Power supply connecting piece for hot-line work of power cabinet

Abstract

The invention relates to the field of power supply construction, and discloses a power supply connecting piece for power cabinet hot-line work, the power supply connecting piece comprises a female head, a sealing block, a first mounting cylinder and a first wire are mounted in the female head, the outer surface of the female head is provided with a plurality of groups of placing grooves, and steel balls and second springs are movably sleeved in the placing grooves; a mounting cylinder II and an electric connecting rod are mounted in the male head. According to the connecting piece, the resultant force (namely the resultant force between the magnetic attraction force of the permanent magnet ring and the spring tension force of the second spring) borne by all the steel balls is the same by utilizing the annular design of the permanent magnet ring and the circumferential equidistant distribution of the multiple groups of steel balls, namely the strokes after being stressed are the same; by arranging the steel balls on the male head, after the male head is pushed by the steel balls, all parts, in contact with the female head, of the male head can be kept under the same stress, so that all parts between the sleeving combination parts of the female head and the male head are uniformly stressed, no gap is formed, and the waterproof performance of the connecting piece is remarkably enhanced.

Description

Technical Field

[0001] This application relates to the field of power supply construction technology, and in particular to a power supply connector for live-line work on power cabinets. Background Technology

[0002] A power cabinet is a metal box structure that maintains the power supply system. It houses various electrical appliances and functions as a power switch, circuit breaker, and power hub. When working with live equipment, the power cabinet requires power supply connectors to maintain electrical connection, ensuring normal power transmission. Existing power supply connectors for live-line work on power cabinets are mainly cable joint structures, consisting of two parts: a female connector for connecting to the power cabinet and a male connector for external wires or cables. The male connector has a protruding electrical connection rod at its end, while the female connector has a groove that fits the electrical connection rod. The groove contains a conductor, allowing a circuit to be formed when the two are connected. However, this design is prone to water seepage and short circuits. The insulating components that provide insulation are generally snap-fit ​​or threaded connections, which can easily develop gaps and lose their waterproof function over time. More importantly, once water seepage occurs, it can easily penetrate the power cabinet, causing further damage. Therefore, this invention urgently needs to design a power supply connector for live-line work on power cabinets to overcome these potential defects. Summary of the Invention

[0003] This application proposes a power supply connector for live-line work on power cabinets, which has the advantages of good waterproof effect and high reliability, in order to solve the water leakage problem caused by the defects of the bayonet and threaded connection in the prior art.

[0004] To achieve the above objectives, this application adopts the following technical solution: a power supply connector for live-line work on power cabinets, comprising: The female connector has a sealing block, a mounting cylinder, and a wire installed inside. The outer surface of the female connector has multiple sets of placement grooves, and a steel ball and a spring are movably connected inside the placement grooves. The male connector has an internal mounting cylinder and an electrical connecting rod. A protective cover is fixedly installed on the left side of the outer surface of the male connector. A permanent magnet ring and a spring are movably sleeved inside the protective cover. A fixing groove is opened on the left side of the inner wall of the male connector. The steel ball is fitted into the fixing groove. The two ends of the spring are elastically connected to the permanent magnet ring and the inner wall of the protective cover, respectively. Multiple sets of connecting grooves are opened on the left side of the male connector. The female connector has multiple slots on its right side, and rubber blocks are glued to the inner wall of the slots. The rubber blocks abut against the inner wall of the male connector, and the right end of the female connector is adapted to be inserted into the left end of the male connector.

[0005] Preferably, the mounting cylinder one is fixedly installed on the right side of the inner wall of the female head, the sealing block is fixedly installed on the left side of the inner wall of the female head, the left side of the inner wall of the female head is provided with an internal thread, the inner wall of the mounting cylinder one is adapted to be inserted into two sets of connecting cylinders, the left side of the connecting cylinder is provided with conductor one, the conductor one is electrically connected to wire one, the electrical connecting rod is adapted to be inserted into the connecting cylinder, the electrical connecting rod and conductor two are welded and fixed, and the right side of conductor two is electrically connected to wire two.

