CN207339506U - A kind of bearing block - Google Patents
A kind of bearing block Download PDFInfo
- Publication number
- CN207339506U CN207339506U CN201721272627.8U CN201721272627U CN207339506U CN 207339506 U CN207339506 U CN 207339506U CN 201721272627 U CN201721272627 U CN 201721272627U CN 207339506 U CN207339506 U CN 207339506U
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- pedestal
- cylinder pedestal
- rotor
- bearing block
- bearing seat
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Abstract
The typical machine Assembly part in a kind of inertial navigation system structure is the utility model is related to, is specially a kind of bearing block.Including axial connection and coaxial bearing seat and rotor pedestal, the bearing seat is equipped with the through hole that diameter is identical and communicates with rotor pedestal center；The bearing seat includes the first cylinder pedestal, the second cylinder pedestal, outside cylinder pedestal successively vertically, and bearing seat and the rotor pedestal is made by aluminium silicon carbide.The utility model is compact-sized, light weight, and easy to process, installation and removal, production efficiency is high, reduces manufacturing cost and use cost, is particularly suitable for inertial navigation system use.By by bearing seat and rotor pedestal integration, reduce both and Fit dimension chain be installed, reduce bearing block structure design accuracy requirement, reduce processing and assembly difficulty, improve the rotating stability of frame.
Description
Technical field
The typical machine Assembly part in a kind of inertial navigation system structure is the utility model is related to, is specially a kind of bearing
Seat.
Background technology
Inertial navigation system of the prior art, to improve wartime efficiency, saves the time, more and more using " three certainly "
Used group (self-calibration, autoregistration, Autonomous test) structure type, realizes the mark for completing measurement model parameter under state free of demolition on bullet
It is fixed." three certainly " used group uses an integrated design scheme for double freedom rotating mechanism, higher to obtain the rotating mechanism
Transmission efficiency, it usually needs by bearings on matrix rotating frame；At the same time in order to compact-sized, this is just needed in frame
Upper installation bearing block, is used to support bearing.Since bearing block is installed on the inside of used set product, dismounting, replace inconvenience, often
Dismounting can influence rotation and the positioning accuracy of product.
Due to the function of inertial navigation system and the particularity of use condition, certain spy is required to structural material
Different property, it is more stringent compared to general industrial instrument.Since inertial navigation system is mounted with the accurate inertia of planform complexity on bullet
Device, and lighting to system, miniaturization, high accuracy, high stability have higher requirements, therefore do not require nothing more than material tool
There is excellent mechanical property, stable Wuli-Shili-Renli system approach, also requiring material to have, density is small, specific stiffness is high, size is steady
Qualitative good, Thermal conductivity and processability.
The material that the bearing block class formation part of Strapdown Inertial Navigation System mainly uses on country's bullet at present is structural alloy steel
(such as 45,40Cr, 30Cr).The corrosion resistance of structural alloy steel is poor, and bearing block is statically placed in after the surface treatment that blacks
Damp and hot or salt mist environment still can produce iron rust after for a period of time, and serious security risk is brought to system；Structural alloy steel
Material is retentive material, supporting structure of the bearing block as torque motor rotor, and part can keep stronger remanent magnetism, influence to lead
Boat precision.
Many inertial navigation systems are harsh to volume weight requirement, select structural alloy steel to be difficult to meet system high-performance, lightweight
Change and require.To meet system dimension, the realization of weight indicator and environmental suitability requirement, one kind is found compared with structural alloy steel
Density is small, specific stiffness is high, and is highly desirable with high reliability, stability, the new material of good processability.
Utility model content
The purpose of this utility model is exactly to solve the above problem existing in the prior art, there is provided a kind of bearing block, is meeting
While stiffness, simple in structure, compact, light weight, easily fabricated, installation and removal, production efficiency is high, is particularly suitable for being used to
Property navigation system use.
The technical solution of the utility model is a kind of bearing block, including axial connection and coaxial bearing seat and motor
Rotor pedestal, the bearing seat are equipped with the through hole that diameter is identical and communicates with rotor pedestal center；The bearing seat
Include the first cylinder pedestal, the second cylinder pedestal, outside cylinder pedestal successively vertically, the first cylinder pedestal turns close to motor
Stroma body, the outside diameter of the first cylinder pedestal are less than the outside diameter of the second cylinder pedestal, and the outside diameter of outside cylinder pedestal is less than first
Cylinder pedestal；The second cylinder pedestal be equipped with it is multiple along the equally distributed connecting hole of central shaft, on the first cylinder pedestal
It is more than the counterbore of connecting hole equipped with the coaxial and diameter with connecting hole；Bearing seat and the rotor pedestal is carbonized by aluminium
Silicon is made.
