Hovercraft heavy load mooring device based on mooring track

Abstract

The invention relates to the field of ship device design, and discloses a hovercraft heavy-load mooring device based on a mooring track, which comprises a mooring frame connected with the mooring track, a plurality of groups of pulley blocks distributed along the length direction are arranged between the mooring frame and the mooring track, and force transmission is realized among the plurality of groups of pulley blocks; the mooring frame is further provided with a ship mooring rope used for being connected with a ship. Load acting on the mooring rope is applied to the mooring frame, the load is transmitted to the mooring track of the hovercraft body through the steel wire rope and the pulley block, the outer load borne by the mooring rope is evenly distributed to all mooring holes of the mooring track through the mooring rope, it can be guaranteed that all the mooring holes can bear load evenly, and it is guaranteed that the mooring track of the hovercraft is not damaged.

Description

Technical Field

[0001] The present invention relates to the field of ship device design, and relates to a heavy-duty mooring device for hovercrafts based on mooring tracks. Background Art

[0002] Hovercrafts have the advantages of high speed and amphibious performance, and are widely used in beach landing, rescue, equipment and personnel transportation and other fields. During the mooring test stage of hovercrafts, it is necessary to test the static thrust of the hovercraft propeller after lifting on land. The propeller thrust of a single hovercraft can reach 100 kN. Therefore, during the test, the hovercraft needs to be reliably moored to ensure the test safety.

[0003] The load-bearing capacity of the mooring equipment of hovercrafts is generally 40 kN, which cannot meet the mooring requirements when testing the static thrust of hovercrafts. There are multiple mooring tracks arranged on the loading deck of hovercrafts, and numerous mooring holes are evenly distributed on each mooring track for fixing and mooring the goods on the ship to the deck, which can be used for mooring the entire hovercraft. Since the load-bearing capacity of a single mooring hole is limited, it is necessary to design a heavy-duty mooring device for hovercrafts that can utilize multiple mooring holes on the mooring track. Summary of the Invention

[0004] The purpose of the present invention is to provide a heavy-duty mooring device for hovercrafts based on mooring tracks, which can evenly distribute the external load to each mooring hole, improving the stability of the mooring device and the test safety.

[0005] The present invention provides a heavy-duty mooring device for hovercrafts based on mooring tracks, including a mooring frame connected to the mooring track, and multiple groups of pulley blocks are arranged between the two along the length direction to achieve force transmission; the mooring frame is also provided with a mooring rope for connecting with the ship;

[0006] The load acting on the mooring rope is applied to the mooring frame, and the load is transmitted to the mooring track of the hull through the steel wire rope and the pulley block. The mooring rope evenly distributes the external load it bears to each mooring hole of the mooring track.

[0007] According to the present invention, further, the pulley block includes a fixed pulley arranged in the mooring hole and a movable pulley arranged on the mooring frame. The number of movable pulleys is the same as that of fixed pulleys, depending on the size of the external load; all the pulley blocks are wound and connected in series by a steel wire rope.

[0008] According to the present invention, further, the average included angle between the steel wire rope and the mooring rope is α, the load-bearing capacity of a single mooring hole is T, the load of the mooring rope is F, the number of pulleys is n, and the safety factor is η.

[0009]

[0010] According to the present invention, further, the mooring frame and the mooring track are fixedly connected by a pressing device, and a plurality of pressing devices are equidistantly distributed along the circumferential direction of the mooring frame.

[0011] According to the present invention, further, the pressing device includes a fixing member, and the fixing member sequentially penetrates through the mooring frame and the mooring track from top to bottom.

[0012] According to the present invention, further, a pressing plate is further arranged on the outer periphery of the fixing member, and a gap is reserved between the pressing plate and the mooring frame.

[0013] According to the present invention, further, waist-shaped holes for fixing the pressing device are formed on the mooring frame.

[0014] According to the present invention, further, the mooring frame includes two horizontally arranged horizontal support rods and a vertical rod arranged between the two horizontal support rods. The width of the vertical rod is wider than the width of the horizontal support rods, and the two ends are integrally connected to the corresponding side horizontal support rods respectively.

[0015] According to the present invention, further, connection holes corresponding to the mooring holes are arranged at both ends of each horizontal support rod for connecting the movable pulley wheels.

[0016] According to the present invention, further, the mooring frame is made of a steel structure to bear the static thrust of the hovercraft.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows

[0018] 1. The hovercraft heavy-duty mooring device of the present invention transmits the external load through the configured pulley block, which can ensure that each mooring hole can bear evenly and prevent the mooring track of the hovercraft from being damaged.

