Submarine cable burying plough for extremely soft soil

Abstract

The invention provides a submarine cable burying plow for extremely soft soil, which comprises a skid plate, the skid plate is provided with a first end face, the first end face is provided with a first opening, the skid plate is internally provided with a containing cavity, the containing cavity is communicated with the first opening, the containing cavity is provided with a pressure reducing plate, and the pressure reducing plate is movably arranged; the anti-slip device comprises an anti-slip piece arranged on the skid plate, and the anti-slip piece is movably arranged in the thickness direction of the skid plate body; the pushing part covers the first end face, the pushing part is rotatably arranged on the skid plate, and when the pressure reducing plate extends out of the skid plate, the pushing part is driven by the pressure reducing plate to rotate and pushes the non-slip part to move in the rotating process. According to the submarine cable burying plough for the extremely-soft soil, the current area of the skid plate is matched with the bearing capacity of the extremely-soft soil through which the skid plate passes, the problem that the burying plough sinks or the moving resistance is large due to the fact that the current area of the skid plate and the bearing capacity of the extremely-soft soil are not matched is solved, and meanwhile the risk that the burying plough slides sideways when working on the extremely-soft soil is remarkably reduced.

Description

Technical Field

[0001] This invention generally relates to the field of submarine cable laying technology, and specifically to a submarine cable burial plow for extremely soft soil. Background Technology

[0002] When laying submarine cables in extremely soft soil, the weak bearing capacity of the soil can easily cause the cable laying plow to sink. To address this issue, a common practice is to replace the plow with a larger skid plate before it enters the water. However, due to variations in the bearing capacity of the extremely soft soil at different locations along the laying path, a mismatch can occur between the skid plate and the soil's bearing capacity. This can lead to increased resistance to the plow's movement or even sinking. Furthermore, the plow may also experience lateral slippage as it moves along the designated laying path, causing it to deviate from its intended path. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a submarine cable burial plow for extremely soft soil.

[0004] This application provides a submarine cable laying plow for extremely soft soil, comprising: A skid has a first end face and a first opening. The skid has a receiving cavity that communicates with the first opening. The receiving cavity has a pressure-reducing plate that is movably disposed and can extend out of the skid through the first opening. An anti-slip device, comprising an anti-slip component disposed on a skid plate, the anti-slip component being movably disposed along the thickness direction of the skid plate body; The pusher is covered on the first end face and is rotatably mounted on the skid plate. When the pressure reducing plate extends out of the skid plate, the pusher rotates under the drive of the pressure reducing plate and pushes the anti-slip component to move during the rotation.

[0005] Furthermore, the pressure reducing plate is provided with a pushing part, and the pushing member is provided with a pushing engagement part. The pushing part is inclined downward in the moving direction of the pressure reducing plate. The pushing part can engage with the pushing engagement part when the pressure reducing plate extends out of the skid plate, so as to increase the rotation angle of the pressure reducing plate and increase the displacement of the anti-slip member.

[0006] Furthermore, the pushing part is a pushing surface, which is located on one side of the pressure reducing plate along the width direction. The pushing member is a pushing plate, which includes a driving mating surface for driving cooperation with the pressure reducing plate. The pushing mating part is disposed on one side of the pushing plate along the width direction and extends out of the driving mating surface.

[0007] Furthermore, the first end face is provided with a clearance groove for accommodating the push-fit part. The clearance groove is located on one side of the accommodating cavity along the width direction and is connected to the accommodating cavity. There is a clearance distance between the push-fit surface and the end face of the pressure reducing plate near the first opening.

[0008] Furthermore, a first elastic element is connected between the pusher and the skid plate, the first elastic element being used to apply a spring force to the pusher to rotate toward the first end face.

[0009] Furthermore, the top of the skid is provided with a mounting post, and the mounting post is hinged to an inclined hydraulic cylinder, the push rod of the hydraulic cylinder and the pressure reducing plate are hinged together.

