Marine low-voltage shore power plug and socket

Abstract

The invention discloses a marine low-voltage shore power plug and socket, and relates to the technical field of marine low-voltage electrical appliances, the marine low-voltage shore power plug comprises a plug shell and a socket shell located on one side of the plug shell, a plug inner core is installed at the plugging end of the plug shell, a wire locking seat is installed at the tail end of the plug shell, and a fluid sealing assembly is installed on the abutting surface of an annular boss; a socket inner core is arranged in the insulating shell; the fixed end of the socket shell is provided with a fixed plate, the connecting end cover of the socket shell is provided with a waterproof cover, and the fixed seat is provided with a locking assembly; according to the invention, through cooperation of the locking assembly and the waterproof cover, a waterproof sealing effect on the socket housing which is not in a plugging state is facilitated, and through cooperation of the fluid sealing assembly and the plug housing and the socket housing, the sealing performance of the plug housing and the socket housing after connection can be improved; through the cooperation of the power-off assembly, the socket inner core and the plug inner core, the situation of electric arc generation between the power connection column and the conductive rod can be avoided, and the safety of electrical connection between the socket and the plug is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of marine low-voltage electrical appliances, and particularly to a marine low-voltage shore power plug and socket. Background Art

[0002] With the wide application of electrical equipment, as important components for electrical connection, the performance and safety of sockets and plugs have received increasing attention; however, there are still many deficiencies in the design of existing sockets and plugs in aspects such as waterproof sealing, adaptation to extreme environments, magnetic adsorption stability, and the tightness and safety of electrical connection;

[0003] Firstly, in the non-plugged state of traditional sockets, their outer shells often lack effective waterproof sealing structures, resulting in easy intrusion of moisture and dust into the interior of the sockets, damaging electrical components, and even causing safety hazards such as short circuits; secondly, during the plugging and using process, the connection between the plug and the socket is also vulnerable to external moisture erosion, such as rainwater, which not only affects the stability of the electrical connection but may also cause electrical failures or safety accidents; in addition, in extremely humid and salt spray corrosion environments, the sealing and stability of traditional sockets are often difficult to ensure; a humid environment is likely to cause the interior of the socket to get damp, affecting electrical performance; while salt spray corrosion may accelerate the corrosion of the socket outer shell and internal components, shortening the service life; finally, when the plug and the socket are electrically connected, if there are problems such as poor contact or insufficient safety, it may lead to unstable current transmission and even serious consequences such as fires; at the same time, when the socket and the plug are not plugged, electric arcs are likely to occur between the power connection posts and the conductive rods, which not only damages electrical components but may also cause electric shock to users; therefore, it is necessary to design a plug and a socket that can solve the above technical problems. Summary of the Invention

[0004] The purpose of the present invention is to propose a marine low-voltage shore power plug and socket to solve the deficiencies existing in the prior art.

[0005] To achieve the above object, the present invention adopts the following technical solution: A marine low-voltage shore power plug and socket, comprising a plug housing and a socket housing located on one side of the plug housing. Inside the insertion end of the plug housing, a plug inner core is installed. At the tail end of the plug housing, a wire locking seat is installed. On the outer wall of the insertion end of the plug housing, an external thread is provided, and a circular boss protrudes on the outer wall of the insertion end of the plug housing. A fluid sealing assembly is installed on the abutting surface of the circular boss; Inside the socket housing, an insulating housing is installed, and a socket inner core is provided inside the insulating housing; At the fixed end of the socket housing, a fixing plate is installed. Fixing holes are provided at the four corners of the fixing plate. A waterproof cover is provided on the connection end of the socket housing. A fixing ring is fixedly sleeved at one end of the socket housing. A fixing seat is fixedly connected to the top of the fixing ring. A connecting rod is hinged on the fixing seat. The outer end of the connecting rod is fixedly connected to the top of the socket housing. A locking assembly for limiting the connecting rod is provided on the fixing seat.

