Mooring anchor chain connecting swivel

Abstract

The utility model discloses a mooring anchor chain connecting swivel which comprises a connecting ring, a sand-proof sleeve and a connecting sleeve, the connecting ring is composed of a ring body and a connecting shaft, the sand-proof sleeve is attached to the connecting shaft, and the connecting sleeve is installed outside the connecting ring in an annular sleeving mode. By reducing the rotating gap and slotting the upper and lower parts of the rotating gap for mounting the cylindrical clamping columns, axial load transmission is formed, and meanwhile, the connecting ring can flexibly rotate around the middle connecting sleeve, so that clamping stagnation is not easy to generate under the condition of partial corrosion; lip-shaped sand-proof sleeves for preventing silt from entering are mounted at two ends of the connecting sleeve, so that underwater foreign matters are effectively prevented from entering a rotating space, and reliable rotation during long-term underwater use is kept; through the treatment, flexible rotation of the rotating ring can be kept, the use safety is improved, the service life is prolonged, and good economical efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of marine engineering construction, in particular to a mooring anchor chain connecting swivel. Background Art

[0002] Floating structures at sea are anchored by mooring chains, and many ships are also moored with anchor chains, making them a widely used mooring device. The swivel is the connecting and rotating component between the middle link and the anchor end link of the anchor chain. It not only transmits torque but also mitigates the impact of wind, waves, and currents on the anchor chain, making it an indispensable anchor chain accessory. Marine anchor chain swivels spend most of their time suspended above the water with the anchor. The large gap between the rotating parts allows for the accumulation of sediment and other debris, leading to rust and rotational problems. Therefore, this type of swivel should not be used on underwater mooring chains for long periods of time. Mud and debris constantly enter the rotating area, and the accumulation of these debris can eventually cause the swivel to become immobile and malfunction.

[0003] In order to solve the above problems, we propose a mooring anchor chain connection swivel. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the utility model provides a mooring anchor chain connecting swivel, and the utility model provides the following technical solutions:

[0005] A mooring anchor chain connecting swivel comprises a connecting ring, a sand-proof sleeve and a connecting sleeve, wherein the connecting ring consists of a ring body and a connecting shaft, the connecting shaft is coaxial with the center of the ring body, an outer ring groove is provided at the end of the connecting shaft, the sand-proof sleeve is fitted with the transition cone of the connecting shaft, the connecting sleeve is installed on the outer ring sleeve of the connecting ring, the connecting sleeve is a hollow sleeve body made of steel pipe with a slope on the outside, an inner ring groove is machined inside the sleeve body, the inner ring groove is adapted to the outer ring groove of the connecting shaft and forms an annulus, a clamping column is installed through the clamping column mounting hole opened radially along the inner ring groove, a blocking block is inserted in the clamping column mounting hole, and the blocking block is welded to the connecting sleeve.

[0006] Preferably, the blocking block is a square metal block with a curvature that fits the mounting hole of the clamping column, and the inner arc of the blocking block is consistent with the curvature of the inner ring groove.

[0007] Preferably, the clamping column is a cylindrical shaft forged from high-strength steel.

[0008] Preferably, the sand-proof sleeve is a structural member with a metal outer ring and a rubber lip in the middle.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] This patent reduces the rotating gap and installs cylindrical clamping columns in the upper and lower grooves of the rotating gap to form axial load transmission. At the same time, the connecting ring can rotate flexibly around the middle connecting sleeve and is not prone to getting stuck in the case of partial rust. Lip-shaped sand-proof sleeves are installed at both ends of the connecting sleeve to prevent mud and sand from entering, effectively preventing underwater foreign objects from entering the rotating space and maintaining reliable rotation during long-term underwater use. This patent can maintain the flexible rotation of the swivel, improve safety of use and service life, and has better economy. 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 skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not to be considered as limitations of the present invention. Throughout the accompanying drawings, the same reference numerals are used to represent the same components.

[0012] In the attached figure:

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

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

[0015] Figure 3 This is a schematic diagram of the connecting ring structure of a preferred embodiment of the present utility model;

[0016] Figure 4 It is a schematic structural diagram of a connecting sleeve according to a preferred embodiment of the present utility model.

[0017] in, Figures 1 to 4 The corresponding relationship between the reference numerals and components is as follows:

[0018] 1. Connecting ring; 11. Ring body; 12. Connecting shaft; 2. Anti-sand sleeve; 3. Connecting sleeve; 31. Sleeve body; 32. Clamping column mounting hole; 33. Inner ring groove; 4. Sealing block; 5. Clamping column. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0020] 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, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] The following combination Figures 1 to 4 A mooring anchor chain connecting swivel according to an embodiment of the present utility model is described in detail.

[0022] like Figures 1 to 4 As shown, a mooring anchor chain connecting swivel is connected by a stepped shaft and a connecting sleeve, with rollers between them to achieve free rotation. Its components include: a connecting ring 1, a sand-proof sleeve 2, a connecting sleeve 3, a blocking block 4, and a clamping column 5.

[0023] The connecting ring 1 is a steel ring with a protruding shaft, formed by bending or molding round steel and then welding it into a ring with a protruding shaft. The ring body 11 meets the required dimensions of the chain links to be connected, and the connecting shaft 12 is coaxial with the center of the ring body 11, allowing the ring body 11 to rotate around the axis. The end of the connecting shaft 12 is upset for a certain length to meet the required strength at the connection point, and two ring grooves are machined at the end to allow the clamping column 5 to be inserted and installed.

