Rainproof automatic plugging plug

Abstract

The invention relates to a rainproof automatic plugging plug, and the plug comprises a plug body which is used for cooperating with a cable to be inserted into a charging seat of a ship for charging; the positioning sleeve is used for guiding the plug body to align to a charging seat of the ship; the lifting device is used for driving the positioning sleeve to lift; the connecting device is used for connecting the positioning sleeve and the plug body; and the rainproof cover is connected with the positioning sleeve through a connecting device, and when the plug body is inserted into the ship charging seat, the charging port of the ship is closed along with descending of the positioning sleeve. When the plug body is inserted into the charging seat of the ship, the rainproof cover closes the charging port at the charging seat of the ship so as to prevent external rainwater from entering the charging seat of the ship, and meanwhile, the rainproof cover is connected to the positioning sleeve, so that the rainproof cover and the ship synchronously ascend or descend, and the rainproof cover can always close the charging port of the ship for rain prevention; and the whole rainproof process is simple and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of charging plugs, and in particular to a rainproof automatic plug-in plug. Background Art

[0002] Ships require a large amount of electricity to maintain their operations while docked at ports. Since the traditional power supply through the ship's own fuel generator will produce a large amount of exhaust gas and pollute the port, ships now use shore power systems to supply power while docked at ports.

[0003] The traditional ship shore power system includes a shore-based power supply system, a ship-shore connection system and a shipboard power receiving system. The ship-shore connection system includes a shore-based power connection box, cables and plugs. The shore-based power connection box is connected to the shore-based power supply system. The shore-based power connection box and the shipboard power receiving system are connected by cables and plugs to charge the ship.

[0004] However, the fixed shore-based power boxes require ships to dock within a specified range to charge, while at flexible docks, the ship's docking position needs to be adjusted according to the hull length, unloading method, workload, docking time, etc., resulting in low compatibility between the traditional shore power system in the form of fixed charging piles that require docking in a fixed area to charge and the flexible dock, so a mobile shore power system was introduced.

[0005] The mobile shore power system includes an electric trolley and a power connection box. The electric trolley is designed in the form of a small crane. The steel cable of the original small crane is replaced by an electrical cable, and the hook at the end of the steel cable of the original small crane is replaced by a plug for charging. The power connection box is located inside the electric trolley, the shipboard power receiving device is located at the bridge, and the charging port is located at the top of the shipboard power receiving device in an upward opening shape.

[0006] After the ship is docked, the trolley drives to the side of the ship, and the telescopic arm rotates and extends to bring the plug to the top of the charging port. The cable is then extended and the plug is lowered to slide into the charging port. The shipboard power receiving device is provided with a guiding mechanism, through which the plug is plugged into the charging seat at the bottom of the charging port to start charging.

[0007] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: since the charging port is open upward, rainwater will enter the charging port on rainy days and cause a short circuit. Therefore, after the plug is plugged in, it is necessary to build additional rainproof and drainage facilities at the charging port to prevent rainy weather. In addition, due to the presence of cables and the change in height of the ship before and after unloading at the port, it is difficult to build rainproof and drainage measures, which makes the overall shore power connection more cumbersome. Summary of the invention

[0008] In order to solve the problem that the plug of a traditional mobile shore power system needs additional rainproof and drainage measures when charging in rainy weather, which makes charging more troublesome, the present application provides a rainproof automatic plug-in plug.

[0009] The present application provides a rainproof automatic plug-in plug adopts the following technical solution:

[0010] A rainproof automatic plug-in plug, comprising:

[0011] The plug body is used to cooperate with the cable to be inserted into the charging seat of the ship for charging;

[0012] A positioning sleeve, used to guide the plug body to align with the charging socket of the ship;

[0013] A lifting device, used for driving the positioning sleeve to rise and fall;

[0014] A connecting device, used to connect the positioning sleeve and the plug body, so that the plug body is inserted into the charging seat of the ship as the positioning sleeve descends or is pulled out from the charging seat of the ship as the positioning sleeve rises;

[0015] The rain cover is connected to the positioning sleeve through a connecting device. When the plug body is inserted into the ship charging seat, the positioning sleeve descends to close the charging port of the ship.

