Pole-mounted circuit breaker convenient to install

Abstract

The invention relates to the technical field of circuit breakers, in particular to a pole-mounted circuit breaker convenient to install. The pole-mounted circuit breaker convenient to install comprises an installation frame, a circuit breaker body, a positioning plate, a supporting plate, a buffer spring, a V-shaped groove block, a positioning rod and a positioning assembly, the installation frame is fixedly installed on a telegraph pole of an electric power transmission and distribution network through a hoop assembly, and the supporting plate is horizontally installed at the top in the installation frame. Through clamping cooperation of the V-shaped groove blocks on two sides of the positioning plate and the circuit breaker positioning rod, rapid and accurate correction of the horizontal position of the circuit breaker is realized by using the automatic centering characteristic of the V-shaped structure; the circuit breaker can be quickly assembled and disassembled by matching with the clamping connection of the clamping block in the positioning assembly and the clamping groove of the connecting strip, and all the assemblies can be automatically unlocked and reset only by lifting the circuit breaker by virtue of a crane, so that the installation and maintenance time is remarkably shortened, the working efficiency is improved, and the manual operation difficulty and the labor intensity are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a conveniently installed pole-mounted circuit breaker. Background Art

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

[0003] Currently, existing pole-mounted circuit breakers are mostly installed on utility poles using traditional bolt fastening or welding methods. These installation methods have many drawbacks: Firstly, the installation process is cumbersome, requiring workers to perform complex operations at high altitudes, which not only consumes a lot of time and labor costs, but also reduces installation efficiency. Secondly, traditional installation methods make it difficult to accurately position and quickly install the circuit breaker, and position deviations are prone to occur during the installation process, affecting the normal operation of the equipment.

[0004] Furthermore, traditional circuit breaker installations are difficult to disassemble and require multiple tools for maintenance, increasing both the complexity and time required. If a circuit breaker fails, the inability to quickly disassemble and repair it can extend power outages, impacting power supply reliability and user experience.

[0005] In summary, the existing pole-mounted circuit breaker installation technology has obvious defects in installation efficiency and maintenance convenience. It is urgent to develop a pole-mounted circuit breaker that can be installed quickly and accurately and is easy to disassemble and maintain to meet the needs of efficient, safe and stable operation of modern power transmission and distribution networks. Summary of the Invention

[0006] In order 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: a conveniently installed pole-mounted circuit breaker, including 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 electric pole of the power transmission and distribution network through a clamp assembly. The support plate is horizontally installed on the top of the mounting frame. The bottom of the positioning plate is installed on the top of the mounting frame through 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 respectively 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 correspondingly connected to the left and right sides of the circuit breaker. The positioning rods form a snap fit with the sliding groove in the middle of the V-shaped groove block. A positioning assembly is provided on the mounting frame.

[0008] As a further preferred solution, a polytetrafluoroethylene friction-reducing coating is provided on the surface of the middle sliding groove of the V-groove block.

[0009] As a further preferred solution, the positioning assembly includes a connecting bar, a support frame, a slider, a buffer shaft, a return spring, a block and a pulley. The support frame is connected to the middle of the top of the mounting frame. The front and rear sides of the support frame are slidably connected to the sliders. Three return springs are connected at intervals between the two sliders. The outer sides of the sliders are rotatably connected to the buffer shafts for contacting and cooperating with the wall surface of the circuit breaker. The inner sides of the sliders are rotatably connected to the two pulleys. The pulleys slide and cooperate with the inside of the support frame. Three blocks are connected at intervals on the outer side of the bottom of the slider. Connecting bars are respectively connected to the front and rear side walls of the lower side of the circuit breaker. The upper and lower walls of the connecting bar are designed as a slope structure, and a plurality of slots are provided at intervals on the inner side. The slots and the blocks form a snap-fit relationship.

