CN211930394U

CN211930394U - Motor bearing fixing structure

Info

Publication number: CN211930394U
Application number: CN202020863031.0U
Authority: CN
Inventors: 孙新年
Original assignee: Henan Chelan Environmental Protection Technology Co ltd
Current assignee: Henan Chelan Environmental Protection Technology Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2020-11-13
Anticipated expiration: 2030-05-21

Abstract

The utility model provides a motor bearing fixed knot constructs, this fixed knot constructs includes: flexible solid fixed ring, flexible spacing ring and fixed caulking ring. Wherein, flexible solid fixed ring cover is on the axial extension of casing, and flexible solid fixed ring inner ring has a plurality of damping splines, has the fixed seam that corresponds with the damping spline on the axial extension, and damping spline joint is in fixed seam, and deepens to the axial extension inside and with the inside bearing outer ring interference fit of axial extension. The bearing is used for supporting and fixing the rotating shaft. The flexible limiting ring is arranged in the axial extension part and positioned between one side of the bearing and the axial extension part and used for axially limiting the bearing. The fixed embedded ring is embedded in the flexible fixed ring and used for limiting the elastic modulus of the flexible fixed ring. The utility model provides a fixed knot constructs simple structure, and can greatly reduce the transmission of vibration, and carries out the aligning to the bearing at the pivoted in-process, and the rotation of the bearing that makes is more steady, prolongs the life of the service function of bearing.

Description

Motor bearing fixing structure

Technical Field

The utility model relates to a technical field of making an uproar falls in the damping of motor especially relates to the motor bearing is fixed, specifically is a motor bearing fixed knot constructs.

Background

The motor used in the current market has the condition that a rotating shaft and a bearing generate noise due to vibration during operation, the vibration can generate noise and influence the service life of the rotating shaft and the bearing, and the noise can also reduce the use experience. In order to reduce the vibration generated by the bearing and the rotating shaft during rotation, the existing method generally improves the production precision and the assembly precision, and needs to perform dynamic balance adjustment on the rotor, which greatly increases the production period and the production cost, and hardly ensures the stability of the dynamic balance of the rotor during the use of the motor.

The utility model discloses to above-mentioned problem, reform transform the bearing of motor and the fixed mode of pivot, the bearing that makes can reduce the vibration range at moving in-process self-balancing, and then reduces the running noise.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a motor bearing fixed knot constructs. This motor bearing fixed knot constructs can greatly reduce the transmission of vibration, and carries out the aligning to the bearing at the pivoted in-process, and the rotation of messenger is more steady, prolongs the life of the service life of bearing.

The utility model provides a motor bearing fixed knot constructs, this fixed knot constructs includes: the flexible fixing ring is sleeved on an axial extension part of the shell, the flexible fixing ring inner ring is provided with a plurality of vibration reduction splines, and fixing seams corresponding to the vibration reduction splines are formed in the axial extension part; a bearing is arranged inside the axial extension part and is in interference fit with the vibration reduction spline; the bearing is sleeved on the rotating shaft and used for supporting and fixing the rotating shaft; the flexible limiting ring is arranged in the axial extension part, is positioned between one side of the bearing and the axial extension part, and is used for axially limiting the bearing; and the fixed embedded ring is embedded into the flexible fixed ring and used for limiting the elastic modulus of the flexible fixed ring.

The utility model discloses an among the embodiment, this fixed knot constructs still includes: the flexible vibration damping ring is arranged between the bearing and the rotating shaft and used for reducing vibration transmission between the bearing and the rotating shaft.

The utility model discloses an among the embodiment, flexible damping ring tangent plane is the L type, flexible damping ring perpendicular to the part of pivot axis is used for right the bearing carries out the axial spacing.

The utility model discloses an in the embodiment, axial extension is for following the drum that the casing axis extends outward, the drum diameter is less than the diameter of casing.

The cylinder wall is provided with a fixing seam corresponding to the vibration reduction spline, and the length of the fixing seam is the same as the axial length of the axial extension part.

The utility model discloses an among the embodiment, the inner wall of damping spline arrives the distance of flexible solid fixed ring's axis is less than axial extension's radius.

In an embodiment of the present invention, the vibration reduction spline and the flexible fixing ring are integrally formed.

The utility model discloses an among the embodiment, flexible solid fixed ring both ends all have damping milk nail, damping milk nail is used for supporting and reducing the transmission efficiency of vibration.

In an embodiment of the present invention, the flexible fixing ring coincides with the axis of the fixing insert ring.

The utility model discloses an among the embodiment, casing formula plastic envelope shell as an organic whole.

