CN201401471Y - Wave shape variable pressure pretightening disc spring - Google Patents
Wave shape variable pressure pretightening disc spring Download PDFInfo
- Publication number
- CN201401471Y CN201401471Y CN2009200055456U CN200920005545U CN201401471Y CN 201401471 Y CN201401471 Y CN 201401471Y CN 2009200055456 U CN2009200055456 U CN 2009200055456U CN 200920005545 U CN200920005545 U CN 200920005545U CN 201401471 Y CN201401471 Y CN 201401471Y
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- waveform
- wave shape
- pretightening
- variable pressure
- shape variable
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- Expired - Lifetime
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Abstract
The utility model relates to a wave shape variable pressure pretightening disc spring, which is arranged at the connecting part of a bolt and a tightened element or the connecting part of the bolt anda sealing flange and is in a relative rest mode corresponding to a contact part. The utility model is characterized in that the wave shape variable pressure pretightening disc spring is a disc-shapedgasket; an inner hole with the uniform thickness and an outer circle form a conical surface; both the upper and the lower reverse surfaces are wave shape surfaces; in addition, each surface has at least two complete wave shapes; and each wave shape has the resilience. The wave shapes of the reverse surfaces of the wave shape variable pressure pretightening spring are sequentially and uniformly distributed in a staggered mode from the inner hole to the outer periphery.
Description
Technical field
The utility model relates to the joint that is used to be installed in bolt and fastener or sealing flange, and keeps static, the dish spring that has the compensation ability of elastic force and displacement simultaneously, particularly a kind of Waveform movable pressing pretightening dish spring with contact component.
Background technique
To the static packing ring that is installed in the joint of bolt and fastener or flange seal, the sectional shape that has of public use is complete plain washer, open washer and the pretension dish spring of rectangle at present.Complete plain washer does not have compensation performance; open washer just prevents the loosening of nut by the dislocation of opening; and pretension dish spring; though certain compensation performance is arranged, because sectional shape is a rectangle, after the initial pressing of pressure outside; do not possess secondary elastic force and overload protection ability; especially under the operating mode of serviceability temperature, pressure alternation, compensation ability is little, causes fatigue and inefficacy easily.Seal leakage is serious, seal failure because of the loss of pretightening force occurs for the loosening and flange seal that the existence of above shortcoming then causes fastener.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency; a kind of Waveform movable pressing pretightening dish spring is provided; it is on pretension dish spring sectional shape that changes and processing method; significantly improve the elastic force of pretension dish spring and the compensation ability scope of displacement; even under the operating mode of serviceability temperature, pressure alternation, possess the compensation ability and the overload protection ability of secondary elastic force and displacement, its compensation ability and scope are wideer; more effective assurance fastening force reliable, and the long-acting reliability of flange seal pretension effect.
Above-mentioned purpose of the present utility model is realized by following technological scheme: a kind of Waveform movable pressing pretightening dish spring, its thickness is even, become the conical surface between endoporus and the cylindrical, the phase back side is wavy surface up and down, and each face has waveform complete more than 1 at least, each waveform has resilience, and the waveform at the phase back side staggers evenly distributed successively to periphery from endoporus, top and bottom waveform direction unanimity.
Advantage of the present utility model and effect: Waveform movable pressing pretightening dish spring is placed the joint of bolt and fastener or sealing flange, and contact with fastener with nut.Under the effect of the pretightening force of bolt and nut, the initial taper of dish spring is driven plain, and produces corresponding resilience pretightening force, and the size of resilience pretightening force can be set according to the thickness between interior external diameter and the top and bottom.When overload takes place or under the operating mode of temperature, pressure alternation in tight power, be deformed extension with respect to the waveform of two surface of contact, and produce corresponding secondary work and push back elastic force, the size that pushes back elastic force of living can be set according to the width of waveform.Relative static between the top and bottom of Waveform movable pressing pretightening dish spring and two junction surfaces, under pretightening force, produce the pretension effect that first deformation power becomes, when tight power generation overload with under the operating mode of temperature, pressure alternation, waveform is deformed extension, the waveform that is deformed extension produces secondary deformation power thereupon and becomes, reliable with the fastening force that keeps fastened parts or flange, fastener bolt and nut are not loosening, and the long-acting reliability of flange seal pad pretension effect, also be significantly improving simultaneously to safety guarantee.Under the condition of identical interior external diameter, taper and thickness, the spring-back force that initial resilience pretightening force that produces and sectional shape are rectangle is suitable, is more than 2 times of rectangular cross-section maximum load but waveform is deformed the secondary force change that produces of extending.