[0010] As a further preferred solution, the positioning plate further includes rollers. Two groups of rollers are respectively provided on both sides of the positioning plate, each group consists of four rollers, and the rollers are connected to the positioning plate in a rotating manner.

[0011] As a further preferred scheme, it also includes a positioning assembly, the positioning assembly includes a positioning block, a roller, a rocker arm, a push block, a rack rod, a tension spring, a gear and a limit assembly, guide slides are respectively provided on both sides of the top of the mounting frame, and the positioning blocks are slidably connected to the slide, and rollers are rotatably connected to the walls on both sides of the positioning block. The upper center of the mounting frame is rotatably connected to the rocker arm, the left end of the rocker arm is designed as an ergonomic handle structure, and the right end is limited by a limit hook and a preset hanging point of the mounting frame. The left end of the top of the rocker arm is symmetrically connected to the push block, and the upper surface of the push block is machined with a guide inclined surface, which cooperates with the outer guide surface of the positioning block. The inner sides of the two positioning blocks are respectively connected to the rack rods, and the middle of the top of the support plate is rotatably connected to the gear through a bearing. The two rack rods are distributed one after the other and are meshed with the gear. Tension springs are connected between the two rack rods and the support plate, and a limit assembly is provided on the mounting frame.

[0012] As a further preferred solution, the limit assembly includes a mounting block, a limit block, a locking spring and a protrusion. The mounting block is installed on the upper left side of the mounting frame. The limit block is slidably connected to the mounting block. The inner side surface of the limit block is inclined. Two locking springs are connected between the limit block and the mounting frame. The inner side surface of the limit block is symmetrically processed with positioning arcs that fit the outer circular surface of the rocker arm handle. The front and rear sides of the upper end of the handle part of the left end of the rocker arm are connected with protrusions. Notches are respectively provided at the front and rear ends of the top of the limit block, and the protrusion and the notch form a snap-fitting relationship.

[0013] As a further preferred solution, a reinforcement component is also included, which includes a screw and a U-shaped lifting block. The screw is threadedly connected to the middle part of the gear, and the screw 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 passes upward through the mounting frame and extends to the inside of the support frame. The front and back surfaces of the upper end are processed to form an inclined surface structure, and the inclined surface forms a line contact fit relationship with the pulley on the slider.

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

[0015] The beneficial effects of the present invention are as follows: 1. By engaging the V-grooved blocks on both sides of the positioning plate with the positioning rods of the circuit breaker and utilizing the automatic centering characteristics of the V-shaped structure, the horizontal position of the circuit breaker can be quickly and accurately corrected; by engaging the clamping blocks in the positioning assembly with the clamping grooves of the connecting strip, the circuit breaker can be quickly installed. When disassembling, the circuit breaker only needs to be lifted with a crane, and the various components can be automatically unlocked and reset, which significantly shortens the installation and maintenance time, improves the working efficiency, and reduces the difficulty and labor intensity of manual operation.

[0016] 2. The positioning assembly, latching assembly, and reinforcement assembly work together to fully position and secure the circuit breaker from multiple directions: front, back, left, right, and top. The positioning assembly precisely positions and locks the circuit breaker horizontally; the latching assembly limits the upward movement of the positioning rod from above; and the reinforcement assembly, through the coordination of a U-shaped lifting block and pulley, ensures a continuous and tight engagement between the latching block and the slot, effectively resisting external interference such as vibration and wind during power equipment operation. This ensures that the circuit breaker will not shift during long-term use, improving the safety and reliability of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the positioning plate, roller and V-groove block and other components of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the connecting strip, support frame, positioning rod and other components of the present invention; Figure 4This is a schematic diagram of the three-dimensional structure of the support plate, buffer spring, V-shaped groove block and other components of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the positioning plate, rollers, support plate and other components of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the connecting strip, the card slot and the supporting frame and other components of the present invention; Figure 7 This is a schematic diagram of the planar structure of the slider, buffer shaft, return spring and other components of the present invention; Figure 8 It is a schematic diagram of the planar structure of the slider, the clamping block and the clamping slot of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the components such as the positioning block, roller and rocker arm of the present invention; Figure 10 It is a schematic diagram of the planar structure of the components such as the positioning block, the positioning rod and the rocker arm of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the rack rod, tension spring, gear and other components of the present invention; Figure 12 It is a schematic diagram of the three-dimensional structure of the rack rod, support frame and U-shaped lifting block and other components of the present invention; Figure 13 It is a schematic diagram of the three-dimensional structure of the gear, screw and U-shaped lifting block and other components of the present invention; Figure 14 It is a schematic diagram of the three-dimensional structure of the mounting block, the limiting block and the retaining spring and other components of the present invention; Figure 15 It is a schematic diagram of the three-dimensional structure of the components such as the bump, rocker arm and notch of the present invention.