[0016] Through the above technical solution, when the plug body is inserted into the charging seat of the ship, the rain cover will then close the charging port at the charging seat of the ship to prevent outside rain from entering. At the same time, since the rain cover is connected to the positioning sleeve, the rain cover rises or falls synchronously with the ship, so that the rain cover can always close the charging port of the ship to prevent rain, and the overall rain protection process is relatively simple and convenient.

[0017] Optionally, the connecting device includes:

[0018] A connecting plate, provided on the plug body, used for mounting the plug body on the positioning sleeve;

[0019] A first magnet, disposed on the connecting plate;

[0020] A second magnet is disposed on the positioning sleeve and is used to cooperate with the first magnet to adsorb the plug body onto the positioning sleeve;

[0021] A connecting mechanism, used for connecting the rain cover to the guide sleeve when the plug body is adsorbed on the guide sleeve by the first magnet and the second magnet;

[0022] When the positioning sleeve rises, the plug body is pulled out from the charging port of the ship through the connecting plate.

[0023] Optionally, the connecting mechanism includes:

[0024] A first connecting rod, disposed on the positioning sleeve;

[0025] A second connecting rod is rotatably mounted on the inner wall of the rain cover;

[0026] A barb, provided at the end of the second connecting rod;

[0027] The first connecting rod is provided with a connecting groove that cooperates with the barb hook, and the second connecting rod can be rotated to set the barb hook in the connecting groove. A coil spring is provided at the rotating part of the second connecting rod. When the first magnet and the second magnet are attracted, the coil spring pushes the second connecting rod away from the first connecting rod. The rain cover is provided with a pushing component for pushing the second connecting rod to rotate until the barb hook is set in the connecting groove. A sealing ring is provided at the end face of the rain cover. The cable slides through the rain cover. When the positioning sleeve drops a specified distance, the pushing component pushes the The second connecting rod rotates until the barb enters the connecting groove, and when the positioning sleeve drops a fixed distance again, the barb is hooked in the connecting groove, and when the positioning sleeve guides the plug body to be inserted into the ship charging seat, the second connecting rod tightens the rain cover, and the rain cover presses the sealing ring against the plane at the ship charging port. The rain cover is provided with a sealing sleeve, and the sealing sleeve is used to form a seal between the rain cover and the cable when the rain cover is pressed against the plane at the ship charging port, and to form a sliding fit with the cable again when the rain cover is separated from the plane at the ship charging port.

[0028] Optionally, the pushing component includes:

[0029] A bracket, arranged on the inner wall of the rain cover;

[0030] A gear, rotatably mounted on the bracket;

[0031] Cam, coaxially arranged on the gear,

[0032] A rack, disposed on the top wall of the connecting plate and meshing with the gear;

[0033] The rack is slidably connected to the bracket, and the side wall of the cam is tightly pressed against the second connecting rod. When the positioning sleeve descends to the first specified distance, the rack drives the gear to rotate until the cam pushes the second connecting rod to rotate until the barb is located in the connecting groove, and the cam maintains the position of the second connecting rod during the process of the positioning sleeve descending to the second specified distance.

[0034] Optionally, the sealing ring has a tubular cross section, and the sealing sleeve comprises:

[0035] The mounting block is arranged on the rain cover and has a sliding hole extending therethrough. The cable slides through the sliding hole and has a mounting cavity therein;

[0036] A plurality of first sealing blocks are provided, which are slidably installed in the installation cavity and are used to fit tightly against cables to form a seal, and fit tightly against a top wall of the installation cavity and the installation block to form a seal;

[0037] The air bag is arranged in the installation cavity and connected to the sealing ring through an air pipe, and is used for pushing the first sealing block to slide.

