Quick replacement device for circuit breaker

Abstract

The invention relates to a circuit breaker rapid replacement device which comprises a base, the base is fixedly installed in a power distribution cabinet, L-shaped fixing plates are symmetrically arranged on the two sides of the upper end face of the base along the longitudinal central axis and get close to or away from each other through an adjusting assembly, a plurality of positioning columns are arranged on the longitudinal central axis of the base, and the positioning columns are driven by electromagnetic coils to move up and down; a plurality of elastic buckles are arranged at the upper ends of the vertical supporting legs of the L-shaped fixing plates on the two sides, and the elastic buckles are driven by a driving assembly to rotate and clamped in clamping grooves in the side faces of the circuit breaker. A sliding rail is arranged at the lower end of a horizontal supporting leg of the L-shaped fixing plate, a plurality of positioning pins are elastically installed on the sliding rail, and the positioning pins are clamped into grooves in the bottom face of the circuit breaker. The distance between the L-shaped fixing plates can be adjusted through the adjusting assembly, the circuit breaker mounting device is suitable for mounting circuit breakers of multiple specifications, the elastic buckles and the electromagnetic positioning columns are arranged, tool-free quick dismounting and mounting are achieved, repeated use can be achieved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and in particular to a circuit breaker quick-replacement device. Background Art

[0002] Low-voltage circuit breakers are important electrical appliances that perform on-off control and protection functions in low-voltage power distribution systems. Today's low-voltage circuit breakers generally have intelligent protection functions, and this function is implemented by an important core component, the intelligent controller (hereinafter referred to as the controller). Since the electronic components in the controller are relatively easy to age, their lifespan is shorter than that of other components of the circuit breaker, and the controller often fails and needs to be replaced. In order to ensure safe use and improve the reliability of the circuit breaker, users often stipulate that the controller must be replaced after a certain number of years of use, and the only thing that needs to be replaced is the installed controller, and nothing else needs to be replaced. However, due to the structure of existing low-voltage circuit breakers, the circuit breaker mask presses down on the controller, resulting in the need to remove the circuit breaker mask first and then remove the controller when replacing the controller, which is time-consuming and labor-intensive. For example, the invention patent with publication number CN107946145A discloses an easy-to-install embedded low-voltage circuit breaker, comprising a housing, wherein the top and bottom of the inner wall of the housing are fixedly connected to a slide rail, a slider is slidably connected to the surface of the slide rail, the two sliders are fixedly connected by a movable plate, and the circuit breaker body is fixedly connected at the midpoint of the right side of the movable plate. The present invention comprises a slide rail, a slider, a movable plate, a groove block, a fixed block, a first rotating shaft, a rotating rod, a second rotating shaft, a connecting rod, a first spring fixing plate, a limit block, a limit telescopic rod, a limit rod, a shock-absorbing telescopic rod, a second spring fixing plate, a shock-absorbing spring, an anti-slip pad, an adjustment nut, an adjustment bolt, a slide rod, a movable block, a limit baffle, a limit plate, and a fixing rope, thereby facilitating the installation of the embedded low-voltage circuit breaker, reducing the workload of the operator and preventing damage to the circuit breaker caused by accidents during installation. However, this structure requires the fixing rope to be cut to complete installation due to the coordination between the fixing rope and the fixing spring, which is a one-time operation. If the installation is incorrect, the components must be replaced, increasing maintenance costs. Therefore, it is necessary to develop a circuit breaker quick replacement device to address the above defects. Summary of the Invention

[0003] The purpose of the present invention is to provide a circuit breaker quick replacement device. The distance between the L-shaped fixing plates can be adjusted by adjusting the components. The device is suitable for the installation of circuit breakers of various specifications. The device is equipped with elastic clips and electromagnetic positioning columns to achieve tool-free rapid disassembly and assembly, is reusable, and reduces maintenance costs.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a quick-changing device for a circuit breaker, comprising a base, which is fixedly installed in a power distribution cabinet; L-shaped fixing plates are symmetrically provided on both sides of an upper end surface of the base along a longitudinal central axis, and are moved closer or farther away from each other by an adjustment component; the adjustment component is fixedly installed on the base and located at a central position; a plurality of positioning columns are provided on the longitudinal central axis of the base, and the positioning columns are driven to move up and down by electromagnetic coils; elastic clips are provided at the upper ends of vertical legs of the L-shaped fixing plates on both sides, and a plurality of elastic clips are provided, and are driven to rotate and be clamped in a clamping groove on the side of the circuit breaker by a driving component; a slide rail is provided at the lower end of the horizontal leg of the L-shaped fixing plate, and a plurality of positioning pins are elastically installed on the slide rail, and the positioning pins are clamped in a groove on the bottom surface of the circuit breaker.

