Hanging and supporting device for submarine cable withstand voltage test

Abstract

The utility model discloses a suspension support device for a submarine cable withstand voltage test, and belongs to the technical field of submarine cable production equipment. The device is characterized by comprising a suspension assembly located at the upper part of the whole device and used for external connection and fixation; the supporting assembly is located below the hanging assembly and used for clamping and fixing the submarine cable; the rotating and fixing assembly comprises a rotating structure and a fixing structure; the hanging assembly and the supporting assembly are rotationally connected through a rotating structure and are relatively fixed through a fixing structure. The submarine cable suspension device eliminates the damage of a conventional suspension mode to the submarine cable, can effectively increase the contact area of the submarine cable during suspension through the lower suspension assembly, can effectively protect the surface of the cable core from being damaged by adopting the silica gel gasket, and can prevent the surface of the submarine cable from being scratched during installation by making the arc chamfer at the inlet. The rotary fixing assembly can assist in adjusting the angle of the submarine cable entering the terminal, and stress generated by forced rotation is reduced.

Description

Technical Field

[0001] The utility model relates to a suspension support device for a submarine cable pressure test and belongs to the technical field of submarine cable production equipment. Background Art

[0002] The withstand voltage test is a necessary test item for the insulation level of submarine cables during the inspection of semi-finished products and finished products. The AC withstand voltage test of submarine cables generally adopts the series resonance method. During the test, the terminal needs to be at a certain distance from the ground, and the corresponding submarine cable needs to be lifted a certain distance and bent at a certain angle. At present, the main way to suspend the submarine cable during the withstand voltage test is to use PP rope to fix the submarine cable on the edge of the tray or use a crane to pull the submarine cable up through a sling.

[0003] However, the two methods of using PP rope to fix the submarine cable to the edge of the tray or using a crane to pull the submarine cable up through a sling have the following defects:

[0004] 1. The contact area between PP rope, sling and submarine cable is small, and the contact position is under great pressure, which can easily cause scratches and damage to the surface of the submarine cable structure;

[0005] 2. The bundling method of PP rope, sling and submarine cable is accidental, and it is easy for the submarine cable to fall off or drop suddenly, which poses certain safety hazards;

[0006] 3. Both of the above methods cannot mainly adjust the angle of the submarine cable. The angle of the submarine cable can only be passively changed by adjusting the terminal angle. However, the stress generated when the submarine cable is bent cannot be eliminated. Maintaining this for a long time will have a certain impact on the quality of the submarine cable. Utility Model Content

[0007] The purpose of the utility model is to provide a suspension support device for a submarine cable pressure test to facilitate the suspension, fixation and angle adjustment of the submarine cable in view of the above-mentioned deficiencies in the prior art.

[0008] The technical solution of the utility model is as follows: A suspension support device for a submarine cable pressure test, characterized in that it comprises:

[0009] The suspension assembly is located at the upper part of the entire device and is used for external fixing;

[0010] A support assembly, located below the suspension assembly, used for clamping and fixing the submarine cable;

[0011] The rotating and fixing component comprises a rotating structure and a fixing structure; the suspension component and the supporting component are respectively rotationally connected through the rotating structure and relatively fixed through the fixing structure.

[0012] In the above scheme, the purpose of adjusting the angle of the submarine cable is achieved by fixing the suspension component to the tray or rack, clamping the submarine cable with the support component, and adjusting the rotation angle of the support component with the rotating structure. The angle of the support component is fixed with the fixed structure to fix the position of the submarine cable.

[0013] Furthermore, the suspension assembly includes an arc-shaped upper cover plate and an arc-shaped lower cover plate, one side of the upper cover plate and the lower cover plate are hinged, and the other side is fixedly connected by screws.

[0014] In the above scheme, the upper suspension assembly is composed of an upper cover plate and a lower cover plate to form an incomplete ring, which is hinged by pins to form a rotatable semi-open structure, which is easy to install and saves time and effort. During installation, the upper and lower covers are fixed closed by screws, so that they can be installed more securely on a pallet or shelf.

[0015] Furthermore, the support assembly includes an arc-shaped upper pressure plate and an arc-shaped lower pressure plate, and the two sides of the upper and lower pressure plates are respectively fixedly connected by screws. The lower support assembly is composed of the upper and lower pressure plates to form a complete ring (Hough structure), and the upper and lower pressure plates are fixed by screws after holding the submarine cable, which increases the contact area with the submarine cable and makes the connection more reliable.

