A convenient pole-mounted circuit breaker

Abstract

This invention relates to the field of circuit breaker technology, and more particularly to a conveniently installed pole-mounted circuit breaker. The invention provides such a conveniently installed pole-mounted circuit breaker, comprising a mounting frame, a circuit breaker, a positioning plate, a support plate, a buffer spring, V-shaped slot blocks, a positioning rod, and a positioning assembly. The mounting frame is fixedly installed on a power pole of the power transmission and distribution network via a clamp assembly, and the support plate is horizontally installed at the top inside the mounting frame. Through the interlocking engagement of the V-shaped slot blocks on both sides of the positioning plate with the positioning rod of the circuit breaker, the automatic centering characteristic of the V-shaped structure enables rapid and accurate horizontal positioning of the circuit breaker. Combined with the interlocking engagement of the locking blocks in the positioning assembly with the locking slots of the connecting strip, the circuit breaker can be installed quickly. During disassembly, simply lifting the circuit breaker with a crane allows all components to automatically unlock and reset, significantly shortening installation and maintenance time, improving work efficiency, and reducing the difficulty and labor intensity of manual operation.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, and in particular to a convenient pole-mounted circuit breaker. Background Technology

[0002] In modern power transmission and distribution networks, pole-mounted circuit breakers are key equipment for ensuring the safe and stable operation of power systems, and are widely used in the segmentation, interconnection, and protection control of overhead distribution lines. Their main function is to connect and disconnect circuits under normal and fault conditions, playing a crucial role in the reliability and safety of the power system.

[0003] Currently, most existing pole-mounted circuit breakers are installed on utility poles using traditional methods such as bolt fastening or welding. These methods have several drawbacks: firstly, the installation process is cumbersome, requiring workers to perform complex operations at heights, which not only consumes a lot of time and manpower but also results in low installation efficiency; secondly, traditional installation methods make it difficult to achieve precise positioning and rapid installation of the circuit breaker, and positional deviations are prone to occur during installation, affecting the normal operation of the equipment.

[0004] Furthermore, in terms of circuit breaker maintenance and repair, traditional installation structures are difficult to disassemble, requiring the use of various tools, which increases maintenance difficulty and time costs. Once a circuit breaker malfunctions, the inability to quickly disassemble and repair it will lead to prolonged power supply interruptions, affecting power supply reliability and user experience.

[0005] In summary, existing pole-mounted circuit breaker installation technologies have significant shortcomings in terms of installation efficiency and ease of maintenance. There is an urgent need to develop a pole-mounted circuit breaker that can be installed quickly and accurately and is easy to disassemble and maintain, in order to meet the needs of modern power transmission and distribution networks for efficient, safe, and stable operation. Summary of the Invention

[0006] To overcome the shortcomings mentioned in the background art, the technical problem to be solved is to provide a conveniently installed pole-mounted circuit breaker.

[0007] The technical implementation scheme of the present invention is as follows: A conveniently installed pole-mounted circuit breaker includes a mounting frame, a circuit breaker, a positioning plate, a support plate, a buffer spring, a V-shaped groove block, a positioning rod, and a positioning assembly. The mounting frame is fixedly installed on the power pole of the power transmission and distribution network by a clamp assembly. The support plate is horizontally installed at the top of the mounting frame. The bottom of the positioning plate is installed at the top of the mounting frame by multiple telescopic rods. The lower end of the telescopic rod passes through the mounting frame and is fixedly connected to the support plate. A buffer spring is sleeved on the outside of the telescopic rod, and its upper and lower ends are respectively connected to the bottom surface of the positioning plate and the top surface of the support plate. V-shaped groove blocks are connected to the two side walls of the positioning plate. The circuit breaker is placed on the top of the positioning plate. Positioning rods are connected to the left and right sides of the circuit breaker respectively. The positioning rods and the sliding groove in the middle of the V-shaped groove block form a snap-fit ​​engagement. The mounting frame is provided with a positioning assembly.

[0008] As a further preferred option, the surface of the central groove of the V-shaped groove block is coated with a polytetrafluoroethylene (PTFE) friction-reducing coating.

