Marine manual shallow water positioning anchor

Abstract

The invention discloses a manual shallow water positioning anchor for a ship, and belongs to the technical field of ship equipment.The manual shallow water positioning anchor for the ship comprises a multi-claw ship anchor, a steel chain is fixedly connected to the top end of the multi-claw ship anchor, and a first-stage automatic fracture connecting assembly is arranged at the end, away from the multi-claw ship anchor, of the steel chain; the other end of the first-stage automatic fracture connecting assembly is connected with a sectional type steel cable, a plurality of second-stage automatic fracture connecting assemblies are arranged on the sectional type steel cable, a steel cable winding wheel is arranged at the end, away from the first-stage automatic fracture connecting assembly, of the sectional type steel cable, and the sectional type steel cable is wound on the side face of the steel cable winding wheel. A gear motor is arranged on the side face of the steel cable winding wheel. According to the ship anchor, a ship can be fixed under the normal condition, hard connection with the ship can be automatically disconnected when water flow accelerates, the ship is prevented from being damaged due to traction of the anchor, adaptability to different water area conditions is achieved, and the practical value of the whole ship anchor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ship equipment, and more specifically to a manual shallow water positioning anchor for a ship. Background Art

[0002] In complex water environments, boats need reliable anchors to ensure that they can stay in place stably. However, traditional anchors may not be able to provide sufficient fixing force in shallow water environments or when the water flow is slow. In the event of a sudden increase in water flow, the rigid connection between the traditional anchor and the boat may cause damage to the boat or cause it to capsize, posing a safety hazard.

[0003] The existing technology lacks a manual anchor that can take into account both shallow water and rapids environments, which can not only fix the boat under normal conditions, but also automatically disconnect the hard connection with the boat when the water flow accelerates to prevent the boat from being damaged by the traction of the anchor. Therefore, it is of great practical value to develop a manual shallow water anchor that can adapt to different water conditions and has an automatic disconnection function.

[0004] Therefore, in view of this, the existing structure is studied and improved, and a manual shallow water positioning anchor for ships is provided, in order to achieve the purpose of having more practical value. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a manual shallow water positioning anchor for ships, which can not only fix the ship under normal circumstances, but also automatically disconnect the hard connection with the boat when the water flow accelerates, thereby preventing the boat from being damaged by the traction of the anchor, achieving adaptability to different water conditions and improving the practical value of the entire anchor.

[0007] 2. Technical solution

[0008] To solve the above problems, the present invention adopts the following technical solutions.

[0009] A manual shallow water positioning anchor for a ship, comprising a multi-claw anchor, the top of the multi-claw anchor is fixedly connected with a steel chain, one end of the steel chain away from the multi-claw anchor is provided with a first-level automatic breaking connection assembly, the other end of the first-level automatic breaking connection assembly is connected with another end of the steel chain, the steel chain is fixedly connected with a segmented steel cable, a plurality of second-level automatic breaking connection assemblies are provided on the segmented steel cable, one end of the segmented steel cable away from the first-level automatic breaking connection assembly is provided with a steel cable winding wheel, the segmented steel cable is wound on the side of the steel cable winding wheel, a reduction motor is provided on the side of the steel cable winding wheel, the output end of the reduction motor is transmission-connected to the central shaft of the steel cable winding wheel through a coupling, and the reduction motor is controlled by a remote end through a signal;

[0010] The first-level automatic breaking connection assembly includes a first shell and a second shell, the first shell and the second shell are fitted together to form a shell structure, an upper layered sealing plate and a lower layered sealing plate are fixedly installed inside the first shell, the upper layered sealing plate and the lower layered sealing plate have the same structure and are arranged parallel to each other, a free rotating shaft with a fan plate is arranged inside the first shell, the top end of the free rotating shaft with the fan plate passes through the upper layered sealing plate and is fixedly connected to a lower steel disc, an upper steel disc is arranged at the top end of the lower steel disc, three sets of bolt structures are arranged between the lower steel disc and the upper steel disc, and the top end of the upper steel disc is fixed to one end of a steel chain;

[0011] The top end of the free rotating shaft with the fan plate penetrates the lower layered sealing plate and is threadedly connected with a steel limiting disc, a sliding hole is opened on the steel limiting disc, and a straight rod is slidably connected through the sliding hole, the top end of the straight rod is fixed to the bottom end of the lower layered sealing plate, the bottom end of the straight rod is fixed to the inner bottom of the first shell, and a plurality of spring members are fixedly installed between the top end of the steel limiting disc and the bottom end of the lower layered sealing plate;

[0012] The structure of the secondary automatic breaking connection assembly is the same as that of the primary automatic breaking connection assembly.

