Composite torpedo anchor based on bionics and installation method thereof

A bionic, composite technology, applied in anchor points, transportation and packaging, ship parts, etc., can solve problems such as insufficient technological innovation of interface friction coefficient, and achieve enhanced pullout bearing capacity, reduced end resistance, and high pullout resistance. The effect of bearing capacity and stability

Active Publication Date: 2020-12-18
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing methods mainly focus on improving the contact area between the anchor body and the seabed soil, but the technical innovations in the aspects of the anchor material and the interface friction coefficient between the anchor body material and the seabed soil are still relatively insufficient; therefore, based on bionics It is particularly important to develop a technical solution for a composite torpedo anchor and its installation method.

Method used

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  • Composite torpedo anchor based on bionics and installation method thereof
  • Composite torpedo anchor based on bionics and installation method thereof
  • Composite torpedo anchor based on bionics and installation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0041] A composite torpedo anchor based on bionics, which consists of a working anchor chain 1, a main steel strand 2, an anchor rod 3, an empennage 4, an anchor tip 5, a transverse anchor plate 6, a limiting collar 7, a safety spring 8, and an anchor point 9 and 10 sub-strands. Described transverse anchor plate 6, each layer of transverse anchor plate 6 is connected with anchor bar 3 by 6~8 fan-shaped arc plates through rotating shaft 12, torsion spring 11 and branch steel strand 10. Wherein the rotating shaft 12 is covered with a compression torsion spring 11, and the maximum rotation limiting angle is 90°. The main steel strand 2 is embedded in the groove on the outer wall of the anchor rod, and the upper end bypasses the guide pulley 13 to connect to the working anchor chain 1, and connects to each layer of restricting collars 7 in sequence downwards, and its sub-wires bypass the rotating shaft to connect to the outer anchor point of the anchor disc 6 9. A safety spring ...

Embodiment 2

[0043] According to the installation method of a bionics-based composite torpedo anchor according to the present invention, at first, the form of the anchor point 5 is optimally designed based on the bionics principle of the kingfisher peck, and its shape is as formula (1) (unit: dm):

[0044]

[0045] In the formula, x is the radius dimension of the anchor tip, and y is the length dimension of the anchor tip.

[0046] Secondly, in combination with the properties of the seabed soil, a transverse anchor plate 6 is assembled on the anchor body according to the design requirements. The length of the anchor rod 3 is 12.5m, the diameter of the anchor rod 3 is 0.75m, the width of the empennage 4 is 0.5m, the length of the empennage 4 is 1 / 3 of the anchor length, the thickness of the empennage 4 is 0.07m, and the length of the anchor tip 5 is determined according to formula (1). , Add 1 to 5 pieces of honeycomb metal negative Poisson's ratio material. In this embodiment, the overa...

Embodiment 3

[0052] According to the installation method of a bionics-based composite torpedo anchor according to the present invention, at first, the form of the anchor point 5 is optimally designed based on the bionics principle of the kingfisher peck, and its shape is as formula (1) (unit: dm):

[0053]

[0054] In the formula, x is the radius dimension of the anchor tip, and y is the length dimension of the anchor tip.

[0055] Secondly, in combination with the properties of the seabed soil, three transverse anchor plates 6 are assembled on the anchor body according to the design requirements. The length of the anchor rod 3 is 15.0m, the diameter of the anchor rod 3 is 1.20m, the width of the empennage 4 is 1.5m, the length of the empennage 4 is 2 / 3 of the anchor length, the thickness of the empennage 4 is 0.08m, and the length of the anchor tip 5 is according to the formula (1) Determined, add 1 to 5 pieces of honeycomb metal negative Poisson's ratio material 0.03m.

[0056] Next,...

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Abstract

The invention discloses a composite torpedo anchor based on bionics and an installation method thereof. The composite torpedo anchor comprises an anchor tip, an anchor rod, an anchor wing, transverseanchor discs, a safety spring, a limiting lantern ring, a main steel strand, a working anchor chain and a branch steel strand. According to the composite torpedo anchor based on bionics and the installation method thereof, the shape of the anchor tip is designed through bionics, and resistance in the installation and penetration process is reduced; the bearing capacity of the anchor wing is improved by utilizing the characteristics of compression shrinkage and tension expansion of a negative poisson ratio material; the soil body between anchor disc layers and an anchor body form a whole by opening the transverse anchor discs, and the uplift bearing capacity of the anchor body is improved; and a multi-layer transverse anchor disc opening device is easy to manufacture, no extra power sourceexists in the tensioning process, operation is easy, and the installation penetration depth, the uplift bearing capacity and the stability of the torpedo anchor are improved.

Description

technical field [0001] The invention belongs to the technical field of deep-sea mooring, and in particular relates to a composite torpedo anchor based on bionics and an installation method thereof. Background technique [0002] With the rapid development of the economy, the energy reserves near the coast can no longer meet people's increasing energy demand. Therefore, offshore energy extraction has gradually advanced to the deep sea. According to incomplete statistics, 70% of the world's oil and gas reserves are in the deep sea with a water depth exceeding 500m. my country's South China Sea can be called China's "little Persian Gulf", with rich oil reserves and 75% of its area is in the deep sea. It can be seen that the deep sea will become the main source of oil and gas energy in the future. However, there are many problems such as difficult construction, high risk, and high cost in deep-sea energy exploitation. It is urgent to develop a safer, more efficient and economi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B21/26B63B21/36
CPCB63B21/26B63B21/36B63B2021/265
Inventor 瑜璐孔纲强牛景琳杨庆
Owner DALIAN UNIV OF TECH
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