[0006] Preferably, the first wire, the connecting cylinder, the electrical connecting rod, the second conductor, and the second wire are all arranged in two sets symmetrically distributed front and back. The left side of the first mounting cylinder and the right side of the second mounting cylinder are provided with isolation protrusions. A connecting piece is fixedly connected to the left side of the connecting cylinder. The two sets of connecting pieces are isolated by one set of isolation protrusions, and the two sets of second conductors are isolated by another set of isolation protrusions.

[0007] Preferably, the left side of the mounting cylinder has two sets of fitting cavities, and the connecting cylinder is fixedly installed inside the fitting cavity. The surface of the connecting piece and the right end of the mounting cylinder are both provided with positioning grooves. The right side of the conductor is fixedly connected with a positioning pin, and the positioning pin is adapted to be inserted into the positioning groove.

[0008] Preferably, the axial cross-sectional shape of the protective cover is "L" shaped, and the permanent magnet ring is adapted to be installed between the protective cover and the female head.

[0009] Preferably, the axial cross-sectional shape of the connecting groove is "L" shaped, the area of ​​the connecting groove is smaller than the area of ​​the rubber block, and the connecting groove is completely covered by the rubber block.

[0010] Preferably, the axial cross-section of the fixing groove is semi-circular, and the steel ball is engaged inside the fixing groove under the magnetic attraction of the permanent magnet ring.

[0011] Preferably, one end of the second spring is elastically connected to the inner wall of the placement groove, and the other end of the second spring is elastically connected to the steel ball, and the second spring is always in a stretched state.

[0012] Preferably, the minimum number of the placement groove, fixing groove and steel ball is set to eight sets, and the multiple sets of placement groove, fixing groove and steel ball are distributed equidistantly in a circle around the axis of the female head.

[0013] Preferably, when the permanent magnet ring and the steel ball are staggered and lose their magnetic attraction, the steel ball is pulled into the inner wall of the placement groove by the action of the second spring. At this time, the steel ball is completely inserted into the inner wall of the placement groove, the joint of the female head and the male head is interference fit, and multiple sets of water discharge grooves are opened on the right side of the inner wall of the connecting groove.

[0014] The beneficial effects of this invention are as follows: 1. This connector utilizes a magnetic design to effectively balance the pressure at the joint of the female and male connectors. The left side of the male connector wraps around the right side of the female connector. To address the waterproofing and sealing of the joint, this connector features placement and fixing grooves on the outer surface of the female connector and the inner wall of the male connector, respectively. A steel ball and a second spring are installed inside the placement groove. A permanent magnet ring, controlled by a first spring, is placed on the outer side of the male connector. When the female and male connectors are fully engaged, the permanent magnet ring and the steel ball are aligned on the same radial line as the female connector. At this point, the magnetic force exerted by the permanent magnet ring on the steel ball... Magnetic attraction draws the steel balls into the fixing groove, thus fixing the female and male connectors after they are joined. At the same time, the ring design of the permanent magnet ring and the equidistant distribution of multiple sets of steel balls ensure that the resultant force on all steel balls (i.e., the resultant force between the magnetic attraction of the permanent magnet ring and the spring tension of spring two) is the same, meaning that the stroke after being subjected to force is the same. This allows the male connector to maintain the same force on all parts of its contact with the female connector after being pushed by the steel balls. This ensures that the force is uniform at all points between the female and male connectors, preventing gaps and significantly enhancing the waterproof performance of the connector.

