CN110571584B - Waterproof shore power socket plug - Google Patents

Abstract

The present invention discloses a waterproof shore power socket plug. It comprises a socket body and a plug. The socket body comprises a main chamber in the middle and a functional arm. The cavity of the functional arm is provided with a limit groove, a pressure rod and a guide pressure block at the top of the limit groove. The limit groove is provided with an inclined slider, a transverse spring, a tightening spring, a radial limit column and a limit nut. The proximal end of the limit groove has a connecting hole leading to the main chamber. The head of the inclined slider abuts against the tail of the radial limit column. The front of the radial limit column can movably pass through the connecting hole. The plug is provided with a card slot corresponding to the head of the radial limit column. The lower part of the pressure rod extends downward from the guide hole of the guide pressure block into the limit groove and abuts against the inclined slider. The plug and socket of the present invention has good sealing, waterproof and dustproof effects, is easy to process and use, and has accurate positioning.

Description

A waterproof shore power socket plug

Technical Field

The invention relates to the technical field of shore power, in particular to a waterproof shore power socket plug.

Background Art

At present, the resource and environmental constraints faced by my country's economic development are increasing. In densely populated coastal and river port cities, the pollutant emissions generated by the use of auxiliary engines to generate electricity during the berth of ships are an important factor affecting air quality, and the use of shore power is the best way to solve this problem. The technology of ship-to-shore power refers to the use of land power instead of generators on board during the berth of ships. Ports are the main source of air pollution in port cities, and pollutants mainly come from cargo loading and unloading operations and emissions from berthed ships. Using shore power means turning off the auxiliary engines during the berth of ships, and the port provides shore power. Since the power system of international ships is different from that of my country, in order to ensure the continuity of the operation of ship navigation equipment, ships cannot be powered off when using shore power, and the safety production of ports cannot be affected, etc., highlighting the complexity of shore power technology. Usually, the high-power shore power supply line part and the voltage and frequency conversion part are integrated in a standard container, and a shore power socket box is set up at the front of the dock. Cable drums or cable lifting devices are selected according to the actual situation on site. Shore power supply has higher standards than ordinary variable frequency power supply. The core inverter module group is mainly composed of IGBT (insulated gate bipolar transistor), switching power supply, heat sink, electrolytic, absorption capacitor, driver board, copper plate and other components connected to each other. The module group adopts IGBT inverter technology, which has high reliability, small size, greatly saves manufacturing materials, light weight and easy to move; it automatically matches the optimal technical parameters and reduces the wiring inductance. It enhances the reliability of the system, makes the capacitance distribution more uniform, and makes the structure more compact, simple and beautiful. A shore power socket box will be set up at the front of the dock, which contains a high-voltage aviation plug to realize the connection of ship and shore power. In the entire shore power system, shore power plugs and sockets are an indispensable and important part. The existing shore power plugs and sockets have poor integrity and relatively few functions, and the functions such as sealing and forced separation are not prominent.

Summary of the invention

The purpose of the present invention is to provide a shore power plug and socket with high-level waterproof performance and a forced separation function in view of the problems existing in the prior art.

