Transport vehicle for submarine cable laying in tunnel

Abstract

The utility model discloses a transport vehicle for submarine cable laying in a tunnel, which comprises a support frame (1) for supporting a submarine cable (4), two universal wheels (2) are respectively arranged on two sides of the support frame (1) along the axis of the submarine cable (4), and the two universal wheels (2) on the same side are parallel to the axis of the submarine cable (4). The universal wheels (2) on the two sides are symmetrically arranged relative to the vertical plane where the axis of the submarine cable (4) is located, and the supporting frame (1) is provided with a concave face (1.1) used for guaranteeing that the submarine cable (4) is stably supported. The transport vehicle for laying the submarine cable in the tunnel is used for assisting smooth transport of the submarine cable in the tunnel, preventing the submarine cable from being damaged and improving the laying quality of the submarine cable.

Description

Technical Field

[0001] The utility model relates to the field of submarine cable laying, and particularly to a conveying vehicle for laying submarine cables in a tunnel. Background Art

[0002] During the laying process of submarine cables, one end of the submarine cable is connected to a power station on land. If the distance between the power station and the landing point of the submarine cable is far, and the diameter of the submarine cable is large or the number of submarine cables is large, the conventional concrete coating can no longer meet the safety requirements for use. Then, a laying tunnel will be specially built for the laying of submarine cables on land to ensure the concentration, use safety, and maintenance convenience of the laying of submarine cables.

[0003] However, the transportation process of submarine cables in the tunnel is difficult. The traditional method is to place rolling logs under the submarine cable during the traction process of the submarine cable to reduce the traction resistance of the submarine cable. However, during the use of rolling logs, there will be a relative movement between the submarine cable and the rolling logs, which is likely to cause surface damage to the submarine cable. At the same time, at the turning point of the tunnel, it is difficult for the rolling logs to smoothly assist the submarine cable to turn. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a conveying vehicle for laying submarine cables in a tunnel, which can assist the smooth conveyance of submarine cables in the tunnel, avoid damage to the submarine cables, and improve the laying quality of submarine cables.

[0005] The technical solution adopted by the utility model to solve the above problems is: a conveying vehicle for laying submarine cables in a tunnel, including a support frame for supporting the submarine cable. Two universal wheels are respectively arranged on both sides of the support frame along the axis of the submarine cable placement. The two universal wheels on the same side are arranged parallel to the axis of the submarine cable, and the universal wheels on both sides are symmetrically arranged with respect to the vertical plane where the axis of the submarine cable is located. A concave surface for ensuring stable support of the submarine cable is arranged on the support frame.

[0006] Compared with the prior art, the advantages of the utility model are as follows: Using the conveying vehicle to support the submarine cable, during the traction process of the submarine cable, the conveying vehicle will move synchronously with the submarine cable, thus avoiding relative displacement between the conveying vehicle and the submarine cable and preventing damage to the connection between the submarine cable and the conveying vehicle. The design of the universal wheels can ensure the moving adaptability of the conveying vehicle when the submarine cable drives the conveying vehicle to move. When the submarine cable turns along the tunnel, the universal wheels also change direction and turn synchronously, and they will not lack the ability to turn like rolling logs. The design of the four universal wheels can ensure the moving stability of the conveying vehicle, and the design of the concave surface can ensure the support uniformity and stability of the submarine cable when it is supported by the conveying vehicle, preventing the submarine cable from rolling on the trolley. At the same time, when the submarine cable turns, the submarine cable can better drive the conveying vehicle to turn.

[0007] As an improvement of the present utility model, the support frame is welded by two transverse circular rods and multiple axial circular rods. Through this improvement, the surfaces of the transverse circular rods and the axial circular rods are smooth. When the submarine cable drives the transport vehicle to move through static friction, the surface of the submarine cable is not easily damaged.

[0008] As an improvement of the present utility model, both the transverse circular rod and the axial circular rod are of hollow tube structure. Through this improvement, on the premise of ensuring the support strength of the transport vehicle and its own mechanical strength, the weight of the transport vehicle can be reduced, thereby improving the flexibility of the transport vehicle and facilitating the submarine cable to better drive the transport vehicle to move.

[0009] As an improvement of the present utility model, the diameter of the axial circular rod is smaller than that of the transverse circular rod, and the upper vertex of the axial circular rod is not higher than the upper vertex of the transverse circular rod at the welding position of the axial circular rod. The two transverse circular rods are used to support the submarine cable, and the axial circular rods are used to shape the two transverse circular rods. Through this improvement, the submarine cable is mainly supported by the transverse circular rods, and the support of the axial circular rods to the submarine cable is reduced. Because there are many layers of structures in the submarine cable that are formed by winding, and the winding angle is more biased towards the axial direction, that is, the winding pitch is larger. Therefore, when the axial circular rod is used for support, it is easier to deform the winding structure, thereby affecting the use quality of the submarine cable. Therefore, the transverse circular rod is used as the support to reduce the support of the axial circular rod to the submarine cable.

