CN220448113U

CN220448113U - Magnetic coupling propeller

Info

Publication number: CN220448113U
Application number: CN202322038521.3U
Authority: CN
Inventors: 毕珊珊; 韩光勇; 董章君
Original assignee: Shandong Platinum Power Technology Co ltd
Current assignee: Shandong Platinum Power Technology Co ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-02-06
Anticipated expiration: 2033-07-31

Abstract

The application relates to the technical field of underwater propulsion equipment, in particular to a magnetic coupling propeller, which comprises a propeller shell, a propeller, a motor, a sealing part and a magnetic coupling part, wherein the motor is arranged in the sealing part; the driving magnetic steel is fixedly connected to the outer side wall of the rotor shell of the motor, and the driven magnetic steel is fixedly connected to the inner side wall of the propeller. The propeller in the application does not need to be connected with the driving magnetic steel and the driven magnetic steel by arranging an independent structure, so that the structure of the propeller is simplified, the volume of the propeller is reduced, and the propeller is convenient to install.

Description

Magnetic coupling propeller

Technical Field

The application relates to the technical field of underwater propulsion equipment, in particular to a magnetic coupling propeller.

Background

The underwater propeller drives the propeller to rotate through a motor or a hydraulic motor to generate propulsion power, and is an essential component of an underwater robot and underwater position control equipment. Whether motor driving or hydraulic motor driving is adopted, the sealing problem of the driving unit is a technical problem which needs to be solved by the underwater propeller.

At present, most of the propellers in the market use a dynamic sealing mode, wherein the dynamic sealing mode is that a driving unit is connected with a propeller through a through shaft, a sealing ring is adopted between a connecting shaft and a shell for sealing, and the connecting shaft and the shell rotate relatively, so that the dynamic sealing mode is called dynamic sealing. The dynamic sealing method is simple in structure, but has the problems of unreliable sealing, abrasion of sealing and the like, so that the sealing ring needs to be replaced regularly, the dynamic sealing method is gradually replaced, and particularly, the underwater propeller is not generally adopted when the depth is large.

At present, the method for solving the problem of dynamic sealing of the propeller is mainly to add a magnetic coupler, and transfer torque through magnetic force to convert the dynamic sealing into static sealing. However, the current magnetic coupling propeller generally has the problems of larger propeller volume and larger required installation space.

Disclosure of Invention

The purpose of this application is to provide a small in size, the magnetic coupling propeller of convenient installation.

The embodiment of the application can be realized through the following technical scheme:

the utility model provides a magnetic coupling propeller, includes propeller shell, screw, motor, sealing and magnetic coupling portion, the motor install in the inside of sealing, sealing install in the inside of screw, the screw install in the inside of propeller shell, the motor passes through magnetic coupling portion drives the screw is rotatory.

The magnetic coupling part comprises active magnetic steel and passive magnetic steel, and the active magnetic steel and the passive magnetic steel are annular members which are arranged on the inner side and the outer side of the sealing part and are linked through magnetic coupling;

the driving magnetic steel is fixedly connected to the outer side wall of the rotor shell of the motor, and the driven magnetic steel is fixedly connected to the inner side wall of the propeller.

Further, the active magnetic steel and the passive magnetic steel comprise a plurality of fan-shaped magnetic steels, and the magnetic steels of the active magnetic steel and the passive magnetic steel are in one-to-one correspondence.

Further, the propeller shell comprises an outer cover and a guide cover, and the outer cover is detachably connected with the guide cover.

Further, the outer cover comprises a cover shell and an end cover, the cover shell is of a cylindrical structure, one end of the cover shell along the axial direction of the cover shell is fixedly connected with the end cover through a connecting rod, and the other end of the cover shell is detachably connected with the air guide cover through the connecting rod.

Further, the sealing part is arranged in the propeller, and part of the sealing part extends out of the propeller to be abutted with the propeller shell;

the outer diameter of the end cover is the same as the outer diameter of the air guide sleeve.

