Concentric double-cable turntable

Abstract

The invention provides a concentric double-cable rotating disc, and the rotating disc comprises an inner rotating disc which is internally provided with a first annular space for placing a cable; the first driving mechanism is used for being connected with the inner rotating disc so as to drive the inner rotating disc to rotate around the axis of the inner rotating disc; the outer rotating disc is arranged around the inner rotating disc, the central axis of the outer rotating disc coincides with the central axis of the inner rotating disc, and a second annular space used for placing a cable is formed in the outer rotating disc; the second driving mechanism is used for being connected with the outer rotating disc so as to drive the outer rotating disc to rotate around the axis of the outer rotating disc. According to the concentric double-cable rotating disc, the cable laying efficiency can be improved, and the requirement for the deck space of a cable laying ship is lowered.

Description

Technical Field

[0001] The invention relates to the technical field of cable-laying vessels, and in particular to a concentric double-cable turntable. Background Art

[0002] A cable-laying vessel is a special engineering vessel equipped with a cable cabin and cable-laying equipment, and is mainly used for laying submarine cables. At present, the cable turntables used by cable-laying vessels are all single cable turntables, that is, one cable turntable can only lay one cable, resulting in a single cable-laying function. Only cables of the same type can be laid at the same time, and the cable-laying efficiency is low. If two cables are to be laid at the same time, two powered cable turntables need to be installed on the deck of the cable-laying vessel. However, the deck area of ​​a cable-laying vessel is limited, and the installation of two cable turntables is not conducive to the layout of the deck space, and the deck space requirements of the cable-laying vessel are relatively high. Summary of the invention

[0003] In view of this, the present invention provides a concentric double cable turntable, which can improve the cable laying efficiency and reduce the requirement for the deck space of the cable laying vessel.

[0004] In order to solve at least one of the above technical problems, the present invention adopts the following technical solutions:

[0005] A concentric double-cable turntable according to an embodiment of the present invention comprises:

[0006] An inner rotating disk, wherein a first annular space for placing cables is provided in the inner rotating disk;

[0007] A first driving mechanism, the first driving mechanism is used to be connected to the inner rotating disk to drive the inner rotating disk to rotate around its axis;

[0008] An outer turntable, the outer turntable is arranged around the inner turntable, and the central axis of the outer turntable coincides with the central axis of the inner turntable, and a second annular space for placing cables is arranged in the outer turntable;

[0009] The second driving mechanism is used to connect with the outer turntable to drive the outer turntable to rotate around its axis.

[0010] In one embodiment of the present invention, the inner turntable comprises:

[0011] An inner fixed shaft, the inner fixed shaft is arranged along the vertical direction;

[0012] An inner base, the inner base is used to be arranged on the deck of the cable-laying vessel, and the lower end of the inner fixed shaft is fixedly connected to the inner base;

[0013] An inner cable carrier chassis, the inner cable carrier chassis is placed on the inner base, a first inner through hole for passing the inner fixed shaft is provided at the center of the inner cable carrier chassis in the vertical direction, the inner cable carrier chassis is rotatably connected with the inner fixed shaft through a first slewing mechanism, the inner cable carrier chassis and the inner fixed shaft are coaxial, and the first driving mechanism is used to drive the inner cable carrier chassis to rotate around the inner fixed shaft;

[0014] A first inner surrounding wall, which is arranged on the inner cable carrying chassis and surrounds the inner fixed axis;

[0015] The first peripheral wall is arranged on the inner cable carrier chassis and surrounds the first inner peripheral wall. The inner cable carrier chassis, the first peripheral wall and the first inner peripheral wall form a first annular space for placing cables.

[0016] In one embodiment of the present invention, a second inner through hole for the inner fixed shaft to pass through is provided at the center of the inner base in the vertical direction, the inner fixed shaft is connected to the deck of the cable-laying vessel, and the first slewing mechanism includes:

[0017] An inner rotating shaft, the inner rotating shaft is arranged in the first inner through hole along the vertical direction, the inner rotating shaft is connected to the inner cable carrier chassis through a plurality of first pins, and a third inner through hole for the inner fixed shaft to pass through is arranged on the inner rotating shaft along the vertical direction;

[0018] A slewing bearing, wherein the slewing bearing is arranged in the third inner through hole, the outer ring of the slewing bearing is connected to the inner wall of the third inner through hole, the inner ring of the slewing bearing is provided with a fourth inner through hole for allowing the inner fixed shaft to pass through, and the inner ring of the slewing bearing is connected to the inner fixed shaft.

