Waterproof connector for ship cleaning robot

Abstract

The utility model discloses a waterproof connector for a ship cleaning robot, which is characterized in that a sealing ring group consisting of a positive pressure sealing ring, a side pressure sealing ring and an inclined pressure sealing ring is arranged in a connector body, and three layers of sealing rings are used for protection, so that the waterproofness between a plug shell and a socket shell is greatly enhanced; fine thread sections are respectively arranged on the inner walls of the port of the ring port end of the plug shell and the port of the ring port end of the socket shell of the connector body, so that the grasping adhesive force between the colloid and the inner walls of the ring port ends is increased, and tiny cracks are avoided; a mode of firstly welding and then pouring glue is adopted, a contact pin welding cup and a contact pin hole welding cup are sealed in the glue and are solidified along with the glue, the welding cups and welding spots are not contacted with seawater, protection on the welding spots is increased, and meanwhile direct use by a user is facilitated; the outer surface of the connector body is made of a stainless steel 316L material, and passivating treatment is carried out on the surface of the connector body; the service life of the whole connector cable is prolonged, the replacement period of the connector cable is prolonged, and cost is reduced and efficiency is improved for customers.

Description

[Technical field]

[0001] The utility model relates to the technical field of electric connectors, in particular to a waterproof connector used in a water environment. [Background technology]

[0002] Connectors are indispensable components in electronic devices, including plugs and sockets, which connect two devices with components. Their function is to realize the flow of current or signals in the circuit, thereby achieving the predetermined function. Ship cleaning robots are used to clean seaweed, barnacles, algae, etc. on the bottom of ships. When they are working, they inevitably need to be immersed in water. Therefore, ship cleaning robots have very high requirements for the protection level and reliability of the connectors used.

[0003] This type of connector currently on the market has several drawbacks:

[0004] 1. Install a positive extrusion sealing ring between the socket housing and the plug housing installation position to prevent water. During the locking process of the connector, if the force is uneven or the extrusion stroke is too large, or the hardness of the sealing ring is too low, etc., the sealing ring may fail, deform or break, thereby affecting the watertight effect of the connector;

[0005] 2. The inside of the ring end of the socket shell and the plug shell needs to be sealed with epoxy resin glue. In the prior art, the inner wall of the ring end is generally smooth or has a stepped groove, and the inside of the shell cannot be rough enough. When the glue solidifies, the contact surface between the colloid and the inner wall of the ring end is too smooth, resulting in a small gripping adhesive force between the metal shell and the epoxy resin glue. If the epoxy resin is potted and then experiences thermal expansion and contraction due to high and low temperatures, a slight separation gap that is invisible to the naked eye will be generated between the colloid and the shell. Under deep water high pressure, tiny water molecules will penetrate into the connector from the edge gap, which will bring certain safety hazards to the connector over time.

[0006] 3. The prior art pin connection method is to fill glue first and then weld; that is, after the pin and pinhole parts are fixed with glue, they are welded with the external wire. In this processing method, the pin welding cup and the pinhole welding cup are both extended out of the ring end, and the welding cup is exposed outside the glue, which is convenient for users to weld with the external wire in subsequent use. However, the exposed welding cup cannot be wrapped by epoxy resin glue, which seriously affects its waterproof ability;

[0007] 4. Materials. In the existing technology, the connector shell is generally made of brass + surface electroplating. However, the connector is exposed to seawater for a long time and suffers from seawater corrosion, which causes the surface of the connector shell to rust and oxidize, seriously affecting the service life of the connector. If the corrosion of the connector shell is not discovered, the robot will go directly into the sea for operation. Under the strong pressure of deep water, water may enter the connector, causing a short circuit, thereby burning the robot.

[0008] Therefore, the existing technology needs to be improved. [Utility Model Content]

[0009] The utility model provides a waterproof connector for a ship cleaning robot to solve the defects in the above-mentioned background technology.

[0010] The utility model adopts the following technical solutions.

