Cable laying mechanism and cable laying device

Abstract

The utility model discloses a cable laying mechanism and a cable laying device, and belongs to the technical field of offshore cable laying, the cable laying mechanism comprises a frame, a hydraulic device and a double-cone pulley structure, the bottom of the frame is provided with a plurality of supporting rods, and the frame is fixedly connected with the top lifting end of the hydraulic device through the supporting rods; the frame is provided with penetrating holes used for installation of the driving cone pulley and the driven cone pulley, the double-cone pulley structure is composed of the driving cone pulley and the driven cone pulley which are installed in the frame, and the driving cone pulley and the driven cone pulley are connected through a transmission steel belt. The driving cone pulley comprises a first connecting shaft, a hydraulic cone and a first fixed cone, the first connecting shaft is installed in the frame, the hydraulic cone and the first fixed cone are installed at the two ends of the first connecting shaft respectively, the hydraulic cone is composed of a hydraulic part and a movable cone, and the distance between the movable cone and the first fixed cone is controlled through the hydraulic part. The device can adapt to cables of different specifications, and the cable lowering curvature can be adjusted in time.

Description

Technical Field

[0001] This utility model relates to a cable laying device, specifically a cable lowering mechanism and a cable laying device, belonging to the field of marine cable laying technology. Background Technology

[0002] Submarine communication cables are primarily used for communication services, are expensive, but offer a high level of security. Submarine power cables are mainly used for underwater transmission of high-power electrical energy, serving the same purpose as underground power cables, only differing in application and laying method. Jiang Junjie of Ocean University of China, in his feasibility study on submarine cable laying, mentioned the necessity of controlling the cable's entry angle into the water and its bending radius for precise cable deployment. Submarine cable laying devices to assist in cable laying have gradually gained attention both domestically and internationally. However, current research on underwater bridge technology is insufficient. Flexible cable laying requires consideration of the cable's limit bending radius. Firstly, when the cable's bending radius reaches its limit, the cable is highly likely to break due to stress, leading to unnecessary losses. Secondly, current mainstream submarine cable laying devices can only adapt to single-specification submarine cables, unable to accommodate different types of cables, and cannot adjust the cable's curvature during laying in a timely manner according to environmental changes. Therefore, this application is submitted. Utility Model Content

[0003] The purpose of this invention is to provide a cable laying mechanism and cable laying device to solve the above problems. It can adapt to various specifications of submarine cables, and there is no need to change the laying device when laying other specifications of cables. It can also adjust the curvature in a timely manner according to environmental changes.

[0004] This utility model achieves the above objectives through the following technical solution: a cable lowering mechanism, comprising:

[0005] The frame has several support rods at the bottom as an external support structure for mounting the double conical wheel structure;

[0006] The hydraulic device includes a frame that is fixedly connected to the top lifting end of the hydraulic device via a support rod. By controlling the lifting of the support rod and the frame through the hydraulic device, the double conical wheel structure installed on the frame can move in the vertical direction, and the double conical wheel structure can be used to adapt to cables of different specifications.

[0007] The double-cone wheel structure consists of an active conical wheel and a driven conical wheel installed within the frame. The active and driven conical wheels are connected by a transmission steel belt. The steel cable enters through the driven conical wheel, is guided by the transmission steel belt, and is discharged into the sea by the active conical wheel. Both the active and driven conical wheels are composed of two cones with adjustable gaps. By adjusting the gap between the two cones, the entry angle of the steel cable into the water after being discharged from the active conical wheel is controlled. The double-cone wheel structure is based on the cones that make up the wheel structure. By controlling the distance between the cones, the double-cone wheel structure can change its bending radius to adapt to different specifications of submarine cables.

[0008] Preferably, the frame has through holes for mounting the active and driven conical wheels, and a shaft seal is installed in the through holes to effectively reduce corrosion caused by sea winds to the device.

[0009] Preferably, the frame is provided with inverted T-shaped passages for workers to pass through, facilitating maintenance and repair.

[0010] Preferably, the hydraulic device consists of a chassis, a hydraulic cylinder, and a connecting frame. The hydraulic cylinder is fixedly installed on the top of the chassis, and the connecting frame is disposed on the telescopic end of the hydraulic cylinder. The connecting frame is used for the fixed connection of the support rod.

[0011] Preferably, a baffle is provided on one side of the connecting frame.

[0012] Preferably, the active cone wheel includes a first connecting shaft installed within the frame, a hydraulic cone and a first fixed cone respectively installed at both ends of the first connecting shaft, the hydraulic cone being composed of a hydraulic component and a movable cone, the distance between the movable cone and the first fixed cone being controlled by the hydraulic component, thereby changing the bending radius of the active cone wheel to adapt to different specifications of submarine cables.

