CN101334071A - Axial elastic damper for protecting bearing and use method thereof - Google Patents
Axial elastic damper for protecting bearing and use method thereof Download PDFInfo
- Publication number
- CN101334071A CN101334071A CNA200810022797XA CN200810022797A CN101334071A CN 101334071 A CN101334071 A CN 101334071A CN A200810022797X A CNA200810022797X A CN A200810022797XA CN 200810022797 A CN200810022797 A CN 200810022797A CN 101334071 A CN101334071 A CN 101334071A
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- China
- Prior art keywords
- spring sheet
- bearing
- axial elastic
- elastic damper
- ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 229920003266 Leaf® Polymers 0.000 abstract 6
- 238000013016 damping Methods 0.000 abstract 4
- 230000000703 anti-shock Effects 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 230000003116 impacting effect Effects 0.000 description 3
- 238000005339 levitation Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The invention relates to an axial elastic damper and the operation method thereof used for protecting bearings. The axial elastic damper can absorb the axial vibration and shock. The damper comprises an annular spring leaf body (2) and a damping strip (4); wherein spring leafs (5) which are upwarped along the axial direction are evenly distributed on an end surface where the annular spring leaf body (2) is contacted with the inner ring of a protecting bearing (1), and the damping strip (4) is positioned among the spring leafs (5) and the annular spring leaf body (2). A set of axial elastic dampers is respectively arranged among the inner ring of the protecting bearing (1) and the two end surfaces of an axle (6), when the axle (6) falls onto the protecting bearing (1) at high speed, most of vibration and impact energy generated in the axial direction during the fall-off of the axle at high speed is absorbed by utilizing the elasticity of the spring leafs (5) and the damping of the damping strip (4), thus the anti-vibration and anti-shock capabilities and the reliability of the protecting bearing (1) can be enhanced.
Description
Technical field
The invention provides a kind of axial elastic damper and using method thereof, can be used in the protection bearing of magnetic levitation bearing system, absorb when axle and drop at a high speed on the protection bearing, can improve the life-span and the reliability of protection bearing in the vibration and the impact energy that axially produce.
Background technique
In magnetic levitation bearing system; reliability and security in order to ensure system; generally need a cover protection bearing (to be also referred to as auxiliary bearing; or replacement bearing; or emergent bearing); its main purpose is the axle of temporary support high speed rotating when magnetic suspension bearing lost efficacy, and protection magnetic suspension equipment is not damaged.Because the rotating speed of magnetic suspension bearing is generally very high; when dropping on the protection bearing at a high speed, axle can produce very big vibration and impact; the subject matter that exists is that existing protection bearing opposing vibration is relatively poor with the ability of impacting at present, the protection bearing usually takes place burn out and the serious accident of damage equipment.
Protect on the bearing in the vibration and the impact energy that axially produce in order to absorb when axle drops at a high speed; disclosed patent application (application number: 200710192282.X) be design one cover elastic damper between the outer ring of protecting bearing and support hole; the deficiency of this design is axle inner ring of surge protection bearing at first when falling, and inner ring passes to elastic damper with the outer ring of impact energy by rolling element, protection bearing again.That is to say that the protection bearing just had been subjected to very big vibration and impact before elastic damper work, this design protection bearing still is damaged than being easier to.
Summary of the invention
The objective of the invention is; problem at the prior art existence; a kind of axial elastic damper and using method that is used to protect bearing is provided; can axle with the protection bearing contact in the absorption vibratory impulse energy; elastic damper is worked simultaneously with the protection bearing; can improve protection bearing opposing vibration and the ability and the reliability of impacting better, to satisfy the needs of high-speed magnetic levitation bearing arrangement.
A kind of axial elastic damper that is used to protect bearing is used for absorption axes to the vibratory impulse energy, and it is characterized in that: this damper comprises ring-spring sheet body and amortisseur bar; The end face that wherein said ring-spring sheet body contacts with the protection bearing inner race is evenly distributed with the spring sheet of end perk vertically, and described amortisseur bar is between above-mentioned spring sheet and above-mentioned ring-spring sheet body.
The opening direction of above-mentioned spring sheet can be along the circumferential direction, also can be radially, and ring-spring that also can as a whole perk vertically.
The present invention mainly forms an axial elastic damper by the spring sheet and the amortisseur bar of ring-spring sheet body, perk vertically, and the height of spring sheet perk is less than the axial protection gap between protection bearing and the axle.Between two end faces of the inner ring of protecting bearing and axle, respectively design the axial elastic damper of a cover; when axle drops on the protection bearing at a high speed; the inner ring of protection bearing at first contacts with the spring sheet of perk in one of them axial elastic damper; spring sheet is oppressed the amortisseur bar distortion again in the process of distortion; absorbed and most ofly dropped at a high speed on the protection bearing in the vibration and the impact energy that axially produce when axle, therefore can improve protection bearing opposing vibration and ability and the reliability of impacting.
Description of drawings
Fig. 1 is a kind of axial elastic damper of the present invention (opening direction of spring sheet along the circumferential direction) and protection bearing, a schematic representation that is assembled together.
Fig. 2 is that a kind of axial elastic damper of the present invention (opening direction of spring sheet along the circumferential direction) along the circumferential direction launches schematic representation.
Fig. 3 is another kind of axial elastic damper of the present invention (opening direction of spring sheet radially) and protection bearing, a schematic representation that is assembled together.
Number in the figure title: 1 protection bearing, 2 ring-spring sheet bodies, 3 nuts, 4 amortisseur bars, 5 spring sheets, 6, A axial direction, R radial direction.