[0006] Preferably, a plurality of insulating tubes are installed on the socket inner core. Inside the insulating housing on one side of the socket inner core, a mounting plate is movably installed. A conductive plate is embedded on the outer side surface of the mounting plate. A plurality of conductive rods protruding from the conductive plate are fixedly inserted into the insulating tubes. A circular docking port is provided on the inner side surface of the mounting plate.

[0007] Preferably, a docking tube is fixedly connected to the outside of the docking port of the mounting plate. A conductive rod protruding from the middle of the inner side surface of the conductive plate extends into the docking tube; A wiring tube is fixedly penetrated through the outer end of the insulating housing. A power-off assembly is provided between the wiring tube and the docking tube.

[0008] Preferably, the power-off assembly includes a power-off cylinder movably sleeved on the outside of the docking tube, a connecting ring plate fixedly sleeved at one end of the power-off cylinder, a plurality of guiding holes provided on the circumferential side of the connecting ring plate, and fixing rods movably arranged inside the guiding holes. One end of the fixing rod is fixedly connected to the mounting plate. A return spring is movably sleeved on the fixing rod between the connecting ring plate and the mounting plate. An adjusting knob is screwed on the fixing rod outside the connecting ring plate. External threads are provided at the outer end of the fixing rod.

[0009] Preferably, the power-off cylinder is fixedly connected to the wiring tube. A power connection column is fixedly connected to the inner end of the wiring tube. There is a power-off space between the inner end of the power connection column and the conductive column. A plurality of arc-proof films are equidistantly provided on the inner wall of the port of the power-off cylinder. A layer of flame-retardant insulating sleeve is also provided on the inner circumferential wall of the insulating housing.

[0010] Preferably, a sealing cover is screwed on the connection end of the plug housing. Hanging rings are fixedly connected to both the sealing cover and the wire locking seat. An anti-disconnection wire is installed between the two hanging rings. Internal threads are provided on the inner wall of the sealing cover to cooperate with the insertion end of the plug housing.

[0011] Preferably, the fluid sealing assembly includes a leak-proof ring mounted on the annular boss, an outer rotating cylinder mounted on the leak-proof ring, and an annular cavity formed inside the leak-proof ring. The annular cavity is filled with fluid magnetic powder. The leak-proof ring is made of rubber. A receiving ring groove for receiving the outer rotating cylinder is formed on the cover body of the sealing cover.

[0012] Preferably, an internal thread matching with the plug housing is formed on the inner wall of the connection end of the socket housing, and an external thread matching with the outer rotating cylinder is formed on the outer wall of the connection end of the socket housing. An internal connecting thread is formed on the inner circumferential wall of the outer rotating cylinder. A rubidium magnetic sealing ring magnetically attracted to the fluid magnetic powder is sleeved on the connection end of the socket housing. A receiving ring groove is recessed on the abutting surface of the leak-proof ring to cooperate with the rubidium magnetic sealing ring.

[0013] Preferably, the locking assembly includes a butting plate movably hinged in the notch at the top of the fixed seat, a rectangular slideway formed through the side wall of the butting plate, a rectangular shaft movably penetrating through the tail end of the rectangular slideway, and torsion spring shafts fixed at both ends of the rectangular shaft. The outer ends of the torsion spring shafts are installed inside the fixed seat. A circular receiving hole is formed through the head end of the rectangular slideway, and the diameter of the receiving hole is larger than the diagonal diameter of the rectangular shaft. The butting end of the butting plate is cylindrical, and a butting groove is formed on the top of the hinged end of the connecting rod to cooperate with the butting end of the butting plate.

