A cable-laying vessel with dual cables entering and exiting at the same time

Abstract

The utility model discloses a cable-laying ship with two cables entering and exiting at the same time, comprising a hull, wherein the hull is provided with an upper deck cable pool and an under-deck cable pool, the hull is provided with a main crane, two main cranes are provided, the two main cranes are relatively distributed on both sides of the hull, the under-deck cable pool is placed between the two main cranes, one side of the upper deck cable pool is provided with an A back-twist frame, one side of the under-deck cable pool is provided with a B back-twist frame, a laying plough, an A-shaped support frame and a rooting assembly are provided on the stern side of the hull, the laying plough is connected to the A-shaped support frame by a rope, the A-shaped support frame is detachably connected to the rooting assembly, and the laying plough and the A-shaped support frame are both provided with two sets. The utility model can realize the laying of two submarine cables at the same time, with high construction efficiency, and can flexibly cope with different submarine cable spacing requirements by adjusting the rooting base of the A-shaped support frame.

Description

Technical Field

[0001] The utility model relates to a double-cable simultaneous-entry-and-exit cable-laying ship, belonging to the technical field of offshore wind power. Background Art

[0002] In the field of offshore wind power, offshore cable-laying vessels are one of the common equipment. Conventional offshore cable-laying vessels (such as offshore wind power cable-laying vessels) are mostly equipped with a cable-laying system on the ship deck, including a cable pool, a back-twist frame, a cable-laying machine, an A-frame, a laying plow, etc. The main steps in the laying of submarine cables are: the submarine cable factory connects the cable and places the submarine cable in the cable pool - submarine cable transportation - arrives at the designated sea area - the cable-laying vessel drops anchor - the submarine cable head is passed through the back-twist frame, cable-laying machine, and laying plow by the crane - the A-frame is lowered to lay the laying plow - the anchor is moved to move the ship, the cable-laying machine lays the cable, and the electric turntable rotates to lay the cable - the laying of the submarine cable is completed.

[0003] Conventional submarine cable laying vessels can only lay a single submarine cable at a time, while two landing cables are usually set up as backup. Conventional submarine cable vessels need to lay the landing cable back and forth twice, which results in, first, low work efficiency; second, it is difficult to control the distance between the two submarine cables; third, there is a risk of dragging anchor and damaging the laid submarine cable during the second cable laying. Usually, the smaller the scope of the requisitioned sea area, the better. Keeping the distance between the two submarine cables at the prescribed minimum distance (usually about 20m) can effectively reduce the area of ​​sea use. It is difficult to make the two submarine cables completely parallel and with the same distance through conventional submarine cable ship GPS positioning. Utility Model Content

[0004] The utility model aims to provide a dual-cable simultaneous entry and exit cable-laying vessel, which can realize the simultaneous laying of two submarine cables with high construction efficiency. By adjusting the rooting base of the A-shaped support frame, different submarine cable spacing requirements can be flexibly responded to.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a double-cable simultaneous entry and exit cable-laying vessel, comprising a hull, wherein the hull is provided with an upper deck cable pool and an under-deck cable pool, the hull is provided with a main crane, two main cranes are provided, the two main cranes are relatively distributed on both sides of the hull, the under-deck cable pool is placed between the two main cranes, an A back-twist frame is provided on one side of the upper deck cable pool, a B back-twist frame is provided on one side of the under-deck cable pool, a laying plow, an A-shaped support frame and a rooting assembly are provided on the stern side of the hull, the laying plow is connected to the A-shaped support frame by a rope, the A-shaped support frame is detachably connected to the rooting assembly, and two sets of the laying plow and the A-shaped support frame are provided; it can realize the simultaneous laying of two submarine cables, the construction efficiency is high, and by adjusting the rooting base of the A-shaped support frame, it can flexibly cope with different submarine cable spacing requirements.

[0006] The aforementioned dual-cable simultaneous entry and exit cable-laying vessel, wherein the cable pool on the deck is located close to the bow side of the hull, and the cable pool under the deck is located close to the stern side of the hull; a sufficiently large deck layout space is reserved for cranes, back-torsion frames, etc., and a cable outlet hole is reserved at the entry and exit deck of the lower cable pool to facilitate the entry and exit of the submarine cable in the lower cable pool.

