Anti-jamming cable and mooring device

Abstract

This invention discloses an anti-jamming cable, comprising a sheath portion and a core portion. The core portion is composed of multiple strands of nylon rope, and the sheath portion is woven from multiple strands around the core portion. The strands are made of high molecular weight polyethylene, aramid, or polyaramid resin, and the lay length of the strands is less than that of the nylon rope, so that when the cable breaks, the elongation at break of the sheath portion is close to that of the core portion. This invention also discloses a mooring device, comprising the aforementioned cable and a winch. The winch includes a base, a winch disc, and a first power mechanism. The winch disc is rotatably connected above the base, and one end of the cable is wound around the winch disc. The first power mechanism can drive the winch disc to wind or release the cable. This invention proposes an anti-jamming cable and a mooring device that reduce the rebound amplitude after cable breakage and reduce the change in the outer diameter of the cable under stress.

Description

Technical Field

[0001] This invention relates to the field of mooring equipment technology, and more particularly to an anti-jamming cable and mooring equipment. Background Technology

[0002] Domestic and foreign container ships need to use mooring devices to dock at the pier. The existing mooring devices include winches and cables. One end of the cable is connected to the dock's connecting pile, and the other end of the cable is wound in an orderly manner on the winch to form multiple rope loops.

[0003] Existing cables are often made of nylon, a material with good elasticity that can effectively absorb the kinetic energy of a ship's drift. However, when these cables break, the rebound is significant, posing a risk of personal injury. In particular, when under tension, the cable's diameter decreases, making it prone to getting stuck in the gaps between the rope coils on the winch, causing a jam. A jammed cable is forcibly compressed and deformed, disrupting its stress mechanism and severely impacting its designed load-bearing capacity. Summary of the Invention

[0004] To address the shortcomings of existing cables, such as large rebound amplitude after breakage and easy cable jamming due to diameter reduction under stress, this invention proposes an anti-jamming cable and mooring device to reduce the rebound amplitude after cable breakage and reduce the change in the outer diameter of the cable under stress.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anti-jamming cable includes a sheath portion and a core portion. The core portion is composed of multiple strands of nylon rope, and the sheath portion is woven around the core portion by multiple strands of material, which are made of high molecular weight polyethylene, aramid, or polyaramid. The twist pitch of the strands is smaller than that of the nylon rope, so that when the cable breaks, the breaking elongation of the sheath portion is close to that of the breaking elongation of the core portion.

[0007] The above settings achieve the following: First, they improve the abrasion resistance of the cable, thereby enhancing its reliability; second, they reduce the cable's rebound amplitude, thus improving safety; and third, the cable's outer diameter changes less under stress, making it less prone to jamming.

[0008] Furthermore, the number of strands in the rope loop is greater than or equal to 8.

[0009] Furthermore, the nylon rope in the core has at least 3 strands, which can be 3, 4, 6, 8, or 12 strands.

[0010] A mooring device includes the aforementioned cable and a winch; the winch includes a base, a winch disc, and a first power mechanism, the winch disc being rotatably connected above the base, one end of the cable being wound around the winch disc, and the first power mechanism being able to drive the winch disc to wind or release the cable.

[0011] Furthermore, the winch also includes a cable laying mechanism, which comprises: a support plate, a reciprocating screw, a mating part, and a second power mechanism; the support plate is fixedly connected to the upper side of the base; the reciprocating screw is arranged parallel to the winch, and the end of the reciprocating screw is rotatably connected to the support plate; the mating part is sleeved on the reciprocating screw and engages with the reciprocating screw, and the mating part is provided with a rope threading hole through which the cable passes; the second power mechanism is mounted on the support plate, and the second power mechanism can drive the reciprocating screw, causing the mating part to reciprocate along the axis of the reciprocating screw, so that the cable is wound in layers on the winch, and in two adjacent layers of cable, the outer layer of cable crosses the inner layer of cable, and the angle between the outer layer of cable and the inner layer of cable is not less than 30 degrees.

[0012] With the above settings, firstly, the cable winding mechanism can orderly wind the cable onto the winch; secondly, the angle between the inner and outer layers of cable is relatively large, further preventing cable jamming.

