CN218449696U

CN218449696U - Pod device and ship

Info

Publication number: CN218449696U
Application number: CN202222279641.8U
Authority: CN
Inventors: 皮志达; 舒永东; 杜鹏; 陈代明; 谢堂海; 曹世松; 张磊; 张道翔; 魏泽源; 柳德君
Original assignee: Nanjing High Accurate Marine Equipment Co Ltd
Current assignee: Nanjing High Accurate Marine Equipment Co Ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-02-03
Anticipated expiration: 2032-08-29

Abstract

The utility model belongs to the technical field of boats and ships, a nacelle device and a ship are disclosed, the nacelle device comprises a box body, a motor and a supporting mechanism, the box body can be installed on a ship body, the motor is installed in the box body, the motor is provided with a transmission shaft, the transmission shaft can drive a paddle to rotate, the supporting mechanism comprises an insulating installation component and a bearing, the insulating installation component is installed in the box body, the bearing is installed on the box body through the insulating installation component, and the transmission shaft is arranged on the bearing in a penetrating way; the vessel comprises the pod device described above. Wherein, bearing and box can be kept apart in insulation to insulating installation component to can reduce the electric current through the bearing, prevent that the bearing from taking place the galvanic corrosion, simple structure is convenient for maintain, has improved life, thereby has guaranteed the even running of boats and ships.

Description

Pod device and ship

Technical Field

The utility model relates to a boats and ships technical field especially relates to a nacelle device and boats and ships.

Background

At present, a pod type propeller is widely applied to the field of ships due to the advantages of high efficiency, low noise and low vibration. The pod type propeller arranges the motor outside the cabin, and then the motor directly drives the propeller to rotate so as to provide power for the ship.

On one hand, however, because the magnetic flux inside the motor is not uniformly distributed, the induced voltage generated along the shaft can generate a current loop which passes through the bearing, the bearing seat and the lower box body simultaneously; on the other hand, a common mode voltage caused by the frequency converter will also cause a voltage between the shaft and the bearing block, and the current will pass through each bearing in the same direction. Specifically, the bearing is subjected to current action in the operation process, and the current breaks through a lubricating oil film, so that metal is in direct contact with metal, local metal surface melting can be caused, and meanwhile, the performance of lubricating grease is reduced, and the bearing abrasion is accelerated.

In the prior art, the pod propeller usually adopts an insulated bearing to prevent the bearing from being corroded by shaft current, but the insulated bearing has high price and complex manufacture, and is difficult to maintain and replace in a later period.

In view of the above situation, it is desirable to design a pod device and a ship to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at: provided is a pod device which can reduce the current passing through a bearing, thereby preventing the bearing from generating electric corrosion, and which has a simple structure and is convenient to maintain.

The utility model discloses a another aim at: a vessel is provided comprising the pod device described above.

To achieve the purpose, the utility model adopts the following technical proposal:

a pod apparatus, comprising:

a tank body which can be mounted on a hull;

the motor is arranged in the box body and is provided with a transmission shaft, and the transmission shaft can drive an external paddle to rotate;

the supporting mechanism comprises an insulation mounting assembly and a bearing, the insulation mounting assembly is arranged between the box body and the bearing, the bearing is arranged in the box body through the insulation mounting assembly, the transmission shaft penetrates through the bearing, and the insulation mounting assembly can insulate and isolate the bearing and the box body.

As a preferable scheme, the insulation mounting assembly includes an insulation sleeve and an insulation gasket, the insulation sleeve is sleeved on the periphery of the bearing and clamped between the bearing and the box body along the radial direction of the transmission shaft, the insulation gasket is sleeved on the transmission shaft, and the bearing presses the insulation gasket against the box body along the axial direction of the transmission shaft.

As a preferred scheme, the box body comprises a box main body, an end cover and a bearing seat, the motor is installed in the box main body, the bearing seat is connected to the end of the box main body, the insulating sleeve and the bearing are installed in the bearing seat, the end cover is connected to the box main body and pushes the bearing against the bearing seat along the axial direction of the transmission shaft, and the insulating gasket is clamped between the bearing and the bearing seat and between the bearing and the end cover.

Preferably, the insulating sleeve is in interference fit with the bearing seat.

Preferably, the transmission shaft includes a paddle shaft and a thrust shaft, the paddle shaft is disposed at the front end of the motor and extends out of the bearing seat at the front end, and the thrust shaft is disposed at the rear end of the motor and is supported by the bearing in the bearing seat at the rear end.

