A marine propeller net cutter mechanism

Abstract

The utility model relates to propeller fishing net cutter mechanism technical field, disclose a propeller fishing net cutter mechanism, including propeller body and flow guide cap, the tail outer wall of propeller body is provided with propeller blade, the back of propeller body and the inside of flow guide cap are provided with cutter assembly, the cutter assembly includes driving pulley, the outer wall of flow guide cap is provided with cutting groove, when propeller body rotates, can drive driving pulley synchronous rotation through the cutter assembly of setting, through the meshing drive of driving pulley and driven pulley, drive cutter head and cutter body high -speed rotation, such design can cut in advance the fishing net, rope and so on sundries of entering the flow guide cap area, effectively prevent its winding to propeller blade root part or wheel hub gap, avoid the propelling efficiency decline or propeller damage risk caused by sundries winding, significantly improved the ship navigation safety and reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of marine propeller fishing net cutter mechanism, and in particular to a marine propeller fishing net cutter mechanism. Background Technology

[0002] As is well known, ships are generally propelled by propellers. A propeller consists of a drive shaft and propeller blades. The propeller is connected to the output shaft of the engine via the drive shaft. The drive shaft is connected to the hull via bearings, bearing housings, and sealing devices. The hull has a stern tube or a mantle at the connection point with the propeller. The drive shaft drives the propeller to rotate and propel the ship. During navigation, the groove between the propeller drum and the stern tube or the mantle and the propeller drum is often entangled by floating objects, fishing nets, ropes, etc., in the water, affecting the normal operation of the propeller. Sometimes, this can even lead to damage to the propeller, loss of power, and serious accidents.

[0003] The applicant discovered through a search that a Chinese patent discloses "A Marine Propeller Fishing Net Cutting Mechanism," with publication (announcement) number "CN109178274B." This patent mainly uses a cutting mechanism that is movably installed on the propeller blades, using a connecting rod as a transition medium to connect the connecting block and the connecting cylinder. Multiple cutters are connected to the connecting rod. During installation, the direction of the cutter blades is ensured to be consistent with the rotation direction of the propeller blades, thereby using multiple cutters for cutting. However, this patent cannot effectively cut fishing nets, ropes, and other debris that enter the deflector cap area in advance. In actual use, debris may become entangled at the root of the propeller blades or in the hub gaps, which will increase rotational resistance, thereby weakening the propeller thrust output, reducing ship speed, or increasing energy consumption. Therefore, we propose a marine propeller fishing net cutting mechanism. Utility Model Content

[0004] The purpose of this utility model is to provide a marine propeller fishing net cutter mechanism to solve the problem mentioned in the background art that it is impossible to effectively cut fishing nets, ropes and other debris that enter the guide cap area in advance. In actual use, debris may become entangled in the root of the propeller blades or the hub gap, which will increase rotational resistance and thus reduce the propeller thrust output, reduce the ship speed or increase energy consumption.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a marine propeller-driven fishing net cutter mechanism, comprising a propeller body and a flow guide cap, wherein propeller blades are provided on the outer wall of the tail of the propeller body, and a cutter assembly is provided on the back of the propeller body and inside the flow guide cap, the cutter assembly comprising a drive wheel, a cutting groove being provided on the outer wall of the flow guide cap, the propeller body being connected to a driven wheel via a rotating shaft, and the driven wheel being connected to a cutter disc and a cutter body via a central shaft.

[0006] As a preferred embodiment, the active rotor is fixedly connected to the outer back wall of the propeller body, the active rotor is meshed with the driven rotor, and one end of the shaft is rotatably connected to the inner back wall of the propeller body.

[0007] As a preferred embodiment, the other end of the rotating shaft is fixedly connected to the inside of the driven rotating wheel, one end of the central shaft is fixedly connected to the outer wall of the driven rotating wheel, and the inner wall of the cutter disc is fixedly connected to the outer wall of the central shaft.

[0008] As a preferred embodiment, the other end of the central shaft is rotatably connected to the inside of the flow guide cap, and multiple sets of the cutter body are provided, which are arranged in a circular pattern on the outer circumferential wall of the cutter disc.

[0009] As a preferred embodiment, the cutter disc is provided with an installation and disassembly assembly, which includes connecting blocks and bolts. Multiple sets of connecting blocks are provided, and the multiple sets of connecting blocks are respectively fixedly connected to the bottom of multiple sets of cutter bodies. Multiple sets of circumferentially distributed mounting grooves are opened on the outer wall of the cutter disc, and the connecting blocks are adapted to the mounting grooves.

[0010] As a preferred embodiment, threaded grooves are provided on the outer wall of the connecting block and the inner wall of the mounting groove. The bolt is threaded onto the outer wall of the threaded groove, and a rubber waterproof cap is provided at the tail end of the bolt.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. With the cutter assembly, when the propeller body rotates, it can drive the drive wheel to rotate synchronously. Through the meshing transmission between the drive wheel and the driven wheel, the cutter disc and the cutter body are driven to rotate at high speed. This design can cut fishing nets, ropes and other debris that enter the guide cap area in advance, effectively preventing them from getting tangled at the root of the propeller blades or the hub gap, avoiding the risk of reduced propulsion efficiency or propeller damage caused by debris entanglement, and significantly improving the safety and reliability of ship navigation.