Preferably, the periphery of the second cylinder pedestal is equipped with the shaft shoulder.
Preferably, the periphery of the outside cylinder pedestal is equipped with positioning convex platform.
Preferably, the rotor pedestal is divided into three sections in the axial direction, and the rotor pedestal periphery of interlude is set
Put rectangular recess.
Preferably, the first escape is equipped between the outside cylinder pedestal and the second cylinder pedestal.
Preferably, the second escape is equipped between the first cylinder pedestal and rotor pedestal.
The beneficial effects of the utility model are：
1st, the utility model is compact-sized, light weight, and easy to process, installation and removal, production efficiency is high, reduces manufacture
And use cost, it is particularly suitable for inertial navigation system use.
2nd, by by bearing seat and rotor pedestal integration, reduce both and Fit dimension chain be installed, reduce
The design accuracy requirement of bearing block structure, reduces processing and assembly difficulty, improves the rotating stability of frame.
3rd, by using novel aluminum carbofrax material, the stability of bearing block, bearing capacity and load-bearing rigidity, resistance to height are improved
It is warm, wear-resisting, corrosion-resistant, heat conductivility is high, chemical stability is good, no rusty stain or other impurity produce, therefore will not be in product
Portion's cleanliness factor has an impact.
4th, aluminium silicon carbide is diamagnetic material, after on frame, although rotor makes for strong magnetic material,
But not bearing block is magnetized and used group is internally formed the magnetic field of complexity, advantageously ensures that Product Precision.
Brief description of the drawings
Fig. 1 is the structure diagram of bearing block described in the utility model；
Fig. 2 is the sectional view of Fig. 1.
Embodiment
In order to be better understood from the utility model, it is described in detail below in conjunction with attached drawing.As shown in Figure 1 and Figure 2, one
Kind bearing block, including axial connection and coaxial bearing seat 1 and rotor pedestal 2, bearing seat 1 and rotor pedestal
2 centers are equipped with the through hole 16 that diameter is identical and communicates；The bearing seat includes the first cylinder pedestal 19, second successively vertically
Cylinder pedestal 18, outside cylinder pedestal 17, the first cylinder pedestal 19 is close to rotor pedestal 2, the first cylinder pedestal
19 outside diameter is less than the outside diameter of the second cylinder pedestal 18, and the outside diameter of outside cylinder pedestal 17 is less than the first cylinder pedestal 19；Described
Two cylinder pedestals 18 are equipped with being connected equipped with multiple along the equally distributed connecting hole 9 of central shaft, the first cylinder pedestal 19
Hole 9 is coaxial and diameter is more than the counterbore 10 of connecting hole 9；Bearing seat and the rotor pedestal 2 is made by aluminium silicon carbide.
The periphery of second cylinder pedestal 18 is equipped with the shaft shoulder 5, and the periphery of outside cylinder pedestal 17 is equipped with positioning convex platform 7.
For installing the external cylindrical surface 3 of bearing inner race, the inner side of external cylindrical surface 3 is equipped with bearing axial locating surface 4, and bearing is axial
The outside of positioning surface 4 is equipped with the shaft shoulder 5 that diameter is more than bearing top circle cylinder diameter, and 5 diameter of the shaft shoulder should be not more than in institute's installation bearing
The major diameter of circle, the right side of the shaft shoulder 5 position end face 6 for the connection of aluminium silicon carbide bearing block, and connection positioning end face 6 is revolved with used group
The mounting surface for turning frame coordinates, the axially position for aluminium silicon carbide bearing block；6 outside of connection positioning end face is equipped with perpendicular
Positioning convex platform 7, the circle end face 8 of the positioning convex platform 7 and the mounting hole of used group rotating frame use H7/h6 clearance fits,
Realize the radial positioning of aluminium silicon carbide bearing block.The connection positioning end face 6 is equipped with multiple connecting holes 9, uniformly divides around central shaft
Cloth, the axially inner side of the connecting hole 9 is equipped with the counterbore 10 for being more than connection bore dia with the diameter of connecting hole coaxial line, for pacifying
Fill the trip bolt of bearing block.According to the size of the utility model structure and the payload undertaken, the connecting hole
Quantity can be differed from 4,6 or 8.
