Cable lead sheath recovery tool and recovery method

Abstract

The invention provides a cable lead sheath recovery tool and recovery method, and solves the technical problems of complex process, insufficient sealing reliability, poor connection strength and the like in a traditional recovery method, the cable lead sheath recovery tool comprises a first connection plate, and the first connection plate is provided with an accommodating cavity; a forming assembly is hinged in the containing cavity and used for making contact with the lead sheath and compressing the inner diameter of the lead sheath so that the lead sheath can be close to the lead sheath of the cable body. A driving assembly is arranged at the rear end of the forming assembly and used for driving the forming assembly to move. The invention also provides a cable lead sheath recovery method. The method can be widely applied to the technical field of cable repair.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cable repair, and more particularly relates to a cable lead sheath recovery tool and recovery method. BACKGROUND

[0002] In the production process of lead-sheathed cables, downtime caused by equipment failure is likely to cause the lead sheath to be interrupted. In addition, the lead sheath layer of the cable may be damaged due to external impact or wear during subsequent links such as transportation, installation and laying. For submarine cables, it is crucial to restore the integrity and sealing of the lead sheath in the factory joint manufacturing process. The traditional recovery method usually uses manual repair method for cable repair, which has problems such as complex process, insufficient sealing reliability, poor connection strength, etc. Therefore, there is an urgent need for an efficient, reliable and easy-to-operate cable lead sheath recovery tool and recovery method. SUMMARY

[0003] The purpose of the present application is to overcome the deficiencies in the background art and provide a cable lead sheath recovery tool and recovery method.

[0004] To achieve the above-mentioned purpose, the present application provides a cable lead sheath recovery tool, which comprises a first connecting plate, wherein the first connecting plate is provided with a receiving cavity;

[0005] A forming assembly is hinged in the receiving cavity and used to contact the lead sheath and compress the inner diameter of the lead sheath so that it is close to the lead sheath of the cable body.

[0006] The rear end of the forming assembly is provided with a driving assembly for driving the forming assembly to move.

[0007] Preferably, the forming assembly comprises a thrust plate, a second connecting plate and a compression roller, both ends of the thrust plate are fixedly connected with connecting plates, the upper and lower ends of each connecting plate are hingedly connected with a second connecting plate, the other end of the second connecting plate is hingedly connected with the first connecting plate, and a compression roller is arranged between the two parallel second connecting plates.

[0008] Preferably, the driving assembly comprises a fixed plate, the fixed plate is located between the two parallel first connecting plates, a fixed frame is fixedly arranged at the rear end of the fixed plate, a motor is fixedly installed in the fixed frame, the output end of the motor is connected with a lead screw through a shaft coupling, the lead screw penetrates through the fixed plate and is connected with a lead screw nut, and the lead screw nut is connected with the thrust plate.

[0009] Preferably, the forming assembly is provided with two groups which are symmetrically arranged, and each group of forming assemblies corresponds to a driving assembly.

[0010] Preferably, a horizontal plate is arranged between the upper and lower ends of the two parallel first connecting plates, and the upper horizontal plate and the lower horizontal plate are fixedly connected through bolts.

[0011] Preferably, each of the second connecting plates is provided with two pressure rollers.

[0012] Preferably, a control component is also provided, the control component including a controller and a distance sensor, the controller being fixed to any of the fixed plates, and the distance sensor being disposed on the thrust plate.

[0013] Preferably, four distance sensors are provided, arranged symmetrically in pairs.

[0014] This invention also provides a method for restoring the lead sheath of cables, applicable to factory-made flexible joints for submarine cables, comprising the following steps:

[0015] (1) Making lead pipes: Calculate the inner and outer diameters of the lead pipes according to the cable specifications, and extrude the lead pipes of the corresponding length using a lead extrusion machine;

[0016] (2) Pretreatment: Clean the broken or damaged parts of the lead sheath, remove the surface oxide layer and dirt, put the lead pipe on the cable body, and move it to one end;

[0017] (3) Inner layer restoration: Weld the cable conductor and restore the insulation layer, shielding layer, and water-blocking layer;

[0018] (4) Lead pipe diameter reduction and shaping: Move the lead pipe back to the missing lead sheath of the cable body, and use the cable lead sheath restoration tool to reduce the outer diameter of the lead pipe to be close to the outer diameter of the cable body.

