A watertight rotating shaft with electrical connection function

Abstract

The application provides a watertight rotating shaft with electrical connection function, which comprises a watertight bulkhead, a watertight mounting base, a watertight rotating shaft shell and an electrical connection device, the watertight mounting base is fixedly connected to the watertight bulkhead in a sealing mode, one end of the watertight rotating shaft shell is mounted on the watertight bulkhead through the watertight mounting base, the electrical connection device is mounted on the other end of the watertight rotating shaft shell, and the watertight rotating shaft shell can rotate relative to the watertight mounting base around an axis. The application can realize watertight and relative rotation of electrical connection between two underwater two-stage electromechanical devices, and has the advantages of simple structure, clear function division and strong modularization.

Description

Technical Field

[0001] This invention belongs to the field of underwater electromechanical technology, specifically relating to a watertight rotating shaft with electrical connection function. Background Technology

[0002] In general applications, underwater electrical signal transmission is achieved through equipment such as watertight cables and watertight connectors. Watertight cables use rubber or other materials as an outer sheath to isolate the internal metal conductors from the external water environment, ensuring reliable signal transmission. However, in certain special applications, the downstream mechanism connected to the watertight cable may experience relative movement, causing deformation of the cable and potentially leading to breakage of the internal core. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a watertight rotating shaft with electrical connection function. The solution of this invention can solve the problems existing in the prior art.

[0004] The technical solution of this invention:

[0005] A watertight rotating shaft with electrical connection function includes a watertight bulkhead, a watertight mounting base, a watertight rotating shaft housing, and an electrical connection device. The watertight mounting base is sealed and fixedly connected to the watertight bulkhead. One end of the watertight rotating shaft housing is mounted on the watertight bulkhead through the watertight mounting base, and the electrical connection device is mounted on the other end of the watertight rotating shaft housing. The watertight rotating shaft housing can rotate about an axis relative to the watertight mounting base.

[0006] Furthermore, the watertight bulkhead includes a watertight bulkhead opening and a base mounting threaded hole. The watertight bulkhead opening serves as a channel for connecting the electrical connection equipment to the equipment inside the watertight bulkhead. The channel base mounting threaded hole mates with the mounting hole provided on the watertight mounting base to fix the watertight mounting base.

[0007] Furthermore, the watertight mounting base includes a base housing, a base cover plate, a sealing component mounting unit, a retaining ring, and a bearing. The base housing is fixed to the watertight chamber wall through the channel base mounting threaded hole. A through hole one is provided inside the base housing for installing the watertight rotating shaft housing. The sealing component mounting unit, retaining ring, and bearing are installed between the outer side of the watertight rotating shaft housing and the through hole. A through hole two is provided on the base cover plate, and the diameter of the through hole two is larger than the diameter of the watertight rotating shaft housing. The base cover plate is fixed to the end face of the base housing away from the watertight chamber wall.

[0008] Furthermore, the sealing assembly mounting unit includes a plug mounting bracket and an O-ring mounting bracket.

[0009] Furthermore, the base housing includes: a base housing mounting hole, a base cover plate mounting hole, a first cavity, a second cavity, a third cavity, an axial sealing O-ring groove, a radial sealing O-ring groove, a first cavity shoulder, and a second cavity shoulder; the base housing is mounted on the base mounting threaded hole through the base housing mounting hole; the plug mounting bracket and the O-ring mounting bracket are installed inside the first cavity and pressed together by the base cover plate and the first cavity shoulder; the retaining ring and the bearing are installed inside the second cavity, and the watertight rotating shaft housing is also included. The water pressure transmitted from the body presses the retaining ring and bearing tightly onto the shoulder of the second cavity; the third cavity is a circular through hole through which the watertight rotating shaft housing passes; the mounting hole for the base cover plate is located on the end face of the base housing for mounting the base cover plate, and is used to fix the base cover plate; the axial sealing O-ring groove is located on the end face of the base housing that fits against the outer side of the watertight chamber wall, and the radial sealing O-ring groove is located on the side surface of the outer wall of the third cavity of the base housing that fits against the inner wall of the opening of the watertight chamber wall.

[0010] Furthermore, an O-ring is installed in the axial sealing O-ring groove to form an axial seal with the outer surface of the watertight bulkhead, and an O-ring is installed in the radial sealing O-ring groove to form a radial seal with the opening of the watertight bulkhead.

[0011] Preferably, the plug mounting bracket is located near the base cover plate, and the O-ring mounting bracket is located on the side of the plug mounting bracket away from the base cover plate.

[0012] Furthermore, the plug mounting bracket includes: a radial sealing O-ring groove and a plug mounting groove, wherein the radial sealing O-ring groove is located on the outer circumference of the plug mounting bracket, and the plug mounting groove is located in the cavity inside the plug mounting bracket.

[0013] Furthermore, an O-ring is installed in the radial sealing O-ring groove to form a radial seal with the cylindrical wall of the first cavity, and a plug is installed in the plug mounting groove to form a radial dynamic seal with the outer wall of the watertight rotating shaft housing.