[0009] As a further preferred embodiment, the positioning assembly includes connecting strips, a support frame, sliders, buffer shafts, return springs, locking blocks, and pulleys. The support frame is connected to the top center of the mounting bracket. Sliders are slidably connected to the front and rear sides of the support frame. Three return springs are spaced between two sliders. Buffer shafts are rotatably connected to the outer sides of the sliders for contact and engagement with the circuit breaker wall. Two pulleys are rotatably connected to the inner side of the sliders, and the pulleys slide and engage with the inside of the support frame. Three locking blocks are spaced apart on the outer bottom of the sliders. Connecting strips are connected to the front and rear side walls of the lower inner side of the circuit breaker. The upper and lower walls of the connecting strips are designed with a sloping structure, and multiple locking slots are spaced apart on the inner side. The locking slots and locking blocks form a locking engagement relationship.

[0010] As a further preferred option, the positioning plate also includes rollers, with two sets of rollers on each side of the positioning plate, each set consisting of four rollers, and the rollers are rotatably connected to the positioning plate.

[0011] As a further preferred embodiment, it also includes a locking assembly, which includes locking blocks, rollers, rocker arms, push blocks, racks, tension springs, gears, and limiting components. Guide grooves are provided on both sides of the top of the mounting frame, with locking blocks slidably connected to the grooves. Rollers are rotatably connected to the side walls of the locking blocks. A rocker arm is rotatably connected to the center of the upper part of the mounting frame. The left end of the rocker arm is designed with an ergonomic handle structure, and the right end is limited by a limiting hook that forms a limit with a preset hanging point on the mounting frame. Push blocks are symmetrically connected to the top left end of the rocker arm, and a guide slope is machined on the upper surface of the push block. This slope cooperates with the outer guide surface of the locking blocks. Racks are connected to the inner sides of the two locking blocks respectively. A gear is rotatably connected to the top center of the support plate via a bearing. The two racks are distributed one in front of the other and both mesh with the gear. Tension springs are connected between the two racks and the support plate. Limiting components are provided on the mounting frame.

[0012] As a further preferred embodiment, the limiting component includes a mounting block, a limiting block, a locking spring, and a protrusion. The mounting block is mounted on the upper left side of the mounting frame, and the limiting block is slidably connected to the mounting block. The inner side of the limiting block is beveled, and two locking springs are connected between the limiting block and the mounting frame. The inner side of the limiting block is symmetrically machined with positioning arcs that fit against the outer circular surface of the rocker arm handle. The upper front and rear sides of the left end handle of the rocker arm are connected with protrusions. The front and rear ends of the top of the limiting block are respectively provided with notches, and the protrusions and notches form a locking fit relationship.

[0013] As a further preferred embodiment, a reinforcement component is also included, which includes a screw and a U-shaped lifting block. The screw is threadedly connected to the middle of the gear and passes through the bearing of the gear. The upper end of the screw is rotatably connected to the U-shaped lifting block through a thrust ball bearing. The U-shaped lifting block extends upward through the mounting frame and into the support frame. Its upper end is machined to form a beveled structure, which forms a line contact fit with the pulley on the slider.

[0014] As a further preferred option, the circuit breaker housing is made of high-strength flame-retardant engineering plastic, specifically reinforced polycarbonate (PC).

[0015] The beneficial effects of this invention are as follows: 1. By engaging the V-shaped groove blocks on both sides of the positioning plate with the circuit breaker positioning rod, the automatic centering characteristics of the V-shaped structure are utilized to achieve rapid and accurate horizontal position correction of the circuit breaker; in conjunction with the engagement of the locking blocks and connecting strip slots in the positioning assembly, the circuit breaker installation can be completed quickly. During disassembly, the circuit breaker can be lifted with the help of a crane, and each component can be automatically unlocked and reset, significantly shortening the installation and maintenance time, improving work efficiency, and reducing the difficulty and labor intensity of manual operation.

