving gravity self-locking clamping reinforcement. This invention not only allows for flexible adjustment of the installation position but also ensures long-term anti-loosening of the clamping structure, significantly improving the installation convenience and operational reliability of the pole-mounted circuit breaker.

Description

Technical Field

[0001] This invention relates to the field of pole-mounted circuit breaker technology, and more specifically to a pole-mounted circuit breaker with adjustable installation position. Background Technology

[0002] Pole-mounted circuit breakers are important electrical devices widely used in power distribution networks. They are typically installed on utility poles to connect and disconnect load currents and short-circuit currents, serving to protect and control the lines. The installation quality and reliability of pole-mounted circuit breakers directly affect the safe and stable operation of the power distribution network.

[0003] In existing pole-mounted circuit breaker installation technology, the circuit breaker body is typically fixed to the utility pole using a mounting bracket and a clamping assembly. The clamping assembly generally includes a clamping structure, which secures the mounting bracket to the corresponding position on the utility pole, and then the circuit breaker body is fixed to the mounting bracket. However, this traditional installation structure has the following prominent problems: First, the direction of the circuit breaker is inconvenient to adjust after installation. Currently, the mounting bracket and clamping assembly of pole-mounted circuit breakers are mostly fixedly connected. Once the clamping assembly is tightened to the pole, the position of the mounting bracket is locked, and the orientation and angle of the circuit breaker body cannot be adjusted. However, in actual construction and maintenance, it is often necessary to make minor adjustments to the installation orientation of the circuit breaker. For example, the direction of the lead wires needs to be adjusted to adapt to different wiring paths during wiring, or the operating surface of the circuit breaker needs to be adjusted for easier operation during maintenance. Since the existing structure lacks adjustment capabilities, construction personnel can only disassemble and reinstall the clamping assembly, which is cumbersome, inefficient, and may cause the clamping assembly to loosen when repeatedly disassembled and reassembled. While some existing technologies attempt to achieve angle adjustment through a rotating structure, their adjustment range is limited, and they lack an effective locking mechanism after adjustment, making them prone to displacement during use.

[0004] Secondly, the clamping structure between the circuit breaker and the utility pole is prone to loosening. Pole-mounted circuit breakers operate outdoors for extended periods, enduring various alternating loads such as wind loads, conductor tension, operational vibrations, and thermal expansion and contraction caused by temperature changes. Existing clamping assemblies are mostly simple clamp structures, secured to the utility pole with bolts. Under long-term alternating loads, the bolt connection is prone to loosening, and the friction between the clamp and the utility pole gradually decreases, leading to the clamping structure loosening. Once the clamping structure loosens, the circuit breaker itself will shift or even fall, seriously threatening the safety of power grid operation and personal safety. Furthermore, existing clamping structures lack self-locking or force-enhancing mechanisms, failing to utilize the circuit breaker's own weight to strengthen the clamping effect; the clamping force relies entirely on the bolt preload, resulting in insufficient reliability.

[0005] To address the aforementioned issues, there is an urgent need for a pole-mounted circuit breaker installation structure that can both allow for flexible adjustment of the installation position and ensure the long-term reliable and non-loosening of the clamping structure. Summary of the Invention

[0006] In view of the technical problems in the prior art, such as the inconvenience of adjusting the direction of the pole-mounted circuit breaker after installation and the easy loosening of the clamping structure between the circuit breaker and the utility pole, the present invention provides a pole-mounted circuit breaker with adjustable installation position.

[0007] An adjustable pole-mounted circuit breaker includes a circuit breaker body, a mounting bracket for mounting the circuit breaker body, and a clamping assembly for clamping the mounting bracket to the utility pole.

[0008] The mounting bracket and the clamping assembly are slidably connected by multiple support slides, which are slidably installed on the upper and middle parts of the clamping assembly. The clamping assembly includes an upper clamping sleeve, a lower clamping sleeve, and an inner clamp. The upper clamping sleeve is inserted into the lower clamping sleeve, the inner clamp is fitted at the corresponding position on the utility pole, the lower clamping sleeve is fitted onto the outside of the inner clamp, and the lower end of the upper clamping sleeve is located between the inner clamp and the lower clamping sleeve and abuts against both of them.