According to the above embodiment, the utility model provides a motor bearing fixed knot constructs has following benefit: the utility model provides a fixed connection mode is fixed pivot and bearing through using the flexible piece, be flexonics between pivot and the bearing of messenger or between bearing and the casing, this has the advantage of making an uproar that falls in the damping for the rigidity fixed connection mode of motor shaft and bearing among the prior art, and flexible fixed connection spare can stop the transmission of vibration, prevents that pivot or bearing from transmitting out at the vibration that rotates the in-process and produce the noise. In addition, the flexible connecting piece for fixing the bearing can play a role of aligning, so that the bearing can be ensured to run stably in a rotating state.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification of the invention, illustrate exemplary embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a first angle cross-sectional view of a first embodiment of a motor bearing fixing structure provided by the present invention.

Fig. 2 is a second angle cross-sectional view of a first embodiment of a motor bearing fixing structure provided by the present invention.

Fig. 3 is a cross-sectional view taken along a line a-a of a first embodiment of a motor bearing fixing structure provided by the present invention.

Fig. 4 is a first angle cross-sectional view of a second embodiment of a motor bearing fixing structure provided by the present invention.

Fig. 5 is a second angle cross-sectional view of an embodiment of a motor bearing fixing structure provided by the present invention.

Fig. 6 is a shell structure diagram of a motor bearing fixing structure provided by the utility model.

Fig. 7 is the utility model provides a motor bearing fixed knot constructs the structure chart of the solid fixed ring of flexibility.

Fig. 8 is a cut-away view of the flexible fixing ring of the motor bearing fixing structure provided by the present invention.

Description of reference numerals:

the vibration reduction device comprises a flexible fixing ring 1, a flexible limiting ring 2, a fixed embedded ring 3, a shell 4, an axial extension part 5, a vibration reduction spline 6, a bearing 7, a rotating shaft 8, a flexible vibration reduction ring 9, a vibration reduction nail 10, a fixing seam 11, a clamp spring 12, a motor rotor 13 and a motor stator 14.

Detailed Description

Reference will now be made in detail to various exemplary embodiments of the invention, which should not be considered limiting of the invention, but rather should be understood to be a more detailed description of certain aspects, features and embodiments of the invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The specification and examples are exemplary only.

Fig. 1 shows a first angle cross-sectional view of a first embodiment of a motor bearing fixing structure provided by the present invention. In the embodiment shown in the figures, the fixing structure comprises: flexible solid fixed ring 1, flexible spacing ring 2 and fixed caulking ring 3. In which the flexible securing ring 1 is fitted over the axial extension 5 of the housing 4, as shown in figure 3. In addition, as shown in fig. 7, the inner ring of the flexible fixing ring 1 has a plurality of damping splines 6, and it is preferable in the present embodiment that the damping splines 6 are uniformly provided on the inner ring of the flexible fixing ring 1. As shown in fig. 6, the axially extending portion 5 has a fixing slit 11 corresponding to the damping spline 6, and the damping spline 6 is engaged in the fixing slit 11 and extends into the axially extending portion 5. Specifically, the damper spline 6 can be snapped into the fixing slit 11 from the tip of the axially extending portion 5 and slid along the axis of the axially extending portion 5.

The axial extension 5 is internally provided with a bearing 7, as shown in fig. 2, the bearing 7 is in interference fit with the damping spline 6, that is, the outer ring of the bearing 7 is in interference fit with the damping spline 6, and the damping spline 6 plays a role of supporting the bearing 7. While the outer ring of the bearing 7 does not contact the axially extending portion 5, a rigid connection between the bearing 7 and the housing 4 is avoided, reducing the transmission efficiency of vibrations. In addition, the bearing 7 is sleeved on the rotating shaft 8 and used for supporting and fixing the rotating shaft 8. The motor rotor 13 is fixed on the rotating shaft 8, the motor stator 14 is fixed on the shell 4, and a rotating gap is reserved between the motor rotor 13 and the motor stator 14.

In this embodiment, the bearing 7 is limited to the production precision and the installation precision, and a certain error may occur in the production and installation processes of the bearing 7. The inner and outer rings of the bearing 7 cannot be perfectly rounded during production and the balls cannot be perfectly spherical, which leads to the bearing 7 being shaken during use. As the service time increases, the wobbling of the bearing 7 increases with the severity of the wear, which in turn leads to a reduced service life. In the concrete implementation of this embodiment, the rotatory bearing 7 inner ring that drives of pivot 8 rotates, because installation and production error produce rock can transmit damping spline 6 on, damping spline 6 exerts the reaction force to bearing 7, and the concentricity of bearing 6 inner ring and outer ring can be adjusted to the reaction force, and the bearing that makes as far as possible rotates steadily. Meanwhile, the rotating shaft 8 can rotate more stably under the action of the reaction force, so that the service life of the bearing 7 can be prolonged, and the running noise of the bearing 7 and the rotating shaft 8 is reduced. The structure described in the embodiment can realize that the rotation is more stable as the operation speed is higher, and solves the problem that the high-speed and low-noise rotation cannot be realized in the prior art.

