CN213022212U - Upper guide device and vibrating table for assisting moving coil - Google Patents
Upper guide device and vibrating table for assisting moving coil Download PDFInfo
- Publication number
- CN213022212U CN213022212U CN202021991733.3U CN202021991733U CN213022212U CN 213022212 U CN213022212 U CN 213022212U CN 202021991733 U CN202021991733 U CN 202021991733U CN 213022212 U CN213022212 U CN 213022212U
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- bearing
- moving coil
- upper guide
- connecting portion
- auxiliary moving
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Abstract
The utility model discloses an upper guiding device and a vibrating table of an auxiliary moving coil, which comprises a plurality of connecting pieces and a guiding mechanism corresponding to the connecting pieces, wherein the connecting pieces are fixed with a moving coil framework, and a plurality of connecting pieces are arranged around the moving coil framework in an evenly distributed manner; the guide mechanism comprises a bearing, and the bearing sleeve is arranged outside the connecting piece and used for limiting the rotary motion of the moving coil framework. The utility model discloses can restrict the direction of motion of movable coil, precision when improving the shaking table test.
Description
Technical Field
The utility model relates to a shaking table equipment field, concretely relates to last guider and shaking table of supplementary movable coil.
Background
The vibration table is mainly used for detecting the acceleration of the accelerometer in the axial motion direction, so that when the moving coil is required to be excited and vibrated in the vibration table, only the axial displacement is generated, and unnecessary transverse motion is not generated. In the prior art, the acceleration vibration table generally supports the moving coil assembly in different modes such as roller type symmetrical distribution, combination of flexible materials and rigid materials and the like, so that unnecessary transverse movement is easily generated, and particularly, when the resonant frequency of the moving coil and a flexible spring is close, the moving coil can bend and swing, and further large transverse movement can be generated. The lateral movement can cause the accelerometer to detect an unnecessary value, thereby causing a larger calibration error and influencing the calibration precision of the accelerometer.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an upper guiding device and shaking table of supplementary movable coil, its direction of motion that can restrict the movable coil improves the precision when the shaking table test.
In order to solve the technical problem, the utility model provides an upper guide device of an auxiliary moving coil, which comprises a plurality of connecting pieces and a guide mechanism corresponding to the connecting pieces, wherein the connecting pieces are fixed with a moving coil framework, and the connecting pieces are uniformly distributed around the moving coil framework; the guide mechanism comprises a bearing, and the bearing sleeve is arranged outside the connecting piece and used for limiting the rotary motion of the moving coil framework.
Further, the connecting piece comprises a first connecting part and a second connecting part, and the first connecting part and the second connecting part are vertically connected; the first connecting portion with the moving coil skeleton is fixed, the second connecting portion wear to establish in the bearing.
Further, the first connecting portion and the second connecting portion are detachably connected.
Furthermore, the cross section of the connecting piece, which is used for being matched with the bearing, is polygonal or elliptical.
Further, the bearing comprises a hydraulic bearing, the hydraulic bearing comprises an oil inlet and an oil outlet, and an oil film is formed between the hydraulic bearing and the connecting piece.
Further, the precision of clearance fit of the connecting piece and the hydraulic bearing is 8-15 μm.
Further, be provided with the sealing washer on the connecting piece, the sealing washer with the hydraulic bearing laminating.
Further, the bearing includes an air bearing, the air bearing includes an air inlet and an air outlet, and the air bearing and the connecting member are formed with an air film.
Further, the precision of the clearance fit of the connecting piece and the air bearing is 8-15 μm.
Another object of the present invention is to provide a vibration table, which comprises the above upper guiding device for the auxiliary moving coil.
The utility model has the advantages that:
the bearing and the connecting piece are arranged correspondingly, and the bearing is sleeved outside the connecting piece, so that the movement direction of the connecting piece is limited by the bearing; the connecting piece is arranged in the bearing in a penetrating manner, so that the moving coil cannot rotate, and the rotating motion of the vibration table is avoided; in addition, the connecting piece that the symmetry set up is applyed the effort for moving coil skeleton unanimously for the shaking table can not appear toppling at the in-process of vibration test, thereby has guaranteed vibration test's precision and stability.
Drawings
FIG. 1 is a schematic diagram of the hydraulic bearing, the connecting member and the moving coil frame of the present invention;
FIG. 2 is a schematic view of a fluid bearing and a connector according to the present invention;
FIG. 3 is a schematic view of the air bearing, the connecting member and the moving coil bobbin of the present invention;
figure 4 is a schematic view of the air bearing and connector of the present invention.
