CN211314863U

CN211314863U - Special bearing for aviation gyroscope and sensor

Info

Publication number: CN211314863U
Application number: CN201920152797.5U
Authority: CN
Inventors: 吴勇平; 阳廷伍
Original assignee: Hangzhou Yijia Precision Bearing Co ltd
Current assignee: Hangzhou Yijia Precision Bearing Co ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-08-21
Anticipated expiration: 2029-01-29

Abstract

The utility model provides a special bearing for an aviation gyroscope and a sensor, which comprises a bearing outer ring mechanism, a bearing inner ring, a bearing retainer mechanism and a steel ball, the supporting rod of the utility model, the arrangement of the inner surface of the bearing retainer body and the bearing outer ring mechanism, polyimide which can resist high temperature above 400 ℃ and has high insulativity, the bearing retainer body is made of polyimide material, the material use standard of the special bearing is satisfied, the purpose of prolonging the service life of the bearing is achieved, the supporting rod is arranged between the bearing retainer body and the bearing inner ring, the bearing retainer body is fixed at the outer side of the bearing outer ring, the phenomenon of shaking of the bearing retainer body in the bearing operation process is prevented, the abrasion of the bearing is reduced, the stability of the bearing is improved, the inner surface adopts a conical shape, the radial force of the bearing outer ring body in the bearing operation process is dispersed and, the phenomenon that the bearing outer ring body deforms due to overlarge radial force is avoided.

Description

Special bearing for aviation gyroscope and sensor

Technical Field

The utility model belongs to the technical field of the bearing, especially, relate to aviation gyroscope and sensor special bearing.

Background

The bearing is an important part in the modern mechanical equipment, and has the main functions of supporting a mechanical rotating body, reducing the friction coefficient in the motion process of the mechanical rotating body and ensuring the rotation precision of the mechanical rotating body, wherein the rolling bearing is standardized and serialized, the rolling bearing generally consists of four parts, namely an outer ring, an inner ring, a rolling body, a retainer, lubricating grease and the like, and the rolling bearing mainly comprises the outer ring, the inner ring and the rolling body.

The existing bearing retainer for the aviation gyroscope and the sensor is made of low-carbon steel, the temperature of the retainer can reach 300 ℃ in the bearing operation process, the mechanical strength of the retainer is low, the service life of the retainer is short, the inner surface of an outer ring is in a ring shape, the radial force in the bearing operation process is large, the phenomenon that the outer ring of the bearing is deformed is easily caused, the retainer lacks a supporting mechanism, the phenomenon that the retainer shakes in the bearing operation process is caused, the abrasion of the bearing is increased, and the stability of the bearing is reduced.

Therefore, the invention of a bearing special for an aviation gyroscope and a sensor is very necessary.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an aviation gyroscope and sensor special bearing, adopt the low carbon steel material with solving current aviation gyroscope and bearing holder for the sensor, the holder temperature can reach 300 ℃ in the bearing operation process, holder mechanical strength is low, short service life, the ring shape is adopted to the outer lane internal surface, radial force is great in the bearing operation process, cause the phenomenon that the bearing outer lane appears warping easily, the holder lacks supporting mechanism, the phenomenon that the holder appears rocking in the bearing operation process, increase the wearing and tearing of bearing, reduce the problem of the stability of bearing. The bearing special for the aviation gyroscope and the sensor comprises a bearing outer ring mechanism, a bearing inner ring, a bearing retainer mechanism and a steel ball, wherein the bearing inner ring is clamped inside the bearing outer ring mechanism; the bearing retainer mechanism is welded on the outer side of the bearing inner ring and is positioned between the bearing outer ring mechanism and the bearing inner ring; a plurality of steel balls are embedded on the circumference of the bearing retainer mechanism.

The bearing outer ring mechanism comprises a bearing outer ring body, a groove, an inner surface and a chamfer, wherein the inner surface is arranged on the inner side of the bearing outer ring body; the groove is formed in the middle of the inner side of the bearing outer ring body; the two chamfers are arranged on two sides of the bearing outer ring body.

The inner surface is conical; the size of the chamfer is 3mm multiplied by 45 degrees; the size of the groove is matched with that of the steel ball; the bearing outer ring body is annular; the inner surface, the chamfer and the bearing outer ring body are integrated.