[0006] The worm gear is fixed on the upper end face of the base, and the worm gear is fixed on the lower end face of the base so as to rotate the worm gear and the worm gear is fixed on the lower end face of the base.

[0007] The cam is secured to the L-shaped base and has a pivotal portion for securing the cam to the base so that the cam can extend past the L-shaped base to allow the cam to slide relative to the base.

[0008] Preferably, the elastic clip includes a cylinder and a clip arm, two clip arms are provided, and are symmetrically mounted on the outer circumference of the cylinder, the angle between the two clip arms is 30°, the front end of the clip arm extends outward in a vertical direction to form a folded edge, the cylinder is sleeved on the outer circumference of the drive rod and fixedly connected to the drive rod, and the folded end of the clip arm is clamped on the side of the circuit breaker.

[0009] Preferably, a plurality of slots are provided on the side of the circuit breaker, and the slots are formed by welding symmetrically arranged L-shaped steel plates, and a clearance groove is opened on one side of the slot; the slots are used to be snap-fitted with the folded end of the elastic clip, and the clearance groove is used to avoid the rotation path of the elastic clip.

[0010] Preferably, the driving rod extends out of the vertical plate and is provided with a knob on the outer side close to the circuit breaker. The knob is fixedly connected to the driving rod, and the outer peripheral surface of the knob is provided with anti-slip grooves.

[0011] Preferably, the slide rail includes a track at the lower end and a slide plate cooperating with the track, the track is fixedly mounted on the horizontal support leg of the L-shaped fixed plate, a limit block is provided at one end of the track, the limit block is located away from the operating side of the circuit breaker, a micro switch is provided on the limit block, and the micro switch is electrically connected to the electromagnetic coil of the positioning column.

[0012] Preferably, a plurality of positioning holes are provided at the bottom end of the circuit breaker, and the positioning holes match the positioning posts. The slide plate abuts against the micro switch, triggering the positioning posts to extend into the positioning holes.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] The present invention provides a quick-change circuit breaker device. By adjusting the coordination of the gear, rack, worm gear, and worm in the assembly, the L-shaped fixing plates on either side can be easily driven closer or further apart. This facilitates quick adjustment of the spacing between the device and the circuit breaker, allowing for adaptability to circuit breakers of varying specifications. The adjustment process is labor-saving and highly synchronized. A positioning pin is provided on the slide rail, which engages with a groove on the bottom surface of the circuit breaker to achieve initial positioning of the circuit breaker. A positioning post on the longitudinal center axis of the base is driven up and down by an electromagnetic coil, cooperating with a positioning hole at the bottom of the circuit breaker. After the circuit breaker is pushed into place, the slide abuts against a microswitch, electrically connecting the microswitch to the electromagnetic coil of the positioning post, triggering the positioning post to extend into the positioning hole of the circuit breaker for precise positioning. A drive rod in the drive assembly drives the elastic clip to rotate and snap into a slot on the side of the circuit breaker, forming a stable multi-point positioning structure. This ensures that the circuit breaker will not wobble or shift during use, effectively improving the reliability and stability of the circuit breaker. The entire installation process eliminates the need for complex disassembly steps, increasing the efficiency of controller replacement and significantly saving replacement time and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the circuit breaker quick replacement device of the present invention (including the circuit breaker);

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the circuit breaker quick replacement device of the present invention (without the circuit breaker placed);

[0018] Figure 3 This is an exploded schematic diagram of the drive assembly of the present invention;

[0019] Figure 4 Schematic diagram of the assembly relationship between the elastic buckle and the slot of the present invention;

[0020] Figure 5 Schematic diagram of the structure of the adjustment component of the present invention.

