An anti-winding podded propeller

Abstract

The present application provides a kind of anti-winding pod propeller, including accommodating shell, first cutting tool body and installation cylinder, accommodating shell outer wall is fixed with multiple blades in periphery, at least 1 slide hole is equipped between every adjacent two blades, slide hole penetrates accommodating shell, first cutting tool body one side is equipped with first elastic member, other side is equipped with second elastic member, first elastic member is equipped with adsorption plate, second elastic member is equipped in accommodating shell and is connected with accommodating shell, the elastic coefficient of second elastic member is greater than the elastic coefficient of first elastic member, first cutting tool body is equipped with first cutting blade, first cutting blade one end is equipped in accommodating shell, other end extends from slide hole.Installation cylinder is equipped in the side of moving seat away from accommodating shell, for being connected with ship, is equipped with first drive motor for driving accommodating shell rotation and electromagnet capable of being attracted with adsorption plate, the present application can effectively cut the winding object wound on blade and does not affect the propelling movement of blade to ship.

Description

Technical Field

[0001] This invention relates to the field of propeller propulsion technology, and more particularly to an anti-entanglement podded propeller propulsion system. Background Technology

[0002] A ship's propeller consists of a hub and blades. The propeller is connected to the main engine's output shaft via a stern shaft. The stern shaft is connected to the hull via bearings, bearing housings, and sealing devices. The hull has a stern shaft mount corresponding to the propeller connection point. The stern shaft drives the propeller to rotate, thus propelling the ship's navigation. However, during navigation, the area between the propeller hub and the stern shaft mount is often entangled by ropes, fishing nets, seaweed, algae, and other marine debris, causing the propeller to jam. This not only affects the ship's normal operation but can even lead to major safety accidents such as engine failure and loss of life.

[0003] Chinese patent application number 201921149913.4 discloses an anti-winding propeller for a ship propulsion system, comprising a ship shaft bracket mounted on the ship, a stern shaft with one end passing through the stern shaft bracket and connected to the output shaft of the main engine, the stern shaft being rotatably connected to the stern shaft bracket via rolling bearings, a propeller mounted on the end of the stern shaft away from the ship shaft bracket, a first cutting device mounted on the stern shaft bracket and located on both sides of the stern shaft, and a second cutting device mounted on the propeller hub.

[0004] The aforementioned patent has the following shortcomings regarding an anti-entanglement propeller for ship propulsion: during the design process, it is only possible to cut seaweed, algae, and other materials around the propeller. However, once the propeller becomes entangled, it is not possible to effectively cut the seaweed, algae, and other materials entangled in the propeller. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an anti-entanglement podded propeller that can cut through seaweed, algae, and other materials when the propeller blades become entangled, thereby reducing the occurrence of safety accidents.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] An anti-entanglement podded propeller thruster, comprising:

[0008] The housing has multiple blades uniformly fixed on its outer wall circumferentially. At least one sliding hole is provided between each two adjacent blades, which is arranged along the axial direction of the housing and penetrates the housing.

[0009] The first cutting blade body has a first elastic element on one side and a second elastic element on the other side. The first elastic element has an adsorption plate. The second elastic element is located inside the accommodating shell and connected to the accommodating shell. The elastic coefficient of the second elastic element is greater than that of the first elastic element. The first cutting blade body has a first cutting blade. One end of the first cutting blade is located inside the accommodating shell, and the other end extends out from the sliding hole.

[0010] The mounting cylinder is located on the side of the movable seat away from the housing and is used to connect to the ship. It contains a first drive motor that drives the housing to rotate and an electromagnet that can attract the adsorption plate.

[0011] When the blades are not entangled by the entanglement, the electromagnet is energized to attract the adsorption plate, which stretches the first and second elastic elements. Multiple first cutting blades are located in the sliding hole on the side close to the mounting cylinder. When the blades are entangled by the entanglement, the electromagnet is de-energized, and the second elastic element drives multiple first cutting blades to move in the sliding hole to the other side away from the mounting cylinder.

[0012] Furthermore, a drive shaft is fixed on the output shaft of the first drive motor, and the end of the drive shaft is fixed to the housing.

[0013] Furthermore, the first elastic element includes a first elastic disc, which is disposed between the accommodating shell and the mounting cylinder. The drive shaft passes through the middle of the first elastic disc, and a plurality of first springs are circumferentially distributed on one side of the first elastic disc, with an adsorption plate disposed on each first spring.

