A plug-in type pole-mounted circuit breaker

Abstract

The application discloses a plug-in type pole circuit breaker and belongs to the technical field of circuit breakers. The pole circuit breaker comprises a base installed on a wire pole rack, a pole circuit breaker body is installed on the base, a mounting unit is assembled to the middle part of the base by being provided with a mounting groove, the mounting unit comprises a supporting plate for placing the pole circuit breaker body and slidingly mounted in the mounting groove, and a first screw rod is installed on the lower surface of the supporting plate. The mounting unit and the transverse positioning assembly are arranged, the dismounting efficiency is improved, the operation process is greatly simplified, the traditional screw nut screwing fixing mode is abandoned, the linkage cooperation of the first screw rod, the first rotating pair, the vertical positioning assembly and the transverse positioning assembly is achieved, the pole circuit breaker body can be lifted, multidirectionally positioned and unlocked by only rotating the worm, the bolts need not to be operated one by one, and the time for installing and subsequently dismounting and overhauling the pole circuit breaker body is obviously saved.

Description

Technical Field

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

[0002] Pole-mounted circuit breakers are important switching devices in power distribution networks. They are widely installed on utility poles and platforms, and play a key role in controlling the on / off state of lines and providing fault protection. The ease and stability of their installation directly affect the construction efficiency of the power distribution network, the safety of equipment operation, and the convenience of subsequent inspection and maintenance.

[0003] In existing technologies, pole-mounted circuit breakers are mostly installed by tightening multiple bolts and nuts onto a base, directly fixing the circuit breaker body to the mounting base of the utility pole. While this fixing method can achieve basic positioning, it has many drawbacks in actual construction and use: First, installation and disassembly are cumbersome, requiring workers to tighten multiple bolts and nuts one by one. Due to limited outdoor working space and tools, disassembly and assembly are time-consuming, significantly reducing construction and maintenance efficiency. Second, traditional fixing methods are mostly single-plane horizontal compression or simple vertical overlap, lacking a multi-directional limiting structure for the circuit breaker body. After installation, it is prone to tilting, vertical movement, or lateral displacement due to outdoor wind, line vibration, and equipment weight, affecting the wiring accuracy and operational stability of the circuit breaker, and may even cause problems such as poor line contact and equipment failure. Summary of the Invention

[0004] The purpose of this invention is to provide a plug-in pole-mounted circuit breaker to solve the problem of cumbersome installation and disassembly operations of pole-mounted circuit breakers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A plug-in pole-mounted circuit breaker includes a base mounted on a utility pole frame, a pole-mounted circuit breaker body mounted on the base, and an installation unit assembled in the middle of the base through an installation groove. The installation unit includes a receiving plate for placing the pole-mounted circuit breaker body, which is slidably mounted in the installation groove, and a first screw is mounted on the lower surface of the receiving plate.

[0007] The first screw moves downward via a first rotating joint mounted on the lower surface of the base, and controls the receiving plate together with the pole-mounted circuit breaker body placed on its surface to move into the base;

[0008] A base plate is fixed on the inner bottom wall of the mounting groove. A vertical positioning component is assembled at the end of the base plate by opening a limiting groove. The vertical positioning component includes two movable parts installed in the limiting groove. A positioning plate is inserted into the movable parts by opening two through grooves. Positioning grooves corresponding to the positioning plates are opened on both sides of the lower surface of the pole-mounted circuit breaker body.

[0009] The positioning plate is pushed into the positioning groove when the moving part moves downward via the second main wedge block installed on one side wall of the through groove.

[0010] As a further description of the above technical solution:

[0011] A second auxiliary wedge block corresponding to the second main wedge block is fixed on one side of the positioning plate, and a second spring connected to the inner wall of the limiting groove is installed on the other side of the positioning plate. A second screw is installed on the lower surface of the moving part, and a second rotating pair corresponding to the second screw is assembled on both sides of the lower surface of the base.

