CN1936357A - Non-linear press-rod spring device - Google Patents
Non-linear press-rod spring device Download PDFInfo
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- CN1936357A CN1936357A CN 200610150921 CN200610150921A CN1936357A CN 1936357 A CN1936357 A CN 1936357A CN 200610150921 CN200610150921 CN 200610150921 CN 200610150921 A CN200610150921 A CN 200610150921A CN 1936357 A CN1936357 A CN 1936357A
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- end cap
- fixed disc
- retaining collar
- linear press
- spring device
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Abstract
This invention relates to a non-linear pressure bar spring device including a wrap, a top cover, pressure bars, guiding blocks and guiding grooves, in which, the spring wrap is a shell of a cylindrical non-linear pressure-bar spring device with a bottom, the top cover is a disk with a hump at the top center and parallel to the bottom of the spring wrap and inserted into the wrap , the pressure bars are distributed uniformly along the circle of the top cover, vertical to the bottom of the wrap with both ends mounted on the bottom of the wrap and the lower surface of the top cover, the guiding grooves are several grooves opened vertically and uniformly at the upper part of the inside wall of the wrap and the guiding blocks are mounted on the side wall of the top cover corresponding to the positions of the grooves and inserted in the grooves separately.
Description
Technical field
The present invention relates to a kind of spring assembly.
Background technique
Along with science and technology development, various precision equipments are more and more stricter to isolating the wide band requirement of external environment ultralow frequency, as require to isolate the vibration of the environment between the extraneous 0.5Hz to 70Hz in ultraprecise processing.And there is very big difficulty in the development of ultralow frequency vertical vibration isolation system for a long time, because desire to make vibrating isolation system to have very low natural frequency, then the spring loaded of vibrating isolation system must have extremely low rigidity, owing in vertical vibration isolation system, must utilize the elastic force of spring loaded to offset by the effect of vibration isolator gravity, therefore, spring loaded has very big deformation space in Vertical direction, can bring the stability problem of vibrating isolation system so on the one hand; Make vibrating isolation system produce standing wave effect at the upper frequency place on the other hand, reduce the vibration isolation bandwidth of system.
The present occasion strict to vibration isolation, usually use pneumatic spring, but because pneumatic spring need assist source of the gas, complex structure, overall cost higher, be unfavorable for applying, and its natural frequency also is difficult to be lower than 2Hz, therefore, be necessary to develop a kind of novel non-linear spring device that is applicable to low frequency environments.
Summary of the invention
In order to solve the situation that present spring assembly is not suitable for low frequency environments, the present invention utilizes the unique mechanical property before and after the strut buckling, has designed a kind of non-linear press-rod spring device that is applicable to low frequency environments.
Non-linear press-rod spring device of the present invention comprises spring overcoat, upper end cap, depression bar, guide runner and guiding groove, and described spring overcoat is the shell of the non-linear press-rod spring device cylindraceous at the band end; Described upper end cap is that, Spielpassung parallel with the spring overcoat bottom surface is embedded in the spring overcoat, and its center upper portion has the disk of projection; At least three of described depression bars, along the upper end cap circumference evenly distribute, on the lower surface perpendicular to the bottom surface of spring overcoat, bottom that two ends are fixedly mounted on spring overcoat respectively and upper end cap; At least two of described guiding grooves are several grooves of vertically opening in the even distribution in top of the madial wall of spring overcoat; At least two of described guide runners, on corresponding with the position of the described guiding groove respectively sidewall that is fixedly mounted on upper end cap and embed respectively and be installed in the described guiding groove, utilize the principle that guide runner can only vertical motion in guiding groove to limit the moving direction of upper end cap, so guarantee depression bar stressed be vertical axial force.
Non-linear press-rod spring device of the present invention has adopted depression bar as elastic element, characteristic according to depression bar, have very big rigidity when depression bar bears thrust load less than its ultimate load, lateral bending does not take place in the depression bar state of being kept upright, when the thrust load of bearing during greater than its ultimate load, strut buckling, this moment, the rigidity of depression bar became very low, and lateral bending takes place, the depression bar center line becomes a curve, and is in new state of equilibrium under this state.Derive as can be known through theory, length is the elongated depression bar of L, and under the effect of its ultimate load, no matter two ends are solid or hinged, its natural frequency in Vertical direction is
G is a gravity accleration in the formula.By formula as can be known, by adjusting the length L of depression bar, can make the natural frequency of depression bar
Be reduced to below the 2Hz.
