A marine salvage hoisting rope with early warning function, its preparation method, and a marine salvage hoisting system.

Abstract

This invention relates to the field of marine salvage rope technology, specifically to a marine salvage lifting rope with early warning function, its preparation method, and a marine salvage lifting system. The marine salvage lifting rope includes a rope body and an early warning rope core located at the center of the rope body. The early warning rope core includes a fiber core and, centered on the fiber core, an inner layer of colorant, an outer layer of insulating layer, a flexible armor layer, and a sheath layer. The early warning rope core can withstand 60% to 70% of the breaking tensile force of the rope body. This invention can provide early warning of overload on the lifting rope during marine salvage, preventing lifting accidents, and is simple in structure and easy to manufacture.

Description

Technical Field

[0001] This invention relates to the field of marine salvage rope technology, specifically to a marine salvage hoisting rope with early warning function, its preparation method, and a marine salvage hoisting system. Background Technology

[0002] Marine salvage refers to engineering operations that retrieve objects sunk in the sea, including ships, aircraft, and cargo. Salvage operations in waterways and port areas can also clear navigational obstacles.

[0003] Ocean salvage inevitably requires salvage and hoisting systems. During the hoisting process, accidents such as rope breakage due to improper selection of hoisting slings or severe wear and tear causing overloading of the slings occur frequently. The resulting hazards are not singular; cargo may fall and injure workers, or the hoisted object may be damaged. In either case, the losses are irreversible. Furthermore, using metal slings in an underwater environment further increases the difficulty of operation and construction costs.

[0004] Existing lifting ropes may break without warning after prolonged use or exceeding their tensile strength, leading to unpredictable accidents during lifting operations. CN202110846172.0 discloses a color-changing, force-indicating rope. This rope utilizes an embedded ball between multiple twisted bundles of individual ropes. Taking advantage of the tension of the individual ropes under stress, the outer pressure layer on the surface of the embedded ball is compressed, forcing a pressure rod to move inward and triggering the release of lubricating oil. This lubricating oil is delivered to the individual ropes via a pre-set color-changing line, providing lubrication and protection. Furthermore, when the tension is excessive, it triggers the release of water-based pigment, which is then displayed through the color-changing line as a warning. The drawbacks of this patent are that the color transmission via the color-changing line is affected when the rope is submerged in water, and the structure is relatively complex. Summary of the Invention

[0005] To address the technical problem of the difficulty in providing early warning of rope breakage in water, this invention provides a marine salvage hoisting rope with early warning function, its preparation method, and a marine salvage hoisting system. This system can provide early warning of overload stress on the hoisting rope during marine salvage, preventing hoisting accidents. At the same time, it has a simple structure and is easy to manufacture.

[0006] In a first aspect, the present invention provides a marine salvage hoisting rope with an early warning function, comprising a rope body and an early warning rope core located at the center of the rope body; the early warning rope core comprises a fiber core and a colorant layer, an isolation layer, a flexible armor layer, and a sheath layer arranged from the inside out around the fiber core;

[0007] Among them, the maximum tensile force that the flexible armor layer can withstand is the preset tensile force of the warning rope core, and the breaking tensile force that the warning rope core can withstand is 60% to 70% of the breaking tensile force that the rope body can withstand.

[0008] Furthermore, the rope body is a single-braided or multi-layered braided rope composed of an eight-strand or twelve-strand structure as its basic structure, and the rope body material is one or more of ultra-high molecular weight polyethylene fiber, aramid fiber, liquid crystal polyester fiber, and PBO fiber.

[0009] Furthermore, the fiber core has a single-strand twisted structure, and the fiber core material is one or more of ultra-high molecular weight polyethylene fiber, aramid fiber, liquid crystal polyester fiber, and PBO fiber.

[0010] Furthermore, the color developer layer is a powdered water-soluble dye, preferably a water-soluble dye powder in orange, red, blue, or other colors that form a sharp contrast with the rope body.