[0019] 2. The hovercraft heavy-duty mooring device of the present invention can bear the static thrust of the hovercraft propeller to ensure the reliable mooring of the hovercraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural diagram of the hovercraft heavy-duty mooring device of the present invention from the first perspective;

[0021] Figure 2 is a schematic structural diagram of the mooring frame of the present invention;

[0022] Figure 3 is of the present invention Figure 1 A-A cross-sectional structural diagram;

[0023] Figure 4 is of the present invention Figure 1 B-B cross-sectional structural diagram;

[0024] Figure 5 is of the present invention Figure 1Schematic diagram of the C-C sectional structure

[0025] Among them, the reference numerals are as follows:

[0026] 10 - Mooring orbit, 11 - Mooring hole, 100 - Mooring frame, 110 - Mounting hole, 200 - Steel wire rope, 300 - Mooring rope, 400 - Pressure plate, 500 - Pin shaft, 510 - Movable pulley, 600 - Fixed pulley, 610 - Stud Specific embodiments

[0027] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention

[0028] As Figure 1 shown, this embodiment provides an air cushion vehicle heavy-duty mooring device based on a mooring orbit, which is fixedly connected to each mooring orbit 10 to ensure that each mooring hole 11 on the mooring orbit 10 can bear the force evenly, and at the same time, the mooring device is stably connected to it to improve the test safety. It includes a mooring frame 100 connected to the mooring orbit 10, and multiple pulley groups are arranged between the two. A steel wire rope 200 is wound around the outer periphery of the multiple pulley groups. The steel wire rope 200 connects the multiple pulley groups in series and its end is connected to the mooring frame 100; a mooring rope 300 for connecting to the ship is arranged at the center position of the mooring frame 100; the mooring rope 300 is connected to the ship, and the load acting on it is applied to the mooring frame 100. The load is transmitted to the mooring orbit 10 of the hull through the steel wire rope 200 and the pulley group. Since the tension force on the steel wire rope 200 is the same everywhere, it can ensure that the concentrated external load can be evenly distributed to each mooring hole 11

[0029] Specifically, the average included angle between the steel wire rope 200 and the mooring rope 300 is α, the bearing capacity of a single mooring hole 11 is T, the load of the mooring rope 300 is F, the number of pulleys is n, and the safety factor is η

[0030]

[0031] Among them, the mooring frame 100 is an axisymmetric structure made of steel. Multiple uniformly distributed cavities are formed on its surface, which can not only reduce the overall weight but also endow it with sufficient strength and stiffness to bear the static thrust of the hovercraft. The mooring frame 100 includes two horizontally arranged support rods in parallel and a vertical rod arranged between the two horizontally arranged support rods. The width of the vertical rod is wider than that of the horizontally arranged support rods, and both ends are integrally connected to the corresponding side of the horizontally arranged support rods respectively. Connection holes 110 corresponding to the mooring holes 11 are arranged at both ends of each horizontally arranged support rod. The pressing device penetrates through the mounting hole 110 and the mooring hole 11 from top to bottom, and fixedly connects the mooring frame 100 to the mooring track 10.

[0032] Specifically, please refer to Figure 5 . The pressing device includes a stud 300. The stud 300 penetrates through the mounting hole 110 and the mooring hole 11 from top to bottom in sequence. Upper and lower nuts are locked at the upper and lower ends of the stud 300 respectively. A pressing plate 400 is also arranged at the bottom of the upper nut. The pressing plate 400 is also fixed by the stud 300. A gap is reserved between the pressing plate 400 and the mooring frame 100. Since the mooring rope 300 is at a certain height from the deck, a turning-over moment will be applied to the mooring frame 100. Therefore, pressing devices are arranged at the four corners of the mooring frame 100 relying on the mooring holes to prevent turning over and improve the overall stability.

[0033] Please refer to Figure 1 . To prevent the mooring holes 11 at the four corners of the mooring track 10 from only bearing the overturning moment and not bearing the horizontal mooring tension of the mooring rope, the mounting holes 110 of the mooring frame need to be waist-shaped holes. The axis of the extending direction of the waist-shaped hole is perpendicular to the length direction of the horizontal rod where it is located, so that the mooring hole 11 can not only bear the overturning moment but also bear the horizontal mooring tension of the mooring rope, making the force on the mooring track 10 more balanced.

