A landing pad support structure and hovercraft servicing method

Abstract

The present application relates to the technical fields of ship engineering, in particular to a landing pad support structure and hovercraft maintenance method, the landing pad support structure comprises a support frame and a plurality of support pads, the support frame comprises a reinforced bottom frame, a first side frame arranged on the first side of the reinforced bottom frame and a second side frame arranged on the second side of the reinforced bottom frame, the first side frame and the second side frame are arranged in opposite intervals, the interval between the first side frame and the second side frame forms a first interval, the lower end of the landing pad is inserted into the upper part of the first interval, and the interval between the landing pad and the reinforced bottom frame forms a second interval; the first side frame and the second side frame are detachably connected with the landing pad, each support pad is arranged in the second interval from bottom to top in sequence, the landing pad support structure is connected with the landing pad after the ship body is lifted, and the landing pad can be supported by the support structure after the ship body is dropped, so that the position of the ship body does not need to be adjusted, and the operation difficulty is reduced.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, and in particular to a landing pad support structure and a method for overhauling hovercraft. Background Technology

[0002] A hovercraft is an amphibious transportation vehicle that uses air-lift fans to create air pressure within the skirt beneath the hull, lifting the vessel to float on water or land. To ensure the proper functioning of a hovercraft, regular inspections of the hull structure and skirt, as well as other accessories, are necessary. Maintenance of hovercraft often takes more than two weeks. Figure 1 , Figure 2 As shown, the hovercraft has multiple landing pads 100 located within the area enclosed by the apron on its hull. The height of the landing pads 100 is generally less than 400mm, while the height of the apron is generally greater than 2m. When the hovercraft is on land and in an inactive state, the lower ends of each landing pad 100 are in contact with the ground, providing support for the hull 200. When the landing pads 100 land, the height between the hull bottom and the ground is equal to the height of the landing pads. The landing pads are relatively small and cannot provide sufficient working space for maintenance personnel to inspect the bottom of the hull 200 and the apron. To ensure that maintenance personnel have adequate working space... Due to the significant weight of the hull 200, the supporting blocks for each landing pad 100 are also quite heavy. Currently, the common practice is to hoist the hull 200 onto a ship maintenance platform, ensuring that the blocks are aligned with the positions of each landing pad 100. After hoisting the hull 200, its position is adjusted so that each landing pad 100 is vertically aligned with its respective block, and then the hull 200 is lowered to support the landing pads 100. However, adjusting the hull 200 requires individually aligning each landing pad 100 at its bottom with its respective block, which is technically challenging and carries the risk of damaging the hull's bottom due to misalignment. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the current support structure for supporting landing pads adopts piers fixed on the maintenance platform. After the hull is lifted, the position of the hull is adjusted to make the landing pads and piers arranged vertically relative to each other. This operation is difficult and there is a risk of damaging the hull due to misalignment of the landing pads and piers.

[0004] To address the aforementioned technical problems, the present invention aims to provide a landing pad support structure for supporting a landing pad, comprising:

[0005] A support frame includes a reinforcing base frame, a first side frame disposed on a first side of the reinforcing base frame, and a second side frame disposed on a second side of the reinforcing base frame. The first side frame and the second side frame are arranged at a distance from each other, and the distance between the first side frame and the second side frame forms a first gap. The lower end of the landing pad is inserted into the upper part of the first gap, and the distance between the landing pad and the reinforcing base frame forms a second gap. Both the first side frame and the second side frame are detachably connected to the landing pad.

[0006] Multiple support pads are arranged sequentially from bottom to top in the second interval. The support pad located at the top of the second interval abuts against the lower end of the landing pad, and the support pad located at the bottom of the second interval abuts against the upper end of the reinforcing base frame.

[0007] As a preferred embodiment, the landing pad has a first protrusion on the side opposite to the first side frame, and the first protrusion has a first fastener for connecting to the first side frame; the landing pad has a second protrusion on the side opposite to the second side frame, and the second protrusion has a second fastener for connecting to the second side frame.