[0010] Furthermore, the anti-slip device includes a mounting base disposed on the skid plate, the mounting base being disposed close to the pusher, the mounting base having a groove extending through the thickness direction of the skid plate, the anti-slip member being a stop plate, the stop plate being slidably disposed in the groove, and the pusher engaging with the stop plate to drive the stop plate to extend out of the bottom surface of the skid plate.

[0011] Furthermore, there are at least two anti-slip devices, and the two anti-slip devices are spaced apart along the width direction of the skid plate, wherein a linkage rod is provided between the two anti-slip plates.

[0012] Furthermore, a spinning plate is provided on one side of the pusher, the spinning plate is provided in a direction away from the pusher, and the linkage rod is located in the rotation path of the spinning plate so that when the pusher rotates, the linkage rod is pushed by the spinning plate to move in a direction close to the skid plate.

[0013] Furthermore, the mounting base is disposed on one side of the skid plate along the width direction, the slide groove includes a connected guide section and an expanded diameter section, the expanded diameter section is located below the guide section, the anti-slip device also includes a second elastic element, the second elastic element is disposed in the expanded diameter section, a stop ring is provided on the outer periphery of the anti-slip plate, the stop ring is located inside the expanded diameter section, an end cap is provided at the end of the expanded diameter section away from the guide section, the stop ring is located in the expanded diameter section and the second elastic element is compressed and disposed between the end cap and the stop ring.

[0014] The submarine cable burial plow for extremely soft soil provided in this application has an extendable pressure-reducing plate on the skid. The pressure-reducing plate can adapt and adjust the area of ​​the skid according to the changes in the bearing capacity of the extremely soft soil, so that the current area of ​​the skid is adapted to the bearing capacity of the extremely soft soil to be traversed. This avoids the problem of the burial plow sinking or excessive movement resistance caused by the mismatch between the two. At the same time, when the pressure-reducing plate extends the skid, it can drive the anti-slip component to insert into the extremely soft soil to limit the burial plow's lateral slippage. Moreover, the greater the extension length of the pressure-reducing plate, the greater the insertion depth of the anti-slip component into the extremely soft soil, which significantly reduces the risk of lateral slippage when the burial plow is operating on extremely soft soil. Attached Figure Description

[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the skid provided in the embodiments of this application; Figure 2 This is a schematic diagram of the cooperation between the pressure reducing plate and the pushing component provided in the embodiments of this application. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0017] Please see Figure 1-2 This application provides a submarine cable burial plow for extremely soft soil, including a plow frame and at least two skids 100 disposed at the bottom of the plow frame. The skids 100 are used to support the burial plow so that it rests on the extremely soft soil. Each skid 100 includes a connected arcuate section 110 and a straight section 120. The end face of the straight section 120 away from the arcuate section 110 is a first end face, and the first end face has a first opening. A receiving cavity is provided within the skid 100, located in the straight section 120, and communicating with the first opening. A pressure-reducing plate 130 is provided in the receiving cavity. The pressure-reducing plate 130 is movably disposed and can extend out of the skid 100 through the first opening to increase the area of ​​the skid 100. When the extension length of the pressure relief plate 130 changes, the area of ​​the skid plate 100 also changes accordingly. When the burial plow moves on extremely soft soil with different bearing capacities, the current area of ​​the skid plate 100 can be adjusted by adjusting the extension length of the pressure relief plate 130, so that the current area of ​​the skid plate 100 is compatible with the bearing capacity of the extremely soft soil to be traversed, thus avoiding the problem of the burial plow sinking or having large movement resistance due to the mismatch between the two.

[0018] The submarine cable burial plow for extremely soft soil also includes an anti-slip device 300 and a pushing member 200. The anti-slip device 300 includes an anti-slip member disposed on the skid plate 100. The anti-slip member is movably disposed along the thickness direction of the skid plate 100 to adjust the depth of the anti-slip member inserted into the extremely soft soil. By being inserted into the extremely soft soil, the anti-slip member can limit the burial plow from sliding along the burial path. The pushing member 200 is covered on the first end face and is rotatably disposed on the skid plate 100 with its rotation axis located above the first opening. When the pressure-reducing plate 130 extends out of the skid plate 100, the pushing member 200 rotates under the drive of the pressure-reducing plate 130 and pushes the anti-slip member to move during the rotation. The lower the bearing capacity of the extremely soft soil, the greater the risk of the burial plow sliding. With the above settings, the longer the extension length of the pressure relief plate 130, the deeper the anti-slip component can be inserted into the extremely soft soil, which significantly reduces the risk of the burial plow sliding when moving on extremely soft soil with weak bearing capacity.