[0014] Furthermore, the O-ring mounting bracket includes a second radial sealing O-ring groove and an inner O-ring mounting groove. The second radial sealing O-ring groove is located on the outer circumference of the O-ring mounting bracket, and the inner O-ring mounting groove is located in the cavity inside the O-ring mounting bracket.

[0015] Furthermore, an O-ring two is installed in the radial sealing O-ring groove two to form a radial seal with the cylindrical wall surface of the first cavity, and an O-ring three is installed in the internal O-ring mounting groove to form a radial dynamic seal with the outer wall surface of the watertight rotating shaft housing.

[0016] Furthermore, the base cover plate includes: a pressing boss and a base cover plate mounting hole. The pressing boss extends into the first cavity to press the plug mounting bracket and the O-ring mounting bracket against the shoulder of the first cavity hole. The base cover plate is installed on the base cover plate mounting threaded hole through the base cover plate mounting hole and is fixed by bolts.

[0017] Furthermore, the watertight rotating shaft housing includes: a watertight electrical connector mounting threaded hole, a watertight connector mounting shaft hole, a rotating shaft housing transmission mating surface, a snap ring mounting groove, a set screw mounting threaded hole, and a conductive slip ring mounting shoulder. The watertight connector mounting shaft hole is located on the end face of the watertight rotating shaft housing that contacts the watertight electrical connector, serving as a channel for electrical connection between the watertight electrical connector and the interior of the watertight rotating shaft housing. The watertight electrical connector mounting threaded hole is located around the watertight connector mounting shaft hole for fixing the watertight electrical connector. The rotating shaft housing transmission mating surface is located on the outer circumference of the watertight rotating shaft housing. The upper part is a plane parallel and symmetrical to the axis of symmetry of the watertight rotating shaft housing. It serves as a mating surface for connecting with the next-level mechanical device, allowing the watertight rotating shaft housing to rotate with the next-level mechanical device. The retaining ring mounting groove is located on the outer circumference of the watertight rotating shaft housing and is located in the second cavity after installation. The retaining ring is installed inside to fix the bearing in the axial position. The conductive slip ring mounting hole shoulder is located on the end face of the watertight rotating shaft housing near the watertight mounting base and is used to install the conductive slip ring. The set screw mounting threaded hole is located on the watertight rotating shaft housing near the conductive slip ring mounting hole shoulder and is used to fix the conductive slip ring.

[0018] Furthermore, the electrical connection equipment includes: a conductive slip ring, a watertight connector, internal cabling, and internal housing cabling. The conductive slip ring is fixed inside the watertight rotating shaft housing. The watertight connector is installed on the end face of the watertight rotating shaft housing away from the watertight chamber wall. The internal housing cabling is located inside the watertight rotating shaft housing and connects one end of the watertight connector and the conductive slip ring. The internal cabling is located inside the watertight chamber and connects the internal equipment to the other end of the conductive slip ring. The conductive slip ring stator can rotate relative to the rotor along an axis of axial symmetry and is electrically connected through the internal slip ring and brushes. The rotor can rotate with the watertight rotating shaft housing.

[0019] Furthermore, the conductive slip ring includes: a conductive slip ring rotor, a conductive slip ring stator, rotor lead wires, stator lead wires, a conductive slip ring mounting shoulder, and a set screw mounting hole. The conductive slip ring rotor can rotate relative to the conductive slip ring stator along an axis of axial symmetry and is electrically connected through internal slip rings and brushes. One end of the rotor lead wire is connected to the conductive slip ring rotor, and the other end is connected to a cable inside the housing. One end of the stator lead wire is connected to the conductive slip ring stator, and the other end is connected to a cable inside the housing. The conductive slip ring mounting shoulder is located on the outer periphery of the conductive slip ring rotor and mates with the conductive slip ring mounting hole shoulder. The set screw mounting hole is located on the outer periphery of the conductive slip ring rotor and mates with the set screw mounting thread hole, thereby connecting the conductive slip ring rotor to the watertight rotating shaft housing using fasteners.

[0020] Furthermore, the watertight connector includes: a mounting hole, a radial sealing O-ring groove three, an axial sealing O-ring groove one, and an internal core point. The mounting hole is located on the end face where the watertight connector connects to the watertight rotating shaft housing, and mates with the mounting threaded hole of the watertight electrical connector to fix the watertight connector to the watertight rotating shaft housing. The radial sealing O-ring groove three is located on the end face where it connects to the watertight rotating shaft housing, and a radial sealing O-ring three is installed therein. The axial sealing O-ring groove one is located on the outer surface of the cavity that mates with the mounting shaft hole of the watertight connector, and an axial sealing O-ring one is installed therein. The internal core point of the connector is connected to the cable inside the housing.

