CN201818704U - Single piston rod viscous damper with combined damping - Google Patents
Single piston rod viscous damper with combined damping Download PDFInfo
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- CN201818704U CN201818704U CN2010205847666U CN201020584766U CN201818704U CN 201818704 U CN201818704 U CN 201818704U CN 2010205847666 U CN2010205847666 U CN 2010205847666U CN 201020584766 U CN201020584766 U CN 201020584766U CN 201818704 U CN201818704 U CN 201818704U
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- end cap
- clutch release
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Abstract
The utility model relates to a vibration-proof building element, in particular to a single piston rod viscous damper with combined damping. The damper of the utility model is a single piston rod viscous damper and is characterized in that the piston rod (2) of the single piston rod viscous damper penetrates through a left cylinder cap (1) through a working cylinder (10) on the left side of the piston (5); the inside of the working cylinder (10) on right side of the piston (5) is provided with a cylindrical helical spring (6); one end of the spring is fixed on a right end cap (7), the other end is fixed on the end surface of the piston (5); an outer cylinder barrel (4) is sleeved outside the inner cylinder barrel (3) of the working cylinder (10); the left cylinder cap (1) and the right end cap (7) are separately connected with the both ends of the outer cylinder barrel (4) to ensure that a gap between the inner cylinder barrel (3) and the outer cylinder barrel (4) forms a compensation cylinder (11); the inside of the left cylinder cap (1) is provided with a check valve (13); and the inside of the right end cap (7) is provided with another check valve (12). The viscous damper of the utility model can both provide viscous damping and elastic damping in the entire moving process of the piston.
Description
Technical field
The utility model relates to the structural element of a kind of vibration proof or vibrations, is specifically related to use the movement-damper of liquid as resisting medium, particularly has viscid (also claiming viscous) damper of the single-piston rod of throughflow cylinder one end.
Background technique
The viscous damping device is equivalent to the piston cylinder that working medium is an emplastic with regard to structure, be widely used in fields such as machinery, building.The control mechanism of viscous damping device is that the portion of energy of utilizing working medium will be by the structure transmission in compressive strain or swiftly flowing process to come is converted into thermal dissipation and falls, reach alleviate outer impact of carrying, reduce structural vibration, the purpose of protection structural safety.But this viscous damping device is a kind of speed dependence damper, and the malformation that causes for static load does not then have damping function.Just because of the existing above-mentioned defective of viscous damping device, limited its application in some high-rise long span degree that adopt flexible structural system to design are built.Because the high-rise long span degree of flexible structural system design building wind carry or the effect of the earthquake that earthquake intensity is less under promptly can cause bigger displacement response, reduce the safe application performance of structure.
In addition, the load-deformation curve of viscous damping device is three-back-shaped under the periodicity load action, and the speed index is low more, and Back Word is full more, promptly has the phenomenon of the hysteresis of load-distortion, and speed index low more (≤0.3) is obvious more.Also this just hysteresis characteristic makes that the coercivity of himself was identical with the direction of external load when its outer load changed direction, not only does not have the effect of protection structure, can aggravate the distortion of structure on the contrary.
The patent No. is that the patent of invention of 200810040841.X is asked for protection a kind of " viscous damper that has axially stop block "; this viscous damper prolongs the length of a piston rod on the basis of common viscous damper; and the belleville spring group is located at the end of the piston rod that is installed in prolongation; at the piston rod that prolongs one sets up a resistance cylinders simultaneously; one is provided with pressure ring A in the resistance cylinders; the other end is provided with pressure ring B; when the distortion of structure static load surpasses damping stroke S; the belleville spring group is just fitted with pressure ring A or B; and then compress dish-shaped cluster spring; the rigidity of damper is poly-to be increased, and plays restriction building excess displacement effect.But, obviously there is following deficiency in the foregoing invention patent: the piston rod that 1, runs through the cylinder two ends is the structure of double piston-rod, especially the belleville spring group is located at of conventional viscous damper, at least whole damper to be prolonged the thickness of the viscous damping stroke+belleville spring group of twice, and the length of whole damper is long along with the increase of damping stroke forms multiplication, this not only can cause can't installing because of the restriction in space, even produces unstable phenomenon outside the damper plane because of slenderness ratio is excessive; 2, because the proper functioning stroke of damper is the viscous damping stroke, therefore, the one, when building structure is slowly increased by external force effect or external force just, can cause structure to rock or produce excessive displacement, the 2nd, when external force is the periodicity load, although speed is (the speed index equals 0～0.3) comparatively fast, still there is the defective of the distortion that aggravates structure in the moment of external force change direction; Although 3, described belleville spring group is located in the described resistance cylinders,, last a very long time will be corroded and reduces even follow the string because of no seal approach will contact with humid air unavoidably.