In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

A waterproof shore power socket plug comprises a socket body and a plug, wherein the socket body comprises a main chamber in the middle and a functional arm connected to the outside of the main chamber, a limit groove, a pressure rod and a guide pressure block at the top of the limit groove are arranged in the cavity of the functional arm, an inclined sliding block, a transverse spring, a tightening spring, a radial limit column and a limit nut are arranged in the limit groove, and a connecting hole leading to the main chamber is arranged at the end of the limit groove closer to the main chamber, the head of the inclined sliding block is abutted against the tail of the radial limit column, and the front part of the radial limit column can movably pass through the connecting hole, and a card slot corresponding to the head of the radial limit column is arranged on the plug; the rear part of the radial limit column located in the limit groove is sleeved with a transverse spring, which is in a compressed state and applies a force to the radial limit column away from the main chamber, and the lower part of the pressure rod extends downward from the guide hole of the guide pressure block into the limit groove and The lower part of the pressure rod is located below the guide hole of the guide pressure block, and a limiting nut is also installed thereon. A flexible sealing sleeve is provided on the guide hole of the guide pressure block, and the tightening spring is placed under the inclined slider and presses the inclined slider upward. When the plug and socket need to be plugged in, the upper part of the pressure rod is driven by external force to move downward from the guide hole of the guide pressure block, and squeezes the inclined slider to move downward together. The working inclined surface of the inclined slider is away from the tail of the radial limiting column, and the radial limiting column moves toward the far end of the main chamber under the elastic force of the transverse spring, and the head of the radial limiting column is received in the connecting hole. When the plug is inserted into place, the external force is removed, and the tightening spring pushes the inclined slider and the pressure rod upward to reset. At the same time, the working inclined surface of the inclined slider squeezes the radial limiting column and the transverse spring, so that the ball head of the radial limiting column is embedded in the slot on the plug to achieve a tight and fixed position.

Preferably, the number of the functional arms is 2, which are symmetrically distributed on both sides of the main chamber.

Preferably, the tail of the radial limit column body is a protrusion having an inclined surface parallel to the working inclined surface of the inclined sliding block. The transverse spring is sleeved on the radial limit column body and placed between the side wall at the connecting hole and the protrusion at the tail of the limit column. The cross-sectional shape of the limit groove is rectangular, the radial longitudinal section of the head of the radial limit column is triangular, and the slot on the plug is triangular in shape and size matching the shape of the head of the radial limit column.

Preferably, the guide hole of the guide pressure block is a stepped hole, the inner diameter of the upper hole opening is smaller than the lower hole diameter, the sealing sleeve is placed at the upper small hole of the guide hole of the guide pressure block, the limit nut is threadedly connected to the pressure rod, the outer diameter of the limit nut is between the large and small hole diameters of the guide hole of the guide pressure block, and is placed in the lower large hole of the guide hole of the guide pressure block.

Preferably, a pressing plate is provided on the left and right shoulders of the limiting groove of the functional arm, the guide pressing block is placed on the pressing plate, a sealing ring is provided between the pressing plate and the guide pressing block, and the pressing plate and the guide pressing block are fixed to the two shoulders at the top of the limiting groove by screws.

Preferably, the distribution direction of the limit groove and the direction of the connecting hole are perpendicular to the moving direction of the plug in the main chamber, the moving direction of the pressure rod in the guide hole of the guide pressure block is parallel to the moving direction of the plug in the main chamber, and the working inclined surface of the inclined sliding block is at a 45-degree angle to the moving direction of the plug in the main chamber.

Preferably, the socket is provided with a primary embedding groove and a secondary embedding groove, the primary embedding groove is provided with a sealing ring, the secondary embedding groove is provided with a sealing pressure ring, the cross-section of the sealing pressure ring is a "concave" structure, when the plug is inserted into place, the side of the plug presses the sealing ring to form a primary waterproof, and the bottom and side of the plug press the bottom and side of the sealing pressure ring to form a secondary sealing waterproof.

Preferably, a protective cover is installed on the outside of the plug, and the protective cover includes an upper sleeve and a lower cover body, and a plurality of positioning grooves are evenly distributed on the outside of the middle position of the plug, and a convex track corresponding to the positioning groove is provided on the inner wall of the upper sleeve of the protective cover; in a non-working state, the protective cover is between the plug and the cable connector, and the outer diameter of the outer ring protrusion of the cable connector is larger than the inner diameter of the upper sleeve of the protective cover, so that the protective cover cannot slide out from the cable side; when the plug is inserted into the socket, the convex track of the protective cover forms an interference fit with the positioning groove, and the upper sleeve of the protective cover also forms an interference fit with the plug, the positioning groove does not penetrate the outer wall of the plug, and the cover body of the lower part of the protective cover corresponds to the shape of the functional arm and covers the functional arm. Dust and sun protection for the sealing sleeve is formed.