[0021] The beneficial effects of this invention compared to the prior art are as follows:

[0022] The watertight rotating shaft with electrical connection function of the present invention is designed for application scenarios where there is reciprocating oscillation or continuous rotation between two underwater electromechanical devices. It can achieve watertight electrical connection and relative rotation between devices, and has the advantages of simple structure, clear functional division and strong modularity. Attached Figure Description

[0023] The accompanying drawings, which form part of this specification, are provided to further illustrate embodiments of the invention and, together with the textual description, explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0024] Figure 1 A schematic diagram of a watertight rotating shaft structure with electrical connection function provided according to an embodiment of the present invention is shown;

[0025] Figure 2A schematic diagram of a watertight bulkhead provided according to an embodiment of the present invention is shown;

[0026] Figure 3 A cross-sectional schematic diagram of a watertight rotating shaft with electrical connection function provided according to an embodiment of the present invention is shown;

[0027] Figure 4 A schematic cross-sectional view of a watertight mounting base provided according to an embodiment of the present invention is shown.

[0028] Figure 5 A schematic cross-sectional view of a base cover plate provided according to an embodiment of the present invention is shown;

[0029] Figure 6 A schematic cross-sectional view of a plug mounting bracket provided according to an embodiment of the present invention is shown;

[0030] Figure 7 A schematic cross-sectional view of an O-ring mounting bracket provided according to an embodiment of the present invention is shown;

[0031] Figure 8 A schematic cross-sectional view of a watertight rotating shaft housing provided according to an embodiment of the present invention is shown.

[0032] Figure 9 A schematic diagram of a conductive slip ring provided according to an embodiment of the present invention is shown;

[0033] Figure 10 A schematic diagram of a watertight connector provided according to an embodiment of the present invention is shown.

[0034] The above figures include the following reference numerals:

[0035] 1. Watertight bulkhead; 11. Outer surface of watertight bulkhead; 12. Inner surface of watertight bulkhead; 13. Watertight bulkhead opening; 14. Threaded hole for base mounting; 2. Watertight mounting base; 21. Base housing; 22. Base cover plate; 23. Plug mounting bracket; 24. O-ring mounting bracket; 25. Snap ring retainer; 26. Bearing; 3. Watertight rotating shaft housing; 31. Threaded hole for watertight electrical connector mounting; 32. Threaded hole for watertight electrical connector mounting; 33. Transmission mating surface of rotating shaft housing; 34. Snap ring retainer mounting groove; 35. Threaded hole for set screw mounting; 36. Shoulder of conductive slip ring mounting hole; 4. Electrical connection equipment; 41. Conductive slip ring; 42. Watertight electrical connector; 43. Internal cabling of the hull; 44. Internal cabling of the hull; 211. Mounting hole for base housing; 212. Mounting hole for base cover plate. 213. Threaded hole; 214. First cavity; 215. Second cavity; 216. Third cavity; 217. Axial sealing O-ring groove; 218. Radial sealing O-ring groove; 219. First cavity shoulder; 221. Pressing boss; 222. Base cover plate mounting hole; 231. Radial sealing O-ring groove one; 232. Plug mounting groove; 241. Radial sealing O-ring groove two; 242. Internal O-ring mounting groove; 411. Conductive slip ring rotor; 412. Conductive slip ring stator; 413. Stator lead wire; 414. Rotor lead wire; 415. Conductive slip ring mounting shoulder; 416. Set screw mounting hole; 421. Mounting hole; 422. Radial sealing O-ring groove three; 423. Axial sealing O-ring groove one; 424. Connector internal core point. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] like Figure 1 As shown, according to an embodiment of the present invention, a watertight rotating shaft with electrical connection function is provided, including a watertight bulkhead, a watertight mounting base, a watertight rotating shaft housing, and electrical connection equipment. The watertight mounting base is sealed and fixedly connected to the watertight bulkhead. One end of the watertight rotating shaft housing is mounted on the watertight bulkhead via the watertight mounting base, and the electrical connection equipment is mounted on the other end of the watertight rotating shaft housing. The watertight rotating shaft housing can rotate about an axis relative to the watertight mounting base. With this configuration, while the rotating shaft is watertight, even when there is relative movement in the next-level mechanism connected to the watertight cable, the rotation of the watertight rotating shaft housing about the axis relative to the watertight mounting base keeps the cable internally stationary, thereby protecting the cable's core from breakage.

[0040] In a further embodiment, the watertight bulkhead includes a watertight bulkhead opening and a base mounting threaded hole. The watertight bulkhead opening serves as a channel for connecting electrical connection equipment to equipment inside the watertight bulkhead. The base mounting threaded hole mates with a mounting hole provided on the watertight mounting base for fixing the watertight mounting base.

[0041] In a further embodiment, the watertight mounting base includes a base housing, a base cover plate, a sealing component mounting unit, a retaining ring, and a bearing. The base housing is fixed to the watertight chamber wall through a base mounting threaded hole. A through hole one is provided inside the base housing for installing the watertight rotating shaft housing. The sealing component mounting unit, retaining ring, and bearing are installed between the outer side of the watertight rotating shaft housing and the through hole. A through hole two is provided on the base cover plate, the diameter of which is larger than the diameter of the watertight rotating shaft housing. The base cover plate is fixed to the end face of the base housing away from the watertight chamber wall.

