Shaftless propeller driven by middle rotor axial magnetic flux motor

Abstract

The utility model belongs to the technical field of shaftless propellers, and particularly relates to a shaftless propeller driven by an intermediate rotor axial magnetic flux motor, which comprises a shell, a stator fixedly connected to the inner wall of the shell, a rotor arranged in the stator, mounting grooves formed in the inner wall of the rotor, and positioning columns fixedly connected to the inner walls of the mounting grooves. Mounting blocks are mounted in the multiple positioning columns, paddles are fixedly connected to the outer walls of the mounting blocks, positioning holes are formed in the outer walls of the mounting blocks, the positioning columns are located in the positioning holes, pressing plates are arranged in the multiple mounting grooves, connecting rods are fixedly connected to the outer walls of the pressing plates, and arc-shaped plates are fixedly connected to the other ends of the connecting rods; springs are fixedly connected to the inner walls of the arc-shaped plates, rotating grooves are formed in one ends of the rotors, spring grooves are formed in the inner walls of the rotating grooves, the other ends of the springs are fixedly connected with the inner walls of the spring grooves, and threaded rings are in threaded connection with the inner walls of the rotating grooves. According to the utility model, the blades can be quickly separated from the rotor under the action of the threaded ring, so that the blades are convenient to replace, and the replacement cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shaftless propellers, in particular to a shaftless propeller driven by an intermediate rotor axial magnetic flux motor. Background Art

[0002] Shaftless propulsion eliminates the shaft in traditional propulsion systems by installing the electric motor directly inside the propeller, thereby reducing energy transmission resistance and vibration and improving propulsion efficiency. Shaftless propulsion has great application prospects in submarines and other underwater vehicles, especially in scenarios where noise reduction, improved stealth, and propulsion efficiency are required. Shaftless propulsion offers advantages such as high power density, low vibration and noise, and green energy conservation.

[0003] The blades and rotors of existing shaftless propellers are generally connected with bolts. Since the blades may hit hard objects and be damaged or corroded when rotating in the water, the blades need to be disassembled and replaced. During disassembly, tools are needed to separate the blades from the rotor, which is a more cumbersome operation. If the blades and rotor are fixedly connected by welding, the rotor needs to be removed at the same time during disassembly. Therefore, the entire propeller needs to be disassembled before the rotor can be taken out, and the replacement cost is high. Summary of the Invention

[0004] The utility model aims to provide a shaftless propeller driven by an intermediate rotor axial flux motor, wherein the blades can be quickly separated from the rotor under the action of a threaded ring, thereby facilitating blade replacement and saving replacement costs.

[0005] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a shaftless propeller driven by an intermediate rotor axial flux motor is provided, comprising a housing, an inner wall of the housing is fixedly connected to a stator, a rotor is arranged inside the stator, an inner wall of the rotor is provided with a mounting groove, and the number of the mounting grooves is multiple, the inner walls of the multiple mounting grooves are fixedly connected to positioning posts, and the number of the positioning posts is two, a mounting block is installed inside the multiple positioning posts, the outer wall of the mounting block is fixedly connected to a blade, the outer wall of the mounting block is provided with a positioning hole, and the number of the positioning holes is two, the positioning post is located inside the positioning hole, a pressure plate is provided inside the multiple mounting grooves, the outer wall of the pressure plate is fixedly connected to a connecting rod, the other end of the connecting rod is fixedly connected to an arc plate, the inner wall of the arc plate is fixedly connected to a spring, and the number of the springs is two, one end of the rotor is provided with a rotation groove, the inner wall of the rotation groove is provided with a spring groove, and the number of the spring grooves is multiple, the other end of the spring is fixedly connected to the inner wall of the spring groove, and a threaded ring is threadedly connected to the inner wall of the rotation groove.

[0006] Optionally, the arc-shaped plate is located inside the rotation groove, and the outer wall of the threaded ring is threadedly connected to the inner wall of the rotation groove.

[0007] Optionally, a rotor sleeve is fixedly connected to the outer wall of the rotor, and the rotor sleeve is located between the stator and the rotor.

[0008] Optionally, a water-lubricated bearing is provided inside the housing, and there are two water-lubricated bearings. The two water-lubricated bearings are respectively located at both ends of the rotor. End covers are installed at both ends of the housing. The two end covers are connected to the housing by bolts, and the number of bolts is multiple.

[0009] Optionally, positioning sleeves are provided at both ends of the interior of the housing, and the positioning sleeves are located between the water-lubricated bearing and the end cover.