3 axial height of external cylindrical surface should be less than bearing width so that bearing can realize axially position, and the end for passing through outside
Lid mounting surface 11, end cap is connected on this face, compresses bearing inner race.
Rotor pedestal 2 is divided into three sections in the axial direction, and the rotor pedestal periphery of interlude sets rectangular recess
13, glue is coated when being installed for rotor, rotor is firmly installed with bearing block.Rotor installs cylindrical surface 12
Both ends are respectively equipped with installation positioning surface 14, the axially position for rotor.
Rotor installation 12 axial height of cylindrical surface should be less than rotor width so that rotor can be realized
Axially position, and by the installation positioning surface in outside, end cap is connected on this face, clamping motor rotor.
The first escape 15, the first cylinder pedestal 19 and motor are equipped between 17 and second cylinder pedestal 18 of outside cylinder pedestal
The second escape 20 is equipped between rotor pedestal 2, it is ensured that back chipping when cylindrical surface is refined, reaches the required accuracy requirement.
The bearing block, including middle through hole 16, available for the transmission of rotating frame signal wire, disclosure satisfy that connecting portion
While the intensity requirement of position, and the stress of the connecting portion can be reduced, avoid damage caused by stress concentration, and can have
Imitate loss of weight.
Although above-mentioned be described the embodiment of utility model with reference to attached drawing, not to the utility model
The limitation of protection domain.On the basis of the technical solution of the utility model, those skilled in the art need not pay creativeness
The various sizes that working to make are changed or deformation is still within the scope of the present invention.
Claims (6)
1. a kind of bearing block, it is characterized in that, including axial connection and coaxial bearing seat (1) and rotor pedestal (2), institute
State bearing seat (1) and be equipped with the through hole (16) that diameter is identical and communicates with rotor pedestal (2) center；The bearing seat edge
It is axial to include the first cylinder pedestal (19), the second cylinder pedestal (18), outside cylinder pedestal (17), the first cylinder pedestal successively
(19) close to rotor pedestal (2), the outside diameter of the first cylinder pedestal (19) is less than the outside diameter of the second cylinder pedestal (18),
The outside diameter of outside cylinder pedestal (17) is less than the first cylinder pedestal (19)；The second cylinder pedestal (18) is equipped with multiple along central shaft
Equally distributed connecting hole (9), the first cylinder pedestal (19) is equipped with coaxial and diameter is more than connecting hole with connecting hole (9)
(9) counterbore (10)；The bearing seat (1) and rotor pedestal (2) are made by aluminium silicon carbide.
2. bearing block according to claim 1, it is characterized in that, the periphery of the second cylinder pedestal (18) is equipped with the shaft shoulder (5).
3. bearing block according to claim 1, it is characterized in that, the periphery of the outside cylinder pedestal 17 is equipped with positioning convex platform 7.
4. bearing block according to claim 1, it is characterized in that, the rotor pedestal (2) is divided into three sections in the axial direction,
The rotor pedestal periphery of interlude sets rectangular recess (13).
5. bearing block according to claim 1, it is characterized in that, the outside cylinder pedestal (17) and the second cylinder pedestal (18) it
Between be equipped with the first escape (15).
6. bearing block according to claim 1, it is characterized in that, the first cylinder pedestal (19) and rotor pedestal (2)
Between be equipped with the second escape (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721272627.8U CN207339506U (en) | 2017-09-29 | 2017-09-29 | A kind of bearing block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721272627.8U CN207339506U (en) | 2017-09-29 | 2017-09-29 | A kind of bearing block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207339506U true CN207339506U (en) | 2018-05-08 |
Family
ID=62366843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721272627.8U Active CN207339506U (en) | 2017-09-29 | 2017-09-29 | A kind of bearing block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207339506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111138198A (en) * | 2019-12-30 | 2020-05-12 | 珠海凯利得新材料有限公司 | Preparation method and application of aluminum silicon carbide composite material |
-
2017
- 2017-09-29 CN CN201721272627.8U patent/CN207339506U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111138198A (en) * | 2019-12-30 | 2020-05-12 | 珠海凯利得新材料有限公司 | Preparation method and application of aluminum silicon carbide composite material |
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