Preferably, the socket body is further provided with a sealing cover. When not in operation, the sealing cover can cover the main chamber and the functional arm. The middle part and the side wing part of the sealing cover respectively seal the main chamber and the functional arm through sealing rings corresponding to the shapes and sizes of the main chamber and the functional arm. After the sealing cover is closed, it is clamped and sealed with the socket body through a clamp.

Compared with the prior art, the present invention using the above technical solution has the following beneficial effects:

The invention achieves easy insertion, small insertion and separation force, accurate positioning and convenient operation through precise positioning of the radial limiting column and the card slot on the plug.

The present invention realizes rapid positioning and rapid extraction of the plug when inserted into the socket by arranging the position and stroke of a radial limiting column and an inclined sliding block that can be reset on the socket and providing movable space for the radial limiting column and the inclined sliding block through the arrangement of limiting grooves.

The present invention guides and positions the pressure rod through the guide pressure block, installs a sealing sleeve in the small hole of the guide pressure block step hole to form a waterproof and dustproof seal for the control rod, and the guide pressure block seals the entire functional arm through the sealing ring and the pressure sheet, so that the entire structure is compact, small, multifunctional, and waterproof and dustproof.

The present invention installs a radial limit column, an inclined sliding block, a transverse spring, and a tightening spring, so that when the plug is subjected to a pulling force far exceeding the normal insertion and extraction force, the combination of the ball head limit column and the guide inclined block will forcibly squeeze the spring, so that the radial limit column and the inclined sliding block move outward, and finally the plug is forced to separate; the pulling force value of the forced separation is set by adjusting the elastic force value of the transverse spring and the tightening spring, and by changing the size parameters of the radial limit column and the inclined sliding block (such as adjusting the inclination of the inclined surface of the inclined sliding block, the shape angle of the head of the radial limit column, etc.); the forced separation function is to protect the cable, plug and socket from being damaged when the plug is subjected to abnormal pulling force, the forced separation mechanism has a compact structure and is easy to install, the pulling force value can be set and is easy to adjust, and it is convenient to process and realize the function.

The present invention improves the waterproof level by arranging a primary embedding groove and a sealing ring and a secondary embedding groove and a sealing pressure ring at the core part of the socket, especially the concave cross-section design of the secondary embedding groove and the sealing pressure ring directly provides resilience to the plug from the bottom and the side, thereby being more sealed and waterproof.

The present invention can protect the functional arm and the sealing sleeve and other components inside the functional arm from dust and sun exposure by arranging the protective cover and the sealing cover when the plug is inserted into the socket and when the socket is not inserted with the plug.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a waterproof shore power socket plug of the present invention;

FIG2 is a schematic diagram of a socket structure in a waterproof shore power socket plug of the present invention;

FIG3 is a schematic diagram of the exploded structure of a socket of a waterproof shore power socket plug according to the present invention;

FIG4 is a schematic diagram of the socket body structure of a waterproof shore power socket plug of the present invention, omitting components such as radial limit posts, inclined sliders, transverse springs, tightening springs, pressing sheets, pressing rods, guide pressing blocks, screws, and sealing sleeves;

FIG5 is a cross-sectional view of a waterproof shore power socket plug of the present invention;

FIG6 is a schematic diagram of a plug structure of a waterproof shore power socket plug of the present invention;

FIG7 is a schematic diagram of the structure of a protective cover of a waterproof shore power socket plug according to the present invention;

FIG8 is a partial enlarged view of point A in FIG5 of the present invention;

The reference numerals in the figure are as follows: 1-main chamber; 2-clamp; 3-functional arm; 4-lateral spring; 5-tension spring; 6-oblique slider; 7-radial limit column; 8-pressure plate; 9-guide pressure block; 10-limit nut; 11-sealing sleeve; 12-pressure rod; 13-screw; 14-sealing cover; 15-plug; 16-cable connector; 17-protective cover; 18-positioning groove; 19-clamp groove; 20-convex rail; 21-sealing ring; 22-sealing pressure ring; 23-primary embedding groove; 24-secondary embedding groove; 25-connecting hole; 26-limiting groove.