[0016] 2. The positioning component, locking component, and reinforcement component work together to provide omnidirectional positioning and fixation of the circuit breaker from multiple directions, including front and back, left and right, and up and down. The positioning component achieves precise horizontal positioning and locking of the circuit breaker; the locking component restricts the upward displacement of the positioning rod from above; and the reinforcement component, through the cooperation of the U-shaped lifting block and pulley, ensures that the locking block and the locking slot are continuously and tightly engaged, effectively resisting external interference such as vibration and wind during the operation of power equipment, ensuring that the circuit breaker will not shift during long-term use, and improving the safety and reliability of equipment operation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the positioning plate, roller, and V-groove block of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the connecting strip, support frame, and positioning rod of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of the support plate, buffer spring, and V-groove block of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the positioning plate, roller, and support plate of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the connecting strip, slot, and support frame components of the present invention;

[0023] Figure 7 This is a schematic diagram of the planar structure of the slider, buffer shaft, and return spring of the present invention;

[0024] Figure 8 This is a schematic diagram of the planar structure of the slider, locking block, and locking slot components of the present invention;

[0025] Figure 9 This is a three-dimensional structural diagram of the components of the present invention, such as the locking block, roller, and rocker arm.

[0026] Figure 10 This is a schematic diagram of the planar structure of the locking block, positioning rod, and rocker arm components of the present invention;

[0027] Figure 11 This is a three-dimensional structural diagram of the rack, tension spring, and gear components of the present invention;

[0028] Figure 12 This is a three-dimensional structural diagram of the rack, support frame, and U-shaped lifting block components of the present invention.

[0029] Figure 13 This is a three-dimensional structural diagram of the gears, screws, and U-shaped lifting blocks of the present invention;

[0030] Figure 14 This is a three-dimensional structural diagram of the mounting block, limiting block, and locking spring of the present invention;

[0031] Figure 15 This is a three-dimensional structural diagram of the components such as the protrusion, rocker arm, and notch of the present invention.

[0032] The markings in the diagram are as follows: 1: Mounting bracket, 101: Circuit breaker, 102: Positioning plate, 103: Roller, 104: Support plate, 105: Buffer spring, 106: V-groove block, 107: Positioning rod, 201: Connecting strip, 202: Slot, 203: Support frame, 204: Slider, 205: Buffer shaft, 206: Return spring, 207: Locking block, 208: Pulley, 301: Locking block, 302: Roller, 303: Rocker arm, 304: Push block, 305: Rack and pinion, 306: Tension spring, 307: Gear, 401: Mounting block, 402: Limiting block, 403: Locking spring, 404: Notch, 405: Positioning arc, 406: Protrusion, 501: Screw, 502: U-shaped lifting block. Detailed Implementation

[0033] Example 1: A convenient pole-mounted circuit breaker, such as Figures 1-8 As shown, the device includes a mounting frame 1, a circuit breaker 101, a positioning plate 102, rollers 103, a support plate 104, a buffer spring 105, a V-groove block 106, a positioning rod 107, and a positioning assembly. The mounting frame 1 is fixedly installed on a power pole of the power transmission and distribution network via a clamp assembly. The support plate 104 is horizontally installed at the top inside the mounting frame 1. The bottom of the positioning plate 102 is installed at the top of the mounting frame 1 via multiple telescopic rods. The lower ends of the telescopic rods pass through the mounting frame 1 and are fixedly connected to the support plate 104. Buffer springs 105 are sleeved on the outside of the telescopic rods, and their upper and lower ends are connected to the bottom surface of the positioning plate 102 and the top surface of the support plate 104, respectively. Two sets of rollers 103 are respectively arranged on the left and right sides of the positioning plate 102, each set consisting of four rollers 103. The rollers 103 are connected to the positioning plate 102 via... The rotating connection method can effectively reduce the frictional resistance during the installation of the circuit breaker 101. V-shaped groove blocks 106 are connected to the left and right side walls of the positioning plate 102 respectively. The circuit breaker 101 is placed on the top of the positioning plate 102. The outer shell of the circuit breaker 101 is made of high-strength flame-retardant engineering plastic, and the material is reinforced polycarbonate (PC), which has good insulation and fire resistance. Positioning rods 107 are welded to the left and right sides of the circuit breaker 101 respectively. The positioning rods 107 and the sliding groove in the middle of the V-shaped groove block 106 form a snap-fit ​​fit to achieve precise positioning of the circuit breaker 101 in the front and back directions. The surface of the sliding groove in the middle of the V-shaped groove block 106 is provided with a polytetrafluoroethylene anti-friction coating, which can reduce the friction when the positioning rod 107 contacts the sliding groove and improve the installation efficiency. The mounting bracket 1 is provided with positioning components.

