Front beach flushing and burying device for submarine cable laying

Abstract

The front beach flushing and burying device comprises a guide bin, supporting assemblies, a moldboard assembly and a limiting assembly, the guide bin is through in the front-back direction, the two supporting assemblies are symmetrically arranged on the two sides of the guide bin, the length of the supporting assemblies can be adjusted, and the moldboard assembly is arranged at the rear end of the bottom of the guide bin. The limiting assembly is arranged at the rear end of the top of the guiding bin. The moldboard assembly comprises a fixing plate, connecting plates, an adjusting plate, connecting frames and first springs, the fixing plate is connected to the rear end of the bottom of the guide bin through bolts, the connecting plates are vertically arranged at the bottom of the fixing plate, the connecting plates are arranged at the top of the adjusting plate, the connecting frames are arranged at the top of the adjusting plate, and the connecting plates are limited to move in the connecting frames. One end of each first spring is in contact with the connecting plate, and the other end of each first spring is in contact with the inner bottom wall of the connecting frame; wherein the submarine cable can enter from the front end of the guide bin to the rear end of the guide bin to be guided out, and the limiting assembly limits the submarine cable in the moldboard assembly.

Description

Technical Field

[0001] This utility model relates to the field of submarine cable laying, specifically to a foreshore burial device for submarine cable laying. Background Technology

[0002] Submarine cables, as key infrastructure for marine energy transmission and communication network construction, play an irreplaceable role in offshore oil and gas extraction, offshore wind farm construction, remote seabed observation, and international internet connectivity. With the continuous deepening of marine development activities, the requirements for submarine cable laying technology are also increasing. Among these, the burial process is crucial, as it relates to the stability and safety of the cable and directly affects the operational lifespan of the entire submarine cable system.

[0003] A burying device for submarine cable laying is disclosed in Chinese Patent Publication No. CN221885883U. The device uses a plow to create trenches, scattering seabed sand and gravel to both sides of the plow. A connecting frame then drives a guide plate, which, at an angle, contacts the scattered sand and gravel, causing them to quickly gather. The guide plate, with its own weight and angled surface, further flattens the gathered sand and gravel, improving the compactness of the cable burial. However, the plow is a fixed connection structure, which cannot adapt to complex and multifaceted seabed terrain. Direct collisions between the plow and rocks on the seabed can easily cause jamming and damage to the device. Therefore, this invention provides a foreshore burying device for submarine cable laying. Utility Model Content

[0004] To address the aforementioned issues, a foreshore burial device for submarine cable laying is provided. By changing the plow plate assembly to a split structure and adding a first liner to the cover plate, the problems of the device's inability to adjust its depth according to the complex and multifaceted seabed topography, as well as the device's easy wear and high maintenance costs in the later stages, are solved.

[0005] To address the existing technical problems, this utility model provides a foreshore burial device for submarine cable laying, including a guide chamber, a support assembly, a plow assembly, and a limiting assembly. The guide chamber is connected front to back, and two sets of the support assemblies are symmetrically arranged on both sides of the guide chamber. The length of the support assembly is adjustable. The plow assembly is located at the rear end of the bottom of the guide chamber, and the limiting assembly is located at the rear end of the top of the guide chamber.

[0006] The plow plate assembly includes a fixed plate, a second connecting plate, an adjusting plate, a connecting frame, and a first spring. The fixed plate is bolted to the bottom rear end of the guide chamber. The second connecting plate is vertically arranged at the bottom of the fixed plate. Several second connecting plates are arranged at the top of the adjusting plate. Several connecting frames are arranged at the top of the adjusting plate. The second connecting plates restrict movement within the connecting frames. Several first springs are arranged inside the connecting frames. One end of the first spring contacts the second connecting plate, and the other end of the first spring contacts the bottom wall of the inner wall of the connecting frame.

