A low-noise underwater permanent magnet motor combined structure

Abstract

The application relates to the technical field of permanent magnet motors, in particular to a low-noise underwater permanent magnet motor combined structure which comprises a permanent magnet motor body, the permanent magnet motor body is composed of a motor shell, an inner motor body and a ball bearing seat, a loading structure is arranged in the motor shell, an oil storage cylinder and a heating device for preheating the oil storage cylinder are arranged in the loading structure; a centrifugal adjusting mechanism for adjusting the oil storage cylinder is arranged on a mounting plate, the mounting plate is further provided with a guide structure for supporting the oil storage cylinder; a stirring structure is arranged between the oil storage cylinder and a guide rod, and a transmission structure is arranged between a driving motor and a rotating shaft. The application has the advantages of compact structure and non-contact heating, the non-contact heating mode based on magnetic force avoids direct contact and abrasion problems possibly existing in a traditional heating mode, effectively reduces safety hazards, and ensures normal operation of the motor in extremely cold weather.

Description

Technical Field

[0001] This invention relates to a low-noise underwater permanent magnet motor assembly structure, and particularly to a low-noise underwater permanent magnet motor assembly structure, belonging to the field of permanent magnet motor technology. Background Technology

[0002] Permanent magnet motors are lightweight, consume little power, and are flexible in size and shape, making them extremely versatile in applications beyond daily life, including defense and aerospace. This wide range of applications necessitates that permanent magnet motors meet the demands of different environments. For example, some motors operating in humid environments, or even underwater, require strong waterproof capabilities. Heat dissipation in the confined underwater environment is also a significant challenge. Furthermore, in extremely cold weather, low temperatures increase the viscosity of lubricating grease or cause it to solidify or freeze, increasing the static resistance torque of the motor bearings. Existing permanent magnet motors used underwater lack lubricating oil preheating capabilities, which can damage the motor shaft, making it difficult to rotate or even causing it to malfunction.

[0003] Chinese invention patent announcement number CN116885884B discloses "a permanent magnet motor for underwater use with convenient heat dissipation, including a motor housing, an inner body, and a motor shaft. A left cover and a right cover are arranged sequentially on both sides of the motor housing. A connecting pipe is evenly wound around the outside of the motor housing. One end of the connecting pipe is fixedly connected to an air intake pipe, and the other end of the connecting pipe is fixedly connected to an air inlet pipe. This invention, by setting a preheating structure, enables the motor to heat the lubricating oil when encountering extremely cold weather."

[0004] The aforementioned patent has the following drawbacks: In order to heat the lubricating oil, it uses two sets of metal plates that rub against each other to form a preheating structure, so that the motor can solve the problem of low temperature and increase the viscosity of the grease in time when encountering extremely cold weather. However, this method is inefficient, and the contact area between the friction plate and the lubricating oil is limited, so the heating may not be uniform and there is a risk of local overheating. In addition, friction heat may generate sparks or high temperatures, increasing safety hazards.

[0005] Therefore, it is urgent to improve the preheating function to solve the above-mentioned problems. Summary of the Invention

[0006] The purpose of this invention is to provide a low-noise underwater permanent magnet motor assembly structure that has the advantages of high heating efficiency, high safety, and the ability to preheat as needed, effectively solving the aforementioned problems.

[0007] To achieve the above objectives, the main technical solution adopted by the present invention includes: a low-noise underwater permanent magnet motor assembly structure, comprising a permanent magnet motor body, wherein the permanent magnet motor body is composed of a motor housing, an inner body and a ball bearing seat, wherein a loading structure is provided inside the motor housing, and an oil storage tank and a heating device for preheating the oil storage tank are provided inside the loading structure.

[0008] The heating device includes a mounting plate, a drive motor fixedly mounted on the upper surface of the mounting plate, a magnetic block turntable fixedly mounted on the output shaft of the drive motor, a magnetic block detachably mounted inside the magnetic block turntable, and a conductive plate disposed above the magnetic block turntable. The oil storage cylinder is detachably mounted on the upper surface of the conductive plate.

