Cable layer rock-throwing pipe structure

Abstract

The application provides a rock falling pipe structure for a submarine cable rip-rap ship, which comprises a rock falling pipe, the rock falling pipe comprises a plurality of split pipes arranged in sequence along an axial direction, the split pipes are hollow truncated cone structures and can be sleeved and matched with each other between two adjacent split pipes, the outer circumferential surface of the split pipe is provided with a limiting piece, the limiting piece is arranged close to the large-diameter end of the split pipe, the limiting piece is used for axial limiting and matching with the split pipe sleeved on the outer circumferential surface of the split pipe segment, wherein the part of the split pipe located on the side away from the large-diameter end of the limiting piece forms a sleeved and matched segment, and the maximum outer diameter of the sleeved and matched segment is smaller than the maximum inner diameter of the split pipe. The rock falling pipe structure for the submarine cable rip-rap ship provided by the application can form movable sleeved and matched connection between two adjacent split pipes when being stacked, so that the two split pipes are prevented from being clamped when being stacked, the difficulty of separating the stacked rock falling pipe is reduced, the surface of the stacked rock falling pipe is prevented from being damaged when being separated, and the service life of the rock falling pipe structure is prolonged.

Description

Technical Field

[0001] This utility model generally relates to the field of submarine cable laying technology, and specifically to a rock-dropping pipe structure for a submarine cable rock-dropping vessel. Background Technology

[0002] During submarine cable laying, rock-dropping vessels use rock-dropping pipes to drop rocks onto the cable, creating a protective layer of crushed stone. To save storage space on the rock-dropping vessels, chain-type flexible rock-dropping pipes are used. Existing chain-type flexible rock-dropping pipes consist of two connecting chains and a pipe body located between the chains. The pipe body comprises multiple rock-dropping pipe segments, each connected to two connecting chains, and each segment is a hollow frustum-shaped cone. During non-operational periods, multiple rock-dropping pipe segments can be stacked and stored.

[0003] However, the aforementioned chain-type flexible rockfall pipe has the following problems:

[0004] When stacking and storing rockfall pipes, there may be situations where two adjacent rockfall pipe sections are tightly interlocked, which increases the difficulty of separating them and can easily cause damage to the outer surface of the rockfall pipe sections during separation. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a rock-dropping pipe structure for a submarine cable rock-dropping vessel.

[0006] This application provides a rock-dropping pipe structure for a submarine cable rock-dropping vessel, including a rock-dropping pipe. The rock-dropping pipe includes multiple split pipes arranged sequentially along the axial direction. Each split pipe is a hollow frustum structure, and adjacent split pipes can be fitted together. A limiting member is provided on the outer circumferential surface of the split pipe, and the limiting member is located near the large-diameter end of the split pipe. The limiting member is used to axially limit the fit with the split pipe fitted on the outer circumference of its respective split pipe section. The portion of the split pipe located on the side of the limiting member away from the large-diameter end forms a fitting section, and the maximum outer diameter of the fitting section is smaller than the maximum inner diameter of the split pipe.

[0007] Furthermore, the limiting component is a limiting ring, which is sleeved on the outer periphery of the split tube.

[0008] Furthermore, at least one of the limiting member and the split tube in which it is located is provided with an elastic element so that when two adjacent split tubes are sleeved together, the limiting member and the split tube sleeved on the outer periphery of the split tube segment in which it is located can make elastic contact.

[0009] Furthermore, the elastic element is located on the side of the limiting element near the small-diameter end of the split tube.

[0010] Furthermore, the difference between the maximum inner diameter of the split tube and the maximum outer diameter of the sleeve fitting section is 5-10mm.

[0011] The rockfall pipe structure for submarine cable rock-dropping vessels provided in this application features a limiting component on the outer circumference of the split pipes. The maximum outer diameter of the connecting section of the split pipe is smaller than the maximum inner diameter of the split pipe. When two adjacent split pipes are connected, the large-diameter end of the outer split pipe axially limits the connection with the limiting component on the inner split pipe. Furthermore, a movable gap is formed between the connecting sections of the outer and inner split pipes. This ensures that adjacent split pipes form a movable connection when stacked, preventing jamming and reducing the difficulty of separating stacked rockfall pipes. It also prevents surface damage during separation and extends the service life of the rockfall pipe structure. Attached Figure Description

[0012] 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:

[0013] Figure 1 This is a schematic diagram of the rockfall pipe structure provided in the embodiments of this application;

[0014] Figure 2 This is a half-sectional schematic diagram of the split tube provided in the embodiment of this application. Detailed Implementation

[0015] 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 relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0016] Please refer to the attached document. Figure 1-2 This application provides a rock-dropping pipe structure for a submarine cable-operated rock-dropping vessel, including a rock-dropping pipe and at least two chains 100. The rock-dropping pipe is a split structure comprising multiple split tubes 200, which are arranged sequentially along the axial direction of the rock-dropping pipe. Each split tube 200 is movably connected to two chains 100. Each split tube 200 is a hollow frustum structure, and any two adjacent split tubes 200 can be fitted together. When the rock-dropping pipe structure is in use, adjacent split tubes 200 are separated, and their adjacent ends are fitted together to prevent stones from falling out between adjacent split tubes 200. When the rock-dropping pipe structure is in a stowed state, any two adjacent split tubes 200 are fitted together.