[0014] Preferably, a fixed box is fixedly connected to the top of the hinged end of the butting plate. A plugging plate is arranged outside the fixed box. A locking groove for plugging the plugging plate is formed in the notch at the top of the fixed seat. A pushing plate is movably arranged inside the fixed box. A plurality of push rods are fixedly connected to the outer side surface of the pushing plate at equal intervals. The outer ends of the push rods movably penetrate outside the fixed box and are fixedly connected to the plugging plate. A plurality of thrust springs are arranged between the inner side surface of the pushing plate and the inside of the fixed box at equal intervals.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the cooperation of the locking component and the waterproof cover, it is convenient to play a role in waterproof sealing for the socket housing that is not in the plugged state, and can make the waterproof cover have a rain shielding effect on the connection between the plug housing and the socket housing during plugging use; Through the cooperation of the fluid sealing component with the plug housing and the socket housing, firstly, it can improve the sealing performance after the connection of the plug housing and the socket housing, and facilitate the purpose of adapting to extremely humid and salt spray corrosion environments; secondly, it can improve the magnetic adsorption stability after the connection of the plug housing and the socket housing; Through the cooperation of the power-off component with the socket inner core and the plug inner core, it can improve the tightness and safety when the socket inner core is electrically connected to the plug inner core. At the same time, when the socket and the plug are not plugged, the power connection post can also be automatically disconnected from the conductive rod on the conductive disk. When the conductive rod is not electrically connected to the power connection post, the anti-arc film can automatically reset. The automatically reset anti-arc film can avoid the occurrence of electric arcs between the power connection post and the conductive rod, greatly improving the safety of the electrical connection between the socket and the plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation to the present invention. In the drawings:

[0017] Figure 1 is a schematic diagram of the first perspective structure of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the second perspective structure of the overall structure of the present invention;

[0019] Figure 3 is a schematic diagram of the first perspective structure after the sealing cover and the waterproof cover of the present invention are removed;

[0020] Figure 4 is a schematic diagram of the second perspective structure after the sealing cover and the waterproof cover of the present invention are removed;

[0021] Figure 5 is a schematic diagram of the structure of the socket housing and the rubidium magnetic sealing ring of the present invention;

[0022] Figure 6 is a schematic diagram of the first perspective structure of the insulating shell and the plug inner core of the present invention;

[0023] Figure 7 is a schematic diagram of the second perspective structure of the insulating shell and the plug inner core of the present invention;

[0024] Figure 8 is a three-dimensional structure schematic diagram of the outer rotating cylinder and the insulating shell of the present invention;

[0025] Figure 9Schematic diagram of the fixed rod, adjusting knob and return spring of the present invention;

[0026] Figure 10 Schematic diagram of the partial structure of the outer rotating cylinder and the plug housing of the present invention;

[0027] Figure 11 Cross-sectional view of the leak-proof ring, outer rotating cylinder and fluid magnetic powder of the present invention;

[0028] Figure 12 Schematic diagram of the positional relationship between the fixing ring and the insulating shell of the present invention;

[0029] Figure 13 Exploded schematic diagram of the internal structure of the insulating shell of the present invention;

[0030] Figure 14 Schematic diagram of the connecting rod and the abutting plate of the present invention;

[0031] Figure 15 Schematic diagram of the abutting plate and the locking assembly of the present invention;

[0032] Figure 16 Cross-sectional view of the internal structure of the fixing box of the present invention;

[0033] Figure 17 Schematic diagram of the power-off cylinder and the adjusting knob of the present invention;

[0034] Figure 18 Schematic diagram of the conductive disk, conductive column and fixing ring of the present invention;