As an optimal scheme, the bearing includes first spherical roller thrust bearing and second spherical roller thrust bearing, the rear end of case main part is provided with first installation department, first spherical roller thrust bearing with second spherical roller thrust bearing install respectively in case main part rear end the bearing frame with first installation department, the cover is equipped with the spacer ring on the thrust shaft, the both ends of spacer ring are followed respectively the axial butt of thrust shaft first spherical roller thrust bearing with second spherical roller thrust bearing.

As an optimal scheme, the case main part still is provided with the second installation department, the rear end the bearing frame connect in the terminal surface of second installation department, the bearing still includes spherical roller bearing, spherical roller bearing install in the second installation department, two the spacer ring is located respectively spherical roller bearing's both sides, one of them the both ends of spacer ring are followed respectively thrust shaft's axial butt first spherical roller thrust bearing with spherical roller bearing's one side, another thrust shaft's axial butt is followed respectively at the both ends of spacer ring second spherical roller thrust bearing with spherical roller bearing's opposite side.

As a preferable scheme, the box main body includes a sealing cover and a cylinder, the sealing cover and the cylinder are separately arranged, the sealing cover is connected to an end of the cylinder, the first mounting portion and the second mounting portion are both arranged on the sealing cover, and the motor is mounted in the cylinder.

Preferably, the motor further includes a rotating shaft, a rotor, and a stator, the rotating shaft is rotatably mounted in the box and connected to the transmission shaft, the rotor is fixed to a peripheral portion of the rotating shaft, and the stator is fixed to a side wall of the box and located on a peripheral side of the rotor.

In another aspect, a ship is further disclosed, and the ship comprises the pod device.

The utility model has the advantages that: the utility model provides a nacelle device and boats and ships, the bearing of nacelle device passes through insulating installation component to install in the box to can insulate isolation bearing and box, avoid induced-current to conduct between bearing and box, can prevent that the bearing from taking place the galvanic corrosion, simple structure, the maintenance of being convenient for has improved life, has guaranteed the even running of boats and ships.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

FIG. 1 is a schematic view of the structure of a pod apparatus;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partially enlarged view of the portion B shown in fig. 1.

In fig. 1 to 3:

1. a box body; 11. a box main body; 111. sealing the cover; 1111. a first mounting portion; 1112. a second mounting portion; 112. a cylinder body; 12. an end cap; 13. a bearing seat;

2. a motor; 21. a drive shaft; 211. a paddle shaft; 212. a thrust shaft; 22. a rotating shaft; 23. a rotor; 24. a stator;

3. a support mechanism; 31. an insulated mounting assembly; 311. an insulating sleeve; 312. an insulating spacer; 32. a bearing; 321. a first spherical roller thrust bearing; 322. a second spherical roller thrust bearing; 323. a spherical roller bearing; 324. a cylindrical roller bearing;

4. and a spacer ring.

Detailed Description

In order to make the technical problems, the adopted technical solutions and the achieved technical effects of the present invention clearer, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.

In the prior art, the pod propeller usually adopts an insulated bearing to prevent the bearing from being corroded by induced current generated by uneven magnetic flux distribution inside the motor and common mode voltage generated by a frequency converter, but the insulated bearing has high price, complicated manufacture and difficult later maintenance and replacement. In view of the above, the present embodiment provides a pod device having a simple structure and capable of reducing the current passing through the bearing 32, thereby preventing the bearing 32 from being electrically corroded.

As shown in fig. 1-3, the present embodiment provides a pod device, which includes a box 1, a motor 2, and a support mechanism 3, where the box 1 can be installed on a hull of a ship, the motor 2 is installed in the box 1, and the motor 2 is provided with a transmission shaft 21, the transmission shaft 21 can be in transmission connection with an external blade to drive the blade to rotate, the support mechanism 3 includes an insulating installation component 31 and a bearing 32, the insulating installation component 31 is located between the box 1 and the bearing 32, the bearing 32 is installed in the box 1 through the insulating installation component 31, and the transmission shaft 21 is inserted into the bearing 32, so that the bearing 32 can rotatably support the transmission shaft 21. It can be understood that the insulative mounting assembly 31 can insulate and isolate the bearing 32 from the housing 1, and has a simple structure, so that it can reduce the induced current generated by the uneven distribution of the magnetic flux inside the motor 2 and the current of the common mode voltage generated by the inverter from passing through the bearing 32, thereby preventing the bearing 32 from being electrically corroded, and prolonging the service life of the pod device.