Summary of the invention
In view of the deficiencies in the prior art, technical problem to be solved in the utility model provides a kind of viscous damping device of improved single-piston rod, and this viscous damping device can provide viscous damping and elastic damping simultaneously in the whole process that piston moves.
The technological scheme that the utility model addresses the above problem is as follows:
A kind of single-piston rod viscous damping device with compostie damp, this damper is a kind of single-piston rod viscous damping device, it is characterized in that, the piston rod of described single-piston rod viscous damping device passes left cylinder cap through the clutch release slave cylinder in piston left side, be provided with a cylindrically coiled spring in the clutch release slave cylinder on piston right side, one of this spring is fixed on the right end cap end face of other end fixed piston; The outer sheathed outer cylinder of the inner cylinder tube of described clutch release slave cylinder, left end cap and right end cap be two of outer cylinder respectively, makes the gap between inner cylinder tube and the outer cylinder form a compensating cylinder; Be provided with an one-way valve in the described left end lid, form the left half-duplex channel that clutch release slave cylinder internal viscosity medium can flow in compensating cylinder; Be provided with another one-way valve in the described right-hand member lid, form the right half-duplex channel that a compensating cylinder internal viscosity medium can flow in clutch release slave cylinder.
Single-piston rod viscous damping device with compostie damp described in the utility model, wherein, two of described cylindrically coiled spring can be welded on respectively on right end cap and the piston, also can be fixed on right end cap and the piston by a fixing device respectively.Described fixing device is made up of a pressing plate and two screws, and wherein said pressing plate is a rectangle, and its two is provided with the circular hole that wears screw, and the inboard of two circular holes is provided with and the cylindrically coiled spring head steel wire curve bath that matches.By piston described in the utility model when the move left and right, cylindrically coiled spring must be stretched and be compressed repeatedly, if adopt the fixing stress that obviously very easily produces of welding to concentrate and fracture, therefore adopting above-mentioned two fixing devices two of cylindrically coiled spring to be clamped in securely on the piston of right end cap respectively is a kind of priority scheme of the present utility model.
Damper described in the utility model, wherein said cylindrically coiled spring are located between piston and the right end cap, therefore have following beneficial effect than prior art:
1, the design length of whole damper shortens significantly, and slenderness ratio significantly reduces, and has both reduced the requirement to installing space, has reduced unstability risk outside the damper plane again; In addition, the volume-diminished of whole damper and weight saving also are foreseeable.
2, in the piston moving process, described cylindrically coiled spring on the apply piston, can provide viscous damping and elastic damping for the building structure that needs damping (shaking) control all the time simultaneously.
Therefore 3, described cylindrically coiled spring is located at the piston cylinder that is filled with viscid medium, and is isolated fully with air, do not have the problem of oxidation deactivation, but significant prolongation working life.
4, described viscous damping device becomes compensating cylinder with the gap design between inner cylinder tube and the outer cylinder, the shared area of compensating cylinder internal viscosity medium is very big, the heat that can dissipate and more in clutch release slave cylinder, move and produce, and then the energy-dissipating property of raising damper because of piston.
5, described viscous damping device (as speed index in 0～0.3 scope) when the speed index is very little, the ability of the structural vibration control that can bring into normal play still, and can improve the energy dissipation capacity of damper.
Description of drawings
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are the structural representation of a specific embodiment of damper described in the utility model, wherein, Fig. 1 is a plan view, and Fig. 2 is the A-A sectional drawing of Fig. 1, Fig. 3 is the structure enlarged view of the local I of Fig. 1, and Fig. 4 is the structure enlarged view of the local II of Fig. 1.
Fig. 5 and Fig. 6 are the structural representation of a specific embodiment of pressing plate described in the utility model, and wherein, Fig. 5 is a plan view, and Fig. 6 is the B-B sectional drawing of Fig. 5.
Trial target and reference substance structural representation that Fig. 7 becomes for the damper improvement and design that adopts structure shown in Figure 1.
Fig. 8 is the pseudo-static experimental schematic representation.
Fig. 9 is the resulting F-S plotted curve of pseudo-static experimental, and wherein, solid line is the F-S plotted curve of existing single-piston rod viscous damping device, and dotted line is the F-S plotted curve with single-piston rod viscous damping device of compostie damp described in the utility model.