[0038] Optionally, the mounting block is provided with a sealing tube, and the cable slides through the sealing tube. The first sealing block is provided with a second sealing block, and the second sealing block is used to fit tightly against the outer wall of the sealing tube and form a seal between the sealing tube.

[0039] Optionally, the first sealing block is connected to the airbag.

[0040] Optionally, a tension spring is provided between the rack and the bracket.

[0041] Optionally, the positioning sleeve is conical, a plurality of positioning frames are evenly distributed on the side wall of the plug body, a positioning wheel is rotatably mounted on one end of the positioning frame, and the positioning wheel is conical in shape to match the positioning sleeve.

[0042] Optionally, the lower end of the plug body is conical, and the lower end of the positioning sleeve is conical to match the conical lower end of the plug body. The side walls of the conical lower end of the plug body are evenly distributed with a number of vibration-damping heads. When the plug body is aligned and inserted into the positioning sleeve, the vibration-damping heads are all pressed against the inner wall of the positioning sleeve.

[0043] To summarize, the present application arranges a rain cover on the plug body, and then when the plug body is inserted into the charging socket of the ship, the rain cover is tightened and arranged at the charging port of the ship through the first connecting rod, the second connecting rod and the barb, so as to close the charging port of the ship. At the same time, a seal is formed between the rain cover and the plane at the charging port of the ship through a sealing ring, and a seal is formed between the rain cover and the cable through a sealing sleeve, thereby protecting the charging port of the ship from rain. The rain cover protects the charging port of the ship from rain simultaneously with the insertion of the plug body, and the overall rain protection is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a three-dimensional structural schematic diagram of this application.

[0045] Figure 2 It is an exploded schematic diagram of this application.

[0046] Figure 3 yes Figure 2 Enlarged schematic diagram of part A in the middle.

[0047] Figure 4 It is a three-dimensional structural schematic diagram of the connection mechanism of the present application, showing a part of the bracket.

[0048] Figure 5 It is a cross-sectional view of the connection mechanism of the present application.

[0049] Figure 6 It is an exploded schematic diagram of the sealing sleeve of the present application.

[0050] Figure 7 It is a cross-sectional view of the sealing sleeve of the present application.

[0051] Those skilled in the art will appreciate that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be exaggerated relative to other elements to help improve understanding of the embodiments of the present invention.

[0052] 1. Plug body; 11. Charging head; 12. Positioning frame; 13. Positioning wheel; 14. Vibration damping head; 2. Positioning sleeve; 21. Second magnet; 3. Lifting device; 31. Light rod; 32. Lifting cylinder; 4. Rain cover; 41. Sealing ring; 5. Connecting device; 51. Connecting plate; 52. First magnet; 6. Connecting mechanism; 61. First connecting rod; 611. Connecting groove; 62. Second connecting rod; 621. Barb; 7. Coil spring; 8. Pushing assembly; 81. Bracket; 82. Gear; 83. Cam; 84. Rack; 9. Sealing sleeve; 91. Mounting block; 911. Sliding hole; 912. Mounting cavity; 92. Sealing tube; 93. First sealing block; 94. Airbag; 95. Second sealing block; 10. Tension spring. DETAILED DESCRIPTION

[0053] The following is combined with Figure 1 —7 further describes this application in detail.

[0054] The present application embodiment discloses a rainproof automatic plug-in plug, referring to Figure 1 and Figure 2 , comprising a rectangular plug body 1, a positioning sleeve 2, a lifting device 3 for driving the positioning sleeve 2 to rise and fall, a rain cover 4 and a connecting device 5 for connecting the positioning sleeve 2 and the plug body 1.

[0055] Reference Figure 1The lifting device 3 includes four polished rods 31 fixedly installed in the charging port of the ship and two lifting cylinders 32. The polished rods 31 enclose the charging seat of the ship. The four polished rods 31 are all vertical, and the positioning sleeve 2 is slidably installed on the four polished rods 31. The piston rods of the two lifting cylinders 32 are vertically extended upward, and the piston rods of the lifting cylinders 32 are connected to the bottom wall of the positioning sleeve 2, which is used to drive the positioning sleeve 2 to slide and rise and fall.