[0012] As a further description of the above technical solution:

[0013] The second rotating pair includes a second turbine rotatably connected to the lower surface of the base via a second main bearing seat. One end of the second screw, which passes through the base, is threadedly connected to the middle of the second turbine. A second worm gear is rotatably connected to the side of the lower surface of the base near the second turbine via a second auxiliary bearing seat. One end of each of the two second worm gears is fixed with a pulley, and a synchronous belt is meshed on both pulleys.

[0014] As a further description of the above technical solution:

[0015] The first rotating pair includes a first turbine rotatably connected to the bottom of the base via a first main bearing, and a first screw threaded through one end of the base to the middle of the first turbine. A first worm gear is rotatably connected to the lower surface of the base near the first turbine via a first secondary bearing seat.

[0016] As a further description of the above technical solution:

[0017] Both sides of the mounting groove are fitted with horizontal positioning components by opening vertical grooves. The horizontal positioning components include side clamps that are slidably installed in the vertical grooves. A double inclined wedge is slidably installed on the bottom wall of the mounting groove near the side clamp. Both ends of the receiving plate are fixed with a first main wedge corresponding to one end of the double inclined wedge. An inclined groove corresponding to the other end of the double inclined wedge is opened at the bottom of one side of the side clamp.

[0018] As a further description of the above technical solution:

[0019] The side clamp is fitted with a positioning post through a guide groove. The bottom of both sides of the circuit breaker body on the post is provided with positioning holes that are adapted to the positioning post. The outer surface of each of the four positioning posts is fitted with a fourth spring with one end connected to a side wall of the guide groove. The inner sides of the four positioning posts are fixed with a linkage plate, and a fourth wedge block is fixed on the linkage plate.

[0020] As a further description of the above technical solution:

[0021] A horizontal groove is provided in the middle of both sides of the mounting groove. A vertical plate is slidably installed in the horizontal groove. A fourth main wedge block corresponding to the fourth auxiliary wedge block is fixed on the top of one side of the vertical plate. A third spring connected to the inner wall of the horizontal groove is installed on the top of the other side of the vertical plate.

[0022] As a further description of the above technical solution:

[0023] A third auxiliary wedge is installed on the other side of the vertical plate, and two third main wedges are installed on one side of the moving part, which are inserted into the horizontal groove.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] By setting up the installation unit and the horizontal positioning component, the efficiency of disassembly and assembly is improved, the operation process is greatly simplified, and the traditional method of fixing with multiple bolts and nuts is abandoned. Through the linkage of the first screw, the first rotating joint, the vertical positioning component and the horizontal positioning component, the pole-mounted circuit breaker body can be raised, lowered, positioned in multiple directions and unlocked by simply rotating the worm gear. There is no need to operate each bolt one by one, which significantly saves the time of installing the pole-mounted circuit breaker body and subsequent disassembly and maintenance. It is suitable for outdoor high-altitude operation scenarios with limited space and limited tools.

[0026] The vertical positioning component and the horizontal positioning component work together. Vertically, the positioning plate is inserted into the positioning groove of the pole-mounted circuit breaker body to restrict its vertical movement. Horizontally, the side clamps hold the pole-mounted circuit breaker body and the positioning column is inserted into the positioning hole to prevent it from tilting and shifting laterally. With the support plate's support and limit, the pole-mounted circuit breaker body is fixed in all directions, avoiding equipment displacement, poor wiring, and other faults caused by outdoor wind, line vibration, and other factors.