[0019] (5) Lead pipe welding: Weld the lead pipe to the lead sheath of the cable body according to the cable specifications.

[0020] This invention also provides a method for restoring the lead sheath of a cable, applicable to situations where only the lead sheath is damaged in the cable structure, comprising the following steps:

[0021] (1) Pretreatment: Clean the broken or damaged parts of the lead sheath, remove the surface oxide layer and dirt, and fix the cable;

[0022] (2) Making lead pipes: Select and make lead plates of the appropriate length, width and thickness to the cable to be restored; bend the lead plates on the outer layer of the cable and weld them into pipes using welding fixtures to make lead pipes;

[0023] (3) Lead pipe diameter reduction and shaping: The lead pipe is placed on the part of the cable to be repaired, and the lead pipe is reduced in diameter and shaped using the cable lead sheath restoration tool.

[0024] (4) Lead pipe welding: The lead pipe is welded to the lead sheath of the cable body using welding fixtures.

[0025] The beneficial effects of this invention are as follows:

[0026] This invention provides a tooling and method for restoring cable lead sheaths. The tooling includes a first connecting plate, a forming component between the first connection, and a driving component at the rear end of the forming component. This tooling has a simple structure. Through the cooperation of the driving component and the forming component, the aperture is tightened to compress and shape the inner diameter of the lead sheath, making it closely resemble the lead sheath of the cable body. This significantly improves repair efficiency and quality consistency, and is particularly suitable for restoring lead sheaths in harsh environments such as submarine cable factory flexible joints, effectively ensuring the mechanical strength of the connection and long-term sealing reliability. Furthermore, by cooperating with the driving component and the forming component, or by replacing the first connecting plate, the repair needs of cables of different specifications can be met, making it more suitable for industrial production. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0029] Figure 2 This is a top view of Embodiment 1 of the present invention;

[0030] Figure 3 This is a schematic diagram of the molding component in Embodiment 1 of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the first connecting plate in Embodiment 1 of the present invention.

[0032] Explanation of symbols in the diagram:

[0033] 1. First connecting plate; 2. Receiving cavity; 3. Thrust plate; 4. Second connecting plate; 5. Pressure roller; 6. Fixing plate; 7. Fixing frame; 8. Motor; 9. Lead screw; 10. Lead screw nut; 11. Horizontal plate; 12. Controller; 13. Distance sensor. Detailed Implementation

[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] Please refer to the following: Figure 1 and Figure 4 The present application provides a cable lead sheath restoration tool according to an embodiment. The cable lead sheath restoration tool includes a first connecting plate 1, the first connecting plate 1 is provided with a receiving cavity 2, and a forming component is hinged in the receiving cavity 2 for contacting the lead sheath, tightening the aperture, and compressing the inner diameter of the lead sheath to shape it. A driving component is provided at the rear end of the forming component for driving the forming component.

[0038] Specifically, such as Figure 3 As shown, the forming assembly includes a thrust plate 3, a second connecting plate 4, and a pressure roller 5. The two ends of the thrust plate 3 are fixedly welded with connecting plates. The upper and lower ends of each connecting plate are hinged with the second connecting plate 4. The other end of the second connecting plate 4 is hinged to the first connecting plate 1. A pressure roller 5 is provided between the two parallel second connecting plates 4.

[0039] like Figure 2 As shown, the drive assembly includes a fixed plate 6, which is located between two parallel first connecting plates 1. A fixed frame 7 is fixedly provided at the rear end of the fixed plate 6. A motor 8 is fixedly installed inside the fixed frame 7. The output end of the motor 8 is connected to a lead screw 9 through a coupling. The lead screw 9 passes through the fixed plate 6 and is connected to a lead screw nut 10. The lead screw nut 10 is connected to a thrust plate 3.

[0040] The motor 8 drives the lead screw 9 to rotate, which in turn pushes the thrust plate 3 to move back and forth, causing the shaping component to move towards the lead sheath. The pressure roller 5 is used to press and shape the lead sheath to compress the inner diameter of the lead sheath so that it is close to the lead sheath of the cable body.