[0013] Furthermore, the multi-claw ship anchor has six anchor claws, and each anchor claw is provided with a tooth tip structure.

[0014] Furthermore, the first shell body is located between the upper layer sealing plate and the lower layer sealing plate and is a closed half shell structure, and the second shell body is located between the upper layer sealing plate and the lower layer sealing plate and is an open shell structure.

[0015] Furthermore, a plurality of plates are fixedly disposed on the sides of the first shell and the second shell, and a butt bolt is disposed between two plates located at opposite positions, and the two plates are locked by the butt bolt;

[0016] The first shell and the second shell are provided with sealing rubber rings on the contact surfaces.

[0017] Furthermore, the middle parts of the upper layer sealing plate and the lower layer sealing plate are both provided with through holes, a No. 1 sealing ring is provided inside the through hole of the upper layer sealing plate, and a No. 2 sealing ring sleeve is provided inside the through hole of the lower layer sealing plate.

[0018] Furthermore, the lower steel disc is provided with a nut embedding hole used in conjunction with the bolt structure;

[0019] The upper steel disc is provided with bolt head embedding holes used in conjunction with the bolt structure.

[0020] Furthermore, a connecting block is fixedly installed at the bottom end of the first shell, the bottom end of the connecting block is fixed to a steel chain, a light sheet is fixedly installed on the side of the connecting block, and a battery used in conjunction with the light sheet is fixedly installed inside the connecting block.

[0021] Furthermore, a threaded wire structure is provided on the side of the free-rotating shaft with the fan plate and directly below the lower layered sealing plate, and the free-rotating shaft with the fan plate is threadedly connected to the steel limiting disc through the threaded wire structure.

[0022] Furthermore, the shear resistance of the bolt structure in the secondary automatic breaking connection assembly is smaller than the shear resistance of the bolt structure in the primary automatic breaking connection assembly.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] In this scheme, the device consists of a multi-claw anchor, a steel chain, a primary automatic breaking connection component, a segmented steel cable, a secondary automatic breaking connection component, a steel cable winding wheel and a reduction motor, wherein the steel chain and the segmented steel cable are used to connect the multi-claw anchor, the primary automatic breaking connection component, the secondary automatic breaking connection component and the steel cable winding wheel, the multi-claw anchor can contact and lock the bottom mud or rock surface, and the primary automatic breaking connection component and the secondary automatic breaking connection component are distributed in different positions, when the water flow accelerates and reaches the load limit of the primary automatic breaking connection component or the secondary automatic breaking connection component, the primary automatic breaking connection component or the secondary automatic breaking connection component is automatically disconnected, so that it can not only fix the ship under normal circumstances, but also automatically disconnect the hard connection with the boat when the water flow accelerates, preventing the boat from being damaged by the traction of the anchor, realizing adaptability to different water conditions, and improving the practical value of the entire anchor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a three-dimensional structural schematic diagram of the multi-claw anchor and the first-level automatic breaking connection component part of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the secondary automatic breaking connection component part in the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the primary automatic breaking connection component after being disassembled in the present invention;

[0030] Figure 5 It is a schematic diagram of the structure inside the first shell in the present invention;

[0031] Figure 6 Schematic diagram of the free-rotating shaft with fan plate and its related connection structure in the present invention Figure 1 ;

[0032] Figure 7 Schematic diagram of the free-rotating shaft with fan plate and its related connection structure in the present invention Figure 2 .