[0016] Furthermore, the support assembly also includes a silicone gasket; the inner wall of the upper pressing plate and the inner wall of the lower pressing plate are respectively provided with a plurality of grooves, and the back of the silicone gasket is provided with convex strips matching the grooves, and the silicone gasket is fixed to the inner wall of the upper pressing plate and the lower pressing plate through the convex strips and the grooves. The silicone gasket in the inner wall groove can prevent the cable core from moving, protect the cable core surface, and play a buffering role. The silicone gasket is arc-shaped and easy to disassemble. The silicone gasket of the appropriate size can be selected according to the cross-sectional size of the submarine cable so as to better fit the surface of the submarine cable.

[0017] Furthermore, the entrance of the silicone gasket is rounded, that is, the top edge of the groove is chamfered with an arc, so as to further protect the surface of the cable core.

[0018] Further, the rotating structure comprises:

[0019] A connecting pipe fixed to the bottom of the lower cover plate;

[0020] Two connecting rings are respectively fixed on the top of the upper pressing plate; the connecting pipe is located between the two connecting rings, and the connecting ring corresponds to the central hole position of the connecting pipe;

[0021] And a rotating shaft passes through the connecting ring and the connecting pipe in sequence to realize the relative rotation of the suspension component and the supporting component; one end of the rotating shaft is provided with a threaded hole.

[0022] The fixed structure comprises:

[0023] Internal straight teeth are evenly distributed on the inner wall of the center hole of the two connecting rings and the connecting pipe;

[0024] The external straight teeth are evenly distributed on the left and right sections of the cylindrical surface of the shaft; the middle section of the cylindrical surface of the shaft is a smooth surface;

[0025] The extended shaft has a smooth cylindrical surface and a threaded column at the end.

[0026] Angle adjustment stage: connect the threaded column of the extension shaft with the threaded hole of the rotating shaft, push the extension shaft into the connecting ring, and make the rotating shaft axially displace in the center hole of the connecting tube (the gap between the inner straight teeth can ensure the smooth displacement of the corresponding outer straight teeth), until the cylindrical surface of the extension shaft corresponds to the inner wall position of one connecting ring, and the middle section of the cylindrical surface of the rotating shaft corresponds to the inner wall position of another connecting ring. At this time, the rotating support assembly, the suspension assembly and the support assembly are in a rotatable state, ensuring that the angle of the submarine cable is adjusted within a controllable range to avoid excessive bending and damage to the cable core.

[0027] Rotation angle within a controllable range: a small arc boss is provided on the end face of the connecting pipe, a large arc boss matching the small arc boss is provided on the end face of the connecting ring, and two limiting structures are symmetrically provided on the arc surface of the large arc boss. The arc surface of the large arc boss is made to correspond to the arc surface of the small arc boss; during rotation, the limiting structure of the large arc boss cooperates with the two end faces of the small arc boss to limit the rotation angle of the connecting ring, so that the support assembly can rotate within a controllable range.

[0028] Pressure resistance stage: reset the shaft displacement until the two sections of the shaft's outer spur teeth are engaged with the inner spur teeth of the two connecting rings, the angle of the lower support assembly is fixed, and the suspension assembly and the support assembly are in a fixed state; remove the extension shaft, install the positioning screw in the threaded hole of the shaft, and the other end of the shaft is provided with a fixing nut. The large end faces of the positioning screw and the fixing nut can limit the two ends of the shaft. The combination of the inner and outer spur teeth can effectively prevent the angle from changing during the pressure resistance process and prevent the risk of sliding.

[0029] During the pressure test preparation, after selecting the appropriate silicone gasket, install the submarine cable into the lower suspension assembly. When the submarine cable is installed into the terminal, adjust the angle of the suspension assembly as the angle of the terminal changes until the test conditions are met. After reaching the test angle, remove the extension shaft and replace the positioning screw to fix the angle.

[0030] Compared with the prior art, the submarine cable in the utility model meets the test requirements through the suspension support device, replacing the current method of PP rope or crane suspension of submarine cables, eliminating the damage to the submarine cable itself caused by the current suspension method, and the lower suspension component can effectively increase the contact area of ​​the submarine cable during suspension. The use of silicone gasket can protect the cable core surface from damage, and the arc chamfer at the entrance can prevent the submarine cable surface from being scratched during installation. The rotating fixing component can assist in adjusting the angle at which the submarine cable enters the terminal and reduce the stress caused by forced rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the utility model;

[0032] Figure 2 It is a structural schematic diagram of the suspension assembly in the utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the extension shaft, rotating shaft, positioning screw and fixing screw in the utility model;

[0034] Figure 4 It is a structural schematic diagram of the rotating shaft of the utility model;

[0035] Figure 5 It is a structural schematic diagram of the support assembly in the utility model;

[0036] Figure 6 It is a structural schematic diagram of the rotating fixing component of the utility model when it is in a rotatable state;