In order to fix the axial position of the bearing 7 with respect to the rotating shaft 8, a flexible retainer ring 2 is provided inside the axially extending portion 5, the flexible retainer ring 2 being located between one side of the bearing 7 and the axially extending portion 5. The other side of the bearing 7 is provided with a snap spring 12, and the snap spring 12 is arranged in an annular groove on the rotating shaft 8 and used for preventing the bearing 7 from moving axially.

The fixed embedded ring 3 is embedded into the flexible fixed ring 1, and the axis of the flexible fixed ring 1 coincides with that of the fixed embedded ring 3. Fixed thimble 3 is used for restricting the elastic modulus of flexible solid fixed ring 1, and through adding fixed thimble 3, the radial deformation volume of flexible solid fixed ring 1 can reduce, like this under the prerequisite that does not influence the vibration damping of flexible solid fixed ring 1, can also promote the stability of flexible solid fixed ring 1, can not cause bearing 7 to take place too big radial skew because of the atress is too big, has promoted moving stability.

In the specific embodiment of the present invention, as shown in fig. 6, the axial extension portion 5 is a cylinder extending outward along the axis of the housing 4, and the diameter of the cylinder is smaller than that of the housing 4. The cylindrical wall has a fixing slit 11 corresponding to the vibration reduction spline 6, and the length of the fixing slit 11 is the same as the axial length of the axially extending portion 5.

The distance of the inner wall of the damping spline 6 to the axis of the flexible fixing ring 1 is smaller than the radius of the axial extension 5. As shown in fig. 1, when the bearing 7 is mounted in the axially extending portion 5, the outer ring of the bearing 7 is interference fitted with the damper spline 6, and the damper spline 6 functions to support the bearing 7. The outer ring of the bearing 7 is in clearance fit with the axially extending portion 5, and this gap prevents the bearing 7 from coming into contact with the housing 4, thereby reducing the generation of noise.

In a specific embodiment of the present invention, the vibration reduction spline 6 is integrally formed with the flexible fixing ring 1.

In the specific embodiment of the utility model, as shown in fig. 8, the flexible fixing ring 1 has damping milk nails 10 at both ends, and the damping milk nails 10 are used for supporting and reducing the transmission efficiency of vibration. The damping milk nail 10 can reduce the contact area, and the contact area reduces the transmission that can effectual reduction vibration, and further separation vibration transmission reduces the noise.

The utility model discloses an among the embodiment, 4 formula plastic envelope shells as an organic whole of casing. Integral type plastic envelope shell structural strength is high, and the quality is lighter, and low cost has certain waterproof dirt-proof effect, and can avoid the oxidation and corroded by liquid.

As shown in fig. 4, another embodiment of the present invention is provided, in this embodiment, the fixing structure further includes: and the flexible vibration damping ring 9 is arranged between the bearing 7 and the rotating shaft 8, and is used for reducing the vibration transmission between the bearing 7 and the rotating shaft 8. The flexible vibration damping ring 9 is arranged between the bearing 7 and the rotating shaft 8, so that the vibration generated in the rotating process of the bearing 7 can be reduced, and the transmission of the vibration can be reduced.

The bearing 7 is limited in production accuracy and mounting accuracy, and a certain error may occur during the production and mounting of the bearing 7. The inner and outer rings of the bearing 7 cannot be perfectly rounded during production and the balls cannot be perfectly spherical, which leads to the bearing 7 being shaken during use. And because the rotating shaft 8 also has production precision, the rotating radius can float when rotating, and the floating can generate certain radial acting force on the bearing 7, so that the bearing 7 can shake. As the service time increases, the wobbling of the bearing 7 increases with the severity of the wear, which in turn leads to a reduced service life. In the specific implementation of this embodiment, the rotation of pivot 8 drives the bearing 7 inner ring and rotates, and the radial turning radius that pivot 8 produced floats and can be absorbed by flexible damping ring 9 between bearing 7 and the pivot 8 to certain reaction force is given back to pivot 8, and pivot 8 that messenger can be more steady when rotating. And bearing 7 rocks when rotating and rocks and the rocking that pivot 8 brought can transmit damping spline 6 on, damping spline 6 can exert reaction force to bearing 7 when absorbing partly rocking, and the concentricity of outer ring in bearing 6 can be adjusted to reaction force, and the bearing that makes as far as possible rotates steadily. Meanwhile, the rotating shaft 8 can rotate more stably under the action of the reaction force, so that the service life of the bearing 7 can be prolonged, and the running noise of the bearing 7 and the rotating shaft 8 is reduced. The structure described in the embodiment can realize that the rotation is more stable as the operation speed is higher, and solves the problem that the high-speed and low-noise rotation cannot be realized in the prior art.