[0021] Explanation of the accompanying drawings: 1. Base; 2. L-shaped fixing plate; 201. Vertical plate; 3. Adjustment assembly; 301. Gear; 302. Rack; 303. Worm; 4. Positioning column; 5. Elastic buckle; 501. Cylinder; 502. Buckle arm; 6. Driving assembly; 601. Driving rod; 602. Torsion spring seat; 603. Torsion spring; 604. Limiting groove; 605. Limiting column; 7. Slot; 8. Slide rail; 801. Track; 802. Slide plate; 9. Positioning pin; 10. L-shaped steel plate; 11. Knob; 12. Circuit breaker; 13. Limiting block. DETAILED DESCRIPTION

[0022] The core of the present invention is to provide a circuit breaker quick replacement device. The distance between the L-shaped fixing plates can be adjusted by adjusting the components. It is suitable for the installation of circuit breakers of various specifications. It is equipped with elastic clips and electromagnetic positioning columns to achieve tool-free rapid disassembly and reusability, reducing maintenance costs.

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0025] With reference to the accompanying drawings, Figure 1 This is a schematic diagram of the three-dimensional structure of the circuit breaker quick replacement device of the present invention (including the circuit breaker); Figure 2 This is a schematic diagram of the three-dimensional structure of the circuit breaker quick replacement device of the present invention (without the circuit breaker placed); Figure 3 This is an exploded schematic diagram of the drive assembly of the present invention; Figure 4 Schematic diagram of the assembly relationship between the elastic buckle and the slot of the present invention; Figure 5 Schematic diagram of the structure of the adjustment component of the present invention.

[0026] In one embodiment, Figures 1 to 5 As shown, a circuit breaker quick replacement device includes a base 1, which is fixedly installed in the distribution cabinet and serves as the basic support structure of the entire device. L-shaped fixing plates 2 are symmetrically provided on both sides of the upper end surface of the base 1 along the longitudinal center axis, and are moved closer to or away from each other through an adjustment component 3. The adjustment component 3 is fixedly installed on the base 1 and is located in the center. A number of positioning columns 4 are provided on the longitudinal center axis of the base 1, and the positioning columns 4 are driven to move up and down by electromagnetic coils. Elastic clips 5 are provided at the upper ends of the vertical legs of the L-shaped fixing plates 2 on both sides. There are several elastic clips 5, and they are driven to rotate and clamped in the slots 7 on the side of the circuit breaker 12 by the driving component 6. A slide rail 8 is provided at the lower end of the horizontal leg of the L-shaped fixing plate 2, and a number of positioning pins 9 are elastically installed on the slide rail 8. The positioning pins 9 are clamped into the grooves on the bottom surface of the circuit breaker.

[0027] In one embodiment, Figures 1 to 5As shown, the adjustment assembly 3 is used to drive the relative movement of the two L-shaped fixing plates 2. It includes a gear 301 and a rack 302 that mesh with each other, as well as a worm 303 and a worm wheel 304 for driving the gear 301 to rotate. A T-shaped slot is provided on the upper end surface of the base 1, and the L-shaped fixing plate 2 is slidably mounted in the T-shaped slot via a T-shaped step at the lower end. A rack 302 is mounted on the side of the horizontal leg of the L-shaped fixing plate 2. The gear 301 is mounted in the T-shaped slot of the base 1 via a rotating shaft. The gear 301 is located between the two racks 302. The upper portion of the gear 301 meshes with the two racks 302, and the lower portion of the gear 301 meshes with the worm 303. The worm 303 is longitudinally mounted on the base 1 and is arranged perpendicular to the rack 302. The worm 303 drives the gear 301 to rotate, thereby driving the two racks 302 to move laterally, causing the two L-shaped fixing plates 2 to move closer or farther apart. Depending on the circuit breaker specifications, manually turning the worm 303 drives the gear 301, which simultaneously engages with the racks 302 on either side, converting the longitudinal rotation of the worm 303 into lateral linear motion of the racks 302. This, in turn, drives the L-shaped fixing plate 2 along the T-shaped slot, achieving spacing adjustment. Adjusting the spacing of the L-shaped fixing plates allows for compatibility with circuit breakers of varying widths, improving the device's versatility. The worm 303 also features a torque-increasing transmission mechanism that reduces speed and increases torque. Turning the worm 303 easily moves the L-shaped fixing plates, reducing operational complexity.

