A tension detector for the traction rope of a submarine cable laying machine and a submarine cable laying system

Abstract

This utility model discloses a tension detector for the traction rope of a submarine cable laying machine and a submarine cable laying system. The tension detector includes: a limiting housing with an installation cavity, an inlet, and an outlet; a roller assembly including a tension detection roller, a first guide roller, and a second guide roller, the centers of the tension detection roller, the first guide roller, and the second guide roller being triangularly distributed; a fixing rod with its first end connected to the limiting housing and its second end adapted to be fixed to a transport ship, so that the limiting housing is installed on the traction path of the traction rope on one side of the transport ship; one end of the traction rope is adapted to pass through the inlet into the installation cavity, pass over the bottom of the first guide roller, the top of the tension detection roller, and the bottom of the second guide roller, and then exit. A tension detector is installed on the side of the traction rope near the transport ship to detect the tension of the traction rope, allowing the laying personnel to adjust the laying process in time when the tension of the traction rope is too high, and preventing the traction rope from breaking due to excessive tension.

Description

Technical Field

[0001] This utility model relates to the field of submarine cable transportation, and further to a tension detector for the traction rope of a submarine cable laying machine and a submarine cable laying system. Background Technology

[0002] Submarine cables are cables wrapped in insulating material and laid on the seabed for telecommunications transmission. Submarine cables are divided into submarine communication cables and submarine power cables. Modern submarine cables use optical fibers as the material to transmit telephone and internet signals.

[0003] During the process of laying submarine cables on the seabed, a submarine cable laying machine is usually used. The submarine cable laying machine carries one end of the submarine cable to the seabed. A transport ship carrying the submarine cable reel on the sea surface is connected to the submarine cable laying machine on the seabed through a steel cable. When the transport ship on the sea surface moves, it pulls the submarine cable laying machine to move synchronously through the steel cable. At the same time, the submarine cable is released in an orderly manner and laid on the seabed by the submarine cable laying machine.

[0004] During the actual laying process, due to the complex seabed terrain, the burial depth of the submarine cable varies depending on the location of the cable-laying machine, and the tension on the wire rope also varies. Once the tension exceeds the maximum bearing capacity of the wire rope, it will break. Currently, during the submarine cable laying process, the laying personnel cannot judge the tension of the wire rope pulling the cable-laying machine, nor can they make corresponding adjustments when the tension of the wire rope is about to be overloaded. Utility Model Content

[0005] To address the aforementioned technical problems, the purpose of this utility model is to provide a tension detector for the traction rope of a submarine cable laying machine and a submarine cable laying system. A tension detector is installed on the side of the traction rope closest to the transport ship, which can detect the tension of the traction rope. This allows the laying personnel to adjust the laying process in a timely manner when the tension of the traction rope is too high, thus preventing the traction rope from breaking due to excessive tension.

[0006] To achieve the above objectives, the present invention aims to provide a tension detector for the traction rope of a submarine cable laying machine, comprising:

[0007] The limiting housing has a mounting cavity, and the two sides of the limiting housing near the bottom also have an inlet and an outlet communicating with the mounting cavity, respectively;

[0008] The roller assembly includes a tension detection roller, a first guide roller, and a second guide roller. The tension detection roller, the first guide roller, and the second guide roller are rotatably mounted in the mounting cavity. The first guide roller and the second guide roller are positioned at a predetermined distance from each other in the region near the bottom of the limiting housing. The tension detection roller is positioned in the region near the top of the limiting housing. The centers of the tension detection roller, the first guide roller, and the second guide roller are triangularly distributed, and the centerlines of the tension detection roller, the first guide roller, and the second guide roller are parallel to each other.

[0009] A fixing rod, the first end of which is connected to the limiting housing, and the second end of which is adapted to be fixed to the transport ship, so as to install the limiting housing on the traction path of the towing rope on one side of the transport ship;

[0010] One end of the traction rope is adapted to pass through the inlet into the mounting cavity, pass sequentially over the bottom of the first guide rod, the top of the tension detection rod, and the bottom of the second guide rod, and then exit through the outlet.