Embodiment
Referring to Fig. 1～4, outside the outer cylinder 4 sheathed inner cylinder tubes 3, two of outer cylinder 4 is embedded a left cylinder cap 1 and a right cylinder cap 7 respectively, makes to form clutch release slave cylinder 10 in the inner cylinder tube 3, forms compensating cylinder 11 between inner cylinder tube 3 and the outer cylinder 4; Piston 5 is positioned at clutch release slave cylinder 10, and is provided with viscous damping gap 9 between the inner cylinder tube 3; Piston rod 2 passes left end cap 1 through the clutch release slave cylinder 10 in piston 5 left sides, is provided with seal ring 14 between piston rod 2 and the left end cap 1; Be provided with a cylindrically coiled spring 6 in the clutch release slave cylinder 10 on piston 5 right sides, one of this spring by on the fixing device clamping right end cap, and the other end is by the end face of fixing device clamp piston 5; Be provided with an one-way valve 13 in left end cap 1 body, form the left half-duplex channel 17 that clutch release slave cylinder 10 internal viscosity media 8 can flow in compensating cylinder 11; Be provided with another one-way valve 12 in described right end cap 7 bodies, form the right half-duplex channel 18 that a compensating cylinder 11 internal viscosity media 8 can flow in clutch release slave cylinder 10.
Referring to Fig. 3 and Fig. 4, be provided with the left half-duplex channel 17 that is communicated with clutch release slave cylinder 10 and compensating cylinder 11 in the body of left end cap 1, be provided with the right half-duplex channel 18 that is communicated with clutch release slave cylinder 10 and compensating cylinder 11 in the body of end cover body 7.One from clutch release slave cylinder 10 in the described left half-duplex channel 17 inwardly is provided with steel ball 15 and pressure spring 16 successively, forms described one-way valve 13, reduces because of entering of piston rod 2 makes the volume of clutch release slave cylinder 10 with compensation; One from clutch release slave cylinder 10 in the described right half-duplex channel 18 inwardly is provided with pressure spring 16 and steel ball 15 successively, forms described one-way valve 12, increases because of shifting out of piston rod 2 makes the volume of clutch release slave cylinder 10 with compensation.
Referring to Fig. 1, above-mentioned fixing device is made up of pressing plate 19 and the screw 20 that is located in pressing plate 19 two.Referring to Fig. 5 and Fig. 6, described pressing plate 19 is a rectangle, and the inboard that its two wears circular hole 21, two circular holes 21 of screw 20 respectively is provided with and the cylindrically coiled spring 6 head steel wires curve bath 22 that matches.The degree of depth of described curve bath 22 is decided on the close number of turns around steel wire of cylindrically coiled spring 6 heads, and the many more curve baths 22 of the close number of turns around steel wire are just dark more.The described close number of turns around steel wire partly is advisable with a circle a to circle usually, and less or the material rigidity is low can suitably increase when the gauge of wire of coiling spring, these all are that those of ordinary skills are easy to expect.
Below verify further that by the contrast experiment damper described in the utility model is than beneficial effect that prior art had.
1, experiment material
Single-piston rod viscous damping device with compostie damp shown in Figure 1 is designed by the technical parameter shown in the table 1, simultaneously its piston rod 2 and right end cap 7 are designed to as shown in Figure 7, make two simultaneously, wherein, one as experiment product, another part is mounting spring product in contrast not, and two are all adopted dimethicone as viscid medium.
The technical parameter of table 1 viscous damping device
2, laboratory apparatus and equipment
Each one of pseudo-static experimental platform, electro-hydraulic servo actuator (inside has force transducer and displacement transducer), displacement transducer and pseudo-static experimental data collecting instrument.
3, experimental technique
As shown in Figure 8, respectively that experiment product 23 and reference substance 24 is hinged with electro-hydraulic servo actuator 25, be installed in respectively again between two fixing head 26 of pseudo-static experimental platform, connect pseudo-static experimental data collecting instrument (not shown) then.In order to eliminate systematic error, go up installation one displacement transducer 27 at damper (experiment product 23 or reference substance 24) during experiment.
Referring to Fig. 8, start electro-hydraulic servo actuator 25, and adopt the displacement controlling method, the input sine wave load, concrete experimental condition sees Table 2.