[0018] Marked in the figure: 1: mounting frame, 101: circuit breaker, 102: positioning plate, 103: roller, 104: support plate, 105: buffer spring, 106: V-shaped groove block, 107: positioning rod, 201: connecting strip, 202: slot, 203: support frame, 204: slider, 205: buffer shaft, 206: return spring, 207: block, 208: pulley, 301: blocking block, 302: roller, 303: rocker arm, 304: push block, 305: rack rod, 306: tension spring, 307: gear, 401: mounting block, 402: limit block, 403: blocking spring, 404: notch, 405: positioning arc, 406: bump, 501: screw, 502: U-shaped lifting block. DETAILED DESCRIPTION

[0019] Example 1: A conveniently mounted pole-mounted circuit breaker, such as Figures 1-8As shown, it includes a mounting frame 1, a circuit breaker 101, a positioning plate 102, a roller 103, a support plate 104, a buffer spring 105, a V-shaped groove block 106, a positioning rod 107 and a positioning assembly. The mounting frame 1 is fixedly mounted on the power transmission and distribution network pole through a clamp assembly. The support plate 104 is horizontally mounted on the top of the mounting frame 1. The bottom of the positioning plate 102 is mounted on the top of the mounting frame 1 through multiple telescopic rods. The lower end of the telescopic rod passes through the mounting frame 1 and is fixedly connected to the support plate 104. A buffer spring 105 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 102 and the top surface of the support plate 104. Two groups of rollers 103 are respectively provided on the left and right sides of the positioning plate 102, each group consisting of four rollers 103, and the rollers 103 and the positioning plate 102 are arranged. The rotating connection method can effectively reduce the friction resistance during the installation of the circuit breaker 101. The left and right side walls of the positioning plate 102 are respectively connected with V-shaped groove blocks 106. The circuit breaker 101 is placed on the top of the positioning plate 102. The shell of the circuit breaker 101 is made of high-strength flame-retardant engineering plastic. The material is reinforced polycarbonate (PC), which has good insulation and fire resistance. Positioning rods 107 are welded on the left and right sides of the circuit breaker 101. The positioning rods 107 form a snap-fit fit with the slide groove in the middle of the V-shaped groove block 106 to achieve precise positioning of the circuit breaker 101 in the front and rear directions. The surface of the slide groove in the middle of the V-shaped groove block 106 is provided with a polytetrafluoroethylene friction-reducing coating, which can reduce the friction when the positioning rod 107 contacts the slide groove, thereby improving installation efficiency. A positioning component is provided on the mounting frame 1.