According to above-mentioned analysis, the employing depression bar can be when having advantages of high bearing capacity as the non-linear press-rod spring device of the present invention of elastic element, also has very low natural frequency, non-linear press-rod spring device of the present invention is applied in makees vibration-isolating spring in the vertical vibration isolation system, can solve effectively promptly needs to improve the contradiction that bearing capacity needs to reduce system frequency again, reach good effect, significantly improve the vibration isolation ability of vibrating isolation system, in addition, also obviously raising system produces the frequency of high frequency internal resonance, increases the vibration isolation bandwidth of system.Through the vibration isolation experimental study, non-linear press-rod spring device can make below O.5Hz the vibrating isolation system natural frequency be reduced to, and takes place with interior no high frequency internal resonance at 100Hz, has obtained good vibration isolating effect.
Non-linear press-rod spring device of the present invention is compared with spring assembly in the past, have the following advantages (one), simple in structure, reliable operation, and natural frequency can be reduced to below the 2Hz, and can be according to user's needs flexible design; (2), when having very high bearing capacity, also have very high static stiffness and very low dynamic rate; (3), quality is very little, can improve the internal resonance frequency of system.
Non-linear press-rod spring device of the present invention can be applied to the pressure control spring in the hydraulic control valve, improves its dynamic characteristic, can also be applied in the general vibrating isolation system, and the bearing capacity that is particularly useful for system changes less occasion.
Description of drawings
Fig. 1 is a profile schematic representation of the present invention; Fig. 2 is the plan view of Fig. 1; Fig. 3 is the longitudinal sectional view of embodiment one, mode of execution four, real-time mode seven described non-linear press-rod spring devices; Fig. 4 is the longitudinal sectional view of embodiment two, mode of execution five, mode of execution seven described non-linear press-rod spring devices; Fig. 5 is the plan view of parts 5 among Fig. 4; Fig. 6 is the longitudinal sectional view of embodiment three, mode of execution six, mode of execution seven described non-linear press-rod spring devices; The longitudinal sectional view of Fig. 7 embodiment eight described non-linear press-rod spring devices; Fig. 8 is the longitudinal sectional view of embodiment nine described non-linear press-rod spring devices.
Embodiment
Embodiment one: referring to Fig. 3, the non-linear press-rod spring device of present embodiment is made up of spring overcoat 1, upper end cap 2, depression bar 3, guide runner 9 and guiding groove 10, and spring overcoat 1 is the shell of the non-linear press-rod spring device cylindraceous at the band end; Upper end cap 2 is that, Spielpassung parallel with the bottom surface of spring overcoat 1 is embedded in the spring overcoat 1, and its center upper portion has the disk of projection; 3 at least three of depression bars, depression bar 3 along upper end cap 2 circumference evenly distribute, on the lower surface perpendicular to the bottom surface of spring overcoat 1, bottom that two ends are fixedly mounted on spring overcoat 1 respectively and upper end cap 2; 10 at least two of guiding grooves, it is the groove of vertically opening in the even distribution in the top of the madial wall of spring overcoat 1; 9 at least two of guide runners are on corresponding with the position of the guiding groove 10 respectively sidewall that is fixedly mounted on upper end cap 2 and embed respectively and be installed in the described guiding groove 10.
Non-linear press-rod spring device is in work, the convex portion of upper end cap 2 is connected with load, under the effect of induced pressure, upper end cap 2 moves in spring overcoat, guide runner 9 is fixedlyed connected with upper end cap 2, and be embedded in the guiding groove 10, limited the moving direction of upper end cap 2, so guarantee 3 of depression bars stressed be axial force.
