A liferaft inflatable floor structure with anti-sticking function in low temperature environment
By combining a protective adhesive with a polytetrafluoroethylene coating on the bottom of the inflatable life raft with a guide groove, the problem of anti-adhesion in low-temperature environments is solved, achieving an anti-adhesion effect on the life raft and improving its stability and sealing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 隆佳安全科技(泰州)有限公司
- Filing Date
- 2025-10-17
- Publication Date
- 2026-07-21
AI Technical Summary
The bottom of existing inflatable life rafts is prone to sticking to ice or sharp objects in low-temperature environments, which causes the anti-sticking effect to fail and may weaken the sealing performance.
The protective adhesive with a polytetrafluoroethylene coating is combined with a guide groove. The combination of pull rope and transverse rope enables the protective adhesive to slide stably, ensuring that it does not stick in low-temperature environments. The stabilizing cylinder and guide groove provide a stable track to prevent deviation or jamming.
This effectively prevents the bottom of the life raft from sticking to ice or frozen soil, ensuring that the life raft can be smoothly deployed, moved, or detached from contact objects when needed, thus improving the emergency reliability and stability of the life raft.
Smart Images

Figure CN224528947U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of life rafts, specifically, it relates to an inflatable raft bottom structure for life rafts that prevents adhesion in low-temperature environments. Background Technology
[0002] In low-temperature environments such as at sea and in polar regions, life rafts are important emergency rescue equipment, and their reliability is directly related to the safety of people in distress. Among them, the inflatable raft bottom, as a key component that comes into contact with the water or ice surface, is of particular concern in low-temperature environments.
[0003] In practical use, the raft bottom often uses low-friction coatings or special smooth materials to achieve anti-adhesion. These materials usually have low surface hardness and are more prone to scratches, wear, or even coating peeling when in contact with rough ice surfaces, reefs, or sharp objects, resulting in failure of the anti-adhesion effect and potentially weakening the sealing of the raft bottom.
[0004] In view of this, this utility model is hereby proposed. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an inflatable raft bottom structure for life rafts that prevents adhesion in low-temperature environments.
[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: A low-temperature environment-resistant inflatable life raft bottom structure includes a life raft body with a protective canopy. A safety valve is located on one side of the life raft body. Two stabilizing cylinders are installed at the bottom of the life raft body. Each stabilizing cylinder has a rotating part inside, with protective adhesive wrapped around its outer side. The surface of the protective adhesive is coated with polytetrafluoroethylene (PTFE). A guide groove is provided on one side of the inner wall of the stabilizing cylinder, and the protective adhesive slides within the guide groove. Multiple connecting parts are located at the front edge of the protective adhesive. Multiple stabilizing rings are installed on both sides of the life raft body. Pull ropes are installed inside each stabilizing ring, with one end of each pull rope engaging with a connecting part. A transverse rope is fixedly connected to the other ends of the multiple pull ropes, and a pulling part is fixedly connected to the outer side of the transverse rope.
[0007] Optionally, a U-shaped auxiliary raft is fixedly connected to one side of the life raft body, and both the life raft body and the U-shaped auxiliary raft are coated with chlorinated rubber.
[0008] Optionally, square slots are provided on both sides of the protective canopy, and protective cloth is provided on both sides of the protective canopy, with Velcro fasteners between the protective cloth and the square slots.
[0009] Optionally, the pulling part includes a movable rope fixedly connected to the outside of the transverse rope, one end of which is equipped with a pull ring, and the pull ring is located inside the protective shed through a square groove.
[0010] Optionally, the connecting part includes multiple retaining rings installed on the front edge of the protective rubber, and one end of the pull rope is fixedly connected to the retaining rings.
[0011] Optionally, the rotating part includes a rotating rod that is rotatably fitted inside the stabilizing cylinder, and protective adhesive is wrapped around the rotating rod.
[0012] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time: The protective rubber surface of the raft bottom is coated with polytetrafluoroethylene (PTFE). PTFE has extremely low surface tension and non-stick properties, effectively preventing the raft bottom from sticking to ice, frozen soil, or other objects in low-temperature environments. This ensures that the life raft can be smoothly deployed, moved, or detached from contact objects when needed, improving the reliability of emergency use. The deployment of the protective rubber can be easily controlled through the cooperation of the pull rope, the transverse rope, and the pulling part. The pulling part drives the transverse rope, which in turn pulls the protective rubber along the guide groove. The operation is simple and labor-saving. Even in low-temperature and emergency environments, users can quickly deploy the protective rubber, adapting to the urgency of life-saving scenarios. Two stabilizing cylinders provide a stable track for the sliding of the protective rubber, and the guide groove ensures that the protective rubber moves in a fixed direction, avoiding deviation or jamming, ensuring the stable performance of the protective function, thereby improving the stability of the life raft body 1.