Further, the sealing part comprises a sealing shell and a sealing cover, the motor is connected with the sealing shell through a motor fixing piece, the motor fixing piece and the sealing cover are fixedly connected to two sides of the sealing shell in the axial direction, the motor fixing piece is positioned at one side close to the air guide sleeve, and the sealing cover is positioned at one side close to the end cover;

one end of the sealing shell along the axial direction of the sealing shell is connected with the air guide sleeve, the other end of the sealing shell is connected with the sealing cover, and the sealing shell is positioned between the active magnetic steel and the passive magnetic steel in the radial direction of the sealing shell;

and a cavity between the motor and the guide cover is sealed.

Further, the sealing shell comprises an imbedding part and a limiting part, the outer diameter of the limiting part is larger than that of the imbedding part, the imbedding part is accommodated in the propeller, and the limiting part extends out of the propeller and is abutted to the guide cover.

Further, a protruding portion is arranged at one end, facing the end cover, of the sealing cover, and penetrates through the propeller and is in threaded connection with the nut.

Further, the propeller further comprises a positioning support ring and a limiting ring, wherein the positioning support ring is sleeved outside the imbedding part and positioned between the propeller and the limiting part in the axial direction, and the limiting ring is sleeved outside the protruding part and positioned between the propeller and the nut in the axial direction;

the positioning support ring and the limiting ring are made of high polymer water lubrication bearing materials.

Preferably, a wave washer, a flat washer and a spring washer are sequentially arranged between the limiting ring and the nut.

The embodiment of the application provides a magnetic coupling propeller which has at least the following beneficial effects:

(1) The propeller is provided with the magnetic coupling part, so that the dynamic seal is converted into the static seal, the problem of possible failure of the dynamic seal is avoided, and the seal is more reliable;

(2) The magnetic coupling part comprises the active magnetic steel and the passive magnetic steel, the active magnetic steel is fixedly connected to the outer side wall of the rotor shell of the motor, the passive magnetic steel is fixedly connected to the inner side wall of the propeller, and the propeller is not required to be connected with the active magnetic steel and the passive magnetic steel by arranging an independent structure, so that the structure of the propeller is simplified, the size of the propeller is reduced, and the propeller is convenient to install;

(3) The positioning support ring and the limiting ring are made of high-molecular water lubrication bearing materials, so that on one hand, the materials have excellent wear resistance and self-lubrication performance, the positioning support ring and the limiting ring can replace the traditional bearings and other structures, the structure and the size of the propeller are simplified, and the overall structure of the propeller is simpler and more compact; on the other hand, the material has good corrosion resistance, and an independent sealing structure is not required to be designed for protection, so that the cost is saved, the energy consumption is reduced, and the volume of the propeller is further reduced.

Drawings

FIG. 1 is an overall block diagram of a magnetically coupled propeller of the present application;

FIG. 2 is a cross-sectional view of a magnetically coupled impeller of the present application;

fig. 3 is an exploded view of a magnetically coupled propeller of the present application.

Reference numerals: 1. propeller shell, 11, housing, 111, housing, 112, end cover, 12, air guide housing, 2, screw, 3, motor, 31, motor fixing piece, 41, sealing shell, 411, imbedding part, 412, limit part, 42, sealing cover, 431, protruding part, 432, nut, 5, magnetic coupling part, 51, driving magnetic steel, 52, driven magnetic steel, 6, positioning support ring, 7, limit ring, 8, wave washer, 9, plain washer, 10, spring washer.

Detailed Description

The present application will be further described below based on preferred embodiments with reference to the accompanying drawings.

The terminology used in this description is for the purpose of describing the embodiments of the present application and is not intended to be limiting of the present application. Unless specifically stated or limited otherwise, the terms "disposed," "connected," and "connected" should be construed broadly, as if they were fixedly connected, detachably connected, or integrally connected, for example; the two components can be connected mechanically, directly or indirectly through an intermediate medium, and can be communicated internally. The specific meaning of the terms in this application will be specifically understood by those skilled in the art.

In addition, in the description of the embodiments of the present application, various components on the drawings are enlarged or reduced for the convenience of understanding, but this is not intended to limit the scope of protection of the present application.