Description of drawings
Fig. 1 is a plan view of the present utility model.
Fig. 2 is a schematic cross-section of the present utility model.
Fig. 3 is the utility model general structure schematic representation.
Embodiment
Referring to Fig. 3, Waveform movable pressing pretightening dish spring 3 places the joint of bolt 5 and flange 1, by tightening of bolt 5 and nut 2, and, the initial taper of dish spring 3 is driven plain, and contacts with clamp flange 1 with nut 2.And produce corresponding resilience pretightening force, realize that two sealing flanges 1,6 apply the sealing preload pressure to pad 4.When impacting force overload takes place or under the operating mode of temperature, pressure alternation, dish spring 3 is deformed extension with respect to the waveform of two surface of contact 1,2, and produce corresponding secondary work and push back elastic force.Waveform movable pressing pretightening dish spring 3 is relative static with two surface of contact 1,2, thereby realize that two adpting flanges, 1,6 fastening forces are reliable, clamping bolt 5 and nut 2 are loosening, and the long-acting reliability of gasket seal 4 effective sealing pretension effects, also are significantly improving safety guarantee simultaneously.
Claims (2)
1, a kind of Waveform movable pressing pretightening butterfly spring, be installed in the joint of bolt and fastener or flange seal, and it is relative with contact component static, described Waveform movable pressing pretightening butterfly spring is characterized in that, its thickness is even, endoporus becomes the conical surface with cylindrical, the phase back side is wavy surface up and down, and each face has waveform complete more than 1 at least, and each waveform has resilience.
2, Waveform movable pressing pretightening butterfly spring as claimed in claim 1 is characterized in that, the waveform at the phase back side staggers evenly distributed from endoporus to periphery successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200055456U CN201401471Y (en) | 2009-03-03 | 2009-03-03 | Wave shape variable pressure pretightening disc spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200055456U CN201401471Y (en) | 2009-03-03 | 2009-03-03 | Wave shape variable pressure pretightening disc spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201401471Y true CN201401471Y (en) | 2010-02-10 |
Family
ID=41661268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200055456U Expired - Lifetime CN201401471Y (en) | 2009-03-03 | 2009-03-03 | Wave shape variable pressure pretightening disc spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201401471Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166608A (en) * | 2010-12-28 | 2011-08-31 | 扬州核威碟形弹簧制造有限公司 | Method for processing III-group disc spring |
| CN102582470A (en) * | 2012-01-17 | 2012-07-18 | 李雷 | Expansion joint with small start force for steel-aluminum composite conductor rails |
| CN109982891A (en) * | 2016-11-21 | 2019-07-05 | 标致雪铁龙汽车股份有限公司 | Detachable stiffening device for being fastened on the sliding part of the seat of vehicle on supporting element |
| CN110469616A (en) * | 2018-07-26 | 2019-11-19 | 辽宁同泽减震器有限公司 | A kind of metal damper output shaft radially overcomes the compensation method of gravitational displacement |
-
2009
- 2009-03-03 CN CN2009200055456U patent/CN201401471Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166608A (en) * | 2010-12-28 | 2011-08-31 | 扬州核威碟形弹簧制造有限公司 | Method for processing III-group disc spring |
| CN102166608B (en) * | 2010-12-28 | 2012-08-22 | 扬州核威碟形弹簧制造有限公司 | Method for processing III-group disc spring |
| CN102582470A (en) * | 2012-01-17 | 2012-07-18 | 李雷 | Expansion joint with small start force for steel-aluminum composite conductor rails |
| CN109982891A (en) * | 2016-11-21 | 2019-07-05 | 标致雪铁龙汽车股份有限公司 | Detachable stiffening device for being fastened on the sliding part of the seat of vehicle on supporting element |
| CN110469616A (en) * | 2018-07-26 | 2019-11-19 | 辽宁同泽减震器有限公司 | A kind of metal damper output shaft radially overcomes the compensation method of gravitational displacement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100210 |
|
| CX01 | Expiry of patent term |