[0024] The sand-proof sleeve 2 features a metal outer ring with a rubber lip in the middle. This lip fits snugly against the transition cone of the connecting shaft 12, preventing external mud and sand from entering the rotating area when the connecting ring 1 rotates around the connecting sleeve 3. The metal outer ring is secured to the end of the connecting sleeve 3 by welding or screws. The length of the rubber lip and the number of sealing protrusions at the contact point with the connecting shaft 12 vary depending on the water depth and regional geology, ensuring that no impurities enter the rotating area during long-term use.

[0025] The connecting sleeve 3 is a sleeve made of thick-walled steel pipe, with a certain angle at both ends to form a hollow sleeve body 31 with an external slope. Its length meets the installation requirements of the left and right sets of connecting shafts 12, and there is a 3-5mm spacing between the ends of the connecting shafts 12. Multiple circles of inner ring grooves 33 are processed in the sleeve, which match the position of the outer ring groove after the connecting shaft 12 is installed to form an annulus to meet the embedded installation requirements of the clamping column 5, forming a structure similar to a cylindrical roller. To facilitate the installation of the clamping column 5, a clamping column mounting hole 32 is opened radially on each circle of the inner ring groove 33. The width is slightly larger than the clamping column 5 by 1-2mm, and the length is consistent with the width of the inner ring groove 33, which is convenient for the installation of the clamping column 5.

[0026] The blocking block 4 is a square metal block with arcs on the upper and lower parts that matches the column mounting hole 32. The material is consistent with the connecting sleeve 3. It is inserted into the column mounting hole 32. The outside is connected to the connecting sleeve 3 by welding. The internal arc is consistent with the inner ring groove 33, so that the column 5 can rotate freely.

[0027] The clamping column 5 is a cylindrical shaft forged from high-strength steel and hardened on the surface. It is installed in the annulus formed by the outer ring groove of the connecting shaft 12 and the inner ring groove 33 of the connecting sleeve 3, so as to realize the free axial rotation of the connecting ring 1 and limit the axial movement of the two at the same time, forming a good swivel overall.

[0028] The specific installation steps are:

[0029] Step 1: Complete the design based on the specifications of the required chain link. Determine the diameter of the ring body 11. Set the upset position and dimensions of the connecting shaft 12 according to the load requirements. Bend and weld the round steel into the connecting ring 1 with the protruding column. Machine the connecting shaft 12 area and complete the ring groove. Then, complete the manufacturing of the sand-proof sleeve 2, connecting sleeve 3, blocking block 4, and clamping column 5 according to the design.

[0030] Step 2: Insert the sand-proof sleeve 2 into the end of the connecting shaft 12, with the sealing lip fitting the tapered transition position, insert the two sets of connecting rings 1 into the connecting sleeve 3 from both ends respectively, and align the ring groove of the connecting shaft 12 and the inner ring groove 33 through the clamping column mounting hole 32. Insert a sufficient number of clamping columns 5 from the clamping column mounting hole 32, and insert the blocking block 4 into the clamping column mounting hole 32. Take necessary cooling protection measures to protect the rubber parts of the sand-proof sleeve 2, complete the welding of the blocking block 4, and realize that the sleeve body 31 forms a complete sleeve, and the inner clamping column 5 will not fall out. Fix the outer ring of the sand-proof sleeve 2 to the end face of the sleeve body 31 to complete the installation of the swivel.

[0031] Step 3: Connect the two sections of anchor chain to the ring bodies 11 at both ends through the anchor shackles. When the anchor chain rotates axially, the ring body 11 rotates around the connecting sleeve 3. At this time, the clamping column 5 rotates in the inner ring groove 33, effectively reducing the axial rotation resistance.

[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mooring anchor chain connecting swivel, comprising a connecting ring (1), a sand-proof sleeve (2) and a connecting sleeve (3), characterized in that: The connecting ring (1) is composed of a ring body (11) and a connecting shaft (12), the connecting shaft (12) is coaxial with the center of the ring body (11), an outer ring groove is provided at the end of the connecting shaft (12), the anti-sand sleeve (2) is fitted with the transition cone of the connecting shaft (12), the outer ring sleeve of the connecting ring (1) is provided with the connecting sleeve (3), the connecting sleeve (3) is a hollow sleeve body (31) with a slope on the outside made of a steel pipe, an inner ring groove (33) is machined inside the sleeve body (31), the inner ring groove (33) is adapted to the outer ring groove of the connecting shaft (12) and forms an annulus, a clamping column (5) is installed through a clamping column mounting hole (32) opened radially along the inner ring groove (33), a blocking block (4) is inserted into the clamping column mounting hole (32), and the blocking block (4) is welded to the connecting sleeve (3).

2. A mooring chain connecting swivel according to claim 1, characterized in that: The blocking block (4) is a square metal block with an arc that is adapted to the column mounting hole (32), and the inner arc of the blocking block (4) is consistent with the arc of the inner ring groove (33).

3. The mooring anchor chain connecting swivel according to claim 1, characterized in that: The clamping column (5) is a cylindrical shaft body forged from high-strength steel.

4. The mooring anchor chain connecting swivel according to claim 1, characterized in that: The sand-proof sleeve (2) is a structural member with a metal outer ring and a rubber lip in the middle.

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