CN216721113U

CN216721113U - Mounting structure of motor with gear box

Info

Publication number: CN216721113U
Application number: CN202123083251.5U
Authority: CN
Inventors: 李仙林
Original assignee: Taizhou Leitai Industry And Trade Co ltd
Current assignee: Taizhou Leitai Industry And Trade Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-06-10
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses an installation structure of a motor with a gear box, belonging to the field of motor design and manufacture. The second bearing on the rotating shaft is arranged in the gear box, so that the motor and the gear box are integrated, the concentricity of the rotating shaft is better when the motor operates, the vibration of the motor in operation is reduced, the stability and the reliability of the operation of the motor are enhanced, and the operation failure rate of the motor is reduced.

Description

Mounting structure of motor with gear box

Technical Field

The utility model relates to the field of motor design and manufacture, in particular to a mounting structure of a motor with a gear box.

Background

The gear box is a speed change device for realizing speed change effect by meshing of a large gear and a small gear, and has many applications in the speed change of industrial machinery. In some production, the gear box is through motor drive work, and among the prior art, the bearing of most motors is installed on motor casing front and back end cover, and when adopting this kind of mode drive gear box train, the concentricity of motor shaft has the deviation, and long-term operation can lead to the dynamic balance unstability of pivot, and then causes the in service vibration, and motor vibration can destroy motor operating stability, spare part damage scheduling problem.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a motor mounting structure with better concentricity during motor operation.

The technical scheme of the utility model is as follows:

the utility model provides a mounting structure of motor with gear box, motor include the motor casing, and this motor casing and gear box are connected, the inside of motor casing is equipped with the pivot, the pivot cover is equipped with stator and rotor, its characterized in that: the motor shell is characterized in that one side, close to the gear box, of the rotating shaft is defined as an inner end, the side, far away from the gear box, of the rotating shaft is defined as an outer end, the outer end of the rotating shaft is connected with the motor shell through a first bearing, and the inner end of the rotating shaft is connected with the gear box through a second bearing.

The second bearing on the rotating shaft is arranged in the gear box, so that the motor and the gear box are integrated, the concentricity of the rotating shaft is better when the motor operates, the vibration of the motor in operation is reduced, the stability and the reliability of the operation of the motor are enhanced, and the operation failure rate of the motor is reduced.

Preferably, the motor shell comprises a motor shell cover, the motor shell cover is provided with a rotating shaft positioning cavity, and the first bearing is installed in the rotating shaft positioning cavity; the inner of pivot extends to in the shaft hole of gear box, the one end that the shaft hole is close to the motor has seted up the dead eye, and this dead eye is equipped with the second bearing.

Preferably, the width of the bearing hole is matched with that of the second bearing, the diameter of the bearing hole is larger than that of the shaft hole, and a shoulder in the stepped hole is formed.

Preferably, the inner race of the second bearing is secured by a shoulder and the outer race is secured by an internal shoulder of the bore.

Preferably, the part of the rotating shaft in the motor shell is defined as a shaft body, the part in the bearing hole is defined as a shaft neck, and the part in the shaft hole is defined as a shaft head; the shaft body and the shaft neck are provided with overtravel grooves at the adjacent positions.

Preferably, the diameter of the shaft journal is larger than that of the shaft head, and the adjacent positions of the shaft journal and the shaft head are transited through splayed grooves which are arranged on the rotating shaft and are uniformly distributed along the radial direction of the rotating shaft.

Preferably, the shaft head is provided with a plurality of racks which extend along the axial direction of the rotating shaft and are arranged at intervals along the radial direction of the rotating shaft.

The beneficial technical effects of the utility model are as follows:

1. the second bearing on the rotating shaft is arranged in the gear box, so that the motor and the gear box are integrated, the concentricity of the rotating shaft is better when the motor operates, and the stability and the reliability of the operation of the motor are enhanced;

2. through the design of the overtravel groove, the surface of the rotating shaft is thoroughly ground, and the surface glossiness and the flatness are consistent.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along plane A-A of FIG. 2 without the bearing and shaft;

FIG. 5 is a front view of the spindle;

wherein: 1. a motor housing; 2. a gear case; 3. a rotating shaft; 4. a rotor; 5. a stator; 6. a motor case cover; 7. a first bearing; 8. a second bearing; 9. a shaft hole; 10. a bearing bore; 11. shoulder is arranged in the hole;

31. a shaft body; 32. a journal; 33. a shaft head; 34. and (4) an overtravel groove.

