A kind of electric power supply safety plug device

Abstract

This invention discloses a safe plug-in device for power supply, relating to the field of power equipment technology. It includes a base plate, a middle shell connected to the top of the base plate, and an upper shell connected to the top of the middle shell. Limiting rails are symmetrically fixedly connected to the top of the middle shell near its front and rear edges. A rectangular opening is formed at the center of the top of the middle shell. This safe plug-in device exhibits excellent performance during short circuits. During a short circuit, the temperature of the conductive plate and conductive post rises sharply. The lead post, due to its low melting point and thin middle section, is easily broken. At this time, the quartz fiber mesh loosens, and the push roller, under the spring force, restores the quartz fiber mesh to tension, pulling the conductive plate downwards and separating it from the conductive post, thus disconnecting the circuit and preventing fire. This effectively solves the problems of easy combustion and leakage during short circuits in existing plug-in devices, eliminating safety hazards, improving the safety of power use, providing users with reliable power protection, and reducing the risk of accidents caused by short circuits.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, in particular to a safe plugging device for electric power supply. Background Art

[0002] Power equipment mainly includes two categories: power generation equipment and power supply equipment. Power generation equipment mainly includes power station boilers, steam turbines, gas turbines, water turbines, generators and transformers, etc. Power supply equipment mainly includes transmission lines, mutual inductors and contactors of various voltage levels, etc. Power supply plug devices are required in power equipment.

[0003] In the prior art, for example, in the Chinese patent publication number: CN112397940A, a safe power supply plug device for electric equipment is disclosed, including a wall, a socket is fixedly installed at the middle end of the right side of the wall, a card slot is provided at both the upper and lower ends of the right side of the socket, a plug slot is provided at the middle end of the right side of the socket, a transmission box is arranged on the right side of the wall, a motor is fixedly installed on the right side of the transmission box, and a screw is fixedly connected to the output end of the motor. The invention drives the screw to rotate through the output end of the motor, and the screw drives the screw sleeve to move to the left side while the screw rotates. The screw sleeve drives the first vertical plate to move to the left side through the support rod, the first vertical plate drives the box to move to the left side, the box drives the card block to be connected to the inner cavity of the card slot, and the second vertical plate is extended by the electric telescopic rod to move to the left side, and the second vertical plate drives the plug to move to the left side and plug in the inner cavity of the plug slot, thereby solving the problem that the stability of the existing power supply plug device is not ideal and it is not convenient for people to use.

[0004] Although the above patent solves the problem that the existing power supply plug device is not stable and inconvenient for people to use, when a short circuit occurs during use, the existing power supply safety plug device has no internal power-off protection mechanism and needs to rely entirely on external power-off protection equipment. During the short circuit process, high temperature will be instantly generated and combustion will occur. Before the external power-off protection equipment is triggered, the inside of the plug device will not only burn but also be energized, which poses a great safety hazard when handling.

[0005] Therefore, we propose a power supply safety plug device to solve the problems raised in the above background technology. Summary of the invention

[0006] The object of the present invention is to provide an electric power supply safety plug device to solve the problem that when a short circuit occurs during use of the electric power supply safety plug device proposed in the above background technology, there is no internal power-off protection mechanism and it is necessary to rely entirely on an external power-off protection device. During the short circuit, high temperature will be instantly generated and combustion will occur. Before the external power-off protection device is triggered, the inside of the plug device will not only burn but also be energized, posing a great safety hazard when handling.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a power supply safety plug device, comprising a bottom plate, a middle shell connected to the top of the bottom plate, an upper shell connected to the top of the middle shell, a limited position rail symmetrically fixedly connected to the top of the middle shell near the front and rear side edges, a rectangular opening is opened at the center of the top of the middle shell, a circular opening is opened at the center of the top of the upper shell, and sockets are symmetrically opened at the top of the upper shell located on both sides of the circular opening, and a sliding groove is opened at the top of the upper shell near the edge, a power-on component is arranged on the top of the bottom plate for conduction, including a conductive plate, three lead columns supporting the conductive plate are fixedly connected to the bottom of the conductive plate, and a shrinkage groove is opened on the outer surface of the lead column near the middle position, the lead column is fixedly connected to the top center of the bottom plate and the three lead columns are distributed in a triangular shape, the number of pulling components is set to two, and they are symmetrically arranged on both sides of the power-on component for pulling the conductive plate downward, the connecting component is arranged above the upper shell, the fixing component is arranged at the top of the middle shell for fixing the connecting component, and the ejecting component is arranged at the top of the middle shell for assisting in removing the connecting component.