[0034] like Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, the positioning assembly includes a connecting strip 201, a support frame 203, a slider 204, a buffer shaft 205, a return spring 206, a locking block 207, and a pulley 208. The support frame 203 is bolted to the top center of the mounting bracket 1. Slider 204s are slidably connected to the front and rear sides of the support frame 203. Three return springs 206 are spaced apart between two sliders 204. Buffer shafts 205 are rotatably connected to the outer sides of each slider 204 for contact with the wall surface of the circuit breaker 101. A buffer shaft 205 is rotatably connected to the inner side of each slider 204. Two pulleys 208 slide in the support frame 203, providing guidance and resistance reduction for the smooth sliding of the slider 204. Three locking blocks 207 are welded at intervals on the bottom outer side of the slider 204. Connecting strips 201 are bolted to the lower front and rear side walls of the circuit breaker 101. The upper and lower walls of the connecting strips 201 are designed with a sloping structure, and multiple slots 202 are opened at intervals on the inner side. The slots 202 and the locking blocks 207 form a locking relationship to realize the limiting and fixing of the circuit breaker 101 in the left and right directions.

[0035] During the installation of circuit breaker 101, the mounting frame 1 is first securely fixed to the preset position on the utility pole using clamping assemblies, completing the construction of the basic installation platform. Then, using lifting equipment, circuit breaker 101 is hoisted directly above the mounting frame 1, initially aligning the positioning rod 107 of circuit breaker 101 with the V-shaped grooves 106 on both sides of the positioning plate 102, entering the pre-installation state. During the lowering of circuit breaker 101, the positioning rod 107 slides down along the grooves of the V-shaped grooves 106. Utilizing the automatic centering characteristics of the V-shaped grooves 106, the horizontal position of circuit breaker 101 is precisely corrected, ensuring it is accurately centered on the positioning plate 102. The circuit breaker 101 falls onto the positioning plate 102, and the positioning plate 102 compresses the buffer spring 105 under force, causing the telescopic rod to shorten. The buffer spring 105 performs its elastic buffering function, effectively absorbing the impact force during the installation process and reducing the impact of installation stress on the equipment. As the positioning plate 102 moves down, the inclined surface of the connecting strip 201 inside the circuit breaker 101 contacts the buffer shaft 205. Under the action of the contact force, the buffer shaft 205 pushes the slider 204 to move inward, and the pulley 208 moves synchronously to assist the sliding of the slider 204. The return spring 206 is compressed accordingly. When the slot 202 on the connecting bar 201 aligns with the locking block 207, the return spring 206 rebounds and resets, causing the slider 204, buffer shaft 205, and locking block 207 to move outward. The locking block 207 precisely engages with the slot 202, completing the left-right direction limiting and fixing of the circuit breaker 101. At the same time, after the positioning plate 102 falls, the positioning rod 107 engages with the middle groove of the V-shaped slot block 106, achieving effective front-back direction limiting of the circuit breaker 101. This completes the quick and accurate installation of the circuit breaker 101, ensuring that the circuit breaker 101 remains stable during daily use and does not shift. When disassembling and maintaining the circuit breaker 101, a crane is used to lift the circuit breaker 101 upward. The inclined surface of the top surface of the connecting bar 201 of the circuit breaker 101 first presses the locking block 207, pushing the slider 204 and buffer shaft 205 to move inward, compressing the return spring 206. After the connecting bar 201 is completely disengaged from the locking block 207 and the buffer shaft 205, the return spring 206 rebounds and resets, causing the relevant components to return to their initial state. At the same time, as the circuit breaker 101 is lifted upwards, the positioning plate 102 is no longer under force, the buffer spring 105 releases its elastic force, causing the positioning plate 102 and the V-shaped groove block 106 to move upwards, the telescopic rod extends, and the positioning rod 107 gradually disengages from the V-shaped groove block 106, finally completing the disassembly operation of the circuit breaker 101 and facilitating subsequent maintenance and repair.

