Marine magnetic suspension shaftless propelling device with double limiting structures

Abstract

The utility model discloses a marine magnetic suspension shaftless propulsion device with a double limiting structure, which belongs to the field of shaftless propellers and comprises an outer cover and two mounting covers, the outer cover is positioned between the two mounting covers, four mounting blocks are fixedly connected to the outer walls of the two mounting covers at equal intervals, fixing bolts are in threaded connection with the interiors of the four mounting blocks, and the fixing bolts are fixedly connected with the outer walls of the two mounting covers. And the threaded part of the other fixing bolt is in threaded connection with the interior of the other mounting block, one end of the fixing bolt is fixedly connected with a hexagon nut, and the interior of the fixing bolt is rotationally connected with a threaded rod. Through cooperation of the mounting blocks, the fixing bolts, the hexagonal nuts, the round nuts, the threaded rods, the moving blocks, the limiting rods, the connecting rods, limiting blocks and other components, double-locking connection between the two mounting covers is achieved, only a conventional tool is needed for screwing the nuts during mounting, operation is easy, connection is firm, loosening caused by vibration, impact and other factors can be effectively resisted, and the mounting efficiency is improved. The motor structure stability is guaranteed and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of shaftless propulsion, and more specifically, to a marine magnetic levitation shaftless propulsion device with a dual limiting structure. Background Technology

[0002] Traditional marine propulsion systems mostly employ shafted propulsion, where engine power is transmitted to the propeller via a drive shaft. In this process, friction and energy loss are inevitable due to the presence of multiple mechanical connecting components on the drive shaft, such as couplings and bearings. While some shaftless propulsion motors for marine applications exist, they still have shortcomings. For example, most shaftless propulsion motor housings on the market use screws for connection. The lack of a locking mechanism after screw connection results in insufficient stability of the motor's connecting components. Loose screws can lead to component displacement and misalignment, affecting propulsion efficiency, and may even cause components to detach, resulting in safety accidents. Utility Model Content

[0003] 1. Technical problems to be solved

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide a marine magnetic levitation shaftless propulsion device with a dual limiting structure, which can achieve a more stable structure.

[0005] 2. Technical Solution

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A marine magnetic levitation shaftless propulsion device with a dual-limiting structure includes an outer cover and two mounting covers. The outer cover is positioned between the two mounting covers, and four mounting blocks are fixedly connected to the outer walls of each of the two mounting covers at equal intervals. Each of the four mounting blocks has threads adapted to a fixing bolt, allowing the fixing bolt to be screwed into the mounting block via a threaded connection. Specifically, the threaded portion of one fixing bolt can be threadedly connected to the thread inside the other mounting block, thereby connecting the two mounting covers. A hexagonal nut is fixedly connected to one end of the fixing bolt, facilitating the operator to tighten the fixing bolt using tools. The interior of the fixing bolt has space for a threaded rod to rotate, allowing the threaded rod to rotate within the fixing bolt. The outer wall of the threaded rod is threaded, and this thread is adapted to the thread inside a moving block, allowing the moving block to move along the axial direction of the threaded rod.

[0008] Furthermore, the fixed bolt is internally fixed with limit rods at equal intervals. The threaded rod is located in the middle of the space enclosed by the four limit rods. The moving block is provided with a sliding channel that matches the four limit rods, so that the moving block can slide under the restriction of the four limit rods, thereby ensuring that the moving block will not rotate when moving along the threaded rod and can only make linear motion.

[0009] Furthermore, the outer wall of the movable block is provided with four rotating connection points at equal intervals. Each rotating connection point is rotatably connected to a connecting rod. The ends of the four connecting rods away from the movable block are provided with rotating connection structures. These rotating connection structures enable the connecting rods to be rotatably connected to the limiting block, so that when the movable block moves, the limiting block can be moved accordingly through the connecting rods.