[0015] 2. This connector features a second line of defense for waterproofing and sealing: a connecting groove on the right side of the female connector. When the female and male connectors abut and are secured, the strong pressure generated between them squeezes and deforms the rubber block, creating an internal seal. Simultaneously, an annular connecting groove is formed on the left side of the male connector where it abuts the rubber block. This allows a large portion of the water leaking through the joint between the female and male connectors to be diverted into the connecting groove after being isolated by the rubber block. Furthermore, multiple drainage channels connected to the right side of the connecting groove allow water entering the groove to flow out along the drainage channels at the bottom. This achieves both drainage and sealing functions in the connector, significantly improving its reliability.

[0016] 3. This connector abandons the traditional snap-fit ​​and threaded fixing design, and uses a magnetic attraction plus sleeve limiting method to firmly fix the female and male heads. First, the joint between the female and male heads adopts a matching fit, which increases the contact area between the two. Then, the permanent magnet ring is used to pull multiple sets of steel balls distributed at equal angles into the fixing groove to complete the limiting and fixing of the female and male heads. This design is not only safe and reliable, reducing the stress between the joint between the female and male heads, but also has a quick release function. Simply push the permanent magnet ring to the right to make the steel balls lose the magnetic attraction and reset under the action of spring two, releasing the fixation between the female and male heads. Attached Figure Description

[0017] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of this application in a clear and understandable manner.

[0018] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a schematic diagram of the female connector of the present invention. Figure 1 ; Figure 2 This is a front sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A; Figure 4 This is a top sectional view of the overall structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B; Figure 6 This is a schematic diagram of the internal cross-section of the overall structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point C; Figure 8 This is a schematic diagram showing the separation of the male connector of the present invention; Figure 9 This is a frontal perspective view of the overall structure of the present invention; Figure 10 This is a schematic diagram of the female connector of the present invention. Figure 2 ; Figure 11 This is a side perspective view of the overall structure of the present invention.

[0019] The components are as follows: 1. Female connector; 2. Sealing block; 3. Mounting cylinder one; 4. Wire one; 5. Connecting cylinder; 51. Connecting piece; 6. Conductor one; 7. Male connector; 8. Mounting cylinder two; 9. Electrical connecting rod; 10. Conductor two; 11. Wire two; 12. Protective cover; 13. Permanent magnet ring; 14. Spring one; 15. Connecting groove; 16. Slot; 17. Rubber block; 18. Placement groove; 19. Fixing groove; 20. Steel ball; 21. Spring two; 22. Adaptor cavity; 23. Positioning groove; 24. Positioning pin; 25. Water discharge groove. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] Please see Figures 1-11 This embodiment discloses a power supply connector for live-line work on power cabinets, comprising: The female head 1 has a sealing block 2, an installation cylinder 3 and a wire 4 installed inside. Multiple sets of placement grooves 18 are opened on the outer surface of the female head 1. Steel balls 20 and springs 21 are movably connected inside the placement grooves 18. The male connector 7 has an installation cylinder 8 and an electrical connecting rod 9 installed inside. A protective cover 12 is fixedly installed on the left side of the outer surface of the male connector 7. A permanent magnet ring 13 and a spring 14 are movably sleeved inside the protective cover 12. A fixing groove 19 is opened on the left side of the inner wall of the male connector 7. A steel ball 20 is adapted and snapped into the fixing groove 19. The two ends of the spring 14 are elastically connected to the permanent magnet ring 13 and the inner wall of the protective cover 12, respectively. Multiple sets of connecting grooves 15 are opened on the left side of the male connector 7. Multiple sets of slots 16 are provided on the right side of the female head 1. A rubber block 17 is glued to the inner wall of the slot 16. The rubber block 17 abuts against the inner wall of the male head 7. The right end of the female head 1 is adapted to be inserted into the left end of the male head 7. This connector has been redesigned, utilizing a magnetic design to balance the pressure at the joint of the female connector 1 and the male connector 7. Specifically, the left side of the male connector 7 wraps around the right side of the female connector 1. To address waterproofing and sealing at the joint, a placement groove 18 and a fixing groove 19 are respectively created on the outer surface of the female connector 1 and the inner wall of the male connector 7. A steel ball 20 and a second spring 21 are installed inside the placement groove 18. A permanent magnet ring 13, controlled by a first spring 14, is placed on the outside of the male connector 7. When the female connector 1 and the male connector 7 are fully engaged, the permanent magnet ring 13 and the steel ball 20 are aligned on the same radial line as the female connector 1. At this point, the... The magnetic attraction force generated by the permanent magnet ring 13 on the steel ball 20 draws the steel ball 20 into the fixing groove 19, thereby fixing the female head 1 and the male head 7 after they are joined. At the same time, the annular design of the permanent magnet ring 13 and the equidistant distribution of multiple sets of steel balls 20 ensure that the resultant force on all steel balls 20 (i.e., the resultant force between the magnetic attraction force of the permanent magnet ring 13 and the spring tension of the second spring 21) is the same, that is, the stroke after being subjected to force is the same. This ensures that after the male head 7 is pushed by the steel ball 20, the force on all parts of its contact with the female head 1 is the same, so that the force on all parts of the joint between the female head 1 and the male head 7 is uniform and there are no gaps, thus significantly enhancing the waterproof performance of the connector.