[0042] In a further embodiment, the sealing assembly mounting unit includes a plug mounting bracket and an O-ring mounting bracket.

[0043] In a further embodiment, the base housing includes: a base housing mounting hole, a base cover plate mounting hole, a first cavity, a second cavity, a third cavity, an axial sealing O-ring groove, a radial sealing O-ring groove, a first cavity shoulder, and a second cavity shoulder. The base housing is mounted on the base mounting threaded hole through the base housing mounting hole. The plug mounting bracket and the O-ring mounting bracket are installed inside the first cavity and are pressed together by the base cover plate and the first cavity shoulder. The retaining ring and the bearing are installed inside the second cavity and are pressed together on the second cavity shoulder by the water pressure transmitted from the watertight rotating shaft housing. The third cavity is a circular through hole through which the watertight rotating shaft housing passes. The base cover plate mounting hole is provided on the end face of the base housing for mounting the base cover plate and is used to fix the base cover plate. The axial sealing O-ring groove is provided on the end face of the base housing that fits against the outer side of the watertight chamber wall, and the radial sealing O-ring groove is provided on the side surface of the outer wall of the third cavity of the base housing that fits against the inner wall of the opening of the watertight chamber wall.

[0044] In a further embodiment, an O-ring is installed in the axial sealing O-ring groove to form an axial seal with the outer surface of the watertight bulkhead, and an O-ring is installed in the radial sealing O-ring groove to form a radial seal with the opening of the watertight bulkhead.

[0045] In a preferred embodiment, the Pan-Screw mounting bracket is located near the base cover plate, and the O-ring mounting bracket is located on the side of the Pan-Screw mounting bracket away from the base cover plate.

[0046] In a further embodiment, the plug mounting bracket includes: a radial sealing O-ring groove and a plug mounting groove, wherein the radial sealing O-ring groove is located on the outer circumference of the plug mounting bracket, and the plug mounting groove is located in a cavity inside the plug mounting bracket.

[0047] In a further embodiment, an O-ring is installed in the radial sealing O-ring groove to form a radial seal with the cylindrical wall of the first cavity, and a plug is installed in the plug mounting groove to form a radial dynamic seal with the outer wall of the watertight rotating shaft housing.

[0048] In a further embodiment, the O-ring mounting bracket includes a second radial sealing O-ring groove and an inner O-ring mounting groove. The second radial sealing O-ring groove is located on the outer circumference of the O-ring mounting bracket, and the inner O-ring mounting groove is located in the cavity inside the O-ring mounting bracket.

[0049] In a further embodiment, an O-ring two is installed in the radial sealing O-ring groove two to form a radial seal with the cylindrical wall surface of the first cavity, and an O-ring three is installed in the internal O-ring mounting groove to form a radial dynamic seal with the outer wall surface of the watertight rotating shaft housing.

[0050] In a further embodiment, the watertight rotating shaft housing includes: a watertight electrical connector mounting threaded hole, a watertight connector mounting shaft hole, a rotating shaft housing transmission mating surface, a snap ring mounting groove, a set screw mounting threaded hole, and a conductive slip ring mounting shoulder. The watertight connector mounting shaft hole is located on the end face of the watertight rotating shaft housing that contacts the watertight electrical connector, serving as a channel for electrical connection between the watertight electrical connector and the interior of the watertight rotating shaft housing. The watertight electrical connector mounting threaded hole is located around the watertight connector mounting shaft hole for fixing the watertight electrical connector. The rotating shaft housing transmission mating surface is located on the outer circumference of the watertight rotating shaft housing. On the circumference of the watertight rotating shaft housing, there is a plane that is parallel and symmetrical to the axis of symmetry of the watertight rotating shaft housing. This plane serves as a mating surface for connection with the next-level mechanical device, allowing the watertight rotating shaft housing to rotate with the next-level mechanical device. The retaining ring mounting groove is located on the outer circumference of the watertight rotating shaft housing and is positioned within the second cavity after installation. The retaining ring is installed inside the groove to fix the bearing in the axial position. The conductive slip ring mounting hole shoulder is located on the end face of the watertight rotating shaft housing near the watertight mounting base and is used to install the conductive slip ring. The set screw mounting threaded hole is located on the watertight rotating shaft housing near the conductive slip ring mounting hole shoulder and is used to fix the conductive slip ring.

[0051] In a further embodiment, the electrical connection device includes: a conductive slip ring, a watertight connector, internal cables of the cabin, and internal cables of the housing. The conductive slip ring is fixed inside the watertight rotating shaft housing. The watertight connector is installed on the end face of the watertight rotating shaft housing away from the watertight cabin wall. The internal cables of the housing are located inside the watertight rotating shaft housing and connect one end of the watertight connector and the conductive slip ring. The internal cables of the cabin are located inside the watertight cabin and connect the equipment inside the cabin to the other end of the conductive slip ring. The conductive slip ring stator can rotate relative to the rotor along the axis and is electrically connected through the internal slip ring and brushes. The rotor can rotate with the watertight rotating shaft housing.