[0008] As a preferred embodiment, a first gasket is provided between the first boss and the first side frame, and a second gasket is provided between the second boss and the second side frame.

[0009] As a preferred embodiment, the upper end of the first side frame is fixed with a first stop protrusion spaced apart from the landing pad, and the side of the first stop protrusion facing the landing pad abuts against the end of the first protrusion away from the landing pad; the upper end of the second side frame is fixed with a second stop protrusion spaced apart from the landing pad, and the side of the second stop protrusion facing the landing pad abuts against the end of the second protrusion away from the landing pad.

[0010] As a preferred option, all of the aforementioned support pads are sleepers.

[0011] As a preferred embodiment, a first wedge is inserted between the landing pad and the first side frame, and a second wedge is inserted between the landing pad and the second side frame.

[0012] An embodiment of a hovercraft maintenance method includes the following steps:

[0013] Step S1: Lift the hull;

[0014] Step S2: Install the above-mentioned landing pad support structure at the bottom of each landing pad;

[0015] Step S3: Lower the hull so that the lower ends of each reinforcing bottom frame abut against the ground, and the gap between the hull and the ground forms a maintenance space for maintenance personnel to enter.

[0016] Step S4: Maintenance personnel enter the maintenance space to inspect the bottom of the hull;

[0017] Step S5: After the inspection is completed, remove the landing pad support structures and lift the hull.

[0018] As a preferred embodiment, step S2 includes:

[0019] Step S21: Connect each first side frame to each first boss using each first fastener, and connect each second side frame to each second boss using each second fastener;

[0020] Step S22: Insert multiple support pads into each second space through the lower part of each first space;

[0021] Step S23: Tighten each of the first fasteners and each of the second fasteners, so that each of the first side frames and each of the second side frames drives each of the reinforcing bottom frames to move upward, so as to clamp each of the support pads in the same second interval between the lower end of each of the landing pads and each of the reinforcing bottom frames.

[0022] As a preferred embodiment, step S23 is followed by:

[0023] Step S24: Insert a first wedge between each of the landing pads and each of the first side frames, and insert a second wedge between each of the landing pads and each of the second wedges.

[0024] As a preferred embodiment, in step S5, removing each of the landing pad support structures includes unscrewing each of the first fasteners and each of the second fasteners.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] The landing pad support structure of the present invention includes a support frame and a plurality of support pads. The support frame includes a reinforcing base frame, a first side frame disposed on a first side of the reinforcing base frame, and a second side frame disposed on a second side of the reinforcing base frame. The first side frame and the second side frame are arranged at intervals relative to each other, and the interval between the first side frame and the second side frame forms a first interval. The lower end of the landing pad is inserted into the upper part of the first interval, and the interval between the landing pad and the reinforcing base frame forms a second interval. Both the first side frame and the second side frame are detachably connected to the landing pad. Each support pad is arranged sequentially from bottom to top in the second interval. The support pad located at the top of the second interval abuts against the lower end of the landing pad, and the support pad located at the bottom of the second interval abuts against the upper end of the reinforcing base frame. By setting the landing pad support structure as a combination of a frame structure and support pads, in use, after the hull is lifted, the frame... The lightweight frame structure facilitates the connection of the support frame to the landing pad. After connecting the first and second side frames to both sides of the landing pad, the support pads are inserted into the second interval sequentially, filling the space between the landing pad and the reinforcing bottom frame. The first interval not only reduces the weight of the support frame but also opens the front and rear ends of the second interval, providing space for installing the support pads. The reinforcing bottom frame and multiple landing pads not only provide strong support for the landing pad but also facilitate installation by the workers. Therefore, the landing pad support structure of this invention can connect to the landing pad after the hull is lifted, and the support structure can support the landing pad after the hull is lowered, without requiring adjustments to the hull's position, reducing operational difficulty and avoiding the risk of damage to the hull from fixed piers. Attached Figure Description

[0027] Figure 1 A bottom view of the hovercraft after its apron has been removed;