[0011] Furthermore, both the isolation layer and the sheath layer are made of polyethylene or rubber, which serve as an isolation layer to prevent moisture from penetrating into the warning rope core.

[0012] Furthermore, the flexible armor layer structure is a sixteen-strand, twenty-four-strand, or thirty-two-strand covering structure, and the flexible armor layer material is one or more of ultra-high molecular weight polyethylene fiber, aramid fiber, liquid crystal polyester fiber, and PBO fiber.

[0013] Furthermore, one end of the rope body is provided with an eye loop, and the eye loop is provided with a matching ball knot, which is connected to the rope body by a short rope.

[0014] Secondly, the present invention provides a method for preparing a marine salvage hoisting rope with an early warning function, comprising the following steps:

[0015] S1. Prepare a fiber core with a single twisted yarn structure, and coat the surface of the fiber core with a color developer to form a color developer layer;

[0016] S2. A melt-coated isolation layer is applied over the color developer layer;

[0017] S3. The first preset specification fiber is made into a first specification twisted yarn with half of S twist direction and Z twist direction. The first specification twisted yarn is woven and wrapped with a flexible armor layer with a 16-strand, 24-strand or 32-strand braided structure outside the isolation layer.

[0018] S4. A plastic-coated sheath layer is melt-coated on the outside of the flexible armor layer to obtain the early warning rope core;

[0019] S5. The second preset specification fiber is made into a second specification twisted yarn with half of S twist and Z twist. Different numbers of second preset specification twisted yarns are combined to make Z direction strands according to the S twist and S direction strands according to the Z twist to make rope strands.

[0020] S6. Install the S-twist rope strands into the Z-direction spindle position, and make an eight-strand or twelve-strand rope body by installing the Z-twist rope strands into the S-direction spindle position. Add a warning rope core at the center of each strand interlacing point to obtain the finished product.

[0021] Furthermore, in step S3, the first preset fiber specification is 4800~16000D, and the first specification twist is 20~50T / m; in step S5, the second preset fiber specification is 15000~32000D, and the second specification twist is 10~20T / m.

[0022] Thirdly, the present invention provides a marine salvage and hoisting system, which includes a marine salvage and hoisting rope with an early warning function.

[0023] The beneficial effects of this invention are that the warning rope core provided by this invention can withstand 60% to 70% of the breaking tensile force that the rope body can withstand. When the hoisting rope is about to be overloaded, the warning rope core breaks first. The rebound force generated by the fiber core breakage disperses and pops out the color developer layer, expanding the dissolution range of the color developer. This allows the color developer layer to dissolve faster in water and penetrate to the surface of the rope body, forming a sharp contrast with the color of the hoisting rope. This reminds the user that the sling has been overloaded and needs to be inspected and replaced, thus playing a warning role and reducing the occurrence of accidents. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0026] Figure 2 This is a schematic diagram of the early warning rope core structure in Embodiment 1 of the present invention.

[0027] Figure 3 This is a cross-sectional view of the warning rope core in Embodiment 1 of the present invention.

[0028] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0029] In the diagram, 1-rope body, 2-warning rope core, 21-fiber core, 22-developer layer, 23-isolation layer, 24-flexible armor layer, 25-sheath layer, 3-eye ring, 4-spherical knot, 5-short rope, 6-second binding line, 7-first binding line. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0031] Example 1

[0032] like Figure 1-3 The marine salvage and hoisting rope with early warning function described in this invention includes a rope body 1 and an early warning rope core 2 located at the center of the rope body 1. The early warning rope core 2 includes a fiber core 21 and, centered on the fiber core 21, an inner layer 22, an outer layer 23, a flexible armor layer 24, and a sheath layer 25 arranged from the inside out. The colorant layer 22 is a powdered water-soluble dye, the maximum tensile force that the flexible armor layer 24 can withstand is the preset tensile force of the early warning rope core, and the breaking tensile force that the early warning rope core 2 can withstand is 60% to 70% of the breaking tensile force that the rope body 1 can withstand.