[0007] In the aforementioned dual-cable simultaneous entry and exit cable-laying vessel, the height of the A back-twist frame protruding from the hull deck is higher than the height of the B back-twist frame protruding from the hull deck, and arc-shaped transition sections are arranged at both ends of the A back-twist frame; the A back-twist frame matched with the cable pool on the deck is arranged higher, and arc-shaped transition sections are arranged at both ends to facilitate the smooth entry and exit of the submarine cable; the B back-twist frame of the cable pool under the deck is arranged lower, and since the end of the back-twist frame is close to the cable laying machine, no arc transition section is arranged.

[0008] The aforementioned dual-cable simultaneous entry and exit cable-laying vessel has multiple groups of rooting components, which are fixedly arranged at intervals in the same straight line on the stern side of the hull; to adapt to different spacing requirements between two submarine cables, the rooting base is welded on-site according to the submarine cable spacing requirements, and an A-shaped support frame is installed.

[0009] The aforementioned dual-cable simultaneous entry and exit cable-laying vessel, the rooting component is slidably arranged on the stern side of the hull through a slide rail, and a locking device and a driving device are arranged on the rooting component; an A-shaped support frame is adapted to different spacing requirements between the two submarine cables through sliding.

[0010] The aforementioned dual-cable simultaneous entry and exit cable-laying vessel, the hull is also provided with an anchor windlass and a cable laying machine, the anchor windlass is connected to the A-shaped support frame by ropes, and two sets of cable laying machines are provided, one set of cable laying machines is placed on the same center line with the A back-twist frame, and the other set of cable laying machines is placed on the same center line with the B back-twist frame.

[0011] The aforementioned dual-cable simultaneous entry and exit cable-laying vessel, the hull is also provided with a control system, the control system is electrically connected to the electric tray of the cable pool on the deck, the control system is electrically connected to the electric tray of the cable pool under the deck, the control system is electrically connected to the main crane, the control system is electrically connected to the A back-twist frame, the control system is electrically connected to the B back-twist frame, the control system is electrically connected to the rooting component, the control system is electrically connected to the anchor machine, and the control system is electrically connected to the cable laying machine.

[0012] In the aforementioned dual-cable simultaneous entry and exit cable-laying vessel, an angle is provided between the center line of the A-shaped support frame and the hull deck, and the angle is an obtuse angle.

[0013] Compared with the prior art, the utility model is beneficial in that:

[0014] 1. The utility model can realize the simultaneous laying of two submarine cables, and the construction efficiency is high.

[0015] 2. The utility model can accurately control the distance between two submarine cables and reduce the sea area used.

[0016] 3. The utility model can flexibly cope with different submarine cable spacing requirements by adjusting the rooting base of the A-shaped support frame.

[0017] 4. In the case where only one submarine cable needs to be laid, the utility model can activate only one cable laying system. After laying the submarine cable in one cable pool, the submarine cable in another cable pool can be laid. The two cable pools can carry more submarine cables, reducing the number of cable connection times in the submarine cable factory.

[0018] 5. The utility model has a high degree of automation and strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the utility model;

[0020] Figure 2 It is the front view of the utility model;

[0021] Figure 3 It is a working schematic diagram of the utility model.

[0022] Figure numerals: 1-hull, 2-cable pool on deck, 3-cable pool under deck, 4-main crane, 5-A back-twist frame, 6-B back-twist frame, 7-laying plow, 8-A-shaped support frame, 9-rooting assembly, 10-anchor windlass, 11-cable laying machine.

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. DETAILED DESCRIPTION

[0024] Embodiment 1 of the utility model: A cable-laying vessel with two cables entering and exiting at the same time, comprising a hull 1, wherein the hull 1 is provided with an upper deck cable pool 2 and a lower deck cable pool 3, a main crane 4 is provided on the hull 1, and two main cranes 4 are provided, and the two main cranes 4 are relatively distributed on both sides of the hull 1, and the lower deck cable pool 3 is placed between the two main cranes 4, an A back-twist frame 5 is provided on one side of the upper deck cable pool 2, and a B back-twist frame 6 is provided on one side of the lower deck cable pool 3, a laying plow 7, an A-shaped support frame 8 and a rooting assembly 9 are provided on the stern side of the hull 1, the laying plow 7 is connected to the A-shaped support frame 8 by a rope, the A-shaped support frame 8 and the rooting assembly 9 are detachably connected, and the laying plow 7 and the A-shaped support frame 8 are both provided with two sets.