[0028] Figure 2 Side view of the hovercraft after removing its apron;

[0029] Figure 3 This is a side view of the landing pad support structure of the present invention installed on the landing pad;

[0030] Figure 4 for Figure 3 Sectional view along line AA;

[0031] Figure 5 Top view of the supporting frame;

[0032] Figure 6 To enhance the cross-sectional view of the base frame;

[0033] In the diagram, 100 is the landing pad, 101 is the first boss, 102 is the first fastener, 103 is the second boss, 104 is the second fastener, 200 is the hull, 1 is the support frame, 11 is the reinforcing bottom frame, 111 is the support plate, 112 is the first rib, 113 is the second rib, 12 is the first side frame, 13 is the second side frame, 14 is the first gap, 15 is the second gap, 16 is the first stop boss, 17 is the second stop boss, 2 is the support pad, 31 is the first gasket, 32 is the second gasket, 41 is the first wedge, and 42 is the second wedge. Detailed Implementation

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0035] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms; these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0036] like Figures 3 to 5 As shown, a preferred embodiment of a landing pad support structure of the present invention includes:

[0037] The support frame 1 includes a reinforcing base frame 11, a first side frame 12 disposed on a first side of the reinforcing base frame 11, and a second side frame 13 disposed on a second side of the reinforcing base frame 11. The first side frame 12 and the second side frame 13 are arranged at a distance from each other, and the distance between the first side frame 12 and the second side frame 13 forms a first gap 14. The lower end of the landing pad 100 is inserted into the upper part of the first gap 14, and the distance between the landing pad 100 and the reinforcing base frame 11 forms a second gap 15. The first side frame 12 and the second side frame 13 are detachably connected to the landing pad 100. The first side frame 12 and the second side frame 13 serve to limit the reinforcing base frame 11 to a position that is vertically opposite to the landing pad 100, and the upper part of the first gap 14 formed by the first side frame 12 and the second side frame 13 can play a role in positioning the installation position of the support frame and the landing pad 100.

[0038] Multiple support pads 2 are arranged sequentially from bottom to top in the second interval 15. The support pad 2 at the top of the second interval 15 abuts against the lower end of the landing pad 100, and the support pad 2 at the bottom of the second interval 15 abuts against the upper end of the reinforcing bottom frame 11. The lower part of the first interval 14 formed between the first side frame 12 and the second side frame 13 serves to insert each support pad 2 into the second interval 15. The landing pad support structure is set as a combination of a frame structure and support pads 2. In use, after the hull 200 is lifted, the weight of the frame structure is relatively light, making it easy for operators to connect the support frame to the landing pad 100. After connecting the first side frame 12 and the second side frame 13 to both sides of the landing pad 100, the support pads 2 are inserted sequentially into the second interval 15 through the lower part of the first interval 14, so that the space between the landing pad 100 and the reinforcing bottom frame 11 is filled with support pads 2. The design not only reduces the weight of the support frame 1, but also opens the front and rear ends of the second interval 15, providing space for installing the support pad in the second interval 15. The enhanced bottom frame 11 and multiple landing pads 100 not only provide support strength for the landing pads 100, but also facilitate installation by operators. Therefore, the landing pad support structure of the present invention can connect with the landing pad 100 after the hull 200 is lifted, and the landing pad support structure can support the landing pad 100 after the hull 200 is lowered, without the need to adjust the position of the hull 200, reducing the difficulty of operation and avoiding the risk of the fixed pier damaging the hull 200.