[0009] The mounting bracket includes a mounting plate and a connecting sleeve. The mounting plate is fixedly connected to the top of the connecting sleeve, and the connecting sleeve is rotatably mounted on the top of the upper hoop assembly. The lower end of the mounting plate has multiple support feet, each connected to a corresponding support slide. The corresponding support slides are slidably mounted on the upper and lower hoop assemblies. The lower end of the connecting sleeve is connected to the top of the inner hoop via an inner pressure sleeve. The inner pressure sleeve is fitted onto the utility pole, with its lower end abutting against the end of the inner hoop, and its middle section connected to the lower end of the connecting sleeve via a spring.

[0010] The upper hoop assembly is composed of two upper hoops joined together to form a ring-shaped hoop; the lower hoop assembly is composed of two lower hoops joined together. Both the upper and lower hoops are equipped with arc-shaped slide rails, and the support slide block slidably connects to the corresponding arc-shaped slide rail of the upper or lower hoop. The support slide block and the arc-shaped slide rail are connected by locking bolts, which enable sliding and locking between the support slide block and the arc-shaped slide rail. Loosening the locking bolts and pushing the mounting plate allows for adjustment of the axial position of the circuit breaker body located on the mounting plate on the utility pole.

[0011] The support slide on the lower hoop is connected to the two support feet of the mounting plate by a support rod.

[0012] Multiple arc-shaped inserts are provided at the lower end of the upper hoop and the upper end of the inner hoop, with the ends of the arc-shaped inserts being elliptical. An arc-shaped groove is opened in the middle of the inner side of the lower hoop. When the upper hoop, lower hoop, and inner hoop are connected to each other, the two lower hoops are spliced ​​together and fitted over the inner hoop, with their lower ends screwed into the inner hoop. After the upper hoop is spliced, it is inserted between the lower hoop and the inner hoop as a whole. When the end of the arc-shaped insert of the upper hoop contacts the end of the arc-shaped insert of the inner hoop, the arc-shaped insert of the upper hoop presses against the arc-shaped insert of the inner hoop, allowing its end to pass smoothly through the gap between the inner hoop and the lower hoop and extend into the arc-shaped groove of the lower hoop. This makes the upper hoop easy to insert but difficult to remove, thereby achieving a tight clamp between the clamp assembly and the utility pole.

[0013] An inner pressure groove is provided on the inner side of the arc-shaped insert end of the inner clamp, and the lower end of the inner pressure sleeve abuts against the inner pressure groove. Under the gravity of the circuit breaker body, the circuit breaker body, mounting plate, and connecting sleeve push the spring downward. The spring pushes the inner pressure sleeve, and the lower end of the inner pressure sleeve pushes against the arc-shaped insert of the inner clamp, causing the arc-shaped insert of the inner clamp to further compress the arc-shaped insert of the upper clamp outward, thus achieving overall clamping. Beneficial effects

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The installation position is flexibly adjustable. This invention uses an arc-shaped slide rail on the clamping assembly, and the support feet of the mounting bracket are slidably mounted on the arc-shaped slide rail via support slide blocks. When it is necessary to adjust the installation position of the circuit breaker body, simply loosen the locking bolts and push the mounting plate along the arc-shaped slide rail to adjust the axial position of the circuit breaker body on the utility pole. After adjustment, tightening the locking bolts locks the position. The operation is simple and quick, without the need to disassemble the clamping assembly, greatly improving construction and maintenance efficiency. Simultaneously, the connecting sleeve is rotatably mounted on the top of the upper clamping assembly, allowing for circumferential angle adjustment of the circuit breaker body to meet orientation requirements in different installation environments.

