Primary and secondary fusion pole-mounted circuit breaker convenient for wiring

Abstract

The invention discloses a primary and secondary fusion pole-mounted circuit breaker convenient for wiring, and relates to the technical field of outdoor power distribution system equipment.The primary and secondary fusion pole-mounted circuit breaker comprises a circuit breaker body and a plurality of second wiring terminals, the circuit breaker body is provided with a plurality of first wiring terminals, and the first wiring terminals and the second wiring terminals are provided with mounting round holes which are symmetrically distributed; the first wiring terminal is provided with a detachable connecting assembly which enables the first wiring terminal to be temporarily fixed with the second wiring terminal. According to the invention, through the connecting assembly, the terminal can be quickly disassembled and assembled, and labor cost and equipment loss are reduced; the L-shaped clamping block and the spring are preliminarily positioned, the locking frame and the limiting frame are linked to ensure stable connection, and the convex column has positioning and detection functions to ensure the contact area; the fool-proof structure avoids misoperation damage, ensures the testing authenticity, improves the wiring efficiency, and meets the temporary wiring requirement.

Description

Technical Field

[0001] This invention relates to the field of outdoor power distribution system equipment technology, and in particular to a primary and secondary integrated pole-mounted circuit breaker that is easy to wire. Background Technology

[0002] In 10kV outdoor power distribution systems, the integrated primary and secondary pole-mounted circuit breaker (PBT) serves as the core equipment for switching load currents and closing short-circuit currents, and its operational stability directly determines the reliability of the power distribution network. This equipment mainly consists of the switch body, intelligent controller (FTU), connecting cables, and power voltage transformers. Through collaborative work with the intelligent controller, it can achieve key functions such as automated monitoring and fault isolation of the power distribution network, making it a crucial foundational component for building modern intelligent power distribution networks.

[0003] In key stages such as the R&D verification, production quality inspection, and pre-installation commissioning of primary and secondary integrated pole-mounted circuit breakers, electrical performance testing is required through temporary circuit connections to verify whether the operating parameters of the equipment meet the standards under rated current, short-circuit current, and other conditions. However, the temporary wiring methods commonly used in the industry have significant technical defects: On the one hand, the mechanical strength and sealing performance of traditional temporary clamping and fixing structures (such as simple clamps and snap-fit ​​connections) are insufficient, and they cannot accurately simulate the fastening force, effective contact area, and vibration resistance provided by bolt and nut fixing methods in actual application scenarios. This makes it difficult to expose potential fault hazards such as increased contact resistance due to high temperature and poor contact caused by vibration during long-term operation, affecting the authenticity and reliability of the test results. On the other hand, if a formal bolt-fixed wiring method is used to pursue test accuracy, cumbersome bolt disassembly and assembly operations are required before and after each test. This not only significantly increases manpower and time costs but may also lead to problems such as wear on equipment terminals and stripped threads due to frequent disassembly and assembly, increasing the risk of equipment damage.

[0004] The contradiction between the authenticity of the above tests and the efficiency of operation has become a key factor restricting the development progress, production quality control and on-site installation and commissioning efficiency of primary and secondary integrated pole-mounted circuit breakers. Therefore, the development of a primary and secondary integrated pole-mounted circuit breaker that combines convenient wiring and reliable connection performance has become an urgent need in the field of outdoor power distribution equipment. Summary of the Invention

[0005] In order to overcome the shortcomings of traditional temporary wiring methods, such as insufficient mechanical strength and sealing, difficulty in simulating actual fastening force and vibration resistance, and the cumbersome operation and easy equipment damage of formal bolt-fixed wiring methods, this invention provides a convenient primary and secondary integrated pole-mounted circuit breaker.

[0006] A convenient primary and secondary integrated pole-mounted circuit breaker includes a circuit breaker body and a plurality of second terminals. The circuit breaker body is provided with a plurality of first terminals. Both the first and second terminals are provided with symmetrically distributed mounting holes. The first terminals are provided with detachable connecting components for temporarily fixing them to the second terminals.