[0025] Embodiment 2 of the utility model: A cable-laying vessel with two cables entering and exiting at the same time, comprising a hull 1, wherein the hull 1 is provided with an upper deck cable pool 2 and a lower deck cable pool 3, a main crane 4 is provided on the hull 1, and two main cranes 4 are provided, and the two main cranes 4 are relatively distributed on both sides of the hull 1, and the lower deck cable pool 3 is placed between the two main cranes 4, an A back-twist frame 5 is provided on one side of the upper deck cable pool 2, and a B back-twist frame 6 is provided on one side of the lower deck cable pool 3, a laying plow 7, an A-shaped support frame 8 and a rooting component 9 are provided on the stern side of the hull 1, the laying plow 7 and the A-shaped support frame 8 are connected to the A-shaped support frame 8 by ropes, and the A-shaped support frame 8 and the rooting component 9 are detachably connected, and two sets of the laying plow 7 and the A-shaped support frame 8 are provided; the upper deck cable pool 2 is placed near the bow side of the hull 1, and the lower deck cable pool 3 is placed near the stern side of the hull 1.

[0026] Embodiment 3 of the utility model: A double-cable co-entry and co-exit cable-laying vessel, comprising a hull 1, wherein the hull 1 is provided with an on-deck cable pool 2 and a under-deck cable pool 3, a main crane 4 is provided on the hull 1, wherein two main cranes 4 are provided, and the two main cranes 4 are relatively distributed on both sides of the hull 1, and the under-deck cable pool 3 is placed between the two main cranes 4, an A back-twist frame 5 is provided on one side of the on-deck cable pool 2, a B back-twist frame 6 is provided on one side of the under-deck cable pool 3, and a laying plow is provided on the stern side of the hull 1 7. A-shaped support frame 8 and rooting assembly 9, the laying plow 7 is connected to the A-shaped support frame 8 by a rope, the A-shaped support frame 8 and the rooting assembly 9 are detachably connected, and two sets of the laying plow 7 and the A-shaped support frame 8 are provided; the cable pool 2 on the deck is placed close to the bow side of the hull 1, and the cable pool 3 under the deck is placed close to the stern side of the hull 1; the height of the A back-twist frame 5 protruding from the deck of the hull 1 is higher than the height of the B back-twist frame 6 protruding from the deck of the hull 1, and arc-shaped transition sections are provided at both ends of the A back-twist frame 5.

[0027] Embodiment 4 of the utility model: A double-cable simultaneous entry and exit cable-laying vessel, comprising a hull 1, wherein the hull 1 is provided with an upper deck cable pool 2 and an under-deck cable pool 3, a main crane 4 is provided on the hull 1, wherein two main cranes 4 are provided, and the two main cranes 4 are relatively distributed on both sides of the hull 1, and the under-deck cable pool 3 is placed between the two main cranes 4, an A back-twist frame 5 is provided on one side of the upper deck cable pool 2, and a B back-twist frame 6 is provided on one side of the under-deck cable pool 3, a laying plow 7, an A-shaped support frame 8 and a rooting assembly 9 are provided on the stern side of the hull 1, and the laying plow 7 It is connected to the A-shaped support frame 8 by a rope, and the A-shaped support frame 8 is detachably connected to the rooting component 9. Two sets of laying plows 7 and A-shaped support frames 8 are provided; the cable pool 2 on the deck is placed near the bow side of the hull 1, and the cable pool 3 under the deck is placed near the stern side of the hull 1; the height of the A back-twist frame 5 protruding from the deck of the hull 1 is higher than the height of the B back-twist frame 6 protruding from the deck of the hull 1, and arc-shaped transition sections are provided at both ends of the A back-twist frame 5; the rooting component 9 is provided in multiple groups, and the multiple groups of rooting components 9 are fixedly arranged at intervals on the same straight line on the stern side of the hull 1.