[0033] Description of the numbers in the figure:

[0034] 1. Multi-claw anchor;

[0035] 2. Steel chain;

[0036] 3. First-level automatic breaking connection components;

[0037] 301, first housing; 3011, mounting plate; 3012, docking bolts; 3013, connecting block; 3014, luminous lamp sheet;

[0038] 302, second shell;

[0039] 303, upper layer sealing plate; 3031, No. 1 sealing ring;

[0040] 304, lower layer sealing plate; 3041, No. 2 sealing ring;

[0041] 305. Free-spindle with fan plate;

[0042] 306, lower steel disc; 3061, nut embedding hole;

[0043] 307, upper steel disc; 3071, bolt head embedding hole;

[0044] 308. Bolt structure;

[0045] 309, steel limit disc; 3091, sliding hole;

[0046] 310, straight bar;

[0047] 311, spring parts;

[0048] 4. Segmented steel cable;

[0049] 5. Secondary automatic breaking connection assembly;

[0050] 6. Cable winding wheel;

[0051] 7. Gear motor. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0053] Embodiment 1:

[0054] See also Figure 1 - Figure 7 A manual shallow water positioning anchor for a ship comprises a multi-claw anchor 1, which is a corrosion-resistant metal structure.

[0055] A steel chain 2 is fixedly connected to the top of the multi-claw anchor 1, and a first-level automatic breaking connection component 3 is arranged at one end of the steel chain 2 away from the multi-claw anchor 1, and the other end of the first-level automatic breaking connection component 3 is connected to the other end of the steel chain 2, and the steel chain 2 is fixedly connected to a segmented steel cable 4, and a plurality of second-level automatic breaking connection components 5 are arranged on the segmented steel cable 4, and a steel cable winding wheel 6 is arranged at one end of the segmented steel cable 4 away from the first-level automatic breaking connection component 3, and the segmented steel cable 4 is wound on the side of the steel cable winding wheel 6, and a reduction motor 7 is arranged on the side of the steel cable winding wheel 6, and the output end of the reduction motor 7 is connected to the central shaft of the steel cable winding wheel 6 through a coupling, and the reduction motor 7 is controlled by a signal from the remote end.

[0056] The device is composed of a multi-claw anchor 1, a steel chain 2, a primary automatic breaking connection component 3, a segmented steel cable 4, a secondary automatic breaking connection component 5, a steel cable winding wheel 6 and a reduction motor 7. The steel chain 2 and the segmented steel cable 4 are used to connect the multi-claw anchor 1, the primary automatic breaking connection component 3, the secondary automatic breaking connection component 5 and the steel cable winding wheel 6. The multi-claw anchor 1 can contact and lock the bottom mud or rock surface, and the primary automatic breaking connection component 3 and the secondary automatic breaking connection component 5 are distributed at different positions. When the water flows, the multi-claw anchor 1 can contact and lock the bottom mud or rock surface, and the primary automatic breaking connection component 3 and the secondary automatic breaking connection component 5 ... When the flow speed accelerates and reaches the load limit of the first-level automatic breaking connection component 3 or the second-level automatic breaking connection component 5, the first-level automatic breaking connection component 3 or the second-level automatic breaking connection component 5 is automatically disconnected, which can not only fix the ship under normal circumstances, but also automatically disconnect the hard connection with the boat when the water flow accelerates, preventing the boat from being damaged by the traction of the anchor, realizing adaptability to different water conditions, and improving the practical value of the entire anchor. At the same time, the reduction motor 7 controlled by the signal can realize the remote release and anchor collection operations of the anchor.

[0057] The first-level automatic breaking connection assembly 3 includes a first shell 301 and a second shell 302, which are fitted together to form a shell structure. An upper layered sealing plate 303 and a lower layered sealing plate 304 are fixedly installed inside the first shell 301. The upper layered sealing plate 303 and the lower layered sealing plate 304 have the same structure and are arranged parallel to each other. A free rotating shaft 305 with a fan plate is arranged inside the first shell 301. The top end of the free rotating shaft 305 with a fan plate passes through the upper layered sealing plate 303 and is fixedly connected with a lower steel disc 306. An upper steel disc 307 is arranged at the top end of the lower steel disc 306. Three sets of bolt structures 308 are arranged between the lower steel disc 306 and the upper steel disc 307. The top end of the upper steel disc 307 is fixed to one end of the steel chain 2.

[0058] The top end of the free rotating shaft 305 with the fan plate passes through the lower layered sealing plate 304 and is threadedly connected to a steel limiting disc 309. A sliding hole 3091 is provided on the steel limiting disc 309, and a straight rod 310 is slidably connected through the sliding hole 3091. The top end of the straight rod 310 is fixed to the bottom end of the lower layered sealing plate 304, and the bottom end of the straight rod 310 is fixed to the inner bottom of the first shell 301. A number of spring members 311 are fixedly installed between the top end of the steel limiting disc 309 and the bottom end of the lower layered sealing plate 304.