[0036] Example 2: Based on Example 1, such as Figure 9 , Figure 10 , Figure 11 , Figure 14 and Figure 15As shown, it also includes a locking assembly, which includes a locking block 301, a roller 302, a rocker arm 303, a push block 304, a rack and pinion 305, a tension spring 306, a gear 307, and a limiting assembly. Guide grooves are provided on the left and right sides of the top of the mounting frame 1, and the locking block 301 is slidably connected to the grooves. The locking block 301 is aligned with the positioning rod 107. Rollers 302 are rotatably connected to the front and rear side walls of the locking block 301 via deep groove ball bearings. A rocker arm 303 is rotatably connected to the upper center of the mounting frame 1 via a pin. The left end of the rocker arm 303 is designed with an ergonomic handle structure, and the right end is connected to the mounting frame 1 via a limiting hook. A preset hanging point forms a limit, causing the rocker arm 303 to be tilted at 45° in a standby state. Push blocks 304 are symmetrically connected to the top left end of the rocker arm 303. The upper surface of the push block 304 is machined with a 30° guide slope, which cooperates with the outer guide surface of the locking block 301. The inner sides of the two locking blocks 301 are respectively welded with rack rods 305. The top middle of the support plate 104 is rotatably connected to a gear 307 through a bearing. The two rack rods 305 are distributed one in front and one behind, and both mesh with the gear 307. Tension springs 306 are connected between the two rack rods 305 and the support plate 104. The mounting bracket 1 is equipped with a limit component for fixing the rocker arm 303.

[0037] like Figure 11 , Figure 14 and Figure 15 As shown, the limiting component includes a mounting block 401, a limiting block 402, a locking spring 403, and a protrusion 406. The mounting block 401 is bolted to the upper left side of the mounting frame 1. The limiting block 402 is slidably connected to the mounting block 401. The inner side of the limiting block 402 is inclined. Two locking springs 403 are connected between the limiting block 402 and the mounting frame 1. The inner side of the limiting block 402 is symmetrically machined with positioning arcs 405 that fit with the outer circular surface of the handle of the rocker arm 303. The upper front and rear sides of the handle part at the left end of the rocker arm 303 are welded with protrusions 406. The front and rear ends of the top of the limiting block 402 are respectively provided with notches 404. The protrusions 406 and the notches 404 form a locking fit relationship.

[0038] After the circuit breaker 101 is initially fixed by the positioning assembly, its stability can be further enhanced by operating the locking assembly and the limiting assembly, changing it from an inclined initial state to a horizontal working state. During rotation, the rocker arm 303 drives the push block 304 and the protrusion 406 to move synchronously. The protrusion 406 first contacts the inclined surface of the limiting block 402. Based on the mechanical transmission principle of the inclined surface mechanism, it pushes the limiting block 402 to slide to the left against the elastic force of the locking spring 403, realizing the pre-unlocking of the limiting block 402. Meanwhile, the handle of the rocker arm 303 is aligned with the positioning arc 405. As the rocker arm 303 continues to rotate, the inclined surface structure of the push block 304 contacts the left locking block 301, and through the inclined... The surface drive pushes the left locking block 301 to slide to the right along the slide groove. When the rocker arm 303 rotates to the horizontal position, the protrusion 406 is just aligned with the notch 404 on the limiting block 402. At this time, the locking spring 403 releases its elastic potential energy, pushing the limiting block 402 to move to the right and reset. The limiting block 402 forms a locking connection with the protrusion 406 through the notch 404, realizing the rigid limiting and fixing of the rocker arm 303. The positioning arc 405 fits against the outer circle surface of the handle of the rocker arm 303, realizing stable limiting. During the movement of the left-side locking block 301, the rack rod 305 connected to it moves synchronously, driving the gear 307 to rotate. The gear 307 then drives the rack rod 305 and locking block 301 on the other side to move to the left. During this process, the tension spring 306 is stretched and stores elastic potential energy. Finally, the two locking blocks 301 approach each other and fit around the outside of the positioning rod 107, forming a secondary limit on the positioning rod 107 in the axial direction, effectively preventing the positioning rod 107 from shifting upward, and significantly improving the stability of the circuit breaker 101 after installation. When it is necessary to disassemble and maintain the circuit breaker 101, manually pull the limiting block 402 to the left to compress the locking spring 403, so that the notch 404 of the limiting block 402 separates from the protrusion 406, releasing the limiting constraint on the rocker arm 303. At this time, the rocker arm 303 rotates downwards to reset under its own gravity, and the push block 304 and the protrusion 406 return to their initial positions. After the limit block 402 is released, the locking spring 403 pushes the limit block 402 to move to the right to reset. When the push block 304 is completely disengaged from the left locking block 301, the tension spring 306 releases its stored elastic potential energy, driving the rack rod 305 and the locking block 301 on the corresponding side to move outwards to reset. The gear 307 rotates in the opposite direction to return to its original position, and the locking block 301 releases its restriction on the positioning rod 107, thereby enabling the circuit breaker 101 to be lifted upwards smoothly to complete the disassembly operation, providing efficient and convenient technical support for equipment inspection and maintenance.

