Polyurethane buffer fender
By introducing limit rods, support plates, coil springs and limit plates into the polyurethane fenders, the problem of insufficient cushioning strength of the existing polyurethane fenders is solved, and the effect of high-strength cushioning and long-life is achieved.
Patent Information
- Application Number
- CN202422031727.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-21
AI Technical Summary
When cushioning heavy-duty ships, existing polyurethane fenders have insufficient buffer strength, low structural reliability and short service life.
Installation mechanisms such as limit rods, support plates, coil springs, sleeves and limit plates are used to be fixed to the port through chains. The coil spring deforms when extruded to increase the buffer strength, the limit mechanism prevents misalignment, the support plate increases the contact area, and chamfers prevents conflict.
It greatly improves the cushioning strength and cushioning performance of the fender body, ensures the reliability of the structure, and extends the service life.
Smart Images
Figure CN223163830U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fenders, in particular to a polyurethane fender. Background Technique
[0002] The polyurethane floating fender is a fender that uses lightweight and highly elastic foam as a buffer medium. It has a better floating fender system than the inflatable fender and is widely used in ports, offshore areas, and ship-to-ship operations. It is made of environmentally friendly materials and new polymer materials with a high elastic modulus, having high strength, high elasticity, high adhesion, and maximum anti-permeability and aging resistance, and can ultimately achieve high economic value. The polyurethane floating fender is a fender that uses lightweight and highly elastic foam as a buffer medium. It has a better floating fender system than the inflatable fender and is widely used in ports, offshore areas, and ship-to-ship operations.
[0003] The polyurethane fender, as a substitute for the marine inflatable fender, adopts a new spraying formula. The produced fender is not only brightly colored but also more durable, and its service life can be 7-10 times that of the inflatable fender. This compression-type fender uses polyurea material as the outer protective layer and polyurethane foam material or plastic foam as the buffer medium inside; during use, it absorbs the impact energy of the ship through its compression deformation, thereby reducing the damage to the wharf and the ship. In the prior art, due to the poor support of the internal filling material and the simple structure of the polyurethane fender, when buffering a heavy ship, the buffering strength is insufficient, the reliability is low, and the service life is short. Therefore, we have introduced a polyurethane buffer fender. Content of the Utility Model
[0004] The purpose of the utility model is to provide a polyurethane buffer fender, which greatly improves the buffering strength of the fender body, improves the buffering performance, has a simple structure while ensuring the structural reliability and a long service life, so as to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution:
[0006] A polyurethane buffer fender includes a fender body. Positioning rings are fixedly arranged at both ends of the fender body. A limiting rod is arranged inside the fender body. Support mechanisms are arranged at both ends of the limiting rod. A plurality of groups of coil springs are sleeved on the limiting rod. Sleeves are fixedly arranged inside the fender body corresponding to the plurality of coil springs. One end of the coil spring is fixedly connected to the limiting rod, and the other end of the coil spring is clamped with the corresponding sleeve. The limiting rod is provided with a limiting mechanism that can keep the distances between the plurality of groups of coil springs consistent.
[0007] Preferably, the support mechanism includes two support plates which are respectively and fixedly arranged at both ends of the limiting rod, and both support plates are fixedly connected to the inner side wall of the fender body.
[0008] Preferably, the limiting mechanism includes a limiting plate, and a plurality of the limiting plates are fixedly arranged on both sides of the limiting rod where the coil springs are located.
[0009] Preferably, the limiting plate is arranged as a circular plate.
[0010] Preferably, the limiting plate is perpendicular to the limiting rod.
[0011] Preferably, a chamfer is provided on the edge of the side of the limiting plate close to the corresponding coil spring.
[0012] Preferably, the angle of the chamfer is set to 45°.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] For this polyurethane fender, through the provided fender body, positioning rings, support plates, limiting rods, chamfers, limiting plates, coil springs, and sleeves, the positioning rings at both ends of the fender body are fixed to the port through installation mechanisms such as chains. When the ship squeezes the fender body, the fender body is squeezed. At the same time, several groups of coil springs inside the fender body are sequentially squeezed from the outside to the inside. The deformation of the coil springs improves the buffering strength of the fender body. The chamfers of several groups of coil springs can prevent the coil springs from sliding. The limiting mechanism can provide limitation for several groups of coil springs to prevent the several groups of coil springs from being misaligned during extrusion, so as not to achieve the ideal buffering effect. The support plates increase the contact area between the limiting rods and the fender body, improve the support of the fender body for the limiting rods, and the chamfers can prevent the coil springs from coming into contact with the limiting plates when deforming. Description of the Drawings
[0015] Figure 1 It is a schematic structural view of a polyurethane fender.
[0016] Figure 2 It is a schematic internal structural view of a polyurethane fender.
