CN217590440U

CN217590440U - Assembly structure of high-speed motor

Info

Publication number: CN217590440U
Application number: CN202221733782.6U
Authority: CN
Inventors: 秦晓春
Original assignee: Jiangsu Changjin Intelligent Electric Appliance Co ltd
Current assignee: Jiangsu Changjin Intelligent Electric Appliance Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-10-14
Anticipated expiration: 2032-07-06

Abstract

The utility model belongs to the technical field of the motor technology and specifically relates to an assembly structure of high-speed motor, satisfy high-power complicated load high-speed motor's high rigidity high accuracy structure requirement, the stator has, front end housing and rear end cap are connected by the at least three first hookup bolt that the circumference distributes, be equipped with the first hookup ear that the circumference distributes on the periphery wall that front end housing and rear end cap were far away from respectively, first hookup ear on the front end housing and the first hookup ear one-to-one on the rear end cap, be equipped with the bolt hole on the first hookup ear, the first hookup ear that every group corresponds is by a first hookup bolt fixed connection, be equipped with the U-shaped cell body of the first hookup bolt of embedding and centre gripping on the periphery wall of front end housing and rear end cap, be equipped with the second hookup ear that the circumference distributes on the periphery wall of front end housing and rear end cap looks near, the second hookup ear is by second hookup bolt fixed connection, the motor has the shell, the preceding of shell, the rear end face is with preceding, the rear end face, the interior terminal surface of rear end cap ends the mouth formula cooperation.

Description

Assembling structure of high-speed motor

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to an assembly structure of high-speed motor.

Background

The motor generally consists of a stator, a rotor and an end cover, but shows various assembly structures, namely an outer rotor type, an inner rotor type, a shell-free type and the like.

The high-speed motor generally refers to a motor with the rotating speed of more than 10000r/min, and has the advantages that: firstly, the motor has high power density, small volume and material saving; secondly, the noise is low; thirdly, the high-speed motor has small rotational inertia and fast dynamic response; thirdly, the high-speed motor stator and rotor rotate fast relatively, the back electromotive force that produces is high, and the restriction to operating current in the winding, the consumed current is little, and is more power-conserving, but high-speed motor just because the reason of the rotational speed is high, and the precision and the rigidity of motor require higher, and the power of general high-speed motor all is in the scope of several hundred watts, even be higher than 1 KW's high-power high-speed motor, its output shaft is not suitable for installing the belt pulley and makes the rotor bear the pulling force of belt yet.

In order to improve the structural rigidity of the high-speed motor, the front end cover and the rear end cover are generally not fixed on the shell respectively like a common motor, but are directly connected with the front end cover and the rear end cover by four longer connecting bolts, and the front end cover and the rear end cover can be directly pressed on the stator core, so that the shells of some high-speed motors can be omitted, and if the shells exist, the high-speed motor only plays a role in wrapping, and the motor mainly has defects in several aspects: 1. gaps exist between the bolt holes on the front end cover and the rear end cover and the connecting bolts, and when the rotor rotates at a high speed, the front end cover and the rear end cover can generate relative twisting and swinging, so that the supporting rigidity of the front end cover and the rear end cover to the rotor is influenced; 2. the length of the connecting bolt is long, the deformation amount is large when the connecting bolt expands with heat and contracts with cold, and the fixing precision of the front end cover and the rear end cover is influenced; 3. the stator of motor is formed by the lamination of iron core, the front end housing and the rear end cap of motor press the both ends at the stator, there is the tolerance in the raw and other materials panel thickness of iron core lamination, highly can have uncontrollable deviation after a plurality of iron core lamination laminations coincide, thus, the interval of front end housing and rear end cap will have the deviation, rigidity and the not enough in the precision of three kinds of above-mentioned, it is little to the high-speed motor influence of miniwatt, nevertheless can bring serious noise and vibrations problem to powerful high-speed motor, the life of motor is also not long.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the assembling structure of the high-speed motor with higher rigidity and precision is provided, and the structural requirement of the high-speed motor with high power and complex load is met.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an assembly structure of high-speed motor, has stator, front end housing and rear end housing connect by the at least three first hookup bolt that the circumference distributes, be equipped with the first hookup ear that the circumference distributes on the periphery wall of front end housing and rear end housing looks distant respectively, first hookup ear on the front end housing and the first hookup ear one-to-one on the rear end housing, be equipped with the bolt hole on the first hookup ear, the first hookup ear that every group corresponds is by a first hookup bolt fixed connection, be equipped with the U-shaped cell body of burying and the first hookup bolt of centre gripping on the periphery wall of front end housing and rear end housing.