[0028] Embodiment 5 of the utility model: A double-cable simultaneous entry and exit cable-laying vessel, comprising a hull 1, wherein the hull 1 is provided with an upper deck cable pool 2 and an under-deck cable pool 3, a main crane 4 is provided on the hull 1, wherein two main cranes 4 are provided, and the two main cranes 4 are relatively distributed on both sides of the hull 1, and the under-deck cable pool 3 is placed between the two main cranes 4, an A back-twist frame 5 is provided on one side of the upper deck cable pool 2, and a B back-twist frame 6 is provided on one side of the under-deck cable pool 3, a laying plow 7, an A-shaped support frame 8 and a rooting assembly 9 are provided on the stern side of the hull 1, and the laying plow 7 It is connected to the A-shaped support frame 8 by a rope, and the A-shaped support frame 8 is detachably connected to the rooting component 9. Two sets of laying plows 7 and A-shaped support frames 8 are provided; the cable pool 2 on the deck is placed near the bow side of the hull 1, and the cable pool 3 under the deck is placed near the stern side of the hull 1; the height of the A back-twist frame 5 protruding from the deck of the hull 1 is higher than the height of the B back-twist frame 6 protruding from the deck of the hull 1, and arc-shaped transition sections are provided at both ends of the A back-twist frame 5; the rooting component 9 is provided in multiple groups, and the multiple groups of rooting components 9 are fixedly arranged at intervals on the same straight line on the stern side of the hull 1.

[0029] Embodiment 6 of the present utility model: A cable-laying vessel with two cables entering and exiting at the same time, comprising a hull 1, wherein the hull 1 is provided with an upper deck cable pool 2 and an under-deck cable pool 3, a main crane 4 is provided on the hull 1, and two main cranes 4 are provided, and the two main cranes 4 are relatively distributed on both sides of the hull 1, and the under-deck cable pool 3 is placed between the two main cranes 4, an A back-twist frame 5 is provided on one side of the upper deck cable pool 2, and a B back-twist frame 6 is provided on one side of the under-deck cable pool 3, a laying plow 7, an A-shaped support frame 8 and a rooting component 9 are provided on the stern side of the hull 1, the laying plow 7 and the A-shaped support frame 8 are connected by ropes, the A-shaped support frame 8 and the rooting component 9 are detachably connected, and the laying plow 7 and the A-shaped support frame 8 are both provided with Two sets; the cable pool 2 on the deck is placed near the bow side of the hull 1, and the cable pool 3 under the deck is placed near the stern side of the hull 1; the height of the A back-twist frame 5 protruding from the deck of the hull 1 is higher than the height of the B back-twist frame 6 protruding from the deck of the hull 1, and arc-shaped transition sections are arranged at both ends of the A back-twist frame 5; the rooting component 9 is slidably arranged on the stern side of the hull 1 through a slide rail, and a locking device and a driving device are arranged on the rooting component 9; an anchor windlass 10 and a cable laying machine 11 are also arranged on the hull 1, and the anchor windlass 10 is connected to the A-shaped support frame 8 by a rope, and two sets of cable laying machines 11 are arranged, one set of cable laying machines 11 and the A back-twist frame 5 are placed on the same center line, and the other set of cable laying machines 11 and the B back-twist frame 6 are placed on the same center line.

[0030] Embodiment 7 of the utility model: A double-cable co-entry and co-exit cable-laying vessel, comprising a hull 1, wherein the hull 1 is provided with an upper deck cable pool 2 and an under-deck cable pool 3, a main crane 4 is provided on the hull 1, wherein two main cranes 4 are provided, and the two main cranes 4 are relatively distributed on both sides of the hull 1, and the under-deck cable pool 3 is placed between the two main cranes 4, an A back-twist frame 5 is provided on one side of the upper deck cable pool 2, and a B back-twist frame 6 is provided on one side of the under-deck cable pool 3, and the vessel The stern side of the hull 1 is provided with a laying plow 7, an A-shaped support frame 8 and a rooting assembly 9, the laying plow 7 is connected to the A-shaped support frame 8 by a rope, the A-shaped support frame 8 is detachably connected to the rooting assembly 9, and two sets of laying plows 7 and A-shaped support frames 8 are provided; the cable pool 2 on the deck is placed near the bow side of the hull 1, and the cable pool 3 under the deck is placed near the stern side of the hull 1; the height of the A backtwist frame 5 protruding from the deck of the hull 1 is higher than that of the B backtwist frame 6 protruding from the deck of the hull 1 The height of the A back-twist frame 5 is set at both ends of the circular arc transition section; the rooting assembly 9 is provided with multiple groups, and the multiple groups of the rooting assemblies 9 are fixedly arranged on the stern side of the hull 1 at intervals in the same straight line; the hull 1 is also provided with an anchor windlass 10 and a cable laying machine 11, the anchor windlass 10 is connected to the A-shaped support frame 8 by a rope, and two sets of cable laying machines 11 are provided, one set of cable laying machines 11 and the A back-twist frame 5 are placed on the same center line, and the other set of cable laying machines 11 and the B back-twist frame 6 are placed on the same center line; the hull 1 is also provided with a control system, the control system is electrically connected to the electric tray of the cable pool 2 on the deck, the control system is electrically connected to the electric tray of the cable pool 3 under the deck, the control system is electrically connected to the main crane 4, the control system is electrically connected to the A back-twist frame 5, the control system is electrically connected to the B back-twist frame 6, the control system is electrically connected to the rooting assembly 9, the control system is electrically connected to the anchor windlass 10, and the control system is electrically connected to the cable laying machine 11.