[0056] The plug body 1 is fixedly connected to the cable of the charging cart of the shore power system. The bottom wall of the plug body 1 is provided with a plurality of charging heads 11 that cooperate with the ship's charging seat. When charging, the charging heads 11 are inserted into the ship's charging seat to transmit power to the ship.

[0057] Reference Figure 1 and Figure 2 The positioning sleeve 2 is conical, and a plurality of positioning frames 12 are evenly and fixedly installed on the side wall of the plug body 1. A positioning wheel 13 is rotatably installed at one end of the positioning frame 12. The positioning wheel 13 is conical and matched with the positioning sleeve 2. When the plug body 1 is fully inserted into the positioning sleeve 2, the positioning wheels 13 are pressed against the inner wall of the positioning sleeve 2. In the process of inserting the plug body 1 into the positioning sleeve 2, the positioning wheels 13 guide the plug body 1 to slide, so that the plug body 1 is not easily stuck on the positioning sleeve 2.

[0058] Reference Figure 1 and Figure 2 The connecting device 5 includes a connecting plate 51 fixedly mounted on the top wall of the plug body 1, a plurality of first magnets 52 fixedly mounted on the connecting plate 51, and a plurality of second magnets 21 fixedly mounted on the top wall of the positioning sleeve 2, and the first magnets 52 and the second magnets 21 correspond to each other. When the plug body 1 is inserted into the positioning sleeve 2, the plug body 1 and the connecting plate 51 are adsorbed on the top wall of the positioning sleeve 2 through the mutual cooperation between the first magnets 52 and the second magnets 21, and at this time, the connecting plate 51 is mounted on the top wall of the positioning sleeve 2.

[0059] Reference Figure 1 and Figure 2 The lower end of the plug body 1 is conical, the lower end of the positioning sleeve 2 is conical to match the conical lower end of the plug body 1, and a plurality of vibration-damping heads 14 are evenly distributed and fixed on the side wall of the conical lower end of the plug body 1. When the plug body 1 is fixed on the positioning sleeve 2 by the adsorption between the first magnet 52 and the second magnet 21, the vibration generated during the adsorption is absorbed by the vibration-damping head 14, so that the first magnet 52, the second magnet 21 and the plug body 1 are not easily damaged by vibration.

[0060] During charging, after the plug body 1 is inserted into the positioning sleeve 2, the two lifting cylinders 32 are started to drive the positioning sleeve 2 to descend, and then the plug body 1 is driven to descend through the first magnet 52 and the second magnet 21 until the charging head 11 is inserted into the charging seat one by one, completing the connection between the shore power and the ship.

[0061] Reference Figure 1 and Figure 2 The rain cover 4 is used to seal the charging port of the ship after the plug body 1 is connected to the charging seat of the ship, so that rainwater from the outside is not easy to enter the charging port and cause a short circuit. The connecting device 5 also includes a connecting mechanism 6, which is used to connect the rain cover 4 and the guide sleeve when the plug body 1 is adsorbed on the guide sleeve through the first magnet 52 and the second magnet 21, so that the rain cover 4 covers and seals the charging port of the ship as the plug body 1 descends.

[0062] Reference Figure 1 , Figure 2 and Figure 5 The connecting mechanism 6 includes a first connecting rod 61 fixedly mounted on the top wall of the positioning sleeve 2 and a second connecting rod 62 rotatably mounted on the inner wall of the rain cover 4. The end of the second connecting rod 62 is integrally provided with a barb 621, and the side wall of the first connecting rod 61 is provided with a connecting groove 611 that cooperates with the barb 621.

[0063] Reference Figure 1 , Figure 2 and Figure 5 , the second connecting rod 62 can be rotated to hook the barb 621 in the connecting groove 611. At the same time, a coil spring 7 is provided at the rotating part of the second connecting rod 62, and the two ends of the coil spring 7 are respectively fixedly connected to the second connecting rod 62 and the inner wall of the rain cover 4. In the initial state, the coil spring 7 pushes the second connecting rod 62 to separate from the first connecting rod 61.