[0010] Optionally, the inner wall of the threaded ring is provided with a plurality of bumps.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. When the propeller blades need to be replaced, rotate the threaded ring to move the threaded ring outward along the rotating groove, so that the multiple springs change from the original compressed state to the rebound state, thereby separating the pressure plate from the mounting block, and then move the mounting block along the mounting slot in the direction away from the two positioning posts. When the two positioning posts are respectively disengaged from the two positioning holes, remove the mounting block from the mounting slot, insert the new mounting block into the mounting slot, and then move the mounting block along the mounting slot toward the positioning posts until the positioning posts are inserted into the positioning holes. Then rotate the threaded ring to squeeze the multiple arc plates. After the arc plates are squeezed, they push the connecting rod and the pressure plate to press the end of the mounting block that does not have a positioning hole, so that the mounting block is fixed in the mounting slot, making the propeller blade replacement convenient and quick, and saving replacement costs.

[0013] 2. Water-lubricated bearings are provided at both ends of the rotor to reduce the rotational resistance of the rotor and enable the rotor to be limited in the two water-lubricated bearings. By providing two positioning sleeves, the two positioning sleeves correspond to the two water-lubricated bearings one by one, and the two water-lubricated bearings can be limited; a plurality of protrusions are provided on the inner wall of the threaded ring to facilitate the rotation of the threaded ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 A magnified schematic diagram of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the internal structure of the rotor of the utility model;

[0019] Figure 5 This is a structural diagram of the installation block of the utility model;

[0020] Figure 6 This is a schematic structural diagram of the pressing plate of the utility model;

[0021] Figure 7 It is a structural schematic diagram of the threaded ring of the utility model.

[0022] In the figure: 1. Housing; 2. Stator; 3. Rotor; 4. Mounting groove; 5. Positioning column; 6. Mounting block; 7. Blade; 8. Positioning hole; 9. Pressure plate; 10. Connecting rod; 11. Arc plate; 12. Spring; 13. Rotating groove; 14. Spring groove; 15. Threaded ring; 16. Rotor sleeve; 17. Water-lubricated bearing; 18. End cover; 19. Bolt; 20. Positioning sleeve; 21. Bump. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0027] Reference Figure 1-7 , now the embodiment of the present invention provides a shaftless propeller driven by an intermediate rotor axial flux motor. A shaftless propeller driven by an intermediate rotor axial flux motor comprises a housing 1, the inner wall of the housing 1 is fixedly connected to a stator 2, a rotor 3 is arranged inside the stator 2, the inner wall of the rotor 3 is provided with a mounting groove 4, and the number of the mounting grooves 4 is multiple, the inner walls of the multiple mounting grooves 4 are all fixedly connected to positioning columns 5, and the number of the positioning columns 5 is two, the interiors of the multiple positioning columns 5 are all provided with mounting blocks 6, the outer walls of the mounting blocks 6 are fixedly connected to blades 7, the outer wall of the mounting blocks 6 is provided with positioning holes 8, and the number of the positioning holes 8 is two, the positioning columns 5 are located inside the positioning holes 8, and the inner walls of the multiple mounting grooves 4 are provided with positioning columns 5. The rotor 3 is provided with a pressure plate 9, the outer wall of the pressure plate 9 is fixedly connected to a connecting rod 10, the other end of the connecting rod 10 is fixedly connected to an arc plate 11, the inner wall of the arc plate 11 is fixedly connected to a spring 12, and there are two springs 12. A rotation groove 13 is provided at one end of the rotor 3, the arc plate 11 is located inside the rotation groove 13, the inner wall of the rotation groove 13 is provided with a spring groove 14, and there are multiple spring grooves 14. The other end of the spring 12 is fixedly connected to the inner wall of the spring groove 14, and the inner wall of the rotation groove 13 is threadedly connected to a threaded ring 15. The outer wall of the threaded ring 15 is threadedly connected to the inner wall of the rotation groove 13.

[0028] When the blade 7 needs to be replaced, the threaded ring 15 is rotated to move the threaded ring 15 outward along the rotating groove 13, so that the multiple springs 12 change from the original compressed state to the rebound state, thereby separating the pressure plate 9 from the mounting block 6, and then moving the mounting block 6 along the mounting groove 4 in the direction away from the two positioning posts 5. When the two positioning posts 5 are respectively disengaged from the two positioning holes 8, the mounting block 6 is taken out of the mounting groove 4, and a new mounting block 6 is inserted into the mounting groove 4. Then, the mounting block 6 is moved along the mounting groove 4 in the direction of the positioning post 5 until the positioning post 5 is inserted into the positioning hole 8. Then, the threaded ring 15 is rotated to squeeze the multiple arc plates 11. After the arc plates 11 are squeezed, they push the connecting rod 10 and the pressure plate 9 to press the end of the mounting block 6 that does not have the positioning hole 8, so that the mounting block 6 is fixed in the mounting groove 4, thereby making the replacement of the blade 7 convenient and quick, and saving replacement costs.

