CN216904589U

CN216904589U - Heat conduction type motor shaft

Info

Publication number: CN216904589U
Application number: CN202220115958.5U
Authority: CN
Inventors: 周绪强
Original assignee: Chongqing Zhendong Instrument Co ltd
Current assignee: Chongqing Zhendong Instrument Co ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2022-07-05
Anticipated expiration: 2032-01-17

Abstract

The utility model relates to the technical field of motor manufacturing, in particular to a heat conduction type motor shaft which comprises a shaft body, a mounting ring, a rotating ring, fan blades, a back plate, a dust screen and a flow guide cover, wherein the shaft body is rotatably connected with the output end of a motor and penetrates through a motor shell; the flow guide cover is detachably connected with the motor shell, and wraps the mounting ring and the back plate; the axis body is when rotating, and the rotatory air current that produces of a plurality of flabellums through the inside hot-air transmission of water conservancy diversion lid with motor housing to the external world, and external air passes through the inside that the axis body got into motor housing, forms air cycle, improves the radiating efficiency of motor, utilizes the air heat conduction to replace the coolant liquid heat dissipation, has saved the heat dissipation cost.

Description

Heat conduction type motor shaft

Technical Field

The utility model relates to the technical field of motor manufacturing, in particular to a heat-conducting motor shaft.

Background

With the development of permanent magnet materials and power electronic technology, the application of permanent magnet motors is wide. An inner rotor body of the existing high-power inner rotor permanent magnet motor cannot dissipate heat, so that the problems of demagnetization of a magnet in the rotor body of the permanent magnet motor, reduction of motor efficiency, shortened service life and the like are caused;

current motor shaft forms the structure of similar pump through setting up hollow structure and coolant liquid pumping mechanism, and when the motor shaft was rotatory, the coolant liquid can be inhaled in the hollow structure, then throws away through the coolant liquid way, realizes the cooling and the lubrication to motor casing inner assembly, improves the heat-sinking capability of motor

And the track that the coolant liquid was thrown away can't be controlled, and the coolant liquid gets into inside the motor casing after, is difficult for retrieving, causes the waste of coolant liquid.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a heat-conducting motor shaft, and aims to solve the technical problems that in the prior art, the throwing-out track of cooling liquid cannot be controlled, and the cooling liquid is not easy to recover after entering the interior of a motor shell, so that the waste of the cooling liquid is caused.

In order to achieve the purpose, the utility model provides a heat-conducting motor shaft which comprises a shaft body, a mounting ring, a rotating ring, fan blades, a back plate, a dust screen and a flow guide cover, wherein the shaft body is rotatably connected with the output end of a motor and penetrates through a motor shell, the rotating ring is fixedly connected with the shaft body and is positioned on the outer side wall of the shaft body, the mounting ring is detachably connected with the motor shell and is positioned on the outer side wall of the motor shell, the number of the fan blades is multiple, each fan blade is fixedly connected with the rotating ring and is uniformly arranged between the rotating ring and the mounting ring at intervals, and the back plate is fixedly connected with the rotating ring and is positioned on one side of the rotating ring, which is far away from the motor shell;

the motor is characterized in that a plurality of heat dissipation holes are uniformly formed in the outer side wall of the back plate at intervals, the dust screen is arranged inside each heat dissipation hole, the flow guide cover is detachably connected with the motor shell and wraps the mounting ring and the back plate, and the shaft body is rotatably connected with the back plate and the flow guide cover and sequentially penetrates through the back plate and the flow guide cover.

The shaft body is provided with a through hole inside, a plurality of air holes are formed in the two ends of the shaft body respectively, and each air hole is communicated with the through hole.

The heat-conducting motor shaft further comprises two rotating sealing rings, one of the rotating sealing rings is arranged between the back plate and the shaft body, and the other rotating sealing ring is arranged between the flow guide cover and the shaft body.

The mounting ring comprises a first ring body and a second ring body, a plurality of threaded holes are formed in the outer side wall of the first ring body, the first ring body is connected with the motor shell through the threaded holes in a screw mode and located on the outer side wall of the motor shell, and the second ring body is fixedly connected with the first ring body and located on one side, away from the motor shell, of the first ring body.

The mounting ring further comprises a vibration damping pad, and the vibration damping pad is arranged between the first ring body and the motor shell.

According to the heat-conducting motor shaft, when the shaft body rotates, the rotating ring is driven to rotate, the plurality of fan blades rotate to generate air flow, the air flow penetrates through the heat dissipation holes, hot air in the motor shell is transmitted to the outside through the flow guide cover, the outside air enters the motor shell through the shaft body to form air circulation, the heat dissipation efficiency of a motor is improved, the flow guide cover is arranged to prevent the hot air exhausted by the motor shell from entering the motor shell through the shaft body again, the dust screen is arranged to prevent dust from entering the motor shell, and through the structure, heat dissipation of cooling liquid is replaced by air heat conduction, and the heat dissipation cost is saved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a sectional view of a heat conductive motor shaft according to the present invention.

Fig. 2 is an enlarged view of a portion of the structure at a provided in the present invention.

Fig. 3 is a front view of a back plate provided by the present invention.