[0064] Reference Figure 3 and Figure 4 A pushing assembly 8 is provided in the rain cover 4 for pushing the second connecting rod 62 to rotate and hook the hook 621 in the connecting groove 611. The pushing assembly 8 includes a bracket 81 fixedly installed in the rain cover 4. The bracket 81 is rotatably installed with a gear 82. The gear 82 is coaxially fixed with a cam 83. A vertical rack 84 is fixedly provided on the top wall of the connecting plate 51. The rack 84 is slidably connected to the bracket 81, and the rack 84 is meshed with the gear 82.

[0065] Reference Figure 3 and Figure 4, the side wall of the second connecting rod 62 is pressed against the side wall of the cam 83, the cable slides through the rain cover 4, the connecting plate 51 is provided with a connecting port, and the first connecting rod 61 passes through the connecting port and is located in the rain cover 4. When the positioning sleeve 2 drives the plug body 1 and the connecting plate 51 to descend, the rain cover 4 is mounted on the plane of the ship charging port, so that the rack 84 slides in the direction away from the rain cover 4, and as the rack 84 descends, it drives the gear 82 and the cam 83 to rotate, and then the cam 83 pushes the second connecting rod 62 to rotate toward the first connecting rod 61. When the positioning sleeve 2 descends a specified distance, the second connecting rod 62 rotates until the barb 621 is located in the connecting groove 611, and then as the positioning sleeve 2 continues to descend, the cam 83 maintains the position of the second connecting rod 62 until the positioning sleeve 2 continues to descend a specified distance, and the barb 621 is hooked in the connecting groove 611.

[0066] Reference Figure 2 , Figure 3 and Figure 4 The end surface of the cover opening of the rain cover 4 is fixedly mounted with a rubber sealing ring 41, and the cross section of the sealing ring 41 is tubular. As the barb 621 is hooked in the connection groove 611, the positioning sleeve 2 continues to descend until the charging head 11 is inserted into the charging port and stops. At this time, the positioning sleeve 2 pulls the second connecting rod 62 and the rain cover 4 against the plane of the ship charging port through the barb 621, and the rain cover 4 presses the sealing ring 41, so that a seal is formed between the rain cover 4 and the plane of the ship charging port.

[0067] Reference Figure 2 , Figure 6 and Figure 7 A sealing sleeve 9 is fixedly provided at the place where the rain cover 4 and the cable slide. The sealing sleeve 9 includes a rectangular mounting block 91. A sliding hole 911 is opened through the middle of the mounting block 91. A mounting cavity 912 is provided in the mounting block 91. The sliding hole 911 passes through the middle of the mounting cavity 912. A sealing tube 92 is coaxially provided on the mounting block 91 with the sliding hole 911. The cable slides through the sliding hole 911 and the sealing tube 92.

[0068] Reference Figure 2 , Figure 6 and Figure 7 A first sealing block 93 made of rubber is slidably installed on both sides of the sliding hole 911 in the installation cavity 912, and an air bag 94 is also provided at both ends of the installation cavity 912. The air bag 94 is fixedly connected to the first sealing block 93, and the air bag 94 is connected to the sealing ring 41 through the air pipe. When the sealing ring 41 is pressed tightly by the rain cover 4, the air in the sealing ring 41 enters the air bag 94 along the air pipe, and the air bag 94 expands and pushes the first sealing block 93 to fit tightly against the side wall of the cable to surround the cable, so that a seal is formed between the first sealing block 93 and the side wall of the cable.

[0069] Reference Figure 2 , Figure 6 and Figure 7 A second sealing block 95 is also integrally provided on the top wall of the first sealing block 93. When the first sealing block 93 is pressed against the side wall of the cable, the two second sealing blocks 95 are pressed against the sealing tube 92 to surround the sealing tube 92. At the same time, the top wall of the second sealing block 95 is pressed against the top wall of the installation cavity 912 to form a seal.

