Arc-shaped fairing opening and closing system for underwater use

Abstract

The application provides an arc fairing opening and closing system used underwater, which comprises a driving device, an arc guide rail, a moving linkage mechanism and a fairing, the moving linkage mechanism is installed on the arc guide rail, the driving device is in transmission connection with the moving linkage mechanism, the moving linkage mechanism can move back and forth along the track direction of the arc guide rail, the moving linkage mechanism is in transmission connection with the fairing, and the fairing can open or close the outer skin. The arc motion guide rail and the arc motion linkage mechanism are adopted in the design, so that the linear motion is converted into the curve motion in the narrow space, the edge region of the arc fairing is fully utilized, the utilization rate of the underwater operation space of the equipment is improved, the pure mechanical structure is convenient to install and has high reliability; in the opening and closing process of the fairing, the fairing is always close to the outer skin of the equipment, the influence of the opening and closing process of the fairing on the whole equipment platform fairing effect is greatly reduced, and the stability of the underwater operation of the platform is improved.

Description

Technical Field

[0001] This invention relates to the field of arc-shaped fairing opening and closing design technology, specifically to an arc-shaped fairing opening and closing system for underwater use. Background Technology

[0002] With the continuous development of marine engineering applications, more and more equipment is operating underwater. During underwater operations, fluid disturbances have a significant impact on the stability of the equipment platform. Therefore, underwater equipment is generally designed with various types of fairings. As an important component of the equipment, fairings often need to be opened and closed, and need to be confined to a very small space to complete a large range of opening and closing actions to meet the needs of different application scenarios.

[0003] For example, Chinese patent application 202111603091.4 discloses an integrated frame opening and closing mechanism, which drives the door to open and close via a linkage and swing arm mechanism. However, this door drive mechanism and linkage mechanism occupy a large amount of space, making it unsuitable for applications with high space requirements. Chinese patent application 201910810198.2 discloses a double-opening movable door opening and closing linkage mechanism, which can reduce the equipment space of the landing gear door opening and closing structure of small aircraft. However, this drive mechanism is not suitable for opening and closing curved doors, and it is also difficult to perform when the drive mechanism is located in a limited space on one side of the equipment.

[0004] Therefore, a brand-new underwater arc-shaped fairing opening and closing system is needed to solve the problem of opening and closing the arc-shaped fairing in a limited space, and to make full use of the arc-shaped edge area of ​​the equipment to solve the driving and transmission problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an underwater arc-shaped fairing opening and closing system.

[0006] According to the present invention, an underwater arc-shaped fairing opening and closing system includes: a driving device, an arc-shaped guide rail, a motion linkage mechanism, and a fairing. The motion linkage mechanism is mounted on the arc-shaped guide rail. The driving device is pulsatorically connected to the motion linkage mechanism. The motion linkage mechanism is capable of reciprocating along the track of the arc-shaped guide rail. The motion linkage mechanism is pulsatorically connected to the fairing. The fairing is capable of opening or closing its outer skin.

[0007] Preferably, the driving device includes a driving cylinder, which includes a cylinder body and a piston rod. A driving adapter block is installed at the output end of the piston rod, and the driving adapter block is capable of reciprocating motion.

[0008] Preferably, a displacement sensor is installed at the end of the drive cylinder away from the drive adapter block.

[0009] Preferably, both the drive cylinder and the arc-shaped guide rail are mounted on the equipment platform and are located on the side close to the outer skin.

[0010] Preferably, proximity switches are installed at both ends of the device platform, and the two proximity switches are respectively set at the two extreme positions of the moving path of the drive adapter block. An induction magnetic box is installed on the drive adapter block.

[0011] Preferably, the shape of the arc-shaped guide rail matches the movement trajectory of the air deflector. The arc-shaped guide rail includes an upper guide rail and a lower guide rail, which are fastened together by multiple first connecting plates. The lower guide rail includes a lower straight guide rail and a lower arc guide rail, and the upper guide rail includes an upper straight guide rail, an upper arc guide rail, and an upper arc-shaped guide rail.

[0012] Preferably, the motion linkage mechanism includes multiple motion rollers, and any two adjacent motion rollers are connected by a linkage. The motion roller closest to the drive device on the motion linkage mechanism is connected to the hydraulic cylinder drive adapter block through a first linkage.

[0013] Preferably, the motion roller includes universal ball bearings at both ends and a motion shaft in the middle. The universal ball bearings at both ends of the motion roller are respectively mounted on the upper guide rail and the lower guide rail. The motion shaft is equipped with a thrust ball bearing and a rolling bearing for mounting the connecting rod.