[0022] This connector abandons the traditional snap-fit ​​and threaded fixing design, and uses a magnetic attraction and sleeve limiting method to firmly fix the female head 1 and the male head 7. First, the joint between the female head 1 and the male head 7 adopts a matching joint to increase the contact area between the two. Then, the permanent magnet ring 13 is used to pull multiple sets of equally distributed steel balls 20 into the fixing groove 19 to complete the limiting and fixing of the female head 1 and the male head 7. This design is not only safe and reliable, reducing the stress between the joint between the female head 1 and the male head 7, but also has a quick release function. Simply push the permanent magnet ring 13 to the right to make the steel balls 20 lose their magnetic attraction and reset under the action of the spring 21, thus releasing the fixation between the female head 1 and the male head 7.

[0023] Among them, the mounting cylinder 3 is fixedly installed on the right side of the inner wall of the female head 1, the sealing block 2 is fixedly installed on the left side of the inner wall of the female head 1, the left side of the inner wall of the female head 1 is provided with internal thread, the inner wall of the mounting cylinder 3 is adapted to be inserted into two sets of connecting cylinders 5, the left side of the connecting cylinder 5 is provided with conductor 6, conductor 6 is electrically connected to wire 4, the electric connecting rod 9 is adapted to be inserted into the connecting cylinder 5, the electric connecting rod 9 and conductor 10 are welded and fixed, and the right side of conductor 10 is electrically connected to wire 11. The female connector 1 is installed on the power cabinet. It is sealed by internal thread installation and the compression of the sealing block 2. The two sets of wires 4, conductor 6 and connecting cylinder 5 correspond to the positive and negative poles of power transmission, respectively.

[0024] Among them, wire 1 4, connecting cylinder 5, electrical connecting rod 9, conductor 2 10 and wire 2 11 are all set in two sets symmetrically distributed front and back. There are isolation protrusions on the left side of mounting cylinder 1 3 and the right side of mounting cylinder 2 8. Connecting piece 51 is fixedly connected to the left side of connecting cylinder 5. The two sets of connecting pieces 51 are isolated by one set of isolation protrusions, and the two sets of conductor 2 10 are isolated by another set of isolation protrusions. The first conductor 4, the connecting cylinder 5, the electrical connecting rod 9, the second conductor 10, and the second conductor 11 are all arranged in two sets symmetrically distributed front and back, so that the connectors can generate positive and negative poles and form an electric circuit after the connection is achieved.