[0037] Figure 7 It is a structural schematic diagram of the rotating fixing assembly in the utility model when it is in a fixed state;

[0038] Figure 8 It is a cross-sectional schematic diagram of the rotating fixing assembly of the present invention when it is in a rotatable state;

[0039] Fig. 9 It is a cross-sectional schematic diagram of the rotating fixing assembly of the present invention when it is in a fixed state;

[0040] Fig.10 This is a schematic diagram of the structure of the silicone gasket in the utility model;

[0041] Fig.11 This is a schematic diagram of the structure of the lower pressure plate in the utility model;

[0042] Fig.12 It is a structural schematic diagram of the end face of the connecting pipe and the end face of the connecting ring in the utility model;

[0043] In the figure: suspension assembly 1, upper cover plate 1-1, lower cover plate 1-2, connecting pipe 1-3, small arc boss 1-3-1, rotating fixing assembly 2, fixing nut 2-1, rotating shaft 2-2, external straight teeth 2-2-1, positioning screw 2-3, extension shaft 2-4, threaded column 2-4-1, supporting assembly 3, upper pressure plate 3-1, lower pressure plate 3-2, groove 3-2-1, connecting ring 3-3, large arc boss 3-3-1, limiting structure 3-3-2, silicone gasket 3-4, convex strip 3-4-1. DETAILED DESCRIPTION

[0044] like Figure 1 As shown, a suspension support device for submarine cable pressure test includes: an upper suspension component 1, a middle rotating fixed component 2, and a lower support component 3. The suspension component and the support component are rotationally connected and relatively fixed through the rotating fixed component.

[0045] like Figure 2 As shown, the suspension assembly 1 includes an arc-shaped upper cover plate 1-1 and an arc-shaped lower cover plate 1-2. One side of the upper and lower cover plates are hinged by a pin, and the other side is fixedly connected by screws, so as to fix the tray.

[0046] like Figure 5 As shown, the support assembly 3 includes an arc-shaped upper pressure plate 3-1 and an arc-shaped lower pressure plate 3-2. The upper and lower pressure plates are fixed by screws after hugging the submarine cable, thereby increasing the contact area with the submarine cable.

[0047] In one embodiment of the present invention, Fig.10 , 11 As shown, the support assembly also includes a silicone gasket 3-4, the inner wall of the upper pressing plate and the inner wall of the lower pressing plate are respectively provided with a plurality of grooves, and the back of the silicone gasket is provided with convex strips 3-4-1 matching the grooves, and the silicone gasket is fixed to the inner wall of the upper pressing plate and the lower pressing plate through the convex strips and the grooves. The top edge of the groove is chamfered with an arc to prevent scratching the surface of the cable core.

[0048] like Figure 2 , 3 As shown in , 4, 6, 7, 8, and 9, the rotating fixed assembly includes: a connecting pipe 1-3 fixed to the bottom of the lower cover plate, two connecting rings 3-3 fixed to the top of the upper pressure plate, a rotating shaft 2-2, and an extension shaft 2-4. Among them:

[0049] The connecting pipe is located between the two connecting rings, the center hole of the connecting ring corresponds to the center hole of the connecting pipe, and the inner walls of the center holes of the two connecting rings and the center hole of the connecting pipe are both provided with inner straight teeth;

[0050] The left and right sections of the cylindrical surface of the shaft 2-2 are provided with external spur teeth 2-2-1 (matching the internal spur teeth), the middle section of the cylindrical surface of the shaft is a smooth surface, one end of the shaft is provided with a threaded hole, and the other end is provided with an external thread (such as Figure 4 As shown); the rotating shaft 2-2 passes through the connecting ring and the connecting pipe;

[0051] The cylindrical surface of the extended shaft 2-4 is a smooth surface, and a threaded column 2-4-1 is provided at its end.

[0052] Angle adjustment stage: Figure 8 As shown, the threaded column 2-4-1 of the extension shaft 2-4 is connected to the threaded hole of the rotating shaft 2-2, and the extension shaft is pushed, and then the rotating shaft is axially displaced in the center hole of the connecting tube until the cylindrical surface of the extension shaft is located in the center hole of the left connecting ring and the middle section of the cylindrical surface of the rotating shaft is located in the center hole of the right connecting ring. At this time, the outer straight teeth of the left section of the rotating shaft are located in the center hole of the connecting tube, and the outer straight teeth of the right section of the rotating shaft extend out of the right connecting ring. Since the outer diameter of the middle section of the rotating shaft and the outer diameter of the extension shaft are slightly smaller, a gap is generated between the center hole of the connecting ring and the two smooth surfaces, and the rotation angle of the support assembly can be smoothly adjusted.