[0031] Embodiment 8 of the utility model: A double-cable co-entry and co-exit cable-laying vessel, comprising a hull 1, wherein the hull 1 is provided with an upper deck cable pool 2 and an under-deck cable pool 3, a main crane 4 is provided on the hull 1, wherein two main cranes 4 are provided, and the two main cranes 4 are relatively distributed on both sides of the hull 1, and the under-deck cable pool 3 is placed between the two main cranes 4, an A back-twist frame 5 is provided on one side of the upper deck cable pool 2, a B back-twist frame 6 is provided on one side of the under-deck cable pool 3, and a laying frame is provided on the stern side of the hull 1 A plow 7, an A-shaped support frame 8 and a rooting assembly 9 are provided. The laying plow 7 is connected to the A-shaped support frame 8 by a rope. The A-shaped support frame 8 is detachably connected to the rooting assembly 9. The laying plow 7 and the A-shaped support frame 8 are both provided with two sets; the cable pool 2 on the deck is placed near the bow side of the hull 1, and the cable pool 3 under the deck is placed near the stern side of the hull 1; the height of the A back-twist frame 5 protruding from the deck of the hull 1 is higher than the height of the B back-twist frame 6 protruding from the deck of the hull 1, and arc-shaped brackets are provided at both ends of the A back-twist frame 5. Transition section; the rooting component 9 is slidably arranged on the stern side of the hull 1 through a slide rail, and the rooting component 9 is provided with a locking device and a driving device; the hull 1 is also provided with an anchor windlass 10 and a cable laying machine 11, the anchor windlass 10 is connected to the A-shaped support frame 8 by a rope, and two sets of cable laying machines 11 are provided, one set of cable laying machines 11 and the A back-twist frame 5 are placed on the same center line, and the other set of cable laying machines 11 and the B back-twist frame 6 are placed on the same center line; the hull 1 is also provided with a control system, the control system is electrically connected to the electric tray of the cable pool 2 on the deck, the control system is electrically connected to the electric tray of the cable pool 3 under the deck, the control system is electrically connected to the main crane 4, the control system is electrically connected to the A back-twist frame 5, the control system is electrically connected to the B back-twist frame 6, the control system is electrically connected to the rooting component 9, the control system is electrically connected to the anchor windlass 10, and the control system is electrically connected to the cable laying machine 11; an angle is set between the center line of the A-shaped support frame 8 and the deck of the hull 1, and the angle is an obtuse angle.