[0013] 2. The installation and disassembly components allow the cutter body and cutter disc to form a detachable modular connection structure. Workers can quickly install and disassemble the cutter body by matching the connecting blocks with the mounting slots and tightening the bolts. This significantly improves the convenience of maintenance. At the same time, the rubber waterproof caps at the bolt ends can effectively prevent seawater intrusion, enhance the waterproof sealing of the connection, and prevent metal parts from loosening or being damaged due to corrosion, thereby ensuring the long-term stable operation of the cutter mechanism. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is one of the schematic diagrams of the overall partial structure of this utility model;

[0016] Figure 3 This is the second schematic diagram of the overall partial structure of this utility model;

[0017] Figure 4 This is one of the structural schematic diagrams of the cutting blade assembly of this utility model;

[0018] Figure 5 This is one of the structural schematic diagrams of the cutting blade assembly of this utility model;

[0019] Figure 6 This is a schematic diagram of the installation and disassembly components of this utility model;

[0020] Figure 7 for Figure 6 Diagram showing the breakdown of the middle section.

[0021] In the diagram: 1. Propeller body; 2. Propeller blade; 3. Flow deflector; 4. Cutter assembly; 401. Cutting groove; 402. Drive wheel; 403. Shaft; 404. Driven wheel; 405. Central shaft; 406. Cutter disc; 407. Cutter body; 5. Installation and disassembly assembly; 501. Mounting groove; 502. Connecting block; 503. Threaded groove; 504. Bolt; 505. Rubber waterproof cap. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see the appendix Figure 1 - Appendix Figure 6 A marine propeller-driven fishing net cutter mechanism includes a propeller body 1 and a flow deflector 3. Propeller blades 2 are provided on the outer wall of the tail of the propeller body 1. A cutter assembly 4 is provided on the back of the propeller body 1 and inside the flow deflector 3. The cutter assembly 4 includes a drive wheel 402. A cutting groove 401 is provided on the outer wall of the flow deflector 3. The propeller body 1 is connected to a driven wheel 404 through a rotating shaft 403. The driven wheel 404 is connected to a cutter disc 406 and a cutter body 407 through a central shaft 405.

[0024] The cutting groove 401 is mainly designed to provide space for the rotation of the cutter body 407. The streamlined structure of the guide cap 3 can guide the water flow evenly to the propeller body 1, reducing turbulence and resistance.

[0025] The active rotor 402 is fixedly connected to the outer wall of the back of the propeller body 1. The active rotor 402 is meshed with the driven rotor 404. One end of the rotating shaft 403 is rotatably connected to the inner wall of the back of the propeller body 1, and the other end of the rotating shaft 403 is fixedly connected to the inside of the driven rotor 404. One end of the central shaft 405 is fixedly connected to the outer wall of the driven rotor 404. The inner wall of the cutter disc 406 is fixedly connected to the outer wall of the central shaft 405, and the other end of the central shaft 405 is rotatably connected to the inside of the guide cap 3. Multiple sets of cutter bodies 407 are provided, and the multiple sets of cutter bodies 407 are arranged in a circular pattern on the outer wall of the circumference of the cutter disc 406.

[0026] When the propeller body 1 rotates, the driving wheel 402 rotates synchronously with the propeller body 1, and drives the driven wheel 404 through gear meshing, thereby driving the cutter disc 406 and the cutter body 407 to rotate.

[0027] Specifically, the cutter assembly 4, when the propeller body 1 rotates, drives the active rotor 402 to rotate synchronously. Through the meshing transmission with the driven rotor 404, it drives the cutter disc 406 and the cutter body 407 to rotate at high speed. This can cut fishing nets, ropes and other debris that have entered the guide cap 3 area in advance, preventing them from getting tangled at the root of the propeller blade 2 or the hub gap. This avoids a decrease in propulsion efficiency or damage to the propeller caused by debris entanglement, and improves the safety and reliability of ship navigation.

[0028] Please see the appendix Figure 1 Appendix Figure 3 Appendix Figure 5 - Appendix Figure 7 The cutter disc 406 is provided with an installation and disassembly assembly 5 on its exterior. The installation and disassembly assembly 5 includes a connecting block 502 and a bolt 504. Multiple sets of connecting blocks 502 are provided, and the multiple sets of connecting blocks 502 are respectively fixedly connected to the bottom of multiple sets of cutter bodies 407. Multiple sets of circumferentially distributed mounting grooves 501 are opened on the outer wall of the cutter disc 406. The connecting blocks 502 are adapted to the mounting grooves 501. Threaded grooves 503 are opened on the outer wall of the connecting blocks 502 and the inner wall of the mounting grooves 501. The bolts 504 are threadedly connected to the outer wall of the threaded grooves 503. A rubber waterproof cap 505 is provided at the tail end of the bolts 504.