[0033] The warning rope core 2 provided by this invention can withstand a breaking tensile force of 60% to 70% of the breaking tensile force that the rope body 1 can withstand. When the hoisting rope is about to be overloaded, the warning rope core 2 breaks first. The rebound force generated by the breakage of the fiber core 21 disperses and pops out the color developer layer 22, expanding the dissolution range of the color developer. This allows the color developer layer 22 to dissolve faster in water and penetrate into the surface of the rope body 1, forming a sharp contrast with the color of the rope body 1. This serves as a warning to the user that the sling has been overloaded and needs to be inspected and replaced, thus reducing the occurrence of accidents.

[0034] Example 2

[0035] like Figure 4 The difference between this embodiment and embodiment 1 is that one end of the rope body 1 is provided with an eye loop 3, the eye loop 3 is provided with a matching spherical knot 4, and the spherical knot 4 is connected to the rope body 1 through a short rope 5.

[0036] Example 3

[0037] The method for preparing the marine salvage hoisting rope with early warning function according to the present invention includes the following steps:

[0038] S1. A fiber core 21 with a single twisted structure is prepared from ultra-high molecular weight polyethylene fiber. The fiber core 21 has a diameter of 4 mm. A color developer layer 22 is formed by embedding an orange water-soluble dye on the surface of the fiber core 21.

[0039] S2. After melting polyethylene material at a temperature of 160~230℃, extrusion coating is applied to the outside of the color developer layer 22 to form an isolation layer 23.

[0040] S3. The first preset specification fiber is made into a first specification twisted yarn with half of S twist and Z twist. The first preset specification fiber specification is 4800D, the first specification twisted yarn twist is 20T / m, and the first specification twisted yarn is woven and wrapped with a flexible armor layer 24 of 24 strands with a braided structure outside the isolation layer 23.

[0041] S4. Using polyethylene material, a plastic-coated sheath layer 25 is melt-coated on the outside of the flexible armor layer 24 at a temperature of 160~230℃ to obtain the warning rope core 2;

[0042] S5. The second preset specification fiber is made into a second specification twisted yarn with half of S twist and Z twist. The second preset specification fiber specification is 16000D and the twist of the second specification twisted yarn is 15T / m. Thirty-seven second preset specification twisted yarns are combined to make Z direction strands according to the S twist and S direction strands according to the Z twist to make rope strands.

[0043] S6. The S-twist rope strands are installed in the Z-direction spindle position, and the Z-twist rope strands are installed in the S-direction spindle position to make a twelve-strand rope body 1. A warning rope core 2 is added to the center of each strand interlacing point. The weaving pitch is 8 times the diameter of the rope body 1 to obtain the finished product with a diameter of 40mm.

[0044] Example 4

[0045] The method for preparing the marine salvage hoisting rope with early warning function according to the present invention includes the following steps:

[0046] S1. A fiber core 21 with a single twisted structure is prepared using PBO fiber. The fiber core 21 has a diameter of 5 mm. A color developer layer 22 is formed by embedding a yellow water-soluble dye on the surface of the fiber core 21.

[0047] S2. After melting polyethylene material at a temperature of 160~230℃, extrusion coating is applied to the outside of the color developer layer 22 to form an isolation layer 23.

[0048] S3. The first preset specification fiber is made into a first specification twisted yarn with half of S twist and Z twist. The first preset specification fiber specification is 16000D, the first specification twisted yarn twist is 50T / m, and the first specification twisted yarn is woven and wrapped with a flexible armor layer 24 of 24 strands with a braided structure outside the isolation layer 23.

[0049] S4. Using polyethylene material, a plastic-coated sheath layer 25 is melt-coated on the outside of the flexible armor layer 24 at a temperature of 160~230℃ to obtain the warning rope core 2;

[0050] S5. The second preset specification fiber is made into a second specification twisted yarn with half of S twist and Z twist. The second preset specification fiber specification is 15000D and the twist of the second specification twisted yarn is 20T / m. Thirty-seven second preset specification twisted yarns are combined to make Z direction strands according to the S twist and S direction strands according to the Z twist to make rope strands.