[0052] In a further embodiment, the conductive slip ring includes: a conductive slip ring rotor, a conductive slip ring stator, rotor lead wires, stator lead wires, a conductive slip ring mounting shoulder, and a set screw mounting hole. The conductive slip ring rotor is rotatable relative to the conductive slip ring stator along an axis of axial symmetry and is electrically connected through internal slip rings and brushes. One end of the rotor lead wire is connected to the conductive slip ring rotor, and the other end is connected to a cable inside the housing. One end of the stator lead wire is connected to the conductive slip ring stator, and the other end is connected to a cable inside the housing. The conductive slip ring mounting shoulder is located on the outer periphery of the conductive slip ring rotor and mates with the conductive slip ring mounting hole shoulder for installation. The set screw mounting hole is located on the outer periphery of the conductive slip ring rotor and mates with the set screw mounting thread hole, thereby connecting the conductive slip ring rotor to the watertight rotating shaft housing using fasteners.

[0053] In a further embodiment, the watertight connector includes: a mounting hole, a radial sealing O-ring groove three, an axial sealing O-ring groove one, and an internal core point of the connector. The mounting hole is located on the end face where the watertight connector connects to the watertight rotating shaft housing, and mates with the mounting threaded hole of the watertight electrical connector to fix the watertight connector to the watertight rotating shaft housing. The radial sealing O-ring groove three is located on the end face where it connects to the watertight rotating shaft housing, and a radial sealing O-ring three is installed therein. The axial sealing O-ring groove one is located on the outer surface of the cavity that mates with the mounting shaft hole of the watertight connector, and an axial sealing O-ring one is installed therein. The internal core point of the connector is connected to the cable inside the housing.

[0054] A watertight rotating shaft with electrical connection function includes four parts: a watertight bulkhead 1, a watertight mounting base 2, a watertight rotating shaft housing 3, and an electrical connection device 4. One end of the watertight rotating shaft housing 3 is mounted on the watertight bulkhead 1 via the watertight mounting base 2, and the electrical connection device 4 is mounted on the other end of the watertight rotating shaft housing 3 for external electrical connection. The watertight mounting base 2 is fixed relative to the watertight bulkhead 1, and the watertight rotating shaft housing 3 can rotate about an axis relative to the watertight mounting base 2.

[0055] like Figure 2 As shown, the watertight bulkhead 1 includes: an outer surface 11, an inner surface 12, an opening 13, and a mounting threaded hole 14. The watertight bulkhead 1 isolates the external aquatic environment. The outer surface 11 is in contact with water, while the inner surface 12 is not. Non-watertight equipment is installed within the watertight bulkhead 1. The opening 13 is a circular through-hole, serving as a channel for electrical connections between equipment inside and outside the watertight bulkhead 1. The mounting threaded hole 14 is used to install and fix the watertight mounting base 2.

[0056] like Figure 3-4As shown, the watertight mounting base 2 includes: a base housing 21, a base cover plate 22, a plug mounting bracket 23, an O-ring mounting bracket 24, a retaining ring 25, and a rolling bearing 26. The base housing 21 includes: a base housing mounting hole 211, a base cover plate mounting threaded hole 212, a first cavity 213, a second cavity 214, a third cavity 215, an axial sealing O-ring groove 216, a radial sealing O-ring groove 217, a first cavity shoulder 218, and a second cavity shoulder 219. The base housing 21 is mounted on the base mounting threaded hole 14 through the base housing mounting hole 211 and fixed with bolts. The plug mounting bracket 23 and the O-ring mounting bracket 24 are installed inside the first cavity 213, with the plug mounting bracket 23 on the outside and the O-ring mounting bracket 24 on the inside, and are pressed together by the base cover plate 22 and the first cavity shoulder 218. The retaining ring 25 and bearing 26 are installed inside the second cavity 214. Under the pressure of water transmitted from the watertight rotating shaft housing 3, the retaining ring 25 and bearing 26 are pressed against the shoulder 219 of the second cavity. The third cavity 215 is a circular through-hole through which the watertight rotating shaft housing 3 passes. An O-ring is installed in the axial sealing O-ring groove 216, forming an axial seal with the outer surface 11 of the watertight bulkhead. An O-ring is installed in the radial sealing O-ring groove 217, forming a radial seal with the opening 13 of the watertight bulkhead.

[0057] like Figure 3 As shown, the electrical connection device 4 includes: a conductive slip ring 41, a watertight connector 42, an internal cable 43, and an internal cable 44. The conductive slip ring 41 is installed inside the watertight rotating shaft housing 3, and the watertight connector 42 is installed on the outer end face of the watertight rotating shaft housing 3. The internal cable 43 connects the conductive slip ring 41 to the equipment inside the watertight bulkhead 1, and the internal cable 44 connects the conductive slip ring 41 to the watertight connector 42. The watertight connector 42 connects to the next-level equipment in the water, thereby forming an electrical connection channel from the equipment inside the watertight bulkhead 1 to the next-level equipment in the water.