[0017] Figure 3 It is Figure 2 an enlarged schematic view of the partial A part in
[0018] In the figure: 1. Fender body; 2. Positioning ring; 3. Support plate; 4. Limiting rod; 5. Chamfer; 6. Limiting plate; 7. Coil spring; 8. Sleeve. Detailed Embodiment
[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0020] Please refer to Figures 1 to 3 , the present invention provides a technical solution:
[0021] A polyurethane fender, comprising a fender body 1. Positioning rings 2 are fixedly provided at both ends of the fender body 1. The positioning rings 2 can position the fender body 1 on the side of the port through a locking mechanism such as a chain. A limiting rod 4 is arranged inside the fender body 1. Support mechanisms are arranged at both ends of the limiting rod 4. A plurality of groups of coil springs 7 are sleeved on the rod wall of the limiting rod 4. Sleeves 8 are fixedly arranged on the inner side of the fender body 1 corresponding to the plurality of coil springs 7. The outer end of the coil spring 7 and the fender body 1 can be positioned through the sleeve 8. One end of the coil spring 7 is fixedly connected to the limiting rod 4, and the other end of the coil spring 7 is clamped with the corresponding sleeve 8. A limiting mechanism for keeping the distances between the plurality of groups of coil springs 7 consistent is arranged on the rod wall of the limiting rod 4. The limiting mechanism can provide limitation for the plurality of groups of coil springs 7 to prevent the plurality of groups of coil springs 7 from being misaligned when being squeezed, so as not to achieve an ideal buffering effect.
[0022] The support mechanism includes two support plates 3. The two support plates 3 are respectively fixedly arranged at both ends of the limiting rod 4. The two support plates 3 are both fixedly connected to the inner side wall of the fender body 1. The support plates 3 increase the contact area between the limiting rod 4 and the fender body 1, and improve the support of the fender body 1 for the limiting rod 4.
[0023] The limiting mechanism includes limiting plates 6. A plurality of limiting plates 6 are fixedly arranged on the rod wall of the limiting rod 4 on both sides of the coil springs 7. The limiting plates 6 can provide limitation for the coil springs 7. The limiting plates 6 are arranged as circular plates and are perpendicular to the limiting rod 4. A chamfer 5 is arranged on the edge of the side of the limiting plate 6 close to the corresponding coil spring 7. The chamfer 5 can prevent the coil spring 7 from contacting the limiting plate 6 when deforming. The angle of the chamfer 5 is set to 45°.
[0024] In use, the positioning rings 2 at both ends of the fender body 1 are fixed to the port through an installation mechanism such as a chain. When the ship presses against the fender body 1, the fender body 1 is squeezed. At the same time, several groups of coil springs 7 inside the fender body 1 are sequentially squeezed from the outside to the inside. The deformation of the coil springs 7 improves the buffering strength of the fender body 1. The chamfers 5 on several groups of coil springs 7 can prevent the coil springs 7 from sliding. The limiting mechanism can provide limitation for several groups of coil springs 7 to prevent the several groups of coil springs 7 from being misaligned during extrusion, so as to avoid failing to achieve the ideal buffering effect. The support plate 3 increases the contact area between the limiting rod 4 and the fender body 1, improving the support of the fender body 1 for the limiting rod 4. The chamfer 5 can prevent the coil spring 7 from contacting the limiting plate 6 when it deforms. The utility model greatly improves the buffering strength of the fender body, improves the buffering performance, has a simple structure while ensuring the structural reliability and a long service life.
[0025] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A polyurethane fender, comprising a fender body (1), characterized in that: Positioning rings (2) are fixedly provided at both ends of the fender body (1). A limiting rod (4) is arranged inside the fender body (1). Support mechanisms are arranged at both ends of the limiting rod (4). A plurality of groups of coil springs (7) are sleeved on the rod wall of the limiting rod (4). Sleeves (8) are fixedly provided on the inner side of the fender body (1) corresponding to the plurality of coil springs (7). One end of the coil spring (7) is fixedly connected to the limiting rod (4), and the other end of the coil spring (7) is clamped with the corresponding sleeve (8). A limiting mechanism for keeping the distances between the plurality of groups of coil springs (7) consistent is arranged on the rod wall of the limiting rod (4).
2. The polyurethane fender according to claim 1, characterized in that: The support mechanism includes two support plates (3). The two support plates (3) are respectively fixedly arranged at both ends of the limiting rod (4), and the two support plates (3) are both fixedly connected to the inner side wall of the fender body (1).
3. The polyurethane fender according to claim 1, characterized in that: The limiting mechanism includes limiting plates (6). The plurality of limiting plates (6) are fixedly arranged on the rod wall of the limiting rod (4) on both sides of the coil springs (7).
4. A polyurethane fender according to claim 3, characterized in that: The limiting plate (6) is arranged as a circular plate.
5. The polyurethane fender according to claim 3, wherein: The limiting plate (6) is perpendicular to the limiting rod (4).
6. The polyurethane fender according to claim 3, wherein: A chamfer (5) is arranged on one side edge of the limiting plate (6) close to the corresponding coil spring (7).
7. A polyurethane fender according to claim 6, characterized in that: The angle of the chamfer (5) is set to 45°.