[0013] Furthermore, the cable laying mechanism also includes rollers, with two rollers rotatably connected in the rope hole. Annular grooves are provided along the circumference of the rollers, and the cable passes between the rollers, with the side of the cable engaging in the annular grooves to prevent the cable from separating from the rollers.

[0014] The above settings prevent the cable from rubbing against the hole wall and protect the outer surface of the cable.

[0015] Furthermore, the mating part includes a mating body and a sliding seat. A rope hole is provided on the sliding seat, and a groove is provided on the sliding seat. The extension direction of the groove is parallel to the reciprocating screw. The mating body is slidably connected in the groove. The reciprocating screw passes through the mating body and engages with the mating body. The mating part also includes a first locking mechanism that can lock the mating body in the groove. The cable laying mechanism also includes a support rod, which is arranged parallel to the reciprocating screw. The support rod passes through the sliding seat and is slidably connected with the sliding seat. The cable laying mechanism also includes a second locking mechanism that can lock the sliding seat on the support rod.

[0016] The above settings can prevent the reciprocating lead screw from being damaged by tension.

[0017] Furthermore, the winch also includes a damping mechanism, which comprises: a lower friction plate, an upper friction plate, a mounting shaft, a support plate, bolts, and a rotating shaft; the lower friction plate is fixedly connected to the upper side of the sliding seat; the upper friction plate is positioned above the lower friction plate; the mounting shaft passes through the upper friction plate and is slidably connected to it, and the mounting shaft can drive the upper friction plate to rotate; the support plate is fixedly connected to the upper end of the mounting shaft; the bolts are threadedly connected to the support plate, and the lower end of the bolts presses against the upper friction plate to make the upper friction plate contact the lower friction plate; the rotating shaft is coaxially fixedly connected between the mounting shaft and the roller, and the roller is rotatably connected to the rope hole through the rotating shaft.

[0018] With the above settings, firstly, the damping mechanism can increase the rotational resistance of the roller, prevent the cable between the roller and the winch from slackening, thereby preventing the cable on the winch from loosening, and thus preventing the included angle of the cables in adjacent layers from becoming smaller, so that the cables in adjacent layers always maintain a large included angle; secondly, the damping mechanism can adjust the resistance, and when releasing the cable, the resistance can be reduced to facilitate the release of the cable. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the cable used in an embodiment.

[0020] Figure 2 for Figure 1 AA sectional view.

[0021] Figure 3 This is a top sectional view of the mooring device in an embodiment.

[0022] Figure 4 for Figure 3 BB cross-sectional view.

[0023] Figure 5 for Figure 4 Enlarged view of point C. Detailed Implementation

[0024] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0025] See Figure 1 and Figure 2 A cable includes a sheath portion 31 and a core portion 32. The core portion 32 is composed of multiple strands of nylon rope, and the sheath portion 31 is woven around the core portion 32 by multiple strands of bar. The bar is made of high molecular weight polyethylene, aramid, or polyaramid. The twist pitch of the bar is smaller than that of the nylon rope, so that when the cable 3 breaks, the breaking elongation of the sheath portion 31 is close to the breaking elongation of the core portion 32.

[0026] As one implementation, the number of strands in the rope loop 31 is greater than or equal to 8. Specifically, it can be set to 8 strands, 12 strands, or other numbers.

[0027] As one implementation, the nylon rope in the rope core 32 has at least three strands. Specifically, it can be set to three, four, six, eight, or twelve strands, or other numbers of strands. Alternatively, the rope core can also be composed of multi-strand braided rope or a parallel structure.

[0028] See Figures 1 to 5A mooring device includes: the aforementioned cable 3 and a winch; the winch includes a base 41, a winch 42 and a first power mechanism 43, the winch 42 is rotatably connected above the base 41, one end of the cable 3 is wound around the winch 42, and the first power mechanism 43 can drive the winch 42 to wind or release the cable 3.

[0029] Through the above settings, firstly, the wear resistance of the cable 3 can be improved, thereby enhancing the reliability of the cable 3; secondly, the rebound amplitude of the cable 3 can be reduced to improve safety; and thirdly, the outer diameter of the cable 3 changes less after being subjected to force, making it less prone to jamming.