1-shaft body, 2-mounting ring, 3-rotating ring, 4-fan blade, 5-back plate, 6-dust screen, 7-diversion cover, 8-motor shell, 9-heat dissipation hole, 10-through hole, 11-air hole, 12-rotating sealing ring, 13-first ring body, 14-second ring body, 15-threaded hole and 16-vibration damping pad.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 3, the present invention provides a heat conduction type motor shaft, which includes a shaft body 1, a mounting ring 2, a rotating ring 3, a plurality of fan blades 4, a back plate 5, a dust screen 6 and a flow guiding cover 7, wherein the shaft body 1 is rotatably connected to an output end of a motor and penetrates through a motor housing 8, the rotating ring 3 is fixedly connected to the shaft body 1 and is located on an outer side wall of the shaft body 1, the mounting ring 2 is detachably connected to the motor housing 8 and is located on an outer side wall of the motor housing 8, the number of the fan blades 4 is plural, each fan blade 4 is fixedly connected to the rotating ring 3 and is uniformly arranged between the rotating ring 3 and the mounting ring 2 at intervals, and the back plate 5 is fixedly connected to the rotating ring 3 and is located on a side of the rotating ring 3 away from the motor housing 8;

the lateral wall interval of backplate 5 evenly is provided with a plurality of louvres 9, every louvre 9's inside all is provided with dust screen 6, water conservancy diversion lid 7 is connected with motor housing 8 dismantlement, and will collar 2 with backplate 5 parcel, axis body 1 respectively with backplate 5 with water conservancy diversion lid 7 rotates and is connected, and passes in proper order backplate 5 with water conservancy diversion lid 7.

In this embodiment, the axis body 1 drives when rotating the swivel becket 3 rotates, and is a plurality of the rotatory air current that produces of flabellum 4, the air current passes louvre 9, through diversion cover 7 transmits motor housing 8's inside hot-air to the external world, and external air passes through axis body 1 gets into motor housing 8's inside, forms air cycle, improves the radiating efficiency of motor, sets up diversion cover 7 prevents that motor housing 8 exhaust hot-air from passing through axis body 1 gets into motor housing 8's inside once more, sets up dust screen 6 prevents that the dust from getting into motor housing 8's inside, through above-mentioned structure, utilizes the air heat conduction to replace the coolant liquid heat dissipation, has saved the heat dissipation cost.

Further, a through hole 10 is formed in the shaft body 1, a plurality of air holes 11 are formed in two ends of the shaft body 1, and each air hole 11 is communicated with the through hole 10.

In the present embodiment, the outside air enters the through hole 10 through the air hole 11 on the outer side of the motor housing 8, and is discharged through the air hole 11 on the inner side of the motor housing 8, thereby reducing the temperature inside the motor.

Further, the heat conduction type motor shaft further comprises two rotating seal rings 12, wherein one of the rotating seal rings 12 is arranged between the back plate 5 and the shaft body 1, and the other rotating seal ring 12 is arranged between the diversion cover 7 and the shaft body 1.

In this embodiment, the rotary seal ring 12 is provided to ensure the sealing performance inside the deflector cap 7 when the shaft body 1 rotates.

Further, the mounting ring 2 includes a first ring body 13 and a second ring body 14, the outer side wall of the first ring body 13 is provided with a plurality of threaded holes 15, the first ring body 13 is in screw connection with the motor housing 8 through the threaded holes 15 and is located on the outer side wall of the motor housing 8, and the second ring body 14 is fixedly connected with the first ring body 13 and is located on one side of the first ring body 13 away from the motor housing 8; the mounting ring 2 further comprises a damping pad 16, and the damping pad 16 is arranged between the first ring body 13 and the motor housing 8.

In the embodiment, the first ring body 13 is mounted on the motor housing 8 by using screws, and a cavity formed by the second ring body 14 and the back plate 5 is communicated with the inside of the motor housing 8, so that the motor housing is convenient to detach and mount; by providing the vibration damping pad 16, local vibration is eliminated when the shaft body 1 rotates, thereby reducing operating noise.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A heat-conducting motor shaft is characterized in that,

the heat conduction type motor shaft comprises a shaft body, a mounting ring, a rotating ring, fan blades, a back plate, a dust screen and a flow guide cover, wherein the shaft body is rotatably connected with the output end of the motor and penetrates through the motor shell, the rotating ring is fixedly connected with the shaft body and is positioned on the outer side wall of the shaft body, the mounting ring is detachably connected with the motor shell and is positioned on the outer side wall of the motor shell, the number of the fan blades is multiple, each fan blade is fixedly connected with the rotating ring and is uniformly arranged between the rotating ring and the mounting ring at intervals, and the back plate is fixedly connected with the rotating ring and is positioned on one side of the rotating ring, which is far away from the motor shell;

2. A thermally conductive motor shaft as set forth in claim 1,

the inside of axis body is provided with the perforating hole, the both ends of axis body are provided with a plurality of gas pockets respectively, every the gas pocket all with the perforating hole intercommunication.

3. A thermally conductive motor shaft as set forth in claim 2,

4. A thermally conductive motor shaft as set forth in claim 3,

the mounting ring includes first ring body and second ring body, the lateral wall of first ring body is provided with a plurality of screw holes, first ring body passes through screw hole and motor housing screwed connection to be located motor housing's lateral wall, the second ring body with first ring body fixed connection, and be located motor housing's one side is kept away from to first ring body.

5. A thermally conductive motor shaft as set forth in claim 4,

the mounting ring still includes the damping pad, the damping pad set up in between first ring body and the motor housing.