Recyclable umbrella type torpedo anchor

Abstract

The invention relates to the technical field of torpedo anchors, in particular to a recyclable umbrella type torpedo anchor. The device comprises a mooring line, an auxiliary cable, a torpedo anchor shell, a wing plate, a restraint ring, a core tube, a traction strip and a limiting snap ring, the top of the torpedo anchor shell is connected with the mooring line, a conical head is arranged at the bottom of the torpedo anchor shell, the core tube is composed of a plurality of tube petals, the bottom of each tube petal is hinged to the conical head, the wing plate is hinged to the torpedo anchor shell, and the limiting snap ring is connected with the wing plate through the traction strip. The auxiliary cable is connected with the restraint ring; when the torpedo anchor is thrown, the wing plate clings to the torpedo anchor shell; when the torpedo anchor works, the wing plates are opened in an umbrella-shaped structure; when the torpedo anchor is recycled, the umbrella-shaped structure of the wing plate is damaged through the auxiliary cable. According to the device, the torpedo anchor and the umbrella-shaped structure are fused, the device penetrates into the seabed with small resistance, the umbrella-shaped structure is opened to improve the bearing capacity after the device is subjected to the tension of the mooring line, and the umbrella-shaped structure is damaged due to loss of constraint after the auxiliary cable is tensioned, so that the bearing capacity is reduced, and the device can be smoothly recycled.

Description

Technical Field

[0001] The invention relates to the technical field of torpedo anchors, in particular to a recoverable umbrella-type torpedo anchor. Background Art

[0002] Existing torpedo anchor technologies include: CN114954786A discloses a torpedo anchor with a retractable anchor plate and its installation method. The invention comprises an anchor cable, an anchor body, an anchor tip, a plurality of anchor wings, a plurality of retractable anchor plate structures and a plurality of electromagnetic deviation correction devices. The electromagnetic deviation correction devices keep the torpedo anchor in a vertical state during the falling process, thereby increasing the penetration depth of the torpedo anchor and improving the positioning accuracy; the retractable anchor plate structure increases the contact area between the torpedo anchor body and the seabed soil layer and the normal force bearing area, thereby increasing the ultimate bearing capacity and stability.

[0003] CN115367050A submarine torpedo anchor body and grouting reinforcement method thereof. The invention comprises an anchor rod, an anchor plate eye, an anchor tip, an anchor wing and a deep-sea high-strength valve. The invention can diffuse the grouting slurry in multiple steps to surround the anchor body to form a grouting block, thereby blocking the uncertainty of the seabed soil and seawater on the subsequent grouting diffusion.

[0004] CN218703742U torpedo anchor. The invention includes an anchor body, a connecting structure, a counterweight block and a cable. The anchor of the invention can realize the recovery and reuse of the counterweight part after the anchor body is inserted into the seabed, thereby avoiding the waste of resources.

[0005] CN116080823A A torpedo anchor with an expansion airbag. The invention includes an anchor body, anchor wings and an anchor head, and an expansion control airbag is arranged between the anchor body and the anchor head. After the electric heating control device is turned on, the air in the chamber will be slowly heated to the decomposition temperature of sodium azide. At this time, the sodium azide will quickly decompose and release a huge amount of nitrogen, which will expand the folded airbag, increase the horizontal cross-sectional area of ​​the torpedo anchor, and improve the pull-out bearing capacity of the torpedo anchor.

[0006] CN212267764U discloses a new type of torpedo anchor based on the stress form of a flat anchor. The invention comprises an anchor body, a tail fin, a wedge-shaped anchor head for deflecting the anchor body, and a mooring ring. In the actual use of the invention, the anchor body will gradually become perpendicular to the stress direction under the action of the anchor chain, the stress area of ​​the torpedo anchor is expanded, and the ultimate pull-out bearing capacity is greatly improved.

[0007] CN218431623U discloses a torpedo anchor with a freely retractable anchor claw. The invention comprises an anchor body, a transmission device located inside the anchor body and a movable anchor claw. The invention extends or retracts the anchor claw by pulling a traction bar to rotate a gear, thereby achieving the effect of improving the bearing capacity and being recyclable.