[0013] Preferably, the driven cone wheel includes a second connecting shaft installed within the frame, an elastic cone and a second fixed cone respectively installed at both ends of the first connecting shaft, the elastic cone being composed of an elastic element and a movable cone, and the distance between the movable cone and the second fixed cone can be adaptively adjusted according to the cable size under the support of the elastic element.

[0014] A cable laying device includes a cable lowering mechanism, a pipe-laying vessel, a drum and a tensioner mounted on the top of the pipe-laying vessel. The drum winds up the cable, and the cable lowering mechanism is installed at one end of the top of the pipe-laying vessel. After being tensioned by the tensioner, the cable is lowered into the sea by the cable lowering mechanism. The cable lowering structure with a double-cone wheel structure replaces the existing underwater bridge, which can adapt to various specifications of submarine cables. Laying other specifications of cables does not require changing the laying device, and the curvature can be adjusted in a timely manner according to environmental changes.

[0015] The beneficial effects of this utility model are: This utility model replaces the existing underwater bridge with a cable-laying structure featuring a double-cone wheel structure, which can adapt to various specifications of submarine cables. Laying other specifications of cables does not require changing the laying device, saving time and effort, reducing laying costs, and can also adjust the curvature in a timely manner according to environmental changes for rapid lowering. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the lower cable structure of this utility model;

[0017] Figure 2 This is a top view of the lower cable structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the frame and hydraulic device in this utility model;

[0019] Figure 4 This is a schematic diagram of the driven conical wheel in this utility model;

[0020] Figure 5 This is a schematic diagram of the active conical wheel in this utility model;

[0021] Figure 6 This is a schematic diagram of the cable laying device of this utility model.

[0022] In the diagram: 1. Frame; 11. Shaft seal; 12. Channel; 2. Support rod; 3. Hydraulic device; 31. Chassis; 32. Hydraulic cylinder; 33. Connecting frame; 34. Baffle; 4. Driving cone wheel; 41. Hydraulic cone; 42. First fixed cone; 43. First connecting shaft; 5. Driven cone wheel; 51. Elastic cone; 52. Second fixed cone; 53. Second connecting shaft; 6. Transmission steel belt; 7. Pipe-laying vessel; 8. Drum; 9. Tensioner; 10. Pipeline. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6As shown, a cable lowering mechanism includes a frame 1, a hydraulic device 3, and a double conical wheel structure. The bottom of the frame 1 has several support rods 2 as an external support structure for mounting the double conical wheel structure. The frame 1 is fixedly connected to the top lifting end of the hydraulic device 3 through the support rods 2. The hydraulic device 3 controls the lifting of the support rods 2 together with the frame 1, enabling the double conical wheel structure installed on the frame 1 to move in the vertical direction. The double conical wheel structure can adapt to cables of different specifications. The frame 1 has through holes for installing the active conical wheel 4 and the driven conical wheel 5. A shaft seal 11 is installed in the through holes to effectively reduce corrosion caused by sea wind to the device. The frame 1 has an inverted T-shaped channel 12 for workers to pass through, which facilitates maintenance and repair by workers, and also allows for easy observation of the cable condition. When seawater enters the frame 1, it can also be quickly discharged.

[0025] The double-cone wheel structure consists of an active conical wheel 4 and a driven conical wheel 5 installed within the frame 1. The active conical wheel 4 and the driven conical wheel 5 are connected by a transmission steel belt 6. The steel cable enters through the driven conical wheel 5, is guided by the transmission steel belt 6, and is discharged into the sea by the active conical wheel 4. Both the active conical wheel 4 and the driven conical wheel 5 are composed of two cones with adjustable gaps. By adjusting the gap between the two cones, the entry angle of the steel cable into the water after being discharged from the active conical wheel 4 is controlled. The double-cone wheel structure is based on the cones that make up the wheel structure. By controlling the distance between the cones, the double-cone wheel structure can change its bending radius to adapt to different specifications of submarine cables.

[0026] The active cone wheel 4 includes a first connecting shaft 43 installed in the frame 1, a hydraulic cone 41 and a first fixed cone 42 respectively installed at both ends of the first connecting shaft 43. The hydraulic cone 41 is composed of a hydraulic component and a movable cone. The distance between the movable cone and the first fixed cone 42 is controlled by the hydraulic component, thereby changing the bending radius of the active cone wheel 4 to adapt to submarine cables of different specifications.