[0015] 2. The clamping structure has an anti-loosening function and high clamping reliability. This invention adopts a three-layer clamping structure consisting of an upper clamp, a lower clamp, and an inner clamp. The arc-shaped insert of the upper clamp has an elliptical end. During insertion, it compresses the arc-shaped insert of the inner clamp, causing it to elastically deform and pass through the gap into the arc-shaped groove of the lower clamp, forming a one-way locking effect that is "easy to insert but difficult to remove," effectively preventing the upper clamp from coming off between the lower clamp and the inner clamp. More importantly, this invention utilizes the weight of the circuit breaker itself—under the action of gravity, the circuit breaker body, mounting plate, and connecting sleeve push the spring downwards. The spring pushes the inner pressure sleeve, and the lower end of the inner pressure sleeve pushes against the arc-shaped insert of the inner clamp, causing the arc-shaped insert of the inner clamp to further compress the arc-shaped insert of the upper clamp outwards, thereby strengthening the overall clamping. In other words, the heavier the circuit breaker, the greater the clamping force, achieving a "gravity self-locking" anti-loosening effect, fundamentally solving the problem of easy loosening of traditional clamping structures under long-term alternating loads.

[0016] 3. Compact structure and easy installation. The components of this invention adopt a modular design. The upper and lower clamping sleeve assemblies are each composed of two half-clamps spliced ​​together, facilitating on-site installation on utility poles. The inner pressure sleeve is fitted onto the utility pole and connected to the connecting sleeve via a spring, serving both a force transmission function and a certain degree of shock absorption and buffering effect, thus protecting the circuit breaker body from vibration damage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a side view of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a three-dimensional structural cross-sectional view of the present invention; Figure 5 This is an exploded view of the present invention; The numbers on the map are: 1-Circuit breaker body; 2-Mounting bracket; 21-Mounting plate; 22-Connecting sleeve; 23-Supporting foot; 24-Supporting rod; 3-Clamping assembly; 4-Upper hoop assembly; 41-Upper hoop; 42-Arc-shaped slide rail (upper hoop); 5-Lower hoop assembly; 51-Lower hoop; 52-Arc-shaped slide rail (lower hoop); 53-Arc-shaped groove; 6-Inner hoop; 61-Arc-shaped insert (inner hoop); 62-Inner pressure groove; 7-Support slide; 71-Locking bolt; 8-Inner pressure sleeve; 9-Spring; 10-Arc-shaped insert (upper hoop); 11-Utility pole. Detailed Implementation

[0018] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. Example

[0019] This embodiment provides a pole-mounted circuit breaker with adjustable installation position, such as... Figures 1 to 5 As shown, it includes a circuit breaker body 1, a mounting bracket 2 for mounting the circuit breaker body 1, and a clamping assembly 3 for clamping the mounting bracket 2 to the utility pole 11.

[0020] I. Structure and Installation of the Hoop Assembly The clamping assembly 3 includes an upper clamping sleeve 4, a lower clamping sleeve 5, and an inner clamping sleeve 6. The inner clamping sleeve 6 is a split structure, composed of two semi-circular inner clamping plates spliced ​​together, and is fitted onto the corresponding position on the utility pole 11. The lower clamping sleeve 5 is composed of two lower clamping sleeves 51 spliced ​​together, detachably connected by fastening bolts. The lower clamping sleeve 5 is fitted onto the outside of the inner clamping sleeve 6. The upper clamping sleeve 4 is composed of two upper clamping sleeves 41 spliced ​​together, detachably connected by fastening bolts, forming a ring-shaped clamping sleeve after splicing. The upper clamping sleeve 4 is inserted into the lower clamping sleeve 5, with its lower end located between and abutting against both the inner clamping sleeve 6 and the lower clamping sleeve 5.

[0021] During installation, first, the two semi-circular inner hoops are placed on the corresponding positions of the utility pole 11 and spliced ​​together to form the inner hoop 6; then, the two lower hoops 51 are placed on the outside of the inner hoop 6 and connected by fastening bolts, with the lower end of the lower hoops 51 screwed to the inner hoop 6; finally, the two upper hoops 41 are spliced ​​together and inserted as a whole between the lower hoops 51 and the inner hoop 6 to form a three-layered tight hoop structure.