[0070] The sealing sleeve 9 forms a seal between the rain cover 4 and the cable, so that rain water from the outside is not easy to leak from the connection between the rain cover 4 and the cable.

[0071] When the ship is docked, the lifting cylinder 32 pushes the positioning sleeve 2 to rise, the rain cover 4 is separated from the plane at the ship's charging port, the gas in the airbag 94 returns to the sealing ring 41, the airbag 94 shrinks, the first sealing block 93 and the second sealing block 95 are separated from the cable, and the sliding fit between the rain cover 4 and the cable is restored. Under the action of the rain cover 4's own gravity, the bracket 81 slides toward the connecting plate 51, thereby driving the gear 82 and the cam 83 to rotate to reset. During the resetting process of the cam 83, the barb 621 separates from the connecting groove 611 as the positioning sleeve 2 rises. After the barb 621 separates from the connecting groove 611, the coil spring 7 pushes the second connecting rod 62 to rotate in the direction away from the first connecting rod 61 until it is reset. When the positioning sleeve 2 rises to the initial height, the plug body 1 and the connecting plate 51 are pulled out from the positioning sleeve 2 through the cable, and the first magnet 52 is separated from the second magnet 21, completing the separation of the plug body 1.

[0072] A tension spring 10 is also provided between the bracket 81 and the rack 84, and the two ends of the tension spring 10 are fixedly connected to the bracket 81 and the rack 84 respectively. The tension spring 10 provides an auxiliary force for the rain cover 4 to slide toward the connecting plate 51, so that the rain cover 4 is not prone to shaking during transportation.

[0073] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rainproof automatic plug, characterized in that: include: The plug body (1) is used to be inserted into a charging socket of a ship in cooperation with the cable for charging; A positioning sleeve (2) for guiding the plug body (1) to align with a charging socket of a ship; A lifting device (3) for driving the positioning sleeve (2) to rise and fall; A connecting device (5) for connecting the positioning sleeve (2) and the plug body (1), so that the plug body (1) is inserted into the charging seat of the ship as the positioning sleeve (2) descends or is pulled out of the charging seat of the ship as the positioning sleeve (2) rises; The rain cover (4) is connected to the positioning sleeve (2) via a connecting device (5); when the plug body (1) is inserted into a ship charging seat, the positioning sleeve (2) descends to close the charging port of the ship.

2. A rainproof automatic plug according to claim 1, characterized in that: The connecting device (5) comprises: A connecting plate (51) is provided on the plug body (1) and is used for mounting the plug body (1) on the positioning sleeve (2); A first magnet (52) is disposed on the connecting plate (51); A second magnet (21) is disposed on the positioning sleeve (2) and is used to cooperate with the first magnet (52) to adsorb the plug body (1) onto the positioning sleeve (2); A connecting mechanism (6) for connecting the rain cover (4) to the guide sleeve when the plug body (1) is adsorbed on the guide sleeve via the first magnet (52) and the second magnet (21); When the positioning sleeve (2) rises, the plug body (1) is pulled out from the charging port of the ship through the connecting plate (51).