[0007] The submarine cable can enter from the front end of the guide chamber and exit from the rear end of the guide chamber, and the limiting component limits the submarine cable in the plow plate assembly.

[0008] Preferably, the limiting assembly includes a positioning plate, a rotating plate, a limiting post, a limiting cylinder, a second spring, and a limiting plate. The positioning plate is detachably connected to the rear end of the guide compartment. The rotating plate is connected to the top end of the positioning plate. The limiting post extends from the lower surface of the rotating plate. The limiting cylinder is sleeved on the limiting post and can move axially along the limiting post. The second spring is sleeved on the limiting post and is constrained between the limiting cylinder and the rotating plate. The limiting plate is rotatably connected to the end of the limiting cylinder away from the rotating plate. The limiting plate can contact the submarine cable.

[0009] Preferably, the limiting assembly further includes a fixed seat and a first telescopic rod. The fixed seat is fixed to the top of the guide compartment. One end of the first telescopic rod is rotatably connected to the fixed seat, and the other end of the first telescopic rod is rotatably connected to the side of the rotating plate away from the limiting post. The rotating plate is rotatably connected to the positioning plate.

[0010] Preferably, three sets of guide rollers are provided in the guide chamber, the guide rollers are arranged along the axial direction of the guide chamber, the three sets of guide rollers can contact the outer wall of the submarine cable, and at least one set of guide rollers contacts the bottom wall of the submarine cable.

[0011] Preferably, the front end of the guide chamber is provided with a first connecting plate, and the guide chamber also includes a conical sleeve. The conical sleeve is a frustum structure that runs through the front and back. The conical sleeve is bolted to the first connecting plate, and the cable can pass through the conical sleeve and enter the guide chamber.

[0012] Preferably, the foreshore flushing and burying device for laying submarine cables further includes a high-pressure water gun, which is rotatably mounted in the middle section of the bottom of the guide chamber, and the high-pressure water gun is connected to external pressurized water.

[0013] Preferably, the foreshore burial device for laying submarine cables further includes a cover plate and a first liner plate. One end of the cover plate is rotatably connected to the limiting plate. Two sets of gathering plates are symmetrically arranged on the bottom surface of the cover plate. The two sets of gathering plates gradually move away from each other along the direction of movement of the guide chamber. The bottom surface of the gathering plate is detachably connected to the first liner plate.

[0014] Preferably, the support assembly includes a support base, a front support plate, a rear support plate, a second telescopic rod, and a third telescopic rod. The support base is detachably connected to the side wall of the guide compartment. One end of the second telescopic rod is rotatably connected to one side of the support base, and the other end of the second telescopic rod is rotatably connected to the top of the front support plate. One end of the third telescopic rod is rotatably connected to one side of the support base, and the other end of the third telescopic rod is rotatably connected to the top of the rear support plate.

[0015] Preferably, the foreshore burial device for laying submarine cables further includes a connecting frame, and the connecting frame is fixed to the front end of the top of the guide chamber.

[0016] The advantages of this utility model compared to the prior art are:

[0017] 1. By setting the plow plate assembly as a split structure, the fixed plate and the adjusting plate are connected by a connecting plate and a connecting frame. A first spring is installed in the connecting frame. The contraction of the support component drives the guide chamber to press down, allowing the plow plate assembly to penetrate below the seabed. Dragging the guide chamber can drive the plow plate assembly to trench the seabed. Because the plow plate assembly is a split structure, when the lower part of the plow plate assembly enters below the seabed, the first spring can further press down on the seabed, thereby deepening the trench depth. When the seabed is uneven, the adjusting plate can move vertically, providing a buffering effect to reduce the wear of uneven terrain on the plow plate assembly and increase the adaptability of the device.