Specifically, the insulation mounting assembly 31 includes an insulation sleeve 311 and an insulation gasket 312, the insulation sleeve 311 is sleeved on a peripheral portion of the bearing 32, the insulation sleeve 311 is made of an insulation material such as plastic or rubber, the bearing 32 is sleeved on the transmission shaft 21, an outer ring of the insulation sleeve 311 abuts against an inner ring of the insulation sleeve 311, an outer ring of the insulation sleeve 311 abuts against the box 1, so that the insulation sleeve 311 is clamped between the bearing 32 and the box 1 along a radial direction of the transmission shaft 21 to achieve radial insulation and radial positioning, the insulation gasket 312 is made of an insulation material such as plastic or rubber, the insulation gasket 312 is sleeved on the transmission shaft 21, one side of the insulation gasket 312 abuts against an outer ring of the bearing 32, and the other side of the insulation gasket 312 abuts against the box 1, so that the bearing 32 abuts against the insulation gasket 312 against the box 1 along an axial direction of the transmission shaft 21 to achieve axial insulation and axial positioning. Under the cooperation of the insulating sleeve 311 and the insulating gasket 312, the bearing 32 can be insulated and isolated from the box body 1 in the radial direction and the axial direction of the transmission shaft 21, and the structure is simple.

In this embodiment, the box body 1 includes a box main body 11, an end cover 12 and a bearing seat 13, which are separately arranged, the motor 2 is installed in the box main body 11, the bearing seat 13 is connected to an end portion of the box main body 11, the insulating sleeve 311 is sleeved on an outer ring of the bearing 32 and is installed in the bearing seat 13 along a radial direction, the end cover 12 is connected to the box main body 11 and presses the bearing 32 against the bearing seat 13 along an axial direction of the transmission shaft 21, so as to realize positioning of the bearing 32 in the axial direction and the radial direction, and in addition, insulating gaskets 312 are respectively arranged between the bearing 32 and the bearing seat 13 and between the bearing 32 and the end cover 12, which is convenient for assembly. In other embodiments of the present invention, the bearing housing 13 and the end cap 12 may also be made of an insulating material, so as to insulate and isolate the bearing 32 from the box main body 11.

As a preferred embodiment, the insulating sleeve 311 is in interference fit with the bearing housing 13, so as to position the bearing 32 more firmly.

As shown in fig. 1 and fig. 2, in the present embodiment, the transmission shaft 21 includes a paddle shaft 211 at the front end of the motor 2 and a thrust shaft 212 at the rear end of the motor 2, the paddle shaft 211 extends out of the bearing seat 13 at the front end of the box main body 11 and can be connected with an external paddle, the thrust shaft 212 is supported by the bearing 32 in the bearing seat 13 at the rear end, and the thrust shaft 212 indirectly abuts against the bearing seat 13 at the rear end, so that the radial force balance along the transmission shaft 21 is realized, and the operation is more stable.

Specifically, the motor 2 further includes a rotating shaft 22, a stator 24, and a rotor 23, a rear end of the rotating shaft 22 is connected to the thrust shaft 212, a front end of the rotating shaft 22 is connected to the paddle shaft 211, the rotor 23 is fixedly sleeved on a peripheral portion of the rotating shaft 22, and the stator 24 is fixed to a side wall of the box 1 and located on a peripheral side of the rotor 23. When the stator 24 is energized, the rotor 23 can rotate with the rotating shaft 22 under the action of electromagnetic induction, thereby driving the paddle shaft 211 and the paddles to rotate.