[0008] CN212267765U discloses a torpedo anchor with an additional anchor body that can be unfolded and turned outward. The invention mainly consists of an anchor body, anchor wings, an additional anchor body, a fixed hinge and an anchor head. However, when the torpedo anchor is subjected to tension, the force acting on the additional anchor body generates a torque on the fixed hinge of the anchor head, and the additional anchor body unfolds and turns outward under the action of this torque, thereby expanding the force-bearing area.

[0009] CN115303417A A retrievable side-span torpedo anchor suitable for deep-sea anchoring. The invention comprises an anchor head, an anchor body is welded on the top of the anchor head, and the bottom ends of both sides of the anchor body are rotatably connected to the wing plates, and short chains are fixedly arranged on opposite sides of the two sets of wing plates. The invention releases the constraint of the long chain by pulling the recovery steel cable upward, flips the wing plate parallel to the anchor body, and returns the wing plate resistance to the minimum state, so that the side-span torpedo anchor can be recovered upward by pulling the main steel cable, making the side-span torpedo anchor retrievable.

[0010] CN107933828A discloses a novel torpedo anchor with an openable anchor head and an installation method thereof. The invention comprises an anchor head composed of four conical plates, a guide rod, an anchor body, an anchor tail cover plate, a mooring ring, etc. The invention increases the force bearing area of ​​the anchor body by opening the conical plate of the torpedo anchor head, thereby increasing the bearing capacity of the anchor body.

[0011] CN108860473B discloses a torpedo anchor with partially deployable tail fins. The invention mainly comprises a rotating tail fin and a fixed tail fin. After penetrating the seabed, the anchor chain applies tension to pull the torpedo anchor up a certain distance, so that the rotating tail fin rotates to be fully deployed. After the rotating tail fin is deployed, it can hold a large amount of seabed soil.

[0012] There are still some problems with the existing torpedo anchors. The specific problems are described as follows: (1) Although some torpedo anchors have enhanced their bearing capacity through deformation, they have not considered how to recover them; (2) Some fish anchors are considered for recycling, but only part of the structure can be recycled and cannot be fully reused; (3) Some fish anchors consider increasing bearing capacity and recovery at the same time. However, the key parts involved in recovery are prone to deformation when bearing loads, and their ability to resist vertical loads is weak, thus affecting recovery. Summary of the invention

[0013] The invention provides a recoverable umbrella-type torpedo anchor, aiming to solve the technical problems existing in the existing torpedo anchor.

[0014] The present invention provides a recoverable umbrella-type torpedo anchor, comprising a mooring line, an auxiliary rope, a torpedo anchor shell, a wing plate, a restraining ring, a core tube, a traction strip, and a limiting snap ring. The top of the torpedo anchor shell is connected to the mooring line, the bottom of the torpedo anchor shell is provided with a cone head, the core tube is composed of a plurality of cylinder petals, the bottom of each cylinder petal is hinged to the cone head, the wing plate is hinged to the torpedo anchor shell, the limiting snap ring is connected to the wing plate through the traction strip, and the auxiliary rope is connected to the restraining ring; When the torpedo anchor is deployed, the restraint ring is sleeved on the top of the core tube, the limit clamp ring is clamped in the core tube, and the wing plate is closely attached to the torpedo anchor shell; When the torpedo anchor is working, the mooring line is tensioned to make the wing plate open in an umbrella-shaped structure; When the torpedo anchor is recovered, the auxiliary rope is tensioned to separate the restraining ring from the top of the core tube, the tube petals are unfolded and the limiting clamp ring is separated from the core tube to destroy the umbrella-shaped structure of the wing plate.

[0015] As a further improvement of the present invention, the wing plate is hinged to the outside of the torpedo anchor shell, the core tube is located inside the torpedo anchor shell, and the torpedo anchor shell is provided with shell holes for the traction strip and the limiting clamp ring to enter and exit.