[0058] like Figure 5 As shown, the base cover plate 22 includes a clamping boss 221 and a base cover plate mounting hole 222. The clamping boss 221 extends into the first cavity 213, pressing the plug mounting bracket 23 and the O-ring mounting bracket 24 against the shoulder 218 of the first cavity. The base cover plate 22 is mounted on the base cover plate mounting threaded hole 212 through the base cover plate mounting hole 222 and is fixed by bolts.

[0059] like Figure 6 As shown, the plug mounting bracket 23 includes: a radial sealing O-ring groove 231 and a plug mounting groove 232. An O-ring is installed in the radial sealing O-ring groove 231 to form a radial seal with the cylindrical wall surface of the first cavity 213. A plug is installed in the plug mounting groove 232 to form a radial dynamic seal with the outer wall surface of the watertight rotating shaft housing 3.

[0060] like Figure 7 As shown, the O-ring mounting bracket 24 includes: a radial sealing O-ring groove 241 and an internal O-ring mounting groove 242. An O-ring is installed in the radial sealing O-ring groove 241, forming a radial seal with the cylindrical wall surface of the first cavity 213. An O-ring is installed in the internal O-ring mounting groove 242, forming a radial dynamic seal with the outer wall surface of the watertight rotating shaft housing 3.

[0061] like Figure 8 As shown, the watertight rotating shaft housing 3 includes: a watertight electrical connector mounting threaded hole 31, a watertight connector mounting shaft hole 32, a rotating shaft housing transmission mating surface 33, a snap ring retaining ring mounting groove 34, a set screw mounting threaded hole 35, and a conductive slip ring mounting shoulder 36. The watertight electrical connector mounting threaded hole 31 is used to install a watertight connector 42. The watertight connector mounting shaft hole 32 serves as a channel for electrical connection between the watertight connector 42 and the interior of the housing, while also forming a radial seal with the watertight connector 42. The rotating shaft housing transmission mating surface 33 is a mating surface for connection with the next-level mechanical device, allowing the watertight rotating shaft housing 3 to rotate with the next-level mechanical device. The snap ring retaining ring mounting groove 34 is used to install a snap ring retaining ring 25, fixing the axial position of the watertight rotating shaft housing 3 and the snap ring retaining ring 25 relative to each other. The set screw mounting threaded hole 35 and the conductive slip ring mounting shoulder 36 install and fix the conductive slip ring 41 inside the watertight rotating shaft housing 3. The shoulder 36 of the conductive slip ring mounting hole is used for axial positioning of the conductive slip ring 41. The set screw is installed in the threaded hole 35 of the set screw mounting hole to ensure that the conductive slip ring 41 and the watertight rotating shaft housing 3 are relatively fixed in the axial and circumferential directions.

[0062] When operating underwater, the watertight rotating shaft housing 3 is pressed against the watertight bulkhead 1 by the water pressure, clamping the retaining ring 25 and further pressing the bearing 26 against the shoulder 219 of the second cavity, preventing the watertight rotating shaft housing 3 from being forced into the watertight bulkhead 1. Simultaneously, the outer diameter of the retaining ring 25 is larger than the inner diameter of the O-ring mounting bracket 24, preventing the watertight rotating shaft housing 3 from being pulled out of the watertight mounting base 2. The watertight rotating shaft housing 3 and the watertight mounting base 2 are axially fixed but can rotate freely in the circumferential direction.

[0063] like Figure 9As shown, the conductive slip ring 41 includes: a conductive slip ring rotor 411, a conductive slip ring stator 412, a rotor lead wire 413, a stator lead wire 414, a conductive slip ring mounting shoulder 415, and a set screw mounting hole 416. The conductive slip ring rotor 411 and the conductive slip ring stator 412 can rotate relative to each other around an axis and are electrically connected through internal slip rings and brushes. The stator lead wire 413 is connected to equipment inside the watertight bulkhead 1, forming an internal cable 43. The rotor lead wire 414 is connected to a watertight connector 42, forming an internal cable 44. The conductive slip ring mounting shoulder 415 is fixed relative to the conductive slip ring mounting hole shoulder 36, and the set screw mounting hole 416 is fixed relative to the set screw installed in the set screw mounting threaded hole 35. The conductive slip ring rotor 411 can rotate together with the watertight rotating shaft housing 3.

[0064] like Figure 10 As shown, the watertight connector 42 includes: a mounting hole 421, a radial sealing O-ring groove 3 422, an axial sealing O-ring groove 1 423, and an internal connector core point 424. The watertight connector 42 is mounted on the watertight electrical connector mounting threaded hole 31 through the mounting hole 421 and fixed with bolts. The radial sealing O-ring groove 3 422 mounts the radial sealing O-ring 3 to form a radial seal between it and the watertight connector mounting shaft hole 32. The axial sealing O-ring groove 1 423 mounts the axial sealing O-ring 1 to form an axial seal between it and the end face of the watertight rotating shaft housing 3. The internal connector core point 424 is connected to the rotor lead wire 413 to form an internal cable 44.