[0022] II. Anti-loosening fit structure of the upper hoop, lower hoop, and inner hoop The lower end of the upper hoop 41 is provided with multiple arc-shaped inserts 10 (four in this embodiment, evenly distributed along the circumference of the upper hoop 41), and the ends of the arc-shaped inserts 10 are elliptical. The upper end of the inner hoop 6 is also provided with multiple arc-shaped inserts 61 (the number corresponds to the arc-shaped inserts 10 of the upper hoop 41), and the ends of the arc-shaped inserts 61 are also elliptical. An arc-shaped groove 53 is formed in the middle of the inner side of the lower hoop 51.

[0023] When the upper hoop 41, lower hoop 51, and inner hoop 6 are connected to each other, the two lower hoops 51 are spliced ​​together and fitted over the inner hoop 6, with their lower ends screwed into the inner hoop 6. The upper hoop 41 is spliced ​​together and inserted as a whole between the lower hoop 51 and the inner hoop 6. When the end of the arc-shaped insert 10 of the upper hoop 41 contacts the end of the arc-shaped insert 61 of the inner hoop 6, since both ends are elliptical, the arc-shaped insert 10 of the upper hoop 41 squeezes the arc-shaped insert 61 of the inner hoop 6, causing the arc-shaped insert 61 of the inner hoop 6 to undergo a certain elastic deformation, creating a channel so that the end of the arc-shaped insert 10 of the upper hoop 41 can smoothly pass through the gap between the inner hoop 6 and the lower hoop 51 and extend into the arc-shaped groove 53 of the lower hoop 51. Due to the unidirectional guiding effect of the elliptical end, once the arc-shaped insert 10 of the upper hoop 41 enters the arc-shaped groove 53, it will be blocked by the arc-shaped insert 61 of the inner hoop 6 when it is pulled out in the opposite direction, making the upper hoop 41 easy to insert but difficult to pull out, thereby achieving a reliable tight clamp between the clamping assembly 3 and the utility pole 11.

[0024] III. Structure and Installation of the Mounting Rack Mounting bracket 2 includes mounting plate 21 and connecting sleeve 22. Mounting plate 21 is fixedly connected to the top of connecting sleeve 22, and connecting sleeve 22 is rotatably mounted on the top of upper clamping sleeve assembly 4. Specifically, connecting sleeve 22 and the top of upper clamping sleeve assembly 4 are rotatably connected by bearings, so that mounting plate 21 and circuit breaker body 1 mounted thereon can rotate circumferentially around the axis of utility pole 11 to adjust the orientation angle of circuit breaker body 1.

[0025] The lower end of the mounting plate 21 is provided with multiple support feet 23 (four in this embodiment, located at the four corners of the mounting plate 21). Each support foot 23 is connected to a corresponding support slide 7. Both the upper hoop 41 and the lower hoop 51 are provided with arc-shaped slide rails (upper hoop arc-shaped slide rail 42 and lower hoop arc-shaped slide rail 52, respectively), and the support slide 7 is slidably connected to the corresponding arc-shaped slide rail. Specifically, the support slide 7 on the upper hoop 41 is slidably connected to the upper hoop arc-shaped slide rail 42, and the support slide 7 on the lower hoop 51 is slidably connected to the lower hoop arc-shaped slide rail 52.

[0026] The support slide 7 located on the lower hoop 51 is connected to the two support feet 23 of the mounting plate 21 by a support rod 24. One end of the support rod 24 is fixedly connected to the support slide 7, and the other end is fixedly connected to the corresponding support foot 23.

[0027] The support slide 7 and the arc-shaped slide rail are connected by a locking bolt 71. After the locking bolt 71 passes through the threaded hole on the support slide 7, its end abuts against the surface of the arc-shaped slide rail. By tightening and loosening the locking bolt 71, the support slide 7 and the arc-shaped slide rail are locked and slid together.