[0020] like Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 and Figure 8 As shown, the positioning assembly includes a connecting bar 201, a support frame 203, a slider 204, a buffer shaft 205, a return spring 206, a block 207 and a pulley 208. The top middle of the mounting frame 1 is connected to the support frame 203 by bolts. The front and rear sides of the support frame 203 are slidably connected to the sliders 204. Three return springs 206 are connected between the two sliders 204. The outer sides of the sliders 204 are rotatably connected to the buffer shaft 205 for contacting and cooperating with the wall of the circuit breaker 101. The inner side of the slider 204 is rotatably connected to the Two pulleys 208 slide in cooperation with the inner part of the support frame 203 to provide guidance and drag reduction for the smooth sliding of the slider 204. Three blocks 207 are welded at intervals on the outer side of the bottom of the slider 204. Connecting strips 201 are respectively connected to the front and rear side walls of the lower side of the circuit breaker 101 by bolts. The upper and lower wall surfaces of the connecting strip 201 are designed as a slope structure, and a plurality of slots 202 are provided at intervals on the inner side. The slots 202 form a snap-fit relationship with the blocks 207 to achieve left and right limit fixation of the circuit breaker 101.

[0021] During the installation of the circuit breaker 101, the mounting frame 1 is first firmly fixed to the preset position of the utility pole using the clamp assembly to complete the construction of the basic installation platform. The circuit breaker 101 is then hoisted to the top of the mounting frame 1 using a lifting device, so that the positioning rod 107 of the circuit breaker 101 is initially aligned with the V-groove blocks 106 on both sides of the positioning plate 102, and enters the pre-installation state. During the lowering process of the circuit breaker 101, the positioning rod 107 falls along the slide groove of the V-groove block 106. With the help of the automatic centering feature of the V-groove block 106, the horizontal position of the circuit breaker 101 is accurately corrected to ensure that it is accurately located in the center of the positioning plate 102. The circuit breaker 101 falls onto the positioning plate 102. The positioning plate 102 is subjected to force to compress the buffer spring 105, which drives the telescopic rod to shorten. The buffer spring 105 plays an elastic buffering function, effectively absorbing the impact force during the installation process and reducing the impact of the installation stress on the equipment. As the positioning plate 102 moves downward, the inclined surface of the connecting strip 201 in 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 auxiliary slider 204, and the reset spring 206 is compressed accordingly. When the slot 202 on the connecting bar 201 is aligned with the block 207, the return spring 206 rebounds and resets, driving the slider 204, the buffer shaft 205 and the block 207 to move outward, and the block 207 is accurately snapped into the slot 202, completing the left and right limit fixation of the circuit breaker 101. At the same time, after the positioning plate 102 is completely lowered, the positioning rod 107 is snapped into the middle slide groove of the V-shaped groove block 106 to achieve effective limit of the front and rear directions of the circuit breaker 101. The circuit breaker 101 is installed quickly and accurately, ensuring that the circuit breaker 101 remains stable during daily use without deviation. When disassembling and maintaining the circuit breaker 101, the circuit breaker 101 is lifted up by a crane. The top inclined surface of the connecting bar 201 of the circuit breaker 101 first squeezes the block 207, pushing the slider 204 and the buffer shaft 205 to move inward, compressing the return spring 206. When the connecting bar 201 is completely separated from the block 207 and the buffer shaft 205, the reset spring 206 rebounds and resets, driving the relevant components back to their initial state. At the same time, when the circuit breaker 101 is lifted upward, the positioning plate 102 is no longer under stress, and the buffer spring 105 releases its elastic force, driving the positioning plate 102 and the V-shaped groove block 106 to move upward. The telescopic rod extends, and the positioning rod 107 gradually separates from the V-shaped groove block 106, finally completing the disassembly operation of the circuit breaker 101, facilitating subsequent maintenance and repair.