[0007] Furthermore, the connecting assembly includes a connecting frame disposed on the first terminal, a positioning frame with left and right openings fixedly connected inside the connecting frame, rectangular through holes for the terminal to enter and exit on both the left and right side walls of the connecting frame, the height difference between the rectangular through holes on the left and right sides being the thickness of the second terminal, locking frames slidably connected to both the top and bottom sides of the connecting frame, each locking frame being connected to the inner wall of the connecting frame by a first tension spring, each first tension spring being wound around an adjacent locking frame, each locking frame having a protrusion matching the mounting hole on the side closest to each other, the protrusion of the lower locking frame passing through the circular through hole in the bottom wall of the positioning frame and inserting into the mounting hole of the first terminal, the protrusion of the upper locking frame passing through the circular through hole in the top wall of the positioning frame and inserting into the mounting hole of the second terminal, and a locking assembly for locking the locking frame is provided on the connecting frame.

[0008] Furthermore, the positioning assembly includes symmetrical sliding limit frames connected to the left and right walls of the connecting frame, and each limit frame is connected to the connecting frame by a second tension spring.

[0009] Furthermore, each limiting frame has a guide ramp on the side near the positioning frame, and the locking frame is pressed and engaged with the limiting frame through the guide ramp.

[0010] Furthermore, the positioning frame is slidably connected with L-shaped locking blocks that are symmetrically distributed front and back, and each L-shaped locking block is connected to the inner wall of the positioning frame with a first spring.

[0011] Furthermore, each of the L-shaped blocks has a guide ramp on the side where they are close to each other.

[0012] Furthermore, each L-shaped card block has symmetrically distributed limiting plates fixed to both sides, and the upper limiting frame has a limiting groove on the side near the limiting plate. The limiting plate and the limiting groove work together to achieve the foolproof function.

[0013] Furthermore, pressure plates are slidably connected to the inner walls of the top and bottom of the positioning frame. The pressure plates are connected to the inner walls of the positioning frame by a second spring. Each pressure plate has protrusions on both the left and right sides. Each locking frame has a groove on the side of the protrusion closest to the protrusion. The protrusions of the pressure plates are embedded in the adjacent grooves.

[0014] Furthermore, each of the first terminals has symmetrically distributed chamfered bevels on its insertion end.

[0015] Compared with the prior art, the present invention has the following advantages: The present invention achieves quick fixing and disassembly of the first and second terminals through the connecting components, eliminating the need for frequent bolt disassembly and assembly, and significantly reducing labor time costs and equipment wear risks; the L-shaped locking block, in conjunction with the first spring, achieves initial positioning, and the locking frame and limit frame work together to ensure stable connection; the protruding column has both positioning calibration and positioning detection functions, ensuring that the contact area of ​​the two terminals meets the standard; the foolproof structure, through the cooperation of the limit plate and the limit groove, avoids damage caused by forced operation when the terminal is not fully inserted, thus significantly improving the efficiency of wiring operations while ensuring the authenticity of the test, and meeting the basic temporary wiring needs of the research and development, production and debugging stages.

[0016] This invention solves the problem of wear on the contact surface of the terminal during long-term testing by using the longitudinal clamping force of the pressure plate; the linkage design between the pressure plate and the locking frame ensures that the pressure plate fits tightly against the terminal after locking, maintaining tight contact and avoiding increased contact resistance that could affect the accuracy of test data, effectively simulating the tightening effect of a formal bolt fixation; it retains the characteristics of convenient operation while improving connection reliability and test stability, and is especially suitable for long-term or high-frequency testing scenarios, further broadening the applicability of the equipment. Attached Figure Description

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

[0018] Figure 2 This is a three-dimensional structural diagram of the connecting frame, positioning frame, and locking bracket of the present invention.

[0019] Figure 3 This is a three-dimensional structural cross-sectional view of the locking frame and limiting frame and other components of the present invention.