[0008] Preferably, the pulling assembly includes a rotating sleeve, a rotating frame and two pressure rollers, the rotating sleeve is rotatably connected to a position on the outer surface of the conductive plate near the edge, the pressure roller is rotatably connected between the front and rear inner walls of the middle shell, the rotating frame is arranged between the two pressure rollers, and a push roller is rotatably connected between the inner walls of the rotating frame.

[0009] Preferably, a quartz fiber mesh is sewn and connected to the outer surface of one side of the rotating sleeve, the outer surface of the quartz fiber mesh passes under the two pressure rollers and over the push roller, and the outer end of the quartz fiber mesh is fixedly connected to the top of the bottom plate.

[0010] Preferably, a first telescopic rod is fixedly connected to the bottom center of the rotating frame, and a first spring is symmetrically fixedly connected to the bottom of the rotating frame near the front and rear side edges, and the first telescopic rod and the first spring are both fixedly connected to the top of the bottom plate to push the rotating frame upward.

[0011] Preferably, the connecting assembly includes a connecting seat, the bottom of the connecting seat is fitted with the top of the upper shell, a circular limit sleeve is fixedly connected at the bottom center of the connecting seat, and the circular limit sleeve passes through the circular mouth and the opening, a conductive column is slidably connected between the inner surface walls of the circular limit sleeve, the conductive column and the conductive plate are in conflict, and a second spring is fixedly connected between the top of the conductive column and the bottom of the connecting seat.

[0012] Preferably, the fixing assembly includes two connecting strips, which are respectively slidably embedded between the inner walls of the two limit rails, and two second buckles are fixedly connected between the outer surfaces of the two connecting strips. A connecting rod is fixedly connected between the outer surfaces of the two connecting strips near the right edge, and a lever is fixedly connected to the top of the connecting rod, and the top of the lever passes through the sliding groove and extends upward.

[0013] Preferably, a second telescopic rod is fixedly connected to the left surface of one of the second clips, a third spring is sleeved on the outside of the second telescopic rod, the left end of the second telescopic rod is fixedly connected to the left inner wall of the middle shell, and when the second telescopic rod and the third spring are in an extended state, the two second clips are respectively located below the two sockets.

[0014] Preferably, a first buckle extending downward is fixedly connected to the bottom of the connecting seat near both side edges, and the bottom end of the first buckle passes through the socket and is engaged with the second buckle.

[0015] Preferably, the pop-up assembly is composed of a plurality of fourth springs and a movable plate, and the number of the pop-up assemblies is set to two, and the two movable plates are respectively located on the right sides of the two second buckles.

[0016] Preferably, the movable plate is slidably connected between the outer surfaces of the two limit rails, the two ends of the plurality of fourth springs are respectively fixedly connected to the bottom of the movable plate and the top of the middle shell, and the top of the movable plate is in conflict with the bottom of the first buckle.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the electric power supply safety plug device shows excellent performance during short circuit. During short circuit, the temperature of the conductive plate and the conductive column rises suddenly. The lead column is easy to break due to its low melting point and thinness in the middle. At this time, the quartz fiber mesh is loosened, and the push roller makes the quartz fiber mesh tight again under the thrust of the spring, pulls the conductive plate down and separates it from the conductive column, disconnects the circuit to avoid fire, effectively solves the problem of easy combustion and leakage during short circuit in the existing plug device, eliminates safety hazards, improves the safety of electricity use, provides users with reliable power protection, and reduces the risk of accidents caused by short circuit.

[0018] 2. When the present invention is used, the electric power supply safety plug-in device has significant advantages. When in use, the first buckle at the bottom of the connecting seat is aligned with the socket and inserted, and the inclined surfaces of the engaging ends of the first buckle and the second buckle collide with each other to generate an oblique thrust, which prompts the relevant structure to move and squeeze the spring to contract. After the engagement is completed, the spring rebounds and pushes the structure to reset, thereby achieving a firm fixation of the connecting seat. Compared with traditional plug-in devices that use friction force to engage, the present device has better firmness and reliability, which greatly ensures the stability and safety of the power supply of the power equipment, improves the quality of power transmission, and brings users an efficient and safe power experience.