[0009] The mounting plate is provided with a centrifugal adjustment mechanism for adjusting the oil storage tank, and the mounting plate is also provided with a guide structure for supporting the oil storage tank.

[0010] The centrifugal adjustment mechanism includes a rotating shaft rotatably mounted on the upper surface of the mounting plate, a mounting base fixedly mounted on the top of the rotating shaft, a rotating sleeve and a sliding sleeve sleeved on the outer surface of the rotating shaft, and a swing arm hinged to the mounting base. A swing ball is welded to the end of the swing arm away from the mounting base. A connecting rod is hinged between the swing arm and the rotating sleeve. The rotating sleeve is rotatably mounted on the outer surface of the sliding sleeve.

[0011] The guide structure includes a guide rod fixedly mounted on the upper surface of the mounting plate, a mounting sleeve sleeved on the outer surface of the guide rod, and a connecting platform welded to the outer surface of the mounting sleeve and fixed to the conductive plate.

[0012] A pushing member is provided between the sliding sleeve and the connecting platform. The pushing member includes a first pushing arm hinged to the outer surface of the sliding sleeve and a second pushing arm vertically installed on the side of the connecting platform away from the conductive plate. The first pushing arm and the second pushing arm are hinged to each other at adjacent ends.

[0013] A stirring structure is provided between the oil storage tank and the guide rod. The stirring structure includes a stirring rod rotatably installed inside the oil storage tank and a transmission component connected to the stirring rod at the top of the guide rod. The transmission component includes a connecting shaft fixedly installed at one end of the stirring rod and a rack fixedly installed at the top of the guide rod. A gear that meshes with the rack is fixedly installed at the end of the connecting shaft away from the stirring rod.

[0014] A transmission structure is provided between the drive motor and the rotating shaft. The transmission structure includes two transmission wheels and a transmission belt connecting the two transmission wheels. The two transmission wheels are respectively fixed to the outer surface of the output shaft of the drive motor and the outer surface of the rotating shaft.

[0015] Preferably, the loading structure includes a base plate, a housing fixedly installed on the upper surface of the base plate, and a lifting rod welded to the upper surface of the housing for fixing. The lifting rod is fixed to the inner wall of the motor housing by bolts.

[0016] Preferably, an oil drain pipe is fixedly installed inside the shell, and an oil delivery pipe connected to the oil drain pipe is fixedly connected to the outer surface of the oil storage cylinder.

[0017] Preferably, the drive motor is bolted to the upper surface of the mounting plate, the mounting plate is fixedly mounted to the upper surface of the base plate, and the magnetic block turntable has several mounting slots arranged in a ring shape at equal intervals inside. The number of magnetic blocks corresponds to the number of mounting slots and they are installed sequentially inside the several mounting slots.

[0018] Preferably, the plurality of magnetic blocks are two sets of magnetic blocks of equal quantity, and the two sets of magnetic blocks are north and south pole magnetic blocks, and the north and south pole magnetic blocks are arranged at intervals. The magnetic blocks and the mounting groove are both circular in shape.

[0019] Preferably, a mounting ring is rotatably mounted on the outer surface of the rotating shaft, and a return spring is fixedly connected between the mounting ring and the sliding sleeve, with the return spring surrounding the outer surface of the rotating shaft.

[0020] Preferably, there are two swing arms, two swing balls, and two connecting rods, and the two swing arms are symmetrically arranged on both sides of the mounting base.

[0021] Preferably, the swing ball has a certain gravity, and the first push arm and the second push arm are respectively connected to the sliding sleeve and the connecting platform through hinge seats. Both hinge seats are provided with adjusting bolts to facilitate the adjustment of the position of the connecting platform by the first push arm squeezing the second push arm when the sliding sleeve moves up and down.

[0022] Preferably, a mounting platform is fixedly installed on the outer surface of the guide rod, and a buffer spring is fixedly connected to the upper surface of the mounting platform and the lower surface of the connecting platform, and the buffer spring surrounds the outer surface of the guide rod.

[0023] Preferably, a limiting seat for supporting the connecting shaft is bolted to the upper surface of the connecting platform, and the connecting shaft is connected to the limiting seat through a bearing.