[0020] Figure 4 This is a three-dimensional structural separation view of the connecting frame, positioning frame, and locking frame of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the positioning frame, locking block, and first spring components of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the card block of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the connecting frame, positioning frame, limiting frame, card block, and limiting plate of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the limiting frame, the locking block, and the limiting plate of the present invention.

[0025] Figure 9 This is a three-dimensional structural diagram of the positioning frame, pressure plate, and second spring components of the present invention.

[0026] Figure 10 This is a three-dimensional structural diagram of the positioning frame, locking bracket, and pressure plate of the present invention.

[0027] The above-mentioned figures include the following reference numerals: 1: circuit breaker body, 101: first terminal, 102: second terminal, 2: connecting frame, 3: positioning frame, 4: locking frame, 5: first tension spring, 6: limiting frame, 601: guide slope, 7: second tension spring, 8: L-shaped block, 801: guide slope, 9: first spring, 10: limiting plate, 1001: limiting groove, 11: pressure plate, 111: sliding groove, 12: second spring. Detailed Implementation

[0028] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0029] Example 1: A convenient primary and secondary integrated pole-mounted circuit breaker, such as... Figure 1 and Figure 4 As shown, the circuit includes a circuit breaker body 1 as the main load-bearing component and several second terminals 102. The second terminals 102 serve as terminals for temporary circuits, used to temporarily connect the temporary circuits to the circuit breaker body 1. The circuit breaker body 1 is provided with several first terminals 101. Each first terminal 101 has a symmetrically distributed chamfered bevel at its insertion end. The chamfered bevel serves as a guide, allowing the first terminal 101 to smoothly push open the L-shaped locking block 8 and enter the positioning frame 3 when inserted, reducing the difficulty of insertion. Both the first terminals 101 and the second terminals 102 are provided with symmetrically distributed mounting holes, which provide reference hole positions for subsequent positioning and fixing. The first terminals 101 are provided with a detachable connecting component for temporary fixing to the second terminals 102. This connecting component solves the problems of insufficient mechanical strength of traditional temporary wiring and cumbersome disassembly and assembly of permanent bolts, achieving convenient and reliable temporary wiring fixing.

[0030] like Figures 2-4 As shown, specifically, the connecting assembly includes a connecting frame 2 disposed on the first terminal 101. A positioning frame 3 with left and right openings is fixedly connected inside the connecting frame 2 to accommodate the first terminal 101 and the second terminal 102, thereby limiting the position of the two terminals. The inner height of the connecting frame 2 is the thickness of the two terminals, which is used to ensure that the two terminals can fit tightly after being stacked, avoiding gaps that affect the contact effect. Rectangular through holes for the terminals to enter and exit are opened on the left and right side walls of the connecting frame 2. There is a certain height difference between the rectangular through holes on the left and right sides, which is the thickness of the second terminal 102, so that the two terminals can be accurately aligned after being inserted. Locking brackets 4 are slidably connected to the top and bottom sides of the connecting frame 2. Each locking bracket 4 is connected to the inner wall of the connecting frame 2 by a first tension spring 5, and each first tension spring 5 is wound around the adjacent locking bracket 4.

[0031] The first tension spring 5 provides a reset force for the locking frame 4, ensuring that the protrusion can be stably inserted into the mounting hole. The locking frames 4 are provided with protrusions that match the mounting holes on their adjacent sides. The protrusions are used to insert into the mounting holes to achieve positioning and fixation. The top and bottom walls of the positioning frame 3 are provided with symmetrically distributed circular through holes to provide passage for the protrusions. The protrusion of the lower locking frame 4 passes through the circular through hole in the bottom wall of the positioning frame 3 and is inserted into the mounting hole of the first terminal 101, thereby fixing the connecting frame 2 onto the first terminal 101. The protrusion of the upper locking frame 4 passes through the circular through hole in the top wall of the positioning frame 3 and is inserted into the mounting hole of the second terminal 102, thereby fixing the second terminal 102 into the positioning frame 3. The connecting frame 2 is provided with a locking component for locking the locking frame 4. The locking component is used to prevent the locking frame 4 from loosening and to ensure connection stability.