[0065] In terms of electrical connection, the above equipment consists of internal cables 43, conductive slip ring stator 412, conductive slip ring rotor 411, internal cables 44, and watertight electrical connectors 42, forming an electrical connection channel from the equipment inside the watertight bulkhead 1 to the equipment in the water.

[0066] In terms of mechanical rotation, the watertight bulkhead 1, watertight mounting base 2, conductive slip ring stator 412, and internal cable 43 are stationary parts, while the watertight rotating shaft housing 3, watertight electrical connector 42, internal cable 44, and conductive slip ring rotor 411 are rotating parts. The rotating parts can rotate around the axis relative to the stationary parts.

[0067] Regarding watertightness, there is an axial seal and a radial seal between the watertight mounting base 2 and the watertight bulkhead 1; there is a radial seal between the base housing 21 and the plug mounting bracket 23 and the O-ring mounting bracket 24; there is a radial dynamic seal between the watertight rotating shaft housing 3 and the plug mounting bracket 23 and the O-ring mounting bracket 24; and there is an axial seal and a radial seal between the watertight rotating shaft housing 3 and the watertight electrical connector 42. All gaps are effectively sealed.

[0068] In summary, the watertight rotating shaft with electrical connection function provided by the present invention has at least the following advantages compared with the prior art:

[0069] The watertight rotating shaft with electrical connection function of the present invention is designed for application scenarios where there is reciprocating oscillation or continuous rotation between two underwater electromechanical devices. It can achieve watertight electrical connection and relative rotation between devices, and has the advantages of simple structure, clear functional division and strong modularity.

[0070] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0071] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0072] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A watertight rotating shaft with electrical connection function, characterized in that, The device includes a watertight bulkhead, a watertight mounting base, a watertight rotating shaft housing, and electrical connection equipment. The watertight mounting base is sealed and fixedly connected to the watertight bulkhead. One end of the watertight rotating shaft housing is mounted on the watertight bulkhead through the watertight mounting base, and the electrical connection equipment is mounted on the other end of the watertight rotating shaft housing. The watertight rotating shaft housing can rotate about an axis relative to the watertight mounting base. The watertight rotating shaft housing includes: a watertight electrical connector mounting threaded hole, a watertight connector mounting shaft hole, a rotating shaft housing transmission mating surface, a snap ring mounting groove, a set screw mounting threaded hole, and a conductive slip ring mounting shoulder. The watertight connector mounting shaft hole is located on the end face of the watertight rotating shaft housing that contacts the watertight electrical connector, serving as a channel for electrical connection between the watertight electrical connector and the interior of the watertight rotating shaft housing. The watertight electrical connector mounting threaded hole is located around the watertight connector mounting shaft hole, used to fix the watertight electrical connector. The rotating shaft housing transmission mating surface is located on the outer circumference of the watertight rotating shaft housing, serving as... The plane parallel and symmetrical to the axis of symmetry of the watertight rotating shaft housing serves as a mating surface for connection with the next-level mechanical device, allowing the watertight rotating shaft housing to rotate with the next-level mechanical device. The retaining ring mounting groove is located on the outer circumference of the watertight rotating shaft housing and, after installation, is located in the second cavity, where a retaining ring is installed to fix the bearing in the axial position. The conductive slip ring mounting hole shoulder is located on the end face of the watertight rotating shaft housing near the watertight mounting base and is used to install the conductive slip ring. The set screw mounting threaded hole is located on the watertight rotating shaft housing near the conductive slip ring mounting hole shoulder and is used to fix the conductive slip ring. The electrical connection equipment includes: a conductive slip ring, a watertight connector, internal cables of the cabin and internal cables of the housing. The conductive slip ring is fixed inside the watertight rotating shaft housing. The watertight connector is installed on the end face of the watertight rotating shaft housing away from the watertight cabin wall. The internal cables of the housing are located inside the watertight rotating shaft housing and connect one end of the watertight connector and the conductive slip ring. The internal cables of the cabin are located inside the watertight cabin and connect the equipment inside the cabin to the other end of the conductive slip ring. The watertight connector includes: a mounting hole, a radial sealing O-ring groove three, an axial sealing O-ring groove one, and an internal connector core point, wherein the internal connector core point is connected to the cable inside the housing; The conductive slip ring includes: a conductive slip ring rotor, a conductive slip ring stator, rotor lead wires, stator lead wires, a conductive slip ring mounting shoulder, and a set screw mounting hole. The conductive slip ring rotor can rotate relative to the conductive slip ring stator along an axis of axial symmetry and is electrically connected through internal slip rings and brushes. One end of the rotor lead wire is connected to the conductive slip ring rotor, and the other end is connected to a cable inside the housing. One end of the stator lead wire is connected to the conductive slip ring stator, and the other end is connected to a cable inside the housing. The conductive slip ring mounting shoulder is located on the outer periphery of the conductive slip ring rotor and mates with the conductive slip ring mounting hole shoulder. The set screw mounting hole is located on the outer periphery of the conductive slip ring rotor and mates with the set screw mounting thread hole, thereby connecting the conductive slip ring rotor to the watertight rotating shaft housing using fasteners.