DETAILED DESCRIPTION

The technical solution of the present invention will be described in detail below in conjunction with the embodiments of the present invention and the accompanying drawings.

As shown in Fig. 1-8, a waterproof shore power socket plug of the present invention comprises a socket body and a plug 15. The socket body comprises a main chamber 1 in the middle and a functional arm 3 connected to the outside of the main chamber 1. A limiting groove 26, a pressure rod 12 and a guide pressing block 9 at the top of the limiting groove 26 are arranged in the cavity of the functional arm 3. An inclined slider 6, a transverse spring 4, a tightening spring 5, a radial limiting column 7 and a limiting nut 10 are arranged in the limiting groove 26. The end of the limiting groove 26 closer to the main chamber 1 (i.e., the junction of the functional arm 3 and the main chamber 1) is provided. The side wall) of the inclined slider 6 has a connecting hole 25 leading to the main chamber 1, the head of the inclined slider 6 (the end closer to the main chamber 1) is against the tail of the radial limiting column 7, and the front of the radial limiting column 7 can movably pass through the connecting hole 25, and the head of the inclined slider 6 is provided with a working inclined surface, which gradually rises from the proximal end to the distal end. The plug 15 is provided with a slot 19 corresponding to the head of the radial limiting column 7; the rear part of the radial limiting column 7 located in the limiting groove 26 is sleeved with a transverse spring 4, which is in a compressed state and exerts force on the radial limiting column 7. The force away from the main chamber 1 is applied, the lower part of the pressure rod 12 extends downward from the guide hole of the guide pressure block 9 into the limit groove 26 and abuts against the inclined slider 6. The lower part of the pressure rod 12 located below the guide hole of the guide pressure block 9 is also equipped with a limit nut 10. The guide hole of the guide pressure block 9 is provided with a flexible sealing sleeve 11 sleeved on the pressure rod 12. The tightening spring 5 is placed under the inclined slider 6 and presses the inclined slider 6 upward. When the plug and socket need to be plugged in, the upper part of the pressure rod 12 is driven by external force from the guide hole of the guide pressure block 9 downward. The inclined sliding block 6 moves downwards and squeezes the inclined sliding block 6. The working inclined surface of the inclined sliding block 6 moves away from the tail of the radial limiting column 7. The radial limiting column moves toward the far end of the main chamber 1 under the elastic force of the transverse spring 4. The head of the radial limiting column 7 is received in the connecting hole 25. When the plug 15 is inserted into place, the external force is removed, and the tightening spring 5 pushes the inclined sliding block 6 and the pressure rod 12 upwards to reset. At the same time, the working inclined surface of the inclined sliding block 6 squeezes the radial limiting column 7 and the transverse spring 4, so that the ball head of the radial limiting column 7 is embedded in the slot 19 on the plug 15 to be tightly fixed.

The number of the functional arms 3 may be two, and they are symmetrically distributed on both sides of the main chamber 1 .

When the plug 15 is normally pulled out, external force acts on the pressure rod 12 in the two symmetrical functional arms 3, so that the pressure rod 12 and the inclined slider 6 move downward, and the radial limit column 7 moves outward, and the socket is normally pulled out; when the plug is subjected to a pulling force far exceeding the normal plugging and pulling force, the ball head of the radial limit column 7 is forced to move in the direction of the functional arm 3 (far end) by the plug 15, and the ball head of the radial limit column 7 that extends into the main chamber 1 retreats to the connecting hole 25, and finally the plug 15 is forced to be separated. The pulling force value of forced separation is set by adjusting the elastic value of the transverse spring 4 that supports the inclined slider 6, and by changing the size parameters of the combination of the radial limit column 7 and the inclined slider 6 (such as adjusting the inclination of the inclined surface of the inclined slider 6, the shape angle of the head of the radial limit column 7, etc.); the forced separation function is to protect the cable, plug and socket from damage when the plug 15 is subjected to abnormal pulling force. The forced separation mechanism has a compact structure and is easy to install. The pulling force value can be set and adjusted, which is convenient for processing and function realization.