[0027] Meanwhile, the positioning components and lifting components are designed in a coordinated manner. During the descent of the receiving plate, the first main wedge block drives the double inclined wedge block and the side clamp to complete the lateral clamping simultaneously. During the descent of the moving parts, the positioning plate is driven to insert into the positioning slot and the positioning column is inserted into the positioning hole simultaneously. There is no need to operate each positioning structure separately, realizing "one-click lifting and synchronous positioning" and reducing the difficulty of operation for operators. Attached Figure Description

[0028] Figure 1 A cross-sectional structural schematic diagram of the base portion provided according to an embodiment of the present invention is shown;

[0029] Figure 2 The present invention provides an embodiment of the invention. Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 A schematic diagram of the overall structure provided according to an embodiment of the present invention is shown from a first perspective;

[0031] Figure 4 A schematic diagram of the installation position of the side clamp provided according to an embodiment of the present invention is shown;

[0032] Figure 5 A schematic diagram of the side clamp seat after it has been moved upward according to an embodiment of the present invention is shown;

[0033] Figure 6 A schematic diagram of the internal structure of the side clamp provided according to an embodiment of the present invention is shown;

[0034] Figure 7 The present invention provides an embodiment of the invention. Figure 4 Enlarged view of point B in the middle;

[0035] Figure 8 The present invention provides an embodiment of the invention. Figure 4 Enlarged view of point C in the middle;

[0036] Figure 9 A schematic diagram of the planar structure of a movable component provided according to an embodiment of the present invention is shown;

[0037] Figure 10 A schematic diagram of the positioning plate provided according to an embodiment of the present invention is shown;

[0038] Figure 11 This diagram illustrates the position of the positioning plate inserted into the positioning groove according to an embodiment of the present invention.

[0039] Figure 12 This diagram illustrates the position of the positioning plate within the mounting groove according to an embodiment of the present invention.

[0040] Figure 13 A second-view schematic diagram of the overall structure provided according to an embodiment of the present invention is shown;

[0041] Figure 14 A schematic diagram of the installation state of the pole-mounted circuit breaker body provided according to an embodiment of the present invention is shown.

[0042] Legend:

[0043] 10. Base; 11. Pole-mounted circuit breaker body;

[0044] 20. Mounting unit; 21. Receiving plate; 22. Base plate; 23. First screw; 24. First rotating pair; 241. First turbine; 242. First worm gear; 25. Vertical positioning assembly; 251. Moving part; 252. Positioning plate; 253. Positioning groove; 254. Second main wedge; 255. Second auxiliary wedge; 256. Second spring; 257. Second screw; 26. Second rotating pair; 261. Second turbine; 262. Second worm gear;

[0045] 30. Lateral positioning component; 31. Side clamp; 32. Double inclined wedge block; 33. First main wedge block; 34. Inclined groove; 35. Positioning post; 36. Linkage plate; 37. Fourth auxiliary wedge block; 38. Vertical plate; 39. Fourth main wedge block; 310. Third auxiliary wedge block; 311. Third main wedge block. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0047] like Figure 1 - Figure 14 As shown, the present invention provides:

[0048] A plug-in pole-mounted circuit breaker includes a base 10 installed on a utility pole frame, a pole-mounted circuit breaker body 11 installed on the base 10, and an installation unit 20 assembled in the middle of the base 10 through an installation groove. The installation unit 20 includes a receiving plate 21 for placing the pole-mounted circuit breaker body 11, which is slidably installed in the installation groove. A first screw 23 is installed on the lower surface of the receiving plate 21.

[0049] The first screw 23 moves downward via the first rotating joint 24 mounted on the lower surface of the base 10, and controls the receiving plate 21 together with the pole-mounted circuit breaker body 11 placed on its surface to move into the base 10.

[0050] The first rotating pair 24 includes a first turbine 241 rotatably connected to the bottom of the base 10 via a first main bearing. One end of the first screw 23, which passes through the base 10, is threadedly connected to the middle of the first turbine 241. In particular, the middle of the first turbine 241 is provided with a first threaded groove corresponding to the first screw 23. The first screw 23 is threadedly connected to the first threaded groove. The side of the lower surface of the base 10 near the first turbine 241 is rotatably connected to the first worm gear 242 via a first secondary bearing seat. In particular, in the initial state, the upper surface of the receiving plate 21 is at the same level as the upper surface of the base 10, and its lower surface is far away from the upper surface of the bottom plate 22.