[0035] Reference numerals in the figures: 1. Plug housing; 2. Sealing cover; 3. Plug inner core; 4. Wire locking seat; 5. Socket housing; 6. Fixed plate; 7. Waterproof cover; 8. Hanging ring; 9. Anti-disconnection wire; 10. Fixed seat; 11. Connecting rod; 12. Socket inner core; 13. Insulating tube; 14. Insulating shell; 15. Wiring tube; 16. Mounting plate; 17. Power-off cylinder; 18. Fixed rod; 19. Adjusting knob; 20. Return spring; 21. Conductive disk; 22. Conductive column; 23. Fixed ring; 24. Abutting plate; 25. Rectangular shaft; 26. Torsion spring shaft; 27. Rectangular slideway; 28. Fixing box; 29. Insertion plate; 30. Push rod; 31. Thrust spring; 32. Flame-retardant insulating sleeve; 33. Leak-proof ring; 34. Outer rotating cylinder; 35. Fluid magnetic powder; 36. Rubidium magnetic sealing ring; 37. Anti-arc film. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0037] Embodiment 1: Refer to Figures 1 to 18 , a marine low-voltage shore power plug and socket of the present invention includes a plug housing 1 and a socket housing 5 located on one side of the plug housing 1. The inner ring abutting end of the plug housing 1 adopts a shape memory alloy and carbon fiber composite structure, which facilitates the plug housing 1 to automatically restore the best contact form when contracting at low temperature or expanding at high temperature, avoiding loosening; a plug inner core 3 is installed inside the plugging end of the plug housing 1, a wire locking seat 4 is installed at the tail end of the plug housing 1, an external thread is provided on the outer wall of the plugging end of the plug housing 1, and an annular boss protrudes on the outer wall of the plugging end of the plug housing 1. A fluid sealing component is installed on the abutting surface of the annular boss; an insulating housing 14 is installed inside the socket housing 5, and a socket inner core 12 is provided inside the insulating housing 14; a fixing plate 6 is installed at the fixed end of the socket housing 5, fixing holes are provided at the four corners of the fixing plate 6, a waterproof cover 7 is provided at the connecting end of the socket housing 5, a fixing ring 23 is fixedly sleeved at one end of the socket housing 5, a fixing seat 10 is fixedly connected to the top of the fixing ring 23, a connecting rod 11 is hinged on the fixing seat 10, and the outer end of the connecting rod 11 is fixedly connected to the top of the socket housing 5. A locking component for limiting the connecting rod 11 is provided on the fixing seat 10; a sealing cover 2 is screwed and connected to the connecting end of the plug housing 1. Hanging rings 8 are fixedly connected to both the sealing cover 2 and the wire locking seat 4, an anti-disconnection wire 9 is installed between the two hanging rings 8, and an internal thread is provided on the inner wall of the sealing cover 2 to cooperate with the plugging end of the plug housing 1; it can improve the stability and anti-disconnection effect when the plug housing 1 is connected to the socket housing 5.

[0038] In the present invention, a plurality of insulating tubes 13 are installed on the socket inner core 12. An installation disk 16 is movably installed inside the insulating housing 14 on one side of the socket inner core 12. The installation disk 16 is made of insulating material and is an annular disk. A conductive disk 21 is embedded on the outer side surface of the installation disk 16. A plurality of conductive rods 22 that are fixedly inserted into the insulating tubes 13 protrude on the conductive disk 21. A circular docking port is provided on the inner side surface of the installation disk 16; a docking tube is fixedly connected to the outside of the docking port of the installation disk 16, and a conductive rod that extends into the docking tube protrudes from the middle of the inner side surface of the conductive disk 21; a wiring tube 15 is fixedly penetrated through the outer end of the insulating housing 14, and a power-off component is provided between the wiring tube 15 and the docking tube.

