CN210724449U

CN210724449U - Thrust block, motor and underwater booster

Info

Publication number: CN210724449U
Application number: CN201921718592.5U
Authority: CN
Inventors: 魏建仓; 杨险峰; 李岱宗
Original assignee: Tianjin Deepfar Ocean Technology Co ltd
Current assignee: Tianjin Shenzhilan Marine Equipment Technology Co ltd; Deepinfar Ocean Technology Inc
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-06-09
Anticipated expiration: 2029-10-14
Also published as: WO2021073344A1

Abstract

The disclosure provides a thrust block, a motor and an underwater booster. A first through hole is formed in the center of the thrust block along the axial direction, and a water tank is arranged on one end face of the thrust block; one end of the water tank extends to the side wall of the thrust block. This thrust block of this disclosure, through the effect of basin, forms the water film during rotatory, reduce wearing and tearing improve the life-span.

Description

Thrust block, motor and underwater booster

Technical Field

The utility model belongs to the underwater equipment field especially relates to a thrust block, motor and booster under water.

Background

The brushless DC motor is one of permanent magnet synchronous motors, and adopts an electronic commutator instead of a mechanical brush, so that the brushless DC motor has a simple structure and reliable operation. In a general brushless direct current motor, a deep groove ball bearing supporting a rotating shaft has poor axial load bearing capacity, and the service life of the motor is influenced. When the thrust block is used for bearing the axial load of the rotating shaft, the thrust block and parts in contact with the thrust block are abraded greatly, and the service life of the motor is influenced.

Disclosure of Invention

The thrust block, the motor and the underwater booster are provided, and when the thrust block rotates, abrasion is reduced through a generated water film, and the service life is prolonged.

One embodiment of the present disclosure provides a thrust block, installed in a motor, for transmitting an axial load of a rotating shaft, where a first through hole is axially formed in a center of the thrust block, and a water tank is formed on one end surface of the thrust block; one end of the water tank extends to the side wall of the thrust block.

According to some embodiments of the present disclosure, the number of the water tanks is plural.

According to some embodiments of the disclosure, the plurality of water troughs are circumferentially equispaced.

According to some embodiments of the disclosure, the water channel extends from the first through hole to a side wall of the thrust block.

According to some embodiments of the disclosure, the water channel extends in a radial direction of the thrust block.

According to some embodiments of the disclosure, the water tank includes a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface respectively extend from the bottom end of the water tank to an end surface where the water tank is located.

According to some embodiments of the disclosure, the side wall of the thrust block is cylindrical.

An embodiment of the present disclosure also provides a motor including: the stator comprises a shaft hole which is through along the axial direction, and a coil is wound on the outer wall of the stator; the rotor comprises a first cavity, the front end of the first cavity is provided with an opening, the end surface of the tail end of the first cavity is provided with a rotating shaft mounting hole, and the stator is arranged in the first cavity; the magnet is arranged on the inner wall of the first cavity and is opposite to the coil; the bearing is arranged in the shaft hole; the tail end of the rotating shaft is arranged in the rotating shaft mounting hole, the front end of the rotating shaft penetrates through the bearing and extends out of the shaft hole, and the rotor drives the rotating shaft to rotate; the fixing block is arranged in the shaft hole and comprises a second through hole, and the rotating shaft penetrates through the second through hole; the thrust block is sleeved on the rotating shaft, and the thrust block transmits the axial load of the rotating shaft to the fixed block.

According to some embodiments of the disclosure, the rotor is provided with a water inlet hole for water to flow into the first cavity.

An embodiment of the present disclosure also provides an underwater booster, including: a housing; the motor is connected with the shell; the propeller is connected with the rotating shaft of the motor.

The thrust block disclosed by the disclosure has the advantages that a layer of water film is formed between the thrust block and the adjacent part under the action of the water tank during rotation, the lubricating effect is achieved, the abrasion of the motor is reduced, and the power consumption is reduced.

Drawings

FIG. 1 is a front view of a thrust block of an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a thrust block of an embodiment of the present disclosure;

FIG. 3 is a top view of a thrust block of an embodiment of the present disclosure;

FIG. 4 is a schematic view of an electric machine according to an embodiment of the present disclosure;

fig. 5 is a cross-sectional view of an electric machine according to an embodiment of the present disclosure;

FIG. 6 is an exploded view of a motor according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of a stator frame according to an embodiment of the disclosure;

FIG. 8 is a cross-sectional view of a stator frame according to an embodiment of the present disclosure;

fig. 9 is a cross-sectional view of a stator core of an embodiment of the present disclosure.