[0051] Specifically, after the pole-mounted circuit breaker body 11 is placed on the surface of the receiving plate 21, the first worm gear 242 is rotated to drive the first turbine 241 to rotate, so that the first screw 23 can drive the receiving plate 21 to move downward until the lower surface is in contact with the upper surface of the base plate 22. At this time, the bottom of the pole-mounted circuit breaker body 11 is inside the base 10, so that the pole-mounted circuit breaker body 11 is initially defined.

[0052] like Figure 6 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, a base plate 22 is fixed on the inner bottom wall of the mounting groove. A vertical positioning component 25 is assembled at the end of the base plate 22 through a limiting groove. The vertical positioning component 25 includes two movable parts 251 installed in the limiting groove. A positioning plate 252 is inserted into the movable part 251 through two through grooves. In particular, the bottom end of the positioning plate 252 is slidably assembled on the inner bottom wall of the mounting groove. In this state, the positioning plate 252 can only move laterally in the through groove. Positioning grooves 253 corresponding to the positioning plate 252 are opened on both sides of the lower surface of the pole-mounted circuit breaker body 11. The positioning plate 252 is pushed into the positioning groove 253 when the movable part 251 moves downward by the second main wedge block 254 installed on one side wall of the through groove.

[0053] A second auxiliary wedge 255 corresponding to the second main wedge 254 is fixed on one side of the positioning plate 252, and a second spring 256 connected to the inner wall of the limiting groove is installed on the other side of the positioning plate 252. In particular, the second spring 256 is used to gradually reset the plate after the push on the positioning plate 252 is released. A second screw 257 is installed on the lower surface of the moving part 251.

[0054] Both sides of the lower surface of the base 10 are equipped with second rotating pairs 26 corresponding to the second screw 257. Each second rotating pair 26 includes a second turbine 261 rotatably connected to the lower surface of the base 10 via a second main bearing seat. One end of the second screw 257, passing through the base 10, is threaded to the middle of the second turbine 261. A semi-circular groove corresponding to the second screw 257 is provided on one side of the second auxiliary wedge 255. With this semi-circular groove, when the two second auxiliary wedges 255 approach each other, they will not be obstructed because the second screw 257 is in the middle position. Figure 10 As shown, specifically, the second turbine 261 has a second threaded groove in the middle corresponding to the second screw 257. The second screw 257 is threaded into the second threaded groove. The lower surface of the base 10 near the second turbine 261 is rotatably connected to the second worm 262 through the second secondary bearing seat. The second worm 262 meshes with the second turbine 261. One end of each of the two second worms 262 is fixed with a pulley, and the two pulleys are meshed with a synchronous belt. Preferably, one end of each of the first worm 242 and the second worm 262 is fixed with a disc for easy rotation of the worm. At the same time, the surface of the disc has multiple threaded holes arranged in a ring array, and three bolts corresponding to the three discs are threaded through the outer wall of the frame. When the worm stops rotating, although the worm and worm wheel have a self-locking property, by screwing the bolts into the corresponding threaded holes, the position of the disc can be fixed, thereby further restricting the position of the worm and preventing the self-locking from loosening.

[0055] In the initial state, the upper surface of the moving part 251 is on the same plane as the upper surface of the base plate 22, and its lower surface is far away from the inner bottom wall of the base 10. At the same time, the two positioning plates 252 are close to each other. In this state, the second spring 256 is in normal state, and the positioning plate 252 is in an inverted L shape.