[0011] In some embodiments, the limiting housing includes a first limiting plate, a second limiting plate, and a plurality of fasteners;

[0012] The first limiting plate and the second limiting plate are spaced apart by a preset distance, and the mounting cavity is formed between the first limiting plate and the second limiting plate. A plurality of fasteners pass through the first limiting plate and the second limiting plate to fix the first limiting plate and the second limiting plate together.

[0013] In some embodiments, the outer peripheral surfaces of the tension detection rod, the first guide rod, and the second guide rod are all provided with receiving grooves for accommodating the traction rope, and at least a portion of the traction rope is adapted to be accommodated in the receiving grooves.

[0014] In some embodiments, the first end of the fixing rod is rotatably connected to the limiting housing, and the fixing rod and the limiting housing are capable of rotating relative to each other about a first axis, wherein the first axis is parallel to the axis of the tension detection rod.

[0015] In some embodiments, the fixed rod includes a rod body and a first rotating block, the first rotating block being mounted on one end of the rod body, and the first rotating block having a first shaft hole at a predetermined position;

[0016] The first limiting plate and the second limiting plate each have two corresponding first rotating holes at their preset positions. The first rotating block is disposed between the first limiting plate and the second limiting plate, and the first shaft hole corresponds to the two first rotating holes respectively.

[0017] The fixing rod further includes a first rotating shaft, which passes sequentially through the first rotating hole on the first limiting plate, the first shaft hole, and the first rotating hole on the second limiting plate.

[0018] In some embodiments, the tension detector for the traction rope of the submarine cable laying machine further includes a first limiting block and a second limiting block spaced apart in the mounting cavity, with a portion of the first rotating block located in the gap between the first limiting block and the second limiting block. The first limiting block and the second limiting block are respectively used to limit the rotation range of the first rotating block on both sides of the first rotating block.

[0019] In some embodiments, the rod body has a lug at one end where the first rotating block is mounted, the lug having an ear hole, and the end where the first rotating block is connected to the rod body has a second rotating hole, the first rotating hole corresponding to the ear hole;

[0020] The fixing rod further includes a second rotating shaft that passes through the ear hole and the second rotating hole, and the axis of the second rotating shaft is perpendicular to the axis of the first rotating shaft.

[0021] In some embodiments, the second end of the fixing rod is rotatably connected to the transport vessel;

[0022] The tension detector for the traction rope of the submarine cable laying machine further includes a telescopic rod, one end of which is rotatably connected to the transport vessel and the other end of which is rotatably connected to the fixed rod.

[0023] Controlling the extension and retraction of the telescopic rod can cause the fixed rod to rotate relative to the transport ship, thereby adjusting the position of the limiting housing relative to the transport ship.

[0024] In some embodiments, the telescopic rod is a hydraulic telescopic rod.

[0025] According to another aspect of this application, a submarine cable laying system is further provided, comprising:

[0026] A transport ship carrying submarine cables to be laid;

[0027] A submarine cable laying machine, wherein the free end of the submarine cable to be laid is adapted to pass through the submarine cable laying machine, and the submarine cable laying machine is adapted to lay the submarine cable to be laid on the seabed;

[0028] A tow rope, one end of which is connected to the transport vessel and the other end of which is connected to the submarine cable laying machine;

[0029] The tension detector for the traction rope of a submarine cable laying machine as described in any of the above claims is installed on the side of the traction rope near the transport vessel. One end of the traction rope is adapted to pass through the inlet into the mounting cavity, pass sequentially over the bottom of the first guide rod, the top of the tension detection rod, and the bottom of the second guide rod, and then exit through the exit and connect to the submarine cable laying machine. Attached Figure Description

[0030] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0031] Figure 1 This is a three-dimensional structural schematic diagram of a tension detector for a traction rope of a submarine cable laying machine, representing a preferred embodiment of the present invention.

[0032] Figure 2 This is a three-dimensional structural schematic diagram of a tension detector for a traction rope of a submarine cable laying machine, representing a preferred embodiment of the present invention.

[0033] Figure 3 This is an exploded structural diagram of a tension detector for a traction rope of a submarine cable laying machine, according to a preferred embodiment of the present invention.

[0034] Figure 4 This is a front view of the first limiting plate of the tension detector for the traction rope of a submarine cable laying machine, which is a preferred embodiment of the present invention.