[0019] 3. The electric power supply safety plug-in device of the present invention shows many significant advantages during use. When it is necessary to unplug the plug, it is only necessary to pull the lever in the sliding groove to the left. The lever drives the two connecting strips and the second buckle to move to the left through the connecting rod, so that the second buckle is quickly separated from the first buckle, and the fixation of the first buckle at the bottom of the connecting seat is easily released. During the insertion of the first buckle, the movable plate will be pressed downward, causing the fourth spring under the movable plate to shrink. Once the first buckle loses its fixation, the fourth spring will rebound and push the first buckle and the connecting seat upward to a certain distance through the movable plate. At this time, the first buckle and the second buckle are staggered up and down, and then the connecting seat can be directly removed upward, and the entire disassembly and assembly process is extremely convenient. This convenient operation method greatly improves the practicality of the device, brings an efficient and convenient experience to users in daily use, and effectively improves the efficiency and safety of electric power supply plug-in. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of a power supply safety plug device of the present invention; Figure 2 A cross-sectional view of a power supply safety plug device of the present invention; Figure 3 An exploded view of an electric power supply safety plug device of the present invention; Figure 4 This is a schematic diagram of the shell structure of a power supply safety plug device of the present invention; Figure 5 This is a schematic diagram of the structure of the power supply components of a power supply safety plug device of the present invention; Figure 6 It is a schematic diagram of the structure of a pulling component of a power supply safety plug device of the present invention; Figure 7 This is a schematic diagram of the structure of a connection component of a power supply safety plug device of the present invention; Figure 8 This is a schematic diagram of the structure of a fixing component of a power supply safety plug device of the present invention; Fig. 9 The present invention is a schematic diagram of the structure of a pop-up component of an electric power supply safety plug device.