[0028] IV. Force transmission self-locking structure of inner pressure sleeve and spring The lower end of the connecting sleeve 22 is connected to the top of the inner hoop 6 via an inner pressure sleeve 8. The inner pressure sleeve 8 is fitted onto the utility pole 11, with its lower end abutting against the end of the inner hoop 6, and its middle part connected to the lower end of the connecting sleeve 22 via a spring 9. Specifically, the spring 9 is fitted outside the inner pressure sleeve 8, with its upper end abutting against the lower end of the connecting sleeve 22, and its lower end abutting against the flange in the middle of the inner pressure sleeve 8.

[0029] An inner pressure groove 62 is provided on the inner side of the inner end of the arc-shaped insert 61 of the inner hoop 6, and the lower end of the inner pressure sleeve 8 abuts against the inner pressure groove 62.

[0030] After the circuit breaker body 1 is installed, its weight is transferred to the connecting sleeve 22 via the mounting plate 21. Under the combined weight of the circuit breaker body 1, the mounting plate 21, and the connecting sleeve 22, the connecting sleeve 22 pushes the spring 9 downwards. The spring 9 then compresses and deforms, pushing the inner pressure sleeve 8 downwards. The lower end of the inner pressure sleeve 8 abuts against the inner pressure groove 62 of the arc-shaped insert 61 of the inner clamp 6, causing the arc-shaped insert 61 of the inner clamp 6 to further compress the arc-shaped insert 10 of the upper clamp 41 outwards (i.e., radially outwards). The arc-shaped insert 10 of the upper clamp 41, after being compressed, further expands outwards, making the fit between the upper clamp 41, the lower clamp 51, and the inner clamp 6 tighter, thereby enhancing the overall clamping strength.

[0031] In other words, the heavier the circuit breaker body 1, the greater the compressive force on the spring 9, the greater the pushing force of the inner pressure sleeve 8 on the inner clamp 6, and the greater the clamping force, thus achieving a positive feedback clamping effect of "gravity self-locking" and effectively preventing the clamping assembly 3 from loosening during long-term use.

[0032] V. Adjustment methods for installation stations When it is necessary to adjust the axial position of the circuit breaker body 1 on the utility pole 11, the operator only needs to loosen the corresponding locking bolt 71 to release the lock between the support slide 7 and the arc-shaped slide rail. Then, push the mounting plate 21 along the direction of the arc-shaped slide rail. The mounting plate 21, through the support feet 23 and the support rod 24, drives the support slide 7 to slide along the arc-shaped slide rail, thereby adjusting the axial position of the circuit breaker body 1 on the utility pole 11. After adjustment, retighten the locking bolt 71 to lock the support slide 7 in the corresponding position on the arc-shaped slide rail, completing the adjustment of the installation position.

[0033] When it is necessary to adjust the circumferential angle of the circuit breaker body 1, since the connecting sleeve 22 is rotatably installed on the top of the upper hoop assembly 4, the operator can directly rotate the mounting plate 21 to adjust the angle of the circuit breaker body 1 around the axis of the utility pole 11. Example

[0034] The difference between this embodiment and Embodiment 1 is that the connecting sleeve 22 and the top of the upper clamping sleeve assembly 4 are rotatably connected via a turntable structure. Specifically, the top of the upper clamping sleeve assembly 4 is provided with an annular turntable groove, and the bottom of the connecting sleeve 22 is provided with an annular turntable flange that mates with the annular turntable groove. The annular turntable flange is embedded in the annular turntable groove and can rotate freely. Compared with bearing connections, the turntable structure has better load-bearing capacity and impact resistance, making it more suitable for long-term use in harsh outdoor environments. Example