[0028] In one embodiment, Figures 1 to 5 As shown, the drive assembly 6 includes a drive rod 601. Drive rod 601 is longitudinally mounted on the upper end of the L-shaped fixed plate 2. Vertical plates 201 are vertically mounted on either side of the upper end of the L-shaped fixed plate 2. Vertical plates 201 and L-shaped fixed plate 2 form an integral structure. A torsion spring seat 602 is horizontally mounted on the inner sidewall of the vertical plate 201. The torsion spring seat 602 is rotatably mounted to the vertical plate 201. A torsion spring 603 is sleeved within the torsion spring seat 602. One end of the torsion spring 603 is clamped to the torsion spring seat 602, and the other end is clamped to the side of the vertical plate 201. Both ends of the driving rod 601 pass through the torsion spring seat 602 and are rotatably mounted on the vertical plate 201. A groove is provided on the driving rod 601, and a protrusion matching the groove is provided on the torsion spring seat 602. The driving rod 601 drives the torsion spring seat 602 to rotate, and the driving rod 601 slides along the axial direction of the driving rod 601 on the torsion spring seat 602 and the vertical plate 201; a limiting groove 604 is provided on the outer side of the driving rod 601 near the circuit breaker 12, and a limiting column 605 is installed on the upper end of the limiting groove 604. The limiting column 605 is vertically mounted in the vertical plate 201, and the lower end of the limiting column 605 extends into the limiting groove 604.

[0029] Rotating the knob 11 drives the drive rod 601 to rotate, and the elastic clip 5 mounted on the drive rod 601 rotates accordingly. The drive rod 601 is provided with a limit groove 604, and a limit post 605 is mounted on the upper end of the limit groove 604. When the limit groove 604 and the limit post 605 cooperate, the drive rod 601 rotates 90 degrees, so that the snap arm 502 of the elastic clip 5 is vertically arranged and parallel to the slot 7 on the side of the circuit breaker 12. Pressing the drive rod 601 inward, the drive rod 601 moves axially, causing the snap arm 502 of the elastic clip 5 to extend into the slot 7 on the side of the circuit breaker 12, locking it. The drive rod 601 then engages with the protrusion of the torsion spring seat 602 through the groove, driving the torsion spring seat 602 to rotate. During disassembly, the knob 11 is pulled outward, causing the snap arm 502 of the elastic snap 5 to fall out of the slot 7. Under the action of the torsion spring 603, the drive rod 601 automatically rotates 90°, causing the snap arm 502 of the elastic snap 5 to completely fall off the circuit breaker 12. The torsion spring 603 is provided to prevent the snap arm 502 of the elastic snap 5 from contacting the side of the circuit breaker 12 after it is separated from the slot 7, making it inconvenient to remove the circuit breaker 12. The elastic snap 5 is also installed and released by rotating the knob 11, eliminating the need for tools such as screwdrivers, thereby improving assembly and disassembly efficiency. The folded edge of the snap arm 502 cooperates with the slot 7 to form a mechanical lock, preventing lateral displacement of the circuit breaker and ensuring operational stability.

[0030] In one embodiment, Figures 1 to 5 As shown, the elastic clip 5 includes a cylinder 501 and a clip arm 502. Two clip arms 502 are provided and symmetrically mounted on the outer circumference of the cylinder 501, with the angle between the two clip arms 502 being 30°. The front end of the clip arm 502 extends outward in a vertical direction with a folded edge. The cylinder 501 is sleeved on the outer circumference of the drive rod 601 and is fixedly connected to the drive rod 601. The folded end of the clip arm 502 is clamped into the slot 7 on the side of the circuit breaker 12. The clip arms 502 are arranged at a 30° angle. After the clip arm 502 is installed in the slot 7, the pressure from both sides of the circuit breaker 12 is evenly distributed and not easily deformed, thereby enhancing the stability of the installation. The width of the slot 7 is set to 12 mm, and the width of the folded end of the clip arm 502 is set to 10 mm. After insertion, a 2 mm margin is reserved to compensate for assembly errors.