Embodiment two: referring to Fig. 4, the difference of the non-linear press-rod spring device of present embodiment and embodiment one is, also comprise retaining collar 4, following fixed disc 5 down, following retaining collar 4 is that diameter equates, is fixedly mounted on spring overcoat 1 inside bottom surface, certain thickness annulus is arranged with upper end cap 2; Following fixed disc 5 is in the following retaining collar 4 of embedding, is fixedly mounted on spring overcoat 1 bottom, identical with following retaining collar 4 thickness, evenly has the disk of some strias 8 along its circumference; 8 li of the strias of the following fixed disc 5 of one end insertion of depression bar 3, the other end of depression bar 3 is fixedly mounted on the upper end cap 2.
Embodiment three: referring to Fig. 6, the difference of the non-linear press-rod spring device of present embodiment and embodiment two is, also comprise retaining collar 6, go up fixed disc 7, last retaining collar 6 is identical with following retaining collar 4 shapes, and last retaining collar 6 and upper end cap 2 be concentric to be fixedly connected on the lower surface of upper end cap 2; Last fixed disc 7 is identical with following fixed disc 5 shapes, and last fixed disc 7 embeds the internal fixation that goes up retaining collar 6 and is installed on the lower surface of upper end cap 2; 8 li of the strias of fixed disc 7 and following fixed disc 5 are inserted at the two ends of depression bar 3 respectively.
The Placement that depression bar 3 in the non-linear press-rod spring device of present embodiment has adopted two ends to peg graft makes assembling of the present invention more convenient, and dismounting easily, is convenient to safeguard.
Embodiment four: referring to Fig. 3, the difference of the non-linear press-rod spring device of present embodiment and embodiment one is, also comprises damping oil 11, and damping oil 11 is filled in the space of spring overcoat 1 and upper end cap 2 compositions.
Embodiment five: referring to Fig. 4, the non-linear press-rod spring device of present embodiment, be with the difference of embodiment two, also comprise damping oil 11, damping oil 11 is filled in the space of spring overcoat 1, following fixed disc 5, following retaining collar 4, upper end cap 2 compositions.
Embodiment six: referring to Fig. 6, the non-linear press-rod spring device of present embodiment, be with the difference of embodiment three, also comprise damping oil 11, damping oil 11 be filled in spring overcoat 1, down fixed disc 5, down retaining collar 4, go up fixed disc 7 and go up in the space that retaining collar 6 forms.
Embodiment seven: referring to Fig. 3, Fig. 4 and Fig. 6, the non-linear press-rod spring device of present embodiment, be with the difference of arbitrary mode of execution of embodiment four to six, also comprise caulking gum 13, caulking gum 13 is filled in the annular space that the upper surface of spring overcoat 1 and upper end cap 2 forms.
Caulking gum 13 plays the effect of sealing, prevents that damping oil from leaking, and also plays simultaneously and prevents that extraneous dust from entering the effect of system.
Embodiment eight: referring to Fig. 7, the non-linear press-rod spring device of present embodiment, be with embodiment four or five difference, also comprise damper 12, damper 12 is that the vertical cross-section that is fixedly mounted on the lower surface central position of upper end cap 2 is the cylinder of " protruding " type and the assemblying body of disk.
Embodiment nine: referring to Fig. 8, the non-linear press-rod spring device of present embodiment, be with the difference of embodiment six, also comprise damper 12, the vertical cross-section that damper 12 is fixedly mounted on the lower surface central position of fixed disc 7 is the cylinder of " protruding " type and the assemblying body of disk.
Claims (9)
1, a kind of non-linear press-rod spring device, it comprises spring overcoat (1), upper end cap (2), depression bar (3), guide runner (9) and guiding groove (10), described spring overcoat (1) is the shell of the non-linear press-rod spring device cylindraceous at the band end; Described upper end cap (2) is a disk parallel with the bottom surface of spring overcoat (1), that Spielpassung is embedded in the spring overcoat (1), its center upper portion has projection; (3) at least three of depression bars evenly distribute, are fixedly mounted on respectively perpendicular to bottom surface, the two ends of spring overcoat (1) on the lower surface of the bottom of spring overcoat (1) and upper end cap (2) along upper end cap (2) circumference; (10) at least two of guiding grooves are the grooves of vertically opening in the even distribution in top of the madial wall of spring overcoat (1); (9) at least two of guide runners are on corresponding with the position of guiding groove (10) the respectively sidewall that is fixedly mounted on upper end cap (2) and embed respectively and be installed in the described guiding groove (10).