[0032] The protruding post on the locking frame 4 also has a positioning and calibration function. Only when the protruding post on the locking frame 4 is aligned vertically with the mounting hole of the first terminal 101 or the second terminal 102 can the locking frame 4 be accurately inserted into the mounting hole of the first terminal 101 or the second terminal 102. In this way, the protruding post can achieve precise positioning of the first terminal 101 and the second terminal 102, ensuring that the contact area of ​​the two terminals meets the standard. When the connecting component is installed on the first terminal 101, it can be installed stably. At the same time, when the second terminal 102 is inserted into the positioning frame 3, the insertion of the second terminal 102 can also be judged by whether the protruding post can be inserted. Only when the second terminal 102 is aligned vertically with the mounting hole of the first terminal 101 does it indicate that the installation is in place, thus playing the role of installation detection.

[0033] like Figure 2 and Figure 3 As shown, specifically, the locking assembly includes symmetrically sliding limiting frames 6 connected to the left and right walls of the connecting frame 2. Each limiting frame 6 is connected to the connecting frame 2 via a second tension spring 7, which provides a restoring force to the limiting frame 6, ensuring stable engagement between the limiting frame 6 and the locking frame 4. The locking frame 4 engages with adjacent limiting frames 6 through a pressing fit. The limiting frames 6 lock the position of the locking frame 4, preventing it from disengaging from the wiring terminal. Each limiting frame 6 has a guide slope 601 on the side near the positioning frame 3. The locking frame 4 engages with the limiting frame 6 through the guide slope 601. The guide slope 601 converts the vertical force of the locking frame 4 into the lateral force of the limiting frame 6, enabling automatic avoidance by the limiting frame 6 and reducing operational resistance.

[0034] like Figure 5 and Figure 6As shown, specifically, L-shaped locking blocks 8 are symmetrically distributed front and rear within the positioning frame 3. A first spring 9 is connected between the L-shaped locking blocks 8 and the inner wall of the positioning frame 3. The first spring 9 provides clamping force to the L-shaped locking blocks 8. Its function is that when the connecting component is installed on the first terminal 101, the L-shaped locking blocks 8 can clamp the first terminal 101, making the connecting component more stably fixed on the first terminal 101 and preventing the connecting frame 2 from loosening. When both the first terminal 101 and the second terminal 102 are inserted into the positioning frame 3, the first terminal 101 will open the L-shaped locking blocks 8, so that the first spring 9 is always in a compressed state, ensuring that the L-shaped locking blocks 8 can continuously provide clamping force.

[0035] Each of the L-shaped locking blocks 8 has a guide slope 801 on one side that is close to each other. The guide slope 801 is used to guide the wire terminal to be inserted smoothly and reduce the insertion resistance. When the second wire terminal 102 is inserted into the positioning frame 3, the second wire terminal 102 will squeeze the guide slope 801, causing the L-shaped locking blocks 8 to move outward and be opened. The first spring 9 will deform. Under the action of the first spring 9, the L-shaped locking blocks 8 will clamp the second wire terminal 102. The function of this structure is that when the second wire terminal 102 is inserted into the positioning frame 3, even if the wire of the temporary circuit tends to pull the second wire terminal 102 downward under the action of gravity, the second wire terminal 102 is not easy to fall out of the positioning frame 3 under the clamping action of the L-shaped locking blocks 8, thus playing the function of preventing falling out.

[0036] like Figure 7 and Figure 8 As shown, specifically, each L-shaped card block 8 has symmetrically distributed limiting plates 10 fixed to both the left and right sides. The upper limiting frame 6 has a limiting groove 1001 on the side close to the limiting plate 10. The limiting plate 10 and the limiting groove 1001 cooperate to achieve the foolproof function.