FIG. 10 is a schematic view of a magnetically permeable ring according to an embodiment of the disclosure;

FIG. 11 is a schematic view of a magnetically permeable ring support according to an embodiment of the disclosure;

FIG. 12 is a schematic view of a shaft according to an embodiment of the disclosure;

FIG. 13 is a schematic view of a mounting block according to an embodiment of the disclosure;

FIG. 14 is a schematic view of a subsea booster according to an embodiment of the present disclosure;

FIG. 15 is a schematic view of a propeller of a subsea booster according to an embodiment of the disclosure;

FIG. 16 is an exploded view of a thruster of an embodiment of the present disclosure;

FIG. 17 is a schematic illustration of an impeller housing of an embodiment of the present disclosure;

figure 18 is a cross-sectional view of an impeller housing of an embodiment of the present disclosure.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art can appreciate, the described embodiments can be modified in various different ways, without departing from the spirit or scope of the present disclosure. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present disclosure, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "straight", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present disclosure. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.

Throughout the description of the present disclosure, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection, either mechanically, electrically, or otherwise in communication with one another; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. 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 above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the disclosure. To simplify the disclosure of the present disclosure, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present disclosure. Moreover, the present disclosure may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The preferred embodiments of the present disclosure will be described below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustrating and explaining the present disclosure and are not intended to limit the present disclosure.

Example 1

As shown in FIGS. 1-3, embodiments of the present disclosure provide a thrust block 100. The thrust block 100 is installed in the motor, connected to the rotating shaft, and can transmit the axial load of the rotating shaft. The thrust block 100 is provided at the center thereof with a first through hole 110 in the axial direction. The thrust block 100 can be sleeved on the rotating shaft through the first through hole and is fixedly connected with the rotating shaft.

The thrust block 100 has a water channel 120 on one end surface 140. One end (first end 121) of the water channel 120 extends to the side wall 130 of the thrust block. When the motor is positioned in the water, the water flows into the water tank 120 through the first end 121. When the shaft drives the thrust block 100 to rotate, the water tank 120 pushes water to form a water film between the thrust block 100 and the adjacent component of the thrust block 100. The water film can effectively reduce the wearing and tearing of thrust piece 100 and adjacent part, reduces the consumption of motor simultaneously.

According to an alternative aspect of the present disclosure, the number of the water tanks 120 is plural. In this embodiment, the number of the water tanks 120 is three, and other numbers of the water tanks 120 may be used as needed. Optionally, a plurality of water slots 120 are circumferentially equispaced.

According to an alternative aspect of the present disclosure, the water groove 120 extends from the first through hole 110 to the sidewall 130 of the thrust block. That is, the second end 122 of the water tank 120 extends to the first through hole 110, and the first end 121 extends to the sidewall 130 of the thrust block. The water channel 120 extends from the first through hole 110 to the sidewall 130 of the thrust block to facilitate the formation of a water film.

Optionally, the water channel 120 extends in a radial direction of the pad 100. The water channel 120 extending in the radial direction of the thrust block 100 facilitates improving the uniformity of the water film.

As shown in fig. 3, according to an alternative aspect of the present disclosure, the water tank 120 includes a first slope 123 and a second slope 124. The intersection of the first slope 123 and the second slope 124 forms the lowermost end of the water tank 120. The first inclined plane 123 and the second inclined plane 124 extend from the bottom end of the water tank 120 to the end surface 140 where the water tank is located. Optionally, an included angle between the first inclined surface 123 and the second inclined surface 124 is an obtuse angle, and a length of the first inclined surface 123 is greater than a length of the second inclined surface 124.

According to an optional technical scheme of the present disclosure, the side wall 130 of the thrust block 100 is a cylindrical surface, which facilitates the machining and manufacturing of the thrust block 100. As the pad 100 rotates, the water presents minimal resistance to the cylindrical pad 100.

Example 2

As shown in fig. 4 to 6, an embodiment of the present disclosure further provides a motor, where the motor is a brushless dc motor. The motor includes a stator 200, a rotor 300, a magnet 400, a bearing 500, a rotation shaft 600, a fixing block 700, and the thrust block 100 as described above.

