I-shaped shackle used in mooring line

Abstract

The utility model provides an I-shaped shackle used in a mooring line, which belongs to the technical field of ocean equipment and comprises an I-shaped body made of carbon fiber reinforced composite materials and two force bearing pins made of carbon fiber reinforced composite materials, and the two force bearing pins respectively penetrate through two ends of the I-shaped body from top to bottom and are locked in an anti-falling mode through anti-falling pins. The device is simple in structure, has the excellent characteristics of low specific gravity, high specific strength, high specific modulus, corrosion resistance and the like, is low in cost and is suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of marine equipment, in particular to an I-shaped shackle used in a mooring line. Background Art

[0002] Shackles are critical connecting components in permanent offshore mooring systems. Currently, shackles are made of high-strength mooring chain steel, with lengths, widths, and heights ranging from 800-900 mm, 350-400 mm, and 250-300 mm, respectively, and weighing between 3,000 and 4,000 kg. Such large size and weight are not only expensive but also inconvenient to transport and install, resulting in high operating costs. Shackles operate underwater and are constantly subject to seawater corrosion. As permanent mooring components, shackles are typically required to have a service life of 15-30 years, while conventional anti-corrosion measures such as coatings are generally effective for only 5-10 years. This creates a high risk of corrosion failure in mid- to late-life shackles, posing a significant threat to the safety of the entire mooring system. Steel shackles are susceptible to fouling organisms, requiring in-service inspections to remove these organisms first, which is inefficient. Scraping away these organisms, such as shellfish, can easily damage the shackles, weakening their strength and accelerating corrosion. Utility Model Content

[0003] In view of this, in order to solve the problems of shackles such as heavy weight, high price, inconvenient transportation, and short service life, an embodiment of the present invention provides an I-type shackle for use in a mooring line.

[0004] The embodiment of the present utility model provides a type shackle for use in a mooring line, comprising:

[0005] An I-shaped body made of carbon fiber reinforced composite material, comprising an upper plate, a lower plate, and a connecting plate, wherein the connecting plate is located between the upper plate and the lower plate and is used to connect the two, a first load-bearing pin hole is provided at each end of the upper plate, a second load-bearing pin hole is provided at each end of the lower plate, and the two first load-bearing pin holes correspond one-to-one to the two second load-bearing pin holes;

[0006] And two load-bearing pins made of carbon fiber reinforced composite material, the lower end of each load-bearing pin passes through the first load-bearing pin hole and the corresponding second load-bearing pin hole from top to bottom and extends to the bottom, the upper end of each load-bearing pin is provided with a chuck, and the lower end is provided with an anti-slip pin hole, each of the chucks is resting on the upper end surface of the corresponding end of the upper plate body, each of the anti-slip pin holes is located below the corresponding end of the lower plate body and is inserted with an anti-slip pin, and each of the anti-slip pins is resting against the lower plate body.

[0007] Furthermore, each of the load-bearing pins is a solid cylinder.

[0008] Furthermore, the upper plate body, the lower plate body, and the connecting plate are integrally formed with each other.

[0009] Furthermore, the upper and lower ends of the connecting plate are chamfered at their connections with the upper plate body and the lower plate body respectively.

[0010] Furthermore, the two ends of the upper plate are semicircular in shape.

[0011] Furthermore, the two ends of the lower plate are semicircular in shape.

[0012] The technical solution provided by the embodiments of the present utility model has the following beneficial effects: carbon fiber reinforced composite materials have excellent properties such as low specific gravity, high specific strength, high specific modulus, and corrosion resistance. The I-shaped shackle described in this patent is not only lightweight, easy to carry, and simple to install, but also resistant to seawater corrosion and will not be damaged by corrosion. It can also resist the attachment of marine organisms, eliminating the need to clean attached marine organisms during in-service inspection, thereby improving inspection efficiency and reducing operation and maintenance costs. The above advantages of the carbon fiber I-shaped shackle can reduce the overall cost of permanent offshore mooring systems to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of an I-type shackle used in a mooring line in the utility model;

[0014] Figure 2 yes Figure 1 Top view of .

[0015] In the figure: 1-I-shaped body, 2-load-bearing pin, 3-upper plate, 4-connecting plate, 5-load-bearing pin hole, 6-chuck, 7-anti-drop pin hole, 8-lower plate. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0017] Please refer to Figure 1 and Figure 2 An embodiment of the present utility model provides an I-shaped shackle for a mooring line, comprising an I-shaped body 1 and two bearing pins 2.