[0039] like Figure 12 , Figure 12 and Figure 13As shown, it also includes a reinforcing component, which includes a screw 501 and a U-shaped lifting block 502. The screw 501 is threadedly connected to the middle of the gear 307. The screw 501 passes through the bearing of the gear 307. The upper end of the screw 501 is rotatably connected to the U-shaped lifting block 502 through a thrust ball bearing. This design can ensure the flexible lifting of the U-shaped lifting block 502 and effectively bear the axial load. The U-shaped lifting block 502 extends upward through the mounting frame 1 and into the support frame 203. Its upper end is processed to form a slope structure. The slope forms a line contact relationship with the pulley 208 on the slider 204. The slope mechanism realizes the transmission and conversion of force, providing a continuous and stable clamping force for the slider 204 and the locking block 207.

[0040] After the circuit breaker 101 is initially installed and fixed by the positioning and locking components, the rocker arm 303 is rotated upwards. The rocker arm 303 drives the push block 304 to limit and fix the positioning rod 107. During this operation, the rack and pinion 305 drives the gear 307 to rotate. Based on the principle of threaded transmission, the rotation of the gear 307 is converted into the axial movement of the screw 501, causing the screw 501 to drive the U-shaped lifting block 502 to move upwards in the vertical direction. As the U-shaped lifting block 502 rises, its upper end... The inclined plane gradually comes into contact with the pulley 208 on the slider 204. Based on the mechanical characteristics of the inclined plane mechanism, the U-shaped lifting block 502 applies a continuous horizontal thrust to the slider 204 through the pulley 208. This thrust causes the slider 204 to maintain an outward tendency, thereby ensuring that the locking block 207 and the slot 202 on the circuit breaker 101 connecting strip 201 always remain tightly engaged, achieving secondary reinforcement of the circuit breaker 101 and significantly improving the circuit breaker 101's resistance to vibration and displacement during operation. When the circuit breaker 101 is disassembled for maintenance, the rocker arm 303 loosens, the gear 307 reverses, driving the screw 501 to reverse, which in turn drives the U-shaped lifting block 502 to move downward. As the U-shaped lifting block 502 descends, its inclined plane disengages from the pulley 208, and the slider 204 is no longer subjected to additional clamping force. The slider 204 and the locking block 207 can then move and loosen freely.

Claims

1. A conveniently installed pole-mounted circuit breaker, characterized in that, The device includes a mounting bracket (1), a circuit breaker (101), a positioning plate (102), a support plate (104), a buffer spring (105), a V-groove block (106), a positioning rod (107), and a positioning assembly. The mounting bracket (1) is fixedly installed on the power pole of the power transmission and distribution network by a clamp assembly. The support plate (104) is horizontally installed at the top inside the mounting bracket (1). The bottom of the positioning plate (102) is installed at the top of the mounting bracket (1) by multiple telescopic rods. The lower end of the telescopic rods passes through the mounting bracket (1) and is fixedly connected to the support plate. On the plate (104), a buffer spring (105) is sleeved on the outside of the telescopic rod. Its upper and lower ends are connected to the bottom surface of the positioning plate (102) and the top surface of the support plate (104) respectively. V-shaped groove blocks (106) are connected to the two side walls of the positioning plate (102). The circuit breaker (101) is placed on the top of the positioning plate (102). Positioning rods (107) are connected to the left and right sides of the circuit breaker (101). The positioning rods (107) and the sliding groove in the middle of the V-shaped groove block (106) form a snap-fit ​​fit. The mounting bracket (1) is equipped with a positioning component; The mounting assembly includes a connecting strip (201), a support frame (203), a slider (204), a buffer shaft (205), a return spring (206), a locking block (207), and a pulley (208). The support frame (203) is connected to the top center of the mounting bracket (1). Sliders (204) are slidably connected to the front and rear sides of the support frame (203). Three return springs (206) are spaced apart between the two sliders (204). Buffer shafts (205) are rotatably connected to the outer sides of the sliders (204) for use with the circuit breaker (10). 1) The wall contact fit is provided. Two pulleys (208) are rotatably connected to the inner side of the slider (204). The pulleys (208) slide in the support frame (203). Three locking blocks (207) are connected at intervals on the outer side of the bottom of the slider (204). Connecting strips (201) are connected to the front and rear side walls of the lower side inside the circuit breaker (101). The upper and lower walls of the connecting strips (201) are designed as inclined structures, and multiple slots (202) are opened at intervals on the inner side. The slots (202) and the locking blocks (207) form a locking fit relationship.