2, non-linear press-rod spring device according to claim 1, it is characterized in that also comprising retaining collar (4), following fixed disc (5) down, following retaining collar (4) is that diameter equates, is fixedly mounted on spring overcoat (1) inside bottom surface, certain thickness annulus is arranged with upper end cap (2); Following fixed disc (5) is in the following retaining collar (4) of embedding, is fixedly mounted on spring overcoat (1) bottom, identical with following retaining collar (4) thickness, evenly has the disk of some strias (8) along its circumference; One end of depression bar (3) inserts stria (8) lining of fixed disc (5) down, and the other end of depression bar (3) is fixedly mounted on the upper end cap (2).
3, non-linear press-rod spring device according to claim 2, it is characterized in that also comprising retaining collar (6), go up fixed disc (7), last retaining collar (6) is identical with following retaining collar (4) shape, and last retaining collar (6) and upper end cap (2) be concentric to be fixedly connected on the lower surface of upper end cap (2); Last fixed disc (7) is identical with following fixed disc (5) shape, and the internal fixation of retaining collar (6) is installed on the lower surface of upper end cap (2) in last fixed disc (7) embedding; Stria (8) lining of fixed disc (7) and following fixed disc (5) is inserted at the two ends of depression bar (3) respectively.
4, non-linear press-rod spring device according to claim 1 is characterized in that also comprising damping oil (11), and damping oil (11) is filled in the space of spring overcoat (1) and upper end cap (2) composition.
5, non-linear press-rod spring device according to claim 2 is characterized in that also comprising damping oil (11), and damping oil (11) is filled in the space of spring overcoat (1), following fixed disc (5), following retaining collar (4), upper end cap (2) composition.
6, non-linear press-rod spring device according to claim 3, it is characterized in that also comprising damping oil (11), damping oil (11) be filled in spring overcoat (1), down fixed disc (5), down retaining collar (4), go up fixed disc (7) and go up in the space that retaining collar (6) forms.
7, according to the described non-linear press-rod spring device of the arbitrary claim of claim 4 to 6, it is characterized in that also comprising caulking gum (13), caulking gum (13) is filled in the annular space that the upper surface of spring overcoat (1) and upper end cap (2) forms.
8, according to claim 4 or 5 described non-linear press-rod spring devices, it is characterized in that also comprising damper (12), damper (12) is that the vertical cross-section that is fixedly mounted on the lower surface central position of upper end cap (2) is the cylinder of " protruding " type and the assemblying body of disk.
9, non-linear press-rod spring device according to claim 6, it is characterized in that also comprising damper (12), the vertical cross-section that damper (12) is fixedly mounted on the lower surface central position of fixed disc (7) is the cylinder of " protruding " type and the assemblying body of disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101509211A CN100410561C (en) | 2006-10-19 | 2006-10-19 | Non-linear press-rod spring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101509211A CN100410561C (en) | 2006-10-19 | 2006-10-19 | Non-linear press-rod spring device |
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| Publication Number | Publication Date |
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| CN1936357A true CN1936357A (en) | 2007-03-28 |
| CN100410561C CN100410561C (en) | 2008-08-13 |
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| CNB2006101509211A Expired - Fee Related CN100410561C (en) | 2006-10-19 | 2006-10-19 | Non-linear press-rod spring device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518742A (en) * | 2011-12-28 | 2012-06-27 | 中国科学技术大学 | Compression bar type passive low-frequency three-dimensional vibration isolator |