[0059] After the multi-claw anchor 1 is put into the water, the first section of the steel chain 2, the shell structure, the free rotating shaft 305 with the fan plate, the lower steel disc 306, the upper steel disc 307, the bolt structure 308 and the second section of the steel chain 2 form a complete connection structure. At the same time, the water flow will generate a thrust on the free rotating shaft 305 with the fan plate and make it have a tendency to rotate. Since the spring member 311 is always in a compressed state, it will push the position of the steel limit disc 309 under the action of the elastic force, thereby The threaded connection between the steel limiting disc 309 and the free rotating shaft 305 with the fan plate can inhibit the rotation tendency of the free rotating shaft 305 with the fan plate. If the water flow velocity increases sharply and exceeds the load-bearing limit of the first-level automatic breaking connection component 3, the free rotating shaft 305 with the fan plate rotates and uses the shear force to cut off the bolt structure 308. At this time, the lower steel disc 306 and the upper steel disc 307 are separated, realizing the automatic breaking of the first-level automatic breaking connection component 3.

[0060] The structure of the secondary automatic breaking connection assembly 5 is the same as that of the primary automatic breaking connection assembly 3 .

[0061] The working mode of the secondary automatic breaking connection assembly 5 is the same as that of the primary automatic breaking connection assembly 3 .

[0062] Embodiment 2:

[0063] Based on the above embodiment 1, further description is given.

[0064] See also Figure 1 and Figure 2 Specifically, the multi-claw anchor 1 has six claws, and each claw is provided with a tooth tip structure.

[0065] In this way, after the multi-claw anchor 1 touches the bottom, the stability of the connection between the multi-claw anchor 1 and the bottom mud or rock can be improved.

[0066] See also Figure 2 Specifically, the first shell 301 and the portion between the upper layer sealing plate 303 and the lower layer sealing plate 304 is a closed semi-shell structure, and the second shell 302 and the portion between the upper layer sealing plate 303 and the lower layer sealing plate 304 is an open shell structure.

[0067] Since the second shell 302 is an open shell structure, it is used in conjunction with the first shell 301 and the free rotating shaft 305 with the fan plate, which can effectively ensure that seawater flows into the hollow part of the second shell 302, thereby pushing the free rotating shaft 305 with the fan plate, thereby ensuring that the free rotating shaft 305 with the fan plate can rotate in a fixed direction.

[0068] See also Figure 4 and Figure 5Specifically, a plurality of plates 3011 are fixedly provided on the sides of the first shell 301 and the second shell 302 , and a docking bolt 3012 is provided between two plates 3011 located at opposite positions, and the two plates 3011 are locked by the docking bolt 3012 .

[0069] By using the mounting plate 3011 and the docking bolts 3012 , the first shell 301 and the second shell 302 can be quickly installed.

[0070] The first shell 301 and the second shell 302 are provided with sealing rubber rings on the contacting surfaces.

[0071] The sealing rubber ring can be used to prevent seawater from entering the first shell 301 and the second shell 302 through the connection gap between the first shell 301 and the second shell 302 .

[0072] Specifically, a through hole is provided in the middle of the upper layer sealing plate 303 and the lower layer sealing plate 304 . A No. 1 sealing ring 3031 is provided inside the through hole of the upper layer sealing plate 303 , and a No. 2 sealing ring sleeve 3041 is provided inside the through hole of the lower layer sealing plate 304 .

[0073] The first sealing ring 3031 and the second sealing ring sleeve 3041 can be used to prevent seawater from penetrating into the first shell 301 and the second shell 302 through the through hole.

[0074] See also Figure 6 and Figure 7 Specifically, a nut embedding hole 3061 for use with the bolt structure 308 is opened on the lower steel disc 306.

[0075] By using the nut embedding hole 3061 , the nut in the bolt structure 308 can be prevented from rotating, thereby facilitating the unidirectional rotation of the bolt of the bolt structure 308 .

[0076] The upper steel disc 307 is provided with a bolt head embedding hole 3071 used in conjunction with the bolt structure 308. The nut embedding hole 3061 can prevent the bolts in the bolt structure 308 from rotating due to the impact of water flow.