[0016] As a further improvement of the present invention, when the torpedo anchor is dropped, the traction bar is retracted inside the torpedo anchor shell, and one end of the traction bar passes through the hole of the shell and is connected to the wing plate. When the torpedo anchor is working, the traction bar is tightened and one end passes through the hole of the shell and is connected to the wing plate. When the torpedo anchor is recovered, the traction bar and the limit clamp pass through the hole of the shell.

[0017] As a further improvement of the present invention, the limit clamp includes a limit head, a connecting rod, and a traction ring. The two ends of the connecting rod are respectively connected to the limit head and the traction ring. The traction ring is connected to the traction bar. The connecting rod passes through the core tube, and the limit head is clamped in the core tube.

[0018] As a further improvement of the present invention, the tube petals are plate-like structures, and a plurality of the tube petals form a hollow core tube. The side edges of the tube petals are provided with limiting concave edges. When the core tube is constrained, the limiting concave edges of two adjacent tube petals are connected to form a limiting hole. The connecting rod passes through the limiting hole. The diameter of the limiting hole is larger than the rod diameter of the connecting rod and smaller than the width of the limiting head.

[0019] As a further improvement of the present invention, the cylinder petals are block structures, and a plurality of the cylinder petals form a solid core cylinder. The sides of the cylinder petals are provided with limiting grooves adapted to the limiting head and the connecting rod. When the core cylinder is constrained, the limiting grooves of two adjacent cylinder petals are connected to form a limiting chamber, and the limiting head and the connecting rod are stuck in the limiting chamber.

[0020] As a further improvement of the present invention, the bottom of the tube petal is provided with an avoidance chamfer to provide expansion space for the bottom of the tube petal.

[0021] As a further improvement of the present invention, a step is provided on the top of the tube petal. When a plurality of the tube petals are constrained, the plurality of steps form a boss on the top of the core tube, and the constraining hoop is on the boss.

[0022] As a further improvement of the present invention, a first convex foot is provided on the bottom of the tube petal, a second convex foot is provided on the cone head, and the first convex foot and the second convex foot are hingedly connected via a rotating shaft.

[0023] As a further improvement of the present invention, when the torpedo anchor is recovered, the restraint ring is separated from the top of the core tube by tensioning the auxiliary rope, or the restraint ring is separated from the top of the core tube by hot melting the restraint ring through the auxiliary rope.

[0024] The beneficial effects of the present invention are as follows: the device integrates the torpedo anchor and the umbrella structure, penetrates the seabed with less resistance according to the installation method of the torpedo anchor, opens the umbrella structure to increase the bearing capacity after being pulled by the mooring line, and after the auxiliary cable is tensioned, the umbrella structure will be destroyed due to the loss of constraint, thereby reducing the bearing capacity and can be smoothly recovered. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall structural diagram of the recoverable umbrella-type torpedo anchor of the present invention in the deployed state; Figure 2 It is an overall structural diagram of the recoverable umbrella-type torpedo anchor of the present invention in a working state; Figure 3 It is an overall structural diagram of the recoverable umbrella-type torpedo anchor of the present invention in the recovered state; Figure 4 It is a structural diagram of the cooperation of the core tube, the restraining ring and the limiting clamp ring in the present invention; Figure 5 It is the structure when the core tube of the present invention is unfolded; Figure 6 It is a structural diagram of the limiting clamp ring in the present invention; Figure 7 This is the first type of structure of the tube valve in the present invention; Figure 8 This is the second type of structure of the tube valve in the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] like Figures 1 to 5As shown, a recoverable umbrella-type torpedo anchor of the present invention comprises a mooring line 7, an auxiliary rope 8, a torpedo anchor shell 1, a wing plate 2, a restraining ring 6, a core tube 5, a traction bar 3, and a limiting snap ring 4. The top of the torpedo anchor shell 1 is connected to the mooring line 7, a cone head 11 is provided at the bottom of the torpedo anchor shell 1, the core tube 5 is composed of a plurality of cylinder petals 51, and the bottom of each cylinder petal 51 is hinged on the cone head 11, the wing plate 2 is hinged on the torpedo anchor shell 1, the limiting snap ring 4 is connected to the wing plate 2 through the traction bar 3, and the auxiliary rope 8 is connected to the restraining ring 6; When the torpedo anchor is deployed, the restraining ring 6 is sleeved on the top of the core tube 5, the limiting clamp ring 4 is clamped in the core tube 5, and the wing plate 2 is kept closed and close to the torpedo anchor shell 1 by the water flow during descent; When the torpedo anchor is working, the mooring line 7 is tensioned to open the wing plate 2 in an umbrella-shaped structure; When the torpedo anchor is recovered, the restraint ring 6 is separated from the top of the core tube 5 through the auxiliary rope 8, the tube petals 51 are unfolded and the limiting clamp ring 4 is separated from the core tube 5 to destroy the umbrella-shaped structure of the wing plate 2.