[0030] In this application, the strand material can be high molecular weight polyethylene, aramid, or polyaramid. In reality, the strand material is high molecular weight polyethylene, and the nylon rope material is nylon. When both the strand and the nylon rope extend in a straight line, the elongation at break of the strand after being stressed is less than that of the nylon rope, and the springback amplitude after the strand breaks is less than that of the nylon rope. After the strand is woven into the rope sleeve 31, firstly, the twist pitch of the strand decreases, and the elongation at break of the rope sleeve 31 after being stressed increases. When the elongation at break of the rope sleeve 31 approaches that of the rope core 32... At the breaking elongation, when the cable 3 breaks, the rope sleeve 31 and the rope core 32 break almost simultaneously, making full use of the tensile strength of the rope core 32 and the rope sleeve 31, maximizing the tensile strength of the cable 3. Second, the strands form a tight protective layer on the outside of the rope core 32, protecting the rope core 32 and improving wear resistance. The change in the outer diameter of the cable 3 after being stressed is small, making it less prone to jamming. Third, when the cable 3 breaks, the rope sleeve 31 woven from the strands can suppress the rebound of the rope core 32, thereby reducing the overall rebound amplitude of the cable 3 and improving safety. The first power mechanism 43 can be an electric motor. When the motor drives the winch 42, the winch 42 winds the cable 3. When the ship needs to berth, the motor drives the winch 42, the winch 42 releases the cable 3, and the free end of the cable 3 is connected to the dock's connecting pile, completing the ship's mooring.

[0031] As one implementation, the winch also includes a cable laying mechanism 44, which includes: a support plate 441, a reciprocating screw 442, a mating part 443, and a second power mechanism 444. The support plate 441 is fixedly connected to the upper side of the base 41. The reciprocating screw 442 is arranged parallel to the winch 42, and the end of the reciprocating screw 442 is rotatably connected to the support plate 441. The mating part 443 is sleeved on the reciprocating screw 442 and cooperates with the reciprocating screw 442. The 43 is provided with a rope hole 5, through which the cable 3 passes; the second power mechanism 444 is installed on the support plate 441, and the second power mechanism 444 can drive the reciprocating screw 442 to make the mating part 443 reciprocate along the axis of the reciprocating screw 442 so that the cable 3 is wound in layers on the winch 42. In two adjacent layers of cable 3, the outer layer of cable 3 crosses the inner layer of cable 3, and the included angle α between the outer layer of cable 3 and the inner layer of cable 3 is not less than 30 degrees.

[0032] With the above settings, firstly, the cable winding mechanism 44 can orderly wind the cable 3 onto the winch 42; secondly, the angle between the inner and outer layers of cable 3 is relatively large, further preventing the occurrence of cable jamming.

[0033] In this application, two support plates 441 are provided, supporting both ends of the reciprocating screw 442 to improve its stability. The reciprocating screw 442 can be purchased commercially. The second power mechanism 444 can be a motor. The first power mechanism 43 drives the winch 42, and the cable 3 passes through the rope hole 5 and is wound around the winch 42. At the same time, the second power mechanism 444 drives the reciprocating screw 442. After the mating part 443 and the reciprocating screw 442 rotate relative to each other, the mating part 443 moves back and forth along the reciprocating screw 442, so that the cable 3 is wound layer by layer around the winch 42. The width of the movement range of the mating part 443 is basically equal to the length of the winch 42, so that the cable 3 can be basically wound around the entire winch 42. In this application, the movement speed of the mating part 443 is relatively fast, and the included angle between adjacent layers of cable 3 is relatively large. For details, see [link to relevant documentation]. Figure 3 The angle between the extension direction of cable 3 near the middle of winch 42 and the extension direction of cable 3 in the adjacent layer is not less than 30 degrees. At this time, the gap between cable 3 and cable 3 in the inner adjacent layer is staggered, and cable 3 is less likely to get stuck after being stressed.

[0034] As one implementation, the cable laying mechanism 44 also includes rollers 445. Two rollers 445 are rotatably connected in the rope hole 5. An annular groove is provided along the circumference of the rollers 445. The cable 3 passes through the rollers 445, and the side of the cable 3 is inserted into the annular groove to prevent the cable 3 from separating from the rollers 445.

[0035] The above settings can prevent the cable 3 from rubbing against the hole wall of the cable hole 5 and protect the outer surface of the cable 3.

[0036] In this application, when the winch 42 releases or winds the cable 3, the cable 3 drives the roller 445 to rotate. The roller 445 supports the opposite sides of the cable 3 to prevent the cable 3 from swaying left and right. The annular groove locks the cable 3 to prevent the cable 3 from moving up and down and disengaging from the roller 445.