[0019] In one embodiment of the present invention, a circle of first drive chain is wound around the outer side of the inner cable carrier chassis along its circumference, and the first drive mechanism includes:

[0020] a first drive motor;

[0021] The first driving gear is connected to the first driving motor, the first driving chain is meshed with the first driving gear, the first driving motor is used to drive the first driving gear to rotate, and the first driving gear cooperates with the first driving chain to drive the inner cable carrying chassis to rotate.

[0022] In one embodiment of the present invention, a first annular track is arranged on the inner base, the first annular track is coaxial with the inner cable carrying chassis, a plurality of inner track rollers are arranged on the first annular track at intervals along its circumferential direction, the inner cable carrying chassis is placed on each inner track roller, and the central axis of each inner track roller is consistent with the horizontal direction and intersects with the central axis of the inner fixed shaft.

[0023] In one embodiment of the present invention, the outer turntable comprises:

[0024] An outer annular fixing column, the outer annular fixing column is arranged along the vertical direction, a first outer through hole for the inner rotating disk to pass through is arranged at the center of the outer annular fixing column along the vertical direction, and the central axis of the outer annular fixing column coincides with the central axis of the inner rotating disk;

[0025] An outer base, the outer base is used to be arranged on the deck of the cable-laying vessel, and the outer base is arranged around the inner turntable, and the lower end of the outer annular fixing column is fixedly connected to the outer base;

[0026] An outer cable carrier chassis, the outer cable carrier chassis is placed on the outer base, and the outer cable carrier chassis is arranged around the outer annular fixing column, a second outer through hole for the outer annular fixing column to pass through is arranged at the center of the outer cable carrier chassis in the vertical direction, the outer cable carrier chassis is rotatably connected to the outer annular fixing column through a plurality of second rotating mechanisms, the outer cable carrier chassis and the outer annular fixing column are coaxial, and the second driving mechanism is used to drive the outer cable carrier chassis to rotate around the outer annular fixing column;

[0027] A second inner surrounding wall, which is arranged on the outer cable-carrying chassis and surrounds the outer annular fixing column;

[0028] The second peripheral wall is arranged on the outer cable-carrying chassis and surrounds the second inner peripheral wall. The outer cable-carrying chassis, the second peripheral wall and the second inner peripheral wall form a second annular space for placing cables.

[0029] In one embodiment of the present invention, a plurality of second rotating mechanisms are arranged at intervals on the inner side wall of the second outer through hole, and each second rotating mechanism comprises:

[0030] A support seat connected to the inner wall of the second outer through hole;

[0031] The swivel roller is arranged on the support seat, and the circumferential surface of the swivel roller is in contact with the outer wall of the outer annular fixing column, and the central axis of the swivel roller is parallel to the central axis of the outer cable carrier chassis.

[0032] In one embodiment of the present invention, a second drive chain is wound around the outer side of the outer cable carrier chassis along its circumference, and the second drive mechanism includes:

[0033] a second drive motor;

[0034] The second driving gear is connected to the second driving motor, the second driving chain is meshed with the second driving gear, the second driving motor is used to drive the second driving gear to rotate, and the second driving gear cooperates with the second driving chain to drive the outer cable carrying chassis to rotate.

[0035] In one embodiment of the present invention, a second annular track is arranged on the outer base, the second annular track is coaxial with the outer cable carrying chassis, a plurality of outer track rollers are arranged on the second annular track at intervals along its circumferential direction, the outer cable carrying chassis is placed on each of the outer track rollers, and the central axis of each outer track roller is consistent with the horizontal direction and intersects with the central axis of the outer annular fixing column.

[0036] In one embodiment of the present invention, the concentric double cable turntable further comprises:

[0037] The controller is electrically connected to the first driving mechanism and the second driving mechanism respectively, and is used to control the first driving mechanism to drive the inner rotating disk to rotate and control the second driving mechanism to drive the outer rotating disk to rotate.