[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0014] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: Figure 1 A schematic diagram of the inflatable raft bottom structure for preventing adhesion in low-temperature environments provided in this application; Figure 2 A schematic diagram of the bottom structure of the inflatable raft bottom structure for preventing adhesion in low-temperature environments provided in this application; Figure 3 This is a top view of the inflatable raft bottom structure of the life raft designed to prevent adhesion in low-temperature environments, as provided in this application. Figure 4 A schematic diagram of the internal structure of the stabilizing cylinder of the inflatable raft bottom structure for preventing adhesion in low-temperature environments provided in this application; Figure 5This is an enlarged structural diagram of point A of the inflatable raft bottom structure for the low-temperature environment anti-adhesion life raft provided in this application. The attached diagram lists the components represented by each number as follows: 1. Life raft body; 2. Protective canopy; 3. U-shaped auxiliary raft; 4. Safety valve; 5. Protective cloth; 6. Stabilizing cylinder; 7. Pull rope; 8. Horizontal rope; 9. Movable rope; 10. Pull ring; 11. Guide groove; 12. Protective rubber; 13. Fixing ring; 14. Stabilizing ring; 15. Rotating rod; 16. Square groove.
[0015] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0016] The present invention will now be described in further detail with reference to the accompanying drawings.
[0017] Please see Figure 1-5 As shown, this embodiment provides a low-temperature environment anti-adhesion inflatable raft bottom structure, including a life raft body 1, a protective canopy 2 installed on the life raft body 1, a safety valve 4 installed on one side of the life raft body 1, two stabilizing cylinders 6 installed at the bottom of the life raft body 1, a rotating part installed inside the stabilizing cylinder 6, a protective adhesive 12 wrapped around the outside of the rotating part, and the surface of the protective adhesive 12 coated with polytetrafluoroethylene, a guide groove 11 opened on one side of the inner wall of the stabilizing cylinder 6, the protective adhesive 12 slidingly fitting in the guide groove 11, a plurality of connecting parts provided at the front edge of the protective adhesive 12, a plurality of stabilizing rings 14 installed on both sides of the life raft body 1, a pull rope 7 installed inside the stabilizing ring 14, one end of the pull rope 7 cooperating with the connecting part, a transverse rope 8 fixedly connected between the other ends of the plurality of pull ropes 7, and a pulling part fixedly connected to the outside of the transverse rope 8.
[0018] One application of this embodiment is as follows: When anti-adhesion is required, by pulling the pulling part on the outside of the transverse rope 8, the pulling rope 7 is driven. The pulling rope 7 pulls the protective adhesive 12 out from the inside of the stabilizing cylinder 6 along the guide groove 11 through the connecting part, so that the protective adhesive 12 covers the parts of the raft bottom that are prone to adhesion, thereby isolating the bottom of the life raft body 1 from direct contact with the external low-temperature objects, thus playing an anti-adhesion role. When the bottom of the life raft body 1 comes into contact with ice, frozen soil or other low-temperature objects, the polytetrafluoroethylene layer can isolate the bottom of the raft from direct contact with the external objects, greatly reducing the risk of adhesion caused by low temperature. The guide groove 11 opened on one side of the inner wall of the stabilizing cylinder 6 forms a sliding fit with the protective adhesive 12, preventing it from shifting, wrinkling or getting stuck, so that the protective adhesive 12 always moves smoothly in the preset direction, ensuring the accuracy of the anti-adhesion coverage. Water can be poured into the interior of the stabilizing cylinder 6 through the guide groove 11, thereby improving the stability of the life raft body 1.
[0019] In this embodiment, a U-shaped auxiliary raft 3 is fixedly connected to one side of the life raft body 1, and both the life raft body 1 and the U-shaped auxiliary raft 3 are coated with chlorinated rubber.
[0020] The U-shaped auxiliary raft 3 can serve as a temporary storage space or a transition area for people to get on and off the raft, reducing the probability of the main body directly contacting low-temperature objects. Chlorinated rubber has excellent weather resistance, corrosion resistance and low-temperature resistance, and strong adhesion, making it less prone to cracking or falling off in low-temperature environments.
[0021] In this embodiment, square grooves 16 are provided on both sides of the protective shed 2, and protective cloth 5 is provided on both sides of the protective shed 2. Velcro is provided between the protective cloth 5 and the square groove 16. The pulling part includes a movable rope 9 fixedly connected to the outside of the transverse rope 8. One end of the movable rope 9 is equipped with a pull ring 10, and the pull ring 10 is located inside the protective shed 2 through the square groove 16. The connecting part includes a plurality of fixing rings 13 installed at the front edge of the protective rubber 12. One end of the pull rope 7 is fixedly connected to the fixing ring 13. The rotating part includes a rotating rod 15 rotatably fitted inside the stabilizing cylinder 6. The protective rubber 12 is wrapped around the rotating rod 15.