[0035] Figure 5 This is a three-dimensional structural schematic diagram of a modified embodiment of the tension detector for the traction rope of a submarine cable laying machine, which is a preferred embodiment of the present invention. Detailed Implementation

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0037] To keep the drawings concise, each figure only schematically shows the parts relevant to the utility model, and these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0038] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0039] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] refer to Figures 1 to 5 This application provides a tension detector 100 for a traction rope of a submarine cable laying machine. The tension detector 100 includes a limiting housing 10, a roller assembly 20, and a fixing rod 30. The limiting housing 10 has a mounting cavity 11, and the two sides of the limiting housing 10 near the bottom respectively have an inlet 12 and an outlet 13 communicating with the mounting cavity. The roller assembly 20 includes a tension detection roller 21, a first guide roller 22, and a second guide roller 23. The tension detection roller 21, the first guide roller 22, and the second guide roller 23 are rotatably mounted in the mounting cavity 11. The first guide roller 22 and the second guide roller 23 are arranged at a predetermined distance near the bottom of the limiting housing 10, and the tension detection roller 21 is arranged near the top of the limiting housing 10. The centers of the tension detection roller 21, the first guide roller 22, and the second guide roller 23 are triangularly distributed, and the centerlines of the tension detection roller 21, the first guide roller 22, and the second guide roller 23 are parallel to each other. The first end 31 of the fixing rod 30 is connected to the limiting housing 10, and the second end 32 is adapted to be fixed to the transport ship so that the limiting housing 10 is installed on the traction path of the traction rope 300 on one side of the transport ship; one end of the traction rope 300 is adapted to pass through the inlet 12 into the mounting cavity 11, pass in sequence over the bottom of the first guide rod 22, the top of the tension detection rod 21 and the bottom of the second guide rod 23, and then leave through the exit 13.

[0042] The transport vessel carries a submarine cable to be laid. The free end of the submarine cable is adapted to pass through the cable laying machine, which is adapted to lay the cable on the seabed. One end of the traction rope 300 is connected to the transport vessel, and the other end is connected to the cable laying machine. The tension detector 100 is installed on the side of the traction rope 300 near the transport vessel. During the cable laying process, the cable laying machine is adapted to be placed on the seabed, and the transport vessel is adapted to carry the submarine cable to be laid and move the cable laying machine by pulling it with the traction rope 300. As the cable laying machine moves on the seabed, it can lay the cable to be laid on the seabed.

[0043] In this application, a tension detector 100 is provided on the side of the traction rope 300 near the transport ship, which can detect the tension of the traction rope 300, so that the laying personnel can adjust the laying process in time when the tension of the traction rope 300 is too large, and avoid the traction rope 300 from breaking due to excessive tension.

[0044] Preferably, the traction rope 300 is a steel wire rope. Preferably, the submarine cable laying machine includes a towed plough trencher. The submarine cable to be laid can be either a submarine electrical cable or a submarine optical cable.

[0045] Specifically, the main structure of the tension detection roller 21 is a cylindrical roller wheel made of high-rigidity alloy, with a strain gauge pressure sensor embedded inside, such as a dual-hole parallel beam sensor or a cantilever beam pressure sensor. The traction rope 300 wraps around the surface of the tension detection roller 21 at a preset angle, applying lateral pressure to the tension detection roller 21. The strain gauge pressure sensor can detect the magnitude of the lateral pressure on the tension detection roller 21, and the tension of the traction rope can be determined based on the lateral pressure.

[0046] In some embodiments, the tension of the traction rope 300 can also be determined by the "three-point bending method" principle, as follows: After the tension detection rod 21, the first guide rod 22, and the second guide rod 23 are installed in the limiting housing 10, the positions of the first guide rod 22, the second guide rod 22, and the third guide rod 23 correspond to each other. When the traction rope 300 passes through the mounting cavity 11, the displacement signal generated by the tension detection rod 21 pressing the traction rope 300 relative to the first guide rod 22 and the second guide rod 23 can be determined. The distance between the first guide rod 22 and the second guide rod 23 is also a fixed value. The pressing force of the traction rope 300 on the tension detection rod 21 when it contacts the tension detection rod 21 can be obtained based on the strain gauge pressure sensor. Based on the above data, the tension of the traction rope 300 can be determined.