[0031] In one embodiment, Figures 1 to 5As shown, a number of L-shaped steel plates 10 are provided on the side mounting plate of the circuit breaker 12. The L-shaped steel plates 10 are symmetrically arranged in pairs, and the L-shaped steel plates 10 and the mounting plate are welded to form an integral structure. The horizontal edges of the L-shaped steel plates are vertically welded to the mounting plate, and the vertical edges extend to the outside of the circuit breaker 12 to form an open-shaped slot 7. The folded edge of the elastic clip 5 extends into the relative slot 7. A clearance groove is provided on one side of each slot 7. The clearance groove is arranged near the operating side of the circuit breaker 12, and the clearance groove is located in the space where the corresponding elastic clip 5 rotates. The clearance groove is used to avoid the rotation space of the elastic clip. It prevents the clip arm 502 from being squeezed and deformed by the side of the circuit breaker 12 during rotation, making it difficult to insert into the slot 7.

[0032] Slot 7 is located on the side mounting plate of the circuit breaker. Adding this structure to the mounting plate during the design and production process optimizes the circuit breaker's structure, reducing installation difficulty and cost. The combination of slot 7 and elastic clip 5 forms a multi-point positioning structure that resists vibration from the power distribution system and ensures a displacement of 0.3mm or less during operation. Furthermore, the addition of the slot structure allows the slot 7 and elastic clip 5 to be attached together simply by rotating a knob 11, eliminating the need for tools such as screwdrivers. This reduces assembly and disassembly time by over 70% compared to traditional structures.

[0033] In one embodiment, Figures 1 to 5 As shown, the drive rod 601 extends out of the vertical plate 201 and is provided with a knob 11 on the outside near the circuit breaker 12. The knob 11 is fixedly connected to the drive rod 601, and the outer circumference of the knob 11 is provided with anti-slip grooves. The knob 11 is used to easily rotate the drive rod 601 and is easy to operate.

[0034] In one embodiment, Figures 1 to 5 As shown, the slide rail 8 includes a track 801 at the lower end and a slide plate 802 that cooperates with the track 801. The track 801 is fixedly mounted on the horizontal support leg of the L-shaped fixed plate 2. A limit block 13 is provided at one end of the track 801. The limit block 13 is located away from the operating side of the circuit breaker 12. The limit block 13 is provided with a micro switch, which is electrically connected to the magnetic coil of the positioning column 4. The circuit breaker 12 is placed on the slide plate 802. By fine-tuning the circuit breaker 12, the positioning pin 9 installed on the slide plate 802 is snapped into the groove at the bottom of the circuit breaker 12, thereby preliminarily positioning the circuit breaker 12. The circuit breaker 12 is pushed so that it enters the base 1 along with the slide rail 8. When the front end of the slide plate 802 abuts the limit block 13, the micro switch is triggered, energizing the electromagnetic coil of the positioning column 4 connected to the charging sensor, starting the positioning column 4 to extend and insert into the circuit breaker positioning hole. The positioning column 4 extends to complete the precise positioning. When the circuit breaker is pushed into place, the slide plate 802 triggers the micro switch, the electromagnetic coil is energized, and the positioning column 4 is extended and locked. When disassembling, the electromagnetic coil is de-energized, the positioning column 4 is retracted, and the lock is released.

[0035] In one embodiment, Figures 1 to 5 As shown, a plurality of positioning holes are provided at the bottom end of the circuit breaker, and the positioning holes match the positioning posts 4 . The slide plate 802 abuts against the micro switch, triggering the positioning posts 4 to extend into the positioning holes.