[0056] Specifically, when the pole-mounted circuit breaker body 11 moves downward along with the receiving plate 21 and its bottom moves into the base 10, the upper surface of the positioning plate 252 contacts the top wall of the positioning groove 253. By rotating one of the second worm gears 262, in conjunction with the pulley and the synchronous belt, the other second worm gear 262 also rotates, thereby driving the two second worm wheels 261 to rotate together. Since the second screw 257 and the second worm wheel 261 are connected by a thread, the rotating second worm wheel 261 will drive the second screw 257 to move the moving part 251 downward. During the downward movement of the moving part 251, the second main wedge 254 will squeeze the second auxiliary wedge 255, causing the second auxiliary wedge 255 to drive the positioning plate 252 to move outward (the two positioning plates 252 will move outward simultaneously and move away from each other, during which the second spring 256 will be gradually compressed by force), so that its end is inserted into the positioning groove 253 (that is, the top extension of the positioning plate 252 is inserted into the cavity of the positioning groove 253 corresponding to the extension), thereby fixing the pole-mounted circuit breaker body 11 in the vertical direction. In this state, it cannot move up or down.

[0057] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, both sides of the mounting groove are fitted with horizontal positioning components 30 via vertical slots. Each horizontal positioning component 30 includes a side clamp 31 slidably mounted within the vertical slot. A double-inclined wedge 32 is slidably mounted on the bottom wall of the mounting groove near the side clamp 31. Preferably, both sides of the double-inclined wedge 32 are fitted with first springs via connecting blocks, and one end of each first spring is connected to the bottom plate 22. The first springs are used to reset the double-inclined wedge 32 after the external force is released. Both ends of the receiving plate 21 are fixed with the double-inclined wedges... The first main wedge 33 corresponds to one end of the face wedge 32. The bottom of one side of the side clamp 31 is provided with an inclined groove 34 corresponding to the other end of the double inclined wedge 32. In particular, the vertical groove and the mounting groove are in a connected state, and the bottom walls of the two grooves are on the same plane. In the initial state, the bottom of the side clamp 31 is in contact with the bottom wall of the vertical groove, and the double inclined wedge 32 is in a state where one end is only in contact with the inclined groove 34. This state does not generate a resisting force on the side clamp 31, and the first main wedge 33 is above the double inclined wedge 32.

[0058] Specifically, as the receiving plate 21 moves downward, the first main wedge block 33 moves downward synchronously. During this process, under the action of its inclined end, the double inclined wedge block 32 is driven to move towards the side clamping seat 31 (during this process, the first spring is gradually stretched). During this process, under the action of its other inclined end and the inclined groove 34, the side clamping seat 31 is driven to move upward to clamp the pole-mounted circuit breaker body 11 and prevent the pole-mounted circuit breaker body 11 from tilting.

[0059] like Figure 6 , Figure 7 and Figure 8 As shown, a positioning post 35 is inserted into the side clamp 31 through a guide groove. Positioning holes adapted to the positioning post 35 are opened on the bottom of both sides of the pole-mounted circuit breaker body 11. In particular, when the pole-mounted circuit breaker body 11 moves downward into the mounting groove and the side clamp 31 moves upward, the positioning post 35 corresponds to the positioning hole. A fourth spring with one end connected to a side wall of the guide groove is fitted on the outer surface of each of the four positioning posts 35. The fourth spring is used to reset the positioning post 35 after releasing the pressure on it. A linkage plate 36 is fixed to the inner side of the four positioning posts 35. A fourth wedge block 37 is fixed on the linkage plate 36.

[0060] A horizontal groove is provided in the middle of both sides of the mounting groove. A vertical plate 38 is slidably installed in the horizontal groove. A fourth main wedge 39 corresponding to the fourth auxiliary wedge 37 is fixed on the top of one side of the vertical plate 38. In the initial state, the fourth main wedge 39 is completely in the horizontal groove. A third spring is installed on the top of the other side of the vertical plate 38, with one end connected to the inner wall of the horizontal groove. The third spring is used to reset the vertical plate 38 after it is released from the pressure. In particular, a through groove is provided on the top of one side wall of the horizontal groove to allow the fourth main wedge 39 to pass smoothly. An entry groove is provided on the outer wall of the side clamp 31. When the side clamp 31 moves upward under the drive of the double inclined wedge 32, the entry groove will connect with the through groove. At this time, the fourth main wedge 39 can move into the guide groove through the through groove and the entry groove.