[0047] refer to Figure 1 , Figure 2 as well as Figure 3 Specifically, the limiting housing 10 includes a first limiting plate 141, a second limiting plate 142, and a plurality of fasteners 143. The first limiting plate 141 and the second limiting plate 142 are spaced apart by a preset distance, and the mounting cavity 11 is formed between the first limiting plate 141 and the second limiting plate 142. The plurality of fasteners 143 pass through the first limiting plate 141 and the second limiting plate 142 to fix the first limiting plate 141 and the second limiting plate 142 together.

[0048] Preferably, the fastener 143 includes a screw 1431 and a nut (not shown in the figure). The screw 1431 passes through the first limiting plate 141 and the second limiting plate 142 and is connected to the nut to fix the first limiting plate 141 and the second limiting plate 142 to each other. Preferably, there are multiple fasteners 143, which are respectively disposed at different positions of the limiting housing 10 to fix the first limiting plate 141 and the second limiting plate 142 at different positions of the limiting housing 10.

[0049] Further, the limiting housing 10 further includes an abutment block 144 disposed between the first limiting plate 141 and the second limiting plate 142. One end of the abutment block 144 is mounted on the first limiting plate 141. When the first limiting plate 141 and the second limiting plate 142 are correspondingly spaced apart, the abutment block 144 abuts against the second limiting plate 142, such that the distance between the first limiting plate 141 and the second limiting plate 142 is not less than the thickness of the abutment block 144. Preferably, there are two or more abutment blocks 144, respectively disposed at different positions on the first limiting plate 141. In some embodiments, the abutment block 144 can also be disposed on the second limiting plate 142. Preferably, the thickness of the abutment block 144 is greater than the axial width of the tension detection rod 21, the first guide rod 22, and the second guide rod 23.

[0050] Preferably, the outer peripheral surfaces of the tension detection rod 21, the first guide rod 22, and the second guide rod 23 are all provided with receiving grooves 210 for accommodating the traction rope 300, and at least a portion of the traction rope 300 is adapted to be accommodated in the receiving grooves 210. The receiving grooves 210 can limit the position of the traction rope 300, preventing the position of the traction rope 300 from shifting relative to the tension detection rod 21, the first guide rod 22, and the second guide rod 23.

[0051] Furthermore, the first end 31 of the fixing rod 30 is rotatably connected to the limiting housing 10. The fixing rod 30 and the limiting housing 10 are capable of rotating relative to each other about a first axis, wherein the first axis is parallel to the axis of the tension detection rod 21. When the angle of the fixing rod 30 relative to the transport vessel remains unchanged, rotating the limiting housing 10 relative to the fixing rod 30 can change the state of the limiting housing 10 relative to the transport vessel, thereby adjusting the state of the limiting housing 10 relative to the traction rope 300.

[0052] refer to Figure 3 The fixing rod 30 includes a rod body 33 and a first rotating block 34. The first rotating block 34 is installed at one end of the rod body 33, and a first shaft hole 340 is provided at a preset position of the first rotating block 34. The first limiting plate 141 and the second limiting plate 142 each have two corresponding first rotating holes 140 at their preset positions. The first rotating block 34 is disposed between the first limiting plate 141 and the second limiting plate 142, and the first shaft hole 340 corresponds to each of the two first rotating holes 140. The fixing rod further includes a first rotating shaft 35, which passes sequentially through the first rotating hole 140 on the first limiting plate 141, the first shaft hole 340, and the first rotating hole 140 on the second limiting plate 142, thereby enabling the fixing rod 30 to be rotatably connected to the limiting housing 10.

[0053] refer to Figure 3 The tension detector 100 for the traction rope of the submarine cable laying machine further includes a first limiting block 151 and a second limiting block 152 spaced apart in the mounting cavity 11. A portion of the first rotating block 34 is located within the gap between the first limiting block 151 and the second limiting block 152. The first limiting block 151 and the second limiting block 152 are respectively used to limit the rotation range of the first rotating block 34 on both sides of the first rotating block 34. In some embodiments, the first limiting block 151 and the second limiting block 152 are respectively fixedly installed on one side of the first limiting plate 141 near the second limiting plate 142. In some embodiments, the first limiting block 151 and the second limiting block 152 are respectively fixedly installed on one side of the second limiting plate 142 near the first limiting plate 141. In some modified embodiments, the first limiting block 151 is fixedly installed on the first limiting plate 141, and the second limiting block 152 is fixedly installed on the second limiting plate 142.