The bearing retainer mechanism comprises a bearing retainer body, a through hole and a support rod, wherein the bearing retainer body is positioned between the bearing outer ring mechanism and the bearing inner ring; the upper end of each support rod is welded on the inner side of the bearing retainer body, and the lower end of each support rod is welded on the outer side of the bearing inner ring; the through holes are arranged on the circumference of the bearing retainer body.

The bearing retainer body is in a ring shape, and is made of polyimide specifically; the size of the through hole is matched with that of the steel ball, the polyimide is resistant to high temperature of more than 400 ℃ and has high insulativity, the bearing retainer body is made of polyimide, the material use standard of a special bearing is met, and the purpose of prolonging the service life of the bearing is achieved.

The bearing outer ring mechanism, the bearing inner ring and the steel ball are made of G9Cr18 materials and G9Cr18 materials, so that the rated load of the bearing is improved, the bearing is prevented from running in an overload mode, the fatigue of the bearing in the running process is reduced, and the bearing is guaranteed to run stably and efficiently.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a setting of bearing holder body, polyimide is high temperature resistant more than reaching 400 ℃, has high insulating nature, and bearing holder body adopts the polyimide material, satisfies special bearing's material service standard, reaches the purpose that improves bearing life.

2. The utility model discloses a bearing inner race mechanism, the setting of bearing inner race and steel ball adopts the G9Cr18 material, improves the rated load of bearing, guarantees that the bearing can not the overload operation, reduces the fatigue degree of bearing operation in-process, guarantees the steady high-efficient operation of bearing.

3. The utility model discloses a setting of bearing inner race mechanism, internal surface adopt conical, and the radial force dispersion that makes bearing inner race body receive in the bearing operation process turns into radial force and axial force, avoids the radial force too big phenomenon that causes the bearing inner race body to appear warping.

4. The utility model discloses a setting of bracing piece sets up the bracing piece between bearing holder body and bearing inner race, makes the bearing holder body fix in the outside of bearing inner race, prevents that the phenomenon of rocking from appearing in the bearing holder body among the bearing operation process, reduces the wearing and tearing of bearing, improves the stability of bearing.

Drawings

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

Fig. 2 is a schematic structural diagram of the bearing outer ring mechanism of the present invention.

Fig. 3 is a schematic structural view of the bearing holder mechanism of the present invention.

In the figure:

1-bearing outer ring mechanism, 11-bearing outer ring body, 12-groove, 13-inner surface, 14-chamfer, 2-bearing inner ring, 3-bearing retainer mechanism, 31-bearing retainer body, 32-through hole, 33-support rod and 4-steel ball.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example (b):

as shown in figures 1 to 3

The utility model provides a special bearing for an aviation gyroscope and a sensor, which comprises a bearing outer ring mechanism 1, a bearing inner ring 2, a bearing retainer mechanism 3 and a steel ball 4, wherein the bearing inner ring 2 is clamped inside the bearing outer ring mechanism 1; the bearing retainer mechanism 3 is welded on the outer side of the bearing inner ring 2 and is positioned between the bearing outer ring mechanism 1 and the bearing inner ring 2; the steel balls 4 are a plurality of and are embedded on the circumference of the bearing retainer mechanism 3.

The bearing outer ring mechanism 1 comprises a bearing outer ring body 11, a groove 12, an inner surface 13 and a chamfer 14, wherein the inner surface 13 is arranged on the inner side of the bearing outer ring body 11; the groove 12 is formed in the middle of the inner side of the bearing outer ring body 11; the two chamfers 14 are arranged on two sides of the bearing outer ring body 11.

The inner surface 13 is conical; the chamfer 14 is 3mm multiplied by 45 degrees in size; the size of the groove 12 is matched with that of the steel ball 4; the bearing outer ring body 11 is annular; the inner surface 13, the chamfer 14 and the bearing cup body 11 are provided as one piece.

The bearing retainer mechanism 3 comprises a bearing retainer body 31, a through hole 32 and a support rod 33, wherein the bearing retainer body 31 is positioned between the bearing outer ring mechanism 1 and the bearing inner ring 2; a plurality of support rods 33 are adopted, the upper ends of the support rods are welded on the inner side of the bearing retainer body 31, and the lower ends of the support rods are welded on the outer side of the bearing inner ring 2; the plurality of through holes 32 are provided on the circumference of the bearing holder body 31.