[0010] As an improvement of the present utility model, the upper end of the transverse circular rod is wrapped with an anti-slip pad. Through this improvement, the friction between the transverse circular rod and the submarine cable is increased, and the probability of relative movement between the submarine cable and the transverse circular rod is reduced, thereby reducing the probability of wear on the surface of the submarine cable. At the same time, an anti-slip pad with relatively poor wear resistance can be used. When wear occurs due to relative movement, the wear is concentrated on the anti-slip pad, and the submarine cable can also be prevented from being damaged.

[0011] As an improvement of the present utility model, a connecting plate is provided at the upper end of the universal wheel, and the connecting plate is fixedly welded to the transverse circular rod. The axial circular rod located above the connecting plate is also welded to the connecting plate. Through this improvement, the welding firmness between the support frame and the universal wheel is ensured.

[0012] As an improvement of the present utility model, the universal wheel further includes a rotating connection disk, a wheel connection frame, and a wheel. The rotating connection disk is fixedly connected below the connection plate. The upper end of the wheel connection frame is rotatably connected to the rotating connection disk along the vertical direction, and the lower end of the wheel connection frame is rotatably connected to the wheel along the horizontal direction. The rotation axis of the wheel connection frame and the wheel is arranged in a staggered manner with the rotation axis of the rotating connection disk and the wheel connection frame. Through the above improvement, firstly, the design of the rotating connection disk and the wheel connection frame realizes the universal rotation function that the wheel can rotate 360 degrees along the vertical direction. And the design that the rotation axis of the wheel connection frame and the wheel is arranged in a staggered manner with the rotation axis of the rotating connection disk and the wheel connection frame enables the wheel to be behind the moving direction of the rotation axis of the rotating connection disk and the wheel connection frame when the submarine cable drives the transporter to move. When the traction of the submarine cable is interrupted and the submarine cable has a tendency to reverse, the transporter will form a short stagnant gap, that is, before the submarine cable reverses, the wheel connection frame will rotate 180 degrees by itself and then reverse. At this time, it can give the operator time to restore the traction power in time to avoid reverse. Of course, if the traction force of the submarine cable is interrupted after it is removed from the transporter, the submarine cable has already contacted the ground, and the frictional force is very large, and it is not easy to reverse. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall front view structural schematic diagram of the present utility model.

[0014] Figure 2 is the overall top view structural schematic diagram of the present utility model.

[0015] Figure 3 is the structural schematic diagram of the connection between the axial circular rod and the transverse circular rod of the present utility model.

[0016] Figure 4 is the overall side view structural schematic diagram of the present utility model.

[0017] Figure 5 is the application structural schematic diagram of the present utility model.

[0018] Shown in the figure: 1. Support frame, 1.1 Concave surface, 1.2 Transverse circular rod, 1.3 Axial circular rod, 2. Universal wheel, 2.1 Connection plate, 2.2 Rotating connection disk, 2.3 Wheel connection frame, 2.4 Wheel, 3. Anti-slip pad, 4. Submarine cable, 5. Tunnel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The embodiments of the present utility model will be further described below with reference to the accompanying drawings.

[0020] As Figure 1-2As shown in the figure, a transporter for laying submarine cables in a tunnel includes a support frame 1 for supporting the submarine cable 4. On both sides of the axis along which the submarine cable 4 is placed, two universal wheels 2 are provided respectively. The two universal wheels 2 on the same side are arranged parallel to the axis of the submarine cable 4, and the universal wheels 2 on both sides are symmetrically arranged with respect to the vertical plane where the axis of the submarine cable 4 is located. A concave surface 1.1 for ensuring stable support of the submarine cable 4 is provided on the support frame 1.

[0021] As Figure 2-4 shown in the figure, the support frame 1 is welded by two transverse circular rods 1.2 and multiple axial circular rods 1.3. Both the transverse circular rod 1.2 and the axial circular rod 1.3 are of hollow tube structure. The diameter of the axial circular rod 1.3 is smaller than that of the transverse circular rod 1.2, and the upper vertex of the axial circular rod 1.3 is not higher than the upper vertex of the transverse circular rod 1.2 at the welding position of the axial circular rod 1.3. The two transverse circular rods 1.2 are used to support the submarine cable 4, and the axial circular rods 1.3 are used to shape the two transverse circular rods 1.2.

[0022] As Figure 1-4 shown in the figure, the upper end of the transverse circular rod 1.2 is wrapped with an anti-slip pad 3.

[0023] As Figure 1 、 Figure 3 、 Figure 4 shown in the figure, a connecting plate 2.1 is provided at the upper end of the universal wheel 2. The connecting plate 2.1 is welded and fixed to the transverse circular rod 1.2. The axial circular rod 1.3 above the connecting plate 2.1 is also welded and fixed to the connecting plate 2.1. The universal wheel 2 further includes a rotating connection disk 2.2, a wheel connection frame 2.3 and a wheel 2.4. The rotating connection disk 2.2 is fixedly connected below the connecting plate 2.1. The upper end of the wheel connection frame 2.3 is rotatably connected to the rotating connection disk 2.2 along the vertical direction. The lower end of the wheel connection frame 2.3 is rotatably connected to the wheel 2.4 along the horizontal direction. The rotation axes of the wheel connection frame 2.3 and the wheel 2.4 are arranged in a staggered manner with respect to the rotation axis of the rotating connection disk 2.2 and the wheel connection frame 2.3.