[0014] Furthermore, the first cutting blade also includes a first moving rod and a second moving rod, the first moving rod being connected to the first elastic element, and the second moving rod being connected to the second elastic element.

[0015] Furthermore, a movable disk is provided between the accommodating shell and the mounting cylinder, the drive shaft passes through the movable disk, the first movable rod is fixed to the movable disk, a plurality of support rods are provided on the first elastic element, a hollow cylinder is provided at the end of the support rod, an annular groove is provided on the movable disk, and a rolling ball is provided between the hollow cylinder and the annular groove.

[0016] Furthermore, it also includes a pod body, which is equipped with a second drive motor. The pod body is fixed to the ship, and the output shaft of the second drive motor is fixed to the mounting cylinder.

[0017] Furthermore, a pull rope is sleeved between the pod body and a support rod, a first limiting groove is provided on the rotating shell, a second limiting groove is provided on the support rod, and the pull rope is located between the first limiting groove and the second limiting groove.

[0018] Furthermore, the movable disk has a plurality of second cutting blades distributed circumferentially. Each second cutting blade includes a bracket hinged to the movable disk, a fixing rod passing through the bracket, and a second cutting blade fixed to the bracket. One end of the fixing rod is fixed to the housing, and the other end is suspended and provided with a limiting piece.

[0019] Furthermore, the second elastic element includes a second elastic disc, with multiple second moving rods fixed on one side of the second elastic disc and multiple second springs provided on the other side, the multiple second springs being connected to the accommodating shell.

[0020] Furthermore, the first cutting blade is provided with a first cutting edge and a second cutting edge on both sides, and both the first cutting edge and the second cutting edge are perpendicular to the sliding hole.

[0021] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0022] 1. The present invention uses an electromagnet to attract the surface of the adsorption plate when energized. When the surface of the housing is wrapped with a material, the electromagnet is de-energized, causing the first cutting blade to move along the axial direction of the housing and away from the mounting cylinder, thereby cutting the material wrapped around the blade.

[0023] 2. By configuring the rolling ball to rotate along the inside of the hollow cylinder, the first cutting blade and the moving disk can both rotate circumferentially with the housing shell and move back and forth along the axial direction of the housing shell without any collision. Thus, the rolling ball can reduce the friction between the hollow cylinder and the housing shell, thereby effectively protecting the housing shell and the hollow cylinder.

[0024] 3. By fixing the pod body to the ship, the present invention can use a second drive motor to drive the housing and the propeller on the housing to swing in the horizontal direction, thereby adjusting the driving direction of the housing and the propeller on the housing.

[0025] 4. When the first drive motor of the present invention drives the housing and the blades on the housing to rotate, a certain centrifugal force is generated. By setting a fixed rod, the lateral movement of the moving disk can be converted into the linear movement of the support along the fixed rod. When the first cutting blade cuts the entangled material wrapped around the propeller body in the lateral direction, the second cutting blade can cut the entangled material in a direction perpendicular to the first cutting blade, thereby effectively reducing the cutting dead angle and ensuring the cutting efficiency of aquatic plants and other materials wrapped around the propeller body.

[0026] 5. A pull rope is sleeved between the main body of the gondola and a support rod of the present invention. When the electromagnet is de-energized and completes a cut, the electromagnet and the first cutting blade do not reset. At this time, by utilizing the rotation and reversal process of the mounting cylinder, the first cutting blade can be moved back and forth in a small amplitude to cut the aquatic plants, thus avoiding a large accumulation of aquatic plants on the propeller. The cleaning of aquatic plants can be achieved without additional power. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and are intended to explain the invention, but do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention from one angle;

[0029] Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle;

[0030] Figure 3 This is a schematic diagram of the exploded structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the mounting cylinder and the main body of the pod of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the first elastic element of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the portable disk of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of the present invention with the addition of a pull rope.