[0028] During the installation and delivery phase of the torpedo anchor, the torpedo anchor is dropped at a predetermined position and penetrates into the seabed by its own weight; during the working phase, the mooring line 7 is tensioned to open the umbrella structure to enhance the bearing capacity; during the recovery phase, the auxiliary rope 8 is tensioned to destroy the umbrella device structure to reduce the bearing capacity, and then the mooring line 7 is tensioned for recovery.

[0029] After recovery, the wing plate 2, the traction bar 3 and the limit snap ring 4 do not remain on the seabed. When entering the recovery state, the bottom of the wing plate 2 is still connected to the torpedo anchor shell 1, the traction bar 3 is connected to the wing plate 2, and the limit snap ring 4 is connected to the traction bar 3. At this time, the wing plate 2 cannot provide resistance as in the working state. When recovering, the mooring line 7 is pulled to pull all the torpedo anchor structures out of the seabed together.

[0030] The wing plate 2 is hinged to the outside of the torpedo anchor shell 1, the core tube 5 is located inside the torpedo anchor shell 1, and the torpedo anchor shell 1 is provided with a shell hole 12 for the traction bar 3 and the limit clamp ring 4 to enter and exit.

[0031] When the torpedo anchor is dropped, the traction bar 3 is retracted inside the torpedo anchor shell 1, and one end of the traction bar 3 passes through the shell hole 12 and is connected to the wing plate 2. When the torpedo anchor is working, the traction bar 3 is tightened and one end passes through the shell hole 12 and is connected to the wing plate 2. When the torpedo anchor is recovered, the traction bar 3 and the limit clamp 4 pass through the shell hole 12.

[0032] The traction bar 3 can adopt a chain structure such as an iron chain or a steel cable. The length of each traction bar 3 can be selected according to the unfolding angle of the wing plate 2 to ensure that when the traction bar 3 is tightened, the wing plate 2 flips to the required angle to present an umbrella-shaped structure. When deployed, the wing plate 2 is close to the torpedo anchor shell 1. At this time, the traction bar 3 is not subjected to force, and the traction bar 3 is retracted and wound in the torpedo anchor shell 1 for standby use. When recovering, the core tube 5 releases the restriction on the limit snap ring 4, and the wing plate 2 drags the limit snap ring 4 out of the shell hole 12 through the traction bar 3. At this time, the wing plate 2 has no binding force, and the entire umbrella-shaped configuration is destroyed, reducing the bearing capacity.

[0033] like Figure 6 As shown, the limiting snap ring 4 includes a limiting head 41, a connecting rod 42, and a traction ring 43. The two ends of the connecting rod 42 are respectively connected to the limiting head 41 and the traction ring 43. The traction ring 43 is connected to the traction bar 3. The connecting rod 42 passes through the core tube 5, and the limiting head 41 is clamped in the core tube 5. The limiting head 41 can adopt a ball head, a square head and other structures, and the traction ring 43 can adopt a circular ring, a square ring and other structures. The function of the traction ring 43 is to fix one end of the traction bar 3. The function of the limiting head 41 is to limit the entire limiting snap ring 4 in the core tube 5 when the core tube 5 is constrained, so that the traction ring 43 can pull the traction bar 3 to maintain the umbrella state of the wing plate 2.