[0039] In the present invention, the power-off component includes a power-off cylinder 17 movably sleeved outside the docking pipe, a connecting ring plate fixedly sleeved at one end of the power-off cylinder 17, a plurality of guiding holes formed on the circumferential side of the connecting ring plate, and fixing rods 18 movably arranged inside the guiding holes. One end of the fixing rod 18 is fixedly connected to the mounting plate 16. A return spring 20 is movably sleeved on the fixing rod 18 between the connecting ring plate and the mounting plate 16. An adjusting knob 19 is screwed onto the fixing rod 18 outside the connecting ring plate. By rotating the adjusting knob 19, the distance between the power-off cylinder 17 and the mounting plate 16 can be adjusted, and the compression force of the return spring 20 can also be realized, facilitating the improvement of the return speed of the mounting plate 16 when it is not in the plugged state. The outer end of the fixing rod 18 is provided with an external thread. The power-off cylinder 17 is made of insulating material and is fixedly connected to the wiring pipe 15. An electric connection post is fixedly connected to the inner end of the wiring pipe 15. There is a power-off space between the inner end of the electric connection post and the conductive column. A plurality of triangular arc-proof films 37 are equidistantly arranged on the inner wall of the port of the power-off cylinder 17. The triangular tips of the plurality of arc-proof films 37 face the same center of the circle and are in mutual contact. A layer of flame-retardant insulating sleeve 32 is also provided on the inner circumferential wall of the insulating shell 14. Through the setting of the flame-retardant insulating sleeve 32, the overall insulation and flame-retardant effect of the insulating shell 14 can be further improved. Through the cooperation of the power-off component with the socket inner core 12 and the plug inner core 3, the tightness and safety of the socket inner core 12 when electrically connected to the plug inner core 3 can be improved. At the same time, when the socket and the plug are not plugged, the electric connection post and the conductive rod on the conductive disk 21 can be automatically powered off and separated. When the conductive rod is not electrically connected to the electric connection post, the arc-proof film 37 can be automatically reset. Through the automatically reset arc-proof film 37, the occurrence of arc between the electric connection post and the conductive rod can be avoided, greatly improving the safety of the socket and the plug during electrical connection.

[0040] Embodiment 2: It is basically the same as the technical solution of Embodiment 1, except that, as Figure 11 , Figure 14 , Figure 15 and Figure 16As shown in the figure, the fluid sealing assembly includes a leak-proof ring 33 mounted on an annular boss, an outer rotating cylinder 34 mounted on the leak-proof ring 33, and an annular cavity opened inside the leak-proof ring 33. The annular cavity is filled with fluid magnetic powder 35. The leak-proof ring 33 is made of rubber. A receiving ring groove for receiving the outer rotating cylinder 34 is opened on the cover body of the sealing cover 2; an internal thread for mating with the plug housing 1 is opened on the inner wall of the connecting end of the socket housing 5, and an external thread for mating with the outer rotating cylinder 34 is opened on the outer wall of the connecting end of the socket housing 5. A connecting internal thread is opened on the inner circumferential wall of the outer rotating cylinder 34; a rubidium magnetic sealing ring 36 magnetically attracted to the fluid magnetic powder 35 is sleeved on the connecting end of the socket housing 5, and a receiving ring groove is recessed on the abutting surface of the leak-proof ring 33 to fit the rubidium magnetic sealing ring 36; through the cooperation of the fluid sealing assembly with the plug housing 1 and the socket housing 5, firstly, the sealing performance of the plug housing 1 and the socket housing 5 after connection can be improved, and it is convenient to adapt to extremely humid and salt spray corrosion environments; secondly, the magnetic attraction stability of the plug housing 1 and the socket housing 5 after connection can be improved.