[0061] A third auxiliary wedge 310 is installed on the other side of the vertical plate 38. Two third main wedges 311 are installed on one side of the moving part 251 and inserted into the horizontal groove. In the initial state, the third main wedge 311 is in contact with the third auxiliary wedge 310. When no resistance force is generated, the upper surface of the third main wedge 311 is close to the lower surface of the third spring.

[0062] Specifically, as the moving part 251 moves downward, the third main wedge 311 moves downward synchronously. During this process, it gradually pushes the vertical plate 38 toward the side clamp 31 by squeezing the third auxiliary wedge 310. At the same time, the fourth main wedge 39 gradually enters the guide groove. During this process, the fourth main wedge 39 gradually squeezes the fourth auxiliary wedge 37 and drives the linkage plate 36 to move the positioning column 35 outward, so that the positioning column 35 is inserted into the positioning hole on the pole-mounted circuit breaker body 11, thereby positioning the pole-mounted circuit breaker body 11 in a lateral position. With the help of the positioning plate 252, the pole-mounted circuit breaker body 11 is fixed in multiple directions. At the same time, the operation is simple, solving the cumbersome method of fixing with multiple bolts and nuts, which is required in the past, and greatly saving the time of installation and subsequent disassembly of the pole-mounted circuit breaker body 11.

[0063] Specifically, this plug-in pole-mounted circuit breaker operates / is used as follows:

[0064] (a) Installation steps

[0065] 1. Initial inspection: Confirm that the device is in its initial state and that the positions of all components, such as the receiving plate 21, the moving part 251, the positioning plate 252, and the side clamp 31, as well as the spring conditions, meet the initial requirements.

[0066] 2. Place the body: Place the pole-mounted circuit breaker body 11 stably on the receiving plate 21, ensuring that the positioning groove 253 corresponds to the positioning plate 252 and the positioning hole corresponds to the positioning post 35.

[0067] 3. The receiving plate 21 descends: the first worm 242 of the first rotating pair 24 is rotated, driving the first worm wheel 241 and the first screw 23 to move down, which in turn drives the receiving plate 21 and the pole-mounted circuit breaker body 11 to descend and fit against the base plate 22. At the same time, the side clamping seat 31 is driven to rise through the first main wedge block 33 and the double inclined wedge block 32 to complete the initial lateral clamping.

[0068] 4. Multi-directional positioning: Rotating one second worm gear 262 drives two second worm gears 262 to rotate synchronously via pulleys and timing belts, driving the second turbine 261, second screw 257, and moving part 251 to move downwards; simultaneously, the positioning plate 252 is inserted into the positioning groove 253 (vertical positioning) and the positioning pin 35 is inserted into the positioning hole (precise lateral positioning).

[0069] 5. Locking and fixing: Screw the bolts on the stand into the threaded holes of the disc to fix the positions of the first worm 242 and the second worm 262, and the installation is complete;

[0070] (II) Disassembly Steps

[0071] 1. Unlock the worm gears: Unscrew the bolts on the stage to release the restriction on the first worm gear 242 and the second worm gear 262;

[0072] 2. Release positioning: Rotate the second worm gear 262 in the reverse direction to move the moving part 251 upward, reset all springs, and remove the positioning plate 252 and positioning post 35 from the corresponding positioning structure. The side clamp 31 is released from clamping and reset.

[0073] 3. The receiving plate 21 rises: The first worm gear 242 is rotated in the opposite direction, driving the receiving plate 21 and the pole-mounted circuit breaker body 11 to rise to the initial position;

[0074] 4. Remove the main body: Smoothly remove the main body 11 of the pole-mounted circuit breaker, check the reset status of each component, and complete the disassembly.