[0019] Optionally, the pressure-reducing plate 130 is slidably disposed in the receiving cavity. The bottom surface and / or top surface of the pressure-reducing plate 130 are provided with reinforcing ribs extending along the length direction, and the cavity wall of the receiving cavity is provided with a sliding groove that slides in cooperation with the reinforcing ribs.

[0020] When laying submarine cables in extremely soft soil, the changes in the bearing capacity of the soil must be measured when determining the laying path. Based on the bearing capacity measurement data, the laying plow can adjust its area in advance as it moves along the laying path, making the laying operation smoother.

[0021] In some embodiments of this application, the pressure-reducing plate 130 is provided with a pushing portion 131, and the pushing member 200 is provided with a pushing engagement portion 230. The pushing portion 131 is inclined downward in the moving direction of the pressure-reducing plate 130, specifically in the direction in which the pressure-reducing plate 130 extends out of the skid plate 100. The pushing portion 131 can engage with the pushing engagement portion 230 when the pressure-reducing plate 130 extends out of the skid plate 100. When the pushing portion 131 and the pushing engagement portion 230 are engaged, as the extension length of the pressure-reducing plate 130 increases, the rotation angle of the pressure-reducing plate 130 in the direction away from the first end face increases, thereby increasing the displacement of the anti-slip member, that is, the deeper the anti-slip member is inserted into the extremely soft soil. The above structure is simple, which helps to simplify the structure of the burial plow and reduce the weight of the burial plow.

[0022] In some embodiments of this application, the pressure-reducing plate 130 has a pushing protrusion on one side along the width direction. The side of the pushing protrusion away from the first end face is the pushing portion 131, that is, the pushing portion 131 is the pushing surface 132. The pushing member 200 is a pushing plate 210, which includes a driving engagement surface for driving cooperation with the pressure-reducing plate 130. The driving engagement surface is the side of the pushing plate 210 near the first end face. The pushing engagement portion 230 is disposed on one side of the pushing plate 210 along the width direction and extends out of the driving engagement surface, wherein the engaging pushing portion 131 and the pushing engagement portion 230 are both located on the same side of the pressure-reducing plate 130. During the process of the pressure-reducing plate 130 extending from the skid plate 100, the end face of the pressure-reducing plate 130 first pushes the pushing plate 210 to rotate, and then the pushing surface 132 and the pushing engagement portion 230 form a pushing engagement and drive the pushing plate 210 to continue rotating in the direction away from the first end face, thereby driving the anti-slip member to continue to move downward. The aforementioned push-up portion 131 and push-up engagement portion 230 can increase the rotation range of the push plate 210 during the extension process of the pressure relief plate 130, thereby increasing the insertion depth of the anti-slip component.

[0023] The push-fit part 230 can be a push-fit plate, the end face of which is inclined and adapted to the push-fit surface 132 to increase the reliability of the push-fit between the two. Optionally, the push-fit part 230 can be a push-fit rod, which is connected to the push plate 210 by a connecting plate. The push-fit part 230 and the push plate 210 are detachably fixedly connected to facilitate the replacement of the push-fit plate, especially to replace push-fit plates of different lengths to adjust the insertion depth range of the anti-slip component.

[0024] In some embodiments of this application, a clearance groove is provided on the first end face. The clearance groove is located on one side of the receiving cavity along the width direction and is connected to the receiving cavity. The length of the clearance groove is less than the length of the receiving cavity. There is a clearance distance between the push surface 132 and the end face of the pressure reducing plate 130 near the first opening. When the pressure reducing plate 130 is located in the receiving cavity and not extended, the push plate 210 covers the first end face, and the push mating part 230 is inserted into the clearance groove. Due to the existence of the clearance distance, there is a gap between the push mating part 230 and the push protrusion.