[0027] Driven cone wheel 5 includes a second connecting shaft 53 installed in the frame 1, an elastic cone 51 and a second fixed cone 52 respectively installed at both ends of the first connecting shaft 43. The elastic cone 51 is composed of an elastic element and a movable cone. With the support of the elastic element, the distance between the movable cone and the second fixed cone 52 can be adaptively adjusted according to the size of the cable.

[0028] The hydraulic device 3 consists of a chassis 31, a hydraulic cylinder 32, and a connecting frame 33. The hydraulic cylinder 32 is fixedly installed on the top of the chassis 31, and the connecting frame 33 is set on the telescopic end of the hydraulic cylinder 32. The connecting frame 33 is used for the fixed connection of the support rod 2, and a baffle 34 is provided on one side of the connecting frame 33.

[0029] like Figure 6As shown, a cable laying device includes a cable lowering mechanism, a pipe-laying vessel 7, a drum 8 and a tensioner 9 mounted on top of the pipe-laying vessel 7. The drum 8 winds up the pipe cable 10. The cable lowering mechanism is installed at one end of the top of the pipe-laying vessel 7. After the pipe cable 10 is tensioned by the tensioner 9, it is lowered into the sea by the cable lowering mechanism. Compared with existing offshore cable laying devices, the cable lowering structure with a double conical wheel structure replaces the launching bridge, which can adapt to various specifications of submarine cables. There is no need to change the laying device when laying other specifications of cables, saving time and labor, reducing laying costs, and can also adjust the curvature in time according to environmental changes for rapid lowering.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cable lowering mechanism, characterized in that, include: Framework (1); The frame (1) is fixedly connected to the top lifting end of the hydraulic device (3); The double cone wheel structure consists of an active cone wheel (4) and a driven cone wheel (5) installed in the frame (1). The active cone wheel (4) and the driven cone wheel (5) are connected by a transmission steel belt (6). The steel cable enters through the driven cone wheel (5), and after being guided by the transmission steel belt (6), it is discharged into the sea by the active cone wheel (4). Both the active cone wheel (4) and the driven cone wheel (5) are composed of two cones with adjustable gaps. The angle of entry of the steel cable into the water after being discharged from the active cone wheel (4) is controlled by adjusting the gap between the two cones.

2. The cable lowering mechanism according to claim 1, characterized in that: The frame (1) has several support rods (2) at its bottom, and the frame (1) is fixedly connected to the top lifting end of the hydraulic device (3) through the support rods (2).

3. The cable lowering mechanism according to claim 1, characterized in that: The frame (1) has through holes for mounting the driving cone wheel (4) and the driven cone wheel (5), and a shaft seal (11) is provided in the through holes.

4. The cable lowering mechanism according to claim 1, characterized in that: The frame (1) is provided with an inverted T-shaped channel (12) for workers to pass through.

5. The cable lowering mechanism according to claim 1, characterized in that: The hydraulic device (3) consists of a chassis (31), a hydraulic cylinder (32) and a connecting frame (33). The hydraulic cylinder (32) is fixedly installed on the top of the chassis (31). The connecting frame (33) is located on the telescopic end of the hydraulic cylinder (32). The connecting frame (33) is used for the fixed connection of the support rod (2).

6. The cable lowering mechanism according to claim 5, characterized in that: A baffle (34) is provided on one side of the connecting frame (33).

7. The cable lowering mechanism according to claim 1, characterized in that: The active cone wheel (4) includes a first connecting shaft (43) installed in the frame (1), a hydraulic cone (41) and a first fixed cone (42) respectively installed at both ends of the first connecting shaft (43). The hydraulic cone (41) is composed of a hydraulic component and a movable cone. The distance between the movable cone and the first fixed cone (42) is controlled by the hydraulic component.

8. The cable lowering mechanism according to claim 1, characterized in that: The driven cone wheel (5) includes a second connecting shaft (53) installed in the frame (1), an elastic cone (51) and a second fixed cone (52) respectively installed at both ends of the second connecting shaft (53). The elastic cone (51) is composed of an elastic element and a movable cone. With the support of the elastic element, the distance between the movable cone and the second fixed cone (52) can be adaptively adjusted according to the size of the cable.

9. A cable laying device, characterized in that: The system includes a cable lowering mechanism as described in any one of claims 1-8, a pipe-laying vessel (7), a drum (8) and a tensioner (9) disposed on the top of the pipe-laying vessel (7), wherein the drum (8) winds up the pipe cable (10), the cable lowering mechanism is installed at one end of the top of the pipe-laying vessel (7), and the pipe cable (10) is tensioned by the tensioner (9) and then lowered into the sea by the cable lowering mechanism.

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