CN210531432U

CN210531432U - Structure for eliminating bearing play

Info

Publication number: CN210531432U
Application number: CN201921636638.9U
Authority: CN
Inventors: 张宝夫
Original assignee: Taizhou Vocational and Technical College
Current assignee: Zhejiang Kailite Vacuum Technology Co.,Ltd.
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-05-15
Anticipated expiration: 2029-09-27

Abstract

The utility model provides a structure of eliminating bearing play includes the axle, cup joint the rotor on the axle, the stator is cup jointed to the rotor periphery, the casing is cup jointed to the stator periphery, the cover first is pressed to the first end of stator and rotor, the first end of axle wears out the cover first, the first end of axle cup joints axle sleeve first in proper order, the fastening by round nut first behind the bearing first, the inboard of bearing first compresses tightly on bearing frame first, bearing frame first compresses tightly on the cover first, the outside of bearing first is compressed tightly by bearing gland first, bearing gland first passes through the bolt fastening with bearing frame first; the second end of stator and rotor is pressed and is established cover second, the second end of axle is worn out cover second, the second end of axle cup joints axle sleeve second in proper order, fasten by round nut second behind the bearing second, the inboard of bearing second compresses tightly on bearing frame second, bearing frame second compresses tightly on cover second, the outside pressure of bearing second is equipped with bearing gland second, press from both sides between bearing second and the bearing gland second and establish the elastomer, the side of elastomer contact bearing second is the elasticity face that compresses tightly, bearing gland second passes through the bolt-up with bearing frame second.

Description

Structure for eliminating bearing play

Technical Field

The utility model belongs to the technical field of machinery, especially a structure of eliminating bearing play.

Background

The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. It should be a support in terms of its function, i.e. literally explained for bearing the shaft, but this is only a part of its function, the support being essentially capable of taking up radial loads. It is also understood that it is intended to fix the shaft. That is, the shaft is fixed so that it can only rotate, but controls its axial and radial movements. The motor cannot work at all without a bearing.

In order to ensure that the end clearances S1 and S2 between the rotor and the housing are fully utilized for thermal expansion, it is necessary to eliminate the clearances between the inner and outer races of the bearing, to improve the reliability of operation when the rotor thermally expands, and to improve the working efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided one kind and adopted one end to compress tightly firmly, other end elasticity compresses tightly to effectively eliminate the structure of the unnecessary clearance of terminal surface's elimination bearing play.

The purpose of the utility model can be realized by the following technical proposal: a structure for eliminating bearing play comprises a shaft, wherein the shaft is sleeved with a rotor, the periphery of the rotor is sleeved with a stator, the periphery of the stator is sleeved with a shell, the first end of the stator and the rotor is pressed to form a first cover, the first end of the shaft penetrates out of the first cover, the first end of the shaft is sequentially sleeved with a first shaft sleeve and a first bearing and then fastened by a first round nut, the inner side of the first bearing is tightly pressed on the first bearing seat, the first bearing seat is tightly pressed on the first cover, the outer side of the first bearing is tightly pressed by a first bearing cover, and the first bearing cover and the first bearing seat are tightly fastened by bolts; the second end of stator and rotor is pressed and is established cover second, the second end of axle is worn out the cover second, the second end of axle cup joints axle sleeve second, bearing second in proper order the back and is fastened by round nut second, the inboard of bearing second compresses tightly on bearing frame second, bearing frame second compresses tightly on the cover second, the outside of bearing second is pressed and is equipped with bearing gland second, press from both sides between bearing second and the bearing gland second and establish the elastomer, the elastomer contact the side of bearing second is the elasticity pressing surface, bearing gland second passes through the bolt-up with bearing frame second.

In the structure for eliminating the bearing play, an assembly groove is concavely formed in the inner side surface of the bearing gland B, the elastic body is embedded into the assembly groove, and the elastic pressing surface of the elastic body protrudes out of the notch of the assembly groove. The elastic pressing surface of the elastic body protrudes out of the notch of the assembling groove, so that effective elastic pre-tightening pressure can be generated on the bearing B, and therefore bearing play is remarkably eliminated.