[0054] refer to Figure 3Furthermore, the first rotating block 34 is rotatably mounted on the rod body 33. Specifically, one end of the rod body 33 where the first rotating block 34 is mounted is provided with a lug 331, the lug 331 having an ear hole 330, and the end of the first rotating block 34 connected to the rod body 33 having a second rotating hole 341, the first rotating hole 341 corresponding to the ear hole 331. The fixed rod 30 further includes a second rotating shaft 36, the second rotating shaft 36 passing through the ear hole 330 and the second rotating hole 341, and the axis of the second rotating shaft 361 is perpendicular to the axis of the first rotating shaft 35. That is, the axis of the second rotating shaft 36 is perpendicular to the axis of the tension detection rod 21, thereby allowing the limiting housing 10 to swing left and right relative to the transport ship with the traction rope 300. The limiting housing 10 can rotate relative to the first rotating block 34 around the first rotating shaft 35, allowing the limiting housing 10 to swing up and down relative to the transport ship with the traction rope 300.

[0055] refer to Figure 5 In some embodiments, the second end 32 of the fixed rod 30 is rotatably connected to the transport vessel. The tension detector 100 for the cable-laying machine's traction rope further includes a telescopic rod 40, one end of which is rotatably connected to the transport vessel, and the other end is rotatably connected to the fixed rod 30. Preferably, the telescopic rod 40 is connected to the fixed rod 30 at a predetermined position in the middle of the fixed rod 30. Controlling the extension and retraction of the telescopic rod 40 can cause the fixed rod 30 to rotate relative to the transport vessel, thereby adjusting the position of the limiting housing 10 relative to the transport vessel. The angle of the fixed rod 30 relative to the transport vessel can be adjusted by the telescopic rod 40, thereby adjusting the angle of the limiting housing 10 relative to the transport vessel.

[0056] Preferably, the telescopic rod 40 is a hydraulic telescopic rod.

[0057] According to another aspect of this application, a submarine cable laying system is further provided, comprising: a transport ship, a submarine cable laying machine, a traction rope 300, and a tension detector 100 for the traction rope of the submarine cable laying machine as described in the above embodiments. The transport ship carries a submarine cable to be laid; the free end of the submarine cable to be laid is adapted to pass through the submarine cable laying machine, and the submarine cable laying machine is adapted to lay the submarine cable to be laid on the seabed; one end of the traction rope 300 is connected to the transport ship, and the other end is connected to the submarine cable laying machine; the tension detector 100 for the traction rope of the submarine cable laying machine is installed on the side of the traction rope 300 near the transport ship, and one end of the traction rope 300 is adapted to pass through the inlet 12 into the mounting cavity 11, sequentially passing over the bottom of the first guide rod 22, the top of the tension detection rod 21, and the bottom of the second guide rod 23, and then exiting through the outlet 13 and connecting to the submarine cable laying machine.

[0058] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A tension detector for the traction rope of a submarine cable laying machine, characterized in that, include: The limiting housing has a mounting cavity, and the two sides of the limiting housing near the bottom also have an inlet and an outlet communicating with the mounting cavity, respectively; The roller assembly includes a tension detection roller, a first guide roller, and a second guide roller. The tension detection roller, the first guide roller, and the second guide roller are rotatably mounted in the mounting cavity. The first guide roller and the second guide roller are positioned at a predetermined distance from each other in the region near the bottom of the limiting housing. The tension detection roller is positioned in the region near the top of the limiting housing. The centers of the tension detection roller, the first guide roller, and the second guide roller are triangularly distributed, and the centerlines of the tension detection roller, the first guide roller, and the second guide roller are parallel to each other. A fixing rod, the first end of which is connected to the limiting housing, and the second end of which is adapted to be fixed to the transport ship, so as to install the limiting housing on the traction path of the towing rope on one side of the transport ship; One end of the traction rope is adapted to pass through the inlet into the mounting cavity, pass sequentially over the bottom of the first guide rod, the top of the tension detection rod, and the bottom of the second guide rod, and then exit through the outlet.