[0010] Furthermore, all four limiting blocks are slidably connected to the non-threaded portion below the fixing bolt. The non-threaded portion below the fixing bolt is provided with a sliding track adapted to the limiting block, so that the limiting block can slide on the sliding track, thereby ensuring the stability and accuracy of the limiting block during movement.

[0011] Furthermore, each of the four mounting blocks on the outer wall of one of the mounting covers has an annular groove inside. The shape and size of the annular groove are adapted to the limiting block, so that the limiting block can be engaged inside the annular groove. Through the engagement of the limiting block and the annular groove, the stability of the connection between the two mounting covers can be further enhanced. A round nut is fixedly connected to the end of the threaded rod. A rotating connection structure is provided between the round nut and the hexagonal nut, so that the round nut can rotate inside the hexagonal nut. This allows the operator to drive the threaded rod to rotate by rotating the round nut, thereby moving the moving block and the limiting block.

[0012] Furthermore, a connecting pipe is fixedly connected to the outer wall of the outer cover. This connecting pipe is used to connect with other components of the ship to realize the connection between the motor and the ship system. The interior of the outer cover is provided with a space for installing a fixing ring and a permanent magnet. The permanent magnet is located between the fixing ring and the inner wall of the outer cover. The permanent magnet provides the necessary magnetic field environment for the magnetic levitation operation of the motor through its own magnetic effect.

[0013] Furthermore, the fixed ring has a space inside for the blade to rotate, allowing the blade to rotate inside the fixed ring. Both sides of the outer wall of the blade are equipped with ring bearings, and the two ring bearings are fixedly connected inside the two mounting covers. By setting the ring bearings, the friction force when the blade rotates can be reduced, the smoothness and stability of the blade rotation can be improved, and the positioning accuracy of the blade during rotation can also be guaranteed.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) In this solution, the double locking connection between the two mounting covers is achieved through the cooperation of components such as mounting blocks, fixing bolts, hexagonal nuts, round nuts, threaded rods, moving blocks, limit rods, connecting rods and limit blocks. During installation, only conventional tools are needed to tighten the nuts. The operation is simple and the connection is firm. It can effectively resist loosening caused by factors such as vibration and impact, ensure the stability of the motor structure, and extend the service life.

[0017] (2) In this scheme, the ring bearings installed on both sides of the outer wall of the blade are fixed inside the two mounting covers respectively. The ring bearings provide support and guidance for the rotation of the blade, reduce the frictional resistance during rotation, and ensure the smoothness and accuracy of the blade rotation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 3 This is a schematic diagram showing the connection relationship between the fixing bolt and the mounting block in this utility model;

[0021] Figure 4 for Figure 3 Enlarged structural diagram of region A in the middle;

[0022] Figure 5 This is a schematic diagram of the internal structure of the fixing bolt in this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Outer cover; 11. Connecting pipe; 12. Mounting cover; 13. Mounting block; 14. Fixing bolt; 15. Hex nut; 16. Threaded rod; 17. Round nut; 18. Moving block; 19. Limiting rod; 2. Connecting rod; 21. Limiting block; 22. Annular groove; 3. Fixing ring; 31. Permanent magnet; 32. Paddle blade; 33. Annular bearing. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Example 1:

[0029] Please see Figure 1-5A marine magnetic levitation shaftless propulsion device with a dual-limiting structure includes an outer cover 1 and two mounting covers 12. The outer cover 1 is located between the two mounting covers 12. Four mounting blocks 13 are equidistantly fixed to the outer walls of each mounting cover 12. Fixing bolts 14 are threaded into the interior of each of the four mounting blocks 13. The threaded portion of another fixing bolt 14 is threaded into the interior of another mounting block 13. The two mounting covers 12 are connected via the mounting blocks 13 and the fixing bolts 14. This threaded connection method makes the installation process simple and direct. Operators only need to use common tools and hexagonal nuts 15 to tighten the fixing bolts 14 to quickly complete the docking installation of the two mounting covers 12. One end of the fixing bolt 14 is fixedly connected to a hexagonal nut 15. A threaded rod 16 is rotatably connected inside the fixing bolt 14. A moving block 18 is threaded to the outer wall of the threaded rod 16. Limiting rods 19 are equidistantly fixed inside the fixing bolt 14. The threaded rod 16 is located between the four limiting rods 19. The moving block 18 and the four limiting rods 19 are all slidably connected. Four connecting rods 2 are equidistantly rotatably connected to the outer wall of the moving block 18. Each end of the four connecting rods 2 away from the moving block 18 is rotatably connected to a limiting block 21. Each of the four limiting blocks 21 is slidably connected to the non-threaded part below the fixing bolt 14. The interior of each of the four mounting blocks 13 on the outer wall of a mounting cover 12 is provided with annular grooves 22. The limiting blocks 21 are engaged inside the annular grooves 22. A round nut 17 is fixedly connected to the end of the threaded rod 16. The round nut 17 is rotatably connected inside the hexagonal nut 15. When the fixing bolt 14 is screwed into the mounting block 13, the rotating round nut 17 drives the threaded rod 16 to rotate, causing the moving block 18 to slide along the limiting rod 19. The movement of the moving block 18 drives the limiting block 21 to engage in the annular groove 22 through the connecting rod 2, forming a double-locking structure. This structure not only enhances the connection strength between the two mounting covers 12, but also effectively prevents the connection from loosening due to vibration, impact and other factors during motor operation, ensuring the stability and reliability of the entire motor structure and extending the service life of the motor.

[0030] Example 2:

[0031] Please see Figure 1-5A marine magnetic levitation shaftless propulsion device with a dual-limiting structure is disclosed. The outer wall of the outer casing 1 is fixedly connected to a connecting pipe 11. This connecting pipe 11 provides a convenient interface for connecting the motor to other ship systems. Through the connecting pipe 11, the motor can be easily connected to the ship's power supply system, control system, etc., to achieve power transmission and signal interaction. Inside the outer casing 1, a fixing ring 3 and a permanent magnet 31 are installed. The permanent magnet 31 is located between the fixing ring 3 and the inner wall of the outer casing 1. The fixing ring 3 and the permanent magnet 31 are rationally arranged inside the outer casing 1. The permanent magnet 31 is located between the fixed ring 3 and the inner wall of the outer cover 1, forming a stable magnetic levitation working environment. This layout enables the permanent magnet 31 to effectively generate a magnetic field, providing the necessary conditions for the magnetic levitation operation of the motor. At the same time, the fixed ring 3 plays a supporting and positioning role, ensuring the positional accuracy and stability of the permanent magnet 31, thereby ensuring that the motor can operate stably and efficiently. The blade 32 is rotatably connected inside the fixed ring 3. Both sides of the outer wall of the blade 32 are equipped with ring bearings 33, and the two ring bearings 33 are fixedly connected inside the two mounting covers 12 respectively.

[0032] Working principle: The two mounting covers 12 are connected by mounting blocks 13 and fixing bolts 14. The operator uses a tool to rotate the hexagonal nut 15, so that the fixing bolt 14 is screwed into the mounting block 13, achieving the initial docking of the two mounting covers 12. Then, the circular nut 17 is rotated, which drives the threaded rod 16 inside the fixing bolt 14 to rotate. Since the threaded rod 16 is threadedly connected to the moving block 18, and the moving block 18 can only slide in a straight line under the guidance of the limiting rod 19, the rotation of the threaded rod 16 will cause the moving block 18 to move along the limiting rod 19. The movement of the moving block 18 drives the limiting block 21 to slide at the non-threaded part below the fixing bolt 14 through the connecting rod 2. Finally, the limiting block 21 is locked into the annular groove 22 in the mounting block 13 on the outer wall of one of the mounting covers 12, completing the double locking and ensuring a stable connection.