| CN102678814A (en) * | 2012-05-10 | 2012-09-19 | 上海交通大学 | Euler compression bar rubber combined heavy-duty low-frequency vibration isolator |
| CN104100667A (en) * | 2014-05-26 | 2014-10-15 | 北京航天控制仪器研究所 | Single cylindrical multi-directional constant-stiffness all-metal vibration absorber |
| CN104565161A (en) * | 2015-01-06 | 2015-04-29 | 中冶长天国际工程有限责任公司 | Elastic compensation device/group/bracket and absorption tower device |
| CN105134848A (en) * | 2014-03-29 | 2015-12-09 | 金丽秋 | Method for preventing spring from being damaged by torsional compression |
| CN105179587A (en) * | 2015-06-30 | 2015-12-23 | 上海交通大学 | Multi-freedom-degree low-frequency large-load all-metal passive vibration isolator |
| CN105370781A (en) * | 2015-11-18 | 2016-03-02 | 同济大学 | Vertical vibration isolator utilizing Euler buckling |
| CN105510139A (en) * | 2015-12-01 | 2016-04-20 | 天津大学 | Dynamic pressure bar stability experiment device for electro-hydraulic servo tester |
| CN110513432A (en) * | 2019-09-03 | 2019-11-29 | 武汉理工大学 | A kind of double nonlinear isolation devices |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2052086U (en) * | 1989-06-27 | 1990-01-31 | 中国石油化工总公司石油化工科学研究院 | Shock-absorbing platform for precision instrument |
| JP3460499B2 (en) * | 1997-03-25 | 2003-10-27 | 株式会社大林組 | Prolonged period of vibration isolation system using canceling spring |
| JP2000186743A (en) * | 1998-12-22 | 2000-07-04 | Nhk Spring Co Ltd | Vibration control trestle for device to be installed |
| CN2752542Y (en) * | 2004-05-12 | 2006-01-18 | 中国科学院长春光学精密机械与物理研究所 | Nonlinear vibration damper for large optical precision instrument transportation |
-
2006
- 2006-10-19 CN CNB2006101509211A patent/CN100410561C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518742A (en) * | 2011-12-28 | 2012-06-27 | 中国科学技术大学 | Compression bar type passive low-frequency three-dimensional vibration isolator |
| CN102518742B (en) * | 2011-12-28 | 2013-09-11 | 中国科学技术大学 | Compression bar type passive low-frequency three-dimensional vibration isolator |
| CN102678814A (en) * | 2012-05-10 | 2012-09-19 | 上海交通大学 | Euler compression bar rubber combined heavy-duty low-frequency vibration isolator |
| CN105134848A (en) * | 2014-03-29 | 2015-12-09 | 金丽秋 | Method for preventing spring from being damaged by torsional compression |
| CN104100667A (en) * | 2014-05-26 | 2014-10-15 | 北京航天控制仪器研究所 | Single cylindrical multi-directional constant-stiffness all-metal vibration absorber |
| CN104565161A (en) * | 2015-01-06 | 2015-04-29 | 中冶长天国际工程有限责任公司 | Elastic compensation device/group/bracket and absorption tower device |
| CN105179587A (en) * | 2015-06-30 | 2015-12-23 | 上海交通大学 | Multi-freedom-degree low-frequency large-load all-metal passive vibration isolator |
| CN105179587B (en) * | 2015-06-30 | 2017-09-08 | 上海交通大学 | Multiple degrees of freedom ultralow frequency big load all-metal passive vibration isolation device |
| CN105370781A (en) * | 2015-11-18 | 2016-03-02 | 同济大学 | Vertical vibration isolator utilizing Euler buckling |
| CN105370781B (en) * | 2015-11-18 | 2017-07-28 | 同济大学 | Utilize the vertical vibration isolation device of Euler's buckling |
| CN105510139A (en) * | 2015-12-01 | 2016-04-20 | 天津大学 | Dynamic pressure bar stability experiment device for electro-hydraulic servo tester |
| CN110513432A (en) * | 2019-09-03 | 2019-11-29 | 武汉理工大学 | A kind of double nonlinear isolation devices |
| CN110513432B (en) * | 2019-09-03 | 2021-08-10 | 武汉理工大学 | Double-nonlinear vibration isolation device |
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| Publication number | Publication date |
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| CN100410561C (en) | 2008-08-13 |
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Granted publication date: 20080813 Termination date: 20091119 |