[0018] 2. To further optimize the device's ability to bury submarine cables, a limiting component is installed at the rear end of the guide chamber. The limiting plate presses the submarine cable down into the plow plate assembly. When the plow plate assembly moves on the seabed to form a trench, the submarine cable can be pressed down into the trench by the limiting plate. At the same time, by setting a cover plate, the submarine cable can be buried. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a foreshore burial device for submarine cable laying according to this utility model. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the structure of a foreshore burial device for submarine cable laying according to this utility model. Figure 2 .

[0021] Figure 3 This is an exploded structural diagram of the plow plate assembly of a foreshore burial device for laying submarine cables, according to this utility model.

[0022] Figure 4 This is a schematic diagram of the limiting component structure of a foreshore burial device for laying submarine cables according to this utility model.

[0023] Figure 5 This is a schematic diagram of the guide chamber structure of a foreshore burial device for laying submarine cables, according to this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of a foreshore burial device for submarine cable laying according to this utility model. Figure 3 .

[0025] The components in the diagram are labeled as follows: guide chamber 1, guide roller 10, first connecting plate 11, cone sleeve 12, connecting frame 2, support assembly 3, support seat 30, front support plate 31, rear support plate 32, second telescopic rod 33, third telescopic rod 34, plow plate assembly 4, fixing plate 40, second connecting plate 41, adjusting plate 42, connecting frame 43, limiting assembly 5, positioning plate 50, rotating plate 51, limiting post 52, second spring 53, limiting plate 54, fixing seat 55, first telescopic rod 56, high-pressure water gun 6, cover plate 7, and first liner plate 70. Detailed Implementation

[0026] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0027] like Figure 1-6 As shown, a foreshore burial device for submarine cable laying includes a guide chamber 1, a support assembly 3, a plow plate assembly 4, and a limiting assembly 5. The guide chamber 1 is continuous from front to back. Two sets of support assemblies 3 are symmetrically arranged on both sides of the guide chamber 1. The length of the support assemblies 3 can be adjusted. The plow plate assembly 4 is located at the rear end of the bottom of the guide chamber 1, and the limiting assembly 5 is located at the rear end of the top of the guide chamber 1. The plow plate assembly 4 includes a fixing plate 40, a second connecting plate 41, an adjusting plate 42, a connecting frame 43, and a first spring. The fixing plate 40 is bolted to the guide chamber. At the bottom rear end, a second connecting plate 41 is vertically installed at the bottom of the fixed plate 40, and several second connecting plates 41 are installed at the top of the adjusting plate 42. Several connecting frames 43 are installed at the top of the adjusting plate 42. The second connecting plates 41 are restricted to move within the connecting frames 43. Several first springs are installed inside the connecting frames 43. One end of the first spring contacts the second connecting plate 41 and the other end of the first spring contacts the bottom wall inside the connecting frame 43. The submarine cable can enter from the front end of the guide chamber 1 and exit from the rear end of the guide chamber 1. The limiting component 5 limits the submarine cable within the plow plate component 4.

[0028] The traction device on the sea surface is connected to the guide chamber 1 via ropes and other structures, enabling the device to move forward as a whole. The submarine cable is introduced through the front opening of the guide chamber 1 and exited through the rear opening, entering the plow plate assembly 4. The limiting component 5 presses the submarine cable into the plow plate assembly 4. When the device is submerged, the plow plate assembly 4 contacts the seabed surface. The extension and retraction of the control support component 3 drives the plow plate assembly 4 below the seabed surface, and the traction device propels the device forward. The plow plate assembly 4 then creates a trench on the seabed. The submarine cable, pressed by the limiting component 5, enters the trench created by the plow plate assembly 4, and the movement of the seawater buries the cable. The seabed topography is complex and multifaceted. Traditional plow plates are fixed structures, and when faced with complex and varied seabed topography, they directly impact rocks and other objects on the seabed surface, easily causing wear and jamming. In the device provided by this utility model, the plow plate assembly 4 is a split structure, such as... Figure 3 As shown, a baffle is provided on the upper edge of the connecting frame 43, and the lower end of the second connecting plate 41 is enlarged. The enlarged end is restricted to move within the connecting frame 43. When the adjusting block is pressed down into the seabed, the first spring (not shown in the figure) inside the connecting frame 43 contracts. The first spring can give the adjusting block a downward force, further deepening the trenching depth of the plow plate assembly 4. At the same time, when the device encounters uneven rocks during its forward movement, the first spring has deformation capability, and the adjusting plate 42 can move in the vertical direction, thereby driving the adjusting plate 42 to jump over obstacles, reducing the direct impact of the plow plate assembly 4 on the rocks, thus avoiding jamming when the device moves forward, increasing the adaptability of the device, and reducing the later maintenance cost.

