End connecting device of mooring rope

Abstract

The utility model discloses an end part connecting device of a mooring rope, which comprises a roller component and a connecting H shackle, the roller component is sleeved in a rope loop at the end part of the mooring rope, the roller component consists of a roller and nests, and the nests are symmetrically arranged in a middle hole of the roller; the H-shaped connecting shackle is composed of a shackle body and a pin shaft, the pin shaft penetrates into the shackle body through holes formed in the two side ends of the shackle body, and the pin shaft penetrates through the nesting sleeve. Load transmission between the cable and the roller can be realized; the roller uniformly extrudes the cable ring, so that uniform contact in the circumferential direction is ensured, and local hard collision is avoided; the nesting sleeve is mounted in the center hole of the roller to form a mechanism capable of rotating around the roller, so that double-layer sliding is realized, and clamping stagnation is prevented; the step protruding out of the side face of the roller prevents friction between the installed shackle body and the side face of the roller in use; by means of the two-layer sleeve, stable load transmission between the mooring rope head and the anchor chain connected with the rear end of the H shackle can be guaranteed, meanwhile, clamping is avoided, and long-term use is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of marine engineering construction, in particular to an end connecting device of a mooring cable. Background Art

[0002] The development of offshore energy is constantly moving towards deep water. It is difficult to use fixed structures when the water depth exceeds 100 meters. Basically, floating structures are used. Whether it is a ship type or a non-ship type (such as cylindrical, octagonal, semi-submersible), mooring is required. The mooring of floating equipment or floating structures can be single-point or multi-point mooring. These mooring systems are generally implemented using multiple sets of mooring lines. Due to the large depth of deep water, the required mooring line is long. If all anchor chains are used, the deadweight will be heavy and difficult to install. At the same time, long-term use of the deadweight will cause the mooring line to sag seriously, and the mooring effect cannot be achieved. Therefore, many mooring lines use a combination of nylon high-strength cables and anchor chains, and the parts in the water that do not contact the mud surface are all lightweight and high-strength non-metallic cables.

[0003] However, non-metallic cables are not wear-resistant, and the continuous movement and swing of the connection with the anchor chain can easily cause the contact area to wear and break. If a roller is installed at the end of the cable, the roller and the shackle position will also be worn, making it difficult to meet long-term safety requirements.

[0004] In order to solve the above problems, we propose an end connection device for a mooring cable. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the utility model provides an end connection device for a mooring rope, and the utility model provides the following technical solutions:

[0006] A mooring cable end connection device comprises a roller assembly and a connecting H shackle, wherein the roller assembly is sleeved in a rope loop at the end of the mooring cable, the roller assembly consists of a roller and a nesting, and the nesting is symmetrically installed in the middle hole of the roller; the connecting H shackle consists of a shackle body and a pin, the shackle body is provided with holes at both ends to allow the pin to be inserted and installed, the pin passes through the nesting, and the end of the pin is fastened by a lock nut.

[0007] Preferably, the roller is a wheel made of forged steel and has a rope groove on the outside. The rope groove width is larger than the diameter of the mooring rope to meet the requirements of embedded installation of the mooring rope.

[0008] Preferably, the nesting is machined and formed by wear-resistant steel, and the nesting has a flange, and the flange protrudes from the side of the roller to avoid friction between the shackle body and the side of the roller, and even if marine organisms adhere, it will not cause jamming; the surface of the nesting is treated with anti-wear to achieve mutual rotation or clearance sliding with the pin shaft to avoid additional torsional resistance when the mooring line swings, and double rotation is achieved by rotating the inside and outside of the nesting to ensure that it will not jam and improve the stability of use

[0009] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0010] This patent achieves load transfer between the cable and the roller by nesting the roller in the rope loop at the end of the mooring cable; the roller evenly squeezes the rope loop to ensure uniform contact in the circumferential direction, good force, and no local hard bumps; a mechanism that can rotate around the roller is formed by installing the nest in the center hole of the roller to achieve double-layer sliding to prevent jamming; the raised step on the side of the roller prevents the installed shackle body from rubbing against the side of the roller during use; the two-layer sleeve form ensures that the mooring cable head can achieve stable load transfer with the anchor chain connected to the rear end of the H shackle, and jamming will not occur, which is stable and reliable for long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used to illustrate the purpose of the preferred embodiment and are not considered to be limitations of the present invention. In the entire drawings, the same reference numerals are used to represent the same parts.

[0012] In the attached picture:

[0013] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the utility model;

[0014] Figure 2 It is a schematic diagram of the composition of the end connection device of the preferred embodiment of the utility model;

[0015] Figure 3 It is a cross-sectional schematic diagram of the end connection device of the preferred embodiment of the utility model.