[0035] The difference between this embodiment and Embodiment 1 is that the inner hoop 6 adopts an integrated ring structure instead of a split structure. For situations where the diameter of the utility pole is small or there is sufficient installation space, the integrated inner hoop 6 can be used and directly fitted onto the corresponding position of the utility pole 11. The integrated inner hoop 6 has higher structural strength and better concentricity, which is beneficial for improving the uniformity and reliability of the tightening. Example

[0036] The difference between this embodiment and Embodiment 1 is that the spring 9 is sleeved on the outside of the inner pressure sleeve 8. The spring 9 makes the force transmission more uniform, avoids the inner pressure sleeve 8 from deflecting during the force process, and further improves the stability and reliability of the clamp. Example

[0037] The difference between this embodiment and Embodiment 1 is that the ends of the arc-shaped inserts 10 and 61 are hemispherical rather than elliptical. The hemispherical ends also have a one-way guiding function, allowing for smooth insertion and obstruction during removal, achieving an "easy to insert, difficult to remove" effect. The hemispherical ends are also easier to process, which helps reduce manufacturing costs. Example

[0038] This embodiment provides an installation method for a pole-mounted circuit breaker with adjustable installation position as described above, including the following steps: Step S1: Place the inner hoop 6 on the predetermined installation position of the utility pole 11, and connect and fix the two semi-circular inner hoop pieces of the inner hoop 6 with fastening bolts.

[0039] Step S2: Place the two lower hoops 51 on the outside of the inner hoop 6 and fix them by fastening bolts, so that the lower end of the lower hoops 51 is screwed to the inner hoop 6.

[0040] Step S3: After splicing the two upper hoops 41 together, insert them as a whole between the lower hoops 51 and the inner hoops 6, so that the arc-shaped insert 10 of the upper hoops 41 passes through the gap between the inner hoops 6 and the lower hoops 51 and extends into the arc-shaped groove 53 of the lower hoops 51, thus completing the installation of the tight hoop assembly 3.

[0041] Step S4: Rotate the connecting sleeve 22 of the mounting bracket 2 onto the top of the upper hoop assembly 4, and fit the inner pressure sleeve 8 onto the utility pole 11, so that the lower end of the inner pressure sleeve 8 abuts against the inner pressure groove 62 of the inner hoop 6. The spring 9 is fitted outside the inner pressure sleeve 8 and connected between the lower end of the connecting sleeve 22 and the inner pressure sleeve 8.

[0042] Step S5: Slide the support slide 7 onto the corresponding arc-shaped slide rail and pre-lock it with the locking bolt 71.

[0043] Step S6: Fix the circuit breaker body 1 onto the mounting plate 21.

[0044] Step S7: Loosen the locking bolt 71 as needed, push the mounting plate 21 along the arc-shaped slide rail to the target position, and then tighten the locking bolt 71 again to complete the adjustment of the installation position.

[0045] By following the steps above, the installation and positioning of the pole-mounted circuit breaker can be completed.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A pole-mounted circuit breaker with adjustable installation position, characterized in that, include: The circuit breaker body (1), the mounting bracket (2) for mounting the circuit breaker body (1), and the clamping assembly (3) for clamping the mounting bracket (2) to the utility pole (11). The mounting bracket (2) and the clamping assembly (3) are slidably connected by a plurality of support slides (7), and the support slides (7) are slidably installed on the upper end and the middle part of the clamping assembly (3); The clamping assembly (3) includes an upper clamping sleeve (4), a lower clamping sleeve (5), and an inner clamp (6). The upper clamping sleeve (4) is inserted into the lower clamping sleeve (5). The inner clamp (6) is fitted onto the corresponding position of the utility pole (11). The lower clamping sleeve (5) is fitted onto the outside of the inner clamp (6). The lower end of the upper clamping sleeve (4) is located between the inner clamp (6) and the lower clamping sleeve (5) and abuts against both of them.