[0038] The above technical solution of the present invention has at least one of the following beneficial effects:

[0039] The concentric double cable turntable of the present invention is provided with an outer turntable around the outer side of the inner turntable, and the inner turntable and the outer turntable are respectively driven to rotate by a first driving mechanism and a second driving mechanism. Since the inner turntable and the outer turntable can store cables of different types respectively, the inner turntable and the outer turntable can simultaneously lay two cables when rotating, thereby improving the cable laying efficiency. In addition, since the outer turntable is arranged around the inner turntable, the volume is reduced compared to two independent single cable turntables, and the deck space of the cable laying vessel can be effectively utilized. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of a concentric double cable turntable in one embodiment of the present invention;

[0041] Figure 2 It is a schematic structural diagram of an inner turntable and a first driving mechanism of a concentric double cable turntable in one embodiment of the present invention;

[0042] Figure 3 It is a cross-sectional structural schematic diagram of an inner turntable and a first driving mechanism of a concentric double cable turntable in one embodiment of the present invention;

[0043] Figure 4 It is a schematic structural diagram of an outer turntable of a concentric double cable turntable and a second driving mechanism in one embodiment of the present invention;

[0044] Figure 5 It is a schematic cross-sectional structural diagram of an outer turntable of a concentric double cable turntable and a second driving mechanism in one embodiment of the present invention.

[0045] Reference numerals:

[0046] 100, inner turntable; 110, inner fixed shaft; 120, inner base; 121, inner track roller; 130, inner cable carrier chassis; 131, inner rotating shaft; 132, first pin shaft; 133, slewing bearing; 134, first driving chain; 140, first inner surrounding wall; 150, first outer surrounding wall;

[0047] 200, first driving mechanism; 210, first driving motor; 220, first driving gear;

[0048] 300, outer turntable; 310, outer annular fixed column; 320, outer base; 321, outer track roller; 330, outer cable carrier chassis; 331, support seat; 332, rotary roller; 333, second drive chain; 340, second inner surrounding wall; 350, second outer peripheral wall;

[0049] 400, second driving mechanism; 410, second driving motor; 420, second driving gear. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0051] Firstly, a concentric double cable turntable according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0052] Figure 1 FIG. 1 shows a schematic diagram of the structure of a concentric double cable turntable provided by an embodiment of the present invention. Figure 1 As shown, the concentric double cable turntable of the embodiment of the present invention may include: an inner turntable 100, a first driving mechanism 200, an outer turntable 300 and a second driving mechanism 400. Among them, the inner turntable 100 is provided with a first annular space for placing cables; the first driving mechanism 200 is used to connect with the inner turntable 100 to drive the inner turntable 100 to rotate around its axis; the outer turntable 300 is arranged around the inner turntable 100, and the central axis (i.e., the axis) of the outer turntable 300 coincides with the central axis of the inner turntable 100, and the outer turntable 300 is provided with a second annular space for placing cables; the second driving mechanism 400 is used to connect with the outer turntable 300 to drive the outer turntable 300 to rotate around its axis.

[0053] In this embodiment, the first annular space in the inner turntable 100 and the second annular space in the outer turntable 300 arranged around the inner turntable 100 can both store cables, and two cables of the same model or different models can be stored in the first annular space and the second annular space respectively according to the operation requirements. At this time, the first driving mechanism 200 and the second driving mechanism 300 can be used to rotate the inner turntable 100 and the outer turntable 300 respectively, and the two cables in the first annular space and the second annular space can be pulled out and laid to the seabed in cooperation with the cable guide arm and the cable traction machine on the cable laying ship. Thus, the inner turntable 100 and the outer turntable 300 can store two cables respectively, so that the inner turntable 100 and the outer turntable 300 can lay two cables at the same time when rotating, thereby improving the cable laying efficiency. In addition, since the outer turntable 300 is arranged around the inner turntable 100, and the central axis of the outer turntable 300 coincides with the central axis of the inner turntable 100, compared with two independent single cable turntables, the volume is reduced, and the deck space of the cable laying ship can be effectively utilized.