[0039] There are several ways to detachably connect the first side frame 12 and the second side frame 13 to both sides of the landing pad 100. For example, guide rails extending along the length of the landing pad 100 can be provided on both sides of the landing pad 100. Guide grooves can be provided at positions on the first side frame 12 and the second side frame 13 opposite to the landing pad 100. When the support frame 1 needs to be connected to the landing pad 100, the guide grooves are aligned with the guide rails, and then the support frame 1 is pushed along the guide rails so that the guide rails enter the guide grooves. Locking screws are then provided on the side walls of the guide grooves, and the guide rails and guide grooves are locked by tightening the locking screws. With this structure, after the support frame 1 is connected to the landing pad 100, when inserting the support pad 2 into the second interval 15, it is necessary to ensure that the sum of the heights of all support pads 2 is equal to the height of the second interval 15. To prevent the support pad 2 inserted into the second interval 15 from sliding out of the second interval 15 through the first interval 14, door panels can be detachably connected to the ends of the first side frame 12 and the second side frame 13. In this embodiment, a first protrusion 101 is provided on the side of the landing pad 100 opposite to the first side frame 12, and a first fastener 102 for connecting the first side frame 12 is provided in the first protrusion 101; a second protrusion 103 is provided on the side of the landing pad 100 opposite to the second side frame 13, and a second fastener 104 for connecting the second side frame 13 is provided in the second protrusion 103. Specifically, when the first side frame 12 and the second side frame 13 are connected to the landing pad 100, the first fastener 102 and the second fastener 104 are in a loose state, so that the height of the second gap 15 between the reinforcing bottom frame 11 and the landing pad 100 is relatively high. After each support pad 2 is filled into the second gap 15, the first fastener 102 and the second fastener 104 are then tightened, thereby pulling the reinforcing bottom frame 11 upward, so that each support pad 2 is sandwiched between the reinforcing bottom frame 11 and the landing pad 100, which facilitates operation and ensures the structural simplicity of the support frame 1.

[0040] Furthermore, a first gasket 31 is provided between the first boss 101 and the first side frame 12, and a second gasket 32 ​​is provided between the second boss 103 and the second side frame 13. The height of the second interval 15 can be adjusted by adjusting the thickness of the first gasket 31 and the second gasket 32, making the landing pad support structure of the present invention more adaptable and easier to adjust. In this embodiment, both the first gasket 31 and the second gasket 32 ​​are rubber pads. The rubber pads can enhance the friction between the top of the first boss 101 and the first side frame 12, and the friction between the top of the second boss 103 and the second side frame 13, thereby improving the connection stability between the support frame 1 and the landing pad 100.

[0041] In this embodiment, as Figure 4As shown, a first stop protrusion 16, spaced apart from the landing pad 100, is fixed to the upper end of the first side frame 12. The side of the first stop protrusion 16 facing the landing pad 100 abuts against the end of the first protrusion 101 away from the landing pad 100. A second stop protrusion 17, spaced apart from the landing pad 100, is fixed to the upper end of the second side frame 13. The side of the second stop protrusion 17 facing the landing pad 100 abuts against the end of the second protrusion 103 away from the landing pad 100. The arrangement of the first stop protrusion 16 and the second stop protrusion 17 avoids horizontal misalignment between the landing pad 100 and the support frame 1, further improving the connection stability between the support frame 1 and the landing pad 100.

[0042] For ease of installation, in this embodiment, each support pad 2 is a sleeper. In other embodiments of the present invention, the support pad 2 can be a metal block or a metal plate. Further, in this embodiment, one support pad 2 includes two parallel quadrilateral columnar sleepers.

[0043] To further prevent horizontal swaying between the landing pad 100 and the support frame 1, in this embodiment, a first wedge 41 is inserted between the landing pad 100 and the first side frame 12, and a second wedge 42 is inserted between the landing pad 100 and the second side frame 13. Specifically, after tightening the first fastener 102 and the second fastener 104, the first wedge 41 and the second wedge 42 are respectively inserted between the first side frame 12 and the landing pad 100 and between the second side frame 13 and the landing pad 100. In this embodiment, both the first wedge 41 and the second wedge 42 are wooden blocks.

[0044] In this embodiment, as Figure 6 As shown, the reinforcing base plate includes a support plate 111 located at the bottom and a plurality of first ribs 112 and a plurality of second ribs 113 welded to the upper end of the support plate 111. The first ribs 112 and the second ribs 113 are arranged crosswise to form a reinforcing structure for the support plate 111.