[0011] A waterproof connector for a ship cleaning robot comprises a connector body, wherein a plug housing of a plug assembly of the connector body is inserted into a socket housing of a socket assembly, and a connecting shell of the connector body reinforces the connection between the plug assembly and the socket assembly; the invention is characterized in that a sealing ring group is arranged at the connection between the plug housing and the socket housing, and the sealing ring group comprises a positive pressure sealing ring, a side pressure sealing ring, and an oblique pressure sealing ring.

[0012] The plug assembly includes a plug housing and a pin part; one end of the plug housing is a plug housing connection end, a whole circle of protruding steps are provided on the plug housing connection end, and three installation slots are provided on the left side of the steps, which are installation slot 1, installation slot 2, and installation slot 3 from right to left; the slot walls on the right side of installation slot 1 and installation slot 3 are higher and lower on the left side, and the slot walls on the left and right sides of installation slot 2 are consistent in height, and the slot bottom positions of installation slot 1, installation slot 2, and installation slot 3 are uniformly sunken in sequence; the other end of the plug housing is a plug housing ring end. The socket assembly includes a socket housing and a jack part; one end of the socket housing is a socket housing connection end, and corresponding slots 1, 2, and 3 corresponding to the sealing ring group are provided in the socket housing connection end; the other end of the socket assembly is a socket housing ring end.

[0013] The positive pressure seal ring, side pressure seal ring and oblique pressure seal ring are respectively and correspondingly assembled in the installation groove 1, installation groove 2 and installation groove 3 of the plug housing connection end; the plug housing connection end extends into the socket housing connection end, and the positive pressure seal ring, side pressure seal ring and oblique pressure seal ring are respectively pressed against the corresponding groove 1, corresponding groove 2 and corresponding groove 3 in the socket housing connection end and fixed. As a preferred solution, a fine pitch thread section is provided in the ring end of the plug housing.

[0014] As a preferred solution, a fine thread section is provided inside the ring end of the socket shell, and an external thread is provided on the outer wall of the socket shell connection end (211).

[0015] As a preferred solution, the pin insulator of the pin component is fixedly installed in the connecting end of the plug shell, and the pin of the pin component is located in the pin insulator, wherein the pin welding cup at the tail end of the pin is located in the ring end of the plug shell for welding with the external wire; epoxy resin glue is poured into the ring end of the plug shell, and after the epoxy resin glue is cured, a solidified colloid is formed to seal the pin welding cup, and the colloid is more tightly bonded to the fine thread section, further sealing the pin component.

[0016] As a preferred solution, the hole end insulator of the jack component is fixedly installed in the connecting end of the socket shell, and the pin hole of the jack component is located in the hole end insulator, wherein the pin hole welding cup at the tail end of the pin hole is located in the ring end of the socket shell for welding with the external wire; epoxy resin glue is poured into the ring end of the socket shell, and after the epoxy resin glue is cured, a solidified colloid is formed to seal the pin hole welding cup, and the colloid is more tightly bonded to the fine thread section, further sealing the jack component.

[0017] As a preferred solution, the connecting shell is sleeved on the plug shell, one end face of the connecting shell is provided with a full circle of inward-facing snap-in positions, and the other end is provided with internal threads; the connecting end of the plug shell is inserted into the connecting end of the socket shell, wherein the hole end insulator is inserted into the pin insulator, and the pin is located in the pin hole, and the connecting shell is tightened until the snap-in position is stuck on the right end face of the step position of the connecting end of the plug shell, and the external thread on the connecting end of the socket shell is locked with the internal thread of the connecting shell to realize the overall installation of the connector body.

[0018] As a preferred solution, a tail plate nut is installed outside the ring end of the plug housing.

[0019] As a preferred solution, the connector body is made of stainless steel 316L and is passivated on the surface.