2. The tension detector for the traction rope of a submarine cable laying machine according to claim 1, characterized in that, The limiting housing includes a first limiting plate, a second limiting plate, and several fasteners; The first limiting plate and the second limiting plate are spaced apart by a preset distance, and the mounting cavity is formed between the first limiting plate and the second limiting plate. A plurality of fasteners pass through the first limiting plate and the second limiting plate to fix the first limiting plate and the second limiting plate together.

3. The tension detector for the traction rope of a submarine cable laying machine according to claim 2, characterized in that, The outer peripheral surfaces of the tension detection rod, the first guide rod, and the second guide rod are all provided with receiving grooves for accommodating the traction rope, and at least a portion of the traction rope is adapted to be accommodated in the receiving grooves.

4. The tension detector for the traction rope of a submarine cable laying machine according to claim 3, characterized in that, The first end of the fixing rod is rotatably connected to the limiting housing, and the fixing rod and the limiting housing are able to rotate relative to each other about a first axis, wherein the first axis is parallel to the axis of the tension detection rod.

5. The tension detector for the traction rope of a submarine cable laying machine according to claim 4, characterized in that, The fixed rod includes a rod body and a first rotating block. The first rotating block is installed at one end of the rod body, and the first rotating block has a first shaft hole at a preset position. The first limiting plate and the second limiting plate each have two corresponding first rotating holes at their preset positions. The first rotating block is disposed between the first limiting plate and the second limiting plate, and the first shaft hole corresponds to the two first rotating holes respectively. The fixing rod further includes a first rotating shaft, which passes sequentially through the first rotating hole on the first limiting plate, the first shaft hole, and the first rotating hole on the second limiting plate.

6. The tension detector for the traction rope of a submarine cable laying machine according to claim 5, characterized in that, The tension detector for the traction rope of the submarine cable laying machine further includes a first limiting block and a second limiting block spaced apart in the mounting cavity. A portion of the first rotating block is located in the gap between the first limiting block and the second limiting block. The first limiting block and the second limiting block are respectively used to limit the rotation range of the first rotating block on both sides of the first rotating block.

7. The tension detector for the traction rope of a submarine cable laying machine according to claim 6, characterized in that, The rod body has a lug at one end where the first rotating block is mounted, and the lug has an ear hole. The end where the first rotating block is connected to the rod body has a second rotating hole, and the first rotating hole is correspondingly provided with the ear hole. The fixing rod further includes a second rotating shaft that passes through the ear hole and the second rotating hole, and the axis of the second rotating shaft is perpendicular to the axis of the first rotating shaft.

8. The tension detector for the traction rope of a submarine cable laying machine according to claim 7, characterized in that, The second end of the fixing rod is rotatably connected to the transport vessel; The tension detector for the traction rope of the submarine cable laying machine further includes a telescopic rod, one end of which is rotatably connected to the transport vessel and the other end of which is rotatably connected to the fixed rod. Controlling the extension and retraction of the telescopic rod can cause the fixed rod to rotate relative to the transport ship, thereby adjusting the position of the limiting housing relative to the transport ship.

9. The tension detector for the traction rope of a submarine cable laying machine according to claim 8, characterized in that, The telescopic rod is a hydraulic telescopic rod.

10. A submarine cable laying system, characterized in that, include: A transport ship carrying submarine cables to be laid; A submarine cable laying machine, wherein the free end of the submarine cable to be laid is adapted to pass through the submarine cable laying machine, and the submarine cable laying machine is adapted to lay the submarine cable to be laid on the seabed; A tow rope, one end of which is connected to the transport vessel and the other end of which is connected to the submarine cable laying machine; The tension detector for the traction rope of a submarine cable laying machine according to any one of claims 1 to 9, wherein the tension detector is installed on the side of the traction rope near the transport vessel, one end of the traction rope is adapted to pass through the inlet into the mounting cavity, pass sequentially over the bottom of the first guide rod, the top of the tension detection rod and the bottom of the second guide rod, and then exit through the exit and connect to the submarine cable laying machine.

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