[0024] As Figure 5As shown in the figure, when laying the submarine cable 4 in the tunnel 5, a conveyor vehicle is placed under the submarine cable 4 at intervals. This distance needs to ensure that the submarine cable 4 does not touch the ground when it sags between two conveyor vehicles; when the submarine cable 4 is placed on the conveyor vehicle, the submarine cable 4 is supported by the concave surface 1.1, remains on the central axis of the conveyor vehicle, and does not shift or rotate to both sides; when the submarine cable 4 is towed and moves along the tunnel 5, the static friction between the submarine cable 4 and the conveyor vehicle will cause the submarine cable 4 to drive the conveyor vehicle to move synchronously. At this time, relative movement and damage between the submarine cable 4 and the conveyor vehicle can be avoided. Since the support frame 1 is made of metal material and the surface of the submarine cable 4 is made of PE material, if short relative movement occurs between the submarine cable 4 and the conveyor vehicle due to the complex road conditions in the tunnel 5, the surface of the submarine cable 4 will be damaged prior to the support frame 1. Therefore, by adding the anti-slip pad 3, the anti-slip pad 3 will be damaged prior to the surface of the submarine cable 4, thus playing a role in protecting the surface of the submarine cable 4. At the same time, the anti-slip pad 3 can increase the friction between the submarine cable 4 and the conveyor vehicle, further reducing the probability of relative movement between the submarine cable 4 and the conveyor vehicle; when turning in the tunnel 5, the design of the universal wheel 2 can easily complete the change of the conveyor vehicle's turning direction, unlike the log which is difficult to turn and easily causes relative movement between the log and the submarine cable 4, resulting in damage; finally, the rotating shafts of the wheel connecting frame 2.3 and the wheel 2.4 are arranged out of alignment with the rotating shaft of the rotating connection disk 2.2 and the wheel connecting frame 2.3, which can prevent the phenomenon of rapid reverse sliding when the submarine cable 4 is not removed from the conveyor vehicle and the traction stops, giving the operator time to restore the traction power in time and avoiding reverse sliding, and it has little impact on the normal traction process.

[0025] The above is only an illustration of the best embodiment of the present invention, but it should not be construed as a limitation of the claims. The present invention is not limited to the above embodiments, and its specific structure is allowed to vary. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A transport vehicle for laying submarine cables in tunnels, characterized in that: The invention comprises a support frame (1) for supporting a submarine cable (4), wherein the support frame (1) is provided with two universal wheels (2) on both sides of the axis along which the submarine cable (4) is placed, the two universal wheels (2) on the same side are arranged parallel to the axis of the submarine cable (4), and the universal wheels (2) on both sides are arranged symmetrically with respect to the vertical plane where the axis of the submarine cable (4) is located, and the support frame (1) is provided with a concave surface (1.1) for ensuring stable support of the submarine cable (4).

2. A transport vehicle for laying submarine cables in tunnels according to claim 1, characterized in that: The support frame (1) is formed by welding two transverse circular rods (1.2) and a plurality of axial circular rods (1.3).

3. A transport vehicle for laying submarine cables in tunnels according to claim 2, characterized in that: The transverse circular rod (1.2) and the axial circular rod (1.3) are both hollow tube structures.

4. A transport vehicle for laying submarine cables in tunnels according to claim 2, characterized in that: The diameter of the axial circular rod (1.3) is smaller than the diameter of the transverse circular rod (1.2), and the upper end vertex of the axial circular rod (1.3) is not higher than the upper end vertex of the transverse circular rod (1.2) at the welding point of the axial circular rod (1.3). The two transverse circular rods (1.2) are used to support the submarine cable (4), and the axial circular rod (1.3) is used to shape the two transverse circular rods (1.2).

5. A transport vehicle for laying submarine cables in tunnels according to claim 4, characterized in that: The upper end of the transverse circular rod (1.2) is wrapped with an anti-slip pad (3).

6. A transport vehicle for laying submarine cables in tunnels according to claim 2, characterized in that: A connecting plate (2.1) is provided at the upper end of the universal wheel (2), the connecting plate (2.1) is welded and fixed to the transverse circular rod (1.2), and the axial circular rod (1.3) provided above the connecting plate (2.1) is also welded and fixed to the connecting plate (2.1).

7. A transport vehicle for laying submarine cables in tunnels according to claim 6, characterized in that: The universal wheel (2) further comprises a rotating connection disk (2.2), a wheel connection frame (2.3) and a wheel (2.4); the rotating connection disk (2.2) is fixedly connected below the connection plate (2.1); the upper end of the wheel connection frame (2.3) is rotationally connected to the rotating connection disk (2.2) along a vertical direction; the lower end of the wheel connection frame (2.3) is rotationally connected to the wheel (2.4) along a horizontal direction; and the rotation axis of the wheel connection frame (2.3) and the wheel (2.4) is staggered with the rotation axis of the rotating connection disk (2.2) and the wheel connection frame (2.3).

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