[0014] Preferably, a support assembly is installed at one end of the arc-shaped guide rail, and the flow guide is mounted on the support assembly via an adapter plate.

[0015] Preferably, a buoyancy block is installed on the inner side of the flow guide.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention uses an arc-shaped guide rail mounted on the same side as the flow guide, with the motion linkage mechanism rolling freely within the arc-shaped guide rail. The flow guide is mounted on the motion linkage mechanism via an adapter block and moves back and forth under the action of a drive device. The drive device is designed to consist of a drive cylinder and a displacement sensor. The linear motion of the drive cylinder is converted into the curved motion of the flow guide, and the precise opening and closing of the flow guide is ensured by real-time displacement monitoring. Throughout the entire process, the flow guide moves closely against the edge of the equipment, making full use of the edge space of the equipment and ensuring high reliability.

[0018] 2. By adopting an arc-shaped motion guide rail and an arc-shaped motion linkage mechanism, this invention transforms linear motion into curvilinear motion in a confined space, making full use of the edge area of ​​the arc-shaped guide shield and improving the utilization rate of the underwater operation space of the equipment.

[0019] 3. This invention employs a unique multi-segment arc-shaped guide rail design, which perfectly integrates the segmented movement and final closing of the arc-shaped fairing through multiple different arc-shaped guide rails. It is a purely mechanical structure that is easy to install and highly reliable.

[0020] 4. This invention ensures that the flow guide cover remains in close contact with the outer skin of the equipment during the opening and closing process, which greatly reduces the impact of the flow guide cover opening and closing process on the overall flow guiding effect of the equipment platform and improves the stability of the platform during underwater operations. Attached Figure Description

[0021] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a three-dimensional structural diagram of the arc-shaped opening and closing system of the air deflector, which is the main feature of this invention.

[0023] Figure 2 This is a schematic diagram illustrating the extension of the external device, which is the main feature of this invention.

[0024] Figure 3 This is a schematic diagram illustrating the retraction of the extended device, which is the main feature of this invention.

[0025] Figure 4 This is a three-dimensional structural diagram illustrating the main driving device of the present invention;

[0026] Figure 5 This is a three-dimensional structural diagram illustrating the arc-shaped linkage mechanism of the air deflector, which is the main feature of this invention.

[0027] Figure 6 This is a schematic diagram illustrating the structure of the lower guide rail of the arc-shaped linkage mechanism, which is the main feature of this invention.

[0028] Figure 7 This is a schematic diagram illustrating the structure of the arc-shaped linkage mechanism, which is the main feature of this invention.

[0029] Figure 8 This is a schematic diagram illustrating the structure of the moving roller, which is the main feature of this invention.

[0030] Figure 9 This is a schematic diagram illustrating the positions of the connecting rod and support plate inside the guide rail when the fairing is fully open.

[0031] Figure 10 This is a schematic diagram illustrating the positions of the fairing and outer skin when the first moving roller moves in segment C.

[0032] Figure 11 This is a schematic diagram illustrating the positions of the fairing and outer skin when the first moving roller moves to the starting point of segment D.

[0033] Figure 12This is a schematic diagram illustrating the positions of the fairing and outer skin when the first moving roller moves in segment D.

[0034] Figure 13 This is a schematic diagram illustrating the position of the fairing and outer skin when the first roller on the left moves in segment E.

[0035] Figure 14 This is a schematic diagram illustrating the main features of the invention: the fairing is fully closed.

[0036] Figure 15 This is a magnified view of a portion of the main feature of this invention when the fairing is fully closed.

[0037] As shown in the figure:

[0038] Drive cylinder 1, displacement sensor 2, arc-shaped guide rail 3

[0039] 4. Motion linkage mechanism; 5. Proximity switch; 6. Induction magnetic box

[0040] 7. Draft fairing 8. Outer skin 9. Equipment platform

[0041] Lower straight guide rail 11, lower arc guide rail 12, upper straight guide rail 13

[0042] Upper arc guide rail 14, upper arc-shaped guide rail 15, drive cylinder body 16

[0043] Piston rod 17, drive adapter block 18, fixing plate 20

[0044] First connecting plate 22 Second connecting plate 25 Third connecting plate 26

[0045] First support block 27 Second support block 28 Third support block 29

[0046] Support plate 30, First adapter plate 31, Second adapter plate 32

[0047] Buoyancy block 33, Rolling shaft 34, First connecting rod 35

[0048] 36 Bearing; 37 Moving roller; 38 Second connecting rod

[0049] Third link 39 Universal ball bearing 40 Anti-loosening washer 41

[0050] Thrust ball bearing 42, motion shaft 43, rolling bearing 44

[0051] Extended working equipment 45 Fourth support block 46 Detailed Implementation