Specifically, the first coupling lug is a coupling lug integrally extending from the front end cover and the rear end cover.

Specifically, the U-shaped groove body integrally extends out of the front end cover and the rear end cover.

More specifically, the first coupling lug is integrally connected with the U-shaped groove body.

For improving the rigidity of the motor, the periphery wall of the front end cover close to the rear end cover is respectively provided with second coupling lugs distributed circumferentially, the second coupling lugs on the front end cover are in one-to-one correspondence with the second coupling lugs on the rear end cover, the second coupling lugs are provided with bolt holes, and each group of corresponding second coupling lugs are fixedly connected through a second coupling bolt.

In order to enable one second connecting bolt and one first connecting bolt to form a combined solid piece, each second connecting bolt is close to the corresponding first connecting bolt, the number of the second connecting bolts of the motor is equal to that of the first connecting bolts, and any second connecting bolt is circumferentially located between the two first connecting bolts and has different distances from the two first connecting bolts.

Specifically, the second coupling lug is a coupling lug integrally extending from the front end cover and the rear end cover.

In order to improve the assembly precision of the front end cover and the rear end cover, the motor is provided with a cylindrical shell wrapping the stator, and the front end face and the rear end face of the shell are respectively matched with the mouth type of the inner end face of the front end cover and the mouth type of the inner end face of the rear end cover.

The utility model has the advantages that: 1. the utility model arranges the longer first connecting bolt outside the motor, and arranges the U-shaped groove body for clamping the first connecting bolt on the front and rear end covers, thereby preventing the front and rear end covers from twisting and swinging, and improving the rigidity of the motor; 2. further, the second short connecting bolt is used for further fixed connection at the position close to the front end cover and the rear end cover, the second short connecting bolt has small length change under the condition of thermal expansion and cold contraction, the connection between the front end cover and the rear end cover is firmer, and the support rigidity of the rotor is improved; 3. the utility model uses the shell for the motor connected with the front and the rear end covers by the long connecting bolt, the distance between the front and the rear end covers is determined by the length of the shell, the coaxiality is ensured by the assembling seam allowance, and the precision of the motor is improved; by means of improving rigidity and precision of the high-speed motor, the high-speed motor can have high power and an output shaft end can bear complex load.

Drawings

The present invention will be further described with reference to the accompanying drawings and embodiments.

Fig. 1 is a schematic structural diagram of the present invention;

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

FIG. 3 is an axial cross-sectional view of the motor of FIG. 1;

fig. 4 is an enlarged view of fig. 3 at B.

In the figure: 1. the motor comprises a stator, 2, a front end cover, 3, a rear end cover, 4, a first connecting bolt, 5, a first connecting lug, 6, a U-shaped groove body, 7, a second connecting lug, 8, a second connecting bolt, 9 and a shell.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and thus only show the components that are relevant to the invention.

The assembling structure of a high-speed motor as shown in fig. 1 comprises a stator 1, a front end cover 2 and a rear end cover 3, wherein the front end cover 2 and the rear end cover 3 are connected by four first connecting bolts 4 distributed circumferentially, the peripheral wall of the front end cover 2 far away from the rear end cover 3 is respectively provided with first connecting lugs 5 distributed circumferentially, the first connecting lugs 5 on the front end cover 2 correspond to the first connecting lugs 5 on the rear end cover 3 one by one, the first connecting lugs 5 are provided with bolt holes, each group of corresponding first connecting lugs 5 are fixedly connected by one first connecting bolt 4, the peripheral walls of the front end cover 2 and the rear end cover 3 are provided with U-shaped groove bodies 6 embedded and clamping the first connecting bolts 4, the first connecting lugs 5 are integrally extended from the front end cover 2 and the rear end cover 3, similarly, the U-shaped groove bodies integrally extend from the front end cover 2 and the rear end cover 3, and the first connecting lugs 5 are integrally connected with the U-shaped groove bodies 6 as shown in fig. 2.