The section of the flexible vibration reduction ring 9 is L-shaped, and the part of the flexible vibration reduction ring 9, which is vertical to the axis of the rotating shaft 8, is used for axially limiting the bearing 7. One side of the bearing 7 is axially limited by the flexible damping ring 9 to the inner ring of the bearing 7, and the other side of the bearing 7 is axially limited by the flexible limiting ring 2 to the outer ring of the bearing 7, so that the bearing 7 can be flexibly axially fixed, rigid contact is avoided, vibration transmission can be reduced while limitation is realized, and noise is greatly reduced.

In a specific embodiment of the present invention, the distance from the inner wall of the vibration reduction spline 6 to the axis of the flexible fixing ring 1 is smaller than the radius of the axial extension portion 5. As shown in fig. 5, when the bearing 7 is mounted in the axially extending portion 5, the outer ring of the bearing 7 is interference fitted with the damper spline 6, and the damper spline 6 functions to support the bearing 7. As shown in fig. 4, the outer ring of the bearing 7 is in clearance fit with the axially extending portion 5, and this clearance prevents the bearing 7 from coming into contact with the housing 4, thereby reducing the generation of noise.

The foregoing is only an illustrative embodiment of the present invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present invention should fall within the protection scope of the present invention.

Claims

1. A motor bearing fixing structure, characterized in that, this fixing structure includes: a flexible fixing ring (1), a flexible limiting ring (2) and a fixing embedded ring (3), wherein,

the flexible fixing ring (1) is sleeved on an axial extension part (5) of the shell (4), the inner ring of the flexible fixing ring (1) is provided with a plurality of vibration reduction splines (6), and the axial extension part (5) is provided with fixing seams (11) corresponding to the vibration reduction splines (6);

a bearing (7) is arranged inside the axial extension part (5), and the bearing (7) is in interference fit with the vibration reduction spline (6);

the bearing (7) is sleeved on the rotating shaft (8) and used for supporting and fixing the rotating shaft (8);

the flexible limiting ring (2) is arranged inside the axial extension part (5), is positioned between one side of the bearing (7) and the axial extension part (5), and is used for axially limiting the bearing (7); and

the fixed embedded ring (3) is embedded into the flexible fixed ring (1) and used for limiting the elastic modulus of the flexible fixed ring (1).

2. The motor bearing fixing structure of claim 1, further comprising: the flexible vibration damping ring (9) is arranged between the bearing (7) and the rotating shaft (8) and used for reducing vibration transmission between the bearing (7) and the rotating shaft (8).

3. The motor bearing fixing structure according to claim 2, wherein the section of the flexible damping ring (9) is L-shaped, and the part of the flexible damping ring (9) perpendicular to the axis of the rotating shaft (8) is used for axially limiting the bearing (7).

4. Motor bearing fixation arrangement according to claim 1, characterized in that the axial extension (5) is a cylinder extending outwards along the axis of the housing (4), the cylinder diameter being smaller than the diameter of the housing (4).

5. The motor bearing fixing structure according to claim 4, characterized in that the cylindrical wall has a fixing slit (11) corresponding to the vibration reduction spline (6), and the length of the fixing slit (11) is the same as the axial length of the axial extension (5).

6. Motor bearing fixation arrangement according to claim 4, characterized in that the distance of the inner wall of the damping spline (6) to the axis of the flexible fixation ring (1) is smaller than the radius of the axial extension (5).

7. The motor bearing fixing structure according to claim 1, wherein the vibration reduction spline (6) is integrally formed with the flexible fixing ring (1).

8. The motor bearing fixing structure according to claim 1, wherein the flexible fixing ring (1) has vibration damping nails (10) at both ends, and the vibration damping nails (10) are used for supporting and reducing the transmission efficiency of vibration.

9. Motor bearing fixation arrangement according to claim 1, characterized in that the flexible fixation ring (1) coincides with the axis of the fixation thimble (3).

10. The motor bearing fixing structure according to claim 1, wherein the housing (4) is an integral plastic-sealed casing.