[0029] In another embodiment of the present invention, please refer to Figure 3The outer wall of the rotor 3 is fixedly connected to a rotor sleeve 16, which is located between the stator 2 and the rotor 3. It protects the rotor 3 and prevents the rotor 3 from direct contact with the stator 2 to cause wear or damage.

[0030] In another embodiment of the present invention, please refer to Figure 3 A water-lubricated bearing 17 is provided inside the housing 1, and there are two water-lubricated bearings 17. The two water-lubricated bearings 17 are respectively located at both ends of the rotor 3. Water-lubricated bearings 17 are respectively provided at both ends of the rotor 3, so that the rotation resistance of the rotor 3 is smaller, and the rotor 3 can be limited in the two water-lubricated bearings 17. End covers 18 are installed at both ends of the housing 1. The two end covers 18 are connected to the housing 1 by bolts 19, and the number of bolts 19 is multiple.

[0031] In another embodiment of the present invention, please refer to Figures 3 to 7 , positioning sleeves 20 are provided at both ends of the interior of the shell 1, and the positioning sleeves 20 are located between the water-lubricated bearing 17 and the end cover 18. By providing two positioning sleeves 20, the two positioning sleeves 20 correspond one-to-one with the two water-lubricated bearings 17 respectively, and the two water-lubricated bearings 17 can be limited. The inner wall of the threaded ring 15 is provided with a protrusion 21, and the number of the protrusions 21 is multiple. Multiple protrusions 21 are provided on the inner wall of the threaded ring 15 to facilitate the rotation of the threaded ring 15.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A shaftless propeller driven by an intermediate rotor axial flux motor, comprising a housing (1), characterized in that: The inner wall of the housing (1) is fixedly connected to a stator (2), a rotor (3) is arranged inside the stator (2), an inner wall of the rotor (3) is provided with a mounting groove (4), and the number of the mounting grooves (4) is multiple, the inner walls of the multiple mounting grooves (4) are all fixedly connected to positioning columns (5), and the number of the positioning columns (5) is two, the interiors of the multiple positioning columns (5) are all provided with mounting blocks (6), the outer wall of the mounting blocks (6) is fixedly connected to a blade (7), the outer wall of the mounting blocks (6) is provided with a positioning hole (8), and the number of the positioning holes (8) is two, the positioning columns (5) are located inside the positioning holes (8), and the multiple A pressure plate (9) is provided inside the mounting groove (4), the outer wall of the pressure plate (9) is fixedly connected to a connecting rod (10), the other end of the connecting rod (10) is fixedly connected to an arc plate (11), the inner wall of the arc plate (11) is fixedly connected to a spring (12), and the number of springs (12) is two; a rotation groove (13) is provided at one end of the rotor (3), the inner wall of the rotation groove (13) is provided with a spring groove (14), and the number of spring grooves (14) is multiple; the other end of the spring (12) is fixedly connected to the inner wall of the spring groove (14), and the inner wall of the rotation groove (13) is threadedly connected to a threaded ring (15).

2. The shaftless propeller driven by an intermediate rotor axial flux motor according to claim 1, characterized in that: The arc-shaped plate (11) is located inside the rotation groove (13), and the outer wall of the threaded ring (15) is threadedly connected to the inner wall of the rotation groove (13).

3. The shaftless propeller driven by an intermediate rotor axial flux motor according to claim 1, characterized in that: The outer wall of the rotor (3) is fixedly connected to a rotor sleeve (16), and the rotor sleeve (16) is located between the stator (2) and the rotor (3).

4. The shaftless propeller driven by an intermediate rotor axial flux motor according to claim 1, characterized in that: A water-lubricated bearing (17) is provided inside the housing (1), and there are two water-lubricated bearings (17). The two water-lubricated bearings (17) are respectively located at the two ends of the rotor (3). End covers (18) are installed at both ends of the housing (1), and the two end covers (18) are connected to the housing (1) by bolts (19), and the number of bolts (19) is multiple.

5. The shaftless propeller driven by an intermediate rotor axial flux motor according to claim 1, characterized in that: Positioning sleeves (20) are provided at both ends of the interior of the housing (1), and the positioning sleeves (20) are located between the water-lubricated bearing (17) and the end cover (18).

6. The shaftless propeller driven by an intermediate rotor axial flux motor according to claim 1, characterized in that: The inner wall of the threaded ring (15) is provided with a plurality of protrusions (21).

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