[0022] Example 2: Based on Example 1, Figure 9 、 Figure 10 、 Figure 11 、 Figure 14 and Figure 15As shown, it also includes a positioning assembly, which includes a positioning block 301, a roller 302, a rocker arm 303, a push block 304, a rack rod 305, a tension spring 306, a gear 307 and a limit assembly. Guide slides are respectively provided on the left and right sides of the top of the mounting frame 1. The positioning block 301 is slidably connected to the slide, and the positioning block 301 is aligned with the positioning rod 107. The roller 302 is rotatably connected to the front and rear walls of the positioning block 301 through deep groove ball bearings. The rocker arm 303 is rotatably connected to the center of the upper part of the mounting frame 1 through a pin shaft. The left end of the rocker arm 303 is designed as an ergonomic handle structure, and the right end is connected to the mounting frame 1 through a limit hook. The preset hanging point forms a limit, so that the rocker arm 303 is in a 45° tilted standby state. A push block 304 is symmetrically connected to the front and rear ends of the top left end of the rocker arm 303. The upper surface of the push block 304 is processed with a 30° guide slope, which cooperates with the outer guide surface of the positioning block 301. Rack rods 305 are welded to the inner sides of the two positioning blocks 301 respectively. A gear 307 is rotatably connected to the middle of the top of the support plate 104 through a bearing. The two rack rods 305 are distributed one in front and one behind, and are both engaged with the gear 307. A tension spring 306 is connected between the two rack rods 305 and the support plate 104. A limit assembly is provided on the mounting frame 1 for fixing the rocker arm 303.

[0023] like Figure 11 、 Figure 14 and Figure 15 As shown, the limit assembly includes a mounting block 401, a limit block 402, a locking spring 403 and a protrusion 406. The mounting block 401 is installed on the upper left side of the mounting frame 1 by a bolt. The limit block 402 is slidably connected to the mounting block 401. The inner side surface of the limit block 402 is inclined. Two locking springs 403 are connected between the limit block 402 and the mounting frame 1. The inner side surface of the limit block 402 is symmetrically processed with positioning arcs 405 that fit the outer circular surface of the handle of the rocker arm 303. Protrusions 406 are welded on the front and rear sides of the upper end of the handle part of the left end of the rocker arm 303. Notches 404 are respectively provided on the front and rear ends of the top of the limit block 402, and the protrusions 406 and the notches 404 form a snap-fitting relationship.

[0024] 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, so that it can be transformed from the initial oblique state to the horizontal working state. During the rotation process, 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. According to the mechanical transmission principle of the inclined surface mechanism, the limiting block 402 is pushed to overcome the elastic force of the locking spring 403 and slide to the left, thereby realizing the pre-unlocking of the limiting block 402. 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 the inclined surface structure of the push block 304 contacts the left locking block 301. The surface transmission 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 aligned with the notch 404 on the limit block 402. At this time, the locking spring 403 releases its elastic potential energy, pushing the limit block 402 to move to the right and reset. The limit block 402 forms a locking connection with the protrusion 406 through the notch 404, realizing the rigid limit fixation of the rocker arm 303, and the positioning arc 405 fits with the outer circular surface of the rocker arm 303 handle to achieve stable limit. When the left locking block 301 moves, the rack rod 305 connected to it moves synchronously, driving the gear 307 to rotate, and the gear 307 then drives the rack rod 305 on the other side and the locking block 301 to move to the left. During this process, the tension spring 306 is stretched, storing elastic potential energy, and finally the two locking blocks 301 approach each other and fit on 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 deviating upward, and significantly improving the stability of the circuit breaker 101 after installation. When the circuit breaker 101 needs to be disassembled for maintenance, the limit block 402 is manually pulled to the left to compress the locking spring 403, so that the notch 404 of the limit block 402 is separated from the protrusion 406, and the limit constraint on the rocker arm 303 is released. At this point, the rocker arm 303 rotates downward under its own weight and resets, causing the push block 304 and the protrusion 406 to return to their initial positions. After releasing the stop block 402, the locking spring 403 pushes the stop block 402 to move rightward and reset. When the push block 304 completely disengages the left stop block 301, the tension spring 306 releases its stored elastic potential energy, driving the corresponding rack rod 305 and the stop block 301 to move outward and reset. The gear 307 rotates in the opposite direction and returns to its original position. The stop block 301 releases the restriction on the positioning rod 107, allowing the circuit breaker 101 to be smoothly lifted upward and disassembled, providing efficient and convenient technical support for equipment inspection and maintenance.