[0037] In one implementation, the mating part 443 includes a mating body 4431 and a sliding seat 4432. A rope hole 5 is provided on the sliding seat 4432, and a groove 6 is provided on the sliding seat 4432. The extension direction of the groove 6 is parallel to the reciprocating screw 442. The mating body 4431 is slidably connected in the groove 6. The reciprocating screw 442 passes through the mating body 4431 and mats with it. The mating part 443 also includes a first locking mechanism 4433 that can lock the mating body 4431 in the groove 6. The cable laying mechanism 44 also includes a support rod 446, which is arranged parallel to the reciprocating screw 442. The support rod 446 passes through the sliding seat 4432 and is slidably connected to it. The cable laying mechanism 44 also includes a second locking mechanism 447 that can lock the sliding seat 4432 on the support rod 446.

[0038] The above settings can prevent the reciprocating lead screw 442 from being damaged by tension.

[0039] In this application, there are two support rods 446, with both ends of the support rods 446 respectively mounted on the support plate 441. Reinforcing ribs are welded between the support plate 441 and the base 41 to enhance the strength of the support plate 441. Initially, the first locking mechanism 4433 locks the cooperating body 4431 in the slide groove 6, and the second locking mechanism 447 unlocks, allowing the sliding seat 4432 to slide along the support rod 446. When winding or releasing the cable 3, the reciprocating screw 442 rotates, and the cooperating body 4431 and the sliding seat 4432 synchronously move along the reciprocating screw. 442 reciprocating motion; when the ship is moored at the dock, the first locking mechanism 4433 unlocks, and the cooperating body 4431 can slide freely in the slide groove 6. The second locking mechanism 447 locks the sliding seat 4432 onto the support rod 446. When wind and waves come, the force of the cable 3 can be transmitted to the base 41 through the roller 445, the sliding seat 4432, the second locking mechanism 447, the support rod 446, and the support plate 441, reducing the force on the cooperating body 4431 and the reciprocating screw 442, and preventing damage to the reciprocating screw 442 and the cooperating body 4431.

[0040] In one implementation, the first locking mechanism 4433 is configured as a first threaded component, which is threadedly connected to the upper side of the sliding seat 4432, and the lower end of the first threaded component contacts the mating body 4431. After tightening the first threaded component, the first threaded component presses against the mating body 4431 to lock the mating body 4431 in the slide groove 6. After loosening the first threaded component, the first threaded component disengages from the mating body 4431, and the mating body 4431 can slide along the slide groove 6.

[0041] In one implementation, multiple slots 4461 are sequentially arranged along the extension direction of the support rod 446. The second locking mechanism 447 is configured as a second threaded component, which is threadedly connected to the sliding seat 4432. The second threaded component is inserted into one of the slots 4461 to lock the sliding seat 4432 onto the support rod 446. After loosening the second threaded component, it can leave the slot 4461, and the sliding seat 4432 can slide freely along the support rod 446.

[0042] As one implementation, the winch also includes a damping mechanism 7, which includes: a lower friction plate 71, an upper friction plate 72, a mounting shaft 73, a mounting plate 76, a bolt 74, and a rotating shaft 75; the lower friction plate 71 is fixedly connected to the upper side of the sliding seat 4432; the upper friction plate 72 is disposed on the upper side of the lower friction plate 71; the mounting shaft 73 passes through the upper friction plate 72 and is slidably connected to the upper friction plate 72, and the mounting shaft 73 can drive the upper friction plate 72 to rotate; the mounting plate 76 is fixedly connected to the upper end of the mounting shaft 73; the bolt 74 is mounted to the support plate 441 and the mounting plate 76, and the lower end of the bolt 74 presses against the upper friction plate 72 so that the upper friction plate 72 contacts the lower friction plate 71; the rotating shaft 75 is coaxially fixedly connected between the mounting shaft 73 and the roller 445, and the roller 445 is rotatably connected to the rope hole 5 through the rotating shaft 75.