2. A watertight rotating shaft with electrical connection function according to claim 1, characterized in that, The watertight bulkhead includes a watertight bulkhead opening and a base mounting threaded hole. The watertight bulkhead opening serves as a channel for connecting the electrical connection equipment to the equipment inside the watertight bulkhead. The base mounting threaded hole mates with the mounting hole provided on the watertight mounting base to fix the watertight mounting base.

3. A watertight rotating shaft with electrical connection function according to claim 2, characterized in that, The watertight mounting base includes a base housing, a base cover plate, a sealing component mounting unit, a retaining ring, and a bearing. The base housing is fixed to the watertight chamber wall through the base mounting threaded hole. A through hole is provided inside the base housing for mounting the watertight rotating shaft housing. The sealing component mounting unit, retaining ring, and bearing are installed between the outer side of the watertight rotating shaft housing and the through hole. A second through hole is provided on the base cover plate, the diameter of which is larger than the diameter of the watertight rotating shaft housing. The base cover plate is fixed to the end face of the base housing away from the watertight chamber wall.

4. A watertight rotating shaft with electrical connection function according to claim 3, characterized in that, The sealing assembly mounting unit includes a plug mounting bracket and an O-ring mounting bracket; The base housing includes: a base housing mounting hole, a base cover plate mounting hole, a first cavity, a second cavity, a third cavity, an axial sealing O-ring groove, a radial sealing O-ring groove, a first cavity shoulder, and a second cavity shoulder. The base housing is mounted on the base mounting threaded hole through the base housing mounting hole. The plug mounting bracket and the O-ring mounting bracket are installed inside the first cavity and pressed together by the base cover plate and the first cavity shoulder. The retaining ring and the bearing are installed inside the second cavity and are mounted on the watertight rotating shaft housing. The applied water pressure presses the retaining ring and bearing tightly onto the shoulder of the second cavity; the third cavity is a circular through hole through which the watertight rotating shaft housing passes; the mounting hole for the base cover plate is located on the end face of the base housing for mounting the base cover plate, and is used to fix the base cover plate; the axial sealing O-ring groove is located on the end face of the base housing that fits against the outer side of the watertight chamber wall, and the radial sealing O-ring groove is located on the side surface of the outer wall of the third cavity of the base housing that fits against the inner wall of the opening of the watertight chamber wall.

5. A watertight rotating shaft with electrical connection function according to claim 4, characterized in that, The base cover plate includes a pressing boss and a base cover plate mounting hole. The pressing boss extends into the first cavity and presses the plug mounting bracket and the O-ring mounting bracket against the shoulder of the first cavity hole. The base cover plate is installed on the base cover plate mounting threaded hole through the base cover plate mounting hole and is fixed by bolts.

6. A watertight rotating shaft with electrical connection function according to claim 5, characterized in that, An O-ring is installed in the axial sealing O-ring groove to form an axial seal with the outer surface of the watertight bulkhead; an O-ring is installed in the radial sealing O-ring groove to form a radial seal with the opening of the watertight bulkhead. The aforementioned plug mounting bracket includes: a radial sealing O-ring groove and a plug mounting groove, wherein the radial sealing O-ring groove is located on the outer circumference of the plug mounting bracket, and the plug mounting groove is located in the cavity inside the plug mounting bracket; An O-ring is installed in the radial sealing O-ring groove to form a radial seal with the cylindrical wall of the first cavity; a plug is installed in the plug mounting groove to form a radial dynamic seal with the outer wall of the watertight rotating shaft housing. The O-ring mounting bracket includes a second radial sealing O-ring groove and an inner O-ring mounting groove. The second radial sealing O-ring groove is located on the outer circumference of the O-ring mounting bracket, and the inner O-ring mounting groove is located in the cavity inside the O-ring mounting bracket. O-ring 2 is installed in the radial sealing O-ring groove 2 to form a radial seal with the cylindrical wall of the first cavity. O-ring 3 is installed in the internal O-ring mounting groove to form a radial dynamic seal with the outer wall of the watertight rotating shaft housing.

7. A watertight rotating shaft with electrical connection function according to claim 6, characterized in that, The mounting hole is located on the end face where the watertight connector connects to the watertight rotating shaft housing, and mates with the mounting threaded hole of the watertight electrical connector to fix the watertight connector to the watertight rotating shaft housing. The radial sealing O-ring groove three is located on the end face where it connects to the watertight rotating shaft housing, and the radial sealing O-ring three is installed therein. The axial sealing O-ring groove one is located on the outer surface of the cavity that mates with the mounting shaft hole of the watertight connector, and the axial sealing O-ring one is installed therein.

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