[0041] In the present invention, the locking assembly includes a butting plate 24 movably hinged in the top notch of the fixed seat 10, a rectangular slideway 27 penetratingly opened on the side wall of the butting plate 24, a rectangular shaft 25 movably penetrating through the tail end of the rectangular slideway 27, and torsion spring shafts 26 fixed to both ends of the rectangular shaft 25. The outer ends of the torsion spring shafts 26 are installed inside the fixed seat 10. A circular receiving hole is penetratingly opened at the head end of the rectangular slideway 27, and the diameter of the receiving hole is larger than the diagonal diameter of the rectangular shaft 25; the butting end of the butting plate 24 is cylindrical, and a butting groove is opened at the top of the hinged end of the connecting rod 11 to fit the butting end of the butting plate 24; a fixed box 28 is fixedly connected to the top of the hinged end of the butting plate 24. A plug-in plate 29 is provided outside the fixed box 28. A locking groove for plugging the plug-in plate 29 is opened in the top notch of the fixed seat 10. A pushing plate is movably arranged inside the fixed box 28. A plurality of push rods 30 are fixedly connected to the outer side surface of the pushing plate at equal intervals. The outer ends of the push rods 30 movably penetrate outside the fixed box 28 and are fixedly connected to the plug-in plate 29; a plurality of thrust springs 31 are arranged at equal intervals between the inner side surface of the pushing plate and the inside of the fixed box 28; through the cooperation of the locking assembly with the waterproof cover 7, it is convenient to waterproof and seal the socket housing 5 that is not in the plugged state, and when plugged and used, the waterproof cover 7 can provide a rain shielding effect at the connection of the plug housing 1 and the socket housing 5.

[0042] Working principle: In this embodiment, the present invention also proposes a method for using a marine low-voltage shore power plug and socket, including the following steps:

[0043] Step 1: First, install the socket housing 5 through the fixing plate 6, then electrically connect the cables on the ship through the wire locking base 4. Next, remove the sealing cover 2 from the connection end knob of the plug housing 1. Then, push the plug-in board 29 out of the plug-in slot on the fixing base 10. Then, flip the abutting plate 24 to make it in a vertical state. At this time, the abutting plate 24 cancels the abutting limit on the connecting rod 11. After the abutting plate 24 is flipped to a vertical state, by pressing down the abutting plate 24, under the action of the rectangular slideway 27, it can vertically descend along the rectangular shaft 25, so that the lower end of the abutting plate 24 abuts against the lower notch of the fixing base 10. As long as the rectangular shaft 25 does not enter the receiving hole of the rectangular slideway 27, the rectangular shaft 25 will continuously apply torque pressure to the torsion spring shaft 26, which is convenient for automatically flipping and pressing down the abutting plate 24 under the action of the torsion spring shaft 26 after the abutting plate 24 is lifted up later.

[0044] Step 2: After canceling the limit on the connecting rod 11, the waterproof cover 7 can be lifted. After being lifted, the waterproof cover 7 is in an outwardly inclined elevation angle state. Then, by rotating the plug housing 1, the plug housing 1 is screwed and connected to the socket housing 5. And when the plug housing 1 is connected to the socket housing 5, at this time, the outer rotating cylinder 34 can also be screwed and connected to the external thread section at the connection end of the socket housing 5.

[0045] Step 3: After the plug housing 1 is connected to the socket housing 5, the leak-proof ring 33 on the plug housing 1 will abut against the rubidium magnetic sealing ring 36 on the socket housing 5. And under the action of the rubidium magnetic sealing ring 36 and the fluid magnetic powder 35 inside the annular cavity, it can further improve the sealing performance of the abutment between the leak-proof ring 33 and the rubidium magnetic sealing ring 36, play a role in dynamically filling the gap, achieve IP68-level waterproof and dustproof, and facilitate adapting to extremely humid and salt spray corrosion environments.

[0046] Step 4: When the plug housing 1 is connected to the socket housing 5, at this time, the plug inner core 3 inside the plug housing 1 will be inserted into the insulating tube 13 on the socket inner core 12, and the plug-in column on the plug inner core 3 will be connected to the conductive column 22 inside the insulating tube 13. And during the insertion process, the plug inner core 3 pushes the socket inner core 12 to move towards the inside of the insulating shell 14. Then, the mounting plate 16 drives the docking tube to move towards the power-off cylinder 17. Through the moving mounting plate 16, the conductive rod extending into the docking tube can be inserted into the power-off cylinder 17, and pass through multiple arc-proof films 37 and knock them open, so that the conductive rod is electrically connected to the power connection column inside the power-off cylinder 17.