[0025] like Figure 12 、 Figure 12 and Figure 13As shown, a reinforcement component is also included, which includes a screw 501 and a U-shaped lifting block 502. The middle part of the gear 307 is threadedly connected to the screw 501, and 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 not only ensure the flexible lifting and lowering of the U-shaped lifting block 502, but also effectively withstand axial loads. The U-shaped lifting block 502 passes upward through the mounting frame 1 and extends to the inside of the support frame 203. The front and back surfaces of the upper end are processed to form an inclined surface structure. The inclined surface forms a line contact matching relationship with the pulley 208 on the slider 204. The transmission and conversion of force are realized through the inclined surface mechanism, providing a continuous and stable clamping force for the slider 204 and the block 207.

[0026] After the circuit breaker 101 is initially installed and fixed by the positioning assembly and the locking assembly, the rocker arm 303 is rotated upward, and the rocker arm 303 drives the push block 304 to limit and fix the positioning rod 107. During this operation, the rack rod 305 drives the gear 307 to rotate. Based on the principle of screw transmission, the rotation of the gear 307 will be converted into axial movement of the screw rod 501, so that the screw rod 501 drives the U-shaped lifting block 502 to move upward in the vertical direction. As the U-shaped lifting block 502 rises, its upper end The inclined surface gradually abuts against the pulley 208 on the slider 204. Due to the mechanical properties of the inclined surface mechanism, the U-shaped lifting block 502 applies a continuous horizontal thrust to the slider 204 via the pulley 208. This thrust causes the slider 204 to maintain its tendency to move outward, thereby ensuring that the clamping block 207 and the clamping slot 202 on the connecting bar 201 of the circuit breaker 101 are always tightly engaged, achieving secondary reinforcement for the circuit breaker 101 and significantly improving the circuit breaker 101's resistance to vibration and deflection during operation. When the circuit breaker 101 is being maintained or disassembled, the rocker arm 303 is relaxed, and the gear 307 reverses, driving the screw 501 in reverse, thereby driving the U-shaped lifting block 502 downward. As the U-shaped lifting block 502 descends, its inclined surface disengages from the pulley 208, and the slider 204 is no longer subjected to the additional clamping force. The slider 204 and the clamping block 207 can now move freely and loosen.

Claims

1. A conveniently installed pole-mounted circuit breaker, characterized in that: The invention comprises a mounting frame (1), a circuit breaker (101), a positioning plate (102), a support plate (104), a buffer spring (105), a V-shaped groove block (106), a positioning rod (107) and a positioning assembly. The mounting frame (1) is fixedly mounted on a power pole of a power transmission and distribution network through a clamp assembly. The support plate (104) is horizontally mounted on the top of the mounting frame (1). The bottom of the positioning plate (102) is mounted on the top of the mounting frame (1) through a plurality of telescopic rods. The lower ends of the telescopic rods penetrate the mounting frame (1) and are fixedly connected to the support rods. On the support plate (104), a buffer spring (105) is sleeved on the outer side of the telescopic rod, and the upper and lower ends thereof are respectively connected to the bottom surface of the positioning plate (102) and the top surface of the support plate (104), and V-shaped groove blocks (106) are respectively 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), and the left and right sides of the circuit breaker (101) are correspondingly connected to positioning rods (107). The positioning rods (107) and the sliding groove in the middle of the V-shaped groove block (106) form a snap fit, and a positioning component is provided on the mounting frame (1).

2. The conveniently installed pole-mounted circuit breaker according to claim 1, characterized in that: A polytetrafluoroethylene friction-reducing coating is provided on the surface of the middle slide groove of the V-groove block (106).

