Stern structure for storing and hiding positioning anchor
By designing an automated stern structure, the anchor equipment can be fully enclosed for storage and automatic cleaning, solving the problems of corrosion, fluid resistance, and safety hazards associated with traditional anchor equipment, and improving equipment lifespan and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI TANHAI MARINE TECH CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-05
AI Technical Summary
Traditional ship anchoring equipment is exposed to the outside, leading to corrosion, increased fluid resistance, safety hazards, and maintenance difficulties. Existing improvement solutions have failed to effectively solve the problems of concealing and protecting anchoring equipment.
Design a highly automated stern structure that utilizes a hydraulic arm and heating module to achieve fully enclosed anchor storage, combined with a high-pressure nozzle automatic cleaning and drying system to prevent corrosion, and is easy to operate.
It achieves fully enclosed storage of anchor equipment, automatic cleaning and corrosion prevention, improves equipment life, reduces navigation resistance and maintenance costs, and ensures safety.
Smart Images

Figure CN224197922U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marine equipment, specifically to a stern structure for storing and concealing a positioning anchor. Background Technology
[0002] Traditional ship anchoring equipment is typically exposed on the hull surface or deck, which has the following drawbacks:
[0003] Corrosion risk: Long-term exposure of anchor chains and anchor bodies to seawater and humid air can cause corrosion of metal components and reduce equipment lifespan.
[0004] Fluid resistance: The outward-protruding anchor structure disrupts the streamlined design of the stern, increasing navigation resistance and fuel consumption.
[0005] Safety hazard: The protruding component may collide with external objects when berthing or navigating in icy areas, causing structural damage.
[0006] Maintenance difficulties: Mud, sand, marine organisms and other debris caught in the anchor chain need to be cleaned manually, increasing maintenance costs.
[0007] While existing improvement schemes attempt to optimize the stern icebreaking structure, they fail to address the issues of anchor concealment and protection. Therefore, there is an urgent need for an integrated stern structure capable of fully enclosed anchor storage, automatic cleaning, and corrosion protection. Utility Model Content
[0008] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a stern structure for storing and hiding the anchor with a high degree of automation, convenient operation and concealment.
[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0010] A stern structure for storing and concealing a positioning anchor includes a hull structure, an anchor winch, an anchor chain, a heating module, a fan, and a hatch. The anchor winch is fixed to the hull structure and movably connected to the anchor chain. An anchor body is fixed to one end of the anchor chain. A fixing seat is provided between the hull structure and the anchor winch. A first hydraulic arm is installed on one side of the fixing seat. The first hydraulic arm is connected to a mounting plate. A fixing frame is provided on the mounting plate. A through hole is provided on the mounting plate, through which the anchor chain passes and movably connects to the fixing frame. A first vent is provided below the mounting plate. The heating module is installed on the structure and is fixedly connected to the fan. The heating module is provided with a connecting pipe, and a check valve is installed at one end of the connecting pipe. A telescopic hose is fixed between the check valve and the first air outlet. The hull structure is provided with a mounting base, and a storage compartment is provided on the mounting base. One end of the storage compartment is movably connected to the mounting plate, and the mounting plate can move horizontally inside the storage compartment. The other end of the storage compartment is fixed with a built-in hinge, and the storage compartment is movably connected to the hatch through the built-in hinge. A second hydraulic arm is provided between the storage compartment and the hatch.
[0011] Furthermore, the mounting plate is equipped with high-pressure nozzles to clean the anchor chain.
[0012] Furthermore, the high-pressure nozzles are installed at the same horizontal level and arranged in a staggered pattern at a 15° angle to improve coverage.
[0013] Furthermore, a guide strip is provided between the storage compartment and the mounting plate to reduce the coefficient of friction.
[0014] Furthermore, the mounting base is provided with reinforcing ribs on both sides to enhance structural stability.
[0015] Furthermore, a second vent is provided below the hatch to assist in exhaust.
[0016] Compared with existing stern structures used for storing and concealing anchors, this invention has at least the following advantages:
[0017] 1. Spatial Innovation: Utilizing the non-load-bearing area at the stern to construct enclosed storage space, achieving a unity of function and aesthetics;
[0018] 2. Innovative Protection: The drying system automatically starts after storage, blocking corrosive media at the source;
[0019] 3. Control Innovation: The coordinated action of the two hydraulic arms enables the entire operation process to be automated. Attached Figure Description
[0020] To more clearly illustrate the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is a structural diagram of the stern structure used to store and conceal the positioning anchor;
[0022] Figure 2 It is the aforementioned Figure 2 A structural diagram from another angle;
[0023] Figure 3 It is the aforementioned Figure 2 A partial structural diagram;
[0024] Figure 4 It is the aforementioned Figure 3 The left view;
[0025] Figure 5 It is the aforementioned Figure 1 A partial sectional view.