[0037] Its specific working mechanism is as follows: When the connecting component is installed on the first terminal 101, the L-shaped locking block 8 will be locked on the front and rear sides of the first terminal 101, so that the connecting component can be firmly fixed on the first terminal 101. At this time, the upper locking frame 4 has not been pressed down, and the upper locking frame 4 will be on the upper side of the guide slope 601. At the same time, the limiting plate 10 is located in the limiting groove 1001, blocking the path of the limiting frame 6 sliding outward. Then the second terminal 102 is inserted into the positioning frame 3. If the second terminal 102 is not fully inserted, the L-shaped locking block 8 cannot be fully pushed outward.

[0038] At this time, pressing the upper locking frame 4 will cause the locking frame 4 to press against the guide slope 601 of the limiting frame 6. However, due to the obstruction of the limiting plate 10, the limiting frame 6 cannot slide freely outward. The guide slope 601 will continue to press against the upper locking frame 4. The operator will notice that the second terminal 102 is not inserted in time because he cannot press the locking frame 4. When the second terminal 102 is pushed into place, it will completely push the L-shaped locking block 8 outward. The L-shaped locking block 8 will drive the limiting plate 10 to move outward. The limiting plate 10 will exit from the limiting groove 1001 and no longer obstruct the outward movement of the limiting frame 6. At this time, pressing the upper locking frame 4 can be done smoothly. The protrusion on the locking frame 4 will be accurately inserted into the mounting hole of the second terminal 102 to achieve fixation. This foolproof function can prevent equipment damage caused by forcibly pressing the locking frame 4 because the second terminal 102 is not inserted in place.

[0039] Working principle: During the research and development, production testing or on-site commissioning of the primary and secondary integrated pole-mounted circuit breaker, the connecting components need to be pre-installed on the first terminal 101 of the circuit breaker body 1. The steps are as follows: Hold the connecting frame 2 and insert the first terminal 101 into the positioning frame 3 through the rectangular through hole on the left side of the connecting frame 2; the chamfered bevel of the insertion end of the first terminal 101 contacts the inner wall of the L-shaped locking block 8. As the insertion depth increases, the first terminal 101 squeezes the L-shaped locking block 8 and moves it to the outside of the positioning frame 3, and the first spring 9 produces a slight deformation.

[0040] When the first terminal 101 is inserted into place, the first spring 9 returns to its original position, and the L-shaped locking block 8 clamps the front and rear sides of the first terminal 101 to achieve the initial positioning of the connecting component; the lower locking frame 4 is pushed upward, and the lower first tension spring 5 is stretched; the locking frame 4 presses the guide slope 601 of the lower limiting frame 6, pushing the limiting frame 6 to move outward, and the second tension spring 7 deforms.

[0041] When the protrusion of the lower locking frame 4 passes through the round hole in the bottom wall of the positioning frame 3 and is inserted into the mounting round hole of the first terminal 101, the locking frame 4 disengages from the guide slope 601; the lower second tension spring 7 resets, the limiting frame 6 moves inward and locks the position of the locking frame 4, thus completing the fixing of the connecting assembly and the first terminal 101.

[0042] Take the second terminal 102 of the temporary circuit and insert it into the positioning frame 3 through the rectangular through hole on the right side of the connecting frame 2; the second terminal 102 contacts the guide slope 801 of the L-shaped card block 8, and as the insertion depth increases, it squeezes the L-shaped card block 8 to move further outward, and the first spring 9 continues to deform.

[0043] If the second terminal 102 is not fully inserted, the L-shaped locking block 8 is not fully opened, and the limiting plates 10 on both sides are still in the limiting groove 1001 of the upper limiting frame 6, preventing the limiting frame 6 from sliding outward; at this time, pressing the upper locking frame 4 will prevent the locking frame 4 from moving down due to the obstruction of the guide slope 601. The operator can judge that the terminal is not in place by the operating resistance and needs to continue pushing the second terminal 102.