2. The pole-mounted circuit breaker with adjustable installation position according to claim 1, characterized in that, The mounting bracket (2) includes a mounting plate (21) and a connecting sleeve (22). The mounting plate (21) is fixedly connected to the top of the connecting sleeve (22). The connecting sleeve (22) is rotatably mounted on the top of the upper hoop assembly (4). The lower end of the mounting plate (21) is provided with multiple support feet (23). The corresponding support feet (23) are connected to the corresponding support slides (7). The corresponding support slides (7) are slidably mounted on the upper hoop assembly (4) and the lower hoop assembly (5). The lower end of the connecting sleeve (22) is connected to the top of the inner hoop (6) by an inner pressure sleeve (8). The inner pressure sleeve (8) is fitted onto the utility pole (11), with its lower end abutting against the end of the inner hoop (6), and its middle part connected to the lower end of the connecting sleeve (22) by a spring (9).

3. A pole-mounted circuit breaker with adjustable installation position according to claim 2, characterized in that, The upper hoop assembly (4) is formed by splicing two upper hoops (41) together to form a ring hoop; the lower hoop assembly (5) is formed by splicing two lower hoops (51). Both the upper hoop (41) and the lower hoop (51) are provided with arc-shaped slide rails (42, 52), and the support slide (7) is slidably connected to the arc-shaped slide rails (42, 52) corresponding to the upper hoop (41) or the lower hoop (51).

4. The pole-mounted circuit breaker with adjustable installation position according to claim 3, characterized in that, The support slide (7) is connected to the arc-shaped slide rail (42, 52) by a locking bolt (71). The locking bolt (71) enables the sliding and locking between the support slide (7) and the arc-shaped slide rail (42, 52). By loosening the locking bolt (71) and pushing the mounting plate (21), the position of the circuit breaker body (1) located on the mounting plate (21) in the axial direction of the utility pole (11) can be adjusted.

5. The pole-mounted circuit breaker with adjustable installation position according to claim 3, characterized in that, The support slide (7) located on the lower hoop (51) is connected to the two support feet (23) of the mounting plate (21) by a support rod (24).

6. The pole-mounted circuit breaker with adjustable installation position according to claim 3, characterized in that, The lower end of the upper hoop (41) and the upper end of the inner hoop (6) are provided with multiple arc-shaped inserts (10, 61), and the ends of the arc-shaped inserts (10, 61) are elliptical.

7. The pole-mounted circuit breaker with adjustable installation position according to claim 6, characterized in that, An arc-shaped groove (53) is provided in the middle of the inner side of the lower hoop (51). When the upper hoop (41), the lower hoop (51), and the inner hoop (6) are connected to each other, the two lower hoops (51) are spliced ​​together and fitted outside the inner hoop (6), with their lower ends screwed to the inner hoop (6). The upper hoop (41) is spliced ​​together and inserted as a whole between the lower hoop (51) and the inner hoop (6). When the end of the arc-shaped insert (10) of the upper hoop (41) is connected to the inner hoop (6), the lower hoop (51) is inserted between the lower hoop (51) and the inner hoop (6). When the end of the arc-shaped insert (61) of the inner hoop (6) contacts, the arc-shaped insert (10) of the upper hoop (41) squeezes the arc-shaped insert (61) of the inner hoop (6), so that its end can smoothly pass through the gap between the inner hoop (6) and the lower hoop (51) and extend into the arc-shaped groove (53) of the lower hoop (51), making the upper hoop (41) easy to insert but difficult to remove, thereby achieving the tightness between the tight hoop assembly (3) and the utility pole (11).

8. The pole-mounted circuit breaker with adjustable installation position according to claim 6, characterized in that, An inner pressure groove (62) is provided on the inner side of the end of the arc-shaped insert (61) of the inner hoop (6), and the lower end of the inner pressure sleeve (8) abuts against the inner pressure groove (62).

9. The pole-mounted circuit breaker with adjustable installation position according to claim 3, characterized in that, The two upper hoops (41) and the two lower hoops (51) are detachably connected by fastening bolts.

10. The pole-mounted circuit breaker with adjustable installation position according to claim 1, characterized in that, The inner hoop (6) is a split structure, consisting of two semi-circular inner hoop pieces spliced ​​together.

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