Fig. 1-3 respectively show an overall structure diagram, a sectional view and an explosion diagram of a magnetic coupling propeller in the present application, as shown in fig. 1-3, the propeller comprises a propeller housing 1, a propeller 2, a motor 3, a sealing part and a magnetic coupling part 5, the motor 3 is installed in the sealing part, the sealing part is installed in the propeller 2, and part of the sealing part extends out of the propeller 2 to be abutted against the propeller housing 1, the propeller 2 is installed in the propeller housing 1, and the motor 3 drives the propeller 2 to rotate through the magnetic coupling part 5, so that the propeller is advanced.

Further, the magnetic coupling portion 5 includes an active magnetic steel 51 and a passive magnetic steel 52, the active magnetic steel 51 and the passive magnetic steel 52 are annular members which are arranged on the inner side and the outer side of the sealing portion and are linked through a magnetic coupling effect, the active magnetic steel 51 is fixedly connected to the outer side wall of the rotor housing of the motor 3, the passive magnetic steel 52 is fixedly connected to the inner side wall of the propeller 2, the active magnetic steel 51 is driven by the motor 3, and the passive magnetic steel 52 drives the propeller 2. The driving magnetic steel 51 and the driven magnetic steel 52 are fixedly connected with the motor 3 and the propeller 2 respectively, and the propeller is connected with the driving magnetic steel 51 and the driven magnetic steel 52 without arranging an independent structure, so that the structure of the propeller is simplified, the size of the propeller is reduced, and the propeller is convenient to install.

Specifically, the motor 3, the driving magnetic steel 51, the driven magnetic steel 52 and the propeller 2 are coaxially arranged, and the motor 3, the driving magnetic steel 51, the driven magnetic steel 52 and the propeller 2 can coaxially rotate relative to the propeller shell 1, so that the propeller can be driven forward.

In some preferred embodiments of the present application, the active magnetic steel 51 and the passive magnetic steel 52 each include a plurality of fan-shaped magnetic steels, and the magnetic steels of the active magnetic steel 51 and the passive magnetic steel 52 are in one-to-one correspondence, and the fan-shaped magnetic steels can be better matched with the outer side wall of the rotor housing of the motor 3 and the inner side wall of the propeller 2, so as to realize stable connection between the active magnetic steel 51 and the passive magnetic steel 52 and the motor 3 and the propeller 2.

In some preferred embodiments of the present application, the active magnetic steel 51 and the passive magnetic steel 52 are respectively connected with the motor 3 and the propeller 2 by means of gluing, and this method has advantages of convenient processing, low cost and convenient mass production, and improves the production efficiency.

Further, the propeller housing 1 is a main structural member of the present propeller for loading other components in the propeller, and the propeller housing 1 is mounted to the stern of the underwater vehicle. In this embodiment, the propeller housing 1 comprises a housing 11 and a pod 12, the housing 11 being detachably connected to the pod 12, the housing 11 and pod 12 forming a carrier member for mounting the propeller 2.

Further, the housing 11 includes a casing 111, an end cap 112, the casing 111 and a cylindrical structure, one end of the casing 111 in the axial direction thereof is fixedly connected with the end cap 112 through a connecting rod, and the other end is detachably connected with the pod 12 through a connecting rod.

In some preferred embodiments of the present application, the pod 12 is coupled to the housing 11 by bolts.

In some preferred embodiments of the present application, to facilitate installation of the propeller 2, the outer diameter of the end cap 112 is the same size as the outer diameter of the pod 12 to match the outer diameter of the propeller 2.

Further, the motor 3 is mounted in the sealing portion as a power member of the propeller, and the motor 3 is mounted in the sealing portion.

Further, the sealing portion is a space having absolute waterproof property in the propeller housing 1 for mounting the motor 3, the driving magnetic steel 51. In this embodiment, the sealing part includes a sealing case 41 and a sealing cover 42, the sealing cover 42 is fixedly connected to the sealing case 41, and the sealing cover 42 is connected to a side of the sealing case 41 near the end cap 112.

Further, one end of the seal case 41 in the axial direction thereof is connected to the pod 12, and the other end is connected to the seal cover 42; the seal housing 41 is located between the active magnetic steel 51 and the passive magnetic steel 52 in the radial direction.