[0021] In the figure: 1, bottom plate; 11, middle shell; 12, opening; 13, limit rail; 14, upper shell; 15, socket; 16, circular opening; 17, sliding groove; 2, power supply component; 201, conductive plate; 202, lead column; 203, contraction groove; 3, pulling component; 301, rotating sleeve; 302, pressure roller; 303, push roller; 304, rotating frame; 305, first spring; 306, first telescopic rod; 307, first telescopic rod; 308, first telescopic rod; 309, first telescopic rod; 310, first telescopic rod; 311, first telescopic rod; 312, first telescopic rod; 313, first telescopic rod; 314, first telescopic rod; 315, first telescopic rod; 316, first telescopic rod; 317, first telescopic rod; 318, first telescopic rod; 319, first telescopic rod; 320, first telescopic rod; 321, first telescopic rod; 322, first telescopic rod; 323, first telescopic rod; 324, first telescopic rod; 325, first telescopic rod; 326, first telescopic rod; 327, first telescopic rod; 328, first telescopic rod; 329, first telescopic rod; 330, first telescopic rod; 331, first telescopic rod; 332, first telescopic rod; 333, first telescopic rod; 334, first telescopic rod; 335, first telescopic rod; 336, first telescopic rod; 337, first telescopic rod; 338, first telescopic rod; 339, first telescopic rod; 340, first telescopic rod; 341, first telescopic rod; 342, first telescopic rod; 343, first 07. Quartz fiber mesh; 4. Connecting assembly; 401. Connecting seat; 402. Circular limiting sleeve; 403. Conductive column; 404. Second spring; 405. First buckle; 5. Fixing assembly; 501. Connecting strip; 502. Second buckle; 503. Connecting rod; 504. Push rod; 505. Second telescopic rod; 506. Third spring; 6. Pop-up assembly; 601. Movable plate; 602. Fourth spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-Figure 9As shown, the present invention provides a technical solution: a power supply safety plug device, comprising a bottom plate 1, a middle shell 11 is connected to the top of the bottom plate 1, an upper shell 14 is connected to the top of the middle shell 11, a limited position rail 13 is symmetrically fixedly connected to the top of the middle shell 11 near the front and rear side edges, a rectangular opening 12 is opened at the center of the top of the middle shell 11, a circular opening 16 is opened at the center of the top of the upper shell 14, sockets 15 are symmetrically opened at the top of the upper shell 14 at both sides of the circular opening 16, a sliding groove 17 is opened at the top of the upper shell 14 near the edge, and a power supply component 2 is arranged on the top of the bottom plate 1 for conducting electricity, including a conductive plate 201, a conductive plate 201 The bottom of the bottom plate 1 is fixedly connected with three lead columns 202 supporting the conductive plate 201. The outer surface of the lead column 202 is provided with a contraction groove 203 near the middle. The lead column 202 is fixedly connected to the top center of the bottom plate 1 and the three lead columns 202 are distributed in a triangle. The number of the pulling components 3 is set to two and they are symmetrically arranged on both sides of the power-on component 2 for pulling the conductive plate 201 downward. The connecting component 4 is arranged above the upper shell 14. The fixing component 5 is arranged on the top of the middle shell 11 for fixing the connecting component 4. The ejecting component 6 is arranged on the top of the middle shell 11 for assisting in removing the connecting component 4. The pulling component 3 includes a rotating sleeve 301, a rotating frame 304 and two pressing rollers 30 2, the rotating sleeve 301 is rotatably connected to the outer surface of the conductive plate 201 near the edge, the pressure roller 302 is rotatably connected between the front and rear inner surface walls of the middle shell 11, the rotating frame 304 is set between the two pressure rollers 302, and the inner surface walls of the rotating frame 304 are rotatably connected with a push roller 303. A quartz fiber mesh 307 is sewn and connected to the outer surface of one side of the rotating sleeve 301. The outer surface of the quartz fiber mesh 307 passes under the two pressure rollers 302 and over the push roller 303. The outer end of the quartz fiber mesh 307 is fixedly connected to the top of the bottom plate 1, and the first telescopic rod 306 is fixedly connected to the bottom center of the rotating frame 304. The bottom of the rotating frame 304 is close to The first spring 305 is symmetrically fixedly connected at the front and rear side edges, the first telescopic rod 306 and the first spring 305 are fixedly connected to the top of the base plate 1 for pushing the rotating frame 304 upward, the connecting assembly 4 includes a connecting seat 401, the bottom of the connecting seat 401 is in contact with the top of the upper shell 14, a circular limiting sleeve 402 is fixedly connected to the bottom center of the connecting seat 401, and the circular limiting sleeve 402 passes through the circular opening 16 and the opening 12, a conductive column 403 is slidably connected between the inner surface wall of the circular limiting sleeve 402, the conductive column 403 is in conflict with the conductive plate 201, and a second spring 404 is fixedly connected between the top of the conductive column 403 and the bottom of the connecting seat 401.

[0024] In this embodiment, the connection seat 401 and the conductive column 403 in the device form a plug for the power supply device, the bottom plate 1, the middle shell 11, the upper shell 14 and the power supply component 2 form a socket for the power supply device, the conductive column 403 is electrically connected to the power device above the connection seat 401 through the line, and the conductive plate 201 is electrically connected to the power device outside the middle shell 11 through the line. After the connection seat 401 in the plug and the upper shell 14 in the socket are connected, the slide groove on the inner wall of the circular limiting sleeve 402 and the circular conductive column 403 are connected. The slider on the outer wall allows the conductive column 403 to move up and down for a certain distance, and the elastic force generated by the second spring 404 on the top of the conductive column 403 pushes the conductive column 403 downward. Therefore, after the plug and the socket are connected, the bottom end of the conductive column 403 will fit tightly with the top of the conductive plate 201, thereby completing the connection and power supply operation of the power equipment. When a short circuit occurs in the plug device, due to the high thermal conductivity efficiency of the conductive circuit and the material, the temperature of the conductive plate 201 and the conductive column 403 will instantly rise to above 400°C. The lead column 202 supporting the conductive plate 201 has a melting point of 327.5°C, and the diameter of the contraction groove 203 in the middle of the lead column 202 is relatively thin, so the lead column 202 will be quickly disconnected during the short circuit process. At this time, the quartz fiber mesh 307 connected to the two ends of the conductive plate 201 by the rotating sleeve 301 may become loose, and the push roller 303 on the rotating frame 304 will quickly push the contact area of ​​the quartz fiber mesh 307 by relying on the thrust generated by the first spring 305 below during the loosening of the quartz fiber mesh 307. The quartz fiber mesh 307 rises upward and restores its tensioned state. At this time, the re-tightened quartz fiber mesh 307 will pull the conductive plate 201 downward for a distance and then separate from the conductive column 403, thereby disconnecting the circuit to avoid fire. This solves the problem that the existing plug-in device is prone to combustion and accompanied by current when short-circuited, and eliminates safety hazards. The pressure roller 302 mainly guides the quartz fiber mesh 307, thereby ensuring that the push roller 303 in the middle position can lift up the quartz fiber mesh 307 when moving upward.