[0035] Among them, 1. housing; 11. sealing cover; 12. protective cover; 13. blade; 14. sliding hole;

[0036] 2. First elastic element; 21. Adsorption plate; 22. First elastic disc; 23. First spring; 24. Guide rod; 25. Support rod; 26. Second limiting groove; 27. Hollow cylinder; 28. Rolling ball; 29. ​​Spring sleeve;

[0037] 3. First cutting blade body; 31. First cutting blade; 311. First cutting edge; 312. Second cutting edge; 32. First moving rod; 33. Second moving rod; 34. Limiting block;

[0038] 4. Second elastic element; 41. Second elastic disc; 42. Second spring;

[0039] 5. Mounting cylinder; 51. First drive motor; 52. Drive shaft;

[0040] 6. Moving disc; 61. Annular groove; 62. Second cutting blade body; 621. Support; 6221. Through hole; 622. Fixing rod; 623. Limiting piece; 624. Second cutting blade;

[0041] 7. Pod body; 71. Second drive motor; 72. First limiting groove;

[0042] 8. Pull the rope. Detailed Implementation

[0043] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0044] The embodiments of this patent are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0045] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0046] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0047] Example 1

[0048] This invention provides an anti-entanglement podded propeller thruster, such as... Figures 1-6 As shown, it includes:

[0049] The housing 1 is a cylindrical structure with a sealing cover 11 on one side and a protective cover 12 connected by threads on the other side. Multiple blades 13 are uniformly fixed and welded to the outer wall. At least one sliding hole 14 is provided between each two adjacent blades 13 along the axial direction of the housing 1, and the sliding hole 14 passes through the housing 1.

[0050] Multiple first cutting blades 3, each first cutting blade 3 has a first elastic element 2 on one side and a second elastic element 4 on the other side. The first elastic element 2 has an adsorption plate 21. The second elastic element 4 is located inside the housing 1 and connected to the housing 1. The elastic coefficient of the second elastic element 4 is greater than that of the first elastic element 2. The first cutting blade 3 has a first cutting blade 31. One end of the first cutting blade 31 is located inside the housing 1, and the other end extends out from the sliding hole 14.

[0051] The mounting cylinder 5 is located on one side of the housing 1 and is used to connect to the ship. It contains a first drive motor 51 that drives the housing 1 to rotate and an electromagnet that can attract the adsorption plate 21.

[0052] In the initial state, the electromagnet is energized and attracts the adsorption plate 21, which stretches the first elastic element 2 and the second elastic element 4. Multiple first cutting blades 31 are located in the sliding hole 14 on the side close to the mounting cylinder 5. At this time, the propeller blade 13 is not entangled by the winding material. The first drive motor 51 drives the housing 1 to rotate, thereby causing the propeller blade 13 to rotate and providing driving force for the ship.

[0053] When the blade 13 is wrapped by the entangled material, the electromagnet is de-energized. Since the elastic coefficient of the second elastic element 4 is greater than that of the first elastic element 2, the second elastic element 4 will pull the multiple first cutting blades 3 and the first elastic element 2 away from the mounting cylinder 5, so that the multiple first cutting blades 31 move along the axial direction of the housing 1 in their respective sliding holes 14 to cut the entangled material.

[0054] In this invention, such as Figures 1-4 As shown, the first drive motor 51 outputs power through the drive shaft 52. The end of the drive shaft 52 is fixed to the housing 1. The first drive motor 51 drives the drive shaft 52 to rotate, which in turn drives the housing 1 and the propeller 13 mounted on the housing 1 to rotate, providing driving force for the ship.

[0055] In this invention, such as Figure 5 As shown, the first elastic element 2 includes a first elastic disk 22, which is located between the housing 1 and the mounting cylinder 5. The drive shaft 52 passes through the middle of the first elastic disk 22 and is not fixed to the first elastic disk 22. A plurality of first springs 23 are distributed circumferentially on one side of the first elastic disk 22. Each first spring 23 is provided with an adsorption plate 21. When the electromagnet is energized, the electromagnet can be attracted to the adsorption plate 21.

[0056] Specifically, a plurality of guide rods 24 are circumferentially distributed on the first elastic disc 22, and a first spring 23 is provided on each guide rod 24, and a spring sleeve 29 is sleeved on the outside of each first spring 23.

[0057] In this invention, such as Figure 3As shown, the second elastic element 4 includes a second elastic disk 41. Multiple second moving rods 33 are fixed on one side of the second elastic disk 41, and multiple second springs 42 are provided on the other side. The multiple second springs 42 are all connected to the housing 1. Specifically, one end of the second spring 42 is fixed to the second elastic disk 41, and the other end is fixed to the housing 1.