[0077] See also Figure 4 and Figure 5 Specifically, a connecting block 3013 is fixedly installed at the bottom end of the first shell 301, the bottom end of the connecting block 3013 is fixed to the steel chain 2, a light-emitting lamp 3014 is fixedly installed on the side of the connecting block 3013, and a battery used in conjunction with the light-emitting lamp 3014 is fixedly installed inside the connecting block 3013.

[0078] After the connecting block 3013 is put into the water, the battery provides electric energy to the light-emitting lamp sheet 3014, and the light-emitting lamp sheet 3014 emits light, so that when the primary automatic breaking connecting component 3 or the secondary automatic breaking connecting component 5 breaks, the part below the breaking point can be easily retrieved.

[0079] See also Figure 5 , Figure 6 and Figure 7 Specifically, a threaded wire structure is provided on the side of the free rotating shaft 305 with the fan plate and directly below the lower layered sealing plate 304, and the free rotating shaft 305 with the fan plate is threadedly connected to the steel limiting disc 309 through the threaded wire structure.

[0080] The threaded wire structure is used to realize a threaded connection between the free rotating shaft 305 with the fan plate and the steel limiting disk 309. When the free rotating shaft 305 with the fan plate rotates, the height of the steel limiting disk 309 changes, and the spring member 311 will generate resistance to the height change of the steel limiting disk 309, thereby preventing the low-flow water flow from pushing the free rotating shaft 305 with the fan plate to rotate.

[0081] See also Figure 1 , Figure 2 and Figure 3 Specifically, the shear resistance of the bolt structure 308 in the secondary automatic breaking connection assembly 5 is smaller than the shear resistance of the bolt structure 308 in the primary automatic breaking connection assembly 3 .

[0082] When the anchor is dropped into the water, the height of the secondary automatic breaking connection component 5 is higher than that of the primary automatic breaking connection component 3. If the water flow does not reach the breaking condition of the primary automatic breaking connection component 3, the secondary automatic breaking connection component 5 can also automatically break to achieve emergency avoidance of the hull.

[0083] Working principle:

[0084] After the multi-claw anchor 1 is put into the water, the steel chain 2 and the segmented steel cable 4 are used to connect the multi-claw anchor 1, the first-level automatic breaking connection component 3, the second-level automatic breaking connection component 5 and the steel cable winding wheel 6. The multi-claw anchor 1 can contact and lock the bottom mud or rock surface.

[0085] The first section of steel chain 2, the shell structure, the free rotating shaft 305 with fan plates, the lower steel disc 306, the upper steel disc 307, the bolt structure 308 and the second section of steel chain 2 form a complete connection structure. At the same time, the water flow will generate thrust on the free rotating shaft 305 with fan plates and make it tend to rotate. Since the spring member 311 is always in a compressed state, the steel limiting disc 309 will be pushed under the action of elastic force. Then, the threaded connection between the steel limiting disc 309 and the free rotating shaft 305 with fan plates will inhibit the rotation tendency of the free rotating shaft 305 with fan plates. If the water flow speed increases sharply and exceeds the load limit of the first-level automatic breaking connection component 3, the free rotating shaft 305 with fan plates rotates and uses the shear force to cut off the bolt structure 308. At this time, the lower steel disc 306 and the upper steel disc 307 are separated, realizing the automatic breaking of the first-level automatic breaking connection component 3.

[0086] At the same time, since the height of the secondary automatic breaking connection component 5 is higher than that of the primary automatic breaking connection component 3, if the water flow does not reach the breaking condition of the primary automatic breaking connection component 3, the secondary automatic breaking connection component 5 can also be automatically broken to achieve emergency evacuation of the hull.