[0025] Embodiment 2: Figure 1-Figure 4 and Figure 8As shown, the fixing assembly 5 includes two connecting strips 501, and the two connecting strips 501 are respectively slidably embedded between the inner surface walls of the two limit rails 13, and two second buckles 502 are fixedly connected between the outer surfaces of the two connecting strips 501. A connecting rod 503 is fixedly connected between the outer surfaces of the two connecting strips 501 near the right edge, and a lever 504 is fixedly connected to the top of the connecting rod 503. The top of the lever 504 passes through the sliding groove 17 and extends upward. The left surface of one of the second buckles 502 is fixedly connected to the second buckle 502. Two telescopic rods 505, the outer sleeve of the second telescopic rod 505 is provided with a third spring 506, the left end of the second telescopic rod 505 is fixedly connected to the left inner wall of the middle shell 11, and when the second telescopic rod 505 and the third spring 506 are in the extended state, the two second buckles 502 are respectively located below the two sockets 15, and the bottom of the connecting seat 401 near the two side edges is fixedly connected with the first buckle 405 extending downward, and the bottom end of the first buckle 405 passes through the socket 15 and is engaged with the second buckle 502.

[0026] When the second clip 502 and the third spring 506 are engaged, the third spring 506 loses its extrusion and rebounds, which pushes the second clip 502 and the related structures to reset, thereby completing the fixation of the connecting seat 401. Compared with the traditional plug-in device that uses friction to plug and connect, this plug-in device has excellent firmness and reliability, ensuring the stability and safety of plug-in power supply of the power equipment.

[0027] Embodiment 3: Figure 2 , Figure 3 and Fig. 9 As shown, the pop-up component 6 is composed of a plurality of fourth springs 602 and a movable plate 601, and the number of the pop-up components 6 is set to two, the two movable plates 601 are respectively located on the right side of the two second buckles 502, the movable plate 601 is slidably connected between the outer surfaces of the two limit rails 13, the two ends of the plurality of fourth springs 602 are respectively fixedly connected to the bottom of the movable plate 601 and the top of the middle shell 11, and the top of the movable plate 601 is in conflict with the bottom of the first buckle 405.

[0028] In this embodiment, when in use, when it is necessary to unplug the plug, the lever 504 in the sliding groove 17 is pulled to the left. At this time, the lever 504 will drive the two connecting strips 501 and the two second buckles 502 to move to the left through the connecting rod 503. When the second buckle 502 is disengaged from the first buckle 405, the fixation of the first buckle 405 at the bottom of the connecting seat 401 can be released. During the insertion process, the first buckle 405 will be pressed downward to the movable plate 601 and cause the fourth spring 602 under the movable plate 601 to shrink. Therefore, after the first buckle 405 loses its fixation, the fourth spring 602 will rebound and push the first buckle 405 and the connecting seat 401 to move upward for a distance through the movable plate 601. At this time, the first buckle 405 will be staggered up and down with the second buckle 502, and then the connecting seat 401 can be directly removed upward, which is convenient for disassembly and assembly, thereby improving the practicality of the device.