[0017] A limiting member 310 is provided on the outer circumferential surface of the split tube 200, and the limiting member 310 is located near the large-diameter end of the split tube 200. The limiting member 310 is used to axially limit and cooperate with the split tube 200 sleeved on the outer circumference of its segment. The part of the split tube 200 located on the side of the limiting member 310 away from the large-diameter end forms a sleeve-fitting section. Specifically, when accommodating the rockfall pipe structure, adjacent split tubes 200 are stacked, wherein the split tube 200 is sleeved in the sleeve-fitting section of the adjacent split tube 200, and the large-diameter end of the split tube 200 is axially limited and cooperated with the limiting member 310 provided on the adjacent split tube 200. The maximum outer diameter of the fitting section is smaller than the maximum inner diameter of the split tube 200, ensuring that there is a movable gap between the split tube 200 fitted around the fitting section and the fitting section. This ensures that two adjacent split tubes 200 form a movable fitting when stacked, preventing them from getting stuck. This reduces the difficulty of separating stacked rockfall pipes, prevents surface damage during separation, and extends the service life of the rockfall pipe structure.

[0018] Optionally, the difference between the maximum inner diameter of the split tube 200 and the maximum outer diameter of the fitting section is 5-10mm, meaning the width of the movable gap is 2.5-5mm. This design ensures a movable fitting between adjacent split tubes 200 and also reduces the length of the rockfall tube in its retracted state.

[0019] Optionally, the limiting member 310 is a limiting ring, which is fixedly sleeved on the outer periphery of the split tube 200.

[0020] In some embodiments of this application, a mounting ring 210 is provided on the outer periphery of the large-diameter end of the split tube 200. The mounting ring 210 has two symmetrically arranged connecting plates 220, each of which has a through hole 221. The chain links of the two chains 100 pass through the through hole 221, so that the split tube 200 is movably connected to the two chains 100. There is a gap between the mounting ring 210 and the limiting member 310.

[0021] In some embodiments of this application, at least one of the limiting member 310 and the split tube 200 to which it is located is provided with an elastic member 320, so that when two adjacent split tubes 200 are sleeved together, the limiting member 310 and the split tube 200 sleeved on the outer periphery of the split tube 200 segment to which it is located can make elastic contact. This arrangement can reduce the risk of deformation and damage to the large-diameter end of the split tube 200.

[0022] The split tube 200 has an elastic element 320 at its large-diameter end, and / or the limiting member 310 has an elastic element 320 on the side near the small-diameter end of the split tube 200. Preferably, the limiting member 310 has an elastic element 320 on the side near the small-diameter end of the split tube 200, which can reduce the risk of damage to the elastic element 320 and extend the service life of the elastic element 320.

[0023] Among them, the elastic element 320 can be, but is not limited to, a fluororubber ring, etc.

[0024] 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 this utility model 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 this utility model. 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 this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] 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 utility model involved in this application is not limited to the 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 rock-dropping pipe structure for a submarine cable-operated rock-dropping vessel, characterized in that, The device includes a rockfall pipe, which comprises multiple split pipes arranged sequentially along the axial direction. Each split pipe is a hollow frustum structure, and adjacent split pipes can be fitted together. A limiting member is provided on the outer circumferential surface of each split pipe, and the limiting member is located near the large-diameter end of the split pipe. The limiting member is used to axially limit the engagement with the split pipe that is fitted around the outer circumference of the split pipe segment to which it is located. The portion of the split pipe located on the side away from the large-diameter end of the limiting member forms a fitting section, and the maximum outer diameter of the fitting section is smaller than the maximum inner diameter of the split pipe.

2. The rockfall pipe structure for a submarine cable-laying vessel according to claim 1, characterized in that, The limiting component is a limiting ring, which is sleeved on the outer periphery of the split tube.

3. The rockfall pipe structure for a submarine cable-laying vessel according to claim 1, characterized in that, The limiting member and at least one of the split tubes in which it is located are provided with an elastic element so that when two adjacent split tubes are sleeved together, the limiting member and the split tube sleeved on the outer periphery of the split tube segment in which it is located can make elastic contact.

4. The rockfall pipe structure for a submarine cable-laying vessel according to claim 3, characterized in that, The elastic element is disposed on the side of the limiting element near the small-diameter end of the split tube.

5. The rockfall pipe structure for a submarine cable-laying vessel according to any one of claims 1-4, characterized in that, The difference between the maximum inner diameter of the split tube and the maximum outer diameter of the sleeve-fitting section is 5-10 mm.

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