[0054] Figure 2 FIG. 1 shows a schematic structural diagram of an inner turntable 100 and a first driving mechanism 200 of a concentric double cable turntable in one embodiment of the present invention. Figure 3 FIG. 2 shows a cross-sectional structural diagram of an inner turntable 100 and a first driving mechanism 200 of a concentric double cable turntable in one embodiment of the present invention. Figure 2 and Figure 3 As shown, the inner turntable 100 includes: an inner fixed shaft 110, an inner base 120, an inner cable carrier chassis 130, a first inner surrounding wall 140 and a first outer surrounding wall 150. The inner base 120 is used to be arranged on the deck of the cable-laying vessel, and the lower end of the inner fixed shaft 110 is fixedly connected to the inner base 120; the inner cable carrier chassis 130 is placed on the inner base 120, and the inner base 120 supports the bottom of the inner cable carrier chassis 130. A first inner through hole for the inner fixed shaft 110 to pass through is arranged at the center of the inner cable carrier chassis 130 in the vertical direction. The inner cable carrier chassis 130 is rotatably connected to the inner fixed shaft 110 through a first slewing mechanism. The inner cable carrier chassis 130 is rotatably connected to the inner fixed shaft 110 through a first slewing mechanism. The inner fixed shaft 110 is coaxial, and the first driving mechanism 200 is used to drive the inner cable carrying chassis 130 to rotate around the inner fixed shaft 110; the first inner surrounding wall 140 is arranged on the inner cable carrying chassis 130, and the first inner surrounding wall 140 is arranged around the inner fixed shaft 110; the first outer wall 150 is arranged on the inner cable carrying chassis 130, and the first outer wall 150 is arranged around the first inner surrounding wall 140, and the inner cable carrying chassis 130, the first outer wall 150 and the first inner surrounding wall 140 form a first annular space for placing cables.

[0055] In this embodiment, when pulling out the cable in the first annular space on the inner turntable 100, the first driving mechanism 200 can drive the inner cable carrying chassis 130 to rotate around the inner fixed axis 110 through the first rotating mechanism, thereby driving the first inner wall 140 and the first outer wall 150 on the inner cable carrying chassis 130 to rotate synchronously. At this time, the cables stored in the first annular space can be pulled out layer by layer from top to bottom, and laid to the seabed through other equipment on the cable-laying ship. When loading the cable, the construction personnel can connect one end of the cable to the first inner wall 140, and then the first driving mechanism 200 can drive the inner cable carrier chassis 130 to rotate in the opposite direction around the inner fixed shaft 110 through the first rotating mechanism, and the cable is wound around the inner wall of the first outer wall 150 circle by circle through the corresponding annular jig, and then wound around the outer wall of the first inner wall 140 circle by circle from the inner wall of the first outer wall 150, and so on until the cable is stored in the first annular space for placing the cable surrounded by the inner cable carrier chassis 130, the first outer wall 150 and the first inner wall 140. In this way, the cable can be efficiently and stably drawn out or loaded.

[0056] like Figure 2 and Figure 3 As shown, a second inner through hole for the inner fixed shaft 110 to pass through is provided at the center of the inner base 120 in the vertical direction, and the inner fixed shaft 110 is connected to the deck of the cable-laying vessel, and the first slewing mechanism includes: an inner rotating shaft 131 and a slewing bearing 133. Among them, the inner rotating shaft 131 is provided in the first inner through hole in the vertical direction, and the inner rotating shaft 131 is connected to the inner cable-carrying chassis 130 through a plurality of first pins 132, and a third inner through hole for the inner fixed shaft 110 to pass through is provided on the inner rotating shaft 131 in the vertical direction; the slewing bearing 133 is provided in the third inner through hole, and the outer ring of the slewing bearing 133 is connected to the inner side wall of the third inner through hole, and the inner ring of the slewing bearing 133 is provided with a fourth inner through hole for the inner fixed shaft 110 to pass through, and the inner ring of the slewing bearing 133 is connected to the inner fixed shaft 110. Thus, the inner cable carrying chassis 130 can rotate around the inner fixed shaft 110 .