[0029] The mounting slot 501 provides an insertion guide for the connecting block 502, ensuring that the cutter body 407 is accurately positioned during installation. The operator can use the thread tightening force to firmly fix the connecting block 502 to the mounting slot 501, thereby ensuring that the cutter body 407 does not loosen when rotating at high speed and rotating with the propeller body 1.

[0030] Specifically, the installation and disassembly assembly 5 enables the cutter body 407 and the cutter disc 406 to form a detachable modular connection structure. By matching and positioning the connecting block 502 with the mounting groove 501 and tightening it with bolts 504, the operator can quickly complete the installation and disassembly of the cutter body 407, significantly improving maintenance convenience. At the same time, the rubber waterproof cap 505 at the end of the bolt 504 can effectively prevent seawater intrusion, enhance the waterproof sealing of the connection, prevent metal parts from loosening or being damaged due to corrosion, and ensure the long-term stable operation of the cutter mechanism.

[0031] Working principle of this utility model: This utility model is a marine propeller fishing net cutter mechanism. First, when the ship's engine drives the propeller body 1 to rotate, the active rotor 402 fixed to the outer wall of the back of the propeller body 1 will rotate synchronously. The rotation of the active rotor 402 drives the driven rotor 404 to rotate. The rotation of the driven rotor 404 is transmitted to the cutter disc 406 through the central shaft 405, driving the cutter body 407 to rotate at high speed. The streamlined structure of the guide cap 3 can guide the water flow and debris flow to the cutting area. The high-speed rotating cutter body 407 forms an annular cutting surface inside the guide cap 3. When fishing nets, ropes, or other debris enter the cutting groove 401, they are cut by the sharp blade, preventing them from contacting the propeller blade 2. Secondly, the cutter body 407 is precisely fitted with the mounting groove 501 of the cutter disc 406 through the connecting block 502 at the bottom, and then a tight connection is achieved through the cooperation of the bolt 504 and the threaded groove 503. When maintenance is required, the staff first removes the rubber waterproof cap 505 from the outside of the bolt 504, then loosens the bolt 504 with a tool, and removes the cutter body 407 that needs maintenance. The installation is the same. The rubber waterproof cap 505 at the end of the bolt 504 can form a sealing barrier.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A marine propeller-driven fishing net cutter mechanism, comprising a propeller body (1) and a flow deflector cap (3), characterized in that: The propeller body (1) has a propeller blade (2) on its tail outer wall. The back of the propeller body (1) and the inside of the flow guide cap (3) are provided with a cutter assembly (4). The cutter assembly (4) includes a drive wheel (402). The outer wall of the flow guide cap (3) is provided with a cutting groove (401). The propeller body (1) is connected to a driven wheel (404) through a rotating shaft (403). The driven wheel (404) is connected to a cutter disc (406) and a cutter body (407) through a central shaft (405).

2. The marine propeller-driven fishing net cutter mechanism according to claim 1, characterized in that: The active rotor (402) is fixedly connected to the outer back wall of the propeller body (1), the active rotor (402) is meshed with the driven rotor (404), and one end of the rotating shaft (403) is rotatably connected to the inner back wall of the propeller body (1).

3. The marine propeller-driven fishing net cutter mechanism according to claim 2, characterized in that: The other end of the rotating shaft (403) is fixedly connected to the inside of the driven rotating wheel (404), one end of the central shaft (405) is fixedly connected to the outer wall of the driven rotating wheel (404), and the inner wall of the cutter disc (406) is fixedly connected to the outer wall of the central shaft (405).

4. The marine propeller-driven fishing net cutter mechanism according to claim 3, characterized in that: The other end of the central shaft (405) is rotatably connected to the inside of the guide cap (3). The cutter body (407) is provided in multiple sets, and the multiple sets of cutter bodies (407) are arranged in a circular pattern on the outer circumferential wall of the cutter disc (406).

5. The marine propeller-driven fishing net cutter mechanism according to claim 4, characterized in that: The cutter disc (406) is provided with an installation and disassembly assembly (5) on its exterior. The installation and disassembly assembly (5) includes a connecting block (502) and a bolt (504). There are multiple sets of connecting blocks (502), and the multiple sets of connecting blocks (502) are respectively fixedly connected to the bottom of multiple sets of cutter bodies (407). Multiple sets of circumferentially distributed mounting grooves (501) are opened on the outer wall of the cutter disc (406), and the connecting blocks (502) are adapted to the mounting grooves (501).

6. The marine propeller-driven fishing net cutter mechanism according to claim 5, characterized in that: Threaded grooves (503) are provided on the outer wall of the connecting block (502) and the inner wall of the mounting groove (501). The bolt (504) is threaded to the outer wall of the threaded groove (503), and a rubber waterproof cap (505) is provided at the tail end of the bolt (504).

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