[0025] In some embodiments of this application, there are two pushers 200, and the two pushers 200 are spaced apart along the width direction of the skid plate 100. The pressure-reducing plate 130 has an extension 133 at one end near the pushers 200, and the extension 133 extends out from the gap between the two pushers 200. The extension 133 has a connecting post 134. The skid plate 100 has a mounting plate, and an inclined hydraulic cylinder connects the mounting plate and the connecting post 134. The cylinder seat of the hydraulic cylinder is hinged to the mounting plate, and the output shaft of the hydraulic cylinder is hinged to the connecting post 134. The hydraulic cylinder can drive the pressure-reducing plate 130 to move and can also support the extended portion of the pressure-reducing plate 130 to improve the bending resistance of the extended portion of the pressure-reducing plate 130.

[0026] Optionally, the pressure-reducing plate 130 has push protrusions on both sides along its width, and each pusher 200 has a push mating part 230 on the side away from each other. The push surfaces 132 of the two push protrusions respectively mate with the push mating parts 230 on the two pushers 200. A first elastic member is connected between each pusher 200 and the skid plate 100. The first elastic member applies a spring force to the pusher 200 to rotate toward the first end face, so that when the pressure-reducing plate 130 retracts into the receiving cavity, the pusher 200 can automatically rotate down and cover the first end face under the action of the first elastic member, and the pusher 200 and the first end face are clamped together. The first end face has two first mounting holes and two clearance grooves. The two clearance grooves are located on both sides of the receiving cavity, and the two first mounting holes are located above the two clearance grooves. The two first elastic members are respectively installed in the two first mounting holes, and the first elastic members are in a stretched state. The first elastic member can be, but is not limited to, a spring.

[0027] In some embodiments of this application, the anti-slip device 300 includes a mounting base 310 disposed on the skid plate 100. The mounting base 310 is disposed near the pusher 200 and has a groove extending through the thickness direction of the skid plate 100. The anti-slip member is a plate 320, which is slidably disposed in the groove. The pusher 200 drives the plate 320 to extend beyond the bottom surface of the skid plate 100. Optionally, there are at least two anti-slip devices 300, and the two anti-slip devices 300 are spaced apart along the width direction of the skid plate 100. A linkage rod 330 is provided between the two plate 320s, and the pusher 200 can act on the linkage rod 330 to drive the two plate 320s to move up and down synchronously.

[0028] Optionally, the mounting base 310 is disposed on one side of the skid plate 100 along its width direction. The slide groove includes a connected guide section and an expanded diameter section. The expanded diameter section is located below the guide section, and its cross-sectional area is larger than that of the guide section, with a stepped surface formed between them. The anti-slip device 300 also includes a second elastic element, which is disposed on the expanded diameter section and sleeved on the outer periphery of the anti-slip plate 320. A stop ring is provided on the outer periphery of the anti-slip plate 320, located inside the expanded diameter section. An end cap is provided at the end of the expanded diameter section away from the guide section. The stop ring is located in the expanded diameter section, and the second elastic element is compressed between the end cap and the stop ring, so as to automatically drive the anti-slip plate 320 to move upward and reset after the pushing member 200 withdraws its pushing force. The guide section and the anti-slip plate 320 slide together. The side wall of the guide section is provided with a through guide groove that extends along the thickness direction of the skid plate 100. The two ends of the linkage rod 330 are respectively connected to the two anti-slip plates 320 through two guide grooves. The lower end of the anti-slip plate 320 can be triangular to reduce the resistance when inserted into extremely soft soil.

[0029] Optionally, a spinning plate 220 is provided on one side of the pusher 200. The spinning plate 220 extends away from the pusher 200, and the linkage rod 330 is located in the rotation path of the spinning plate 220, so that when the pusher 200 rotates, the spinning plate 220 pushes the linkage rod 330 to move in a direction closer to the skid plate 100. The rotating plate may be provided with multiple guide holes to reduce the water resistance of the rotating plate.