[0036] The working process of a quick replacement device for a circuit breaker of the present invention is as follows: the base 1 is fixedly installed in a suitable position in the power distribution cabinet by bolts. According to the specifications of the circuit breaker to be installed, the worm 303 is rotated, and the transmission is carried out through the gear 301 and the rack 302 to adjust the spacing between the L-shaped fixing plates on both sides so that it adapts to the width of the circuit breaker. The circuit breaker is placed between the L-shaped fixing plates on both sides, and the circuit breaker 12 is slowly pushed along the slide rail 8 to move toward the limit block 13. The positioning pin 9 is automatically snapped into the bottom groove under the action of the compression spring to achieve preliminary horizontal positioning. Continue to push the circuit breaker 12 until the slide 802 abuts the microswitch on the limit block 13. The microswitch triggers the electromagnetic coil to energize. The positioning column 4 extends upward under the action of the electromagnetic force and is accurately inserted into the positioning hole at the bottom end of the circuit breaker. After the positioning column 4 is inserted, the electromagnetic coil remains energized to form a magnetic lock to ensure that there is no displacement in the horizontal direction of the circuit breaker. Once the circuit breaker 12 is properly installed in the front-to-back direction, the knob 11 on the outside of the drive rod 601 is rotated. The drive rod 601 drives the cylinder 501 to rotate. When the knob 11 rotates 90° clockwise, the snap arm 502 rotates through the clearance groove on the side of the slot 7, rotating its folded end to a vertical position. The button is pressed inward, causing the folded end of the snap arm 502 to extend into the slot 7 formed by the L-shaped steel plate on the side of the circuit breaker. During operation, the multi-point positioning structure ensures the stable operation of the circuit breaker. When the power distribution system vibrates, the elastic snap 5 always adheres to the inner wall of the slot 7. The electromagnetic attraction of the positioning column 4 resists horizontal vibration, ensuring that the displacement of the circuit breaker during operation is ≤0.3mm. When the circuit breaker 12 needs to be replaced, the knob 11 is pulled outward, disengaging the elastic clip 5 from the slot 7. Under the action of the torsion spring 603, the limiting post 605 slides within the limiting slot 604 of the drive rod 601, causing the drive rod 601 to rotate 90°. The folded edge of the clip arm 502 turns horizontal and disengages the circuit breaker 12. Simultaneously, the electromagnetic coil is de-energized, and the positioning post 4 retracts under its own weight. Pulling the circuit breaker 12 outward causes the slide 802 to move outward along the track 801. Once the circuit breaker 12 is out of the distribution cabinet, the circuit breaker 12 is removed to complete disassembly.

[0037] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0038] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A circuit breaker quick replacement device, characterized by: The utility model comprises a base (1), wherein the base (1) is fixedly installed in the power distribution cabinet, and L-shaped fixing plates (2) are symmetrically provided on both sides of the upper end surface of the base (1) along the longitudinal center axis, and are moved closer to or farther away from each other through an adjustment component (3), and the adjustment component (3) is fixedly installed on the base (1) and is located at a central position, and a plurality of positioning columns (4) are provided on the longitudinal center axis of the base (1), and the positioning columns (4) are driven to move up and down by electromagnetic coils; elastic clips (5) are provided at the upper ends of the vertical legs of the L-shaped fixing plates (2) on both sides, and the elastic clips (5) are provided in plurality and are driven to rotate and be clamped in the clamping groove (7) on the side of the circuit breaker (12) by a driving component (6); a slide rail (8) is provided at the lower end of the horizontal leg of the L-shaped fixing plate (2), and a plurality of positioning pins (9) are elastically installed on the slide rail (8), and the positioning pins (9) are clamped in the groove on the bottom surface of the circuit breaker.

2. A circuit breaker quick replacement device according to claim 1, characterized in that: The adjusting assembly (3) includes a gear (301) and a rack (302) that mesh with each other, and a worm (303) and a worm wheel (304) for driving the gear (301) to rotate. A T-shaped slot is provided at the upper end surface of the base (1). The L-shaped fixing plate (2) is slidably installed in the T-shaped slot via a T-shaped step at the lower end. The rack (302) is installed on the side of the horizontal support leg of the L-shaped fixing plate (2). The gear (301) is installed in the T-shaped slot of the base (1) via a rotating shaft, and the gear (301) is located between the racks (302) on both sides. The gear (301) and the racks (302) on both sides are connected. ) are engaged, a worm wheel (304) is provided at the lower end of the gear (301), the worm wheel (304) is arranged parallel to the gear (301), the worm wheel (304) is fixedly mounted on the rotating shaft, one side of the worm wheel (304) is engaged with the worm (303), the worm (303) is longitudinally mounted on the base (1) and is arranged perpendicular to the rack (302), the worm (303) drives the worm wheel (304) to rotate, so that the gear (301) mounted on the rotating shaft rotates, thereby driving the racks (302) on both sides to move laterally, and the L-shaped fixing plates (2) mounted on the racks (302) are relatively close to or away from each other.