[0024] This invention has at least the following beneficial effects:

[0025] 1. When this low-noise underwater permanent magnet motor combination structure is in use, the drive motor drives the magnetic block turntable loaded with S and N pole magnetic blocks. During the rotation of the magnetic block turntable, a changing magnetic field is generated. The change of magnetic force generates eddy currents in the conductive plate, which in turn generates heat to heat the lubricating oil. At the same time, magnetic heating is a non-contact heating method, avoiding the direct contact and wear problems that may occur in traditional heating methods, effectively reducing safety hazards. Moreover, magnetic heating can penetrate the lubricating oil to achieve relatively uniform heating.

[0026] 2. When this low-noise underwater permanent magnet motor assembly structure is in use, the speed of the drive motor is increased, and the transmission structure drives the rotating shaft to rotate. The rotation of the rotating shaft drives the swing arm to rotate. When the swing arm rotates, the centrifugal force generated by the gravity of the swing ball will cause the swing arm to open outward. The connecting rod drives the sliding sleeve to move upward. The upward movement of the sliding sleeve moves the connecting platform downward through the first push arm and the second push arm, thereby adjusting the distance between the conductive plate and the magnetic block turntable and improving the flexibility of lubricating oil heating.

[0027] 3. When this low-noise underwater permanent magnet motor combination structure is in use, the centrifugal adjustment mechanism is driven by the transmission structure to adjust the distance between the conductive plate and the magnetic block turntable, which makes it easy to control the heating temperature of the lubricating oil and makes the heating of the lubricating oil more flexible. When the connecting platform moves up and down, the gear and rack mesh and drive the stirring rod to rotate through the connecting shaft, thereby stirring the lubricating oil in the oil storage tank and thawing the solid oil inside the oil storage tank.

[0028] 4. This low-noise underwater permanent magnet motor assembly structure has the advantages of flexible adjustment, compact structure and non-contact heating, which ensures that the motor can operate normally even in extremely cold weather.

[0029] 5. This low-noise underwater permanent magnet motor assembly structure preheats the lubricating oil, which enhances its fluidity and allows it to better penetrate all parts of the bearing, forming a uniform lubricating film. This helps reduce friction and wear during bearing operation, thereby reducing mechanical noise caused by friction. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0031] Figure 1 This is a schematic diagram of the permanent magnet motor body structure of the present invention;

[0032] Figure 2 For the present invention Figure 1 A magnified structural diagram of structure A is shown below;

[0033] Figure 3 This is a schematic diagram of the heating device, centrifugal adjustment mechanism, guiding structure, and stirring structure of the present invention.

[0034] Figure 4 This is a schematic diagram of the shell structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the loading structure of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the heating device of the present invention;

[0037] Figure 7 This is a schematic diagram of the magnetic block turntable of the present invention;

[0038] Figure 8 This is a schematic diagram of the centrifugal adjustment mechanism of the present invention;

[0039] Figure 9 This is a schematic diagram of the guiding structure of the present invention;

[0040] Figure 10 This is a schematic diagram of the stirring structure of the present invention;

[0041] Figure 11 This is a schematic diagram of the transmission structure of the present invention.

[0042] In the diagram, 1. Permanent magnet motor body; 101. Motor housing; 102. Inner body; 103. Ball bearing seat; 2. Loading structure; 201. Base plate; 202. Housing; 203. Lifting rod; 204. Oil drain pipe; 3. Oil storage tank; 31. Oil delivery pipe; 4. Heating device; 401. Mounting plate; 402. Drive motor; 403. Magnetic block turntable; 404. Mounting groove; 405. Magnetic block; 406. Conductive plate; 5. Centrifugal adjustment mechanism; 501. Rotating shaft; 502. Mounting base; 503. Rotating sleeve; 504. 505. Swing arm; 506. Swing ball; 507. Connecting rod; 508. Sliding sleeve; 509. First push arm; 510. Second push arm; 511. Mounting ring; 512. Return spring; 6. Guide structure; 601. Guide rod; 602. Mounting sleeve; 603. Connecting platform; 604. Mounting platform; 605. Buffer spring; 7. Stirring structure; 701. Stirring rod; 702. Connecting shaft; 703. Gear; 704. Rack; 705. Limit seat; 8. Transmission structure; 801. Transmission wheel; 802. Transmission belt. Detailed Implementation