3. A rainproof automatic plug according to claim 2, characterized in that: The connecting mechanism (6) comprises: A first connecting rod (61) is arranged on the positioning sleeve (2); A second connecting rod (62) is rotatably mounted on the inner wall of the rain cover (4); A barb (621) is provided at the end of the second connecting rod (62); The first connecting rod (61) is provided with a connecting groove (611) which cooperates with the hook (621), and the second connecting rod (62) can be rotated to hook the hook (621) in the connecting groove (611). A coil spring (7) is provided at the rotating part of the second connecting rod (62). When the first magnet (52) and the second magnet (21) are attracted, the coil spring (7) pushes the second connecting rod (62) away from the first connecting rod (61). The rain cover (4) is provided with a pushing component (8) for pushing the second connecting rod (62) to rotate until the hook (621) is hooked in the connecting groove (611). A sealing ring (41) is provided at the end surface of the cover opening of the rain cover (4). The cable slides through the rain cover (4). When the positioning sleeve (2) is lowered by a specified distance, the The pushing assembly (8) pushes the second connecting rod (62) to rotate until the barb (621) enters the connecting groove (611); when the positioning sleeve (2) is further lowered by a fixed distance, the barb (621) is hooked in the connecting groove (611); when the positioning sleeve (2) guides the plug body (1) to be inserted into the ship charging seat, the second connecting rod (62) tightens the rain cover (4); the rain cover (4) presses the sealing ring (41) against the plane at the ship charging port; the rain cover (4) is provided with a sealing sleeve (9); the sealing sleeve (9) is used to form a seal between the rain cover (4) and the cable when the rain cover (4) is pressed against the plane at the ship charging port, and to form a sliding fit with the cable again when the rain cover (4) is separated from the plane at the ship charging port.

4. A rainproof automatic plug according to claim 3, characterized in that: The pushing assembly (8) comprises: A bracket (81) is arranged on the inner wall of the rain cover (4); A gear (82) rotatably mounted on the bracket (81); The cam (83) is coaxially provided with the gear (82). A rack (84) is disposed on the top wall of the connecting plate (51) and meshes with the gear (82); The rack (84) is slidably connected to the bracket (81), and the side wall of the cam (83) is tightly fitted against the second connecting rod (62). When the positioning sleeve (2) descends to a first specified distance, the rack (84) drives the gear (82) to rotate until the cam (83) pushes the second connecting rod (62) to rotate until the barb (621) is located in the connecting groove (611), and the cam (83) maintains the position of the second connecting rod (62) during the process of the positioning sleeve (2) descending to the second specified distance.

5. A rainproof automatic plug according to claim 3, characterized in that: The sealing ring (41) has a tubular cross section, and the sealing sleeve (9) comprises: A mounting block (91) is arranged on the rain cover (4) and is provided with a sliding hole (911) extending therethrough. The cable slides through the sliding hole (911) and a mounting cavity (912) is provided therein; A plurality of first sealing blocks (93) are provided and are slidably mounted in the mounting cavity (912) and are used to fit tightly against cables to form a seal, and fit tightly against a top wall of the mounting cavity (912) and the mounting block (91) to form a seal; An air bag (94) is arranged in the installation cavity (912) and is connected to the sealing ring (41) via an air pipe, and is used to push the first sealing block (93) to slide.

6. A rainproof automatic plug according to claim 5, characterized in that: The mounting block (91) is provided with a sealing tube (92), and the cable slides through the sealing tube (92). The first sealing block (93) is provided with a second sealing block (95), and the second sealing block (95) is used to fit tightly against the outer wall of the sealing tube (92) and form a seal between the sealing tube (92).

7. The rainproof automatic plug according to claim 5, characterized in that: The first sealing block (93) is connected to the airbag (94).

8. The rainproof automatic plug according to claim 4, characterized in that: A tension spring (10) is provided between the rack (84) and the bracket (81).

9. The rainproof automatic plug according to claim 1, characterized in that: The positioning sleeve (2) is conical in shape, and a plurality of positioning frames (12) are evenly distributed on the side wall of the plug body (1). A positioning wheel (13) is rotatably mounted on one end of the positioning frame (12), and the positioning wheel is conical in shape and matched with the positioning sleeve (2).

10. The rainproof automatic plug according to claim 1, characterized in that: The lower end of the plug body (1) is conical, and the lower end of the positioning sleeve (2) is conical to match the conical lower end of the plug body (1). The side wall of the conical lower end of the plug body (1) is evenly distributed with a plurality of vibration-damping heads (14). When the plug body (1) is aligned and inserted into the positioning sleeve (2), the vibration-damping heads (14) are all pressed against the inner wall of the positioning sleeve (2).

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