The tail of the body of the radial limit column 7 is a convex block, which has an inclined surface parallel to the working inclined surface of the inclined slider 6. The transverse spring 4 is sleeved on the body of the radial limit column 7 and is placed between the side wall at the connecting hole 25 and the convex block at the tail of the limit column 7. The cross-sectional shape of the limit groove 26 is rectangular. The radial longitudinal section of the head of the radial limit column 7 is triangular. The card slot 19 on the plug 15 is triangular in shape and size matching the head of the radial limit column 7. The guide hole of the guide pressing block 9 is a stepped hole, and the inner diameter of the upper hole is smaller than the lower hole diameter. The sealing sleeve 11 is placed at the upper small hole of the guide hole of the guide pressing block 9. The limit nut 10 is threadedly connected to the pressure rod 12. The outer diameter of the limit nut 10 is between the large and small hole diameters of the guide hole of the guide pressing block 9 and is placed in the lower large hole of the guide hole of the guide pressing block 9.

The left and right shoulders of the limit groove 26 of the functional arm 3 are provided with a pressing sheet 8, the guide pressing block 9 is placed on the pressing sheet 8, a sealing ring is provided between the pressing sheet 8 and the guide pressing block 9, and the pressing sheet 8 and the guide pressing block 9 are fixed at the two shoulders at the top of the limit groove 26 by screws 13. The guide pressing block 9 guides and positions the pressing rod 12, the small hole of the guide pressing block 9 is installed with a sealing sleeve 11 to seal the pressing rod 12 to form a waterproof and dustproof seal, and the guide pressing block 9 is sealed and waterproof and dustproof through the sealing ring and the pressing sheet 8 for the entire functional arm 3, so that the entire structure is compact, small, and has rich functions, and is waterproof and dustproof.

The distribution direction of the limit groove 26 and the direction of the connecting hole 25 are perpendicular to the moving direction of the plug 15 in the main chamber 1, the moving direction of the pressure rod 12 in the guide hole of the guide pressure block 9 is parallel to the moving direction of the plug 15 in the main chamber 1, and the working inclined surface of the inclined sliding block 6 is at a 45-degree angle to the moving direction of the plug 15 in the main chamber 1.

The socket 1 is provided with a primary embedding groove 23 and a secondary embedding groove 24, a sealing ring 21 is provided in the primary embedding groove 23, a sealing pressure ring 22 is provided in the secondary embedding groove 24, and the sealing pressure ring 22 has a "concave" cross-section structure. When the plug 15 is inserted into place, the side of the plug 15 presses the sealing ring 21 to form a primary waterproof, and the bottom and side of the plug 15 press the bottom and side of the sealing pressure ring 22 to form a secondary sealing waterproof. The present invention improves the waterproof level by arranging the primary embedding groove 23 and the sealing ring 21 and the secondary embedding groove 24 and the sealing pressure ring 22 in the core part of the socket, especially the concave cross-section design of the secondary embedding groove 24 and the sealing pressure ring 22, which directly provides a rebound force to the plug 15 from the bottom and side, thereby being more sealed and waterproof.

The plug 15 is provided with a protective cover 17 on the outside, which includes an upper sleeve and a lower cover body. Several sections of positioning grooves 18 are evenly distributed on the outside of the middle position of the plug 15. The inner wall of the upper sleeve of the protective cover 17 has a convex track 20 corresponding to the positioning groove 18. In the non-working state, the protective cover 17 is between the plug 15 and the cable connector 16. The outer diameter of the outer ring protrusion of the cable connector 16 is larger than the inner diameter of the upper sleeve of the protective cover 17, so that the protective cover 17 cannot slide out from the cable side. When the plug 15 is inserted into the socket 1, the convex track 20 of the protective cover 17 forms an interference fit with the positioning groove 18, and the upper sleeve of the protective cover 17 also forms an interference fit with the plug 15. The positioning groove 18 does not penetrate the outer wall of the plug. The cover body of the lower part of the protective cover 17 corresponds to the shape of the functional arm 3 and covers the functional arm 3. Dust and sun protection of the sealing sleeve 11 is achieved.