[0051] S6. The S-twist rope strands are installed in the Z-direction spindle position, and the Z-twist rope strands are installed in the S-direction spindle position to make an eight-strand rope body 1. A warning rope core 2 is added to the center of each strand interlacing point. The weaving pitch is 8 times the diameter of the rope body 1 to obtain the finished product with a diameter of 36mm.

[0052] Example 5

[0053] The method for preparing the marine salvage hoisting rope with early warning function according to the present invention includes the following steps:

[0054] S1. A fiber core 21 with a single twisted yarn structure is prepared using aramid fiber. The fiber core 21 has a diameter of 6 mm. A color developer layer 22 is formed by embedding a red water-soluble dye on the surface of the fiber core 21.

[0055] S2. After melting polyethylene material at a temperature of 160~230℃, extrusion coating is applied to the outside of the color developer layer 22 to form an isolation layer 23.

[0056] S3. The first preset specification fiber is made into a first specification twisted yarn with half of S twist direction and Z twist direction. The first preset specification fiber specification is 5000D, the first specification twisted yarn twist is 20T / m, and the first specification twisted yarn is woven and wrapped with a flexible armor layer 24 with a braided structure of 24 strands outside the isolation layer 23.

[0057] S4. Using polyethylene material, a plastic-coated sheath layer 25 is melt-coated on the outside of the flexible armor layer 24 at a temperature of 160~230℃ to obtain the warning rope core 2;

[0058] S5. The second preset specification fiber is made into a second specification twisted yarn with half of S-twist and Z-twist. The second preset specification fiber specification is 20000D and the twist of the second specification twisted yarn is 10T / m. Sixty second preset specification twisted yarns are combined to make Z-direction strands according to the S-twist and S-direction strands according to the Z-twist to make rope strands.

[0059] S6. Install the S-twist rope strands into the Z-direction spindle position, and make an eight-strand rope body 1 by installing the Z-twist rope strands into the S-direction spindle position. Add a warning rope core 2 at the center of each strand interlacing point. The weaving pitch is 8 times the diameter of the rope body 1 to obtain the finished product with a diameter of 60mm.

[0060] S7. The end of the rope body 1 of one weaving loop length is processed into a cone shape. After leaving a loop 3 with the same diameter as the rope body 1, the cone is inserted into the rope body 1 in reverse. The insertion length is 21 times the diameter of the rope body 1. A 5cm first binding line 7 is inserted and wrapped around the end of the cone to prevent it from being pulled out after being stressed.

[0061] S8. Take a section of hoisting rope, and wrap one end of the rope clockwise and counterclockwise around the bottom of the rope to form the first loop. Then wrap it around the bottom of the rope from the top to form the second loop. Then pass the second loop through the top and the first loop through the bottom to form the third loop. Continue wrapping the rope around the bottom and pass it through the middle of the intersection of the three loops. Pull the two ends of the rope taut to form a ball knot 4, and remove the excess rope at the top. Leave a 30cm short rope 5 at the end of the ball knot 4, and then insert the remaining part into the rope body 1. At the point where the rope is inserted, insert and wrap a 5cm second binding line 6 to prevent the inserted part from being pulled out under stress. By using the eye loop 3 and the ball knot 4 to open and close, the use of binding straps, hooks and other accessories is reduced, the operation difficulty and operation time are reduced, and the construction cost is reduced.

[0062] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be covered within the protection scope of the present invention.