[0043] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0044] like Figure 1 - Figure 5 As shown, the low-noise underwater permanent magnet motor assembly structure provided in this embodiment includes a permanent magnet motor body 1, which consists of a motor housing 101, an inner body 102, and a ball bearing seat 103. The motor housing 101 is internally provided with a loading structure 2, which includes a base plate 201, a housing 202 fixedly mounted on the upper surface of the base plate 201, and a boom 203 welded to the upper surface of the housing 202 for fixing. The boom 203 is fixed to the inner wall of the motor housing 101 by bolts. The inner body 102 and the ball bearing seat 103 are both fixedly mounted inside the motor housing 101.

[0045] In this embodiment, as Figure 4 and Figure 5 As shown, an oil drain pipe 204 is fixedly installed inside the housing 202, and an oil delivery pipe 31 connected to the oil drain pipe 204 is fixedly connected to the outer surface of the oil reservoir 3. A valve is installed on the oil drain pipe 204 to deliver lubricating oil.

[0046] To achieve preheating for lubrication, in this embodiment, the loading structure 2 is equipped with an oil reservoir 3 and a heating device 4 for preheating the oil reservoir 3; for example... Figure 3 , Figure 6 and Figure 7 As shown, the heating device 4 includes a mounting plate 401, a drive motor 402 fixedly mounted on the upper surface of the mounting plate 401, a magnetic block turntable 403 fixedly mounted on the output shaft of the drive motor 402, magnetic blocks 405 detachably mounted inside the magnetic block turntable 403, and a conductive plate 406 disposed above the magnetic block turntable 403. The oil storage cylinder 3 is detachably mounted on the upper surface of the conductive plate 406. The drive motor 402 is bolted to the upper surface of the mounting plate 401, and the mounting plate 401 is fixedly mounted on the upper surface of the base plate 201. The magnetic block turntable 403 has several mounting slots 404 arranged in a ring shape at equal intervals inside. The number of magnetic blocks 405 corresponds to the number of mounting slots 404 and they are installed sequentially inside the several mounting slots 404.

[0047] Specifically, the magnetic blocks 405 are divided into two equal groups of magnetic blocks 405, with each group representing a north-south pole magnetic block 405, and the north-south pole magnetic blocks 405 are spaced apart. Both the magnetic blocks 405 and the mounting groove 404 are circular in shape. The magnetic block turntable 403 is rotated by the drive motor 402. The turntable 403 contains S and N pole magnetic blocks 405, generating a changing magnetic field. In addition, the conductive plate 406 located above the turntable 403 is in this changing magnetic field, and an induced current is generated in the conductive plate 406. When this induced current flows in the conductive plate 406, it generates heat, thereby heating the oil reservoir 3 and heating the lubricating oil.

[0048] It should be noted that magnetic heating is a non-contact heating method, avoiding the direct contact and wear problems that may occur in traditional heating methods. The oil reservoir 3 uses a thermally conductive material, and the conductive plate 406 is a charged magnetic block or copper block. When the aluminum block is conductive and is placed in this changing magnetic field, according to Faraday's law of electromagnetic induction, an induced current (eddy current) will be generated in the aluminum block. As these induced currents flow in the aluminum block, they generate heat, thereby heating the aluminum block. This mechanism is called electromagnetic induction heating. Compared with friction production, this method has a compact structure and is non-contact heating, thus offering higher safety and efficiency.

[0049] To ensure the stable lifting and lowering of the conductive plate 406, in this embodiment, the mounting plate 401 is also provided with a guide structure 6 to support the oil storage cylinder 3; such as Figure 9 As shown, the guide structure 6 includes a guide rod 601 fixedly installed on the upper surface of the mounting plate 401, a mounting sleeve 602 sleeved on the outer surface of the guide rod 601, and a connecting platform 603 welded to the outer surface of the mounting sleeve 602 and fixed to the conductive plate 406; the first push arm 508 and the second push arm 509 are respectively connected to the sliding sleeve 507 and the connecting platform 603 through hinge seats, and both hinge seats are provided with adjusting bolts, so that when the sliding sleeve 507 moves up and down, the first push arm 508 presses the second push arm 509 to realize the position adjustment of the connecting platform 603.

