A zero-buoyancy cable antenna depth- and shape-fixed orientation device

Abstract

This utility model belongs to the field of underwater cable antenna erection engineering technology, and specifically relates to a zero-buoyancy cable antenna depth-fixing, shape-fixing, and orientation device. It meets the requirements for depth-fixing, shape-fixing, and orientation of underwater cable antennas, is simple, easy to use, and low-cost, and is suitable for deploying fixed underwater cable antennas in nearshore areas. It includes a fixed depth-fixing mechanism and an adaptive depth-fixing mechanism installed in the ocean. The fixed depth-fixing mechanism includes a first fixed anchor placed on the seabed, connected to a horseshoe buckle via a first cable I. Above the horseshoe buckle, a first buoy floating on the sea surface is connected via a first depth-fixing cable, and below the horseshoe buckle, a first counterweight is connected via a first cable II. The adaptive depth-fixing mechanism includes a second fixed anchor placed on the seabed, connected to a second counterweight via a second cable passing through a pulley. Above the pulley, a second depth-fixing cable is connected, and the second depth-fixing cable is connected to a second buoy floating on the sea surface. A horizontally taut cable antenna is connected between the horseshoe buckle and the pulley.

Description

Technical Field

[0001] This utility model belongs to the field of underwater cable antenna erection engineering technology, and specifically relates to a zero-buoyancy cable antenna depth-fixing and orientation device. Background Technology

[0002] The verification and application of cross-domain underwater communication engineering technology requires the installation of fixed underwater cable antennas in near-shore waters. These antennas must be able to adapt to changes in tides, maintain a constant depth relative to the sea surface, maintain a straight-line shape and constant pointing, and be able to adjust their depth as needed, while also being suitable for long-term use.

[0003] One existing solution involves using two boats to erect the cable antenna, with each end fixed to one boat. The antenna's straightening, orientation, and depth determination are achieved by relying on the relative positions of the boats. However, since the boats are already part of the antenna setup, the erection cost is too high and the method is complex. Furthermore, manual control of the boats is required, making it unsuitable for long-term deployment. Another solution involves fixing one end of the cable antenna for depth determination, while the other end is towed by a UUV. The cable's straightening, depth determination, and orientation are achieved through real-time control of the unmanned underwater vehicle. This method also suffers from high economic costs, and the UUV needs to address long-term power supply and system control issues, further increasing the complexity of depth determination.

[0004] Therefore, the aforementioned problems urgently need to be addressed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a zero-buoyancy cable antenna depth-fixing, shape-fixing, and orientation device that meets the depth-fixing, shape-fixing, and orientation requirements of underwater cable antennas. It is simple, easy to use, and low-cost, making it suitable for deploying fixed underwater cable antennas in nearshore areas.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A zero-buoyancy cable antenna depth- and shape-fixing orientation device includes a fixed depth-fixing mechanism and an adaptive depth-fixing mechanism spaced at intervals in the ocean.

[0008] The fixed depth mechanism includes a first fixed anchor placed on the seabed, the first fixed anchor being connected to a horseshoe buckle via a first cable I, a first buoy floating on the sea surface being connected above the horseshoe buckle via a first depth-fixing cable, and a first counterweight being connected below the horseshoe buckle via a first cable II.

[0009] The adaptive depth-keeping mechanism includes a second fixed anchor placed on the seabed. The second fixed anchor is connected to a second counterweight via a second cable passing through a pulley. A second depth-keeping cable is connected above the pulley. The second depth-keeping cable is connected to a second buoy floating on the sea surface.

[0010] A horizontally taut cable antenna is connected between the horseshoe buckle and the pulley.

[0011] Furthermore, the cable antenna is connected to the horseshoe buckle and pulley via a drag net.

[0012] Furthermore, the first depth-fixing cable and the first buoy are connected by a locking mechanism.

[0013] Furthermore, as the tide rises, the first and second buoys rise synchronously with the sea level, thereby causing the cable antenna to be pulled horizontally straightened and moved upward.

[0014] Furthermore, the length of the second cable between the second counterweight and the pulley becomes shorter, and the length of the second cable between the pulley and the second fixed anchor becomes longer; the first cable moves counterclockwise with the first fixed anchor as the origin.

[0015] Furthermore, as the tide recedes, the first and second buoys descend synchronously with the sea level, thereby causing the cable antenna to be pulled horizontally straightened and moved downwards.