[0016] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the components is as follows:

[0017] 1. Mooring rope; 2. Roller assembly; 21. Roller; 22. Nesting; 3. Connecting H shackle; 31. Shackle body; 32. Pin shaft; 33. Lock nut. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] Combine the following Figures 1 to 3 An end connection device of a mooring rope according to an embodiment of the utility model is described in detail.

[0021] like Figures 1 to 3 As shown, the mooring rope end connection device includes a roller assembly 2 and a connecting H shackle 3. The roller assembly 2 is sleeved in the rope loop at the end of the mooring rope 1. The roller assembly 2 is composed of a roller 21 and a nesting 22. The roller 21 is a wheel made of forged steel with a middle through hole and a rope groove on the outside. The rope groove width is slightly larger than the diameter of the mooring rope 1, which meets the requirements of embedding and installation of the mooring rope 1. Two symmetrical nestings 22 with flanges are installed in the middle hole of the roller 21, which can be inserted into the hole from both sides. The hole of the nesting 22 meets the requirements of the pin 32 of the connecting H shackle 3 to pass through. The flange of the nesting 22 protrudes from the side of the roller 21 to avoid friction between the installed shackle body 31 and the side of the roller 21. The nesting 22 is made of wear-resistant steel machined and has an anti-wear treatment on the surface, so that it can rotate with the pin 32 or slide in the gap to avoid additional torsional resistance when the mooring line swings. The double rotation is achieved by rotating the nesting 22 inside and outside, ensuring that it will not get stuck and improving the stability of use. The connecting H shackle 3 connects the mooring anchor chain and the mooring cable 1, and is the core component of the mooring load transmission. The connecting H shackle 3 consists of a shackle body 31, a pin shaft 32 at one end and a lock nut 33 locked thereon. The shackle body 31 is forged to form grooves at both ends, and holes are drilled on the side to meet the installation of the pin shaft 32. In order to prevent possible scratches on the moving parts, the structure is rounded, which also effectively reduces stress and ensures long-term stability. The holes at both ends are installed with pin shafts 32, and the lock nut 33 is installed after passing through to form a connection with the roller assembly 2 or the anchor chain at the other end.

[0022] The installation steps of the mooring rope end connection device are as follows:

[0023] Step 1: According to different mooring line loads, select the specifications of the mooring rope 1 and the connecting anchor chain, determine the size of the roller 21 according to the diameter, bending radius and load bearing capacity of the mooring rope 1, select matching materials for processing, and correspondingly determine the structural size and material grade of the connecting H shackle 3 to meet the load transfer requirements; purchase materials according to the design, and complete the manufacturing of the roller 21, nesting 22, shackle body 31, pin 32 and lock nut 33;

[0024] Step 2: Insert the mooring rope 1 into the roller 21, and then insert the two nests 22 from the side of the middle hole of the roller 21, with the flanged step outside, to complete the installation; then clamp the shackle body 31 on the outside of the flange of the nest 22, insert the pin 32, so that the roller assembly 2 is connected to one end of the shackle body 31, tighten the lock nut 33 and take necessary anti-slip measures to complete the connection of the mooring rope 1 end.

[0025] Step 3: During offshore construction, the mooring chain has been installed. At this time, the tail end of the mooring chain is pulled to the deck of the construction ship, and the anchor chain ring is connected to the other end of the shackle body 31 by means of a latch or a shackle. Then, the anchor chain is lowered, and then the mooring rope 1 is lowered successively until all are in the water. The anchor chain at the other end is connected with the above operation to complete the installation.

[0026] Step 4: During normal mooring use, due to the movement of the mooring buoy 1 — mooring rope and anchor chain will swing. At this time, 2.1 — roller and 1 — rope loop pressed by the mooring rope rotate together around 3.1 — pin of the shackle body 3.2 to achieve load transfer to the mooring line without torsional damage.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A mooring cable end connection device, comprising a roller assembly (2) and a connecting H shackle (3), characterized in that: The roller assembly (2) is sleeved in the rope loop at the end of the mooring rope (1), and the roller assembly (2) is composed of a roller (21) and a nesting (22), and the nesting (22) is symmetrically installed in the middle hole of the roller (21); the connecting H shackle (3) is composed of a shackle body (31) and a pin (32), and the shackle body (31) is provided with holes at both ends to enable the pin (32) to be inserted and installed, and the pin (32) passes through the nesting (22), and the end of the pin (32) is fastened by a lock nut (33).

2. The end connection device of a mooring rope according to claim 1, characterized in that: The roller (21) is a wheel made of forged steel and has a rope groove on the outside.

3. The end connection device of a mooring rope according to claim 1, characterized in that: The nest (22) is machined and formed using wear-resistant steel, and the nest (22) has a flange, and the flange protrudes from the side of the roller (21).

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