In the above-described structure for eliminating bearing play, the elastic body is a spring. The elastic pressing force of the springs is uniformly distributed on the circumference.

In foretell structure of eliminating bearing play, set up recess first on the cover first, bearing frame first has the basin body first, the periphery of the basin body first has turns over along first, the embedding of basin body first in the recess first, turn over along first to support and lean on the outer wall of cover first.

In the above structure for eliminating the bearing play, the bearing shell is embedded in the tub shell.

In foretell structure of eliminating bearing play, set up recess second on the cover second, bearing frame second has the basin body second, the periphery of the basin body second has the turn-over edge second, basin body second embedding in the recess second, turn-over edge second supports and leans on the outer wall of cover second.

In the structure for eliminating the bearing play, the bearing B is embedded in the pot body B.

In the above-mentioned structure of eliminating the bearing play, the first end of casing is solid even cover first, the second end of casing is solid even cover second.

Compared with the prior art, in the structure for eliminating the bearing clearance, the leftward axial movement of the outer ring of the bearing at one end is fixed by the bearing gland, the outer ring of the bearing at the other end is elastically pressed to eliminate the clearance between the inner ring and the outer ring of the bearing, and the reserved end surface clearances S1 and S2 are ensured to be only used for the thermal expansion of the rotor, so that the operation reliability of the rotor during the thermal expansion is improved, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic sectional view of the present structure for eliminating bearing play.

In the figure, 1, a cover A; 2. a bearing seat A; 3. a bearing gland bush A; 4. a round nut A; 5. a shaft sleeve A; 6. a bearing A; 7. a shaft; 8. a rotor; 9. a stator; 10. a housing; 11. a machine cover B; 12. a bearing seat B; 13. bearing gland bush B; 14. an elastomer; 15. a bearing B; 16. a round screw cap B; 17. and a shaft sleeve B.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the structure for eliminating bearing play comprises a shaft 7, a rotor 8 is sleeved on the shaft 7, a stator 9 is sleeved on the periphery of the rotor 8, a shell 10 is sleeved on the periphery of the stator 9, a cover first 1 is pressed on the first end of the rotor 8 and the stator 9, the first end of the shaft 7 penetrates out of the cover first 1, a shaft sleeve first 5 and a bearing first 6 are sequentially sleeved on the first end of the shaft 7 and then fastened by a round nut first 4, the inner side of the bearing first 6 is pressed on a bearing seat first 2, the bearing seat first 2 is pressed on the cover first 1, the outer side of the bearing first 6 is pressed by a bearing gland first 3, and the bearing gland first 3 and the bearing seat first 2 are fastened by bolts; the second end of stator 9 and rotor 8 is pressed and is established cover second 11, cover second 11 is worn out to the second end of axle 7, axle sleeve second 17 is cup jointed in proper order to the second end of axle 7, fasten by round nut second 16 behind the bearing second 15, the inboard of bearing second 15 compresses tightly on bearing frame second 12, bearing frame second 12 compresses tightly on cover second 11, bearing second 15's outside is pressed and is equipped with bearing gland second 13, press from both sides between bearing second 15 and the bearing gland second 13 and establish elastomer 14, the side of elastomer 14 contact bearing second 15 is the elasticity and compresses tightly the face, bearing gland second 13 passes through the bolt-up with bearing frame second 12.

The inner side surface of the bearing gland B13 is concavely provided with an assembly groove, the elastic body 14 is embedded into the assembly groove, and the elastic pressing surface of the elastic body 14 protrudes out of the notch of the assembly groove. The elastic pressing surface of the elastic body 14 protrudes out of the notch of the assembling groove, so that effective elastic pre-tightening pressure can be generated on the bearing B15, and therefore bearing play is remarkably eliminated.

The elastic body 14 is a spring. The elastic pressing force of the springs is uniformly distributed on the circumference.