[0053] In one embodiment of the present invention, Fig.12 As shown, the end face of the connecting tube 1-3 is provided with a small arc boss 1-3-1, and the end face of the connecting ring 3-3 is provided with a large arc boss 3-3-1 matching the small arc boss 1-3-1, and two limiting structures 3-3-2 are symmetrically provided on the arc surface of the large arc boss. During assembly, the end faces of the two connecting rings are respectively aligned with the two end positions of the connecting tube, so that the arc surface of the large arc boss corresponds to the arc surface position of the small arc boss; when the connecting ring rotates, the two limiting structures 3-3-2 of the large arc boss 3-3-1 cooperate with the two end faces of the small arc boss 1-3-1 to limit the rotation angle of the connecting ring, so that the support assembly can rotate within a controllable range.

[0054] Pressure resistance stage: Fig. 9 As shown, the axial displacement of the shaft is reset until the two sections of the outer straight teeth of the shaft enter the center holes of the two connecting rings respectively and engage with the inner straight teeth of the two connecting rings, and the suspension assembly and the support assembly are in a fixed state; remove the extension shaft, install the positioning screw 2-3 in the threaded hole of the shaft 2-2, and the other end of the shaft is provided with a fixing nut 2-1.

Claims

1. A suspension support device for a submarine cable pressure test, characterized in that: include: The suspension assembly is located at the upper part of the entire device and is used for external fixing; A support assembly, located below the suspension assembly, used for clamping and fixing the submarine cable; The rotating and fixing component comprises a rotating structure and a fixing structure; the suspension component and the supporting component are respectively rotationally connected through the rotating structure and relatively fixed through the fixing structure.

2. A suspension support device for a submarine cable pressure test according to claim 1, characterized in that: The suspension assembly comprises an arc-shaped upper cover plate and an arc-shaped lower cover plate. One side of the upper cover plate and the lower cover plate are hinged, and the other side is fixedly connected by screws.

3. A suspension support device for a submarine cable pressure test according to claim 2, characterized in that: The support assembly comprises an arc-shaped upper pressing plate and an arc-shaped lower pressing plate, and the two sides of the upper pressing plate and the lower pressing plate are respectively fixedly connected by screws.

4. A suspension support device for submarine cable pressure test according to claim 3, characterized in that: The support assembly also includes a silicone gasket; the inner wall of the upper pressing plate and the inner wall of the lower pressing plate are respectively provided with a plurality of grooves, and the back of the silicone gasket is provided with convex strips matching the grooves, and the silicone gasket is fixed to the inner walls of the upper pressing plate and the lower pressing plate through the convex strips and the grooves.

5. A suspension support device for a submarine cable pressure test according to claim 4, characterized in that: The top edge of the groove is chamfered with an arc.

6. A suspension support device for a submarine cable pressure test according to claim 3, characterized in that: The rotating structure comprises: A connecting pipe fixed to the bottom of the lower cover plate; Two connecting rings are respectively fixed to the top of the upper pressing plate; the connecting pipe is located between the two connecting rings; And the rotating shaft passes through the connecting ring and the connecting pipe in sequence to realize the relative rotation of the suspension component and the supporting component.

7. A suspension support device for a submarine cable pressure test according to claim 6, characterized in that: The fixed structure comprises: Internal straight teeth are evenly distributed on the inner wall of the two connecting rings and the center hole of the connecting pipe; The external straight teeth are evenly distributed on the left and right sections of the cylindrical surface of the shaft; the middle section of the cylindrical surface of the shaft is a smooth surface; The cylindrical surface of the extended shaft is smooth; The two sections of outer straight teeth of the rotating shaft are respectively engaged with the inner straight teeth of the two connecting rings, so that the suspension assembly and the supporting assembly are in a fixed state; Connect the extension shaft to one end of the rotating shaft, push the extension shaft to make the rotating shaft axially displaced until the cylindrical surface of the extension shaft corresponds to the position of one connecting ring and the middle section of the cylindrical surface of the rotating shaft corresponds to the position of another connecting ring, and the suspension assembly and the support assembly are in a rotatable state.

8. A suspension support device for submarine cable pressure test according to claim 7, characterized in that: A threaded column is provided at the end of the extension shaft, a threaded hole is provided at one end of the rotating shaft, and the extension shaft is connected to the threaded hole of the rotating shaft through the threaded column.

9. A suspension support device for a submarine cable pressure test according to claim 8, characterized in that: When the suspension assembly and the support assembly are in a fixed state, a positioning screw is connected in the threaded hole of the rotating shaft, and a fixing nut is arranged at the other end of the rotating shaft.

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