[0052] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0053] like Figure 1-3 As shown, an underwater arc-shaped fairing opening and closing system according to the present invention includes a driving device, an arc-shaped guide rail 3, a motion linkage mechanism 4, and a fairing 7. The motion linkage mechanism 4 is mounted on the arc-shaped guide rail 3. The driving device is connected to the motion linkage mechanism 4 in a transmission manner. The motion linkage mechanism 4 can reciprocate along the track of the arc-shaped guide rail 3. The motion linkage mechanism 4 is connected to the fairing 7 in a transmission manner. The fairing 7 can open or close its outer skin 8.

[0054] This application utilizes an arc-shaped guide rail 3 mounted on the same side as the flow guide 7. The motion linkage mechanism 4 rolls freely within the arc-shaped guide rail 3. The flow guide 7 is mounted on the motion linkage mechanism 4 via an adapter block and moves back and forth under the action of a drive device. The drive device consists of a drive cylinder 1 and a displacement sensor 2. The linear motion of the drive cylinder 1 is converted into the curved motion of the flow guide 7, and real-time displacement monitoring ensures precise opening and closing of the flow guide 7. Throughout the process, the flow guide 7 moves closely against the edge of the equipment, making full use of the edge space and ensuring high reliability.

[0055] like Figure 4 As shown, the driving device includes a driving cylinder 1, which includes a driving cylinder body 16 and a piston rod 17. A driving adapter block 18 is installed at the output end of the piston rod 17. The driving adapter block 18 can reciprocate. Two side flanges are welded to the side of the driving cylinder body 16.

[0056] A displacement sensor 2 is installed on the end face of the drive cylinder 1 away from the drive adapter block 18.

[0057] Both the drive cylinder 1 and the arc-shaped guide rail 3 are mounted on the equipment platform 9, and are positioned on the side closest to the outer skin 8. Proximity switches 5 are installed at both ends of the equipment platform 9, and are positioned at the two extreme positions along the movement path of the drive adapter block 18. A magnetic sensing box 6 is mounted on the drive adapter block 18. After the flow guide 7 is fully opened, the extended working device 45 extends out of the equipment platform 9 and can then operate. The movement trajectory of the extended device 45 is as follows: Figure 2 and 3 As shown, the drive cylinder 1 and the arc-shaped guide rail 3 can only occupy the narrow edge space of the equipment platform 9.

[0058] like Figure 5As shown, a fixing plate 20 is installed at one end of the arc-shaped guide rail 3, which closes one side of the guide rail and restricts the moving roller from leaving the guide rail. A support assembly is installed at the other end of the arc-shaped guide rail 3, and the flow guide 7 is mounted on the support assembly via an adapter plate. The support assembly includes a first support block 27, a second support block 28, a third support block 29, and a support plate 30. The second support block 28 and the third support block 29 are mounted on the first support block 27, and the support plate 30 moves along the third support block 29. The flow guide 7 is mounted on the support plate 30 via a second adapter plate 32 and a first adapter plate 31. When the flow guide 7 is closed, it can respectively assist in supporting the third connecting rod 39 and the support plate 30, reducing the cantilever length, providing support points, and improving stability.

[0059] A buoyancy block 33 is installed on the inner side of the fairing 7, and the buoyancy block 33 is glued to the inner side of the fairing 7.

[0060] The arc-shaped guide rail 3 includes an upper guide rail and a lower guide rail, which are fastened together by multiple first connecting plates 22. The lower guide rail includes a lower straight guide rail 11 and a lower arc guide rail 12, which are fastened together by a second connecting plate 25. The second connecting plate 25 is a side connecting plate connecting the lower straight guide rail 11 and the lower arc guide rail 12. The upper guide rail includes an upper straight guide rail 13, an upper arc guide rail 14, and an upper arc-shaped guide rail 15, which are fastened together by a third connecting plate 26. In other specific embodiments, the upper guide rail can also be composed of two sections. The specific number of sections of the upper and lower guide rails can be adjusted according to the actual situation. The upper and lower guide rails are only the same in shape, but the actual guide rail groove sizes are different. The upper and lower guide rails are fastened together by multiple first connecting plates 22. These first connecting plates 22 may have different shapes and sizes in actual applications. For example, some may have their inner sides cut off to avoid interference with the motion linkage mechanism 4, but their function is only for fastening.