Further, in order to realize that the sealing shell 41 can be mounted inside the propeller 2 and also can be matched with the air guide sleeve 12 and the end cover 112 to realize the axial limiting of the propeller 2, the sealing shell 41 comprises an inserting portion 411 and a limiting portion 412, the outer diameter of the limiting portion 412 is larger than that of the inserting portion 411, the inserting portion 411 is accommodated inside the propeller 2, and the limiting portion 412 extends out of the propeller 2 and is abutted to the air guide sleeve 12.

Further, the motor 3 is a power component of the propeller, and the propeller is mounted in the sealing portion. The motor 3 is fixedly connected with the sealing shell 41 through the motor fixing piece 31, the motor fixing piece 31 is connected to one side, close to the guide cover 12, of the sealing shell 41, limiting of the axial direction of the motor 3 can be achieved through the motor fixing piece 31 and the sealing cover 42, the input end of the motor 3 is connected with external power supply equipment through the motor fixing piece 31 and the guide cover 12, and after connection is completed, sealing treatment is conducted on a cavity between the motor 3 and the guide cover 12, so that sealing protection of the input end of the motor 3 is achieved.

It is conceivable that the motor 3 and the motor fixing member 31 may be fixedly connected by means of gluing, welding, screw connection, or may be connected by means of integral molding, and no matter what connection means is adopted, it is only necessary to achieve stable connection between the motor 3 and the motor fixing member 31.

In some preferred embodiments of the present application, the cavity between the motor 3 and the pod 12 is sealed by glue filling, which has advantages of convenient processing, low cost and reliable sealing.

Further, the propeller 2 is mounted in the propeller housing 1 and located outside the sealing portion.

Specifically, one end of the propeller 2 in the axial direction thereof is connected with the sealing portion, and the other end is abutted with the pod 12 through the limiting portion 412 to realize axial limiting of the propeller 2.

Further, in order to achieve stable connection of the sealing portion to the propeller 2, one end of the sealing cover 42 facing the end cover 112 is provided with a protrusion 431, and the protrusion 431 penetrates through the propeller 2 and is screw-connected to a nut 432.

Because screw 2 can produce wearing and tearing to nut 432, kuppe 12 in the rotatory in-process, consequently current propeller generally sets up parts such as bearing between screw 2 and nut 432, kuppe 12 in order to reduce the wearing and tearing to nut 432, kuppe 12 in the rotatory in-process of screw 2, because the propeller in this application needs to be operated in the underwater environment, consequently connecting parts such as bearing need carry out independent sealing operation, have increased the volume of propeller, are unfavorable for the miniaturized realization of propeller.

Thus, in some preferred embodiments of the present application, the propeller further comprises a positioning support ring 6, a stop ring 7, the positioning support ring 6, the stop ring 7 being made of a polymeric water lubricated bearing material; the positioning support ring 6 is sleeved outside the placement part 411 and is positioned between the propeller 2 and the limiting part 412 in the axial direction; the stop collar 7 is sleeved outside the boss 431 and is located between the propeller 2 and the nut 432 in the axial direction.

Further, the positioning support ring 6 is in positioning contact with the limiting portion 412 through a positioning pin, so as to achieve matching in the axial direction.

The positioning support ring 6 and the limiting ring 7 are made of polymer water lubrication bearing materials. On one hand, the material has excellent wear resistance and self-lubricating performance, so that the positioning support ring 6 and the limiting ring 7 can replace the traditional bearing and other structures, the structure and the size of the propeller are simplified, and the overall structure of the propeller is simpler and more compact; on the other hand, the material has good corrosion resistance, can resist chloride ion corrosion in seawater, so that the propeller still has good application prospect in marine environment, and the sealing structure is not required to be designed to independently protect the positioning support ring 6 and the limiting ring 7, thereby saving cost, reducing energy consumption and further reducing the volume of the propeller.

In actual production, because the size of the product often has errors, the connection between the propeller 2 and the sealing part is not completely matched, and a wave washer 8, a flat washer 9 and a spring washer 10 are sequentially arranged between the limiting ring 7 and the nut 432, so that the influence of the size in the working process of the propeller can be balanced.