[0045] An embodiment of a hovercraft maintenance method includes the following steps:

[0046] Step S1: Lift the hull by 200 mm;

[0047] Step S2: Install the above-mentioned landing pad support structure at the bottom of each landing pad;

[0048] Step S3: Lower the hull 200 so that the lower ends of each reinforcing bottom frame 11 abut against the ground, and the gap between the hull 200 and the ground forms a maintenance space for maintenance personnel to enter.

[0049] Step S4: Maintenance personnel enter the maintenance space to inspect the bottom of the hull at 200mm.

[0050] Step S5: After the inspection is completed, remove the support structures of each landing pad and lift the hull 200 meters.

[0051] Step S2 includes:

[0052] Step S21: Connect each first side frame to each first boss 101 using each first fastener 102, and connect each second side frame to each second boss 103 using each second fastener 104.

[0053] Step S22: Insert multiple support pads 2 into each second interval 15 through the lower part of each first interval 14;

[0054] Step S23: Tighten each of the first fasteners 102 and each of the second fasteners 104, so that each of the first side frames 12 and each of the second side frames 13 drives each of the reinforcing bottom frames 11 to move upward, so as to clamp each of the support pads 2 in the same second interval between the lower end of each landing pad 100 and each of the reinforcing bottom frames 11.

[0055] Step S23 is followed by:

[0056] Step S24: Insert a first wedge 41 between each landing pad 100 and each first side frame 12, and insert a second wedge 42 between each landing pad 100 and each second wedge 42.

[0057] In step S5, removing each landing pad support structure includes unscrewing a first fastener 102 and each second fastener 104.

[0058] In summary, the landing pad support structure of the present invention includes a support frame 1 and a plurality of support pads 2. The support frame 1 includes a reinforcing base frame 11, a first side frame 12 disposed on a first side of the reinforcing base frame 11, and a second side frame 13 disposed on a second side of the reinforcing base frame 11. The first side frame 12 and the second side frame 13 are arranged at a distance from each other, and the distance between the first side frame 12 and the second side frame 13 forms a first gap 14. The lower end of the landing pad 100 is inserted into the upper part of the first gap 14, and the distance between the landing pad 100 and the reinforcing base frame 11 forms a second gap 15. The first side frame 12 and the second side frame 13 are arranged at a distance from each other. All frames 13 are detachably connected to the landing pad 100; the first side frame 12 and the second side frame 13 serve to limit the reinforcing bottom frame 11 to a position that is vertically opposite to the landing pad 100, and the upper part of the first interval 14 formed by the first side frame 12 and the second side frame 13 can serve to position the installation position of the support frame and the landing pad 100; each support pad 2 is arranged sequentially from bottom to top in the second interval 15, the support pad 2 located at the top of the second interval 15 abuts against the lower end of the landing pad 100, and the support pad 2 located at the bottom of the second interval 15 abuts against the upper end of the reinforcing bottom frame 11. The lower part of the first gap 14 formed between the first side frame 12 and the second side frame 13 serves to insert each support pad 2 into the second gap 15. The landing pad support structure is configured as a combination of a frame structure and support pads 2. In use, after the hull 200 is lifted, the frame structure is relatively lightweight, making it easy for operators to connect the support frame to the landing pad 100. After connecting the first side frame 12 and the second side frame 13 to both sides of the landing pad 100, the support pads 2 are sequentially inserted into the second gap 15 through the lower part of the first gap 14, thus filling the space between the landing pad 100 and the reinforcing bottom frame 11 with support pads 2. The arrangement of 14 not only reduces the weight of the support frame 1, but also opens the front and rear ends of the second interval, providing space for installing the support pad in the second interval. The arrangement of the reinforced bottom frame 11 and multiple landing pads 100 not only achieves the support strength for the landing pads 100, but also facilitates the installation by operators. Therefore, the landing pad support structure of the present invention can connect with the landing pad 100 after the hull 200 is lifted, and the landing pad support structure can support the landing pad 100 after the hull 200 is lowered, without the need to adjust the position of the hull 200, reducing the difficulty of operation, and avoiding the risk of the fixed pier damaging the hull 200.