[0016] Furthermore, the length of the second cable between the second counterweight and the pulley increases, and the length of the second cable between the pulley and the second fixed anchor decreases; the first cable moves clockwise with the first fixed anchor as the origin.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This application provides a low-cost, easy-to-install underwater depth-fixed antenna installation scheme for zero-buoyancy cable antennas, particularly suitable for installation and use in near-shore areas, especially in waters with limited depth. The device has no electronic control unit; it uses only simple mechanical components to achieve the complex depth-fixed, shape-fixed, and orientation functions of the underwater cable antenna. After installation, the cable antenna automatically maintains a fixed distance from the sea surface, requiring no manual intervention and unaffected by tides. The device can improve the straightness of the cable antenna by adjusting the counterweight. The device achieves accurate orientation of the cable antenna through positioning with two fixed anchors. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a zero-buoyancy cable antenna depth-fixing and shape-fixing orientation device according to the present invention;

[0021] Figure 2 This is a schematic diagram of the fixed depth mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the adaptive depth-fixing mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the adaptive depth-fixed mechanism of this utility model, where the blue diagram shows the changes during high tide, the red diagram shows the changes during low tide, and the black diagram is the default schematic diagram;

[0024] Figure 5 This is a schematic diagram of the working principle of the zero-buoyancy cable antenna depth-fixing and shape-fixing orientation device of this utility model during low tide, where the red diagram shows the changes during low tide and the black diagram is the default schematic diagram.

[0025] Figure 6 This is a schematic diagram of the working principle of the zero-buoyancy cable antenna depth-fixing and shape-fixing orientation device of this utility model during high tide. The red diagram shows the changes during high tide, and the black diagram is the default schematic diagram. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0028] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort prior to the description are within the scope of protection of this utility model.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 this utility model.

[0031] like Figure 1 As shown, a zero-buoyancy cable antenna depth-fixing and orientation device includes a fixed depth-fixing mechanism 1 and an adaptive depth-fixing mechanism 2, which are spaced apart in the ocean.

[0032] The cable antenna 3 completes the functions of depth determination, shape determination, and orientation by working together through the fixed depth determination mechanism 1 and the adaptive depth determination mechanism 2.

[0033] like Figure 2 As shown, the fixed depth mechanism 1 includes a first fixed anchor 11 placed on the seabed. The first fixed anchor 11 is connected to a horseshoe buckle 13 via a first cable I 12. Above the horseshoe buckle 13, a first buoy 15 floating on the sea surface is connected via a first depth-fixing cable 14. Below the horseshoe buckle 13, a first counterweight 17 is connected via a first cable II 16.

[0034] The first depth-fixing cable 14 and the first buoy 15 are connected by a locking mechanism, so that the length of the first depth-fixing cable 14 can be adjusted.

[0035] like Figure 3 As shown, the adaptive depth-fixing mechanism 2 includes a second fixed anchor 21 placed on the seabed. The second fixed anchor 21 is connected to a second counterweight 24 via a second cable 22 passing through a pulley 23. A second depth-fixing cable 25 is connected above the pulley 23. The second depth-fixing cable 25 is connected to a second buoy 26 floating on the sea surface.

[0036] A horizontally straight cable antenna 3 is connected between the horseshoe buckle 13 and the pulley 23; the cable antenna 3 is connected to the horseshoe buckle 13 and the pulley 23 through a drag net sleeve.

[0037] During high and low tides, the second counterweight 24 moves up and down via pulley 23 and the second cable 22. During this process, the first float 15, the first counterweight 17, the first depth-fixing cable 14, the first cable I 12, the first cable II 16, the second float 26, the second depth-fixing cable 25, and the second cable 22 work together to generate a continuous tension force to maintain the shape of the cable antenna 3. According to the principle of force balance, this tension force will not exceed the weight of the counterweight. Due to the limitation of the counterweight, this tension value is limited and not suitable for use with non-zero buoyancy cable antennas. Because the tension required to straighten the antenna by overcoming the negative or positive buoyancy of the cable perpendicular to the direction of the tension force is particularly large, this device is more suitable for the shaping and erection of zero buoyancy cable antennas.

[0038] The principle of the adaptive depth-fixing mechanism 2 is as follows: Figure 4 As shown, the blue diagram represents the changes during high tide, the red diagram represents the changes during low tide, and the black diagram is the default schematic. In the black diagram, A represents the distance between the cable antenna 3 and the sea level. During high tide, the cable antenna 3 moves upward via the buoy, and at this time, the distance A in the blue diagram is equal to the distance A in the black diagram. During low tide, the cable antenna 3 moves downward via the buoy, and at this time, the distance A in the red diagram is equal to the distance A in the black diagram. It can be seen that the distance between the cable antenna 3 and the sea level is consistent regardless of whether it is high or low tide, and the depth is controllable.

[0039] like Figure 5 , 6 As shown, after the device of this application is installed, the cable antenna 3 will move horizontally during high tide and low tide, but this horizontal movement will not affect the communication performance of the cable antenna 3.

[0040] During implementation, the horizontal component of the cable straightening force is increased by widening the distance between the first fixed anchor 11 and the second fixed anchor 21. This horizontal component can also be increased by matching the counterweight and float size. In use, the zero-buoyancy cable antenna experiences some resistance from surge impacts; the longer the antenna, the greater the resistance. Therefore, appropriate counterweights and floats need to be selected based on the cable antenna length to increase the antenna's shape retention capability.