Claims

1. A marine salvage hoisting rope with a pre-warning function, characterized in that, The rope body and the early warning rope core at the center of the rope body; the early warning rope core includes a fiber core, and a color developing agent layer, an isolation layer, a flexible armor layer, and a sheath layer from inside to outside of the fiber core; The breaking tension of the early warning rope core is 60%-70% of the breaking tension of the rope body; The fiber core is a single twisted wire structure, and the material of the fiber core is one or more of the following: ultra-high molecular weight polyethylene fiber, aramid fiber, liquid crystal polyester fiber, and PBO fiber; The color developing agent layer is a powdery water-soluble dye; The materials of the isolation layer and the sheath layer are both polyethylene or rubber; The flexible armor layer has a structure of sixteen strands, twenty-four strands, or thirty-two strands, and the material of the flexible armor layer is one or more of the following: ultra-high molecular weight polyethylene fiber, aramid fiber, liquid crystal polyester fiber, and PBO fiber; When the hoisting rope is about to be overloaded, the early warning rope core is broken first, the rebound force generated by the breaking of the fiber core scatters and pops out the color developing agent layer, expands the range of the color developing agent layer, and accelerates the dissolution of the color developing agent layer in water and the penetration of the color developing agent layer to the surface of the rope body, so that the color developing agent layer forms a sharp contrast with the rope body; One end of the rope body is provided with an eye ring, and the eye ring is provided with a matching spherical knot, and the spherical knot is connected with the rope body through a short rope, and specifically includes: The tail end of a rope body with a weaving cycle length is processed into a conical body, an eye ring with a size equal to the diameter of the rope body is reserved, the conical body is inserted into the rope body in reverse, the length of the inserted part is 21 times the diameter of the rope body, and a first binding line with a length of 5 cm is inserted and wound at the end of the inserted conical body to prevent the inserted part from being pulled out under stress; A section of hoisting rope is taken, the rope is wound around the rope body from the bottom to the top in clockwise and counterclockwise directions to form a first loop, the rope is then wound around the rope body from the top to the bottom to form a second loop, the rope is then taken out from the upper part of the second loop and the lower part of the first loop to form a third loop, the rope is then taken out from the middle part of the intersection of the three loops, the two ends of the rope are pulled tightly, a spherical knot is formed, and the excess rope above the spherical knot is removed, 30 cm of short rope is reserved at the tail end of the spherical knot, the remaining part of the rope is inserted into the rope body, and a second binding line with a length of 5 cm is inserted and wound at the position of the inserted rope body to prevent the inserted part from being pulled out under stress, and the opening and closing of the eye ring and the spherical knot reduces the use of binding belts and hooks.

2. A marine salvage hoisting line having a warning function as claimed in claim 1, characterized in that The rope body is a single or multi-layer woven rope composed of an eight-strand or twelve-strand structure, and the material of the rope body is one or more of the following: ultra-high molecular weight polyethylene fiber, aramid fiber, liquid crystal polyester fiber, and PBO fiber.

3. A method of manufacturing a marine salvage hoisting rope with a warning effect according to claim 1, characterized in that, The method includes the following steps: S1, preparing a fiber core with a single twisted wire structure, and coating a color developing agent on the surface of the fiber core to form a color developing agent layer; S2, melting and plasticizing an isolation layer outside the color developing agent layer; S3, preparing a first specification twisted wire with a half S twist direction and a Z twist direction from a first predetermined specification fiber, and weaving and covering a flexible armor layer with a weaving structure outside the isolation layer; S4, melting and plasticizing a sheath layer outside the flexible armor layer to obtain an early warning rope core. S5, the second preset specification fiber is made into a second specification twisted wire with S twist direction and Z twist direction, and different numbers of the second preset specification twisted wire are combined to prepare a Z direction strand according to the S twist direction and an S direction strand according to the Z twist direction to form a rope strand; S6, the S twist direction rope strand is loaded in a Z direction spool, the Z twist direction rope strand is loaded in an S direction spool to form an eight-strand or twelve-strand rope body, and a warning rope core is added at the center of each rope strand intersection to obtain a finished product.

4. The method of manufacturing a marine salvage hoisting rope having a warning effect according to claim 3, characterized in that, In step S3, the first preset specification fiber has a specification of 4800-16000D, and the first specification twisted wire has a twist of 20-50T / m; in step S5, the second preset specification fiber has a specification of 15000-32000D, and the second specification twisted wire has a twist of 10-20T / m.

5. A marine salvage hoisting system, characterized in that, The marine salvage hoisting rope with a warning function as claimed in claim 1.

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