Method for repairing single-strand cable with sheath
By tightly covering and fixing with ultra-high molecular weight polyethylene fiber repair tape at the cable wear, the complex repair problem after single-strand sheathed cable wear is solved, and cable life extension and strength maintenance are achieved.
Patent Information
- Application Number
- CN202510597089.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2045-05-09
AI Technical Summary
Existing single-strand sheathed cables are complex and costly after wear, resulting in waste of resources and reduced service life.
The repair belt of high-strength materials such as ultra-high molecular weight polyethylene fiber is inserted and pressed along the cable braiding direction to cover the wear area. The inner core of the repair belt is inserted into the rope strand at both ends to ensure tight bonding.
Extend the service life of the cable, reduce resource waste, simplify the repair process, reduce downtime, maintain cable strength, and have a wide range of applications.
Smart Images
Figure CN120273202A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cables, and particularly relates to a repair method for a single-strand sheathed cable. Background Art
[0002] Chemical fiber cables are ropes or cables made of chemical fibers (such as polyester fibers, nylon fibers, polypropylene fibers, ultra-high molecular weight polyethylene fibers, etc.) through weaving, stranding or other processing techniques. It is a flexible connection and fixing tool widely used in multiple fields such as ships, ocean engineering, industrial hoisting, and transportation. Since the cable will come into contact with the equipment on the ship during use, wear will occur on the surface.
[0003] Existing twelve-strand cables often adopt a single-strand sheathed structure, that is, a sheath is woven outside each strand of the cable. By means of the sheath, the strength of the cable is improved. After the cable has been used for a long time, the sheath outside the cable often wears or breaks, making it impossible to protect the internal cable. The internal cable will directly come into contact with the equipment, and soon the internal cable will also be worn. If the cable with only the outer skin damaged and the internal load-bearing components intact is discarded, it will cause a great deal of waste of resources. The existing solution generally repairs the damaged position by winding small thin ropes, but this repair process is complex, costly, and time-consuming. In view of the above problems, a solution is proposed below. Summary of the Invention
[0004] The purpose of the present invention is to provide a repair method for a single-strand sheathed cable to solve the problems raised in the above background art.
[0005] The above technical purpose of the present invention is achieved through the following technical solutions: A repair method for a single-strand sheathed cable includes the following steps: Step 1: Confirm the position of the cable to be repaired, and select several repair tapes according to the size to be repaired. The length of the repair tape should be 1.2 - 1.5 times the length of the position to be repaired; Step 2: Pass the repair tape along the braiding direction of the cable through a strand of the cable to be repaired. At this time, the strand to be repaired will be gradually covered by the repair tape, and the repair tape will wrap the exposed core inside the strand. When the repair tape just passes through the cable, the repair tape will be pressed by two strands; Step 3: Continue to insert the repair tape along the path of the strand to be repaired. At this time, the repair tape will be pressed by four strands, and the repair tape realizes a tight fit with the cable through the pressing of each strand; Step 4: Continuously repeat the above Step 2 and Step 3 to continuously insert the repair tape onto the cable, so that the repair tape can completely cover the worn parts of the strands, and the repair tape can protect the worn parts of the strands; Step 5: When the repair tape completely covers the strands, the repair tape can be straightened manually, and both ends of the repair tape are inserted into the inner core of the strands to fix both ends of the repair tape, thereby completing the repair of the cable.
[0006] Preferably, in Step 1, the material of the repair tape is selected from ultra-high molecular weight polyethylene fiber, polyester fiber, polyamide fiber, aramid fiber or LCP fiber.
[0007] Preferably, the repair tape is plain woven, the thickness of the repair tape is 2.0 - 2.5 mm, and the width of the repair tape is the same as the circumference of the cable strand.
[0008] Preferably, in Step 2, in order to better wrap the repair tape around the strands, the strands can be pried open by a tapered rod to facilitate the threading of the repair tape on the strands.
[0009] Preferably, in Step 4, the number of repair tapes wrapped around the outside of the strands is at least one, and the number of repair tapes is selected according to the actual damage condition of the strands.