[0030] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present 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 present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0031] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A plow for burying submarine cables in extremely soft soil, characterized in that, include: A skid plate, the skid plate having a first end face and a first opening on the first end face, the skid plate having a receiving cavity and the receiving cavity communicating with the first opening, the receiving cavity having a pressure-reducing plate, the pressure-reducing plate being movably disposed and being able to extend out of the skid plate through the first opening; An anti-slip device, comprising an anti-slip member disposed on the skid plate, the anti-slip member being movably disposed along the thickness direction of the skid plate body; A pushing member is provided on the first end face and is rotatably disposed on the skid plate. When the pressure relief plate extends out of the skid plate, the pushing member rotates under the drive of the pressure relief plate and pushes the anti-slip member to move during the rotation.

2. The submarine cable laying plow for extremely soft soil according to claim 1, characterized in that, The pressure-reducing plate is provided with a pushing part, and the pushing member is provided with a pushing engagement part. The pushing part is inclined downward in the moving direction of the pressure-reducing plate. The pushing part can engage with the pushing engagement part when the pressure-reducing plate extends out of the skid plate, so that the rotation angle of the pressure-reducing plate increases, thereby increasing the displacement of the anti-slip member.

3. The submarine cable laying plow for extremely soft soil according to claim 2, characterized in that, The pushing part is a pushing surface, which is located on one side of the pressure reducing plate along the width direction. The pushing member is a pushing plate, which includes a driving mating surface for driving cooperation with the pressure reducing plate. The pushing mating part is disposed on one side of the pushing plate along the width direction and extends out of the driving mating surface.

4. The submarine cable laying plow for extremely soft soil according to claim 3, characterized in that, The first end face is provided with a clearance groove for accommodating the push mating part. The clearance groove is located on one side of the accommodating cavity along the width direction and is connected to the accommodating cavity. There is a clearance distance between the push surface and the end face of the pressure reducing plate near the first opening.

5. The submarine cable laying plow for extremely soft soil according to claim 3, characterized in that, A first elastic element is connected between the pusher and the skid plate, and the first elastic element is used to apply a spring force to the pusher to rotate toward the first end face.

6. The submarine cable laying plow for extremely soft soil according to claim 1, characterized in that, The top of the skid is provided with a mounting post, and the mounting post is hinged to an inclined hydraulic cylinder. The push rod of the hydraulic cylinder is hinged to the pressure reducing plate.

7. The submarine cable laying plow for extremely soft soil according to any one of claims 1-6, characterized in that, The anti-slip device includes a mounting base disposed on the skid plate, the mounting base being disposed close to the pusher, the mounting base having a groove extending through the thickness direction of the skid plate, the anti-slip member being a stop plate, the stop plate being slidably disposed in the groove, and the pusher engaging with the stop plate to drive the stop plate to extend beyond the bottom surface of the skid plate.

8. The submarine cable laying plow for extremely soft soil according to claim 7, characterized in that, The anti-slip device is at least two, and the two anti-slip devices are spaced apart along the width direction of the skid plate, wherein a linkage rod is provided between the two anti-slip plates.

9. The submarine cable laying plow for extremely soft soil according to claim 7, characterized in that, A spinning plate is provided on one side of the pusher, and the spinning plate extends away from the pusher. The linkage rod is located in the rotation path of the spinning plate so that when the pusher rotates, the spinning plate pushes the linkage rod to move in the direction closer to the skid plate.

10. The submarine cable laying plow for extremely soft soil according to claim 7, characterized in that, The mounting base is disposed on one side of the skid plate along the width direction. The slide groove includes a connected guide section and an enlarged diameter section. The enlarged diameter section is located below the guide section. The anti-slip device also includes a second elastic element disposed in the enlarged diameter section. A stop ring is provided on the outer periphery of the anti-slip plate. The stop ring is located inside the enlarged diameter section. An end cap is provided at the end of the enlarged diameter section away from the guide section. The stop ring is located in the enlarged diameter section, and the second elastic element is compressed and disposed between the end cap and the stop ring.

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