[0057] like Figure 2 and Figure 3As shown, a circle of the first drive chain 134 is wound around the outer side of the inner cable carrier chassis 130 along its circumference, and the first drive mechanism 200 includes: a first drive motor 210 and a first drive gear 220. Among them, the first drive gear 220 is connected to the first drive motor 210, and the first drive chain 134 is meshed with the first drive gear 220. The first drive motor 210 is used to drive the first drive gear 220 to rotate, and the first drive gear 220 cooperates with the first drive chain 134 to drive the inner cable carrier chassis 130 to rotate around the inner fixed shaft 110. When the first drive gear 220 and the first drive chain 134 are meshed with each other, they can rotate smoothly and continuously. At the same time, since the first drive chain 134 is always controlled by the first drive gear 220 during movement, the rotation accuracy of the inner cable carrier chassis 130 can be effectively improved. Therefore, the first drive mechanism 200 can accurately control the rotation speed of the inner turntable 100. In some other embodiments of the present invention, the first driving mechanism 200 can control the rotation speed of the inner turntable 100 to match the rotation speed of the outer turntable 300, so that when pulling the cables in the first annular space and the second annular space, the pulling speeds of the two cables are the same. Thus, the two cables in the first annular space and the second annular space can be laid synchronously, thereby further improving the cable laying efficiency.

[0058] like Figure 2 and Figure 3 As shown, a first annular track is arranged on the inner base 120, and the first annular track is coaxial with the inner cable carrying chassis 130. A plurality of inner track rollers 121 are arranged on the first annular track at intervals along its circumferential direction. The inner cable carrying chassis 130 is placed on each inner track roller 121, and the central axis of each inner track roller 121 is consistent with the horizontal direction and intersects with the central axis of the inner fixed shaft 110.

[0059] In this embodiment, a plurality of inner track rollers 121 whose central axes are consistent with the horizontal direction and intersecting with the central axis of the inner fixed shaft 110 are arranged on the first annular track, and each inner track roller 121 supports the lower surface of the inner cable carrying chassis 130. When the inner cable carrying chassis 130 rotates around the inner fixed shaft 110, each inner track roller 121 can rotate, which can effectively reduce friction and improve the continuity of the inner cable carrying chassis 130 during rotation.

[0060] Figure 4 FIG. 1 is a schematic structural diagram of an outer turntable 300 of a concentric double cable turntable and a second driving mechanism 400 in one embodiment of the present invention. Figure 5 FIG. 4 shows a cross-sectional structural diagram of an outer turntable 300 and a second driving mechanism 400 of a concentric double cable turntable in one embodiment of the present invention. Figure 4 and Figure 5As shown, the outer turntable 300 includes: an outer annular fixing column 310, an outer base 320, an outer cable carrier chassis 330, a second inner surrounding wall 340 and a second outer peripheral wall 350. The outer annular fixing column 310 is arranged along the vertical direction, and a first outer through hole for the inner turntable 100 to pass through is arranged at the center of the outer annular fixing column 310 along the vertical direction, and the central axis of the outer annular fixing column 310 coincides with the central axis of the inner turntable 100; the outer base 320 is used to be arranged on the deck of the cable-laying vessel, and the outer base 320 is arranged around the outer annular fixing column 310, and the lower end of the outer annular fixing column 310 is fixedly connected to the outer base 320; the outer cable carrier chassis 330 is placed on the outer base 320, and the outer base 320 supports the bottom of the outer cable carrier chassis 330, and the outer cable carrier chassis 330 is arranged around the inner turntable 100, and the center of the outer cable carrier chassis 330 is arranged along the vertical direction. A second outer through hole is provided in the direction for the outer annular fixing column 310 to pass through, the outer cable carrying chassis 330 is rotatably connected to the outer annular fixing column 310 through a plurality of second rotating mechanisms, the outer cable carrying chassis 330 is coaxial with the outer annular fixing column 310, and the second driving mechanism 400 is used to drive the outer cable carrying chassis 330 to rotate; the second inner surrounding wall 340 is provided on the outer cable carrying chassis 330, and the second inner surrounding wall 340 is provided around the outer annular fixing column 310; the second outer peripheral wall 350 is provided on the outer cable carrying chassis 330, and the second outer peripheral wall 350 is provided around the second inner surrounding wall 340, and the outer cable carrying chassis 330, the second outer peripheral wall 350 and the second inner surrounding wall 340 form a second annular space for placing cables.