[0044] If the second terminal 102 is fully inserted, the L-shaped locking block 8 is fully opened, the limiting plate 10 exits from the limiting groove 1001, and the obstruction to the limiting frame 6 is released; press the upper locking frame 4, the locking frame 4 squeezes the guide slope 601 to make the limiting frame 6 move outward, and the second tension spring 7 deforms; when the protrusion of the upper locking frame 4 is inserted into the mounting hole of the second terminal 102, the locking frame 4 disengages from the guide slope 601, the second tension spring 7 resets, the limiting frame 6 locks the locking frame 4, and the second terminal 102 is fixed.

[0045] After debugging, the upper limiting frame 6 is opened outward, and the second tension spring 7 deforms; after the locking frame 4 is released, the upper first tension spring 5 returns to its original position, the locking frame 4 moves upward, and the protrusion exits from the mounting hole of the second terminal 102; the limiting frame 6 is released to return to its original position, and then the second terminal 102 is pulled out of the positioning frame 3; the lower limiting frame 6 is opened outward, and the lower locking frame 4 returns to its original position under the action of the first tension spring 5, and the protrusion exits from the mounting hole of the first terminal 101; the limiting frame 6 is released, and finally the connecting frame 2 is removed from the first terminal 101, and the L-shaped locking block 8 returns to its original position under the action of the first spring 9.

[0046] Example 2: Figure 9 and Figure 10 As shown, specifically, pressure plates 11 are slidably connected to the inner walls of the top and bottom of the positioning frame 3. The pressure plates 11 are connected to the inner walls of the positioning frame 3 by a second spring 12. The second spring 12 is used to provide clamping force for the pressure plates 11. Each pressure plate 11 has protrusions on both the left and right sides. Each locking frame 4 has a groove 111 on the side near the protrusion. The protrusions of the pressure plates 11 are embedded in the adjacent grooves 111. The grooves 111 and the protrusions cooperate to realize the linkage between the locking frame 4 and the pressure plates 11. In the initial state, the locking frame 4 is not inserted into the first terminal 101 or the second terminal 102. The pressure plates 11 are embedded in the inner wall of the positioning frame 3. The second spring 12 is always in a compressed state. When the locking frame 4 slides down to insert into the terminal, it will drive the pressure plates 11 to move synchronously through the grooves 111. Under the action of the second spring 12, the pressure plates 11 are pressed tightly against the surface of the terminal, further enhancing the fixing stability of the terminal and ensuring tight contact.

[0047] Initially, the locking frame 4 is not inserted with any terminals and is in an outward-open state; the locking frame 4 engages with the protrusion of the pressure plate 11 through the sliding groove 111, causing the pressure plate 11 to sink into the inner wall of the positioning frame 3, and the second spring 12 is in a compressed state; the top and bottom inner walls of the positioning frame 3 remain flat, ensuring that the first terminal 101 and the second terminal 102 can be smoothly inserted without structural obstruction.

[0048] The insertion process of the first terminal 101 and the second terminal 102, the foolproof detection, and the fixing operation of the locking frame 4 are completely consistent with those in Embodiment 1, and will not be repeated here.

[0049] When the protrusions of the upper and lower locking brackets 4 are inserted into the mounting holes of the first terminal 101 and the second terminal 102 respectively, the locking brackets 4 no longer press against the protrusions of the pressure plate 11; the second spring 12 releases its elastic potential energy and pushes the pressure plate 11 to move towards the terminal, the upper pressure plate 11 is tightly attached to the top of the second terminal 102, and the lower pressure plate 11 is tightly attached to the bottom of the first terminal 101.

[0050] The upper and lower pressure plates 11 apply a continuous clamping force to the two overlapping terminals from the longitudinal direction. Even if the contact surface of the terminals wears due to long-term testing, the clamping action of the pressure plates 11 can still maintain the tight contact between the two terminals, avoiding the impact of increased contact resistance on the accuracy of test data, and effectively simulating the tightening effect of a formal bolt.