[0029] The effect and working principle achieved by the entire mechanism are as follows: the connection seat 401 and the conductive column 403 in the device form a plug for the power supply device, the bottom plate 1, the middle shell 11, the upper shell 14 and the power-on component 2 form a socket for the power supply device, the conductive column 403 is electrically connected to the power device above the connection seat 401 through the line, and the conductive plate 201 is electrically connected to the power device outside the middle shell 11 through the line. When in use, align the first buckle 405 at the bottom of the connection seat 401 with the socket 15 at the top of the upper shell 14 and insert it downward. At this time, the inclined surface of the engaging end of the first buckle 405 and the inclined surface of the engaging end of the second buckle 502 on the inner side of the upper shell 14 will collide to form an oblique thrust. At this time, the connecting strip 501 connected to the second buckle 502 is limited. The second clip 502, the connecting strip 501, the connecting rod 503 and the lever 504 can move to the left and squeeze the second telescopic rod 505 and the third spring 506 to contract. When the second clip 502 and the first clip 405 are engaged, the third spring 506 loses its extrusion and rebounds, which pushes the second clip 502 and related structures to reset, thereby completing the fixation of the connecting seat 401. Compared with the traditional plug-in connection method using friction force, the plug-in device has excellent firmness and reliability, ensuring the stability and safety of the power supply of the power equipment. In addition, when it is necessary to unplug the plug, pull the lever 504 in the sliding slot 17 to the left, and the lever 504 will be pulled out. The connecting rod 503 drives the two connecting strips 501 and the two second buckles 502 to move leftward. When the second buckle 502 is separated from the first buckle 405, the fixation of the first buckle 405 at the bottom of the connecting seat 401 can be released. During the insertion process, the first buckle 405 will be pressed downward to the movable plate 601 and cause the fourth spring 602 under the movable plate 601 to shrink. Therefore, after the first buckle 405 loses its fixation, the fourth spring 602 will rebound and push the first buckle 405 and the connecting seat 401 to move upward for a distance through the movable plate 601. At this time, the first buckle 405 will be staggered up and down with the second buckle 502, and then the connecting seat 401 can be directly removed upward, which is convenient for disassembly and assembly, thereby improving the practicality of the device. After the connection base 401 and the upper shell 14 in the socket are connected, the sliding groove on the inner wall of the circular limiting sleeve 402 and the slider on the outer wall of the circular conductive column 403 allow the conductive column 403 to move up and down for a distance, and the elastic force generated by the second spring 404 on the top of the conductive column 403 will push the conductive column 403 downward, so that after the plug and the socket are connected, the bottom end of the conductive column 403 will fit tightly with the top of the conductive plate 201, thereby completing the connection and power supply operation of the power equipment. When a short circuit occurs in the plug device, due to the high thermal conductivity efficiency of the conductive circuit and the material, the temperature of the conductive plate 201 and the conductive column 403 will instantly rise to above 400°C, and the melting point of the lead column 202 supporting the conductive plate 201 is 327.5°C, and the diameter of the contraction groove 203 in the middle of the lead column 202 is relatively thin, so the lead column 202 will be quickly disconnected during the short circuit process. At this time, the quartz fiber mesh 307 that is rotatably connected to the two ends of the conductive plate 201 through the rotating sleeve 301 may become loose, and the push roller 303 on the rotating frame 304 will rely on the thrust generated by the first spring 305 below to quickly push the contact area of ​​the quartz fiber mesh 307 upward and restore the quartz fiber mesh 307 to a taut state during the loosening of the quartz fiber mesh 307. At this time, the re-tightened quartz fiber mesh 307 will pull the conductive plate 201 downward for a distance and then separate from the conductive column 403, thereby disconnecting the circuit to avoid fire, solving the problem that the existing plug-in device is prone to burning and accompanied by current when short-circuited, eliminating safety hazards. .

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power supply safety plug device, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is connected to a middle shell (11), the top of the middle shell (11) is connected to an upper shell (14), the top of the middle shell (11) is symmetrically fixedly connected to a limit rail (13) near the front and rear side edges, a rectangular opening (12) is provided at the center of the top of the middle shell (11), a circular opening (16) is provided at the center of the top of the upper shell (14), the top of the upper shell (14) is symmetrically provided with sockets (15) located at both sides of the circular opening (16), and a sliding groove (17) is provided at the top of the upper shell (14) near the edge; A power supply component (2) is arranged on the top of the bottom plate (1) for conducting electricity, comprising a conductive plate (201), the bottom of the conductive plate (201) being fixedly connected to three lead columns (202) for supporting the conductive plate (201), a contraction groove (203) being provided near the middle of the outer surface of the lead column (202), the lead column (202) being fixedly connected to the top center of the bottom plate (1), and the three lead columns (202) being distributed in a triangular shape; The number of the pulling components (3) is set to two, and they are symmetrically arranged on both sides of the power supply component (2), and are used to pull the conductive plate (201) downwards; The connection assembly (4) is arranged above the upper shell (14); The fixing component (5) is arranged on the top of the middle shell (11) and is used to fix the connecting component (4); The ejection assembly (6) is arranged on the top of the middle shell (11) to assist in removing the connection assembly (4).

