Helicopter landing grid support

Abstract

This invention relates to the field of aviation and marine technology, specifically disclosing a helicopter landing grille support, comprising a support web, a support ring, a base plate, and a manhole cover. The support web is annular, with its centerline vertically aligned. The top of the support web connects to the landing deck. The support ring is fixed to the inner circumference of the support web and supports the landing grille, which has honeycomb perforations. The base plate is located at the bottom of the support web, spaced apart from the support ring. The base plate closes the opening at the bottom of the support web, forming a cavity with the support web. The base plate has drainage holes and a manhole communicating with the cavity. The manhole cover is detachably mounted on the base plate and allows the manhole to be opened or closed. When debris accumulates in the cavity, operators can open the manhole through the cover and clean the debris without stopping the ship for maintenance, making the operation simple and convenient.

Description

Technical Field

[0001] This invention relates to the field of aviation and marine technology, and in particular to a helicopter landing grid support. Background Technology

[0002] A shipboard helicopter landing grille is generally a circular device installed on the deck of a ship's parking area. It has honeycomb holes drilled on it. When the helicopter is parked, a quick-locking device (such as a harpoon device) is used to lock the landing grille and keep the helicopter on the deck.

[0003] Landing grilles are typically supported by brackets, forming a cavity between the grille and the bracket. This cavity is connected to the outside via honeycomb holes in the grille, and drainage holes are located at the bottom. Epoxy resin is usually injected between the grille and the bracket to ensure even stress distribution during helicopter landings. During ship operation, debris can enter the cavity through the honeycomb holes. Over time, this accumulation can easily clog the drainage holes at the bottom of the cavity, preventing seawater from draining properly. This leads to severe corrosion of the bracket and other structures within the cavity. Furthermore, the epoxy resin filling the space between the grille and the bracket makes disassembly difficult, usually requiring the ship to be grounded for removal. This process is lengthy and disrupts normal ship operations, making it difficult to address corrosion issues through separate ship maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a helicopter landing grid support to solve the problem in the prior art where the debris accumulated in the landing grid cavity cannot be removed, easily clogging the drainage holes, which in turn leads to severe corrosion of the landing grid support and other structures located in the cavity.

[0005] This invention provides a helicopter landing grid support, which includes:

[0006] The support seat web is ring-shaped, with its center line set vertically, and its top end is used to connect with the landing deck.

[0007] A support ring is fixed to the inner circumferential surface of the web of the support seat. The support ring is used to support the landing grille, and the landing grille is provided with honeycomb holes.

[0008] A base plate is disposed at the bottom end of the web of the support seat. The base plate is spaced apart from the support ring. The base plate closes the opening at the bottom end of the web of the support seat, and the base plate and the web of the support seat form a receiving cavity. The base plate is provided with drainage holes and hand holes that are all connected to the receiving cavity.

[0009] A handhole cover is detachably mounted on the base plate and is used to open or close the handhole.

[0010] As a preferred technical solution for the helicopter landing grid support, the base plate includes a first base plate centrally located, and two second base plates respectively fixed to both sides of the first base plate and arranged opposite each other. The second base plates are arranged at an angle to the first base plate, and the first base plate is connected to the bottom end of the second base plate. The first base plate and the two second base plates are all connected to the bottom of the web of the support.

[0011] All drainage holes are located on the first base plate.

[0012] As a preferred technical solution for helicopter landing grid support, the first base plate is parallel to the landing deck.

[0013] As a preferred technical solution for a helicopter landing gear support, the handhole cover includes:

[0014] A seat plate, which is annular and is used to connect to the bottom of the base plate, has a through hole communicating with the hand hole;

[0015] The cover includes a handhole cover panel, which is detachably connected to the bottom end of the base plate via a connector, and the handhole cover panel is used to close the through hole.

[0016] As a preferred technical solution for the helicopter landing grid support, the handhole cover also includes a watertight rubber gasket disposed between the base plate and the cover.

[0017] As a preferred technical solution for the helicopter landing grid support, the cover further includes a cylindrical protrusion connected to the handhole cover panel, and the protrusion is inserted into the through hole.

[0018] As a preferred technical solution for the helicopter landing grille support, the handhole cover also includes a watertight rubber ring disposed on the inner circumferential surface of the base plate, and the protrusion can press the watertight rubber ring tightly against the inner circumferential surface of the base plate.

[0019] As a preferred technical solution for the helicopter landing grid support, the helicopter landing grid support further includes a plurality of elbow plates disposed on the inner circumferential surface of the web of the support base, the top end of the elbow plate being connected to the support ring, and the bottom end of the elbow plate being connected to the base plate.