Detailed Description

In order to make the technical means of the present invention clearer and to make the technical means of the present invention capable of being implemented according to the content of the specification, the following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples, which are provided for illustrating the present invention and are not intended to limit the scope of the present invention.

The embodiment is as follows: as shown in fig. 1 to 5, the motor includes a motor housing 1, the motor housing 1 is connected to a gear box 2, a rotating shaft 3 is disposed inside the motor housing 1, and a rotor 4 and a stator 5 are sleeved on the rotating shaft 3. The one side that the definition pivot is close to the gear box is inner, and the one side of keeping away from the gear box is the outer end, and the outer end and the motor casing of pivot link to each other through first bearing 7, and the inner and the gear box of pivot link to each other through second bearing 8. The motor shell comprises a motor shell cover 6, a rotating shaft positioning cavity is formed in the motor shell cover, and the first bearing is installed in the rotating shaft positioning cavity. The inner end of the rotating shaft extends into a shaft hole 9 of the gear box 2, a bearing hole 10 is formed in one end, close to the motor, of the shaft hole 9, and a second bearing 8 is arranged in the bearing hole 10. The width of the bearing hole 10 is matched with that of the second bearing 8, the diameter of the bearing hole 10 is slightly larger than that of the other part of the shaft hole 9, and a stepped hole inner shoulder 11 is formed.

In the embodiment, the bearing is a ball bearing, and can also be a roller bearing in actual production, and the specific form is not limited. The inner ring of the second bearing 8 is fixed by a shaft shoulder and the outer ring is fixed by a hole inner shoulder 11. The fixing mode of the bearing in actual production can also be in other forms, for example, the inner ring can be fixed in a bidirectional mode through the shaft shoulder and the elastic retainer ring, and the outer ring can be fixed in a bidirectional mode through the hole inner shoulder and the hole elastic retainer ring.

The part of the rotating shaft 3 in the motor casing 1 is called a shaft body 31, the part in the bearing hole 10 is called a shaft journal 32, and the part in the shaft hole 9 is called a shaft head 33. The shaft body 31 is provided with an overtravel groove 34 adjacent to the shaft neck 32. The journal 32 has a diameter slightly larger than the diameter of the stub shaft 33. The spindle head 33 is provided with a plurality of racks which extend along the axial direction of the rotating shaft and are uniformly arranged at intervals along the radial direction of the rotating shaft.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a mounting structure of motor with gear box, motor include motor casing (1), and this motor casing and gear box (2) are connected, the inside of motor casing (1) is equipped with pivot (3), the pivot cover is equipped with rotor (4) and stator (5), its characterized in that: the side of the rotating shaft close to the gear box is defined as an inner end, the side far away from the gear box is defined as an outer end, the outer end of the rotating shaft is connected with the motor shell through a first bearing (7), and the inner end of the rotating shaft is connected with the gear box through a second bearing (8).

2. The mounting structure of an electric motor with a gear box according to claim 1, wherein; the motor shell (1) comprises a motor shell cover (6), a rotating shaft positioning cavity is formed in the motor shell cover, and the first bearing (7) is installed in the rotating shaft positioning cavity; the inner of pivot extends to in the shaft hole (9) of gear box, bearing hole (10) have been seted up to the one end that the shaft hole is close to the motor, and this bearing hole is equipped with the second bearing.

3. The mounting structure of an electric motor with a gear box according to claim 2, wherein: the width of the bearing hole (10) is matched with that of the second bearing, the diameter of the bearing hole is larger than that of the shaft hole, and a shoulder (11) in the stepped hole is formed.

4. The mounting structure of an electric motor with a gear box according to claim 3, wherein: the inner ring of the second bearing (8) is fixed through a shaft shoulder, and the outer ring is fixed through an inner shoulder (11) of the hole.

5. The mounting structure of an electric motor with a gear box according to claim 1, wherein: the part of the rotating shaft in the motor shell is defined as a shaft body (31), the part in the bearing hole is defined as a shaft journal (32), and the part in the shaft hole is defined as a shaft head (33); an overtravel groove (34) is arranged at the position of the shaft body adjacent to the shaft neck.

6. The mounting structure of an electric motor with a gear box according to claim 5, wherein: the diameter of the shaft neck is larger than that of the shaft head.

7. The mounting structure of an electric motor with a gear box according to claim 5, wherein: the spindle head is provided with a plurality of racks which extend along the axial direction of the rotating shaft and are uniformly arranged at intervals along the radial direction of the rotating shaft.