[0050] A mounting platform 604 is fixedly installed on the outer surface of the guide rod 601, and a buffer spring 605 is fixedly connected to the upper surface of the mounting platform 604 and the lower surface of the connecting platform 603, with the buffer spring 605 surrounding the outer surface of the guide rod 601. The mounting platform 604 is located below the connecting platform 603. The installation of the buffer spring 605 can buffer the downward movement of the connecting platform 603, improving the stability of the conductive plate 406 during lifting and lowering.

[0051] To improve the flexibility of lubricating oil heating, in this embodiment, the mounting plate 401 is provided with a centrifugal adjustment mechanism 5 for adjusting the oil reservoir 3, such as... Figure 8 As shown, the centrifugal adjustment mechanism 5 includes a rotating shaft 501 rotatably mounted on the upper surface of the mounting plate 401, a mounting base 502 fixedly mounted on the top of the rotating shaft 501, a rotating sleeve 503 and a sliding sleeve 507 sleeved on the outer surface of the rotating shaft 501, and a swing arm 504 hinged to the mounting base 502. A swing ball 505 is welded to one end of the swing arm 504 away from the mounting base 502. A connecting rod 506 is hinged between the swing arm 504 and the rotating sleeve 503. The rotating sleeve 503 is rotatably mounted on the outer surface of the sliding sleeve 507. A pushing member is provided between the sliding sleeve 507 and the connecting platform 603. The pushing member includes a first pushing arm 508 hinged to the outer surface of the sliding sleeve 507 and a second pushing arm 509 vertically mounted on the side of the connecting platform 603 away from the conductive plate 406. The adjacent ends of the first pushing arm 508 and the second pushing arm 509 are hinged together.

[0052] In this embodiment, an mounting ring 510 is rotatably mounted on the outer surface of the rotating shaft 501, and a return spring 511 is fixedly connected between the mounting ring 510 and the sliding sleeve 507, and the return spring 511 surrounds the outer surface of the rotating shaft 501.

[0053] Specifically, there are two swing arms 504, two swing balls 505, and two connecting rods 506, with the two swing arms 504 symmetrically arranged on both sides of the mounting base 502. The swing ball 505 has a certain gravity. In use, the drive motor 402 drives the rotating shaft 501 to rotate via the transmission structure 8. The rotation of the rotating shaft 501 drives the swing arms 504 to rotate. When the swing arms 504 rotate, centrifugal force is generated due to the gravity of the swing balls 505, causing the swing arms 504 to open outward. The connecting rod 506 drives the sliding sleeve 507 to move upward. The upward movement of the sliding sleeve 507 moves the connecting platform 603 downward via the first push arm 508 and the second push arm 509, thereby adjusting the distance between the conductive plate 406 and the magnetic block turntable 403 and improving the flexibility of lubricating oil heating.

[0054] To drive the centrifugal adjustment mechanism 5, in this embodiment, a transmission structure 8 is provided between the drive motor 402 and the rotating shaft 501, such as... Figure 10 As shown, the transmission structure 8 includes two transmission wheels 801 and a transmission belt 802 connecting the two transmission wheels 801. The two transmission wheels 801 are respectively fixed to the outer surface of the output shaft of the drive motor 402 and the outer surface of the rotating shaft 501. The two transmission wheels 801 are of different sizes.

[0055] To further improve the flow effect of lubricating oil, in this embodiment, a stirring structure 7 is provided between the oil reservoir 3 and the guide rod 601, such as... Figure 11 As shown, the stirring structure 7 includes a stirring rod 701 rotatably mounted inside the oil storage tank 3 and a transmission component connected to the stirring rod 701 at the top of the guide rod 601. The transmission component includes a connecting shaft 702 fixedly mounted at one end of the stirring rod 701 and a rack 704 fixedly mounted at the top of the guide rod 601. A gear 703 that meshes with the rack 704 is fixedly mounted at the end of the connecting shaft 702 away from the stirring rod 701. A limiting seat 705 supporting the connecting shaft 702 is bolted to the upper surface of the connecting platform 603, and the connecting shaft 702 is connected to the limiting seat 705 through a bearing. When the connecting platform 603 moves up and down, the gear 703 meshes with the rack 704, using the connecting shaft 702 to drive the stirring rod 701 to rotate, thereby stirring the lubricating oil in the oil storage tank 3 and thawing the solid oil inside the oil storage tank 3.