[0032] Embodiment 9 of the utility model: A double-cable co-entry and co-exit cable-laying vessel, comprising a hull 1, wherein the hull 1 is provided with an upper deck cable pool 2 and an under-deck cable pool 3, a main crane 4 is provided on the hull 1, wherein two main cranes 4 are provided, and the two main cranes 4 are relatively distributed on both sides of the hull 1, and the under-deck cable pool 3 is placed between the two main cranes 4, an A back-twist frame 5 is provided on one side of the upper deck cable pool 2, a B back-twist frame 6 is provided on one side of the under-deck cable pool 3, and a laying plow 7 and an A-shaped support frame are provided on the stern side of the hull 1 8 and rooting components 9, the laying plow 7 is connected to the A-shaped support frame 8 by a rope, the A-shaped support frame 8 is detachably connected to the rooting component 9, and two sets of the laying plow 7 and the A-shaped support frame 8 are provided; the cable pool 2 on the deck is placed near the bow side of the hull 1, and the cable pool 3 under the deck is placed near the stern side of the hull 1; the height of the A backtwist frame 5 protruding from the deck of the hull 1 is higher than the height of the B backtwist frame 6 protruding from the deck of the hull 1, and arc-shaped transition sections are provided at both ends of the A backtwist frame 5; the rooting component 9 is provided with 6 groups, and the 6 groups The rooting components 9 are fixedly arranged at intervals in the same straight line on the stern side of the hull 1. The rooting components 9 are connected to the deck by welding, and the interval between two rooting components in the same group is 12-15m; the hull 1 is also provided with an anchor windlass 10 and a cable laying machine 11, the anchor windlass 10 is connected to the A-shaped support frame 8 by ropes, and two sets of cable laying machines 11 are provided, one set of cable laying machines 11 is placed on the same center line with the A back-twist frame 5, and the other set of cable laying machines 11 is placed on the same center line with the B back-twist frame 6; the hull 1 is also provided with a control system, The control system is electrically connected to the electric tray of the cable pool 2 on the deck, the control system is electrically connected to the electric tray of the cable pool 3 under the deck, the control system is electrically connected to the main crane 4, the control system is electrically connected to the A back-twist frame 5, the control system is electrically connected to the B back-twist frame 6, the control system is electrically connected to the rooting component 9, the control system is electrically connected to the anchor machine 10, and the control system is electrically connected to the cable laying machine 11; an angle is set between the center line of the A-shaped support frame 8 and the deck of the hull 1, and the angle is an obtuse angle, which is 120°.

[0033] Embodiment 10 of the utility model: A double-cable simultaneous entry and exit cable laying vessel, comprising a hull 1, wherein the hull 1 is provided with an upper deck cable pool 2 and an under-deck cable pool 3, a main crane 4 is provided on the hull 1, wherein two main cranes 4 are provided, and the two main cranes 4 are relatively distributed on both sides of the hull 1, and the under-deck cable pool 3 is placed between the two main cranes 4, an A back-twist frame 5 is provided on one side of the upper deck cable pool 2, and a B back-twist frame 6 is provided on one side of the under-deck cable pool 3, and a laying plow 7 and an A-shaped support are provided on the stern side of the hull 1 The laying plow 7 is connected to the A-shaped support frame 8 by ropes, and the A-shaped support frame 8 is detachably connected to the rooting component 9. The laying plow 7 and the A-shaped support frame 8 are both provided with two sets; the cable pool 2 on the deck is placed near the bow side of the hull 1, and the cable pool 3 under the deck is placed near the stern side of the hull 1; the height of the A backtwist frame 5 protruding from the deck of the hull 1 is higher than the height of the B backtwist frame 6 protruding from the deck of the hull 1, and arc-shaped transition sections are arranged at both ends of the A backtwist frame 5; the rooting component 9 is set by sliding on a slide rail On the stern side of the hull 1, a locking device and a driving device are arranged on the rooting assembly 9. By sliding, the distance between the center lines of the two sets of A-shaped support frames 8 is 16-20m; the hull 1 is also provided with an anchor windlass 10 and a cable laying machine 11. The anchor windlass 10 is connected to the A-shaped support frame 8 by a rope. There are two sets of cable laying machines 11, one of which is placed on the same center line as the A back-twist frame 5, and the other is placed on the same center line as the B back-twist frame 6; the hull 1 is also provided with a control system. The control system is electrically connected to the electric tray of the cable pool 2 on the deck, the control system is electrically connected to the electric tray of the cable pool 3 under the deck, the control system is electrically connected to the main crane 4, the control system is electrically connected to the A back-twist frame 5, the control system is electrically connected to the B back-twist frame 6, the control system is electrically connected to the rooting component 9, the control system is electrically connected to the anchor machine 10, and the control system is electrically connected to the cable laying machine 11; an angle is set between the center line of the A-shaped support frame 8 and the deck of the hull 1, and the angle is an obtuse angle, which is 125°.