[0020] The beneficial effects of the utility model are:

[0021] 1. A sealing ring group consisting of a positive pressure sealing ring, a side pressure sealing ring and an oblique pressure sealing ring is arranged between the plug housing and the socket housing of the connector, with three layers of sealing protection to enhance the waterproofness and improve the protection level of the connector;

[0022] 2. Fine-pitch thread sections are provided on the inner walls of the ring ends of the plug housing and the socket housing, which greatly increases the gripping and adhesive force between the colloid and the inner wall of the ring end, avoiding the appearance of fine cracks;

[0023] 3. The method of welding first and then pouring glue is adopted. The pin welding cup and the pin hole welding cup are sealed in the glue. As the glue solidifies, the welding cup will not contact the seawater, which increases the protection of the welding point and is convenient for users to use directly;

[0024] 4. The connector body is made of stainless steel 316L and is passivated on the surface; this extends the service life of the entire connector cable, increases the replacement cycle of the connector cable, and reduces costs and increases efficiency for customers.

Brief Description of the Drawings

[0025] Figure 1 This is an explosion diagram of the utility model;

[0026] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0027] Figure 3 This is a schematic diagram of the sealing ring assembly and the plug housing of the utility model;

[0028] Figure 4 This is a schematic diagram of the socket housing of the utility model;

[0029] Figure 5 The overall appearance of the utility model.

[0030] Among them: 100-connector body, 10-plug assembly, 11-plug housing, 111-plug housing connection end, 1111-step position, 1112-installation slot 1, 1113-installation slot 2, 1114-installation slot 3, 112-plug housing ring end, 113-tail nut, 12-pin part, 121-pin, 1211-pin welding cup, 122-pin end insulator, 20-socket assembly , 21-socket housing, 211-socket housing connection end, 2111-corresponding groove one, 2112-corresponding groove two, 2113-corresponding groove three, 2114-external thread, 212-socket housing ring end, 22-socket part, 221-pin hole, 2211-pin hole welding cup, 222-hole end insulator, 30-sealing ring group, 31-positive pressure sealing ring, 32-side pressure sealing ring, 33-oblique pressure sealing ring,

[0031] 40-connecting housing, 41-card edge, 42-internal thread, a-fine thread section, b-colloid. [Specific implementation method]

[0032] 1. The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0033] 2. It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] 3. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] 4. In this utility model, unless otherwise clearly specified and limited, the terms "connection", "fixation", "installation" and the like should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0036] See also Figure 1-Figure 5 :

[0037] A waterproof connector for a ship cleaning robot comprises a connector body (100), wherein a plug housing (11) of a plug assembly (10) of the connector body (100) is inserted into a socket housing (21) of a socket assembly (20), and a connecting shell (40) of the connector body (100) reinforces the connection between the plug assembly (10) and the socket assembly (20); the connector is characterized in that a sealing ring group (30) is provided at the connection between the plug housing (11) and the socket housing (21), and the sealing ring group (30) comprises a positive pressure sealing ring (31), a side pressure sealing ring (32), and an oblique pressure sealing ring (33).

[0038] A plug housing connection end (111) of the plug housing (11) of the plug assembly (10) is provided with a whole circle of protruding step positions (1111), and three installation grooves are provided on the left side of the step position (1111), which are installation groove one (1112), installation groove two (1113), and installation groove three (1114) from right to left; wherein the groove wall heights on the right sides of the installation groove one (1112) and the installation groove three (1114) are higher and lower on the left side, and the groove wall heights on the left and right sides of the installation groove two (1113) are consistent, and the groove bottom positions of the installation groove one (1112), the installation groove two (1113), and the installation groove three (1114) are evenly sunken in sequence.

[0039] A corresponding groove 1 (2111), a corresponding groove 2 (2112), and a corresponding groove 3 (2113) corresponding to the sealing ring assembly (30) are provided in the socket housing connection end (2111) of the socket housing (21) of the socket assembly (20).

[0040] The positive pressure sealing ring (31), the side pressure sealing ring (32), and the oblique pressure sealing ring (33) are respectively and correspondingly located in the installation groove one (1112), the installation groove two (1113), and the installation groove three (1114) of the plug housing connection end (111); the plug housing connection end (111) extends into the socket housing connection end (211), and the positive pressure sealing ring (31), the side pressure sealing ring (32), and the oblique pressure sealing ring (33) are respectively pressed against the corresponding groove one (2111), the corresponding groove two (2112), and the corresponding groove three (2113) in the socket housing connection end (211) and fixed.