The socket body is also provided with a sealing cover 14. In a non-working state, the sealing cover 14 can cover the main chamber 1 and the functional arm 3. The middle part and the side wing part of the sealing cover 14 respectively seal the main chamber 1 and the functional arm 3 through sealing rings corresponding to the shapes and sizes of the main chamber 1 and the functional arm 3. After the sealing cover 14 is covered, it is clamped and sealed with the socket body through the clamp head 2 to achieve waterproof and dustproof.

The above embodiments are only for illustrating the technical idea of the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention; any technology not involved in the present invention can be realized by existing technologies.

Claims (9)

1. The utility model provides a waterproof shore power socket plug, includes socket body, plug (15), its characterized in that: the socket body comprises a main chamber (1) in the middle and a functional arm (3) connected with the outer side of the main chamber (1), a limiting groove (26), a pressing rod (12) and a guide pressing block (9) at the top of the limiting groove (26) are arranged in a cavity of the functional arm (3), an inclined sliding block (6), a transverse spring (4), a tightening spring (5), a radial limiting column (7) and a limiting nut (10) are arranged in the limiting groove (26), one end, close to the main chamber (1), of the limiting groove (26) is provided with a communication hole (25) leading to the main chamber (1), the head of the inclined sliding block (6) abuts against the tail of the radial limiting column (7), the front of the radial limiting column (7) movably penetrates through the communication hole (25), and a clamping groove (19) corresponding to the head of the radial limiting column (7) is arranged on the plug (15); the part of the rear part of the radial limit column (7) is sleeved with a transverse spring (4), the transverse spring (4) is in a compressed state and applies force far away from the main cavity (1) to the radial limit column (7), the lower part of the compression rod (12) downwards stretches into the limit groove (26) from the guide hole of the guide pressing block (9) and props against the inclined sliding block (6), the part of the lower part of the compression rod (12) below the guide hole of the guide pressing block (9) is also provided with a limit nut (10), the upper part of the guide hole of the guide pressing block (9) is provided with a flexible sealing sleeve (11) sleeved on the compression rod (12), the pushing spring (5) is arranged below the inclined sliding block (6), when the plug and the socket are needed to be plugged, the upper part of the compression rod (12) is driven by external force to move downwards from the guide hole of the guide pressing block (9) and press the inclined sliding block (6) to move downwards together, the working inclined surface of the inclined sliding block (6) is far away from the tail part of the radial limiting column (7), the radial limiting column advances towards the far end of the main chamber (1) under the elasticity of the transverse spring (4), the head part of the radial limiting column (7) is retracted into the communication hole (25), when the plug (15) is plugged in place, the external force is removed, the compression spring (5) upwards pushes the inclined sliding block (6) and the compression rod (12) to reset, meanwhile, the working inclined plane of the inclined slide block (6) extrudes the radial limit column (7) and the transverse spring (4) so that the ball head of the radial limit column (7) is embedded into the clamping groove (19) on the plug (15) to achieve fastening and positioning.

2. The waterproof shore power receptacle plug of claim 1, wherein: the number of the functional arms (3) is 2, and the functional arms are symmetrically distributed on two sides of the main chamber (1).

3. The waterproof shore power receptacle plug of claim 1, wherein: the tail of the cylinder of the radial limiting column (7) is provided with a lug which is provided with an inclined plane parallel to the working inclined plane of the inclined sliding block (6), the transverse spring (4) is sleeved at the position of the cylinder of the radial limiting column (7) and is arranged between the side wall of the communication hole (25) and the lug at the tail of the limiting column (7), the cross section of the limiting groove (26) is rectangular, the radial longitudinal section of the head of the radial limiting column (7) is triangular, and the clamping groove (19) on the plug (15) is triangular matched with the head of the radial limiting column (7) in shape and size.