Still referring to fig. 1, the peripheral walls of the front end cover 2 and the rear end cover 3 that are close to each other are respectively provided with second coupling lugs 7 that are circumferentially distributed, the second coupling lugs 7 on the front end cover 2 correspond to the second coupling lugs 7 on the rear end cover 3 one by one, the second coupling lugs 7 are provided with bolt holes, each group of corresponding second coupling lugs 7 is fixedly coupled by one second coupling bolt 8, the number of the second coupling bolts 8 of the motor is equal to that of the first coupling bolts 4, any second coupling bolt 8 is circumferentially located between two first coupling bolts 4, and the distance between any second coupling bolt 8 and two first coupling bolts 4 is not equal, that is, the second coupling bolt 8 is closer to one first coupling bolt 4 than the middle position of two first coupling bolts 4, and the second coupling lug 7 is also a coupling lug that integrally extends from the front end cover 2 and the rear end cover 3.

As shown in fig. 3 and 4, the motor has a cylindrical housing 9 enclosing the stator 1, and front and rear end faces of the housing 9 are respectively in bayonet fitting with inner end faces of front and rear end caps.

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

Claims

1. The assembly structure of the high-speed motor comprises a stator (1), a front end cover (2) and a rear end cover (3), wherein the front end cover (2) and the rear end cover (3) are connected by at least three first connecting bolts (4) distributed circumferentially, and the assembly structure is characterized in that: the utility model discloses a bolt, including front end housing (2), rear end cap (3), the periphery wall of front end housing (2) and rear end cap (3) looks distant is equipped with first hookup ear (5) that the circumference distributes on the periphery wall respectively, first hookup ear (5) on front end housing (2) and the first hookup ear (5) one-to-one on rear end housing (3), be equipped with the bolt hole on first hookup ear (5), the first hookup ear (5) that every group corresponds are by a first hookup bolt (4) fixed hookup, be equipped with U-shaped cell body (6) of burying and first hookup bolt (4) of centre gripping on the periphery wall of front end housing (2) and rear end cap (3).

2. The assembling structure of a high-speed motor according to claim 1, wherein: the first connecting lug (5) is integrally extended from the front end cover (2) and the rear end cover (3).

3. An assembling structure of a high-speed motor according to claim 2, wherein: the U-shaped groove body integrally extends out of the front end cover (2) and the rear end cover (3).

4. The assembling structure of a high-speed motor according to claim 3, wherein: the first connecting lug (5) is integrally connected with the U-shaped groove body (6).

5. The assembling structure of a high-speed motor according to claim 1, wherein: the front end cover (2) and the peripheral wall of rear end cover (3) near are respectively provided with second coupling ears (7) distributed circumferentially, the second coupling ears (7) on the front end cover (2) and the second coupling ears (7) on the rear end cover (3) are in one-to-one correspondence, the second coupling ears (7) are provided with bolt holes, and the second coupling ears (7) corresponding to each group are fixedly connected through a second coupling bolt (8).

6. An assembling structure of a high speed motor according to claim 1, wherein: the number of the second connecting bolts (8) of the motor is equal to that of the first connecting bolts (4), and the distance between any second connecting bolt (8) and the two first connecting bolts (4) is different when the second connecting bolt is located between the two first connecting bolts (4) in the circumferential direction.

7. The assembling structure of a high-speed motor according to claim 1, wherein: the second connecting lug (7) is integrally extended from the front end cover (2) and the rear end cover (3).

8. An assembling structure of a high speed motor according to claim 1, wherein: the motor is provided with a cylindrical shell (9) wrapping the stator (1), and the front end face and the rear end face of the shell (9) are respectively matched with the mouth stop type of the inner end faces of the front end cover and the rear end cover.