[0018] In this embodiment, the I-shaped body 1 is made of carbon fiber reinforced composite material, which has excellent properties such as low specific gravity, high specific strength, high specific modulus, and corrosion resistance. The I-shaped body 1 includes an upper plate body 3, a lower plate body 8, and a connector 4, wherein the connector 4 is located between the upper plate body 3 and the lower plate body 8, and the upper end of the connector 4 is fixedly connected to the lower end face of the upper plate body 3, and the lower end of the connector 4 is fixedly connected to the upper end face of the lower plate body 8. It should be noted here that in order to enhance stability, the connecting plate 4 is integrally formed with the upper plate body 3 and the lower plate body 8, and the connection between the upper end of the connecting plate 4 and the upper plate body 3 is chamfered, and the connection between the lower end of the connecting plate 4 and the lower plate body 8 is also chamfered.

[0019] Furthermore, the two ends of the upper plate body 3 are semicircular, and the two ends of the lower plate body 8 are also semicircular, and the two ends of the upper plate body 3 and the lower plate body 8 are respectively provided with load-bearing pin holes 5. In this embodiment, for the sake of convenience of explanation, the two load-bearing pin holes 5 on the upper plate body 3 are referred to as first load-bearing pin holes, and the two load-bearing pin holes 5 on the lower plate body 8 are referred to as second load-bearing pin holes, and the two first load-bearing pin holes correspond one to one with the two second load-bearing pin holes and are coaxial.

[0020] The two load-bearing pins 2 correspond to the two first load-bearing pin holes respectively. Each load-bearing pin 2 is a solid cylinder and is made of carbon fiber reinforced composite material. It also has excellent properties such as low specific gravity, high specific strength, high specific modulus, and corrosion resistance. The lower end of each load-bearing pin 2 passes through a first load-bearing pin hole and a corresponding second load-bearing pin hole from top to bottom and extends to the bottom. A chuck 6 is provided at the upper end of each load-bearing pin 2, and each chuck 6 is against the upper end surface of the upper plate body 3. An anti-slip pin hole 7 is provided at the lower end of each load-bearing pin 2, and each anti-slip pin hole 7 is located below the lower end surface of the lower plate body 8. An anti-slip pin is inserted in each anti-slip pin hole 7, and each anti-slip pin is against the lower end surface of the lower plate body 8.

[0021] The working principle of a type I shackle used in a mooring line in this embodiment is as follows: the type I shackle is a connector embedded in the mooring line, connecting the mooring line at both ends to form a complete mooring line to withstand the mooring load. To connect the type I shackle, first pull the mooring line at one end into the slot formed by the upper and lower plates and the connecting plate. Then align the end link of the mooring chain or the end loop of the fiber cable with the load-bearing pin holes 5 on the upper and lower plates. Then, insert the load-bearing pin 2, and finally the anti-drop pin. The other end of the mooring chain is connected using the same procedure.

[0022] In this document, directional terms such as front, back, top, and bottom are defined based on the positions of components in the accompanying drawings and relative to each other, and are intended only for clarity and convenience in describing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0023] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A type shackle for use in a mooring line, characterized in that: include: An I-shaped body made of carbon fiber reinforced composite material, comprising an upper plate, a lower plate, and a connecting plate, wherein the connecting plate is located between the upper plate and the lower plate and is used to connect the two, a first load-bearing pin hole is provided at each end of the upper plate, a second load-bearing pin hole is provided at each end of the lower plate, and the two first load-bearing pin holes correspond one-to-one to the two second load-bearing pin holes; And two load-bearing pins made of carbon fiber reinforced composite material, the lower end of each load-bearing pin passes through the first load-bearing pin hole and the corresponding second load-bearing pin hole from top to bottom and extends to the bottom, the upper end of each load-bearing pin is provided with a chuck, and the lower end is provided with an anti-slip pin hole, each of the chucks is resting on the upper end surface of the corresponding end of the upper plate body, each of the anti-slip pin holes is located below the corresponding end of the lower plate body and is inserted with an anti-slip pin, and each of the anti-slip pins is resting against the lower plate body.

2. The I-shaped shackle for a mooring line according to claim 1, characterized in that: Each of the load-bearing pins is a solid cylinder.

3. The I-shaped shackle for a mooring line according to claim 1, characterized in that: The upper plate body, the lower plate body, and the connecting plate are integrally formed with each other.

4. The I-shaped shackle for a mooring line according to claim 1, characterized in that: The upper and lower ends of the connecting plate are chamfered at the connections with the upper plate body and the lower plate body respectively.

5. The I-shaped shackle for use in a mooring line according to claim 1, characterized in that: The two ends of the upper plate body are semicircular in shape.

6. The I-shaped shackle for a mooring line according to claim 1, characterized in that: The two ends of the lower plate are semicircular in shape.

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