4. The waterproof shore power receptacle plug of claim 1, wherein: the guide hole of the guide pressing block (9) is a stepped hole, the inner diameter of the upper hole opening of the guide pressing block is smaller than the lower hole opening, the sealing sleeve (11) is arranged at the small hole opening of the upper part of the guide hole of the guide pressing block (9), the limit nut (10) is in threaded connection with the pressing rod (12), the outer diameter of the limit nut (10) is between the large hole opening and the small hole opening of the guide hole of the guide pressing block (9), and the limit nut is arranged in the large hole opening of the lower part of the guide hole of the guide pressing block (9).

5. The waterproof shore power receptacle plug of claim 1, wherein: the novel multifunctional electric iron comprises a functional arm (3), wherein a pressing sheet (8) is arranged on the left shoulder and the right shoulder of a limiting groove (26) of the functional arm (3), a guide pressing block (9) is arranged on the pressing sheet (8), a sealing ring is arranged between the pressing sheet (8) and the guide pressing block (9), and the pressing sheet (8) and the guide pressing block (9) are fixed at the two shoulders at the top of the limiting groove (26) through screws (13).

6. The waterproof shore power receptacle plug of claim 1, wherein: the distribution direction of the limit grooves (26) and the direction of the communication holes (25) are perpendicular to the advancing direction of the plug (15) in the main cavity (1), the advancing direction of the compression bar (12) in the guide holes of the guide pressing block (9) is parallel to the advancing direction of the plug (15) in the main cavity (1), and the working inclined plane of the inclined sliding block (6) and the advancing direction of the plug (15) in the main cavity (1) form an angle of 45 degrees.

7. The waterproof shore power receptacle plug of claim 1, wherein: be equipped with one-level embedded groove (23) and second grade embedded groove (24) in socket (1), be equipped with sealing washer (21) in one-level embedded groove (23), be equipped with sealed clamping ring (22) in second grade embedded groove (24), sealed clamping ring (22) cross-section is "concave" type structure, and after plug (15) were inserted in place, plug (15) side pressed sealing washer (21) constituted one-level waterproof, plug (15) bottom and side pressed the bottom surface and the side of sealed clamping ring (22) constituted two-level sealed waterproof.

8. The waterproof shore power receptacle plug of claim 2, wherein: the outer side of the plug (15) is provided with a protective cover (17), the protective cover (17) comprises an upper sleeve and a lower cover body, a plurality of sections of positioning grooves (18) are uniformly distributed on the outer side of the middle part of the plug (15), and a convex rail (20) corresponding to the positioning grooves (18) is arranged on the inner wall of the upper sleeve of the protective cover (17); in a non-working state, the protective cover (17) is arranged between the plug (15) and the cable connector (16), the outer ring bulge outside diameter of the cable connector (16) is larger than the inner diameter of the sleeve at the upper part of the protective cover (17), and the protective cover (17) can not slide out from the cable side; after the plug (15) is inserted into the socket (1) in place, the convex rail (20) of the protective cover (17) and the positioning groove (18) form interference fit, the sleeve on the upper part of the protective cover (17) and the plug (15) also form interference fit, the positioning groove (18) does not penetrate through the outer wall of the plug, and the cover body on the lower part of the protective cover (17) corresponds to the shape of the functional arm (3) and covers the functional arm (3).

9. The waterproof shore power receptacle plug of claim 1, wherein: the socket body is further provided with a sealing cover (14), the sealing cover (14) can cover the main cavity (1) and the functional arm (3) in a non-working state, the middle part and the side wing part of the sealing cover (14) respectively seal the main cavity (1) and the functional arm (3) through sealing rings corresponding to the shapes and the sizes of the main cavity (1) and the functional arm (3), and the sealing cover (14) is tightly clamped and sealed with the socket body through the clamping head (2) after being covered.