[0033] The permanent magnet 31 inside the outer casing 1 is located between the fixed ring 3 and the inner wall of the outer casing 1. The permanent magnet 31 generates a stable magnetic field. When the motor is powered on, the internal current interacts with the magnetic field generated by the permanent magnet 31. According to the principle of electromagnetic induction, an electromagnetic force is generated. This electromagnetic force enables the motor to achieve a magnetic levitation state, reducing the friction and energy loss caused by traditional mechanical contact.

[0034] Based on magnetic levitation, the propeller 32 inside the fixed ring 3 begins to rotate. The annular bearings 33 installed on both sides of the outer wall of the propeller 32 are fixed inside the two mounting covers 12 respectively. The annular bearings 33 provide support and guidance for the rotation of the propeller 32, reduce the frictional resistance during rotation, and ensure the smoothness and accuracy of the rotation of the propeller 32. The rotation of the propeller 32 will generate a force on the surrounding water, and the water will generate a reaction force on the propeller 32. This reaction force is the power to propel the ship forward. By controlling the magnitude and direction of the current of the motor, the strength and direction of the magnetic field generated by the permanent magnet 31 can be adjusted, thereby controlling the speed and direction of the propeller 32, realizing the acceleration, deceleration, and turning of the ship.

[0035] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A marine magnetic levitation shaftless propulsion device with a dual limiting structure, comprising an outer cover (1) and two mounting covers (12), characterized in that: The outer cover (1) is located between two mounting covers (12). Four mounting blocks (13) are fixedly connected at equal intervals to the outer walls of the two mounting covers (12). The four mounting blocks (13) are threaded with fixing bolts (14). The threaded part of another fixing bolt (14) is threaded to the inside of another mounting block (13). One end of the fixing bolt (14) is fixedly connected with a hexagonal nut (15). The inside of the fixing bolt (14) is rotatably connected with a threaded rod (16). The outer wall of the threaded rod (16) is threaded with a moving block (18).

2. The marine magnetic levitation shaftless propulsion device with a dual limiting structure according to claim 1, characterized in that: The fixing bolt (14) is internally fixedly connected to the limit rods (19) at equal intervals. The threaded rod (16) is located between the four limit rods (19). The moving block (18) and the four limit rods (19) are all slidably connected.

3. A marine magnetic levitation shaftless propulsion device with a dual limiting structure according to claim 2, characterized in that: The outer wall of the movable block (18) is equidistantly connected to four connecting rods (2), and the ends of the four connecting rods (2) away from the movable block (18) are rotatably connected to limit blocks (21).

4. A marine magnetic levitation shaftless propulsion device with a dual limiting structure according to claim 3, characterized in that: All four limiting blocks (21) are slidably connected to the non-threaded part below the fixing bolt (14).

5. A marine magnetic levitation shaftless propulsion device with a dual limiting structure according to claim 4, characterized in that: An annular groove (22) is provided inside the four mounting blocks (13) on the outer wall of the mounting cover (12). The limiting block (21) is engaged inside the annular groove (22). A round nut (17) is fixedly connected to the end of the threaded rod (16). The round nut (17) is rotatably connected inside the hexagonal nut (15).

6. The marine magnetic levitation shaftless propulsion device with a dual limiting structure according to claim 1, characterized in that: The outer wall of the outer cover (1) is fixedly connected to a connecting pipe (11), and a fixing ring (3) and a permanent magnet (31) are installed inside the outer cover (1). The permanent magnet (31) is located between the fixing ring (3) and the inner wall of the outer cover (1).

7. A marine magnetic levitation shaftless propulsion device with a dual limiting structure according to claim 6, characterized in that: The fixed ring (3) is rotatably connected to the blade (32), and the blade (32) is equipped with ring bearings (33) on both sides of the outer wall of the blade (32). The two ring bearings (33) are respectively fixedly connected to the inside of the two mounting covers (12).

Images