[0025] Among them, the left side of the mounting cylinder 3 has two sets of fitting cavities 22, and the connecting cylinder 5 is fixedly installed inside the fitting cavity 22. The surface of the connecting piece 51 and the right end of the mounting cylinder 3 are both provided with positioning grooves 23. The right side of the conductor 6 is fixedly connected with a positioning pin 24, and the positioning pin 24 is adapted to be inserted into the positioning groove 23. The connecting cylinder 5 is responsible for contacting the electrical connecting rod 9 to complete the electrical connection. The conductor 6 is fixed on the inner wall of the female head 1. The positioning pin 24 installed on its right side can be adapted to be inserted into the positioning groove 23 and abut against the connecting piece 51. The positioning pin 24 has a positioning function, which maximizes the contact area between the conductor 6 and the connecting piece 51, thereby effectively improving the power transmission efficiency of the connector.

[0026] The protective cover 12 has an L-shaped axial section, and the permanent magnet ring 13 is appropriately installed between the protective cover 12 and the female head 1. This connector features a second line of defense for waterproofing and sealing: a connecting groove 15 located on the right side of the female connector 1. When the female connector 1 and male connector 7 are joined and fixed, the strong pressure generated between them squeezes and deforms the rubber block 17, thus creating an internal seal. Simultaneously, an annular connecting groove 15 is formed at the point where the male connector 7 abuts against the rubber block 17. This allows water leaking through the joint between the female connector 1 and male connector 7 to be largely isolated by the rubber block 17 and then diverted into the connecting groove 15. Since multiple drainage channels 25 are connected to the right side of the connecting groove 15, water entering the connecting groove 15 can flow out along the drainage channels 25 located at the bottom. This achieves the connector's simultaneous functions of drainage and sealing in waterproofing, significantly improving the reliability of the connector.

[0027] The axial cross-sectional shape of the connecting groove 15 is "L" shaped, the area of ​​the connecting groove 15 is smaller than the area of ​​the rubber block 17, and the connecting groove 15 is completely covered by the rubber block 17. The rubber block 17 covers the connecting groove 15, which can produce a sealing effect by being squeezed and completely cover the connecting groove 15, thereby establishing a second line of defense for sealing and waterproofing.

[0028] The axial cross-section of the fixing groove 19 is semi-circular, and the steel ball 20 is stuck inside the fixing groove 19 under the magnetic attraction of the permanent magnet ring 13. like Figure 3 As shown, the semi-circular fixing groove 19 allows only half of the steel ball 20 to enter, facilitating the subsequent reset of the steel ball 20. When the steel ball 20 enters the fixing groove 19 and engages with it, the female head 1 and the male head 7 are locked and fixed.

[0029] One end of the second spring 21 is elastically connected to the inner wall of the placement groove 18, and the other end of the second spring 21 is elastically connected to the steel ball 20. The second spring 21 is always in a stretched state. Only when the spring 21 is always under tension can it maintain the tension on the steel ball 20. When it is necessary to disassemble the connecting parts, simply move the permanent magnet ring 13 to the right to make it lose its magnetic attraction on the steel ball 20. At this time, the steel ball 20 can be reset under the tension of the spring 21.

[0030] Among them, the minimum number of placement slots 18, fixing slots 19 and steel balls 20 is set to eight sets, and multiple sets of placement slots 18, fixing slots 19 and steel balls 20 are distributed equidistantly in a circle around the axis of the female head 1. The minimum number of placement slots 18, fixing slots 19 and steel balls 20 is set to eight groups. The number can be more, but the distribution must be equidistant, and the resultant force generated by all steel balls 20 must be zero. The more groups there are, the more evenly the force on the male head 7 will be.

[0031] When the permanent magnet ring 13 and the steel ball 20 are staggered and lose their magnetic attraction, the steel ball 20 is pulled into the inner wall of the placement groove 18 by the action of the spring 21. At this time, the steel ball 20 is completely inserted into the inner wall of the placement groove 18. The joint between the female head 1 and the male head 7 is interference fit. Multiple sets of water discharge grooves 25 are opened on the right side of the inner wall of the connecting groove 15. When the permanent magnet ring 13 moves to the right, the steel ball 20 can be pulled back to the placement groove 18 by the spring 21 under the action of losing magnetic attraction, which can release the fixation between the female head 1 and the male head 7.