[0020] As a preferred technical solution for helicopter landing grid support, several of the elbow plates are evenly distributed along the centerline of the web of the support.

[0021] As a preferred technical solution for a helicopter landing grid support, the helicopter landing grid support further includes epoxy resin filling the space between the support ring and the landing grid, as well as the space between the support ring and the landing grid.

[0022] The helicopter landing grille support provided by this invention has at least the following beneficial effects:

[0023] The helicopter landing grille support includes a support web, a support ring, a base plate, and a manhole cover. The support web is annular, with its centerline vertically aligned. The top of the web connects to the landing deck. The support ring is fixed to the inner circumference of the web, with its centerline coinciding with the web's centerline. The ring supports the landing grille, which has honeycomb perforations. The base plate is located at the bottom of the web, spaced apart from the support ring. It closes the opening at the bottom of the web and forms a cavity. The base plate has drainage holes and a manhole communicating with this cavity. The manhole cover is detachably attached to the base plate and allows the manhole to be opened or closed. When debris accumulates in the cavity, operators can open the manhole through the cover and reach into the cavity to clean it, eliminating the need for ship stoppage and simplifying the process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the helicopter landing grille support in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A cross-sectional view of the helicopter landing grille support along the AA direction;

[0026] Figure 3 for Figure 1 Cross-sectional view of the helicopter landing grille support along the BB direction;

[0027] Figure 4 This is a partial structural schematic diagram of the helicopter landing grille support in an embodiment of the present invention.

[0028] In the picture:

[0029] 1. Supporting the web plate;

[0030] 2. Support ring;

[0031] 3. Base plate; 31. First base plate; 32. Second base plate; 33. Drainage hole; 34. Hand hole;

[0032] 4. Handhole cover; 41. Seat plate; 42. Cover; 421. Handhole cover panel; 422. Protrusion; 4221. Protruding web; 4222. Protruding panel; 43. Watertight rubber gasket; 44. Watertight rubber ring;

[0033] 5. Receiving cavity; 6. Elbow plate; 7. Stud; 8. Nut; 9. Washer; 10. Epoxy resin; 11. Landing grille; 12. Landing deck. Detailed Implementation

[0034] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0035] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] A landing grille typically consists of a landing grille and a support base, forming a cavity between them. This cavity is connected to the outside through honeycomb holes in the grille, and drainage holes are located at the bottom of the cavity. Epoxy resin is usually injected between the landing grille and the support base to ensure even stress distribution during helicopter landings. During ship operation, debris can enter the cavity through the honeycomb holes. Over time, this accumulation can easily clog the drainage holes at the bottom of the cavity, preventing seawater from draining properly. This leads to severe corrosion of the support base and other structures within the cavity. Furthermore, the epoxy resin filling the space between the landing grille and the support base makes disassembly difficult, usually requiring the ship to be grounded for disassembly. This process is lengthy and disrupts normal ship operations, making it difficult to address corrosion issues through separate ship maintenance.

[0039] To address this issue, this embodiment provides a helicopter landing grid support bracket. This helicopter landing grid support bracket can be applied to ships and used to support the landing grid.

[0040] Specifically, such as Figures 1 to 4As shown, the helicopter landing grid support includes a support web 1, a support ring 2, a base plate 3, and a handhole cover 4. The support base web 1 is annular, with its centerline set vertically. The top of the support base web 1 is used to connect with the landing deck 12. The support ring 2 is fixed to the inner circumferential surface of the support base web 1, with its centerline coinciding with the centerline of the support base web 1. The support ring 2 supports the landing grille 11, which has honeycomb holes for use with the harpoon device on the helicopter to facilitate helicopter landing. The bottom plate 3 is located at the bottom of the support base web 1, spaced apart from the support ring 2. The bottom plate 3 closes the opening at the bottom of the support base web 1, and the bottom plate 3 and the support base web 1 form a cavity 5. The bottom plate 3 has drainage holes 33 and hand holes 34 that communicate with the cavity 5. The drainage holes 33 drain water from the cavity 5, and the hand holes 34 allow hands to pass through for cleaning debris from the cavity 5. The hand hole cover 4 is detachably installed on the bottom plate 3 and is used to open or close the hand hole 34. During ship operation, debris can enter the containment cavity 5 through the honeycomb pores, easily clogging the drain hole 33. This leads to seawater accumulation in the containment cavity 5, which in turn corrodes the cavity wall and other internal components. In this situation, the handhole 34 can be opened through the handhole cover 4, allowing operators to reach into the containment cavity 5 to clean the debris without stopping the ship for maintenance. This operation is simple and convenient. Furthermore, when cleaning debris, a water hose can be used to rinse the debris and seawater in the containment cavity 5 with fresh water.