[0034] like Figure 7 As shown, the cylinder petal 51 is a plate-like structure, and a plurality of cylinder petals 51 form a hollow core tube 5. The side of the cylinder petal 51 is provided with a limiting concave edge 52. When the core tube 5 is constrained, the limiting concave edges 52 of two adjacent cylinder petals 51 are connected to form a limiting hole 53. The connecting rod 42 passes through the limiting hole 53. The aperture of the limiting hole 53 is larger than the rod diameter of the connecting rod 42 and smaller than the width of the limiting head 41. The plate-like cylinder petal 51 structure is an embodiment of the cylinder petal 51. The plate shape can be an arc plate, a flat plate, an angled plate, etc. Different plate-like cylinder petals 51 form different hollow core tube 5 structures when constrained by the constraint ring 6, that is, the core tube 5 can be a cylindrical shape or a square cylindrical shape. Each limiting concave edge 52 is a half-side structure of the limiting hole 53. When the two limiting concave edges 52 are connected to form a limiting hole 53, the limiting snap ring 4 can be limited, that is, the connecting rod 42 of the limiting snap ring 4 is inserted into the limiting hole 53, the limiting head 41 is exposed in the hollow area in the middle of the core tube 5, and the traction ring 43 is exposed on the periphery of the core tube 5. When the core tube 5 is released, the multiple tube petals 51 will be scattered under the pulling force of the limiting snap ring 4, and the structure of the limiting hole 53 will also be destroyed, so that the limiting snap ring 4 is separated from the core tube 5.

[0035] like Figure 8As shown, the cylinder petals 51 are block structures, and a plurality of cylinder petals 51 form a solid core tube 5. The side of the cylinder petals 51 is provided with a limiting groove 54 adapted to the limiting head 41 and the connecting rod 42. When the core tube 5 is constrained, the limiting grooves 54 of two adjacent cylinder petals 51 are connected to form a limiting chamber, and the limiting head 41 and the connecting rod 42 are stuck in the limiting chamber. The block-shaped cylinder petal 51 structure is another embodiment of the cylinder petal 51. There is no limit on the thickness of the cylinder petal 51. In order to obtain greater strength, the cylinder petal 51 can be made into a solid structure. The block structure can be a block with arc edges, a block with flat edges, a block with angled edges, and other structures. Different block-shaped cylinder petals 51 form different solid core tube 5 structures when constrained by the constraint ring 6, that is, the core tube 5 can be cylindrical or square. Each limiting groove 54 is a half-surface structure of a limiting chamber. When two limiting grooves 54 are connected to form a limiting chamber, the limiting clamp ring 4 can be limited, that is, the limiting head 41 and the connecting rod 42 of the limiting clamp ring 4 are partially inserted into the limiting chamber, and the traction ring 43 is exposed at the periphery of the core tube 5. When the core tube 5 is released, the multiple tube petals 51 will be dispersed under the pulling force of the limiting clamp ring 4, and the structure of the limiting chamber will also be destroyed, so that the limiting clamp ring 4 is separated from the core tube 5.

[0036] There is no limit to the number of tube petals 51 that make up the core tube 5. One limit snap ring 4 can be connected between two tube petals 51, or multiple limit snap rings can be connected; there is no limit to the number of wing plates 2 hinged to the torpedo anchor shell 1. One limit snap ring 4 can be connected to one wing plate 2, or multiple wing plates 2 can be connected to the same limit snap ring 4, and one wing plate 2 can be connected to multiple limit snap rings 4 at the same time. Various combinations can be matched according to actual needs.

[0037] like Figure 4 and Figure 5 As shown, the bottom of the cylinder petal 51 is provided with an avoidance chamfer 55 to provide an expansion space for the bottom of the cylinder petal 51. The avoidance chamfer 55 ensures that when each cylinder petal 51 is spread out, there is enough space at the bottom for it to turn over. If the avoidance chamfer 55 is not provided, the cylinder petals 51 may collide with each other during the expansion process, resulting in failure to spread smoothly and continuous jamming of the limit clamp 4.