The reference numbers in the figures illustrate: 1. a connecting member; 11. a first connection portion; 12. a second connecting portion; 2. a hydraulic bearing; 21. an oil inlet; 22. an oil outlet; 23. a seal ring; 3. an air bearing; 31. an air inlet; 32. an air outlet; 4. and a moving coil framework.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1 to 4, an embodiment of an upper guiding device for an auxiliary moving coil of the present invention includes a plurality of connecting members 1 and a plurality of guiding mechanisms, wherein the guiding mechanisms and the connecting members 1 are correspondingly disposed, so as to limit the moving direction of the connecting members 1 by using the guiding mechanisms. Connecting piece 1 and moving coil skeleton 4's lateral wall fixed connection to whole connecting piece 1 all sets up about 4 equipartitions of moving coil skeleton, thereby guarantees that connecting piece 1 can the equipartition setting in the power of acting on moving coil skeleton 4. Two sets of connecting pieces 1 are arranged in the application, and the two connecting pieces 1 are symmetrically distributed about the moving coil framework 4.
The guide mechanism comprises a bearing, the bearing is arranged corresponding to the connecting piece 1, and the bearing is sleeved outside the connecting piece 1, so that the movement direction of the connecting piece 1 is limited by the bearing. For example, when a vibration test in the vertical direction is performed, the moving coil framework 4 drives the connecting piece 1 to move in the vertical direction, and the bearing sleeved outside the connecting piece 1 can limit the connecting piece 1, so that the transverse movement of the connecting piece 1 and the vibration table is avoided. Simultaneously about connecting piece 1 and the bearing of 4 equipartitions settings of moving coil skeleton to because connecting piece 1 wears to establish in the inside of bearing, make the moving coil can not take place rotatoryly, thereby avoid the shaking table rotary motion to appear. In addition, the acting force applied to the moving coil framework 4 by the connecting pieces 1 which are symmetrically arranged is consistent, so that the vibrating table cannot overturn in the vibration test process, and the precision and the stability of the vibration test are ensured.
The connector 1 includes a first connection portion 11 and a second connection portion 12, wherein the first connection portion 11 and the second connection portion 12 are vertically connected. Wherein, first connecting portion 11 and moving coil skeleton 4 fixed connection, second connecting portion 12 can wear to establish inside the bearing. The first connecting part 11 and the second connecting part 12 which are vertically connected can prevent the connecting piece 1 from generating force in an inclined direction, so that the stability of the joint of the first connecting part 11 and the moving coil framework 4 is ensured. In addition, the first connecting portion 11 and the second connecting portion 12 are detachably connected, and in the embodiment, the first connecting portion 11 is fixed with the second connecting portion 12 by a fastening screw. The connecting piece 1 which is arranged in a split way is used, so that the guide device is convenient to mount and dismount.
The cross section of the connecting piece 1 for matching with the bearing is arranged in a polygon or an ellipse, and the cross section of the second connecting part 12 is arranged in a polygon or an ellipse in the embodiment. When the bearing is fixed with the frame through a fastening screw, the connecting piece 1 and the bearing are matched for use, so that the rotation of the connecting piece 1 in the bearing can be limited by utilizing a polygonal or elliptical structure, the rotating motion of the moving coil and the vibrating table can be further limited, and the precision of vibration testing is ensured. Therefore, the first connecting portion 11 and the second connecting portion 12 which are separately arranged are utilized in the application, the processing requirement on the first connecting portion 11 can be reduced, meanwhile, special processing treatment can be conveniently carried out on the second connecting portion 12, the processing cost is reduced, and the processing efficiency can also be improved.
The bearing comprises a hydraulic bearing 2, the hydraulic bearing 2 comprises an oil inlet 21 and an oil outlet 22, and an oil film is formed on the hydraulic bearing 2 and the connecting piece 1. Hydraulic oil flows into a gap between the connecting piece 1 and the bearing inner ring through the oil inlet 21, gradually forms an oil film and is coated outside the connecting piece 1; then, the hydraulic bearing 2 is used to restrict the moving direction of the link 1 and the moving coil by controlling the oil pressure so that the link 1 is suspended inside the bearing. In addition, the adjustment of the guide rigidity can be realized by controlling the magnitude of the oil pressure. When the mass of the piece to be tested is larger or the bearing is arranged on a vibrating table with larger test tonnage, the hydraulic bearing 2 is preferably selected as the bearing.