2. The power supply safety plug device according to claim 1, characterized in that: The pulling assembly (3) comprises a rotating sleeve (301), a rotating frame (304) and two pressure rollers (302); the rotating sleeve (301) is rotatably connected to a position on the outer surface of the conductive plate (201) near the edge; the pressure rollers (302) are rotatably connected between the front and rear inner surface walls of the middle shell (11); the rotating frame (304) is arranged between the two pressure rollers (302); and a push roller (303) is rotatably connected between the inner surface walls of the rotating frame (304).

3. The power supply safety plug device according to claim 2, characterized in that: A quartz fiber mesh (307) is sewn and connected to the outer surface of one side of the rotating sleeve (301), the outer surface of the quartz fiber mesh (307) passes below the two pressure rollers (302) and above the push roller (303), and the outer end of the quartz fiber mesh (307) is fixedly connected to the top of the bottom plate (1).

4. The power supply safety plug device according to claim 3, characterized in that: A first telescopic rod (306) is fixedly connected at the center of the bottom of the rotating frame (304), and a first spring (305) is symmetrically fixedly connected to the bottom of the rotating frame (304) near the front and rear side edges. The first telescopic rod (306) and the first spring (305) are both fixedly connected to the top of the bottom plate (1) for pushing the rotating frame (304) upwards.

5. The electric power supply safety plug device according to claim 4, characterized in that: The connection assembly (4) comprises a connection seat (401), the bottom of the connection seat (401) is fitted with the top of the upper shell (14), a circular limiting sleeve (402) is fixedly connected to the center of the bottom of the connection seat (401), and the circular limiting sleeve (402) passes through the circular opening (16) and the opening (12), a conductive column (403) is slidably connected between the inner surface wall of the circular limiting sleeve (402), the conductive column (403) and the conductive plate (201) are in conflict, and a second spring (404) is fixedly connected between the top of the conductive column (403) and the bottom of the connection seat (401).

6. The electric power supply safety plug device according to claim 5, characterized in that: The fixing assembly (5) comprises two connecting strips (501), the two connecting strips (501) are respectively slidably embedded between the inner surface walls of the two limit rails (13), two second buckles (502) are fixedly connected between the outer surfaces of the two connecting strips (501), a connecting rod (503) is fixedly connected between the outer surfaces of the two connecting strips (501) near the right edge, a shifting rod (504) is fixedly connected to the top of the connecting rod (503), and the top end of the shifting rod (504) passes through the sliding groove (17) and extends upward.

7. The electric power supply safety plug device according to claim 6, characterized in that: A second telescopic rod (505) is fixedly connected to the left surface of one of the second clips (502); a third spring (506) is sleeved on the outside of the second telescopic rod (505); a left end of the second telescopic rod (505) is fixedly connected to the left inner surface wall of the middle shell (11); when the second telescopic rod (505) and the third spring (506) are in an extended state, the two second clips (502) are respectively located below the two sockets (15).

8. The electric power supply safety plug device according to claim 7, characterized in that: The bottom of the connection seat (401) is fixedly connected to a first buckle (405) extending downward near both side edges, and the bottom end of the first buckle (405) passes through the socket (15) and is engaged with the second buckle (502).

9. The electric power supply safety plug device according to claim 8, characterized in that: The pop-up assembly (6) is composed of a plurality of fourth springs (602) and a movable plate (601), and the number of the pop-up assemblies (6) is set to two, and the two movable plates (601) are respectively located at the right sides of the two second buckles (502).

10. The electric power supply safety plug device according to claim 9, characterized in that: The movable plate (601) is slidably connected between the outer surfaces of the two limit rails (13), and the two ends of the plurality of fourth springs (602) are fixedly connected to the bottom of the movable plate (601) and the top of the middle shell (11), respectively, and the top of the movable plate (601) is in conflict with the bottom of the first buckle (405).

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