[0041] The number of drainage holes 33 and hand holes 34 can be set according to actual needs. This embodiment exemplarily provides a scheme where both drainage holes 33 and hand holes 34 are set to two, and each hand hole 34 is provided with a hand hole cover 4. Specifically, the two drainage holes 33 are symmetrically arranged about the center line of the support web 1, and the two hand holes 34 are also symmetrically arranged about the center line of the support web 1.

[0042] Optionally, a heating device is also provided in the receiving cavity 5 to heat the landing grille 11 in order to prevent the water on the surface of the landing grille 11 from freezing and blocking the honeycomb holes in a low-temperature environment, thereby affecting the cooperation between the harpoon device and the honeycomb holes.

[0043] Alternatively, please refer to Figure 2The base plate 3 includes a centrally located first base plate 31 and two second base plates 32 fixed to both sides of the first base plate 31 and arranged opposite each other. The second base plates 32 are arranged at an angle to the first base plate 31, and the first base plate 31 is connected to the bottom end of the second base plates 32. All three—the first base plate 31 and the two second base plates 32—are connected to the bottom of the support web plate 1. Drainage holes 33 are all located on the first base plate 31. With this arrangement, the first base plate 31 is at the lowest position, and water falling into the receiving cavity 5 through the honeycomb holes will accumulate on the first base plate 31 under its own gravity, which is conducive to the timely discharge of water in the receiving cavity 5 through the drainage holes 33. Preferably, the first base plate 31 is parallel to the landing deck 12. Two handholes 34 are respectively located on the two second base plates 32.

[0044] Alternatively, please refer to Figure 3 The handhole cover 4 includes a base plate 41 and a cover 42. The base plate 41 is annular and is connected to the bottom of the base plate 3. The base plate 41 has a through hole communicating with the handhole 34. The cover 42 includes a handhole cover panel 421, which is detachably connected to the bottom end of the base plate 41 via a connector, and the handhole cover panel 421 is used to close the through hole. In this embodiment, both the handhole 34 and the through hole are circular. The connectors for the base plate 41 are specifically studs 7, nuts 8, and washers 9. Further optionally, to ensure the sealing performance of the handhole cover, the handhole cover 4 also includes a watertight rubber gasket 43 disposed between the base plate 41 and the cover 42.

[0045] Optionally, the cover 42 further includes a cylindrical protrusion 422, which is connected to the handhole cover panel 421 and inserted into the through hole. This arrangement facilitates assembly. The protrusion 422 includes a protruding web 4221 and a protruding panel 4222. The protruding web 4221 is annular, with its bottom end connected to the handhole cover panel 421 and its top end connected to the protruding panel 4222. The protruding panel 4222, the protruding web 4221, and the handhole cover panel 421 form a closed cavity. Further optionally, to ensure the sealing performance of the handhole cover 4, the handhole cover 4 further includes a watertight rubber ring 44 disposed on the inner circumferential surface of the base plate 41. The protrusion 422 can press the watertight rubber ring 44 tightly against the inner circumferential surface of the base plate 41. Preferably, when the handhole cover 4 closes the handhole 34, the raised panel 4222 and the base plate 3 are flush.

[0046] Optionally, the helicopter landing grille support also includes several elbow plates 6 disposed on the inner circumferential surface of the support web 1. The top end of the elbow plate 6 is connected to the support ring 2, and the bottom end of the elbow plate 6 is connected to the base plate 3. This arrangement ensures the support strength and stability of the helicopter landing grille 11 by the helicopter landing grille support. Preferably, the elbow plates 6 are evenly distributed along the centerline of the support web 1.

[0047] Optionally, the helicopter landing grid support also includes epoxy resin 10 filling the space between the support ring 2 and the landing grid 11, as well as between the support ring 2 and the landing grid 11. This arrangement ensures that the landing grid 11 is subjected to uniform force during helicopter landing.

[0048] The installation process of the helicopter landing grille support in this embodiment is as follows:

[0049] 1) Preparation of components. Specifically, high-strength steel is used to machine the various components of the support ring 2, support seat web 1, elbow plate 6, and base plate 3; ordinary steel is used to machine the various components of the seat plate 41 and cover 42; and rubber is used to machine the watertight rubber ring 44 and watertight rubber pad 43. The support seat web 1 is formed by welding multiple first single plates into a ring structure, and similarly, the raised web 4221 is formed by welding multiple second single plates into a ring structure.