[0032] Working principle: When using this connector, firstly, install the female head 1 onto the mounting position of the power cabinet using its internal thread, as shown below. Figure 2 As shown, rotating the female head 1 allows it to be installed on the power cabinet. At this time, the sealing block 2 is squeezed and produces a sealing effect. Then, the male connector 7, which has external wires and cables, begins to connect to the left end of the female connector 1, as follows: Figure 4 As shown, the male head 7 moves horizontally towards the female head 1, driving the two sets of electrical connecting rods 9 to be inserted into the corresponding adapter cavity 22 and connecting cylinder 5 respectively. The electrical connecting rods 9 and the connecting cylinder 5 are fully in contact and electrically connected. As the electrical connecting rods 9 continue to be inserted into the depth of the connecting cylinder 5, the left side of the male head 7 gradually adapts and connects with the right side of the female head 1. At this time, the inner wall of the left side of the male head 7 and the inner wall of the right side of the female head 1 begin to contact. When the permanent magnet ring 13 moves to be on the same diameter line (diameter line of the female head 1) as the steel ball 20, the permanent magnet ring 13 begins to generate magnetic attraction force on the multiple sets of steel balls 20 located inside the placement groove 18, causing the steel balls 20 to begin to move towards the inside of the fixing groove 19 and stretch the second spring 21 to generate a rebound force. Finally, the steel ball 20 is completely locked in the fixing groove 19, so that the female head 1 and the male head 7 are fixed after being tightly fitted. At this time, the rubber block 17 is squeezed by the male head 7 and deformed, thereby forming a seal and blocking the connecting groove 15. Finally, the power transmission function is completed by conductor 11, conductor 10, electric connecting rod 9, connecting cylinder 5, conductor 6 and conductor 4. Since the permanent magnet ring 13 is located on one side of the outer ring of multiple sets of equally distributed steel balls 20, the multiple sets of steel balls 20 can be subjected to the same magnetic attraction force, and the inner side of the male head 7 is subjected to the same force from the multiple sets of steel balls 20. This means that the pressure at each point between the male head 7 and the female head 1 is the same after they are connected, thereby reducing the generation of gaps. Even if the seal between the female head 1 and the male head 7 fails during the connection process, the rubber block 17 provides a second seal, so that the water that seeps into the connector collects at the bottom along the connecting groove 15 and flows out along the drain groove 25 located at the bottom. During disassembly, simply push the permanent magnet ring 13 to the right, ensuring that it is misaligned with the steel ball 20. The steel ball 20, having lost the magnetic attraction of the permanent magnet ring 13, will be reset and enter the placement groove 18 under the pulling force of the spring 21, thus releasing the fixation between the female head 1 and the male head 7.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A power supply connector for live-line work on an electrical cabinet, characterized in that, include: The female head (1) has a sealing block (2), a mounting cylinder (3) and a wire (4) installed inside. Multiple sets of placement grooves (18) are opened on the outer surface of the female head (1). Steel balls (20) and springs (21) are movably connected inside the placement grooves (18). The male connector (7) has an installation cylinder (8) and an electrical connecting rod (9) installed inside. A protective cover (12) is fixedly installed on the left side of the outer surface of the male connector (7). A permanent magnet ring (13) and a spring (14) are movably sleeved inside the protective cover (12). A fixing groove (19) is opened on the left side of the inner wall of the male connector (7). The steel ball (20) is adapted to be snapped into the fixing groove (19). The two ends of the spring (14) are elastically connected to the inner wall of the permanent magnet ring (13) and the protective cover (12) respectively. Multiple sets of connecting grooves (15) are opened on the left side of the male connector (7). The female head (1) has multiple sets of slots (16) on its right side. The inner wall of the slots (16) is glued with rubber blocks (17). The rubber blocks (17) abut against the inner wall of the male head (7). The right end of the female head (1) is adapted to be inserted into the left end of the male head (7).