[0026] In the diagram: 1. Hull structure; 2. Anchor winch; 3. Anchor chain; 4. Anchor body; 5. Fixing seat; 6. First hydraulic arm; 7. Mounting plate; 8. Fixing frame; 9. Through hole; 10. Heating module; 11. Fan; 12. Connecting pipe; 13. Check valve; 14. Telescopic hose; 15. First vent; 16. Mounting seat; 17. Storage compartment; 18. Internal hinge; 19. Hatch door; 20. Second hydraulic arm; 21. High-pressure nozzle; 22. Guide strip; 23. Reinforcing rib; 24. Second vent. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0029] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0030] Example 1:
[0031] like Figure 1-5 As shown, the angle adjustment device of this utility model includes a hull structure 1, characterized by comprising an anchor winch 2, an anchor chain 3, a heating module 10, a fan 11, and a hatch 19. The anchor winch 2 is fixed to the hull structure 1, and the anchor winch 2 is movably connected to the anchor chain 3. An anchor body 4 is fixed to one end of the anchor chain 3. A fixed seat 5 is provided between the hull structure 1 and the anchor winch 2. A first hydraulic arm 6 is installed on one side of the fixed seat 5. The first hydraulic arm 6 is connected to a mounting plate 7. A fixing frame 8 is provided on the mounting plate 7. High-pressure nozzles 21 are provided on the mounting plate 7. The high-pressure nozzles 21 are installed at the same horizontal level. A through hole 9 is provided on the mounting plate 7. The anchor chain 3 passes through the through hole 9 and is movably connected to the fixing frame 8. A first air outlet 15 is provided below the mounting plate 7. The heating module 10 is installed on the hull structure 1. Module 10 is fixedly connected to the fan 10. A connecting pipe 12 is provided on the heating module 10. A check valve 13 is installed at one end of the connecting pipe 12. A telescopic hose 14 is fixed between the check valve 13 and the first air outlet 15. A mounting base 16 is provided on the hull structure 1. Reinforcing ribs 23 are provided on both sides of the mounting base 16. A storage compartment 17 is provided on the mounting base 16. One end of the storage compartment 17 is movably connected to the mounting plate 7. The mounting plate 7 can move horizontally within the storage compartment 17. A guide strip 22 is provided between the storage compartment 17 and the mounting plate 7. An internal hinge 18 is fixed at the other end of the storage compartment 17. The storage compartment 17 is movably connected to the hatch 19 through the internal hinge 18. A second air outlet 24 is opened below the hatch 19. A second hydraulic arm 20 is provided between the storage compartment 17 and the hatch 19.
[0032] Example 2:
[0033] like Figure 1-5As shown, the anchor winch 2 is fixed to the rib plate of the hull structure 1 by high-strength bolts, and its output shaft is connected to the anchor chain 3 by a detachable coupling. The end of the anchor chain 3 is connected to the anchor body 4 by a shackle. The anchor body is a Hall-type barless anchor with a weight ≥150kg, and its folded size matches the inner cavity of the storage compartment 17. The fixing seat 5 is welded between the hull structure 1 and the anchor winch 2. The material is marine corrosion-resistant steel with a thickness of 10mm, and triangular reinforcing ribs 23 are welded on both sides to improve torsional strength and bending modulus ≥1200N·m. The cylinder of the first hydraulic arm 6 is hinged to the fixing seat 5, and the piston rod end is connected to the mounting plate 7. The thrust is ≥8kN and the stroke is 1.2m. The mounting plate 7 is a rectangular steel plate of 800×600mm with a through hole 9 of 80mm in diameter for the anchor chain 3 to pass through. The through hole is embedded with a high-polymer wear-resistant bushing with a polytetrafluoroethylene coating, and the friction coefficient is ≤0.05 to reduce anchor chain wear. The fixing frame 8 is a U-shaped slot structure, welded to the upper surface of the mounting plate 7. The slot width matches the anchor chain link size tolerance of ±2mm, limiting the horizontal swing amplitude of the anchor chain to ≤15°. The storage compartment 17 is welded from salt spray resistant aluminum alloy (model 5083), with an epoxy resin coating on the inner wall. The edge of the door 19 is fitted with EPDM rubber sealing strips with an IP67 protection rating. The built-in hinge 18 adopts a stainless steel double-axis structure, supporting the 180° rotation of the door 19; the second hydraulic arm 20 has a thrust of 3kN, driving the door to open and close in ≤5 seconds. A second vent 24 with a diameter of 50mm is opened below the door 19, coaxially arranged with the first vent 15 on the mounting plate 7. The guide strip 22 is a PTFE-coated steel strip with a cross section of 20×10mm, longitudinally arranged along the inner wall of the storage compartment 17, cooperating with the side groove of the mounting plate 7, and the translation trajectory accuracy is controlled within ±2mm. Heating module 10 uses a PTC ceramic heating element with a power of 3kW and an outlet air temperature of 80℃±5℃. It is connected to fan 11 via a flange with an air volume of 12m³ / h. 3 / min. The connecting pipe 12 is a stainless steel corrugated pipe with a temperature resistance of 150℃. It is connected to the telescopic hose 14 made of silicone material via the check valve 13, and the length is suitable for a stroke of 1.2m. There are 4 high-pressure nozzles 21 evenly distributed on the lower surface of the mounting plate 7. The nozzles have a diameter of 1.5mm and are arranged in a staggered manner at a 15° angle. The working pressure is 10MPa, covering the entire length of the anchor chain.