[0010] Preferably, in Step 5, after the cable is repaired, the cable is pre-tensioned to ensure uniform stress on the cable.
[0011] Beneficial effects: By repairing the worn part of the cable, it is possible to avoid the situation where the internal cable is quickly worn due to the damage of the outer skin and needs to be discarded as a whole, so that the cable can continue to be put into use, thereby effectively extending its service life, reducing the equipment replacement frequency, and reducing the long-term use cost; the repair tape is made of high-strength materials such as ultra-high molecular weight polyethylene fiber, and is plain woven with a moderate thickness, which can tightly wrap the strands and closely combine with the cable. After repair, the strength of the cable will not be reduced, and the attenuation of the cable strength will be delayed, which can meet the long-term use requirements and avoid being damaged again due to insufficient strength after repair; the repair process steps are clear and definite. Through operations such as prying open the strands and threading the repair tape along the weaving direction, it is easy to be implemented manually without complex equipment and cumbersome processes, and the repair can be quickly completed on-site, reducing the downtime for maintenance and improving production efficiency; according to the actual damage degree of the strands, the number of repair tapes can be flexibly adjusted, which can not only meet the repair requirements for slight wear, but also effectively handle more serious damage. It has a wide range of applications and strong pertinence, providing an effective solution for different types and degrees of cable damage. Description of the Drawings
[0012] Figure 1 It is a schematic diagram of the state of the cable after repair; Figure 2The embodiment is a schematic diagram for showing the process of cable repair. Detailed implementation mode
[0013] The following is only the preferred implementation mode of the present invention. The protection scope is not limited to this embodiment. All technical solutions falling within the idea of the present invention shall belong to the protection scope of the present invention. At the same time, it should be pointed out that for those of ordinary skill in the technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
[0014] See Figure 1 As shown to, a repair method for a single-strand sheathed cable includes the following steps: Step 1: Confirm the position of the cable to be repaired, and select several repair tapes according to the size of the repair required. The length of the repair tape should be 1.2 times the length of the position to be repaired. By designing the length of the repair tape to be longer than the position to be repaired, it can fully ensure that the repair tape completely covers the worn area, so that the damaged area of the rope strand can be wrapped by the repair tape, avoiding missing some damaged parts, thereby effectively protecting the damaged rope strand and preventing it from further deteriorating. When the length of the repair tape is appropriate, it can be better pressed and combined with the rope strand of the cable during the insertion process, and it can also be more firmly fixed after both ends are inserted into the inner core of the rope strand, not prone to loosening and displacement, ensuring the stability of the repair effect. This length not only ensures that the repair tape can fully cover the damaged area, but also will not be difficult to handle in subsequent operations due to being too long, or unable to effectively wrap due to being too short, thereby improving the reliability of the repair and ensuring the performance and safety of the cable after repair.
[0015] The repair tape is made of ultra-high molecular weight polyethylene fiber material, the repair tape is plain woven, the thickness of the repair tape is 2.5 mm, the width of the repair tape is the same as the circumference of the cable rope strand. The repair tape is made of high-strength materials such as ultra-high molecular weight polyethylene fiber and is plain woven with a moderate thickness, which can tightly wrap the rope strand and closely combine with the cable. The repaired cable has high strength and can meet the long-term use requirements, avoiding damage again due to insufficient strength after repair; Step 2: Pass the repair tape along the braiding direction of the cable through a rope strand to be repaired. At this time, the rope strand to be repaired will be gradually covered by the repair tape, and the repair tape will wrap the exposed rope core inside the rope strand. When the repair tape just passes through the cable, the repair tape will be pressed by the two rope strands. In order to better wrap the repair tape around the rope strand, a tapered rod can be used to pry open the rope strand to facilitate the insertion of the repair tape on the rope strand; Step 3: Continue to insert the repair tape along the path of the rope strand to be repaired. At this time, the repair tape will be pressed by four rope strands, and the repair tape realizes close cooperation with the cable through the pressing of each rope strand; Step 4: Continuously repeat the above-mentioned Steps 2 and 3, and continuously insert the repair tape on the cable, so that the repair tape can completely cover the worn parts of the strands. The repair tape can protect the worn parts of the strands. There are a total of 3 repair tapes wrapped outside the strands. According to the actual damage degree of the strands, the number of repair tapes can be flexibly adjusted, which can not only meet the repair needs of minor wear, but also effectively handle more serious damage. It has a wide range of applications and strong pertinence, and provides an effective solution for different types and degrees of cable damage; Step 5: When the repair tape completely covers the strands, the repair tape can be straightened manually, and the two ends of the repair tape are inserted into the inner core of the strands to fix the two ends of the repair tape, thereby completing the repair of the cable. After the cable is repaired, pre-tension the cable to ensure uniform stress on the cable.