[0061] In this embodiment, when pulling out the cable in the second annular space on the outer turntable 300, the second driving mechanism 400 can drive the outer cable carrying chassis 330 to rotate around the outer annular fixed column 310 through the second rotating mechanism, thereby driving the second inner wall 340 and the second outer wall 350 on the outer cable carrying chassis 330 to rotate synchronously. At this time, the cables stored in the second annular space can be pulled out layer by layer from top to bottom, and laid to the seabed through other equipment on the cable-laying ship. When loading the cable, the construction personnel can connect one end of the cable to the second inner wall 340, and then the second driving mechanism 400 can drive the outer cable carrier chassis 330 to rotate in the opposite direction around the outer fixed axis through the second rotating mechanism, and the cable is wound around the inner wall of the second outer wall 350 circle by circle through the corresponding annular jig, and then wound around the outer wall of the second inner wall 340 circle by circle from the inner wall of the second outer wall 350, and so on until the cable is stored in the second annular space for placing the cable formed by the outer cable carrier chassis 330, the second outer wall 350 and the second inner wall 340. In this way, the cable can be efficiently and stably drawn out or loaded.

[0062] like Figure 4 and Figure 5 As shown, a second outer through hole for the outer annular fixing column 310 to pass through is provided at the center of the outer base 320 in the vertical direction, and a plurality of second rotating mechanisms are arranged at intervals on the inner side wall of the second outer through hole, and each second rotating mechanism comprises: a support seat 331 and a rotating roller 332. The support seat 331 is connected to the inner side wall of the second outer through hole; the rotating roller 332 is arranged on the support seat 331, and the circumferential surface of the rotating roller 332 is in contact with the outer wall of the outer annular fixing column 310, and the central axis of the rotating roller 332 is parallel to the central axis of the outer cable carrier chassis 330. Thus, the outer cable carrier chassis 330 can rotate around the outer annular fixing column 310.

[0063] like Figure 4 and Figure 5 As shown, a second drive chain 333 is arranged around the outer side of the outer cable carrier chassis 330 along its circumference, and the second drive mechanism 400 includes: a second drive motor 410 and a second drive gear 420. The second drive gear 420 is connected to the second drive motor 410, and the second drive chain 333 is meshed with the second drive gear 420. The second drive motor 410 is used to drive the second drive gear 420 to rotate, and the second drive gear 420 and the second drive chain 333 cooperate to drive the outer cable carrier chassis 330 to rotate around the outer annular fixed column 310. When the second drive gear 420 and the second drive chain 333 are meshed with each other, they can rotate smoothly and continuously. At the same time, since the second drive chain 333 is always controlled by the second drive gear 420 during movement, the rotation accuracy of the inner cable carrier chassis 130 can be effectively improved. Therefore, the second drive mechanism 400 can accurately control the rotation speed of the inner turntable 100. In some other embodiments of the present invention, the second driving mechanism 400 can control the rotation speed of the outer turntable 300 to match the rotation speed of the inner turntable 100, so that the cable laying equipment has the same pulling speed when pulling the cables in the first annular space and the second annular space. In this way, the two cables in the first annular space and the second annular space can be laid synchronously, thereby further improving the cable laying efficiency.

[0064] like Figure 4 and Figure 5 As shown, a second annular track is arranged on the outer base 320, and the second annular track is coaxial with the outer cable carrying chassis 330. A plurality of outer track rollers 321 are arranged on the second annular track at intervals along its circumferential direction. The outer cable carrying chassis 330 is placed on each outer track roller 321, and the central axis of each outer track roller 321 is consistent with the horizontal direction and intersects with the central axis of the outer annular fixing column 310.

[0065] In this embodiment, a plurality of outer track rollers 321 whose central axes are consistent with the horizontal direction and intersecting with the central axis of the outer annular fixed column 310 are arranged on the second annular track, and each outer track roller 321 supports the lower surface of the outer cable carrying chassis 330. When the outer cable carrying chassis 330 rotates around the outer fixed axis, each outer track roller 321 can rotate, which can effectively reduce friction and improve the continuity of the outer cable carrying chassis 330 during rotation.