2. The convenient-installation pole-mounted circuit breaker as described in claim 1, characterized in that, The surface of the central groove of the V-shaped groove (106) is coated with a polytetrafluoroethylene friction-reducing coating.

3. The convenient-installation pole-mounted circuit breaker as described in claim 1, characterized in that, The positioning plate (102) also includes rollers (103). Two sets of rollers (103) are respectively set on both sides of the positioning plate (102). Each set consists of four rollers (103). The rollers (103) are rotatably connected to the positioning plate (102).

4. A convenient pole-mounted circuit breaker as described in claim 1, characterized in that, It also includes a locking assembly, which includes a locking block (301), a roller (302), a rocker arm (303), a push block (304), a rack and pinion (305), a tension spring (306), a gear (307), and a limiting assembly. The top two sides of the mounting bracket (1) are respectively provided with guide grooves, and the locking block (301) is slidably connected to the grooves. The roller (302) is rotatably connected to the two side walls of the locking block (301). The rocker arm (303) is rotatably connected to the upper center of the mounting bracket (1). The left end of the rocker arm (303) is designed with an ergonomic handle structure, and the right end is connected to the mounting bracket (1) through a limiting hook. A preset hanging point forms a limit. A push block (304) is symmetrically connected to the top left end of the rocker arm (303). A guide slope is machined on the upper surface of the push block (304). The slope cooperates with the outer guide surface of the locking block (301). A rack rod (305) is connected to the inner side of the two locking blocks (301). A gear (307) is rotatably connected to the top middle of the support plate (104) through a bearing. The two rack rods (305) are distributed one in front and one behind, and both mesh with the gear (307). A tension spring (306) is connected between the two rack rods (305) and the support plate (104). A limit component is provided on the mounting bracket (1).

5. A convenient pole-mounted circuit breaker as described in claim 4, characterized in that, The limiting component includes a mounting block (401), a limiting block (402), a locking spring (403), and a protrusion (406). The mounting block (401) is mounted on the upper left side of the mounting frame (1). The limiting block (402) is slidably connected to the mounting block (401). The inner side of the limiting block (402) is inclined. Two locking springs (403) are connected between the limiting block (402) and the mounting frame (1). The inner side of the limiting block (402) is symmetrically machined with positioning arcs (405) that fit with the outer circular surface of the handle of the rocker arm (303). The upper front and rear sides of the handle part at the left end of the rocker arm (303) are connected with protrusions (406). The front and rear ends of the top of the limiting block (402) are respectively provided with notches (404). The protrusions (406) and the notches (404) form a locking fit relationship.

6. A convenient pole-mounted circuit breaker as described in claim 4, characterized in that, It also includes a reinforcing component, which includes a screw (501) and a U-shaped lifting block (502). The screw (501) is threadedly connected to the middle of the gear (307). The screw (501) passes through the bearing of the gear (307). The upper end of the screw (501) is rotatably connected to the U-shaped lifting block (502) through a thrust ball bearing. The U-shaped lifting block (502) extends upward through the mounting frame (1) and into the support frame (203). Its upper end is processed to form a slope structure. The slope forms a line contact fit with the pulley (208) on the slider (204).

7. A convenient pole-mounted circuit breaker as described in claim 1, characterized in that, The circuit breaker (101) housing is made of high-strength flame-retardant engineering plastic, and the material is reinforced polycarbonate (PC).

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