3. The conveniently installed pole-mounted circuit breaker according to claim 1, characterized in that: The positioning assembly includes a connecting bar (201), a support frame (203), a slider (204), a buffer shaft (205), a reset spring (206), a block (207) and a pulley (208). The top middle of the mounting frame (1) is connected to the support frame (203). The front and rear sides of the support frame (203) are both slidably connected to the sliders (204). Three reset springs (206) are spaced apart and connected between the two sliders (204). The outer sides of the sliders (204) are both rotatably connected to the buffer shaft (205) for contacting the circuit breaker (10 1) The wall surface is in contact with each other, and two pulleys (208) are rotatably connected to the inner side of the slider (204). The pulleys (208) are slidably matched with the inner side of the support frame (203). Three clamping blocks (207) are connected to the outer side of the bottom of the slider (204) at intervals. The front and rear side walls of the lower side of the circuit breaker (101) are respectively connected to the connecting strips (201). The upper and lower wall surfaces of the connecting strip (201) are designed as an inclined structure, and a plurality of clamping grooves (202) are provided at intervals on the inner side. The clamping grooves (202) and the clamping blocks (207) form a clamping matching relationship.

4. The conveniently installed pole-mounted circuit breaker according to claim 1, characterized in that: The positioning plate (102) further includes rollers (103). Two groups of rollers (103) are respectively provided on both sides of the positioning plate (102), each group consisting of four rollers (103). The rollers (103) and the positioning plate (102) are connected in a rotating manner.

5. The conveniently installed pole-mounted circuit breaker according to claim 1, characterized in that: The mounting frame (1) further comprises a positioning assembly, wherein the positioning assembly comprises a positioning block (301), a roller (302), a rocker (303), a push block (304), a rack rod (305), a tension spring (306), a gear (307) and a limiting assembly. A guide slide is provided on both sides of the top of the mounting frame (1), and the positioning block (301) is slidably connected to the slide. The rollers (302) are rotatably connected to the walls on both sides of the positioning block (301). The center of the upper part of the mounting frame (1) is rotatably connected to the rocker (303). The left end of the rocker (303) is designed as an ergonomic handle structure, and the right end is connected to the mounting frame (1) through a limiting hook. The preset hanging point forms a limit, and the left end of the top of the rocker arm (303) is symmetrically connected to a push block (304), and the upper surface of the push block (304) is processed with a guide inclined surface, which cooperates with the outer guide surface of the positioning block (301). The inner sides of the two positioning blocks (301) are respectively connected to rack rods (305), and the middle of the top 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 in the back, and are both engaged with the gear (307). A tension spring (306) is connected between the two rack rods (305) and the support plate (104), and a limit assembly is provided on the mounting frame (1).

6. The conveniently installed pole-mounted circuit breaker according to claim 5, characterized in that: The limiting assembly includes a mounting block (401), a limiting block (402), a locking spring (403) and a protrusion (406). The mounting block (401) is installed on the left side of the upper portion of the mounting frame (1). The limiting block (402) is slidably connected to the mounting block (401). The inner side surface 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 surface of the limiting block (402) is symmetrically processed with a positioning arc (405) that fits the outer circular surface of the rocker arm (303) handle. The upper front and rear sides of the left end handle portion of the rocker arm (303) are both connected with the protrusion (406). The front and rear ends of the top of the limiting block (402) are respectively provided with notches (404). The protrusion (406) and the notch (404) form a locking fit relationship.

7. The conveniently installed pole-mounted circuit breaker according to claim 5, characterized in that: The reinforcing assembly further comprises a screw (501) and a U-shaped lifting block (502). The middle portion of the gear (307) is threadedly connected to the screw (501). 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) passes through the mounting frame (1) upward and extends to the interior of the support frame (203). The front and rear surfaces of the upper end are processed to form an inclined surface structure. The inclined surface forms a line contact fit relationship with the pulley (208) on the slider (204).

8. The conveniently installed pole-mounted circuit breaker according to claim 1, characterized in that: The housing of the circuit breaker (101) is made of high-strength flame-retardant engineering plastic, and the material is reinforced polycarbonate (PC).

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