2. A power supply connector for live-line work on an electrical cabinet according to claim 1, characterized in that, The mounting cylinder 1 (3) is fixedly installed on the right side of the inner wall of the female head (1), the sealing block (2) is fixedly installed on the left side of the inner wall of the female head (1), the left side of the inner wall of the female head (1) is provided with an internal thread, the inner wall of the mounting cylinder 1 (3) is adapted to be inserted into two sets of connecting cylinders (5), the left side of the connecting cylinder (5) is provided with conductor 1 (6), the conductor 1 (6) is electrically connected to wire 1 (4), the electric connecting rod (9) is adapted to be inserted into the connecting cylinder (5), the electric connecting rod (9) and conductor 2 (10) are welded and fixed, the right side of conductor 2 (10) is electrically connected to wire 2 (11).

3. A power supply connector for live-line work on an electrical cabinet according to claim 2, characterized in that, The first wire (4), the connecting cylinder (5), the electrical connecting rod (9), the second conductor (10), and the second wire (11) are all arranged in two sets symmetrically distributed front and back. The left side of the first mounting cylinder (3) and the right side of the second mounting cylinder (8) are provided with isolation protrusions. The left side of the connecting cylinder (5) is fixedly connected with a connecting piece (51). The two sets of connecting pieces (51) are isolated by one set of isolation protrusions, and the two sets of second conductors (10) are isolated by another set of isolation protrusions.

4. A power supply connector for live-line work on an electrical cabinet according to claim 3, characterized in that, The mounting cylinder (3) has two sets of adapter cavities (22) on its left side. The connecting cylinder (5) is fixedly installed inside the adapter cavity (22). The surface of the connecting piece (51) and the right end of the mounting cylinder (3) are both provided with positioning grooves (23). The right side of the conductor (6) is fixedly connected with a positioning pin (24). The positioning pin (24) is adapted to be inserted into the positioning groove (23).

5. A power supply connector for live-line work on an electrical cabinet according to claim 4, characterized in that, The protective cover (12) has an "L" shaped cross section, and the permanent magnet ring (13) is adapted to be installed between the protective cover (12) and the female head (1).

6. A power supply connector for live-line work on an electrical cabinet according to claim 5, characterized in that, The axial cross-section of the connecting groove (15) is "L" shaped, the area of ​​the connecting groove (15) is smaller than the area of ​​the rubber block (17), and the connecting groove (15) is completely covered by the rubber block (17).

7. A power supply connector for live-line work on an electrical cabinet according to claim 6, characterized in that, The axial cross-section of the fixed groove (19) is semi-circular, and the steel ball (20) is stuck inside the fixed groove (19) under the magnetic attraction of the permanent magnet ring (13).

8. A power supply connector for live-line work on an electrical cabinet according to claim 7, characterized in that, One end of the second spring (21) is elastically connected to the inner wall of the placement groove (18), and the other end of the second spring (21) is elastically connected to the steel ball (20). The second spring (21) is always in a stretched state.

9. A power supply connector for live-line work on an electrical cabinet according to claim 8, characterized in that, The minimum number of the placement slots (18), fixing slots (19) and steel balls (20) is set to eight sets, and the multiple sets of placement slots (18), fixing slots (19) and steel balls (20) are distributed equidistantly around the axis of the female head (1).

10. A power supply connector for live-line work on an electrical cabinet according to claim 9, characterized in that, When the permanent magnet ring (13) and the steel ball (20) are staggered and lose their magnetic attraction, the steel ball (20) is pulled into the inner wall of the placement groove (18) by the action of the second spring (21). At this time, the steel ball (20) is completely inserted into the inner wall of the placement groove (18). The female head (1) and the male head (7) are in an interference fit. Multiple sets of water discharge grooves (25) are opened on the right side of the inner wall of the connecting groove (15).

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