[0051] During disassembly, the limiting frame 6 is pushed outward to reset the locking frame 4. The locking frame 4 pushes the pressure plate 11 back into the inner wall of the positioning frame 3 through the slide groove 111, and the second spring 12 is compressed again. The subsequent disassembly steps of the second terminal 102 and the connecting components are the same as in Embodiment 1 to ensure ease of operation.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A convenient primary and secondary integrated pole-mounted circuit breaker, characterized in that, It includes a circuit breaker body (1) and several second terminals (102). The circuit breaker body (1) is provided with several first terminals (101). Both the first terminals (101) and the second terminals (102) are provided with symmetrically distributed mounting holes. The first terminals (101) are provided with a detachable connection component for temporarily fixing them to the second terminals (102).

2. The convenient primary and secondary integrated pole-mounted circuit breaker as described in claim 1, characterized in that, The connecting assembly also includes a connecting frame (2) disposed on the first terminal (101). A positioning frame (3) with left and right openings is fixedly connected inside the connecting frame (2). Rectangular through holes for the terminal are opened on the left and right side walls of the connecting frame (2). The height difference between the rectangular through holes on the left and right sides is the thickness of the second terminal (102). Locking brackets (4) are slidably connected to the top and bottom sides of the connecting frame (2). Each locking bracket (4) is connected to the inner wall of the connecting frame (2) by a first tension spring (5). The first tension springs (5) are all wrapped around the adjacent locking frames (4). The locking frames (4) are provided with protrusions that match the mounting holes on the side that are close to each other. The protrusion of the lower locking frame (4) passes through the circular through hole of the bottom wall of the positioning frame (3) and is inserted into the mounting hole of the first terminal (101). The protrusion of the upper locking frame (4) passes through the circular through hole of the top wall of the positioning frame (3) and is inserted into the mounting hole of the second terminal (102). The connecting frame (2) is provided with a locking component for locking the locking frame (4).

3. The pole-mounted circuit breaker with integrated primary and secondary circuit breaker as described in claim 2, characterized in that, The positioning assembly includes a limiting frame (6) that slides symmetrically on the left and right walls of the connecting frame (2). Each limiting frame (6) is connected to the connecting frame (2) by a second tension spring (7).

4. The convenient primary and secondary integrated pole-mounted circuit breaker as described in claim 3, characterized in that, Each limiting frame (6) has a guide slope (601) on the side near the positioning frame (3), and the locking frame (4) is pressed and engaged with the limiting frame (6) through the guide slope (601).

5. A convenient primary and secondary integrated pole-mounted circuit breaker as described in claim 4, characterized in that, The positioning frame (3) is connected by sliding L-shaped blocks (8) that are symmetrically distributed in front and behind. The L-shaped blocks (8) and the inner wall of the positioning frame (3) are connected by a first spring (9).

6. The pole-mounted circuit breaker with integrated primary and secondary circuits as described in claim 5, characterized in that, The L-shaped blocks (8) are provided with guide ramps (801) on the sides that are close to each other.

7. A convenient primary and secondary integrated pole-mounted circuit breaker as described in claim 6, characterized in that, Each L-shaped card block (8) has symmetrically distributed limiting plates (10) fixed on both sides. The upper limiting frame (6) has a limiting groove (1001) on the side close to the limiting plate (10). The limiting plate (10) and the limiting groove (1001) work together to achieve the foolproof function.

8. A primary and secondary integrated pole-mounted circuit breaker as described in claim 7, characterized in that, The top and bottom inner walls of the positioning frame (3) are slidably connected with pressure plates (11). The pressure plates (11) and the inner walls of the positioning frame (3) are connected by a second spring (12). Each pressure plate (11) has a protrusion on both the left and right sides. Each locking frame (4) has a groove (111) on the side near the protrusion of the protrusion. The protrusion of the pressure plate (11) is embedded in the adjacent groove (111).

9. A primary and secondary integrated pole-mounted circuit breaker as described in claim 8, characterized in that, Each first terminal (101) has symmetrically distributed chamfered bevels on its insertion end.

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