[0034] Please refer to Figure 3 and Figure 4 . Symmetrically arranged positioning holes about the center line of its length direction are arranged on both sides of the vertical rod of the mooring frame 100. A movable pulley 510 is installed in the positioning hole by using a pin shaft 500. The movable pulley 510 rotates along the axis of the pin shaft 500. Correspondingly, a fixed pulley 600 is arranged above the mooring hole 11 of the mooring track. A stud 610 penetrates through the fixed pulley 600, the middle nut, the pressing plate, and the mooring hole from top to bottom and is fixed by the lower nut. The top of the stud 610 is fixed by the upper nut. The fixed pulley 600 is located on the outer circle, and the movable pulley 510 is located on the inner circle. One end of the steel wire rope 200 is fixedly connected to the horizontal support rod of the mooring frame 100 in the extending direction of the mooring rope 300, and sequentially winds around the fixed pulley 600 and the movable pulley 510 of each pulley group until all are wound and then is fixedly connected to the other end of the horizontal support rod. The two connection points of the steel wire rope 200 and the horizontal support rod are symmetric about the horizontal center line of the mooring frame.

[0035] The working principle of the present invention:

[0036] The heavy-duty mooring device of the hovercraft utilizes a series of mooring holes 11 on the mooring track. A fixed pulley 600 is installed on the mooring hole 11. The number of pulleys on the mooring hole 11 is determined according to the mooring rope load (i.e., the external load); a plurality of movable pulleys 510 are arranged on the mooring frame, corresponding to the fixed pulleys 600 one by one. A steel wire rope 200 is connected in series among the mooring frame 100, the fixed pulley 600 and the movable pulley 510. The load of the mooring rope 300 acts on the mooring frame 100, and the load is transmitted to the mooring track 10 of the hull through the steel wire rope 200 and the pulley block. While making the mooring track 10 be uniformly stressed everywhere, the overall load-bearing capacity is improved, and the safety of the test is ensured.

[0037] The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention in any way. Any changes and modifications made by those of ordinary skill in the art of the present invention according to the above disclosure are within the scope of protection of the claims.

Claims

1. A heavy-load mooring device for a hovercraft based on a mooring track, characterized in that: It includes a mooring frame connected to a mooring track, and multiple pulley blocks distributed along the length direction are arranged between the two, and force transmission is achieved between the multiple pulley blocks; the mooring frame is also provided with a mooring rope for connecting to a ship; The load acting on the mooring rope is applied to the mooring frame, and the load is transmitted to the mooring track of the hull through the wire rope and the pulley block. The mooring rope evenly distributes the external load it bears to each mooring hole of the mooring track.

2. The heavy-load mooring device for hovercraft based on a mooring track according to claim 1, characterized in that: The pulley block comprises a fixed pulley arranged in a mooring hole and a movable pulley arranged in a mooring frame, the number of the movable pulleys is the same as that of the fixed pulleys, and depends on the size of the external load; all the pulley blocks are connected in series by winding a steel wire rope.

3. The heavy-load mooring device for hovercraft based on a mooring track according to claim 1, characterized in that: The average angle between the steel wire rope and the mooring rope is α, the load capacity of a single mooring hole is T, the load of the mooring rope is F, the number of pulleys is n, the safety factor is η, 4. The heavy-load mooring device for hovercraft based on a mooring track according to claim 1, characterized in that: The mooring frame is fixedly connected to the mooring track via a clamping device, and there are a plurality of clamping devices which are evenly distributed along the circumference of the mooring frame.

5. The heavy-load mooring device for hovercraft based on a mooring track according to claim 4, characterized in that: The clamping device comprises a fixing piece, and the fixing piece passes through the mooring frame and the mooring track in sequence from top to bottom.

6. The heavy-load mooring device for hovercraft based on a mooring track according to claim 5, characterized in that: A pressing plate is also arranged on the outer periphery of the fixing member, and a gap is reserved between the pressing plate and the mooring frame.

7. The heavy-load mooring device for hovercraft based on a mooring track according to claim 4, characterized in that: The mooring frame is provided with a waist-shaped hole for fixing the pressing device.

8. The heavy-load mooring device for hovercraft based on a mooring track according to claim 1, characterized in that: The mooring frame comprises two parallel horizontal support rods and a vertical rod arranged between the two horizontal support rods. The width of the vertical rod is wider than that of the horizontal support rod, and both ends of the vertical rod are respectively connected to the horizontal support rods on the corresponding sides.

9. The heavy-load mooring device for hovercraft based on a mooring track according to claim 8, characterized in that: Both ends of each horizontal support rod are provided with connection holes corresponding to the mooring holes and used for connecting the movable pulley.

10. The heavy-load mooring device for hovercraft based on a mooring track according to claim 1, characterized in that: The mooring frame is a steel structure to bear the static thrust of the hovercraft.

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