[0041] Furthermore, each second connecting plate 4 has two pressure rollers 5. The two pressure rollers 5 help to fix the lead sheath and also apply pressure to shape the lead sheath.

[0042] In one embodiment, the forming components are provided in two sets, which are symmetrically arranged, and each set of forming components corresponds to a driving component, so that the pressure roller 5 can press and shape the lead sheath from four directions, ensuring that it shrinks evenly and forms tightly, effectively guaranteeing the mechanical strength of the connection and the long-term sealing reliability.

[0043] Furthermore, a horizontal plate 11 is provided between the upper and lower ends of the first connecting plate 1 at both ends of the molding component, and the two upper horizontal plates 11 and the two lower horizontal plates 11 are fixedly connected by bolts.

[0044] In one embodiment, a control component is also provided, which includes a controller 12 and distance sensors 13. The controller 12 is fixed on any of the fixed plates 6, and the distance sensors 13 are disposed on the thrust plate 3. Four distance sensors 13 are provided, arranged symmetrically in pairs. The motor 8 and the distance sensors 13 are all electrically connected to the controller 12.

[0045] By controlling the synchronous movement of two motors 8 via controller 12, the distance the thrust plate 3 moves can be controlled, thus adapting to cables of different specifications. Furthermore, because the first connecting plate 1 and the second connecting plate 4 are hinged, different specifications of the first connecting plate 1 can also be used to adapt to cables of different specifications. By setting up symmetrical distance sensors 13, the distance to the aluminum sheath is measured from four points, ensuring that the aluminum sheath is in the center position, thereby ensuring its uniform contraction and tight forming.

[0046] Example 2

[0047] This invention provides a method for restoring the aluminum sheath of cables, applicable to the restoration of factory-made flexible joints in submarine cables. The specific steps are as follows:

[0048] (1) Extruded lead pipe: Calculate the inner and outer diameters of the lead pipe according to the cable specifications, and extrude the lead pipe of the corresponding length through the lead extrusion machine.

[0049] (2) Pretreatment: Clean the broken or damaged parts of the lead sheath, remove the surface oxide layer and dirt, fix the cable, put the lead pipe on the cable body, and move it to one end.

[0050] (3) Inner layer restoration: Weld the cable conductor and restore the insulation layer, shielding layer and water-blocking layer.

[0051] (4) Lead pipe diameter reduction and shaping: Move the lead pipe back to the missing lead sheath of the cable body, and use the cable lead sheath restoration tool in Example 1 to shrink the outer diameter of the lead pipe to a diameter close to that of the cable body; Specifically, place the cable between the two forming components, the controller 12 controls the motor 8 to run, drives the lead screw 9 to rotate, and drives the push plate 3 to move towards the lead sheath of the cable. The distance sensor 13 feeds back the distance between the two push plates 3 and the aluminum sheath, so that the aluminum sheath can be in the center position. The push plate 3 drives the four second connecting plates 4 to rotate, thereby bringing the four sets of pressure rollers 5 closer to the aluminum sheath and clamping and shaping the lead sheath in four directions.

[0052] (5) Lead pipe welding: Weld the lead pipe to the lead sheath of the cable body according to the cable specifications.

[0053] (6) Repair the welded lead sheath, check its sealing performance, and perform anti-corrosion treatment.

[0054] Example 3

[0055] This invention provides a method for restoring the aluminum sheath of cables, applicable to situations where only the lead sheath is damaged in the cable structure. The specific steps are as follows:

[0056] (1) Pretreatment: Clean the broken or damaged parts of the lead sheath, remove the surface oxide layer and dirt, and fix the cable.

[0057] (2) Making lead pipes: Select and make lead plates of the same length, width and thickness as the cable to be restored; bend the lead plates on the outer layer of the cable and weld them into pipes using welding fixtures to make lead pipes.

[0058] (3) Lead pipe diameter reduction and shaping: The lead pipe is placed on the part of the cable to be repaired, and the lead pipe is reduced in diameter and shaped using the cable lead sheath restoration tool in Example 1.