[0038] A first protruding foot 56 is provided at the bottom of the cylinder petal 51, and a second protruding foot 13 is provided on the cone head 11. The first protruding foot 56 and the second protruding foot 13 are hingedly connected by a rotating shaft 14. Through the structural coordination of the first protruding foot 56, the second protruding foot 13, and the rotating shaft 14, the bottom of the cylinder petal 51 can be turned over relative to the cone head 11, so that the cylinder petals 51 can be spread apart to release the limit snap ring 4. The hinge height of the first protruding foot 56 at the bottom of the cylinder petal 51 can be adjusted according to actual needs, and the position of the second protruding foot 13 on the cone head 11 can also be adjusted accordingly to meet the spread angle of the cylinder petal 51 when the internal space size of the torpedo anchor housing 1 is different, so as to ensure that the limit snap ring 4 can be completely released when spreading.

[0039] A step 57 is provided at the top of the cylinder petal 51. When the multiple cylinder petals 51 are constrained, the multiple steps 57 form a boss at the top of the core cylinder 5, and the constraint ring 6 is clamped on the boss. When the torpedo anchor is deployed and working, the constraint ring 6 will be clamped on the core cylinder 5 to limit the movement of the limit clamp 4. When the torpedo anchor is recovered, the constraint ring 6 is separated at the same time so that the cylinder petals 51 can be dispersed to release the limit clamp 4.

[0040] When the torpedo anchor is recovered, the restraining ring 6 is separated from the top of the core tube 5 by tensioning the auxiliary rope 8, or the restraining ring 6 is separated from the top of the core tube 5 by hot-melting the restraining ring 6 through the auxiliary rope 8. The circular hole 61 on the restraining ring 6 is used to connect the auxiliary rope 8. The restraining ring 6 can be released in different ways, such as tensioning the restraining ring 6 to move the position to separate from the core tube 5, or hot-melting the restraining ring 6 to lose the binding force on the core tube 5, etc.

[0041] The specific working principle of this recoverable umbrella-type torpedo anchor is: S1. Release the torpedo anchor at the predetermined location and let it penetrate into the seabed by gravity.

[0042] S2. Pull the mooring line 7 upwards, and the wing plate 2 is opened to a certain angle by the force of the soil and enters the working state.

[0043] S3. Tension the auxiliary rope 8 and pull the restraint ring 6 out from the upper part of the core tube 5. At this time, the upper part of the tube petal 51 of the core tube 5 loses its restraint, and the lower part is hinged to the torpedo anchor shell 1. It expands outward under the action of the tension of the limiting clamp 4. After expansion, the gap between the tube petals 51 of the core tube 5 becomes larger so that the limiting head 41 can pass through. At this time, the torpedo anchor becomes a recovered state.

[0044] S4. Pull the mooring line 7, the wing plate 2 transmits the tension to the traction bar 3 and the limit clamp 4, and pulls the two out of the shell hole 12 of the torpedo anchor shell 1. At this time, the wing plate 2 loses its bearing capacity, and the mooring line 7 continues to be tensioned to recover the torpedo anchor.

[0045] The specific advantages of this recoverable umbrella-type torpedo anchor are: 1) The traditional torpedo anchor has a weak ability to resist vertical loads. The present invention combines the torpedo anchor with the umbrella structure to make up for this deficiency; 2) In conventional torpedo anchors, only part of the structural parts of partially recyclable torpedo anchors can be recycled, while the present invention can recycle the entire torpedo anchor structure and can be used repeatedly; 3) The structure used for recovery is a simple mechanical structure, and the key components are relatively non-deformable, and have high reliability in deep-sea environments where complex operations are difficult to perform.