[0056] like Figure 1 - Figure 11 As shown, the principle of the low-noise underwater permanent magnet motor combination structure provided in this embodiment is as follows:

[0057] When this invention is used, the drive motor 402 drives the magnetic block turntable 403 to rotate. The magnetic block turntable 403 is equipped with S and N level magnetic blocks 405, which generate a changing magnetic field. The conductive plate 406 located above the magnetic block turntable 403 is in this changing magnetic field. Induced current is generated in the conductive plate 406. When these induced currents flow in the conductive plate 406, they generate heat, thereby heating the oil storage cylinder 3 and realizing the heating of the lubricating oil.

[0058] In addition, when it is necessary to adjust the heating efficiency, the speed of the drive motor 402 is increased, and the transmission structure 8 drives the rotating shaft 501 to rotate. The rotation of the rotating shaft 501 drives the swing arm 504 to rotate. When the swing arm 504 rotates, centrifugal force is generated due to the gravity of the swing ball 505, so the swing arm 504 will open outward. The connecting rod 506 drives the sliding sleeve 507 to move upward. The upward movement of the sliding sleeve 507 moves the connecting platform 603 downward through the first push arm 508 and the second push arm 509, thereby adjusting the distance between the conductive plate 406 and the magnetic block turntable 403 and improving the flexibility of lubricating oil heating.

[0059] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0060] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0061] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A low-noise underwater permanent magnet motor assembly structure, comprising a permanent magnet motor body (1), characterized in that, The permanent magnet motor body (1) is composed of a motor housing (101), an inner body (102) and a ball bearing seat (103). The motor housing (101) is provided with a loading structure (2). The loading structure (2) is provided with an oil storage cylinder (3) and a heating device (4) for preheating the oil storage cylinder (3). The heating device (4) includes a mounting plate (401), a drive motor (402) fixedly mounted on the upper surface of the mounting plate (401), a magnetic block turntable (403) fixedly mounted on the output shaft of the drive motor (402), a magnetic block (405) detachably mounted inside the magnetic block turntable (403), and a conductive plate (406) disposed above the magnetic block turntable (403). The oil storage cylinder (3) is detachably mounted on the upper surface of the conductive plate (406). The mounting plate (401) is provided with a centrifugal adjustment mechanism (5) for adjusting the oil storage cylinder (3), and the mounting plate (401) is also provided with a guide structure (6) for supporting the oil storage cylinder (3). The centrifugal adjustment mechanism (5) includes a rotating shaft (501) rotatably mounted on the upper surface of the mounting plate (401), a mounting base (502) fixedly mounted on the top of the rotating shaft (501), a rotating sleeve (503) and a sliding sleeve (507) sleeved on the outer surface of the rotating shaft (501), and a swing arm (504) hinged to the mounting base (502). A swing ball (505) is welded to one end of the swing arm (504) away from the mounting base (502). A connecting rod (506) is hinged between the swing arm (504) and the rotating sleeve (503). The rotating sleeve (503) is rotatably mounted on the outer surface of the sliding sleeve (507). The guide structure (6) includes a guide rod (601) fixedly installed on the upper surface of the mounting plate (401), a mounting sleeve (602) sleeved on the outer surface of the guide rod (601), and a connecting platform (603) welded to the outer surface of the mounting sleeve (602) and fixed to the conductive plate (406). A pusher is provided between the sliding sleeve (507) and the connecting platform (603). The pusher includes a first pusher arm (508) hinged to the outer surface of the sliding sleeve (507) and a second pusher arm (509) vertically installed on the side of the connecting platform (603) away from the conductive plate (406). The first pusher arm (508) and the second pusher arm (509) are hinged at adjacent ends. A stirring structure (7) is provided between the oil storage tank (3) and the guide rod (601). The stirring structure (7) includes a stirring rod (701) rotatably installed inside the oil storage tank (3) and a transmission component connected to the stirring rod (701) at the top of the guide rod (601). The transmission component includes a connecting shaft (702) fixedly installed at one end of the stirring rod (701) and a rack (704) fixedly installed at the top of the guide rod (601). A gear (703) that meshes with the rack (704) is fixedly installed at the end of the connecting shaft (702) away from the stirring rod (701). A transmission structure (8) is provided between the drive motor (402) and the rotating shaft (501). The transmission structure (8) includes two transmission wheels (801) and a transmission belt (802) that is connected between the two transmission wheels (801). The two transmission wheels (801) are respectively fixed to the outer surface of the output shaft of the drive motor (402) and the outer surface of the rotating shaft (501).