In addition, the precision of clearance fit of the connecting piece 1 and the hydraulic bearing 2 is 8-15 microns so as to ensure the thickness of an oil film, enable the connecting piece 1 to be suspended in the bearing, reduce the resistance of the connecting piece 1 during moving, and simultaneously facilitate the control of the oil film through the size of oil pressure so as to adjust the guiding rigidity and improve the anti-overturning performance of the vibrating table.
The connecting piece 1 is sleeved with a sealing ring 23, and the sealing ring 23 is attached to the hydraulic bearing 2, so that the sealing performance of the hydraulic bearing 2 can be improved. In this embodiment, the seal rings 23 are provided above and below the fluid bearing 2.
In another embodiment the bearing comprises an air bearing 3, said air bearing 3 comprising an air inlet 31 and an air outlet 32, and the air bearing 3 and the connection piece 1 are formed with an air film. Gas flows into a gap between the connecting piece 1 and the bearing inner ring through the gas inlet 31, and a gas film is gradually formed and coated outside the connecting piece 1; then, the connecting member 1 is suspended inside the bearing by controlling the air pressure, so that the moving direction of the connecting member 1 and the moving coil can be restricted by the air bearing 3. In addition, the guiding rigidity can be adjusted by controlling the air pressure. When the mass of the piece to be tested is small or the bearing is arranged on a vibration table with small test tonnage, the bearing is preferably an air bearing 3.
In addition, the precision of clearance fit of the connecting piece 1 and the air bearing 3 is 8-15 μm, so that the thickness of the air film is ensured, the connecting piece 1 is suspended in the bearing, the resistance of the connecting piece 1 during moving is reduced, and meanwhile, the air film is controlled through the size of air pressure, so that the guiding rigidity is adjusted, and the anti-overturning performance of the vibrating table is improved.
The utility model provides a shaking table, includes foretell supplementary movable coil's last guider, utilizes last guider can improve the anti-rotation performance and the anti-overturning performance of shaking table, precision and stability when having improved the shaking table vibration test.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (10)
1. The upper guide device of the auxiliary moving coil is characterized by comprising a plurality of connecting pieces and a guide mechanism corresponding to the connecting pieces, wherein the connecting pieces are fixed with a moving coil framework, and the connecting pieces are uniformly distributed around the moving coil framework; the guide mechanism comprises a bearing, and the bearing sleeve is arranged outside the connecting piece and used for limiting the rotary motion of the moving coil framework.
2. The upper guide apparatus of an auxiliary moving coil as claimed in claim 1, wherein the connecting member includes a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion being vertically connected; the first connecting portion with the moving coil skeleton is fixed, the second connecting portion wear to establish in the bearing.
3. The upper guide of an auxiliary moving coil as set forth in claim 2, wherein said first connecting portion and said second connecting portion are detachably connected.
4. The upper guide apparatus of an auxiliary moving coil as claimed in claim 1, wherein the cross section of the connecting member for fitting the bearing is polygonal or elliptical.
5. The upper guide apparatus of an auxiliary moving coil as set forth in claim 1, wherein said bearing comprises a fluid bearing, said fluid bearing includes an oil inlet and an oil outlet, and said fluid bearing and said connecting member are formed with an oil film.
6. The upper guide of an auxiliary moving coil as set forth in claim 5, wherein the accuracy of the clearance fit of said connecting member and said fluid bearing is 8 μm to 15 μm.
7. The upper guide apparatus of an auxiliary moving coil as claimed in claim 5, wherein a sealing ring is provided on the connecting member, and the sealing ring is engaged with the hydraulic bearing.
8. The upper guide of an auxiliary moving coil as set forth in claim 1, wherein said bearing includes an air bearing including an air inlet and an air outlet, and said air bearing and said connecting member are formed with an air film.
9. The upper guide of an auxiliary moving coil as set forth in claim 8, wherein the precision of the clearance fit of said connecting member and said air bearing is 8 μm to 15 μm.
10. A vibration table comprising the upper guide of the auxiliary moving coil as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021991733.3U CN213022212U (en) | 2020-09-11 | 2020-09-11 | Upper guide device and vibrating table for assisting moving coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021991733.3U CN213022212U (en) | 2020-09-11 | 2020-09-11 | Upper guide device and vibrating table for assisting moving coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213022212U true CN213022212U (en) | 2021-04-20 |
Family
ID=75475901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021991733.3U Active CN213022212U (en) | 2020-09-11 | 2020-09-11 | Upper guide device and vibrating table for assisting moving coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213022212U (en) |
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2020
- 2020-09-11 CN CN202021991733.3U patent/CN213022212U/en active Active
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