As shown in fig. 2, the bearing 32 includes a first spherical roller thrust bearing 321 and a second spherical roller thrust bearing 212, a first installation portion 1111 is disposed at the rear end of the box body 1, the first spherical roller thrust bearing 321 and the second spherical roller thrust bearing 322 are respectively installed on a bearing seat 13 and a first installation portion 1111 at the rear end of the box body 11, the first spherical roller thrust bearing 321 and the second spherical roller thrust bearing 322 are both sleeved on the thrust bearing 212, the thrust bearing 212 is further sleeved with a spacer ring 4, the spacer ring 4 is located between the first spherical roller thrust bearing 321 and the second spherical roller thrust bearing 322, two ends of the spacer ring 4 are respectively abutted against the first spherical roller thrust bearing 321 and the second spherical roller thrust bearing 322 along the axial direction of the thrust bearing 212, the thrust bearing 212 is sleeved with an end cover 12, the end cover 12 is connected to the first installation portion 1111 and is abutted against the second spherical roller thrust bearing 322 along the direction close to the first spherical roller thrust bearing 321, so as to achieve axial positioning of the first spherical roller thrust bearing 321 and the second spherical roller thrust bearing 322, the first spherical roller thrust bearing 321 and the second spherical roller thrust bearing seat 322 are respectively sleeved with two insulating spherical roller thrust bearing housings 13, and the insulating spherical roller thrust bearing housings 11; the first spherical roller thrust bearing 321 and the second spherical roller thrust bearing 322 are both provided with an insulating spacer 312 along the axial direction of the thrust shaft 212, one spacer is pressed against the side wall of the bearing seat 13 by the first spherical roller thrust bearing 321, and the other spacer is pressed against the side wall of the end cover 12 by the second spherical roller thrust bearing 322. The first spherical roller thrust bearing 321 and the second spherical roller thrust bearing 322 are provided to more reliably support the thrust shaft 212 in the axial direction.

Specifically, the box main body 11 is further provided with a second installation portion 1112 in a hole shape, the second installation portion 1112 is located between the bearing seat 13 and the first installation portion 1111, the bearing seat 13 at the rear end is connected to the end surface of the second installation seat, the bearing 32 further includes a spherical roller bearing 323, the spherical roller bearing 323 is installed in the second installation portion 1112, an insulating sleeve 311 is sleeved on the spherical roller bearing 323, an outer ring of the insulating sleeve 311 is in interference fit with the second installation portion 1112, two spacer rings 4 are provided, the two spacer rings 4 are respectively located at two sides of the spherical roller bearing 323, two ends of one spacer ring 4 are respectively abutted to one side of the first spherical roller thrust bearing 321 and the spherical roller bearing 323 along the axial direction of the thrust shaft 212, and two ends of the other spacer ring 4 are respectively abutted to the other side of the second spherical roller thrust bearing 322 and the spherical roller bearing 323 along the axial direction of the thrust shaft 212, so as to realize the axial positioning of the first spherical roller thrust bearing 321, the second spherical roller thrust bearing 322 and the spherical roller bearing 323. The spherical roller bearing 323 is provided to more reliably support the thrust shaft 212 in the radial direction while ensuring that the first spherical roller thrust bearing 321 and the second spherical roller thrust bearing 322 support the thrust shaft 212 in the axial direction.

As shown in fig. 3, the bearing 32 further includes a cylindrical roller bearing 324, the cylindrical roller bearing 324 is sleeved on the paddle shaft 211, the front end of the box main body 11 is connected with the bearing seat 13, the cylindrical roller bearing 324 is located in the bearing seat 13, the box main body 11 is further provided with an end cover 12, the end cover 12 limits the cylindrical roller bearing 324 in the bearing seat 13 along the axial direction of the paddle shaft 211, the cylindrical roller bearing 324 is sleeved with an insulating sleeve 311, an outer ring of the insulating sleeve 311 is in interference fit with the box main body 11, the cylindrical roller bearing 324 is provided with insulating spacers 312 along two sides of the paddle shaft 211, and the two insulating spacers 312 are respectively clamped between the end cover 12 and the cylindrical roller bearing 324 and between the bearing seat 13 and the cylindrical roller bearing 324. The cylindrical roller bearing 324 is provided to support the paddle shaft 211 in the radial direction of the paddle shaft 211.

As shown in fig. 1, the box main body 11 includes a cover 111 and a cylinder 112 which are separately provided, a first mounting portion 1111 and a second mounting portion 1112 are both provided in the cover 111, the motor 2 is mounted in the cylinder 112, and the end caps 12 of the thrust shaft 212 and the paddle shaft 211 are both located in the cylinder 112, and the cover 111 is connected to an end of the cylinder 112 to close an opening of the cylinder 112. It will be appreciated that the separate cover 111 and barrel 112 further facilitate the disassembly and assembly of the pod device.