[0047] Step 5, when the electrical connection between the conductive rod and the electrical connection post is completed, the mounting disc 16 is in the operation of compressing the return spring 20 at this time, which is convenient for automatically disconnecting the power between the electrical connection post and the conductive rod on the conductive disc 21 when the plug is disconnected subsequently. And when the conductive rod is not electrically connected to the electrical connection post, the arc-proof film 37 can be automatically reset. Through the automatically reset arc-proof film 37, the occurrence of arc between the electrical connection post and the conductive rod can be avoided, and the safety of the electrical connection between the socket and the plug can be improved. And after the plug housing 1 and the socket housing 5 are plugged together, the waterproof cover 7 is covered on the upper part of the connection end of the plug housing 1 and the socket housing 5, which can play a rain-proof effect. And by raising the abutting plate 24 in the locking assembly by half, and then with the cooperation of the torsion spring shaft 26 and the rectangular shaft 25, one end of the abutting plate 24 is lapped on the connecting rod 11, which plays a role in pressing and preventing the connecting rod 11 from being lifted, and can avoid the situation that the waterproof cover 7 is blown up in strong winds, and can ensure the rain-proof effect of the waterproof cover 7 on the connection between the plug housing 1 and the socket housing 5.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A low-voltage shore power plug and socket for use on a ship, comprising a plug housing (1) and a socket housing (5) located on one side of the plug housing (1), characterized in that: A plug core (3) is installed inside the plug-in end of the plug shell (1), a wire lock seat (4) is installed at the rear end of the plug shell (1), an external thread is provided on the outer wall of the plug-in end of the plug shell (1), an annular boss is raised on the outer wall of the plug-in end of the plug shell (1), and a fluid sealing component is installed on the abutting surface of the annular boss; an insulating shell (14) is installed inside the socket shell (5), and a socket core (12) is provided inside the insulating shell (14); A fixing plate (6) is installed at the fixed end of the socket housing (5), and fixing holes are opened at the four corners of the fixing plate (6). The connection end cover of the socket housing (5) is provided with a waterproof cover (7). A fixing ring (23) is fixedly sleeved at one end of the socket housing (5), and a fixing seat (10) is fixedly connected to the top of the fixing ring (23). A connecting rod (11) is hinged on the fixing seat (10), and the outer end of the connecting rod (11) is fixedly connected to the top of the socket housing (5). A locking assembly for limiting the connecting rod (11) is provided on the fixing seat (10).

2. A marine low-voltage shore power plug and socket according to claim 1, characterized in that: A plurality of insulating tubes (13) are installed on the socket inner core (12); a mounting plate (16) is movably installed inside the insulating shell (14) on one side of the socket inner core (12); a conductive plate (21) is embedded on the outer side surface of the mounting plate (16); a plurality of conductive rods (22) protrude from the conductive plate (21) and are fixedly inserted into the insulating tubes (13); and a circular docking port is provided on the inner side surface of the mounting plate (16).

3. A marine low-voltage shore power plug and socket according to claim 2, characterized in that: A docking tube is fixedly connected to the outer side of the docking interface of the mounting plate (16); a conductive rod protrudes from the middle of the inner side surface of the conductive plate (21) and extends into the interior of the docking tube; a wiring tube (15) is fixedly penetrated through the outer end of the insulating shell (14); a power-off assembly is provided between the wiring tube (15) and the docking tube.

4. A marine low-voltage shore power plug and socket according to claim 3, characterized in that: The power-off assembly comprises a power-off cylinder (17) movably sleeved on the outside of the docking tube, a connecting ring plate fixedly sleeved on one end of the power-off cylinder (17), a plurality of guide holes provided on the peripheral side of the connecting ring plate, and a fixing rod (18) movably provided inside the guide hole, one end of the fixing rod (18) being fixedly connected to the mounting plate (16), a return spring (20) being movably sleeved on the fixing rod (18) between the connecting ring plate and the mounting plate (16), an adjusting knob (19) being screwed on the fixing rod (18) on the outside of the connecting ring plate, and an external thread being provided on the outer end of the fixing rod (18).