[0058] In this invention, such as Figure 3 As shown, the first cutting blade body 3 also includes a first moving rod 32 and a second moving rod 33. The first moving rod 32 is fixed to the first elastic member 2, and the second moving rod 33 is fixed to the second elastic member 4.

[0059] like Figure 3 As shown, the first cutting blade body 3 also includes a limiting block 34. The first cutting blade 31 is welded and fixed on the limiting block 34. The limiting block 34 is located in the sliding hole 14 to prevent the first cutting blade 31 from falling out of the sliding hole 14. The first moving rod 32 is located on the outside of the housing 1. One end of the first moving rod 32 is fixed to the first cutting blade 31, and the other end is fixed to the first elastic disc 22. The second moving rod 33 is located in the housing 1. One end of the second moving rod 33 is fixed to the limiting block 34, and the other end is fixed to the second elastic disc 41.

[0060] Specifically, such as Figure 3 As shown, in order to cut the entangled material when the first cutting blade 31 moves back and forth in the sliding hole 14, the first cutting blade 31 is provided with a first cutting edge 311 and a second cutting edge 312 on both sides. The first cutting edge 311 and the second cutting edge 312 are both perpendicular to the sliding hole 14. The first cutting edge 311 and the second cutting edge 312 form a bidirectional cutting edge, so that the first cutting blade 31 can cut during its back and forth movement.

[0061] In this invention, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a movable disk 6 is also provided between the mounting cylinder 5 and the housing 1. The drive shaft 52 passes through the middle of the movable disk 6. The first movable rod 32 is fixed to the movable disk 6. The first elastic member 2 is provided with multiple support rods 25. Specifically, the support rod 25 is located on the other side of the first elastic disk 22. The support rod 25 is an L-shaped bent rod structure. The end of the support rod 25 is provided with a hollow cylinder 27. The movable disk 6 is provided with an annular groove 61. A rolling ball 28 is provided between the hollow cylinder 27 and the annular groove 61. The rolling ball 28 can rotate in the annular groove 61, so that the movable disk 6 and the housing 1 rotate synchronously with the mounting cylinder 5 and the first elastic disk 22. The first cutting blade 3 can also rotate synchronously with the movable disk 6.

[0062] Since the drive shaft 52 passes through the middle of the moving disk 6 and is not fixed to the moving disk 6, when the electromagnet is energized or de-energized, the moving disk 6 and the first cutting blade 3 can move back and forth along the axial direction of the housing 1, thereby enabling the first cutting blade 3 to cut the wrapped material. Therefore, the first cutting blade 3 and the moving disk 6 can both rotate around the housing 1 and move back and forth along the axial direction of the housing 1 without any contact. Thus, the friction between the hollow cylinder 27 and the housing 1 can be reduced by the rolling ball 28, thereby effectively protecting the housing 1 and the hollow cylinder 27.

[0063] Typically, the entangled material is seaweed, algae, etc., and the adsorption plate 21 contains a magnet.

[0064] Specifically, the first drive motor 51 drives the housing 1 and the blades 13 on the housing 1 to rotate, which can be used to drive the ship. An electromagnet is provided so that it can attract the surface of the adsorption plate 21 after being energized. At this time, the first elastic element 2 and the second elastic element 4 are in a stretched state, and the first moving rod 32 extends into the mounting cylinder 5. When the housing 1 and the blades 13 on the housing 1 are wrapped with entangled material, the electromagnet is de-energized, so that the first moving rod 32 and the second moving rod 33 can slide axially along the mounting cylinder 5 relative to the mounting cylinder 5 and the housing 1 under the elastic force of the first elastic element 2 and the second elastic element 4. During this process, the first cutting blade 31 can slide back and forth along the housing 1 under the limiting and guiding action of the limiting block 34 and the sliding hole 14. During the sliding process, the first cutting blade 31 can cut the entangled material on the blades 13 on the housing 1 and the housing 1, thereby preventing it from entangled on the housing 1 and the blades 13 on the housing 1.

[0065] However, when the cutting blade needs to be reset, the electromagnet is energized again, so that the strong magnetic force generated by the electromagnet can overcome the elastic force of the first elastic element 2 and the second elastic element 4, so that the adsorption plate 21 is finally re-adsorbed by the electromagnet, and the first cutting blade body 3 can be reset.