While the foregoing is directed to embodiments of the present application, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. The utility model provides a magnetic coupling propeller, includes propeller housing (1), screw (2), motor (3), sealing and magnetic coupling portion (5), motor (3) install in the inside of sealing, sealing install in the inside of screw (2), screw (2) install in the inside of propeller housing (1), motor (3) pass through magnetic coupling portion (5) drive screw (2) are rotatory, its characterized in that:

the magnetic coupling part (5) comprises active magnetic steel (51) and passive magnetic steel (52), and the active magnetic steel (51) and the passive magnetic steel (52) are annular members which are arranged on the inner side and the outer side of the sealing part and are linked through magnetic coupling action;

the driving magnetic steel (51) is fixedly connected to the outer side wall of the rotor shell of the motor (3), and the driven magnetic steel (52) is fixedly connected to the inner side wall of the propeller (2).

2. A magnetically coupled impeller according to claim 1, wherein:

the driving magnetic steel (51) and the driven magnetic steel (52) comprise a plurality of fan-shaped magnetic steels, and the driving magnetic steel (51) and the driven magnetic steel (52) are in one-to-one correspondence.

3. A magnetically coupled impeller according to claim 1, wherein:

the propeller shell (1) comprises an outer cover (11) and a guide cover (12), and the outer cover (11) is detachably connected with the guide cover (12).

4. A magnetically coupled impeller according to claim 3, wherein:

the outer cover (11) comprises a cover shell (111) and an end cover (112), the cover shell (111) is of a cylindrical structure, one end of the cover shell (111) along the axial direction of the cover shell is fixedly connected with the end cover (112) through a connecting rod, and the other end of the cover shell is detachably connected with the air guide cover (12) through the connecting rod.

5. A magnetically coupled impeller according to claim 4, wherein:

the sealing part is arranged in the propeller (2) and partially extends out of the propeller (2) to be abutted with the propeller shell (1);

the outer diameter of the end cover (112) is the same as the outer diameter of the air guide sleeve (12).

6. A magnetically coupled impeller according to claim 5, wherein:

the sealing part comprises a sealing shell (41) and a sealing cover (42), the motor (3) is connected with the sealing shell (41) through a motor fixing piece (31), the motor fixing piece (31) and the sealing cover (42) are fixedly connected to two sides of the sealing shell (41) in the axial direction, the motor fixing piece (31) is positioned at one side close to the guide cover (12), and the sealing cover (42) is positioned at one side close to the end cover (112);

one end of the sealing shell (41) along the axial direction is connected with the guide cover (12), the other end of the sealing shell is connected with the sealing cover (42), and the sealing shell (41) is positioned between the driving magnetic steel (51) and the driven magnetic steel (52) in the radial direction;

the cavity between the motor (3) and the guide cover (12) is sealed.

7. A magnetically coupled impeller according to claim 6, wherein:

the sealing shell (41) comprises an insertion part (411) and a limiting part (412), wherein the outer diameter of the limiting part (412) is larger than that of the insertion part (411), the insertion part (411) is accommodated in the propeller (2), and the limiting part (412) extends out of the propeller (2) and is abutted to the guide cover (12).

8. A magnetically coupled impeller according to claim 7, wherein:

one end of the sealing cover (42) facing the end cover (112) is provided with a protruding part (431), and the protruding part (431) penetrates through the propeller (2) and is in spiral connection with a nut (432).

9. A magnetically coupled impeller according to claim 8, wherein:

the propeller further comprises a positioning support ring (6) and a limiting ring (7), wherein the positioning support ring (6) is sleeved outside the imbedding part (411) and is positioned between the propeller (2) and the limiting part (412) in the axial direction, and the limiting ring (7) is sleeved outside the protruding part (431) and is positioned between the propeller (2) and the nut (432) in the axial direction;

the positioning support ring (6) and the limiting ring (7) are made of high polymer water lubrication bearing materials.

10. A magnetically coupled impeller according to claim 9, wherein:

a wave washer (8), a flat washer (9) and a spring washer (10) are sequentially arranged between the limiting ring (7) and the nut (432).