5. A marine low-voltage shore power plug and socket according to claim 4, characterized in that: The power-off tube (17) is fixedly connected to the wiring tube (15), the inner end of the wiring tube (15) is fixedly connected to a power-on post, a power-off space is provided between the inner end of the power-on post and the conductive post, a plurality of arc-proof rubber sheets (37) are equidistantly provided on the inner wall of the port of the power-off tube (17), and a flame-retardant insulating sleeve (32) is also provided on the inner ring wall of the insulating shell (14).

6. A marine low-voltage shore power plug and socket according to claim 2, characterized in that: The connecting end of the plug housing (1) is screwed together with a sealing cover (2), and a hanging ring (8) is fixedly connected to the sealing cover (2) and the wire lock seat (4), and an anti-slip wire (9) is installed between the two hanging rings (8). The inner wall of the sealing cover (2) is provided with an internal thread that matches the plug-in end of the plug housing (1).

7. A marine low-voltage shore power plug and socket according to claim 6, characterized in that: The fluid sealing assembly comprises a leakproof ring (33) mounted on an annular boss, an outer rotating cylinder (34) mounted on the leakproof ring (33), and an annular cavity provided inside the leakproof ring (33), wherein the interior of the annular cavity is filled with fluid magnetic powder (35), the leakproof ring (33) is made of rubber, and a receiving ring groove for receiving the outer rotating cylinder (34) is provided on the cover body of the sealing cover (2).

8. A marine low-voltage shore power plug and socket according to claim 7, characterized in that: The inner wall of the connection end of the socket shell (5) is provided with an internal thread that cooperates with the plug shell (1), and the outer wall of the connection end of the socket shell (5) is provided with an external thread that cooperates with the outer rotating cylinder (34), and the inner ring wall of the outer rotating cylinder (34) is provided with a connecting internal thread; a rubidium magnetic sealing ring (36) that magnetically cooperates with the fluid magnetic powder (35) is sleeved on the connection end of the socket shell (5), and a receiving ring groove that cooperates with the rubidium magnetic sealing ring (36) is recessed on the abutting surface of the leak-proof ring (33).

9. A marine low-voltage shore power plug and socket according to claim 1, characterized in that: The locking assembly comprises an abutment plate (24) movably hinged in a notch at the top of the fixing seat (10), a rectangular slideway (27) penetrating a side wall of the abutment plate (24), a rectangular shaft (25) movably penetrating a rear end of the rectangular slideway (27), and a torsion spring shaft (26) fixedly connected to both ends of the rectangular shaft (25); the outer end of the torsion spring shaft (26) is mounted inside the fixing seat (10); a circular receiving hole is penetrating a front end of the rectangular slideway (27), and the diameter of the receiving hole is larger than the diagonal diameter of the rectangular shaft (25); the abutment end of the abutment plate (24) is cylindrical, and an abutment groove is provided at the top of the hinged end of the connecting rod (11) to match the abutment end of the abutment plate (24).

10. A marine low-voltage shore power plug and socket according to claim 9, characterized in that: A fixed box (28) is fixedly connected to the top of the hinged end of the abutment plate (24), a plug-in plate (29) is arranged outside the fixed box (28), a locking groove for plugging the plug-in plate (29) is provided in the notch at the top of the fixed seat (10), a push plate is movably arranged inside the fixed box (28), a plurality of push rods (30) are equidistantly fixedly connected to the outer side surface of the push plate, the outer end of the push rod (30) movably passes through the outside of the fixed box (28) and is fixedly connected to the plug-in plate (29); a plurality of thrust springs (31) are equidistantly arranged on the inner side surface of the push plate and inside the fixed box (28).

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