[0041] A fine thread section (a) is provided in the annular end (112) of the plug housing; a fine thread section (a) is provided in the annular end (212) of the socket housing, and an external thread (2114) is provided on the outer wall of the socket housing connection end (211).

[0042] The pin insulator (122) of the pin member (12) in the plug assembly (10) is fixedly mounted in the connection end (111) of the plug housing, the pin (121) of the pin member (12) is located in the pin insulator (122), and the pin welding cup (1211) at the tail end of the pin (121) is located in the ring end (111) of the plug housing for welding with an external wire; epoxy resin glue is poured into the ring end (111) of the plug housing, and after the epoxy resin glue is cured, a solidified colloid (b) is formed to seal the pin welding cup (1211), and the colloid (b) is more firmly bonded to the fine thread section (a), thereby further sealing the pin member (12).

[0043] The hole end insulator (222) of the socket component (22) in the socket assembly (20) is fixedly installed in the socket housing connection end (211), and the pin hole (221) of the socket component (22) is located in the hole end insulator (222), wherein the welding cup (2211) at the tail end of the pin hole (221) is located in the socket housing ring end (212) for welding with an external wire; epoxy resin glue is poured into the socket housing ring end (212), and the epoxy resin glue forms a solidified colloid (b) after solidification to seal the pin hole welding cup (2211), and the colloid (b) is more firmly bonded to the fine thread section (a), thereby further sealing the socket component (22).

[0044] The connecting shell (40) is sleeved on the plug shell (11); one end surface of the connecting shell (40) is provided with a full circle of inwardly facing locking positions (41), and the other end is provided with threads; the plug shell connecting end (111) is inserted into the socket shell connecting end (211), wherein the hole end insulator (222) is inserted into the pin insulator (122), and the pin (121) is located in the pin hole (221); the connecting shell (40) is screwed until the locking position (41) is locked on the right end surface of the step position (1111) of the plug shell connecting end (111), and the external thread (2114) on the socket shell connecting end (211) is locked with the internal thread of the connecting shell (40), so that the overall installation of the connector body (100) is realized.

[0045] A tail plate nut (113) is installed outside the ring end (112) of the plug housing.

[0046] The working of the sealing ring group in the utility model:

[0047] Positive pressure sealing ring: The positive pressure sealing ring is located in the installation groove 1. The groove wall on one side of the installation groove 1 is the left side wall of the step position of the plug housing connection end and is higher, while the groove wall on the other side is lower. At the same time, the groove bottom of the installation groove 1 is shallower. After the sealing ring is installed at this location, the corresponding groove 1 on the inner wall of the socket housing connection end pushes the sealing ring at the step position, so that the sealing ring is compressed and deformed as a whole, forming a positive positive pressure sealing ring.

[0048] Side pressure sealing ring: The side pressure sealing ring is located in the second installation groove. The groove walls on the left and right sides of the second installation groove are of the same height. The bottom of the second installation groove is lower than the bottom of the first installation groove. After the sealing ring is installed, the corresponding groove 2 on the inner wall of the socket housing connection end presses the sealing ring into the second installation groove. When the sealing ring is subjected to force, the outer side is subjected to force, causing the sealing ring to be compressed, forming a side pressure sealing ring.

[0049] Oblique pressure sealing ring: The oblique pressure sealing ring is located in the installation groove three. The groove wall on the inner side of the installation groove three is high, the groove wall on the outer side is low, and the groove bottom position is low. After the sealing ring is installed here, the corresponding corresponding groove three in the connecting end of the socket shell presses on the inclined surface of one side of the sealing ring, pressing the inclined surface of the sealing ring. The inclined surface of the sealing ring is subjected to force to form an oblique pressure sealing ring.

[0050] The sealing ring group of the utility model is set up as a complement. The three sealing rings are compressed in different directions, and the sealing effect is better. It can effectively avoid the safety hazards existing in the prior art and prevent extremely fine water molecules from penetrating from the gaps at the connection, thereby greatly improving the protection level of the connector.