[0066] Example 2

[0067] An anti-entanglement podded propeller thruster, designed to ensure efficient cutting of entangled materials; this embodiment makes the following additions based on the previous embodiment:

[0068] like Figure 1 , Figure 2 and Figure 6As shown, the movable disk 6 has a plurality of second cutting blades 62 distributed circumferentially. The second cutting blade 62 includes a bracket 621 hinged to the movable disk 6, a fixing rod 622 passing through the bracket 621, and a second cutting blade 624 fixed to the bracket 621. One end of the fixing rod 622 is fixed to the housing 1, and the other end is suspended and provided with a limiting piece 623.

[0069] One end of the bracket 621 is hinged to the movable disk 6, and the other end is provided with a through hole 6221 arranged radially along the housing 1. The fixing rod 622 is provided in the through hole 6221, so that the bracket 621 can move back and forth along the fixing rod 622.

[0070] When the first drive motor 51 drives the housing 1 and the blades 13 on the housing 1 to rotate, a certain centrifugal force is generated. The lateral movement of the moving disk 6 can be converted into the linear movement of the support 621 along the fixed rod 622 by the fixed rod 622. When the first cutting blade 31 cuts the entangled material wrapped around the propeller body in the lateral direction, the second cutting blade 624 can cut the entangled material in a direction perpendicular to the first cutting blade 31, thereby effectively reducing the cutting dead angle and ensuring the cutting efficiency of aquatic plants and other objects wrapped around the propeller body.

[0071] Example 3

[0072] An anti-entanglement podded propeller thruster, in order to ensure adjustment of the swing direction of the housing 1; this embodiment makes the following additions based on the previous embodiment:

[0073] In this invention, such as Figure 4 As shown, an anti-entanglement podded propeller also includes a pod body 7, a second drive motor 71 is provided inside the pod body 7, the pod body 7 is fixed on the ship, and the output shaft of the second drive motor 71 is fixed to the mounting cylinder 5.

[0074] Specifically, the second drive motor 71 is fixed to the inner wall of the pod body 7 by bolts, and the output shaft of the second drive motor 71 is fixed to the top of the mounting cylinder 5 by pins.

[0075] By fixing the pod body 7 to the ship, the second drive motor 71 can drive the mounting cylinder 5 to swing in the horizontal direction, thereby adjusting the swing direction of the mounting cylinder 5 and the housing 1.

[0076] Example 4

[0077] An anti-entanglement podded propeller thruster, to further ensure the efficiency of cutting entangled materials; this embodiment makes the following additions based on the previous embodiment:

[0078] like Figure 7As shown, a pull rope 8 is sleeved between the pod body 7 and a support rod 25. The pod body 7 is provided with a first limiting groove 72, and the support rod 25 is provided with a second limiting groove 26. The pull rope 8 is located between the first limiting groove 72 and the second limiting groove 26. Limiting members are provided in the first limiting groove 72 and the second limiting groove 26 to prevent the pull rope 8 from slipping out of the first limiting groove 72 and the second limiting groove 26, and thus from disengaging from the support rod 25 and the rotating shell, so that the pull rope 8 can only move within the first limiting groove 72 and the second limiting groove 26.

[0079] When the electromagnet is energized, that is, when the first cutting blade 3 is close to the mounting cylinder 5, the pull rope 8 is in a slack state. When the electromagnet is de-energized, that is, when the first cutting blade 3 is furthest from the mounting cylinder 5, the pull rope 8 is in a taut state, thus not affecting the cutting process of the first cutting blade 3 driven by the electromagnet. At the same time, when the electromagnet is de-energized, when the second drive motor 71 drives the mounting cylinder 5 to change direction, the housing 1 and the moving disk 6 rotate relative to the main body 7 of the pod. At this time, the pull rope 8 on one side will be under tension, pulling the moving disk 6 to move closer to the main body 7 of the pod, that is, pushing the cutting blade to move and cut the aquatic plants. The tension on the other side is in a slack state. Conversely, when rotating to the other side, it will also push the first cutting blade 3 to move and cut the entangled material.