The stator 200 includes a shaft hole 211 penetrating in the axial direction, and the shaft hole 211 is used for mounting the rotating shaft 600. The stator 200 has coils (not shown) wound around its outer wall, and the coils are arranged according to the coils of the brushless dc motor.

As shown in fig. 7 to 9, the stator 200 may optionally include a stator bracket 210 and a stator core 220. The through-hole 211 is located in the stator holder 210. Stator core 220 includes third through-hole 222, and stator support 210 penetrates third through-hole 222, and stator core 220 cover is established on stator support 210, and stator support 210 and stator core 220 interference fit realize stator support 210 and stator core 220's fixed connection. The coil is wound on the outer wall 221 of the stator core 220. Both the stator frame 210 and the stator core 220 may be made of silicon steel.

The rotor 300 includes a first cavity, and a front end (right end in the drawing) of the first cavity is open. The stator 1 is disposed in the first cavity. A rotating shaft mounting hole 321 is arranged on the end surface of the tail end (left end in the figure) of the first cavity.

As shown in fig. 10 and 11, optionally, the rotor 300 includes a magnetic ring 310 and a magnetic ring support 320. The magnetic conductive ring 310 is annular, and a through cavity 311 is arranged inside the magnetic conductive ring. The sidewall 322 of the magnetic ring support 320 is inserted into the cavity 311 of the magnetic ring 310, and the magnetic ring 310 and the magnetic ring support 320 are in interference fit, so that the magnetic ring 310 and the magnetic ring support 320 are fixedly connected. The magnetic ring support 320 closes the rear end (left end in the figure) of the magnetic ring 310 to form a first cavity. The magnetic ring 310 and the magnetic ring support 320 may be made of stainless steel.

The rotating shaft mounting hole 321 is located at the center of the magnetic conductive ring support 320. The center of the end surface of the magnetic conductive ring support 320 extends outward in the axial direction to increase the depth of the rotating shaft mounting hole 321.

The plurality of magnets 400 are circumferentially and uniformly distributed on the inner wall of the magnetic conductive ring 310. The magnet 400 is a permanent magnet and is positioned opposite to the coil on the stator 200. When the coil is energized, the magnet 400 is acted on by magnetic force to drive the rotor 300 to rotate.

The bearing 500 is disposed in the shaft hole 211. In this embodiment, the bearing 500 includes a first bearing 510 and a second bearing 520, and the first bearing 510 and the second bearing 520 are both deep groove ball bearings with flanges. First bearing 510 is mounted to the rear end of shaft bore 211 and second bearing 520 is mounted to the front end of shaft bore 211. The diameters of the front and rear ends of the shaft hole 211 are increased to facilitate the installation of the first and

second bearings

510 and 520.

As shown in fig. 12, the shaft 600 has a substantially cylindrical shape, and the rear end 610 of the shaft 600 is fitted into the shaft fitting hole 321. The rotating shaft 600 is in interference fit with the rotating shaft mounting hole 321, so that the rotating shaft 600 is fixedly connected with the rotor 300. The front end 620 of the rotating shaft 600 extends out of the shaft hole 211 through the bearing 500. The bearing 500 functions to support the rotation shaft 600. After the coil is energized, the rotor 300 rotates to drive the rotating shaft 600 to rotate.

As shown in fig. 13, the fixing block 700 has a cylindrical shape including a second through hole 710 at the center. The fixing block 700 is disposed in the shaft hole 211, is mounted at the tail end 212 of the shaft hole, is located at the left side of the first bearing 510, and is closely attached to the first bearing 510. The rotation shaft 60 passes through the second through hole 710 without contacting the second through hole 710.

The fixing block 700 is made of a composite material of polytetrafluoroethylene and carbon fibers, and has the characteristics of high temperature resistance, corrosion resistance, wear resistance, dust resistance, self-lubrication and the like.

The rotating shaft 600 passes through the first through hole 110 of the thrust block 100 and is connected with the thrust block 100. The thrust block 100 is sleeved on the tail end of the rotating shaft 600. When installed, the thrust block 100 is located on the rear end side (left side in the drawing) of the fixed block 700. When the rotating shaft 600 is subjected to a rightward axial load, the axial load is transmitted to the thrust block 100, and the thrust block 100 transmits the axial load of the rotating shaft 600 to the fixed block 700.