[0034] Example 3:
[0035] like Figure 1-5As shown, during the anchoring stage: the second hydraulic arm 20 pushes the hatch 19 open → the first hydraulic arm 6 pushes the mounting plate 7 out of the hull by 1.2m → the anchor winch 2 releases the anchor chain 3, and the anchor body 4 falls to the seabed. During the anchor retrieval and cleaning stage: the anchor winch 2 retracts the anchor chain 3 → when the anchor chain enters the fixing frame 8 through the through hole 9, the high-pressure nozzle 21 sprays seawater to wash away the mud and sand for 2 minutes → after the anchor body 4 is locked in the fixing frame 8, the first hydraulic arm 6 retracts the mounting plate 7. During the drying and sealing stage: after the mounting plate 7 is fully inserted into the storage compartment 17, the blower 11 starts the hot air drying program at a temperature of 80℃ and a wind speed of 8m / s for 15 minutes, and the humid air is discharged from the second air outlet 24 → the second hydraulic arm 20 closes the hatch 19, forming a sealed anti-corrosion environment.
Claims
1. A stern structure for storing and concealing a positioning anchor, comprising a hull structure (1) characterized in that: The system includes an anchor winch (2), an anchor chain (3), a heating module (10), a fan (11), and a hatch (19). The anchor winch (2) is fixed to the hull structure (1). The anchor winch (2) and the anchor chain (3) are movably connected. One end of the anchor chain (3) is fixed with an anchor body (4). A fixed seat (5) is provided between the hull structure (1) and the anchor winch (2). A first hydraulic arm (6) is installed on one side of the fixed seat (5). The first hydraulic arm (6) is connected to a mounting plate (7). A fixing frame (8) is provided on the mounting plate (7). A through hole (9) is opened on the mounting plate (7). The anchor chain (3) passes through the through hole (9) and is movably connected to the fixing frame (8). A first vent hole (15) is opened below the mounting plate (7). The heating module (10) is installed on the hull structure (1). The heating module (10) is fixedly connected to the fan (11). The heating module (10) is provided with a connecting pipe (12). A check valve (13) is installed at one end of the connecting pipe (12). A telescopic hose (14) is fixed between the check valve (13) and the first air outlet (15). A mounting base (16) is provided on the hull structure (1). A storage compartment (17) is provided on the mounting base (16). One end of the storage compartment (17) is movably connected to the mounting plate (7). The mounting plate (7) can move horizontally inside the storage compartment (17). An internal hinge (18) is fixed at the other end of the storage compartment (17). The storage compartment (17) is movably connected to the hatch (19) through the internal hinge (18). A second hydraulic arm (20) is provided between the storage compartment (17) and the hatch (19).
2. The stern structure for storing and concealing the positioning anchor according to claim 1, characterized in that: A high-pressure nozzle (21) is provided on the mounting plate (7).
3. The stern structure for storing and concealing the positioning anchor according to claim 2, characterized in that: The high-pressure nozzles (21) are installed at the same level.
4. The stern structure for storing and concealing the positioning anchor according to claim 1, characterized in that: A guide strip (22) is provided between the storage compartment (17) and the mounting plate (7).
5. The stern structure for storing and concealing the positioning anchor according to claim 1, characterized in that: The mounting base (16) is provided with reinforcing ribs (23) on both sides.
6. The stern structure for storing and concealing the positioning anchor according to claim 1, characterized in that: A second air vent (24) is provided below the hatch (19).