2. The low-noise underwater permanent magnet motor assembly structure according to claim 1, characterized in that: The loading structure (2) includes a base plate (201), a housing (202) fixedly installed on the upper surface of the base plate (201), and a lifting rod (203) welded to the upper surface of the housing (202) for fixing. The lifting rod (203) is fixed to the inner wall of the motor housing (101) by bolts.

3. The low-noise underwater permanent magnet motor assembly structure according to claim 2, characterized in that: An oil drain pipe (204) is fixedly installed inside the housing (202), and an oil delivery pipe (31) connected to the oil drain pipe (204) is fixedly connected to the outer surface of the oil storage cylinder (3).

4. The low-noise underwater permanent magnet motor assembly structure according to claim 3, characterized in that: The drive motor (402) is bolted to the upper surface of the mounting plate (401), the mounting plate (401) is fixedly mounted on the upper surface of the base plate (201), and the magnetic block turntable (403) has several mounting slots (404) arranged in a ring shape at equal intervals inside. The number of magnetic blocks (405) corresponds to the number of mounting slots (404) and they are installed in the several mounting slots (404) in sequence.

5. The low-noise underwater permanent magnet motor assembly structure according to claim 4, characterized in that: The magnetic blocks (405) are two sets of magnetic blocks (405) of equal quantity, and the two sets of magnetic blocks (405) are north and south pole magnetic blocks (405), and the north and south pole magnetic blocks (405) are spaced apart. The magnetic blocks (405) and the mounting groove (404) are both circular in shape.

6. The low-noise underwater permanent magnet motor assembly structure according to claim 1, characterized in that: An installation ring (510) is rotatably mounted on the outer surface of the rotating shaft (501), and a return spring (511) is fixedly connected between the installation ring (510) and the sliding sleeve (507), and the return spring (511) surrounds the outer surface of the rotating shaft (501).

7. The low-noise underwater permanent magnet motor assembly structure according to claim 1, characterized in that: The number of swing arms (504), swing balls (505) and connecting rods (506) are all two, and the two swing arms (504) are symmetrically arranged on both sides of the mounting base (502).

8. The low-noise underwater permanent magnet motor assembly structure according to claim 1, characterized in that: The swing ball (505) has a certain gravity. The first push arm (508) and the second push arm (509) are connected to the sliding sleeve (507) and the connecting platform (603) respectively through the hinge seat. Both hinge seats are equipped with adjusting bolts so that the sliding sleeve (507) can press the second push arm (509) through the first push arm (508) when it moves up and down, thereby realizing the position adjustment of the connecting platform (603).

9. The low-noise underwater permanent magnet motor assembly structure according to claim 1, characterized in that: A mounting platform (604) is fixedly installed on the outer surface of the guide rod (601), and a buffer spring (605) is fixedly connected to the upper surface of the mounting platform (604) and the lower surface of the connecting platform (603), and the buffer spring (605) surrounds the outer surface of the guide rod (601).

10. The low-noise underwater permanent magnet motor assembly structure according to claim 1, characterized in that: The upper surface of the connecting platform (603) is bolted with a limiting seat (705) that supports the connecting shaft (702), and the connecting shaft (702) is connected to the limiting seat (705) via a bearing.

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