When the rotating shaft 600 rotates, the thrust block 100 is driven to rotate along with the water tank 120, and a layer of water film is formed between the thrust block 100 and the fixing block 700 to play a role in lubricating, reduce abrasion and reduce power consumption.

Optionally, the magnetic conductive ring support 320 of the rotor is provided with a plurality of water inlet holes 323, which facilitate water to flow into the first cavity.

The front end of the stator bracket 210 extends in the radial direction out of the connection block 213. The connecting block 213 is provided with a plurality of connecting holes 214. The motor is fixed through the connection hole 214, which facilitates the installation of the motor.

Example 3

As shown in fig. 14, an embodiment of the present disclosure also provides a subsea booster comprising a housing 800, a motor and a propeller 900 as described above. The motor and the propeller 900 are arranged in the shell 800, and the motor drives the propeller 900 to rotate, so that the underwater booster can be powered in water.

As shown in fig. 15 and 16, the pusher portion of the housing 800 includes a pusher housing 810, a front end cap 820, and a rear end cap 830. The propeller shell 810 is a through cavity inside, the front end cover 820 is arranged at the front end of the propeller shell 810, and the tail end cover 830 is arranged at the tail end of the propeller shell 810. The propeller housing 810, front end cap 820, rear end cap 830, motor and propeller 900 form a propeller.

As shown in fig. 17 and 18, a sleeve 811 is provided in the propeller housing 810, and the sleeve 811 is fixedly connected to the inner wall of the propeller housing 810 by a connecting member 812. The sleeve 811 includes a third cavity 813 with an open end, and the motor is located in the third cavity 813. In this embodiment, the connecting block 213 of the stator holder is tightly attached to the end face of the front end of the sleeve 811, and the bolt passes through the end face of the front end of the sleeve 811 and is connected to the connecting hole 214, thereby fixing the motor. The front end 620 of the rotary shaft 600 extends out of the sleeve 811 and is connected to the propeller 900.

The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of protection of the present disclosure.

Finally, it should be noted that: although the present disclosure has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the disclosure. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A thrust block is installed in a motor and used for transmitting axial load of a rotating shaft, and is characterized in that a first through hole is formed in the center of the thrust block along the axial direction, and a water tank is arranged on one end face of the thrust block; one end of the water tank extends to the side wall of the thrust block.

2. The pad of claim 1, wherein the number of water channels is multiple.

3. The thrust block of claim 2, wherein said plurality of water channels are circumferentially equispaced.

4. The pad of claim 1, wherein the water channel extends from the first through hole to a sidewall of the pad.

5. The pad of claim 1, wherein the water channel extends in a radial direction of the pad.

6. The pad of claim 1, wherein the channel comprises a first sloped surface and a second sloped surface, the first sloped surface and the second sloped surface each extending from a bottom end of the channel to an end surface on which the channel is located.

7. The pad of claim 1, wherein the sidewall of the pad is cylindrical.

8. An electric machine, comprising:

the stator comprises a shaft hole which is through along the axial direction, and a coil is wound on the outer wall of the stator;

the rotor comprises a first cavity, the front end of the first cavity is provided with an opening, the end surface of the tail end of the first cavity is provided with a rotating shaft mounting hole, and the stator is arranged in the first cavity;

the magnet is arranged on the inner wall of the first cavity and is opposite to the coil;

the bearing is arranged in the shaft hole;

the tail end of the rotating shaft is arranged in the rotating shaft mounting hole, the front end of the rotating shaft penetrates through the bearing and extends out of the shaft hole, and the rotor drives the rotating shaft to rotate;

the fixing block is arranged in the shaft hole and comprises a second through hole, and the rotating shaft penetrates through the second through hole;

the thrust block of any one of claims 1 to 7, wherein the thrust block is sleeved on the rotating shaft, and the thrust block transmits the axial load of the rotating shaft to the fixed block.

9. The electric motor of claim 8, wherein the rotor has an inlet opening for water to flow into the first cavity.

10. An underwater booster, comprising:

a housing;

the electric machine of any one of claims 8 or 9, said electric machine being connected to said housing;

the propeller is connected with the rotating shaft of the motor.