[0041] After the cable antenna 3 is erected at a specified depth underwater using this device, no manual adjustment is required. The device will automatically adjust the distance between the cable antenna 3 and the sea surface through the first buoy 15, the second buoy 26, the first counterweight 17, and the second counterweight 24 to adapt to the changes in seawater tides, thereby achieving real-time depth control. At the same time, the device will use the tension of the first cable I 12 and the second cable 22 at the ends of the first fixed anchor 11 and the second fixed anchor 21 generated by the first counterweight 17 and the second counterweight 24 to straighten the cable antenna 3 and achieve its fixed shape. The orientation of the cable antenna 3 is achieved by the deployment of the first fixed anchor 11 and the second fixed anchor 21.

[0042] like Figure 6 As shown, with the rising tide, the first buoy 15 and the second buoy 26 rise synchronously with the sea level, thereby causing the cable antenna 3 to be pulled horizontally straight and moved upward.

[0043] The length of the second cable 22 between the second counterweight 24 and the pulley 23 becomes shorter, and the length of the second cable 22 between the pulley 23 and the second fixed anchor 21 becomes longer; the first cable 12 moves counterclockwise with the first fixed anchor 11 as the origin.

[0044] Assumption Figure 6 A rectangular coordinate system is established with the horizontal direction as the x-axis and the vertical direction as the y-axis, with the location of the first fixed anchor 11 as the origin; the black line can be regarded as the initial default position and used as the angle reference benchmark, and the red line moves counterclockwise relative to the black line around the intersection of the two lines.

[0045] like Figure 5 As shown, when the tide recedes, the first buoy 15 and the second buoy 26 descend synchronously with the sea level, thereby causing the cable antenna 3 to be pulled horizontally straight and moved downward.

[0046] The length of the second cable 22 between the second counterweight 24 and the pulley 23 increases, and the length of the second cable 22 between the pulley 23 and the second fixed anchor 21 decreases; the first cable 12 moves clockwise with the first fixed anchor 11 as the origin.

[0047] Assumption Figure 5 A rectangular coordinate system is established with the horizontal direction as the x-axis and the vertical direction as the y-axis, with the location of the first fixed anchor 11 as the origin; the black line can be regarded as the initial default position and used as the angle reference benchmark, and the red line moves clockwise around the intersection of the two lines relative to the black line.

[0048] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above embodiments. Those skilled in the art can make various modifications or variations to the present invention without departing from the technical concept of the present invention, and such modifications or variations naturally fall within the protection scope of the present invention.

Claims

1. A zero-buoyancy cable antenna depth- and shape-fixed orientation device, characterized in that: Including a fixed depth-determining mechanism (1) with spacing set in the ocean and an adaptive depth-determining mechanism (2); The fixed depth mechanism (1) includes a first fixed anchor (11) placed on the seabed. The first fixed anchor (11) is connected to a horseshoe buckle (13) via a first cable I (12). Above the horseshoe buckle (13) is a first buoy (15) floating on the sea surface via a first depth-fixing cable (14). Below the horseshoe buckle (13) is a first counterweight (17) connected via a first cable II (16). The adaptive depth-fixing mechanism (2) includes a second fixed anchor (21) placed on the seabed. The second fixed anchor (21) is connected to a second counterweight (24) by passing through a pulley (23) via a second cable (22). A second depth-fixing cable (25) is connected above the pulley (23). The second depth-fixing cable (25) is connected to a second buoy (26) floating on the sea surface. A horizontally straight cable antenna (3) is connected between the horseshoe buckle (13) and the pulley (23).

2. The zero-buoyancy cable antenna depth-fixed and shape-fixed orientation device according to claim 1, characterized in that: The cable antenna (3) is connected to the horseshoe buckle (13) and pulley (23) by dragging the net sleeve.

3. The zero-buoyancy cable antenna depth-fixed and shape-fixed orientation device according to claim 1, characterized in that: The first fixed-depth cable (14) and the first float (15) are connected by a locking method.

4. The zero-buoyancy cable antenna depth-fixed and shape-fixed orientation device according to claim 1, characterized in that: As the tide rises, the first buoy (15) and the second buoy (26) rise synchronously with the sea level, thereby causing the cable antenna (3) to be pulled straight and moved upward.

5. The zero-buoyancy cable antenna depth-fixed and shape-fixed orientation device according to claim 4, characterized in that: The length of the second cable (22) between the second counterweight (24) and the pulley (23) becomes shorter, and the length of the second cable (22) between the pulley (23) and the second fixed anchor (21) becomes longer; The first cable I (12) moves counterclockwise with the first fixed anchor (11) as the origin.

6. The zero-buoyancy cable antenna depth-fixed and shape-fixed orientation device according to claim 1, characterized in that: As the tide recedes, the first buoy (15) and the second buoy (26) descend synchronously with the sea level, thereby causing the cable antenna (3) to be pulled horizontally straight and moved downward.

7. The zero-buoyancy cable antenna depth- and shape-fixing orientation device according to claim 6, characterized in that: The length of the second cable (22) between the second counterweight (24) and the pulley (23) becomes longer, and the length of the second cable (22) between the pulley (23) and the second fixed anchor (21) becomes shorter; The first cable I (12) moves clockwise with the first fixed anchor (11) as the origin.

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