[0043] With the above settings, firstly, the damping mechanism 7 can increase the rotational resistance of the roller 445, prevent the cable 3 between the roller 445 and the winch 42 from slackening, thereby preventing the cable 3 on the winch 42 from loosening, and thus preventing the included angle of the cables 3 of adjacent layers from becoming smaller, so that the cables 3 of the two adjacent layers always maintain a large included angle; secondly, the damping mechanism 7 can adjust the resistance, and when releasing the cable 3, the resistance can be reduced so that the cable 3 can be released.

[0044] In this application, the cross-section of the mounting shaft 73 is square, so that the mounting shaft 73 can drive the upper friction plate 72 to rotate synchronously. The bolt 74 presses the upper friction plate 72 onto the lower friction plate 71. When the roller 445 rotates, the roller 445 drives the upper friction plate 72 to rotate through the rotating shaft 75 and the mounting shaft 73. The lower friction plate 71 applies resistance to the roller 445 through the upper friction plate 72. The tighter the bolt 74, the greater the friction between the upper friction plate 72 and the lower friction plate 71, and the greater the resistance of the roller 445. Conversely, the looser the bolt 74, the smaller the resistance.

[0045] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A mooring device, characterized in that, This includes anti-jamming cables and winches; The anti-jamming cable includes a sheath and a core. The core is composed of multiple strands of nylon rope, and the sheath is woven around the core with multiple strands. The strands are made of high molecular weight polyethylene, aramid, or polyaramid. The twist of the strands is smaller than that of the nylon rope, so that when the cable breaks, the elongation at break of the sheath is close to that of the core. The winch includes a base, a winch, and a first power mechanism. The winch is rotatably connected above the base, and one end of the cable is wound around the winch. The first power mechanism can drive the winch to wind or release the cable. The winch further includes a cable-laying mechanism, which includes: A support plate, which is fixedly connected to the upper side of the base; A reciprocating lead screw, which is arranged parallel to the winch, and the end of the reciprocating lead screw is rotatably connected to the support plate; The mating part is sleeved on the reciprocating lead screw and mates with the reciprocating lead screw. The mating part is provided with a rope hole through which the cable passes. The second power mechanism is mounted on the support plate and can drive the reciprocating screw to make the mating part reciprocate along the axis of the reciprocating screw so that the cable is wound in layers on the winch. The mating part includes a mating body and a sliding seat. The rope hole is provided on the sliding seat, and the sliding seat is provided with a sliding groove. The extending direction of the sliding groove is parallel to the reciprocating lead screw. The mating body is slidably connected in the sliding groove. The reciprocating lead screw passes through the mating body and engages with the mating body. The mating part also includes a first locking mechanism that can lock the mating body in the sliding groove. The cable routing mechanism further includes a support rod, which is arranged parallel to the reciprocating lead screw. The support rod passes through the sliding seat and is slidably connected to the sliding seat. The cable routing mechanism also includes a second locking mechanism that can lock the sliding seat onto the support rod.

2. The mooring device according to claim 1, characterized in that, In two adjacent layers of cables, the outer cable crosses the inner cable, and the angle between the outer cable and the inner cable is not less than 30 degrees.

3. A mooring device according to claim 2, characterized in that, The cable laying mechanism also includes rollers, and two rollers are rotatably connected in the rope hole. An annular groove is provided along the circumference of the rollers. The cable passes through the rollers, and the side of the cable is inserted into the annular groove to prevent the cable from separating from the rollers.

4. A mooring device according to claim 3, characterized in that, The winch further includes a damping mechanism, which comprises: The lower friction plate is fixedly connected to the upper side of the sliding seat; An upper friction plate is disposed on the upper side of the lower friction plate; The mounting shaft passes through the upper friction plate and is slidably connected to the upper friction plate, and the mounting shaft can drive the upper friction plate to rotate; Mounting plate, which is fixedly connected to the upper end of the mounting shaft; A bolt is threadedly connected to the mounting plate, and the lower end of the bolt presses against the upper friction plate so that the upper friction plate contacts the lower friction plate; A rotating shaft is coaxially and fixedly connected between the mounting shaft and the roller, and the roller is rotatably connected in the rope hole through the rotating shaft.

5. A mooring device according to claim 1, characterized in that, The number of strands in the rope loop is greater than or equal to 8.

6. A mooring device according to claim 1, characterized in that, The nylon rope in the core of the rope has 3 or more strands, and the number of strands of the nylon rope can be 3, 4, 6, 8 or 12.

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