[0029] The limiting assembly 5 includes a positioning plate 50, a rotating plate 51, a limiting post 52, a limiting cylinder, a second spring 53, a limiting plate 54, a fixed base 55, and a first telescopic rod 56. The positioning plate 50 is detachably connected to the rear end of the guide chamber 1. The rotating plate 51 is rotatably connected to the top of the positioning plate 50. The limiting post 52 extends from the lower surface of the rotating plate 51. The limiting cylinder is fitted onto the limiting post 52 and can move axially along the limiting post 52. The second spring 53 is fitted onto the limiting post 52 and is confined between the limiting cylinder and the rotating plate 51. The limiting plate 54 is rotatably connected to the end of the limiting cylinder away from the rotating plate 51 and can contact the submarine cable. The fixed base 55 is fixed to the top of the guide chamber 1. One end of the first telescopic rod 56 is rotatably connected to the fixed base 55, and the other end of the first telescopic rod 56 is rotatably connected to the side of the rotating plate 51 away from the limiting post 52. Figure 4As shown, the limiting plate 54, under the action of the second spring 53, presses the submarine cable downwards to prevent it from floating due to the buoyancy of the seawater. The pressed submarine cable can then enter the trench opened by the plow plate assembly 4 during its movement. A fixed seat 55 and a first telescopic rod 56 are provided on the top of the guide chamber 1. The pressure exerted by the limiting plate 54 on the submarine cable can be further controlled by adjusting the extension and retraction of the first telescopic rod 56. At the same time, when submarine cables of different sizes are introduced into the guide chamber 1, adjusting the first telescopic rod 56 can drive the limiting plate 54 to press down on the submarine cables of different sizes.

[0030] Three sets of guide rollers 10 are installed inside the guide chamber 1. The guide rollers 10 are arranged axially along the guide chamber 1, and all three sets of guide rollers 10 can contact the outer wall of the submarine cable, with at least one set of guide rollers 10 contacting the bottom wall of the submarine cable. A first connecting plate 41 is provided at the front end of the guide chamber 1. The guide chamber 1 also includes a conical sleeve 12, which is a frustum structure that extends from front to back. The conical sleeve 12 is bolted to the first connecting plate 41, allowing the submarine cable to pass through the conical sleeve 12 and enter the guide chamber 1. Figure 5 As shown, the submarine cable enters the guide chamber 1. The guide rollers 10 reduce friction between the submarine cable and the guide chamber 1, preventing the cable from getting stuck and affecting laying efficiency. Since different sizes of submarine cables can be introduced into the guide chamber 1, a set of guide rollers 10 are installed at the bottom of the guide chamber 1 to always be in contact with the submarine cable. The conical sleeve 12 reduces water resistance during the movement of the guide chamber 1 on the seabed, and the streamlined conical sleeve 12 can accelerate its movement speed in seawater.

[0031] The foreshore burial device used for submarine cable laying also includes a high-pressure water gun 6, which is rotatably mounted in the middle section of the bottom of the guide chamber 1, and is connected to external pressurized water. Figure 1 , Figure 6 As shown, the high-pressure water gun 6 is positioned in front of the plow plate assembly 4. The high-pressure water gun 6 is aimed at the seabed and the high-pressure water is aimed at the seabed, which is flushed out to create a trench for laying submarine cables. The plow plate assembly 4 behind it is further deepened in the trench that has been flushed out, which is conducive to the burial of submarine cables.