[0051] The utility model provides fine-pitch thread sections in the ring end of the plug shell and the ring end of the socket shell, and after the injected epoxy resin glue is cured, a solidified colloid is formed, and the contact surface between the colloid and the inner wall of the ring end becomes very rough, and the contact area is increased, and the gripping adhesion between the colloid and the inner wall of the shell is greatly increased, so that no fine gap is generated between the colloid and the inner wall of the ring end, thereby isolating the penetration of water molecules.

[0052] The utility model adopts the method of welding first and then pouring glue; the pin welding cup is located in the ring end of the plug shell, and the pin hole welding cup is located in the ring end of the socket shell; after the pin welding cup and the pin hole welding cup are respectively welded to the external wire, the welding point is located in the welding cup, and then the epoxy resin glue is poured. After the epoxy resin glue is cured, the welding cup and the welding point are sealed, and the welding cup and the welding point will not contact the seawater, which is convenient for users to use directly. Users do not need to weld external wires, saving users processing procedures. The connector body of the utility model adopts high-quality stainless steel 316L material + surface passivation treatment. The connector shell can withstand salt spray for up to 300 hours. Even if the connector is in seawater for a long time, it will not have poor appearance such as oxidation and corrosion. The wire selection will also use oil-resistant, wear-resistant, corrosion-resistant, and UV-resistant PUR sheathed wire to protect the internal wire core of the cable, thereby greatly extending the service life of the entire connector cable, increasing the replacement cycle of the connector cable, and reducing costs and increasing efficiency for customers.

[0053] When installing the utility model:

[0054] 1. Installation of the plug assembly: insert the pin into the pin end insulator, the pin end insulator is fixed in the connecting end of the plug shell, the pin welding cup is located in the ring end of the plug shell, and the welding point is located in the welding cup after the external wire is welded to the pin welding cup. The plug shell is placed vertically, and then epoxy resin glue is poured into the ring end of the plug shell. After the glue is cured, a solidified colloid is formed. The edge of the pin end insulator is sealed with the inner wall of the connecting end of the plug shell, and the pin welding cup and the welding point are sealed in the colloid; 2. Installation of the socket assembly: insert the pin hole into the hole end insulator, the hole end insulator is fixed in the connecting end of the socket shell, and the pin hole welding cup is located in the ring end of the socket shell. After the external wire is welded to the pin hole welding cup, its welding point is located in the welding cup. The socket shell is placed vertically, and then epoxy resin glue is poured into the ring end of the socket shell. After the glue is cured, a solidified colloid is formed. While the edge of the hole end insulator is sealed with the inner wall of the connecting end of the socket shell, the pin hole welding cup and the welding point are sealed in the colloid.

[0055] 3. After the glue filling is completed, insert the plug assembly into the socket assembly, put the connecting shell on the plug shell and tighten it to complete the overall installation.

[0056] The above description is only a preferred embodiment of the utility model, and the above specific embodiment is not a limitation of the utility model. Various deformations and modifications may occur within the scope of the technical concept of the utility model, and any modification, modification or equivalent replacement made by ordinary technicians in this field based on the above description belongs to the scope of protection of the utility model.