The cover A1 is provided with a groove A, the bearing seat A2 is provided with a basin body A, the periphery of the basin body A is provided with a turning edge A, the basin body A is embedded into the groove A, and the turning edge A abuts against the outer wall of the cover A1.

The bearing shell 6 is embedded in the basin body shell.

The cover B11 is provided with a groove B, the bearing seat B12 is provided with a pot body B, the periphery of the pot body B is provided with a turning edge B, the pot body B is embedded into the groove B, and the turning edge B is abutted against the outer wall of the cover B11.

The bearing B15 is embedded in the pot body B.

The first end of the shell 10 is fixedly connected with a machine cover A1, and the second end of the shell 10 is fixedly connected with a machine cover B11.

Compared with the prior art, in the structure for eliminating the bearing clearance, the leftward axial movement of the outer ring of the bearing at one end is fixed by the bearing gland, the outer ring of the bearing at the other end is elastically pressed to eliminate the clearance between the inner ring and the outer ring of the bearing, and the reserved end surface clearances S1 and S2 are ensured to be only used for the thermal expansion of the rotor 8, so that the operation reliability of the rotor 8 during the thermal expansion is improved, and the working efficiency is improved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the cover a 1 is used more herein; a bearing seat A2; a bearing gland bush A3; a round nut shell 4; a shaft sleeve A5; a bearing A6; a shaft 7; a rotor 8; a stator 9; a housing 10; a machine cover B11; a bearing seat B12; a bearing gland bush B13; an elastic body 14; a bearing B15; a round nut B16; sleeve b 17, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A structure for eliminating bearing play comprises a shaft, wherein the shaft is sleeved with a rotor, the periphery of the rotor is sleeved with a stator, the periphery of the stator is sleeved with a shell, and the structure is characterized in that the first end of the stator and the rotor is pressed to form a first cover, the first end of the shaft penetrates out of the first cover, the first end of the shaft is sequentially sleeved with a first shaft sleeve and a first bearing and then fastened by a first round nut, the inner side of the first bearing is pressed on the first bearing seat, the first bearing seat is pressed on the first cover, the outer side of the first bearing is pressed by the first bearing cover, and the first bearing cover and the first bearing seat are fastened through bolts; the second end of stator and rotor is pressed and is established cover second, the second end of axle is worn out the cover second, the second end of axle cup joints axle sleeve second, bearing second in proper order the back and is fastened by round nut second, the inboard of bearing second compresses tightly on bearing frame second, bearing frame second compresses tightly on the cover second, the outside of bearing second is pressed and is equipped with bearing gland second, press from both sides between bearing second and the bearing gland second and establish the elastomer, the elastomer contact the side of bearing second is the elasticity pressing surface, bearing gland second passes through the bolt-up with bearing frame second.

2. The structure for eliminating bearing play according to claim 1, wherein an assembly groove is concavely formed on an inner side surface of the bearing gland b, the elastic body is embedded in the assembly groove, and an elastic pressing surface of the elastic body protrudes out of a notch of the assembly groove.

3. The structure that eliminates bearing play according to claim 1, characterized in that the elastic body is a spring.

4. The structure for eliminating bearing play as claimed in claim 1, wherein a groove A is formed on the cover A, the bearing seat A has a basin body A, a turning edge A is arranged on the periphery of the basin body A, the basin body A is embedded into the groove A, and the turning edge A abuts against the outer wall of the cover A.

5. The structure that eliminates bearing play according to claim 4, characterized in that the bearing shell is embedded in the tub shell.

6. The structure for eliminating bearing play according to claim 1, wherein a groove B is formed in the cover B, the bearing seat B is provided with a basin body B, the periphery of the basin body B is provided with a turning edge B, the basin body B is embedded into the groove B, and the turning edge B abuts against the outer wall of the cover B.

7. The structure of eliminating bearing play according to claim 6, wherein the bearing B is embedded in the bowl B.

8. The structure for eliminating bearing play according to claim 1, wherein the first end of the housing is fixedly connected to the first cover, and the second end of the housing is fixedly connected to the second cover.