[0032] The foreshore burial device used for laying submarine cables also includes a connecting frame 2. The connecting frame 2 is fixed to the front end of the top of the guide chamber 1. The traction device on the sea surface can be connected to the connecting frame 2 by ropes, thereby driving the guide chamber 1 forward.

[0033] The foreshore burial device for submarine cable laying also includes a cover plate 7 and a first liner plate 70. One end of the cover plate 7 is rotatably connected to a limiting plate 54. Two sets of gathering plates are symmetrically arranged on the bottom surface of the cover plate 7. The two sets of gathering plates gradually move away from each other along the moving direction of the guide chamber 1. The bottom surface of the gathering plates is detachably connected to the first liner plate 70. Figure 6As shown, the first liner plate 70 can contact the seabed surface. During the forward movement of the guide chamber 1, the cover plate 7 is dragged and can drive the gathering plate to bury the submarine cable with the covering material on both sides of the trench. Since the gathering plate on the bottom of the cover plate 7 is in contact with the sand on the seabed surface for a long time, it is prone to wear. In the later maintenance, the maintenance cost can be saved by replacing the first liner plate 70 in time.

[0034] The support assembly 3 includes a support base 30, a front support plate 31, a rear support plate 32, a second telescopic rod 33, and a third telescopic rod 34. The support base is detachably connected to the side wall of the guide compartment 1. One end of the second telescopic rod 33 is rotatably connected to one side of the support base 30, and the other end is rotatably connected to the top of the front support plate 31. One end of the third telescopic rod 34 is rotatably connected to one side of the support base 30, and the other end is rotatably connected to the top of the rear support plate 32. The arrangement of the front support plate 31 and the rear support plate 32 increases the contact area between the device and the seabed surface, and the arrangement of the second telescopic rod 33 and the third telescopic rod 34 improves the adaptability of the device to complex and multifaceted seabed conditions.

[0035] It should be noted that the first telescopic rod 56, the second telescopic rod 33, and the third telescopic rod 34 are preferably electric telescopic rods. The electric telescopic rods are wirelessly connected to the control system, which controls the extension and retraction of the telescopic rods. It is also preferable to set lining plates on the bottom surface of the front support plate 31 and the rear support plate 32, and to set lining plates on the front end and bottom surface of the adjusting plate 42. Since these components need to be in contact with the seabed for a long time, the maintenance cost can be reduced by replacing the lining plates.

[0036] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A pre-beach burying device for laying a submarine cable, characterized in that, The utility model provides a kind of submarine cable guiding device, including guide bin (1), support assembly (3), plow plate assembly (4) and limiting component (5), the guide bin (1) is through and through front and back, two groups of support assembly (3) are symmetrically arranged in the guide bin (1) two sides, the support assembly (3) can adjust length, the plow plate assembly (4) is arranged in the rear end of the guide bin (1) bottom, the limiting component (5) is arranged in the rear end of the guide bin (1) top; The plow plate assembly (4) includes a fixed plate (40), a second connecting plate (41), an adjusting plate (42), a connecting frame (43), and a first spring. The fixed plate (40) is connected to the rear end of the bottom of the guide bin (1) by bolts. The second connecting plate (41) is vertically arranged on the bottom of the fixed plate (40). The adjusting plate (42) has a plurality of second connecting plates (41) arranged on its top. A plurality of connecting frames (43) are arranged on the top of the adjusting plate (42). The second connecting plate (41) is limited to move in the connecting frame (43). The first spring is arranged in the connecting frame (43), with one end of the first spring contacting the second connecting plate (41) and the other end of the first spring contacting the inner bottom wall of the connecting frame. The submarine cable can enter from the front end of the guide bin (1) to the rear end of the guide bin (1) and be guided out. The limiting component (5) limits the submarine cable in the plow plate assembly (4).