[0022] When the movable rope 9 needs to be pulled, the protective cloth 5 can be easily lifted to expose the square groove 16 for the rope to pass through. Personnel inside the protective canopy 2 hold the pull ring 10 and, extending through the square groove 16, pull the movable rope 9. The movable rope 9 causes the transverse rope 8 to tighten, distributing the tension to multiple pull ropes 7 on both sides. The pull ropes 7 are pulled along the stabilizing ring 14, and one end of the pull rope 7 pulls the protective rubber 12 through the fixing ring 13, causing the protective rubber 12 to slide forward along the guide groove 11 on the inner wall of the stabilizing cylinder 6, thus protecting the raft. The adhesive 12 gradually unfolds from the rotating rod 15 until it completely covers the bottom of the life raft body 1. At this time, the polytetrafluoroethylene coating plays an anti-adhesion role. Then, by rotating the transverse rope 8, it drives multiple movable ropes 9 to rotate and knot, thereby facilitating the stability of the protective adhesive 12. After the operation is completed, the protective cloth 5 is reattached, and the Velcro automatically tightens, quickly restoring the sealed state without complicated fixing steps. When the protective adhesive 12 is to be recycled, the life raft body 1 must be recycled and then manually recycled by staff.
[0023] During operation, to prevent adhesion, the raft bottom often uses a low-friction coating or a special smooth material. These materials typically have low surface hardness, making them more prone to scratches, wear, and even coating peeling when in contact with rough ice surfaces, reefs, or sharp objects. This leads to the failure of the anti-adhesion effect and may also weaken the raft bottom's seal. In this solution, personnel inside the raft hold the pull ring 10 inside the protective canopy 2, extending through the square groove 16, and pull the movable rope 9. The movable rope 9 tightens the transverse rope 8, which distributes the tension to multiple pull ropes 7 on both sides. The pull ropes 7 are pulled along the stabilizing ring 14, while... One end of the pull rope 7 pulls the protective rubber 12 through the fixing ring 13, causing the protective rubber 12 to slide forward along the guide groove 11 on the inner wall of the stabilizing cylinder 6. The protective rubber 12 gradually unfolds from the rotating rod 15 until it completely covers the bottom of the life raft body 1. Water can be poured into the interior of the stabilizing cylinder 6 through the guide groove 11, thereby improving the stability of the life raft body 1. Then, by rotating the transverse rope 8, it drives multiple movable ropes 9 to rotate and knot, thereby facilitating the stability of the protective rubber 12. After the operation is completed, the protective cloth 5 is reattached, and the Velcro automatically tightens, quickly restoring the sealed state without complicated fixing steps.
[0024] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.
Claims
1. A life raft inflatable bottom structure for preventing adhesion in low-temperature environments, characterized in that, include: The life raft body (1) is equipped with a protective canopy (2). A safety valve (4) is provided on one side of the life raft body (1). Two stabilizing cylinders (6) are installed at the bottom of the life raft body (1). A rotating part is provided inside the stabilizing cylinder (6). The outer side of the rotating part is wrapped with protective rubber (12). The surface of the protective rubber (12) is coated with polytetrafluoroethylene. A guide groove (11) is opened on one side of the inner wall of the stabilizing cylinder (6). The protective rubber (12) slides in the guide groove (11). Multiple connecting parts are provided at the front edge of the protective rubber (12). Multiple stabilizing rings (14) are installed on both sides of the life raft body (1). A pull rope (7) is provided inside the stabilizing ring (14). One end of the pull rope (7) is matched with the connecting part. A transverse rope (8) is fixedly connected between the other ends of the multiple pull ropes (7). A pulling part is fixedly connected to the outer side of the transverse rope (8).
2. The inflatable raft bottom structure for preventing adhesion in low-temperature environments according to claim 1, characterized in that, A U-shaped auxiliary raft (3) is fixedly connected to one side of the life raft body (1), and both the life raft body (1) and the U-shaped auxiliary raft (3) are coated with chlorinated rubber.
3. The inflatable raft bottom structure for preventing adhesion in low-temperature environments according to claim 1, characterized in that, Square grooves (16) are provided on both sides of the protective shed (2), and protective cloth (5) is provided on both sides of the protective shed (2), with Velcro between the protective cloth (5) and the square grooves (16).
4. The inflatable raft bottom structure for preventing adhesion in low-temperature environments according to claim 3, characterized in that, The pulling part includes a movable rope (9) fixedly connected to the outside of the transverse rope (8), one end of the movable rope (9) is equipped with a pull ring (10), and the pull ring (10) is located inside the protective shed (2) through a square groove (16).
5. The inflatable raft bottom structure for preventing adhesion in low-temperature environments according to claim 1, characterized in that, The connecting part includes multiple fixing rings (13) installed on the front edge of the protective rubber (12), and one end of the pull rope (7) is fixedly connected to the fixing rings (13).
6. The inflatable raft bottom structure for preventing adhesion in low-temperature environments according to claim 1, characterized in that, The rotating part includes a rotating rod (15) that is rotatably fitted inside the stabilizing cylinder (6), and protective adhesive (12) is wrapped around the rotating rod (15).