3. The circuit breaker quick replacement device according to claim 2, characterized in that: The driving assembly (6) includes a driving rod (601), the driving rod (601) is longitudinally mounted on the upper end of the L-shaped fixing plate (2), vertical plates (201) are vertically provided on both sides of the upper end of the L-shaped fixing plate (2), the vertical plates (201) and the L-shaped fixing plate (2) are an integrated structure, a torsion spring seat (602) is horizontally mounted on the inner side wall of the vertical plate (201), the torsion spring seat (602) and the vertical plate (201) are rotatably mounted, the torsion spring (603) is sleeved on the driving rod (601), one end of the torsion spring seat (602) is clamped on the torsion spring seat (602), and the other end of the torsion spring is clamped on the side of the vertical plate (201), and both ends of the driving rod (601) pass through the torsion spring seat (602) and is rotatably mounted on the vertical plate (201); a groove is provided on the driving rod (601); a protrusion matching the groove is provided on the torsion spring seat (602); the driving rod (601) drives the torsion spring seat (602) to rotate, and the driving rod (601) slides in the torsion spring seat (602) along the direction of the groove; a limiting groove (604) is provided on the outer side of the driving rod (601) close to the circuit breaker (12); a limiting column (605) is installed at the upper end of the limiting groove (604); the limiting column (605) is vertically mounted in the vertical plate (201), and the lower end of the limiting column (605) extends into the limiting groove (604).

4. A circuit breaker quick replacement device according to claim 3, characterized in that: The elastic clip (5) comprises a cylinder (501) and a clip arm (502). Two clip arms (502) are provided and symmetrically mounted on the outer circumference of the cylinder (501). The angle between the two clip arms (502) is 30°. The front ends of the clip arms (502) extend outwardly in a vertical direction to form a folded edge. The cylinder (501) is sleeved on the outer circumference of the drive rod (601) and is fixedly connected to the drive rod (601). The folded edge ends of the clip arms (502) are clamped on the side of the circuit breaker (12).

5. The circuit breaker quick replacement device according to claim 4, characterized in that: The side of the circuit breaker (12) is provided with a plurality of slots (7), the slots (7) being formed by welding symmetrically arranged L-shaped steel plates (10), and a clearance groove being provided on one side of the slots (7); the slots (7) are used for clamping and fitting with the folded edge ends of the elastic clips (5), and the clearance groove is used for avoiding the rotation path of the elastic clips (5).

6. The circuit breaker quick replacement device according to claim 3, characterized in that: The driving rod (601) extends out of the vertical plate (201) and is provided with a knob (11) on the outside close to the circuit breaker (12). The knob (11) is fixedly connected to the driving rod (601), and the outer peripheral surface of the knob (11) is provided with anti-slip grooves.

7. The circuit breaker quick replacement device according to claim 1, characterized in that: The slide rail (8) comprises a track (801) at the lower end and a slide plate (802) matched with the track (801); the track (801) is fixedly mounted on the horizontal support leg of the L-shaped fixed plate (2); a limit block (13) is provided at one end of the track (801); the limit block (13) is located away from the operating side of the circuit breaker (12); a micro switch is provided on the limit block (13); and the micro switch is electrically connected to the electromagnetic coil of the positioning column (4).

8. The circuit breaker quick replacement device according to claim 7, characterized in that: The bottom end of the circuit breaker is provided with a plurality of positioning holes, the positioning holes matching the positioning posts (4), and the slide plate (802) abuts against the micro switch, triggering the positioning posts (4) to extend into the positioning holes.

Images