Claims

1. A waterproof connector for a ship cleaning robot, comprising a connector body (100); a plug housing (11) of a plug assembly (10) of the connector body (100) is inserted into a socket housing (21) of a socket assembly (20), and a connecting shell (40) of the connector body (100) reinforces the connection between the plug assembly (10) and the socket assembly (20); Features: A sealing ring group (30) is arranged at the connection between the plug housing (11) and the socket housing (21), wherein the sealing ring group (30) comprises a positive pressure sealing ring (31), a side pressure sealing ring (32), and an oblique pressure sealing ring (33); The plug assembly (10) comprises a plug housing (11) and a pin member (12); one end of the plug housing (11) is a plug housing connection end (111), a whole circle of protruding step positions (1111) are provided on the plug housing connection end (111), and three installation grooves are provided on the left side of the step position (1111), which are installation groove one (1112), installation groove two (1113), and installation groove three (1114) from right to left; the groove wall heights on the right sides of the installation groove one (1112) and the installation groove three (1114) are higher and lower on the left side, the groove wall heights on the left and right sides of the installation groove two (1113) are consistent, and the groove bottom positions of the installation groove one (1112), the installation groove two (1113), and the installation groove three (1114) are evenly sunken in sequence; the other end of the plug housing (11) is a plug housing ring end (112); The socket assembly (20) comprises a socket housing (21) and a socket member (22); one end of the socket housing (21) is a socket housing connection end (211), and a corresponding groove 1 (2111), a corresponding groove 2 (2112), and a corresponding groove 3 (2113) corresponding to the sealing ring group (30) are arranged in the socket housing connection end (211); the other end of the socket assembly (20) is a socket housing ring end (212); The positive pressure sealing ring (31), the side pressure sealing ring (32), and the oblique pressure sealing ring (33) are respectively and correspondingly assembled in the installation groove 1 (1112), the installation groove 2 (1113), and the installation groove 3 (1114) of the plug housing connection end (111); the plug housing connection end (111) extends into the socket housing connection end (211), and the positive pressure sealing ring (31), the side pressure sealing ring (32), and the oblique pressure sealing ring (33) are respectively pressed against the corresponding groove 1 (2111), the corresponding groove 2 (2112), and the corresponding groove 3 (2113) in the socket housing connection end (211) and fixed.

2. A waterproof connector for a ship cleaning robot according to claim 1, characterized in that: A fine thread section (a) is provided inside the ring end (112) of the plug housing.

3. A waterproof connector for a ship cleaning robot according to claim 1, characterized in that: A fine thread section (a) is provided inside the socket housing ring end (212), and an external thread (2114) is provided on the outer wall of the socket housing connection end (211).

4. A waterproof connector for a ship cleaning robot according to claim 1, characterized in that: The plug pin insulator (122) of the plug pin member (12) is fixedly mounted in the plug housing connection end (111), and the plug pin (121) of the plug pin member (12) is located in the plug pin insulator (122), wherein the welding cup (1211) at the tail end of the plug pin (121) is located in the plug housing connection end (111) for welding with an external wire; epoxy resin glue is poured into the plug housing ring end (112), and after the epoxy resin glue is cured, a solidified colloid (b) is formed to seal the plug pin welding cup (1211), and the colloid (b) is more firmly bonded to the fine thread section (a), thereby further sealing the plug pin member (12).

5. A waterproof connector for a ship cleaning robot according to claim 1, characterized in that: The hole end insulator (222) of the socket member (22) is fixedly installed in the connection end (211) of the socket housing, and the pin hole (221) of the socket member (22) is located in the hole end insulator (222), wherein the welding cup (2211) at the tail end of the pin hole (221) is located in the ring end (212) of the socket housing for welding with an external wire; epoxy resin glue is poured into the ring end (212) of the socket housing, and after the epoxy resin glue is cured, a solidified colloid (b) is formed to seal the pin hole welding cup (2211), and the colloid (b) is more firmly bonded to the fine thread section (a), thereby further sealing the socket member (22).

6. A waterproof connector for a ship cleaning robot according to claim 1, characterized in that: The connecting shell (40) is sleeved on the plug shell (11); one end surface of the connecting shell (40) is provided with a full circle of inwardly facing locking positions (41), and the other end is provided with internal threads (42); the plug shell connecting end (111) is inserted into the socket shell connecting end (211), wherein the hole end insulator (222) is inserted into the pin insulator (122), and the pin (121) is located in the pin hole (221); the connecting shell (40) is screwed until the locking position (41) is locked on the right end surface of the step position (1111) of the plug shell connecting end (111), and the external threads (2114) on the socket shell connecting end (211) are matched and locked with the internal threads (42) of the connecting shell (40), so that the overall installation of the connector body (100) is realized.

7. A waterproof connector for a ship cleaning robot according to claim 1, characterized in that: A tail plate nut (113) is installed outside the ring end (112) of the plug housing.

8. The waterproof connector for a ship cleaning robot according to claim 1, characterized in that: The connector body (100) is made of stainless steel 316L and is passivated on the surface.

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