[0046] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A recyclable umbrella-type torpedo anchor, characterized in that: It includes a mooring line, an auxiliary rope, a torpedo anchor shell, a wing plate, a restraining ring, a core tube, a traction strip, and a limiting snap ring. The top of the torpedo anchor shell is connected to the mooring line. The bottom of the torpedo anchor shell is provided with a cone head. The core tube is composed of a plurality of cylinder petals. The bottom of each cylinder petal is hinged on the cone head. The wing plate is hinged on the torpedo anchor shell. The limiting snap ring is connected to the wing plate through the traction strip. The auxiliary rope is connected to the restraining ring. When the torpedo anchor is deployed, the restraint ring is sleeved on the top of the core tube, the limit clamp ring is clamped in the core tube, and the wing plate is closely attached to the torpedo anchor shell; When the torpedo anchor is working, the mooring line is tensioned to make the wing plate open in an umbrella-shaped structure; When the torpedo anchor is recovered, the restraint ring is separated from the top of the core tube through the auxiliary rope, the tube petals are unfolded and the limiting clamp ring is separated from the core tube to destroy the umbrella-shaped structure of the wing plate.

2. The recoverable umbrella-type torpedo anchor according to claim 1, characterized in that: The wing plate is hinged to the outside of the torpedo anchor shell, the core tube is located inside the torpedo anchor shell, and the torpedo anchor shell is provided with shell holes for the traction strip and the limit clamp ring to enter and exit.

3. The recoverable umbrella-type torpedo anchor according to claim 2, characterized in that: When the torpedo anchor is dropped, the traction bar is retracted inside the torpedo anchor shell, and one end of the traction bar passes through the hole of the shell and is connected to the wing plate. When the torpedo anchor is working, the traction bar is tightened and one end passes through the hole of the shell and is connected to the wing plate. When the torpedo anchor is recovered, the traction bar and the limit clamp pass through the hole of the shell.

4. The recoverable umbrella-type torpedo anchor according to claim 1, characterized in that: The limit clamping ring includes a limit head, a connecting rod, and a traction ring. The two ends of the connecting rod are respectively connected to the limit head and the traction ring. The traction ring is connected to the traction bar. The connecting rod passes through the core tube, and the limit head is clamped in the core tube.

5. The recoverable umbrella-type torpedo anchor according to claim 4, characterized in that: The cylinder petals are plate-like structures, and a plurality of the cylinder petals form a hollow core cylinder. The side edges of the cylinder petals are provided with limiting concave edges. When the core cylinder is constrained, the limiting concave edges of two adjacent cylinder petals are connected to form a limiting hole. The connecting rod passes through the limiting hole. The aperture of the limiting hole is larger than the rod diameter of the connecting rod and smaller than the width of the limiting head.

6. The recoverable umbrella-type torpedo anchor according to claim 4, characterized in that: The cylinder petals are block-shaped structures, and a plurality of the cylinder petals form a solid core cylinder. The sides of the cylinder petals are provided with limiting grooves adapted to the limiting heads and connecting rods. When the core cylinder is constrained, the limiting grooves of two adjacent cylinder petals are connected to form a limiting chamber, and the limiting head and connecting rod are stuck in the limiting chamber.

7. The recoverable umbrella-type torpedo anchor according to claim 1, characterized in that: The bottom of the cylinder petal is provided with an avoidance chamfer to provide expansion space for the bottom of the cylinder petal.

8. The recoverable umbrella-type torpedo anchor according to claim 1, characterized in that: A step is provided at the top of the tube petal. When a plurality of the tube petals are constrained, the plurality of steps form a boss at the top of the core tube, and the constraining hoop is on the boss.

9. The recoverable umbrella-type torpedo anchor according to claim 1, characterized in that: The bottom of the cylinder petal is provided with a first convex foot, the cone head is provided with a second convex foot, and the first convex foot and the second convex foot are hinged through a rotating shaft.

10. The recoverable umbrella-type torpedo anchor according to claim 1, characterized in that: When the torpedo anchor is recovered, the restraint ring is separated from the top of the core tube by tensioning the auxiliary rope, or the restraint ring is separated from the top of the core tube by hot melting the restraint ring through the auxiliary rope.

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