The embodiment also provides a ship, which comprises a ship body, blades and the pod device, wherein the pod device is arranged on the ship body, the blades are connected to the transmission shaft 21 of the pod device, the insulating mounting assembly 31 can insulate and isolate the bearing 32 of the pod device from the box body 1, so that induced current generated by uneven magnetic flux distribution inside the motor 2 and current of common-mode voltage generated by a frequency converter can be reduced to pass through the bearing 32, electric corrosion of the bearing 32 is prevented, the service life of the pod device is prolonged, and stable running of the ship can be ensured.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship based on what is shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A pod apparatus, comprising:

a box body (1) which can be mounted on a ship body;

the motor (2) is arranged in the box body (1), the motor (2) is provided with a transmission shaft (21), and the transmission shaft (21) can drive an external paddle to rotate;

supporting mechanism (3), including insulating installation component (31) and bearing (32), insulating installation component (31) set up in box (1) with between bearing (32), bearing (32) pass through insulating installation component (31) install in box (1), transmission shaft (21) wear to locate bearing (32), insulating installation component (31) can insulate isolation bearing (32) with box (1).

2. The pod device according to claim 1, wherein the insulation mounting assembly (31) comprises an insulation sleeve (311) and an insulation washer (312), the insulation sleeve (311) is sleeved on the periphery of the bearing (32) and clamped between the bearing (32) and the box body (1) along the radial direction of the transmission shaft (21), the insulation washer (312) is sleeved on the transmission shaft (21), and the bearing (32) presses the insulation washer (312) against the box body (1) along the axial direction of the transmission shaft (21).

3. The pod device according to claim 2, wherein the case (1) includes a case main body (11), an end cover (12), and a bearing housing (13), the motor (2) is mounted in the case main body (11), the bearing housing (13) is connected to an end of the case main body (11), the insulating sleeve (311) and the bearing (32) are both mounted in the bearing housing (13), the end cover (12) is connected to the case main body (11) and presses the bearing (32) against the bearing housing (13) in an axial direction of the drive shaft (21), and the insulating gasket (312) is clamped between the bearing (32) and the bearing housing (13) and between the bearing (32) and the end cover (12).

4. A pod device according to claim 3, characterized in that the insulating sleeve (311) is interference fitted with the bearing seat (13).

5. A pod device according to claim 3, characterized in that the drive shaft (21) comprises a paddle shaft (211) and a thrust shaft (212), the paddle shaft (211) being arranged at the front end of the motor (2) and extending out of the bearing seat (13) at the front end, the thrust shaft (212) being arranged at the rear end of the motor (2) and being supported in the bearing (32) in the bearing seat (13) at the rear end.

6. The pod device according to claim 5, wherein the bearing (32) comprises a first spherical roller thrust bearing (321) and a second spherical roller thrust bearing (322), the rear end of the box body (11) is provided with a first mounting portion (1111), the first spherical roller thrust bearing (321) and the second spherical roller thrust bearing (322) are respectively mounted to the bearing seat (13) and the first mounting portion (1111) at the rear end of the box body (11), a spacer ring (4) is sleeved on the thrust shaft (212), and both ends of the spacer ring (4) abut against the first spherical roller thrust bearing (321) and the second spherical roller thrust bearing (322) respectively along the axial direction of the thrust shaft (212).

7. The nacelle device according to claim 6, wherein the box body (11) is further provided with a second mounting portion (1112), the bearing seat (13) at the rear end is connected to an end surface of the second mounting portion (1112), the bearing (32) further includes a spherical roller bearing (323), the spherical roller bearing (323) is mounted to the second mounting portion (1112), the two spacer rings (4) are respectively located at both sides of the spherical roller bearing (323), both ends of one of the spacer rings (4) respectively abut against one side of the first spherical roller thrust bearing (321) and the spherical roller bearing (323) in the axial direction of the thrust shaft (212), and both ends of the other spacer ring (4) respectively abut against the other side of the second spherical roller thrust bearing (322) and the spherical roller bearing (323) in the axial direction of the thrust shaft (212).

8. The pod apparatus according to claim 7, wherein the box body (11) includes a cover (111) and a barrel (112), the cover (111) is provided separately from the barrel (112) and the cover (111) is connected to an end of the barrel (112), the first mounting portion (1111) and the second mounting portion (1112) are both provided to the cover (111), and the motor (2) is mounted in the barrel (112).

9. The pod device according to claim 1, wherein the motor (2) further comprises a rotating shaft (22), a rotor (23), and a stator (24), wherein the rotating shaft (22) is rotatably mounted to the housing (1) and connected to the transmission shaft (21), the rotor (23) is fixed to a peripheral portion of the rotating shaft (22), and the stator (24) is fixed to a side wall of the housing (1) and located on a peripheral side of the rotor (23).

10. A ship, characterized by comprising a pod device according to any one of claims 1-9.