[0075] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A plug-in pole-mounted circuit breaker, comprising a base (10) mounted on a utility pole support, wherein a pole-mounted circuit breaker body (11) is mounted on the base (10), characterized in that, The base (10) has an installation unit (20) installed in the middle by opening an installation groove. The installation unit (20) includes a support plate (21) for placing the pole-mounted circuit breaker body (11) which is slidably installed in the installation groove. A first screw (23) is installed on the lower surface of the support plate (21). The first screw (23) moves downward via the first rotating pair (24) mounted on the lower surface of the base (10), and controls the receiving plate (21) together with the pole-mounted circuit breaker body (11) placed on its surface to move into the base (10); A base plate (22) is fixed on the inner bottom wall of the mounting groove. A vertical positioning component (25) is assembled at the end of the base plate (22) by opening a limiting groove. The vertical positioning component (25) includes two movable parts (251) installed in the limiting groove. A positioning plate (252) is inserted into the movable part (251) by opening two through grooves. Positioning grooves (253) corresponding to the positioning plates (252) are opened on both sides of the lower surface of the pole-mounted circuit breaker body (11). The positioning plate (252) is pushed into the positioning groove (253) when the moving part (251) moves downward via the second main wedge block (254) installed on one side wall of the through groove; A second auxiliary wedge (255) corresponding to the second main wedge (254) is fixed on one side of the positioning plate (252), and a second spring (256) with one end connected to the inner wall of the limiting groove is installed on the other side of the positioning plate (252). A second screw (257) is installed on the lower surface of the moving part (251), and a second rotating pair (26) corresponding to the second screw (257) is assembled on both sides of the lower surface of the base (10). The second rotating pair (26) includes a second turbine (261) rotatably connected to the lower surface of the base (10) via a second main bearing seat. The second screw (257) is threaded through one end of the base (10) and connected to the middle of the second turbine (261). A second worm (262) is rotatably connected to the side of the lower surface of the base (10) near the second turbine (261) via a second auxiliary bearing seat. A pulley is fixed to one end of each of the two second worms (262), and a synchronous belt is meshed on both pulleys. The first rotating pair (24) includes a first turbine (241) rotatably connected to the bottom of the base (10) via a first main bearing. The first screw (23) is threaded through one end of the base (10) and connected to the middle of the first turbine (241). The lower surface of the base (10) near the first turbine (241) is rotatably connected to a first worm gear (242) via a first secondary bearing seat.

2. The plug-in pole-mounted circuit breaker according to claim 1, characterized in that, Both sides of the mounting groove are equipped with a horizontal positioning component (30) through vertical grooves. The horizontal positioning component (30) includes a side clamp (31) that is slidably installed in the vertical groove. A double inclined wedge (32) is slidably installed on the bottom wall of the mounting groove near the side clamp (31). Both ends of the receiving plate (21) are fixed with a first main wedge (33) corresponding to one end of the double inclined wedge (32). A inclined groove (34) corresponding to the other end of the double inclined wedge (32) is opened at the bottom of one side of the side clamp (31).

3. A plug-in pole-mounted circuit breaker according to claim 2, characterized in that, The side clamp (31) is fitted with a positioning post (35) through a guide groove. The bottom of both sides of the pole-mounted circuit breaker body (11) is provided with positioning holes that are compatible with the positioning post (35). The outer surfaces of the four positioning posts (35) are fitted with a fourth spring with one end connected to a side wall of the guide groove. The inner sides of the four positioning posts (35) are fixed with a linkage plate (36). A fourth wedge block (37) is fixed on the linkage plate (36).

4. A plug-in pole-mounted circuit breaker according to claim 3, characterized in that, A horizontal groove is provided in the middle of both sides of the mounting groove. A vertical plate (38) is slidably installed in the horizontal groove. A fourth main wedge (39) corresponding to the fourth auxiliary wedge (37) is fixed on the top of one side of the vertical plate (38). A third spring connected to the inner wall of the horizontal groove is installed on the top of the other side of the vertical plate (38).

5. A plug-in pole-mounted circuit breaker according to claim 4, characterized in that, A third auxiliary wedge (310) is installed on the other side of the vertical plate (38), and two third main wedges (311) are installed on one side of the moving part (251) and inserted into the horizontal groove.

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