[0059] (4) Lead pipe welding: The lead pipe is welded to the lead sheath of the cable body using welding fixtures.

[0060] (5) Repair the welded lead sheath, check its sealing performance and perform anti-corrosion treatment.

[0061] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cable lead sheath restoration tool, characterized in that: Includes a first connecting plate, which has a receiving cavity; The cavity is hinged with a forming component for contacting the lead sheath, compressing the inner diameter of the lead sheath, and making it similar to the lead sheath of the cable body. The rear end of the molding component is provided with a driving component for driving the molding component to move.

2. The cable lead sheath restoration tooling according to claim 1, characterized in that: The forming assembly includes a push plate, a second connecting plate, and a pressure roller. The two ends of the push plate are fixedly welded with connecting plates. Each connecting plate has a second connecting plate hinged to its upper and lower ends. The other end of the second connecting plate is hinged to a first connecting plate. A pressure roller is provided between two parallel second connecting plates.

3. The cable lead sheath restoration fixture according to claim 1, characterized in that: The drive assembly includes a fixed plate located between two parallel first connecting plates. A fixed frame is fixedly mounted at the rear end of the fixed plate. A motor is fixedly installed inside the fixed frame. The output end of the motor is connected to a lead screw via a coupling. The lead screw passes through the fixed plate and is connected to a lead screw nut. The lead screw nut is connected to a thrust plate.

4. The cable lead sheath restoration tooling according to claim 1, characterized in that: The molding components are provided in two groups, symmetrically arranged, and each group of molding components corresponds to a driving component.

5. The cable lead sheath restoration tooling according to claim 1, characterized in that: A horizontal plate is provided between the upper and lower ends of the two parallel first connecting plates, and the upper and lower horizontal plates are fixedly connected by bolts.

6. The cable lead sheath restoration tool according to claim 2, characterized in that: Each of the second connecting plates is provided with two pressure rollers.

7. The cable lead sheath restoration tooling according to claim 1, characterized in that: It also includes a control component, which includes a controller and a distance sensor. The controller is fixed to any fixed plate, and the distance sensor is mounted on the thrust plate.

8. The cable lead sheath restoration tooling according to claim 7, characterized in that: There are four distance sensors, arranged symmetrically in pairs.

9. A method for restoring the lead sheath of a cable, utilizing the cable lead sheath restoration fixture described in claims 1-8, characterized in that: For factory-made flexible joints suitable for submarine cables, the following steps are included: (1) Making lead pipes: Calculate the inner and outer diameters of the lead pipes according to the cable specifications, and extrude the lead pipes of the corresponding length using a lead extrusion machine; (2) Pretreatment: Clean the broken or damaged parts of the lead sheath, remove the surface oxide layer and dirt, put the lead pipe on the cable body, and move it to one end; (3) Inner layer restoration: Weld the cable conductor and restore the insulation layer, shielding layer, and water-blocking layer; (4) Lead pipe diameter reduction and shaping: Move the lead pipe back to the missing lead sheath of the cable body, and use the cable lead sheath restoration tool to reduce the outer diameter of the lead pipe to be close to the outer diameter of the cable body. (5) Lead pipe welding: Weld the lead pipe to the lead sheath of the cable body according to the cable specifications.

10. A method for restoring the lead sheath of a cable, utilizing the cable lead sheath restoration fixture described in claims 1-8, characterized in that: This method is applicable when only the lead sheath of the cable structure is damaged, and includes the following steps: (1) Pretreatment: Clean the broken or damaged parts of the lead sheath, remove the surface oxide layer and dirt, and fix the cable; (2) Making lead pipes: Select and make lead plates of the appropriate length, width and thickness to the cable to be restored; bend the lead plates on the outer layer of the cable and weld them into pipes using welding fixtures to make lead pipes; (3) Lead pipe diameter reduction and shaping: The lead pipe is placed on the part of the cable to be repaired, and the lead pipe is reduced in diameter and shaped using the cable lead sheath restoration tool. (4) Lead pipe welding: The lead pipe is welded to the lead sheath of the cable body using welding fixtures.

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