[0080] In other words, during normal operation, the electromagnet cannot continuously and frequently drive the first and second moving seats to move back and forth. After the electromagnet is de-energized and completes a full cut, the electromagnet and the first cutting blade 3 do not immediately reset. At this time, by utilizing the rotation and direction-changing process of the mounting cylinder 5, the first cutting blade 3 can be moved back and forth in a small amplitude to cut the aquatic plants, preventing a large amount of aquatic plants from accumulating on the propeller. The cleaning of aquatic plants can be achieved without additional power. After a certain period of time, or when it is known that a certain amount of aquatic plants and debris have accumulated on the propeller blade 13, the electromagnet and the first cutting blade 3 are reset and then released, thus completing a full back-and-forth cutting process of the first cutting blade 3 and clearing the aquatic plants and debris from the propeller blade 13.

[0081] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An anti-entanglement podded propeller, characterized in that, include: The housing has multiple blades uniformly fixed on its outer wall circumferentially. At least one sliding hole is provided between each two adjacent blades, which is arranged along the axial direction of the housing and penetrates the housing. The first cutting blade body has a first elastic element on one side and a second elastic element on the other side. The first elastic element has an adsorption plate. The second elastic element is located inside the accommodating shell and connected to the accommodating shell. The elastic coefficient of the second elastic element is greater than that of the first elastic element. The first cutting blade body has a first cutting blade. One end of the first cutting blade is located inside the accommodating shell, and the other end extends out from the sliding hole. The first cutting blade also includes a first moving rod and a second moving rod, the first moving rod being connected to the first elastic element, and the second moving rod being connected to the second elastic element; The mounting cylinder is located on the side of the movable disk away from the housing and is used to connect to the ship. It contains a first drive motor that drives the housing to rotate and an electromagnet that can attract the adsorption plate. A drive shaft is fixed on the output shaft of the first drive motor, and the end of the drive shaft is fixed to the housing. A movable disk is provided between the accommodating shell and the mounting cylinder, the drive shaft passes through the movable disk, the first movable rod is fixed to the movable disk, a plurality of support rods are provided on the first elastic element, a hollow cylinder is provided at the end of the support rod, an annular groove is provided on the movable disk, and a rolling ball is provided between the hollow cylinder and the annular groove; The movable disk has a plurality of second cutting blades distributed circumferentially. Each second cutting blade includes a bracket hinged to the movable disk, a fixing rod passing through the bracket, and a second cutting blade fixed to the bracket. One end of the fixing rod is fixed to the housing, and the other end is suspended and provided with a limiting piece. When the blades are not entangled by the entanglement, the electromagnet is energized to attract the adsorption plate, which stretches the first elastic element and the second elastic element. Multiple first cutting blades are located in the sliding hole on the side close to the mounting cylinder. When the blades are entangled by the entanglement, the electromagnet is de-energized, and the second elastic element drives multiple first cutting blades to move in the sliding hole to the other side away from the mounting cylinder. One end of the bracket is hinged to the movable disk, and the other end is provided with a through hole arranged radially along the housing 1. The fixing rod is located in the through hole, so that the bracket can move back and forth along the fixing rod.

2. The anti-entanglement podded propeller thruster according to claim 1, characterized in that: The first elastic element includes a first elastic disc, which is disposed between the accommodating shell and the mounting cylinder. The drive shaft passes through the middle of the first elastic disc. A plurality of first springs are distributed circumferentially on one side of the first elastic disc, and an adsorption plate is disposed on each of the first springs.

3. The anti-entanglement podded propeller thruster according to claim 1, characterized in that: It also includes a pod body, which contains a second drive motor. The pod body is fixed to the ship, and the output shaft of the second drive motor is fixed to the mounting cylinder.

4. The anti-entanglement podded propeller thruster according to claim 3, characterized in that: A pull rope is fitted between the main body of the pod and a support rod. The rotating shell is provided with a first limiting groove, and the support rod is provided with a second limiting groove. The pull rope is located between the first limiting groove and the second limiting groove.

5. The anti-entanglement podded propeller thruster according to claim 1, characterized in that: The second elastic element includes a second elastic disc, with multiple second moving rods fixed on one side of the second elastic disc and multiple second springs provided on the other side, the multiple second springs being connected to the housing.

6. The anti-entanglement podded propeller thruster according to claim 1, characterized in that: The first cutting blade has a first cutting edge and a second cutting edge on both sides, and both the first cutting edge and the second cutting edge are perpendicular to the sliding hole.

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