[0016] As shown in Table 1, it can be found from the test of a 40mm single-strand sheathed high-modulus polyethylene cable in the laboratory environment that the breaking tensile force of the new cable is 95.2t. The single-strand sheath of the cable is worn out and repaired using the technology of this patent. After repair, the strength of the cable has no obvious loss.
[0017] Table 1 Comparison of the strength of a 40mm single-strand sheathed cable before and after repair Rope strength before damage / t Rope strength after repair / t One wear 95.2 95.8 Three wears 95.2 95.0 Five wears 95.2 95.5 The experimental results show that the proposed repair method can effectively restore the strength of the single-strand sheathed cable. The strength of the repaired cable is basically the same as that before damage. Even in the case of multiple wear, the strength of the cable can still remain at the original strength level. This fully verifies the effectiveness and reliability of the repair method, indicating that the repaired cable can continue to be put into use, meet the long-term use requirements, avoid the overall abandonment of the cable due to the damage of the outer skin, and effectively reduce the equipment update frequency and long-term use cost. At the same time, the repair process is simple to operate, does not require complex equipment and cumbersome procedures, can be quickly completed on-site for repair, reduces the downtime for maintenance, and improves production efficiency.
Claims
1. A repair method for a single-strand sheathed cable, characterized in that, It includes the following steps: Step 1: Confirm the position of the cable to be repaired, and select several repair tapes according to the size of the repair required. The length of the repair tape should be 1.2 - 1.5 times the length of the position to be repaired; Step 2: Pass the repair tape through a strand to be repaired along the braiding direction of the cable. At this time, the strand to be repaired will be gradually covered by the repair tape, and the repair tape will wrap the exposed core inside the strand. When the repair tape just passes through the cable, the repair tape will be pressed by the two strands; Step 3: Continue to insert the repair tape along the path of the strand to be repaired. At this time, the repair tape will be pressed by four strands, and the repair tape will achieve a tight fit with the cable through the pressing of each strand; Step 4: Continue to repeat the above steps 2 and 3, and continuously insert the repair tape on the cable, so that the repair tape can completely cover the worn part of the strand, and the repair tape can protect the worn part of the strand; Step 5: When the repair tape completely covers the strand, the repair tape can be straightened manually, and the two ends of the repair tape are inserted into the inner core of the strand to fix the two ends of the repair tape, thereby completing the repair of the cable.
2. The repair method of a single-strand sheathed cable according to claim 1, characterized in that In step 1, the material of the selected repair tape is ultra-high molecular weight polyethylene fiber, polyester fiber, polyamide fiber, aramid fiber or LCP fiber.
3. A repair method for a single-strand sheathed cable according to claim 2, characterized in that, The repair tape is plain woven, the thickness of the repair tape is 2.0 - 2.5 mm, and the width of the repair tape is the same as the circumference of the cable strand.
4. A repair method for a single-strand sheathed cable according to claim 1, characterized in that, In step 2, in order to better wrap the strand with the repair tape, the strand can be pried open by a tapered rod to facilitate the insertion of the repair tape on the strand.
5. The repair method of a single-strand sheathed cable according to claim 1, characterized in that, In step 4, the number of repair tapes wrapped outside the strand is at least one, and the number of repair tapes is selected according to the actual damage of the strand.
6. A repair method for a single-strand sheathed cable according to claim 1, characterized in that In step 5, after the cable is repaired, the cable is pre-tensioned to ensure uniform stress on the cable.