2. A pre-beach burying device for laying a submarine cable according to claim 1, characterized in that The limiting component (5) includes a positioning plate (50), a rotating plate (51), a limiting column (52), a limiting cylinder, a second spring (53), and a limiting plate (54). The positioning plate (50) is detachably connected to the rear end of the guide bin (1). The rotating plate (51) is connected to the top end of the positioning plate (50). The lower surface of the rotating plate (51) extends to form the limiting column (52). The limiting cylinder is sleeved on the limiting column (52) and can move axially along the limiting column (52). The second spring (53) is sleeved on the limiting column (52). The second spring (53) is limited between the limiting cylinder and the rotating plate (51). The limiting plate (54) is rotatably connected to one end of the limiting cylinder away from the rotating plate (51). The limiting plate (54) can contact the submarine cable.

3. A pre-beach burying device for laying a submarine cable according to claim 2, characterized in that The limiting component (5) further includes a fixed seat (55) and a first telescopic rod (56). The fixed seat (55) is fixed to the top of the guide bin (1). One end of the first telescopic rod (56) is rotatably connected to the fixed seat (55). The other end of the first telescopic rod (56) is rotatably connected to one side of the rotating plate (51) away from the limiting column (52). The rotating plate (51) is rotatably connected to the positioning plate (50).

4. A pre-beach burying device for laying a submarine cable according to claim 1, characterized in that, Three groups of guide rollers (10) are arranged in the guide bin (1). The guide rollers (10) are arranged axially along the guide bin (1). The three groups of guide rollers (10) can contact the outer wall of the submarine cable. At least one group of guide rollers (10) contacts the bottom wall of the submarine cable.

5. A pre-beach burying device for laying a submarine cable according to claim 1, characterized in that, The guiding bin (1) is provided with a first connecting plate (11) at the front end, and further comprises a taper sleeve (12) which is a circular truncated cone structure penetrating from front to back, and the taper sleeve (12) is connected to the first connecting plate (11) by bolts and submarine cables can penetrate the taper sleeve (12) into the guiding bin (1).

6. A pre-beach burying device for laying a submarine cable according to claim 1, characterized in that, The front beach flushing and burying device for submarine cable laying further comprises a high-pressure water gun (6) which is rotatably arranged in the middle section of the bottom of the guiding bin (1), and the high-pressure water gun (6) is connected with high-pressure water.

7. A pre-beach burying device for laying a submarine cable according to claim 2, characterized in that, The front beach flushing and burying device for submarine cable laying further comprises a cover plate (7) and a first lining plate (70), one end of the cover plate (7) is rotatably connected to the limiting plate (54), two groups of converging plates are symmetrically arranged on the bottom surface of the cover plate (7), the two groups of converging plates gradually move away along the moving direction of the guiding bin, and the bottom surface of the converging plate is detachably connected to the first lining plate (70).

8. A pre-beach burying device for laying a submarine cable according to claim 1, characterized in that, The supporting assembly (3) comprises a supporting seat (30), a front supporting plate (31), a rear supporting plate (32), a second telescopic rod (33) and a third telescopic rod (34), the supporting seat (30) is detachably connected to the side wall of the guiding bin (1), one end of the second telescopic rod (33) is rotatably connected to one side of the supporting seat (30), the other end of the second telescopic rod (33) is rotatably connected to the top of the front supporting plate (31), one end of the third telescopic rod (34) is rotatably connected to one side of the supporting seat (30), and the other end of the third telescopic rod (34) is rotatably connected to the top of the rear supporting plate (32).

9. A pre-beach burying device for laying a submarine cable according to claim 1, characterized in that, The front beach flushing and burying device for submarine cable laying further comprises a connecting frame (2), and the top of the guiding bin is fixed with the connecting frame (2).

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