[0066] In some other embodiments of the present invention, the concentric double cable turntable further includes: a controller, the controller is electrically connected to the first drive mechanism 200 and the second drive mechanism 400, respectively, and the controller is used to control the first drive mechanism 200 to drive the inner turntable 100 to rotate and control the second drive mechanism 400 to drive the outer turntable 300 to rotate. In some other embodiments of the present invention, the controller can control the first drive mechanism 200 and the second drive mechanism 400 to drive the outer turntable 300 and the inner turntable 100 respectively, and match the rotation speed of the outer turntable 300 with the rotation speed of the inner turntable 100, so that the cable laying equipment has the same pulling speed when pulling the cables in the first annular space and the second annular space. In this way, the two cables in the first annular space and the second annular space can be laid synchronously, thereby further improving the cable laying efficiency.

[0067] In summary, the concentric double cable turntable of the present invention is provided with an outer turntable 300 around the outer side of the inner turntable 100, and the inner turntable 100 and the outer turntable 300 are rotated by using the first driving mechanism 200 and the second driving mechanism 200 respectively. Since the inner turntable 100 and the outer turntable 300 can store cables of different types respectively, the inner turntable 100 and the outer turntable 300 can lay two cables at the same time when rotating, thereby improving the cable laying efficiency. In addition, since the outer turntable 300 is arranged around the inner turntable 100, compared with two independent single cable turntables, the volume is reduced, and the deck space of the cable laying ship can be effectively utilized.

[0068] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0069] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A concentric double cable turntable, characterized in that: include: An inner rotating disk, wherein a first annular space for placing cables is provided in the inner rotating disk; A first driving mechanism, the first driving mechanism is used to be connected to the inner rotating disk to drive the inner rotating disk to rotate around its axis; An outer turntable, the outer turntable is arranged around the inner turntable, and the central axis of the outer turntable coincides with the central axis of the inner turntable, and a second annular space for placing cables is arranged in the outer turntable; A second driving mechanism, wherein the second driving mechanism is used to be connected to the outer turntable to drive the outer turntable to rotate around its axis.

2. The concentric double cable turntable according to claim 1, characterized in that: The inner turntable comprises: An inner fixed shaft, wherein the inner fixed shaft is arranged along a vertical direction; An inner base, the inner base is used to be arranged on the deck of the cable-laying vessel, and the lower end of the inner fixed shaft is fixedly connected to the inner base; An inner cable carrier chassis, the inner cable carrier chassis is placed on the inner base, a first inner through hole for the inner fixed shaft to pass through is provided at the center of the inner cable carrier chassis in the vertical direction, the inner cable carrier chassis is rotatably connected to the inner fixed shaft through a first slewing mechanism, the inner cable carrier chassis and the inner fixed shaft are coaxial, and the first driving mechanism is used to drive the inner cable carrier chassis to rotate around the inner fixed shaft; A first inner surrounding wall, wherein the first inner surrounding wall is disposed on the inner cable carrying chassis and is disposed around the inner fixed axis; A first peripheral wall is disposed on the inner cable carrier chassis and surrounds the first inner peripheral wall. The inner cable carrier chassis, the first peripheral wall and the first inner peripheral wall form the first annular space for placing cables.

3. The concentric double cable turntable according to claim 2, characterized in that: A second inner through hole for the inner fixed shaft to pass through is provided at the center of the inner base in the vertical direction, and the inner fixed shaft is connected to the deck of the cable-laying vessel. The first slewing mechanism includes: an inner rotating shaft, the inner rotating shaft being arranged in the first inner through hole along the vertical direction, the inner rotating shaft being connected to the inner cable carrier chassis through a plurality of first pins, and the inner rotating shaft being provided with a third inner through hole along the vertical direction for the inner fixed shaft to pass through; A slewing bearing, wherein the slewing bearing is arranged in the third inner through hole, the outer ring of the slewing bearing is connected to the inner wall of the third inner through hole, the inner ring of the slewing bearing is provided with a fourth inner through hole for allowing the inner fixed shaft to pass through, and the inner ring of the slewing bearing is connected to the inner fixed shaft.