Embodiment
Below in conjunction with accompanying drawing composition of the present invention, working principle and structural design are described in further detail.
Shown in Figure 1 is a kind of axial elastic damper of the present invention (opening direction of spring sheet along the circumferential direction) and protection bearing; the schematic representation that axle is assembled together; between two end faces of the inner ring of protecting bearing 1 and axle 6, respectively designed the axial elastic damper of a cover (by 2; 4; 5 form); when axle 6 drops on the protection bearing 1 at a high speed; the inner ring of protection bearing 1 at first contacts with the spring sheet 5 of perk in one of them axial elastic damper; spring sheet 5 is oppressed amortisseur bar 4 distortion again in the process of distortion; acting by spring sheet 5 and amortisseur bar 4 has absorbed most of vibration and impact energy that produces in axially (coordinate A direction) when axle falls at a high speed, therefore can improve the ability and the reliability of protection bearing opposing vibration and impact.Axial elastic damper among Fig. 1 is placed amortisseur bar 4 as shown in Figure 2 between the spring sheet 5 of perk and ring-spring sheet body 2, the opening direction of spring sheet is along the circumferential direction.
Fig. 3 is that (opening direction of spring sheet radially for another kind of axial elastic damper of the present invention, be coordinate R direction) and protect bearing, a schematic representation that is assembled together, the difference of Fig. 3 and Fig. 1 is the opening direction of spring sheet 5, in Fig. 3, the opening direction of spring sheet 5 is radially, spring sheet 5 can be the annulus of an integral body perk vertically, also can be the spring sheet of a plurality of (3-100) perk vertically, and amortisseur bar 4 generally can be the ring-type amortisseur bar of an integral body; In Fig. 1, the opening direction of spring sheet 5 is along the circumferential direction, and spring sheet 5 is spring sheets of a plurality of (3-100) perk vertically, and amortisseur bar 4 generally is a plurality of (3-100) independently strip amortisseur bar.
Claims (8)
1, a kind of axial elastic damper that is used to protect bearing is used for absorption axes to the vibratory impulse energy, it is characterized in that: this damper comprises ring-spring sheet body (2) and amortisseur bar (4); The end face that wherein said ring-spring sheet body (2) contacts with protection bearing (1) inner ring is evenly distributed with the spring sheet (5) of perk vertically, and described amortisseur bar (4) is positioned between above-mentioned spring sheet (5) and the above-mentioned ring-spring sheet body (2).
2, the axial elastic damper that is used to protect bearing according to claim 1 is characterized in that: the opening direction of described spring sheet (5) along the circumferential direction.
3, the axial elastic damper that is used to protect bearing according to claim 1 is characterized in that: the opening direction of described spring sheet (5) radially.
4, according to claim 2 or the 3 described axial elastic dampers that are used to protect bearing, it is characterized in that: described spring sheet (5) evenly distributes.
5, the axial elastic damper that is used to protect bearing according to claim 3 is characterized in that: the ring-type amortisseur bar that described amortisseur bar (4) is as a whole.
6, the axial elastic damper that is used to protect bearing according to claim 1 is characterized in that: the ring-spring of the as a whole perk vertically of described spring sheet (5).
7, the axial elastic damper that is used to protect bearing according to claim 6 is characterized in that: the ring-type amortisseur bar that described amortisseur bar (4) is as a whole.
8, the using method that is used to protect the axial elastic damper of bearing according to claim 1; it is characterized in that: the axial elastic damper of a cover respectively is installed between two end faces of the inner ring of protecting bearing and axle; when axle drops on the protection bearing at a high speed; the inner ring of protection bearing at first contacts with the spring sheet of perk in one of them axial elastic damper; spring sheet is oppressed amortisseur bar again and is out of shape in the process of distortion, absorbed major part and protected on the bearing in axial vibration and the impact energy that produces when axle drops at a high speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810022797XA CN101334071A (en) | 2008-07-22 | 2008-07-22 | Axial elastic damper for protecting bearing and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810022797XA CN101334071A (en) | 2008-07-22 | 2008-07-22 | Axial elastic damper for protecting bearing and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101334071A true CN101334071A (en) | 2008-12-31 |
Family
ID=40196865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810022797XA Pending CN101334071A (en) | 2008-07-22 | 2008-07-22 | Axial elastic damper for protecting bearing and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101334071A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168719A (en) * | 2011-04-21 | 2011-08-31 | 南京磁谷科技有限公司 | Axial protective bearing |
| WO2021139292A1 (en) * | 2020-01-07 | 2021-07-15 | 珠海格力电器股份有限公司 | Axial protection system for magnetic suspension bearing and rotating shaft assembly |
| CN114215782A (en) * | 2021-12-08 | 2022-03-22 | 苏州中科科仪技术发展有限公司 | Spindle structure of magnetic suspension molecular pump and magnetic suspension molecular pump |
-
2008
- 2008-07-22 CN CNA200810022797XA patent/CN101334071A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168719A (en) * | 2011-04-21 | 2011-08-31 | 南京磁谷科技有限公司 | Axial protective bearing |
| WO2021139292A1 (en) * | 2020-01-07 | 2021-07-15 | 珠海格力电器股份有限公司 | Axial protection system for magnetic suspension bearing and rotating shaft assembly |
| CN114215782A (en) * | 2021-12-08 | 2022-03-22 | 苏州中科科仪技术发展有限公司 | Spindle structure of magnetic suspension molecular pump and magnetic suspension molecular pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081231 |