The bearing retainer body 31 is in a ring shape, and is made of polyimide specifically; the size of the through hole 32 is matched with that of the steel ball 4, the polyimide is resistant to high temperature of more than 400 ℃ and has high insulation, the bearing retainer body 31 is made of polyimide, the material use standard of a special bearing is met, and the purpose of prolonging the service life of the bearing is achieved.

The bearing outer ring mechanism 1, the bearing inner ring 2 and the steel ball 4 are made of G9Cr18 and G9Cr18, so that the rated load of the bearing is improved, the bearing is prevented from running in an overload mode, the fatigue of the bearing in the running process is reduced, and the bearing is guaranteed to run stably and efficiently.

Principle of operation

In the utility model, the inner surface 13 is conical, the radial force received by the bearing outer ring body 11 is dispersed in the bearing operation process and is converted into radial force and axial force, the phenomenon that the bearing outer ring body 11 is deformed due to overlarge radial force is avoided, the supporting rod 33 is arranged between the bearing retainer body 31 and the bearing inner ring 2, the bearing retainer body 31 is fixed at the outer side of the bearing inner ring 2, the phenomenon that the bearing retainer body 31 shakes in the bearing operation process is prevented, the abrasion of the bearing is reduced, the stability of the bearing is improved, the polyimide is resistant to high temperature of more than 400 ℃, the high insulation property is achieved, the bearing retainer body 31 is made of polyimide material, the material use standard of a special bearing is met, the purpose of prolonging the service life of the bearing is achieved, the bearing outer ring mechanism 1 is characterized in that the bearing inner ring 2 and the steel ball 4 are made of G9Cr18, the bearing can not run under an overload condition, the fatigue degree of the bearing in the running process is reduced, and the stable and efficient running of the bearing is ensured.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. Aviation gyroscope and sensor special bearing, its characterized in that: the bearing comprises a bearing outer ring mechanism (1), a bearing inner ring (2), a bearing retainer mechanism (3) and a steel ball (4), wherein the bearing inner ring (2) is clamped in the bearing outer ring mechanism (1); the bearing retainer mechanism (3) is welded on the outer side of the bearing inner ring (2) and is positioned between the bearing outer ring mechanism (1) and the bearing inner ring (2); the steel balls (4) are multiple and are embedded on the circumference of the bearing retainer mechanism (3).

2. The aerospace gyroscope and sensor specific bearing of claim 1, wherein: the bearing outer ring mechanism (1) comprises a bearing outer ring body (11), a groove (12), an inner surface (13) and a chamfer (14), wherein the inner surface (13) is arranged on the inner side of the bearing outer ring body (11); the groove (12) is formed in the middle of the inner side of the bearing outer ring body (11); the two chamfers (14) are arranged on two sides of the bearing outer ring body (11).

3. The aerospace gyroscope and sensor specific bearing of claim 2, wherein: the inner surface (13) is conical; the chamfer (14) has a dimension of 3mm x 45 °; the size of the groove (12) is matched with that of the steel ball (4); the bearing outer ring body (11) is annular; the inner surface (13), the chamfer (14) and the bearing outer ring body (11) are integrated.

4. The aerospace gyroscope and sensor specific bearing of claim 1, wherein: the bearing retainer mechanism (3) comprises a bearing retainer body (31), a through hole (32) and a support rod (33), wherein the bearing retainer body (31) is positioned between the bearing outer ring mechanism (1) and the bearing inner ring (2); the upper ends of the support rods (33) are welded on the inner side of the bearing retainer body (31), and the lower ends of the support rods are welded on the outer side of the bearing inner ring (2); the through holes (32) are arranged on the circumference of the bearing retainer body (31).

5. The aerospace gyroscope and sensor specific bearing of claim 4, wherein: the bearing retainer body (31) is in a ring shape and is made of polyimide specifically; the size of the through hole (32) is matched with that of the steel ball (4).

6. The aerospace gyroscope and sensor specific bearing of claim 1, wherein: and the bearing outer ring mechanism (1), the bearing inner ring (2) and the steel ball (4) are made of G9Cr 18.