High-reliability swivel structure
By adopting the design of large-circuit body, extended screw and limit pin in the floating anchor chain rotary ring structure, combined with hot pressing and electric welding technology, the problem of loosening of nuts caused by vibration and seabed silt is significantly improved The safety factor and service life of the ring.
Patent Information
- Application Number
- CN202421214448.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The existing floating anchor chain rotary ring structure only depends on the welding strength due to the torque of the nut, which is prone to shrinking the welds and falling off due to vibration and subsea sediment erosion, resulting in failure and economic losses.
The large-swing ring body, extended screw and limit pin design are adopted. The threaded connection between the screw and the nut is combined with hot pressing and welding technology, and multiple protective measures are added to prevent the nut from loosening.
It significantly improves the safety factor of the rotary ring, prevents the nut from loosening when the weld fails, extends the service life of the rotary ring and reduces economic losses.
Smart Images
Figure CN222329956U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of swivel structures for buoy anchor chains, and in particular relates to a swivel structure with high reliability. Background Art
[0002] At present, the swivel used in the existing buoy anchor chain is mainly secured by welding the end nut. In actual use, because the torque of the nut is only guaranteed by the welding strength, due to the vibration of the anchor chain and the scouring of the swivel by the seabed mud, and the corrosion of the weld by seawater, it is easy to cause the weld to shrink, resulting in the nut falling off, and then causing the swivel to fail, causing significant economic losses. Utility Model Content
[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.
[0004] To this end, the technical solution adopted by the utility model is: a high-reliability swivel structure, including a large swivel body, a small swivel connected to the large swivel body, a screw rod passing through one end of the large swivel body away from the small swivel, one end of the screw rod extends into the interior of the large swivel body and is threadedly connected to a nut, a threaded through hole is provided at the end of the screw rod protruding from the nut and the threaded through hole is connected to a limiting screw, the limiting screw is fixedly welded to the screw, the limiting screw is fixedly welded to the nut, two first limiting pins and two second limiting pins are provided on the nut, the two first limiting pins are both nailed to the nut and the screw, and the two second limiting pins are both nailed to the nut and the screw.
[0005] The two first limiting pins are arranged opposite to each other and are coaxially arranged.
[0006] The two second limiting pins are arranged opposite to each other and are coaxially arranged.
[0007] The first limiting pin and the second limiting pin are vertically arranged.
[0008] Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts a multiple protection design, which greatly increases the safety factor of the swivel; firstly, while the original nut welding process remains unchanged, a larger swivel body is selected, and an extended screw is used, a threaded through hole is added to the screw, and a limit screw is added to the end of the nut to prevent the nut from loosening in the event of weld failure, thereby improving the safety factor; secondly, a hot pressing process is used at a diagonal 180° on the circumference of the screw, and 4 limit pins are pressed in to clamp the screw to prevent the nut from loosening; finally, the limit screw and the limit pin are welded with electric welding, which greatly increases the safety factor of the swivel. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1It is a structural schematic diagram of the utility model;
[0010] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle. DETAILED DESCRIPTION
[0011] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0012] On the contrary, the present application covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present application as defined by the claims. Further, in order to make the public have a better understanding of the present application, some specific details are described in detail in the detailed description of the present application below. Those skilled in the art can fully understand the present application without the description of these details.
[0013] See also Figure 1-2 A high-reliability swivel structure comprises a large swivel body 1, to which a small swivel 2 is connected, a screw 3 is passed through one end of the large swivel body 1 away from the small swivel 2, one end of the screw 3 extends into the interior of the large swivel body 1 and is threadedly connected with a nut 4, a threaded through hole is provided at the end of the screw 3 protruding from the nut 4, and the threaded through hole is connected to a limiting screw 5, the limiting screw 5 is fixedly welded to the screw 3, the limiting screw 5 is fixedly welded to the nut 4, and two first limiting pins 6 and two second limiting pins 7 are provided on the nut 4, the two first limiting pins 6 are both nailed to the nut 4 and the screw 3, and the two second limiting pins 7 are both nailed to the nut 4 and the screw 3.
[0014] The two first limiting pins 6 are arranged opposite to each other, and the two first limiting pins 6 are arranged coaxially.
[0015] The two second limiting pins 7 are arranged opposite to each other, and the two second limiting pins 7 are arranged coaxially.
[0016] The first limiting pin 6 and the second limiting pin 7 are arranged vertically.
[0017] The utility model adopts a multiple protection design, which greatly increases the safety factor of the swivel; firstly, under the condition that the original nut welding process remains unchanged, a larger swivel body is selected, and an extended screw is used, a threaded through hole is added on the screw, and a limit screw is added to the end of the nut to prevent the nut from loosening in the event of weld failure, thereby improving the safety factor; secondly, a hot pressing process is adopted at a diagonal 180° position on the circumference of the screw, 4 limit pins are pressed in, the screw is clamped, thereby preventing the nut from loosening, and finally the limit screw and the limit pin are welded by electric welding, which greatly increases the safety factor of the swivel.
Claims
1. A high-reliability swivel structure, characterized by: The invention comprises a large rotating ring body (1), a small rotating ring (2) is connected to the large rotating ring body (1), a screw rod (3) is passed through one end of the large rotating ring body (1) away from the small rotating ring (2), one end of the screw rod (3) extends into the interior of the large rotating ring body (1) and is threadedly connected to a nut (4), a threaded through hole is provided at the end of the screw rod (3) protruding from the nut (4), and a limiting screw rod (5) is connected to the threaded through hole, the limiting screw rod (5) is fixedly welded to the screw rod (3), the limiting screw rod (5) is fixedly welded to the nut (4), and two first limiting pins (6) and two second limiting pins (7) are arranged on the nut (4), the two first limiting pins (6) are both nailed to the nut (4) and the screw rod (3), and the two second limiting pins (7) are both nailed to the nut (4) and the screw rod (3).
2. A high reliability rotating ring structure as claimed in claim 1, characterized in that: The two first limit pins (6) are arranged opposite to each other, and the two first limit pins (6) are arranged coaxially.
3. A high reliability rotating ring structure as claimed in claim 1, characterized in that: The two second limiting pins (7) are arranged opposite to each other, and the two second limiting pins (7) are arranged coaxially.
4. A high reliability rotating ring structure as claimed in claim 1, characterized in that: The first limiting pin (6) and the second limiting pin (7) are arranged vertically.