[0034] The working principle of an embodiment of the utility model: when the utility model is working, first, the front and rear anchors are thrown, the anchoring distance in front of the ship is 500m, and the anchoring distance behind the ship is 50m. The control system controls the rooting component 9 to slide to the set position, so that the distance between the center lines of the two sets of A-shaped support frames 8 is 16m, and the control system controls the cable warehouse to release the cable. The two sets of submarine cables pass through their respective back-twist frames and cable laying machines at the same time, and pass through the laying plow. The A-frame is lowered, and the laying plow is placed on the mud surface. The bow anchor wire rope is twisted and the stern anchor wire rope is released, and the ship is moved forward. The laying plow is inserted into the seabed mud layer. At the same time, the cable warehouse, back-twist frame, and cable laying machine on the ship synchronously release the cable to bury the submarine cable below 3m from the seabed mud surface. When the anchor wire rope at the bow reaches the limit, the anchor is stopped, and the front and rear anchors of the ship are lifted by the anchor boat, and anchor is re-cast, and the next round of cable release and cable laying work is carried out. The above steps are repeated until the cable laying is completed.

Claims

1. A dual-cable simultaneous in-and-out cable-laying vessel, comprising a hull (1), characterized in that: The hull (1) is provided with an on-deck cable pool (2) and a below-deck cable pool (3); the hull (1) is provided with a main crane (4); two main cranes (4) are provided, and the two main cranes (4) are relatively distributed on both sides of the hull (1); the below-deck cable pool (3) is placed between the two main cranes (4); an A-detwist frame (5) is provided on one side of the on-deck cable pool (2); a B-detwist frame (6) is provided on one side of the below-deck cable pool (3); a laying plow (7), an A-shaped support frame (8) and a rooting assembly (9) are provided on the stern side of the hull (1); the laying plow (7) and the A-shaped support frame (8) are connected by ropes; the A-shaped support frame (8) and the rooting assembly (9) are detachably connected; and two sets of the laying plow (7) and the A-shaped support frame (8) are provided.

2. A dual-cable simultaneous in-and-out cable-laying vessel according to claim 1, characterized in that: The cable pool (2) on the deck is arranged close to the bow side of the hull (1), and the cable pool (3) under the deck is arranged close to the stern side of the hull (1).

3. A dual-cable simultaneous in-and-out cable-laying vessel according to claim 1, characterized in that: The height of the A detwist frame (5) protruding from the deck of the hull (1) is higher than the height of the B detwist frame (6) protruding from the deck of the hull (1), and arc-shaped transition sections are provided at both ends of the A detwist frame (5).

4. A dual-cable simultaneous in-and-out cable-laying vessel according to claim 1, characterized in that: The rooting components (9) are provided in a plurality of groups, and the plurality of groups of rooting components (9) are fixedly arranged at intervals in the same straight line on the stern side of the hull (1).

5. The dual-cable simultaneous in-and-out cable-laying vessel according to claim 1, characterized in that: The rooting component (9) is slidably arranged on the stern side of the hull (1) via a slide rail, and a locking device and a driving device are arranged on the rooting component (9).

6. A dual-cable simultaneous in-and-out cable-laying vessel according to claim 1, characterized in that: The hull (1) is also provided with an anchor windlass (10) and a cable laying machine (11). The anchor windlass (10) is connected to the A-shaped support frame (8) by ropes. Two sets of cable laying machines (11) are provided, one set of cable laying machines (11) is placed on the same center line as the A back-twist frame (5), and the other set of cable laying machines (11) is placed on the same center line as the B back-twist frame (6).

7. A dual-cable simultaneous in-and-out cable-laying vessel according to claim 1, characterized in that: The hull (1) is also provided with a control system, the control system is electrically connected to the electric tray of the cable pool (2) on the deck, the control system is electrically connected to the electric tray of the cable pool (3) under the deck, the control system is electrically connected to the main crane (4), the control system is electrically connected to the A back-twist frame (5), the control system is electrically connected to the B back-twist frame (6), the control system is electrically connected to the rooting component (9), the control system is electrically connected to the anchor machine (10), and the control system is electrically connected to the cable laying machine (11).

8. The dual-cable simultaneous in-and-out cable-laying vessel according to claim 1, characterized in that: An angle is provided between the center line of the A-shaped support frame (8) and the deck of the hull (1), and the angle is an obtuse angle.

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