4. The concentric double cable turntable according to claim 3, characterized in that: A first drive chain is wound around the outer side of the inner cable carrier chassis along its circumference, and the first drive mechanism includes: a first drive motor; A first driving gear, wherein the first driving gear is connected to the first driving motor, the first driving chain is meshed with the first driving gear, the first driving motor is used to drive the first driving gear to rotate, and the first driving gear cooperates with the first driving chain to drive the inner cable carrying chassis to rotate.

5. The concentric double cable turntable according to claim 4, characterized in that: A first annular track is arranged on the inner base, the first annular track is coaxial with the inner cable carrying chassis, a plurality of inner track rollers are arranged on the first annular track at intervals along its circumferential direction, the inner cable carrying chassis is placed on each of the inner track rollers, and a central axis of each of the inner track rollers is consistent with a horizontal direction and intersects with a central axis of the inner fixed shaft.

6. The concentric double cable turntable according to claim 1, characterized in that: The outer turntable comprises: An outer annular fixing column, the outer annular fixing column is arranged along the vertical direction, a first outer through hole for the inner rotating disk to pass through is arranged at the center of the outer annular fixing column along the vertical direction, and the central axis of the outer annular fixing column coincides with the central axis of the inner rotating disk; An outer base, the outer base is used to be arranged on the deck of the cable-laying vessel, and the outer base is arranged around the inner turntable, and the lower end of the outer annular fixing column is fixedly connected to the outer base; An outer cable carrier chassis, the outer cable carrier chassis is placed on the outer base, and the outer cable carrier chassis is arranged around the outer annular fixing column, a second outer through hole for the outer annular fixing column to pass through is arranged at the center of the outer cable carrier chassis in the vertical direction, the outer cable carrier chassis is rotatably connected to the outer annular fixing column through a plurality of second rotating mechanisms, the outer cable carrier chassis and the outer annular fixing column are coaxial, and the second driving mechanism is used to drive the outer cable carrier chassis to rotate around the outer annular fixing column; A second inner surrounding wall, wherein the second inner surrounding wall is arranged on the outer cable carrying chassis, and the second inner surrounding wall is arranged around the outer annular fixing column; A second peripheral wall is disposed on the outer cable carrying chassis, and the second peripheral wall is disposed around the second inner peripheral wall. The outer cable carrying chassis, the second peripheral wall and the second inner peripheral wall form the second annular space for placing the cable.

7. The concentric double cable turntable according to claim 6, characterized in that: A plurality of the second rotating mechanisms are arranged at intervals on the inner side wall of the second outer through hole, and each of the second rotating mechanisms comprises: A support seat connected to the inner side wall of the second outer through hole; A swivel roller is arranged on the support seat, and the circumferential surface of the swivel roller is in contact with the outer wall of the outer annular fixing column, and the central axis of the swivel roller is parallel to the central axis of the outer cable carrier chassis.

8. The concentric double cable turntable according to claim 7, characterized in that: A second drive chain is wound around the outer side of the outer cable carrier chassis along its circumference, and the second drive mechanism includes: a second drive motor; A second driving gear, the second driving gear is connected to the second driving motor, the second driving chain is meshed with the second driving gear, the second driving motor is used to drive the second driving gear to rotate, and the second driving gear cooperates with the second driving chain to drive the outer cable carrying chassis to rotate.

9. The concentric double cable turntable according to claim 8, characterized in that: A second annular track is arranged on the outer base, the second annular track is coaxial with the outer cable carrying chassis, a plurality of outer track rollers are arranged on the second annular track at intervals along its circumferential direction, the outer cable carrying chassis is placed on each of the outer track rollers, and the central axis of each of the outer track rollers is consistent with the horizontal direction and intersects with the central axis of the outer annular fixing column.

10. The concentric double cable turntable according to claim 1, characterized in that: Also includes: A controller is electrically connected to the first driving mechanism and the second driving mechanism respectively, and is used to control the first driving mechanism to drive the inner turntable to rotate and control the second driving mechanism to drive the outer turntable to rotate.

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