[0087] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A manual shallow water positioning anchor for a ship, comprising a multi-claw anchor (1), the top of which is fixedly connected with a steel chain (2), characterized in that: The end of the steel chain (2) away from the multi-claw anchor (1) is provided with a primary automatic breaking connection component (3), the other end of the primary automatic breaking connection component (3) is connected to the other end of the steel chain (2), the steel chain (2) is fixedly connected with a segmented steel cable (4), the segmented steel cable (4) is provided with a plurality of secondary automatic breaking connection components (5), the end of the segmented steel cable (4) away from the primary automatic breaking connection component (3) is provided with a steel cable winding wheel (6), the segmented steel cable (4) is wound on the side of the steel cable winding wheel (6), the side of the steel cable winding wheel (6) is provided with a reduction motor (7), the output end of the reduction motor (7) is connected to the central shaft of the steel cable winding wheel (6) through a coupling, and the reduction motor (7) is controlled by a remote end through a signal; The primary automatic breaking connection assembly (3) comprises a first shell (301) and a second shell (302), wherein the first shell (301) and the second shell (302) are attached to each other to form a shell structure, an upper layered sealing plate (303) and a lower layered sealing plate (304) are fixedly installed inside the first shell (301), the upper layered sealing plate (303) and the lower layered sealing plate (304) have the same structure and are arranged parallel to each other, and the first shell (301) is provided inside A free-rotating shaft (305) with a fan plate, the top end of the free-rotating shaft (305) with a fan plate passes through the upper layer sealing plate (303) and is fixedly connected to a lower layer steel disc (306), an upper layer steel disc (307) is arranged at the top end of the lower layer steel disc (306), three groups of bolt structures (308) are arranged between the lower layer steel disc (306) and the upper layer steel disc (307), and the top end of the upper layer steel disc (307) is fixed to one end of a steel chain (2); The top end of the free rotating shaft (305) with the fan plate passes through the lower layered sealing plate (304) and is threadedly connected to a steel limiting disc (309). A sliding hole (3091) is provided on the steel limiting disc (309) and a straight rod (310) is slidably connected through the sliding hole (3091). The top end of the straight rod (310) is fixed to the bottom end of the lower layered sealing plate (304), and the bottom end of the straight rod (310) is fixed to the inner bottom of the first shell (301). A plurality of spring members (311) are fixedly installed between the top end of the steel limiting disc (309) and the bottom end of the lower layered sealing plate (304). The structure of the secondary automatic breaking connection assembly (5) is the same as that of the primary automatic breaking connection assembly (3).

2. A manual shallow water positioning anchor for a ship according to claim 1, characterized in that: The multi-claw ship anchor (1) has six anchor claws, and each anchor claw is provided with a tooth tip structure.

3. A manual shallow water positioning anchor for a ship according to claim 1, characterized in that: The first shell (301) is located between the upper layer sealing plate (303) and the lower layer sealing plate (304) and is a closed semi-shell structure, while the second shell (302) is located between the upper layer sealing plate (303) and the lower layer sealing plate (304) and is an open shell structure.

4. A manual shallow water positioning anchor for a ship according to claim 1, characterized in that: A plurality of plates (3011) are fixedly arranged on the sides of the first shell (301) and the second shell (302), and a butt bolt (3012) is arranged between two plates (3011) located at opposite positions, and the two plates (3011) are locked by the butt bolt (3012); The first shell (301) and the second shell (302) are provided with sealing rubber rings on the contact surfaces.

5. A manual shallow water positioning anchor for a ship according to claim 1, characterized in that: The middle parts of the upper layered sealing plate (303) and the lower layered sealing plate (304) are both provided with through holes, a No. 1 sealing ring (3031) is provided inside the through hole of the upper layered sealing plate (303), and a No. 2 sealing ring sleeve (3041) is provided inside the through hole of the lower layered sealing plate (304).

6. A manual shallow water positioning anchor for a ship according to claim 1, characterized in that: The lower steel disc (306) is provided with a nut embedding hole (3061) for use with the bolt structure (308); The upper steel disc (307) is provided with a bolt head embedding hole (3071) for use with the bolt structure (308).

7. A manual shallow water positioning anchor for a ship according to claim 1, characterized in that: A connecting block (3013) is fixedly mounted on the bottom end of the first shell (301), the bottom end of the connecting block (3013) is fixed to the steel chain (2), a light-emitting light sheet (3014) is fixedly mounted on the side of the connecting block (3013), and a storage battery used in conjunction with the light-emitting light sheet (3014) is fixedly mounted inside the connecting block (3013).

8. A manual shallow water positioning anchor for a ship according to claim 1, characterized in that: A threaded structure is provided on the side of the free rotating shaft (305) with the fan plate and directly below the lower layered sealing plate (304). The free rotating shaft (305) with the fan plate is threadedly connected to the steel limiting disc (309) through the threaded structure.

9. A manual shallow water positioning anchor for a ship according to claim 1, characterized in that: The shear resistance of the bolt structure (308) in the secondary automatic breaking connection assembly (5) is smaller than the shear resistance of the bolt structure (308) in the primary automatic breaking connection assembly (3).

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