[0061] like Figure 6 As shown, the shape of the arc-shaped guide rail 3 matches the movement trajectory of the fairing 7. The lower arc guide rail 12 is designed with one straight segment A and four arc segments B, C, D, and E, each region being optimized according to the fairing's movement trajectory. A is a straight segment; C is an arc, and it is concentric with the outer skin 8 on the movement plane, maintaining the same distance between the fairing 7 and the outer skin 8 during movement; B is a tangent arc between A and C, allowing the second connecting rod 38 to transition smoothly; D is an arc segment, used to reduce the distance between the fairing 7 and the outer skin 8 while the fairing 7 moves forward; E is an arc segment, where the movement trajectory of the fairing 7 mainly involves the distance between it and the outer skin 8 rapidly decreasing to 0, thus acting as an inward locking mechanism.

[0062] The fairing 7 is rigidly connected to the support plate 30, the second transition plate 32, the first transition plate 31, and the third connecting rod 39. Therefore, its movement trajectory is mainly determined by the movement trajectory of the first roller, i.e., the third connecting rod 39, as it approaches the support plate 30. When the fairing 7 is in its fully open position, see... Figure 9The first roller is located in arc C as shown in the figure. The support plate 30 and the third connecting rod 39 can be completely retracted into the guide rail 3 without interference from the surrounding area. The motion trajectory during the closing process is as follows: Figure 10 -15, Figure 10 This is a schematic diagram showing the positions of the fairing 7 and the outer skin 8 when the first moving roller is moving in segment C. Figure 11 This is a schematic diagram showing the positions of the flow cover 7 and the outer skin 8 when the first moving roller moves to the starting point of segment D. Figure 12 This is a schematic diagram showing the positions of the fairing 7 and the outer skin 8 when the first moving roller moves in segment D. Figure 13 This is a schematic diagram showing the positions of the fairing 7 and the outer skin 8 when the first roller on the left is moving in segment E. Figure 14 This is a schematic diagram showing the fairing 7 in its closed position. Figure 15 This is a magnified view of the fairing 7 when it is fully closed. When the fairing 7 is fully closed, a fourth support block 46 is also provided to reduce the impact of outflow on the fairing 7.

[0063] like Figure 7 and 8 As shown, the motion linkage mechanism 4 includes multiple motion rollers 37, and any two adjacent motion rollers 37 are connected by a linkage. Preferably, nine sets of motion rollers 37 are installed on the lower straight guide rail 11 and the lower arc guide rail 12. The motion rollers 37 are connected together by a second linkage 38 and a third linkage 39. The second linkage 38 is a short, elongated linkage, which facilitates the conversion motion from the straight guide rail to the arc guide rail. The third linkage 39 is an arc, and it is the same arc as the support plate 30 and concentric with the outer skin 8, so as to complete the motion with a small and consistent outward clearance with the outer skin 8.

[0064] The moving roller 37 closest to the drive device on the motion linkage mechanism 4 is connected to the hydraulic cylinder drive adapter block 18 via the first link 35. One end of the first link 35 is connected to the moving roller 37, and the other end is equipped with a rolling shaft 34 and a bearing 36. The rolling shaft 34 is connected to the hydraulic cylinder drive adapter block 18.

[0065] The motion roller 37 includes universal ball bearings 40 at both ends and a motion shaft 43 in the middle. The universal ball bearings 40 at both ends of the motion roller 37 are respectively mounted on the upper guide rail and the lower guide rail. The motion shaft 43 is equipped with a thrust ball bearing 42 and a rolling bearing 44 for mounting the connecting rod. The motion roller 37 is composed of the motion shaft 43, anti-loosening washers 41, and universal ball bearings 40, with the thrust ball bearing 42 and rolling bearing 44 installed in the middle for fixing the second connecting rod 38 or the third connecting rod 39.

[0066] The main working principle of this application is as follows:

[0067] After the system is powered on, the hydraulic system is powered on, displacement sensor 2 and proximity switch 5 are powered on, the indicator light of proximity switch 5 on the right side illuminates, and drive cylinder 1 begins to move. Through drive adapter block 18, it pushes motion linkage mechanism 4 forward. Under the guidance of the upper and lower guide rails, motion linkage mechanism 4 rolls along arc-shaped guide rail 3. The end of motion linkage mechanism 4 drives the flow guide 7 forward through the first adapter plate 31 and the second adapter plate 32 of the flow guide shroud. Due to the unique curve design of arc-shaped guide rail 3, the flow guide 7 is tightly attached to the outer skin 8 of the platform during the movement process, occupying very little movement space. Through the unique curve segments D and E of arc-shaped guide rail 3, when the motion roller 37 moves to this area, the flow guide 7 can gradually approach the outer skin 8 until it completely closes the outer skin 8.

[0068] When the arc-shaped fairing 7 moves, the displacement sensor 2 displays the forward displacement in real time, ensuring that the opening and closing system is functioning properly during the movement. When the arc-shaped fairing 7 moves to the closed position, the proximity switch 5 on the left illuminates, indicating that the movement has reached the limit position and the system stops. The unique buoyancy block 33 design ensures that the fairing 7 maintains a stable underwater posture and possesses strong stability.

[0069] This application employs an arc-shaped motion guide rail and arc-shaped motion linkage mechanism design, transforming linear motion into curvilinear motion within a confined space. This fully utilizes the edge area of ​​the arc-shaped guide fairing, improving the underwater operating space utilization rate of the equipment. This application utilizes a unique multi-segment arc-shaped guide rail design, perfectly integrating the segmented movement of the arc-shaped guide fairing with its final closing via multiple different arc-shaped guide rails. The purely mechanical structure ensures convenient installation and high reliability. During the opening and closing process, the guide fairing 7 remains in close contact with the outer skin 8 of the equipment, greatly reducing the impact of the guide fairing 8's opening and closing process on the overall flow guidance effect of the equipment platform and improving the stability of the platform during underwater operations.

[0070] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0071] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. An underwater arc-shaped fairing opening and closing system, characterized in that, include: The device includes a drive unit, an arc-shaped guide rail (3), a motion linkage mechanism (4), and a flow deflector (7). The motion linkage mechanism (4) is mounted on the arc-shaped guide rail (3). The drive unit is connected to the motion linkage mechanism (4) in a transmission manner. The motion linkage mechanism (4) can reciprocate along the track of the arc-shaped guide rail (3). The motion linkage mechanism (4) is connected to the flow deflector (7) in a transmission manner. The flow deflector (7) can open or close the outer skin (8). The motion linkage mechanism (4) includes multiple motion rollers (37), and any two adjacent motion rollers (37) are connected by a linkage. The motion roller (37) closest to the drive device on the motion linkage mechanism (4) is connected to the cylinder drive adapter block (18) through a first linkage (35).

2. The underwater arc-shaped fairing opening and closing system as described in claim 1, characterized in that, The driving device includes a driving cylinder (1), which includes a driving cylinder body (16) and a piston rod (17). A driving adapter block (18) is installed at the output end of the piston rod (17), and the driving adapter block (18) is capable of reciprocating motion.

3. The underwater arc-shaped fairing opening and closing system as described in claim 2, characterized in that, A displacement sensor (2) is installed at the end of the drive cylinder (1) away from the drive adapter block (18).

4. The underwater arc-shaped fairing opening and closing system as described in claim 2, characterized in that, The drive cylinder (1) and the arc-shaped guide rail (3) are both mounted on the equipment platform (9) and are both located on the side close to the outer skin (8).

5. The underwater arc-shaped fairing opening and closing system as described in claim 4, characterized in that, The device platform (9) is equipped with proximity switches (5) at both ends. The two proximity switches (5) are respectively set at the two extreme positions of the moving path of the drive adapter block (18). The drive adapter block (18) is equipped with an induction magnetic box (6).

6. The underwater arc-shaped fairing opening and closing system as described in claim 1, characterized in that, The shape of the arc-shaped guide rail (3) matches the movement trajectory of the flow guide (7). The arc-shaped guide rail (3) includes an upper guide rail and a lower guide rail. The upper guide rail and the lower guide rail are fastened together by multiple first connecting plates (22). The lower guide rail includes a lower straight guide rail (11) and a lower arc guide rail (12). The upper guide rail includes an upper straight guide rail (13), an upper arc guide rail (14), and an upper arc-shaped guide rail (15).

7. The underwater arc-shaped fairing opening and closing system as described in claim 6, characterized in that, The motion roller (37) includes universal ball bearings (40) at both ends and a motion shaft (43) in the middle. The universal ball bearings (40) at both ends of the motion roller (37) are respectively installed on the upper guide rail and the lower guide rail. The motion shaft (43) is equipped with a thrust ball bearing (42) and a rolling bearing (44) for mounting the connecting rod.

8. The underwater arc-shaped fairing opening and closing system as described in claim 1, characterized in that, One end of the arc-shaped guide rail (3) is equipped with a support component, and the flow guide (7) is mounted on the support component via an adapter plate.

9. The underwater arc-shaped fairing opening and closing system as described in claim 1, characterized in that, A buoyancy block (33) is installed on the inner side of the flow guide (7).

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