[0050] 2) The first base plate 31 and the two second base plates 32 are welded together to form a shallow V-shaped base plate 3.

[0051] 3) Weld the support ring 2, the support seat web plate 1, the elbow plate 6 and the base plate 3 together.

[0052] 4) According to the drawing of the cover 42, the raised web plate 4221, the raised panel 4222 and the handhole cover panel 421 are assembled into the cover 42 by welding.

[0053] 5) Two drainage holes 33 are made in the base plate 3.

[0054] 6) Two hand holes 34 are made in the base plate 3.

[0055] 7) Weld the seat plate 41 to the base plate 3, and then make holes for studs 7 on the seat plate 41 and the base plate 3. Install the cover 42 on the seat plate 41 through the studs 7, nuts 8 and washers 9, and at the same time assemble the watertight rubber gasket 43 and watertight rubber ring 44.

[0056] 8) After the helicopter landing grid support seat passes the on-site inspection, it is welded to the landing deck 12 in the main structure. The installation accuracy and other requirements must meet the installation requirements of the landing grid 11.

[0057] 9) Place the drill sleeve on the connecting screw hole of the landing grille 11, and drill and ream screw holes on the support ring 2 in sequence.

[0058] 10) After the helicopter landing grid support seat is installed and inspected in the hull structure and passes inspection, it shall be filled with epoxy resin 10 and the deck fixing screws shall be installed in accordance with the technical requirements for the installation of the landing grid 11.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A helicopter landing grille support, characterized in that, include: The web of the support seat (1) is ring-shaped, and the center line of the web of the support seat (1) is set in the vertical direction. The top of the web of the support seat (1) is used to connect with the landing deck (12). A support ring (2) is fixed to the inner circumferential surface of the web plate (1) of the support seat. The center line of the support ring (2) coincides with the center line of the web plate (1) of the support seat. The support ring (2) is used to support the landing grille (11). The landing grille (11) is provided with honeycomb holes. A base plate (3) is provided at the bottom end of the web plate (1) of the support seat. The base plate (3) is spaced apart from the support ring (2). The base plate (3) closes the opening at the bottom end of the web plate (1) of the support seat, and the base plate (3) and the web plate (1) of the support seat form a receiving cavity (5). The base plate (3) is provided with a drain hole (33) and a hand hole (34) that are both connected to the receiving cavity (5). A handhole cover (4) is detachably mounted on the base plate (3) and is used to open or close the handhole (34); The handhole cover (4) includes: The seat plate (41) is annular and is used to connect to the bottom of the base plate (3). The seat plate (41) has a through hole communicating with the hand hole (34). The cover (42) includes a handhole cover panel (421), which is detachably connected to the bottom end of the base plate (41) via a connector, and the handhole cover panel (421) is used to close the through hole; The cover (42) also includes a cylindrical protrusion (422) that is connected to the handhole cover panel (421) and is inserted into the through hole.

2. The helicopter landing grille support according to claim 1, characterized in that, The base plate (3) includes a first base plate (31) centrally located, and two second base plates (32) fixed to both sides of the first base plate (31) and arranged opposite each other. The second base plates (32) are arranged at an angle to the first base plate (31), and the first base plate (31) is connected to the bottom end of the second base plate (32). The first base plate (31) and the two second base plates (32) are all connected to the bottom of the support seat web plate (1). The drainage holes (33) are all located on the first base plate (31).

3. The helicopter landing grille support according to claim 2, characterized in that, The first base plate (31) is parallel to the landing deck (12).

4. The helicopter landing grille support according to claim 1, characterized in that, The handhole cover (4) also includes a watertight rubber gasket (43) disposed between the seat plate (41) and the cover (42).

5. The helicopter landing grille support according to claim 1, characterized in that, The handhole cover (4) also includes a watertight rubber ring (44) disposed on the inner circumferential surface of the seat plate (41), and the protrusion (422) can press the watertight rubber ring (44) tightly against the inner circumferential surface of the seat plate (41).

6. The helicopter landing grille support according to claim 1, characterized in that, The helicopter landing grid support also includes several elbow plates (6) disposed on the inner circumferential surface of the web plate (1) of the support base. The top end of the elbow plate (6) is connected to the support ring (2), and the bottom end of the elbow plate (6) is connected to the base plate (3).

7. The helicopter landing grille support according to claim 6, characterized in that, Several of the elbow plates (6) are evenly distributed along the center line of the web plate (1) of the support seat.

8. The helicopter landing grille support according to claim 1, characterized in that, The helicopter landing grid support also includes epoxy resin (10) filling the space between the support ring (2) and the landing grid (11), as well as between the support ring (2) and the landing grid (11).

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