[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A landing pad support structure for supporting a landing pad (100), characterized in that, include: A support frame (1) includes a reinforcing base frame (11), a first side frame (12) disposed on a first side of the reinforcing base frame (11), and a second side frame (13) disposed on a second side of the reinforcing base frame (11). The first side frame (12) and the second side frame (13) are arranged at a distance from each other. The distance between the first side frame (12) and the second side frame (13) forms a first gap (14). The lower end of the landing pad (100) is inserted into the upper part of the first gap (14). The distance between the landing pad (100) and the reinforcing base frame (11) forms a second gap (15). The first side frame (12) and the second side frame (13) are both detachably connected to the landing pad (100). Multiple support pads (2) are arranged sequentially from bottom to top in the second interval (15). The support pad (2) at the top of the second interval (15) abuts against the lower end of the landing pad (100), and the support pad (2) at the bottom of the second interval (15) abuts against the upper end of the reinforcing bottom frame (11). The landing pad (100) has a first boss (101) on the side opposite to the first side frame (12), and the first boss (101) has a first fastener (102) for connecting the first side frame (12); the landing pad (100) has a second boss (103) on the side opposite to the second side frame (13), and the second boss (103) has a second fastener (104) for connecting the second side frame (13). The upper end of the first side frame (12) is fixed with a first stop protrusion (16) spaced apart from the landing pad (100), and the side of the first stop protrusion (16) facing the landing pad (100) abuts against the end of the first protrusion (101) away from the landing pad (100); the upper end of the second side frame (13) is fixed with a second stop protrusion (17) spaced apart from the landing pad (100), and the side of the second stop protrusion (17) facing the landing pad (100) abuts against the end of the second protrusion (103) away from the landing pad (100); A first wedge (41) is inserted between the landing pad (100) and the first side frame (12), and a second wedge (42) is inserted between the landing pad (100) and the second side frame (13).

2. The landing pad support structure according to claim 1, characterized in that, A first gasket (31) is provided between the first boss (101) and the first side frame (12), and a second gasket (32) is provided between the second boss (103) and the second side frame (13).

3. The landing pad support structure according to claim 1, characterized in that, Each of the aforementioned support pads (2) is a sleeper.

4. A method for overhauling a hovercraft, characterized in that, Includes the following steps: Step S1: Lift the hull (200); Step S2: Install the landing pad support structure according to any one of claims 1 to 3 at the bottom of each landing pad (100); Step S3: Lower the hull (200) so that the lower ends of each reinforcing bottom frame (11) abut against the ground, and the gap between the hull (200) and the ground forms a maintenance space for maintenance personnel to enter. Step S4: Maintenance personnel enter the maintenance space to inspect the bottom of the hull (200); Step S5: After the inspection is completed, remove the landing pad support structures and lift the hull (200).

5. The method for overhauling a hovercraft according to claim 4, characterized in that, Step S2 includes: Step S21: Connect each first side frame (12) to each first boss (101) using each first fastener (102), and connect each second side frame (13) to each second boss (103) using each second fastener (104); Step S22: Insert multiple support pads (2) into each of the second intervals (15); Step S23: Tighten each of the first fasteners (102) and each of the second fasteners (104) so ​​that each of the first side frames (12) and each of the second side frames (13) moves each of the reinforcing bottom frames (11) upward to clamp each of the support pads (2) in the same second interval (15) between the lower end of each of the landing pads (100) and each of the reinforcing bottom frames (11).

6. The method for overhauling a hovercraft according to claim 5, characterized in that, After step S23, the following is included: Step S24: Insert a first wedge (41) between each of the landing pads (100) and each of the first side frames (12), and insert a second wedge (42) between each of the landing pads (100) and each of the second side frames (13).

7. The method for overhauling a hovercraft according to claim 4, characterized in that, In step S5, removing each of the landing pad support structures includes unscrewing each of the first fasteners (102) and each of the second fasteners (104).

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