Table 2 experimental condition
| Type | Frequency (Hz) | Amplitude (mm) | The hysteresis number of turns | Speed (mm/s) |
| Experiment product | 0.6 | ±56 | 4 | 264 |
| Reference substance | 0.6 | ±56 | 4 | 264 |
4, result
Adopt experiment product 23 and reference substance 24 piston rod stroke S and these two data of load F in loading procedure respectively by the pseudo-static experimental data collecting instrument, and draw out the F-S curve, as shown in Figure 9.As seen from Figure 9, the F-S curve of reference substance 24 is three-back-shaped (shown in the solid line among the figure) of level, when the moment that external force is swerved, because the reaction force of damper lags behind, promptly be equivalent to produce one with external force additional internal force in the same way, if this internal force is to act in the building structure, will inevitably aggravate the distortion of structure; The F-S curve of experiment product 23 then is acclivitous three-back-shaped (shown in the dotted line among the figure), and when the moment that external force is swerved, the internal force of damper also is zero.As seen from the above analysis; suitably select the rigidity of cylindrically coiled spring 6 (see figure 1)s described in the utility model; not only existing viscous damping device can be transformed into the damper of the speed of not relying on; and under the condition of lower speed index, can not produce and external force additional internal force in the same way yet; this is for the displacement response that reduces building structure, and the safety of protection building structure is very useful.
Claims (2)
1. single-piston rod viscous damping device with compostie damp, this damper is a kind of single-piston rod viscous damping device, it is characterized in that, the piston rod (2) of described single-piston rod viscous damping device passes left cylinder cap (1) through the clutch release slave cylinder (10) in piston (5) left side, be provided with a cylindrically coiled spring (6) in the clutch release slave cylinder (10) on piston (5) right side, one of this spring is fixed on the right end cap (7) end face of other end fixed piston (5); The outer sheathed outer cylinder (4) of the inner cylinder tube (3) of described clutch release slave cylinder (10), left end cap (1) and right end cap (7) be two of outer cylinder (4) respectively, makes the gap between inner cylinder tube (3) and the outer cylinder (4) form a compensating cylinder (11); Be provided with an one-way valve (13) in described left end cap (1) body, form the left half-duplex channel (17) that clutch release slave cylinder (10) internal viscosity medium (8) can flow in compensating cylinder (11); Be provided with another one-way valve (12) in described right end cap (7) body, form the right half-duplex channel (18) that a compensating cylinder (11) internal viscosity medium (8) can flow in clutch release slave cylinder (10).
2. a kind of single-piston rod viscous damping device with compostie damp according to claim 1 is characterized in that two of described cylindrically coiled spring (6) is fixed on right end cap (7) and the piston (5) by a fixing device respectively; Described fixing device is made up of a pressing plate (19) and two screws 20, wherein said pressing plate (19) is a rectangle, its two is provided with the circular hole (21) that wears screw (20), and the inboard of two circular holes (21) is provided with and cylindrically coiled spring (6) the head steel wire curve bath (22) that matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205847666U CN201818704U (en) | 2010-10-28 | 2010-10-28 | Single piston rod viscous damper with combined damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205847666U CN201818704U (en) | 2010-10-28 | 2010-10-28 | Single piston rod viscous damper with combined damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201818704U true CN201818704U (en) | 2011-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205847666U Expired - Lifetime CN201818704U (en) | 2010-10-28 | 2010-10-28 | Single piston rod viscous damper with combined damping |
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| Country | Link |
|---|---|
| CN (1) | CN201818704U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994775A (en) * | 2010-10-28 | 2011-03-30 | 广州大学 | Composite damping single-piston rod viscous damper |
| CN103851123A (en) * | 2014-03-07 | 2014-06-11 | 畅建坤 | Shock absorber |
| CN104033529A (en) * | 2014-06-04 | 2014-09-10 | 上海应用技术学院 | Rubber balloon buffer |
| CN109268432A (en) * | 2018-11-16 | 2019-01-25 | 广州大学 | A kind of damper |
-
2010
- 2010-10-28 CN CN2010205847666U patent/CN201818704U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101994775A (en) * | 2010-10-28 | 2011-03-30 | 广州大学 | Composite damping single-piston rod viscous damper |
| CN103851123A (en) * | 2014-03-07 | 2014-06-11 | 畅建坤 | Shock absorber |
| CN104033529A (en) * | 2014-06-04 | 2014-09-10 | 上海应用技术学院 | Rubber balloon buffer |
| CN104033529B (en) * | 2014-06-04 | 2016-01-06 | 上海应用技术学院 | Rubber pneumatic bag buffer |
| CN109268432A (en) * | 2018-11-16 | 2019-01-25 | 广州大学 | A kind of damper |
| CN109268432B (en) * | 2018-11-16 | 2023-08-18 | 广州大学 | Damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110504 Effective date of abandoning: 20130306 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110504 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |