CN102384200B - High-damping air spring - Google Patents
High-damping air spring Download PDFInfo
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- CN102384200B CN102384200B CN201110286407.1A CN201110286407A CN102384200B CN 102384200 B CN102384200 B CN 102384200B CN 201110286407 A CN201110286407 A CN 201110286407A CN 102384200 B CN102384200 B CN 102384200B
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Abstract
The invention relates to the field of elastic buffering devices formed by air compression systems, and aims at providing a high-damping air spring which comprises a cylinder body, a piston and a piston rod. The piston divides the cylinder body into an upper cavity and a lower cavity, and comprises a piston body and a cover plate; the piston body is provided with damping through holes which penetrate through two end surfaces of the piston body; damping grooves are distributed on the end surface of the piston body in a reciprocating manner, and can be arranged at one end surface of the piston body or respectively arranged at two end surfaces of the piston body, one ends of the damping grooves are communicated with the upper cavity or the lower cavity through a connecting channel, and the other ends of the damping grooves are communicated with the damping through holes; the cover plate presses the end surface of the piston body and covers the damping grooves; and the lower end of the piston rod is fixedly connected with the piston, and the upper end of the piston rod extends out of the cylinder body. In the high-damping air spring, the damping grooves distributed in a reciprocating manner increases the damp so as to meet the demand on a high-rigidity air spring.
Description
Technical field
The present invention relates to the elastic buffering mechanism field that air compression system consists of, especially a kind of large damping air spring.
Background technique
Air spring has good buffering and shock-proof effect, and the air spring volume is little, cost is low, is widely used in the fields such as body building device, automobile and train; The disclosure of the invention of Chinese patent notification number CN1975194A a kind of air spring, it is between the main elasticity air cavity that piston body separation cylinder block forms and secondary elasticity air cavity, the air compression system that the damping air flue consists of sealing to be set, utilize the damping air flue to the damping force effect of medium, make in main elasticity air cavity and secondary elasticity air cavity and have the gas pressure intensity that does not wait, when piston body was moved up and down by External Force Acting to be air spring externally to show as compression or elongation, it can automatically be regulated its stiffness variation and come balance to adapt to the effect of external force.The damping air flue of this air spring is to be arranged at the damping through hole that connects main elasticity air cavity and secondary elasticity air cavity in the casing wall wall body, and the damping air flue of some air springs is the damping through hole that connects the piston body both ends of the surface; The total sectional area of adjusting the damping air flue can change the damping of damping air flue, thereby changes the rigidity of air spring, satisfies different demands; By the aperture of strengthening the damping through hole or the quantity that increases the damping through hole, can reduce the damping of damping air flue, reduce the rigidity of air spring; By the aperture that reduces the damping through hole or the quantity that reduces the damping through hole, the damping that can strengthen the damping air flue, the rigidity of increasing air spring; The deficiency that present air spring exists is: due to the restriction that is subject to manufacturing process, the damping that strengthens the damping air flue by the aperture that reduces the damping through hole also is restricted, and can not satisfy the demand of large rigidity air spring; Therefore, design a kind of large damping air spring, become problem demanding prompt solution.
Summary of the invention
The objective of the invention is to be restricted in order to overcome the damping that present air spring strengthens the damping air flue by the aperture that reduces the damping through hole, can not satisfy the deficiency of the demand of large rigidity air spring, a kind of large damping air spring is provided.
Concrete technological scheme of the present invention is:
A kind of large damping air spring comprises cylinder body, piston and piston rod; Described piston is separated into epicoele and cavity of resorption with cylinder body; Described piston comprises piston only and cover plate; Described piston only is provided with the damping through hole that connects two end faces of piston only; The end face of described piston only is provided with the damping slot of reciprocal arrangement; Described damping slot can be arranged on an end face of piston only, and an end of damping slot is communicated with epicoele or cavity of resorption by connecting passage, and the other end of damping slot is communicated with the damping through hole; Described piston only also can respectively arrange a damping slot at two end faces, an end of damping slot that is positioned at an end face of piston only is communicated with epicoele by connecting passage, an end of damping slot that is positioned at another end face of piston only is communicated with cavity of resorption by connecting passage, and the other end of two damping slots is communicated with by the damping through hole; Cover plate is pushed down the end face of piston only and is covered damping slot; The lower end of described piston rod is fixedly connected with piston, and stretch out outside cylinder body the upper end of piston rod.The damping slot of the reciprocal arrangement of this large damping air spring has strengthened the demand that damping can be satisfied large rigidity air spring.
As preferably, described damping slot is back and forth arranged and circumferentially.The length of damping slot is longer, strengthens damping better.
As preferably, described piston rod comprises active section, holding part and set screw nut; The diameter of holding part is less than the diameter of active section; Described holding part passes piston only and cover plate, and the set screw nut clamping piston also is threaded with holding part; Stretch out outside cylinder body the upper end of active section.Simple and practical.
As preferably, the periphery of described piston only one end is provided with seal groove; Described connecting passage is the connecting groove that is positioned at the piston only end face, and an end of connecting groove is positioned at the periphery of piston only or the week of seal groove; The other end of connecting groove is communicated with an end of damping slot.Connecting passage is simple and practical, and the sectional area that changes connecting groove can damping adjusting.
As preferably, described cover plate is provided with the projection that protrudes in damping slot, and the size of projection is less than the cross-sectional dimension of damping slot.Can further strengthen damping.
As preferably, the end face of described cover plate is provided with the spring sheet that protrudes in damping slot; The shape and size of spring sheet and the cross section of damping slot coupling.Can further strengthen damping.
As preferably, described connecting passage is the groove that the cover plate periphery is provided with, and groove is positioned at the position relative with damping slot one end and connects two end faces of cover plate.Connecting passage is simple and practical, and the sectional area that changes groove can damping adjusting.
The invention has the beneficial effects as follows:
Compared with prior art, described large damping air spring has the following advantages: one. and the damping slot of the reciprocal arrangement of this large damping air spring has strengthened the demand that damping can be satisfied large rigidity air spring.Two. back and forth arrangement and circumferential damping slot length are longer, strengthen damping better.Three. piston rod and piston structure are simple and practical.Four. connecting passage is simple and practical, and the sectional area that changes connecting groove or groove can damping adjusting.Five. the projection or the spring sheet that protrude in damping slot that cover plate is provided with can further strengthen damping.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is the structural representation of a kind of piston only of the present invention;
Fig. 3 is the A-A revolved sectional view of Fig. 2;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the structural representation of the second cover plate of piston;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the structural representation of the third cover plate of piston;
Fig. 8 is the left view of Fig. 7;
Fig. 9 is the structural representation of another kind of piston of the present invention;
Figure 10 is the left view of Fig. 9.
In figure: cylinder body-1, epicoele-11, cavity of resorption-12, piston-2, piston only-21, damping slot 211, seal groove-212, connecting groove-213, cover plate-22, groove-221, projection-222, spring sheet-223, damping through hole-23, piston rod-3, active section-31, holding part-32, set screw nut-33.
Embodiment
The present invention is described further below in conjunction with shown in accompanying drawing.
As shown in Figure 1: a kind of large damping air spring comprises cylinder body 1, piston 2 and piston rod 3; Described piston 2 is separated into epicoele 11 and cavity of resorption 12 with cylinder body 1.
Described piston 2 comprises piston only 21 and cover plate 22.
Referring to Fig. 2, Fig. 3, Fig. 4: described piston only 21 is provided with the damping through hole 23 that connects 21 two end faces of piston only; The damping slot 211 that two end faces of piston only 21 all have circumferentially and back and forth arrange; An end of damping slot 211 that is positioned at an end face of piston only 21 is communicated with epicoele 11 by connecting passage, an end of damping slot 211 that is positioned at another end face of piston only 21 is communicated with cavity of resorption 12 by connecting passage, and the other end of two damping slots 211 is communicated with by damping through hole 23; The end face of piston only 21 has seal groove 212 along periphery; Connecting passage is connecting groove 213, and connecting groove 213 has two, and two connecting grooves 213 lay respectively at two end faces of piston only 21; One end of a connecting groove 213 is positioned at the periphery of piston only 21, and the other end is communicated with an end of a damping slot 211; One end of another connecting groove 213 is positioned at the week of seal groove 212, and the other end is communicated with an end of another damping slot 211.
Described cover plate 22 has two, and two cover plates 22 is pushed down respectively two end faces of piston only 21 and covered damping slot 211.
Described piston rod 3 comprises active section 31, holding part 32 and set screw nut 33; The diameter of holding part 32 is less than the diameter of active section 31; Holding part 32 passes piston only 21 and two cover plates 22, and a cover plate 22 of set screw nut 33 clamping pistons 2 also is threaded with holding part 32; Stretch out outside cylinder body 1 upper end of active section 31.
The second cover plate of the present invention is referring to Fig. 5, Fig. 6: cover plate 22 have two with piston only 21 assemblings after protrude into projection 222 in damping slot 211, the size of projection 222 is less than the cross-sectional dimension of damping slot 211.
The third cover plate of the present invention is referring to Fig. 7, Fig. 8: the end face of described cover plate 22 have two with piston only 21 assemblings after protrude into spring sheet 223 in damping slot 211; The material of spring sheet 223 is rubber, the cross section coupling of the shape and size of spring sheet 223 and damping slot 211, spring sheet 223 and damping slot 211 Spielpassung.
Another kind of piston of the present invention is referring to Fig. 9, Figure 10: described connecting passage is the groove 221 that cover plate 22 peripheries have, and groove 221 is positioned at the position relative with damping slot 211 1 ends and connects two end faces of cover plate 22.
During this large damping air spring pushing piston bar drive under external force piston movement, gas in cavity of resorption is compressed, overcome the damping of connecting groove or groove, damping slot and damping through hole, flow into epicoele through groove or connecting groove, damping slot and damping through hole, until reach balance; External Force Acting is drop-down when going out piston rod and driving piston movement, and the gas in epicoele is compressed, overcomes the damping of groove or connecting groove, damping slot and damping through hole, flows into cavity of resorption through connecting groove or groove, damping slot and damping through hole, until reach balance; This large damping air spring damping slot can be arranged on an end face of piston only, and when needs strengthened damping, described piston only also can respectively arrange a damping slot at two end faces; The projection that cover plate has protrudes in damping slot, can further strengthen damping; The spring sheet that the end face of cover plate has protrude in damping slot and with the damping slot Spielpassung; The elastic force that air-flow must overcome spring sheet makes the spring sheet distortion just can flow through damping slot, can further strengthen damping; Sectional area by changing connecting groove or groove also can damping adjusting, satisfies large damping air spring to the requirement of rigidity.
It is apparent to one skilled in the art that the present invention can change into various ways, and such change is not thought and departed from the scope of the present invention.The apparent modification of the technician to described field that all are such is within being included in the scope of this claim.
Claims (6)
1. a large damping air spring, comprise cylinder body, piston and piston rod; Described piston is separated into epicoele and cavity of resorption with cylinder body; It is characterized in that: described piston comprises piston only and cover plate; Described piston only is provided with the damping through hole that connects two end faces of piston only; The end face of described piston only is provided with the damping slot of reciprocal arrangement; Described damping slot can be arranged on an end face of piston only, and an end of damping slot is communicated with epicoele or cavity of resorption by connecting passage, and the other end of damping slot is communicated with the damping through hole; Described piston only also can respectively arrange a damping slot at two end faces, an end of damping slot that is positioned at an end face of piston only is communicated with epicoele by connecting passage, an end of damping slot that is positioned at another end face of piston only is communicated with cavity of resorption by connecting passage, and the other end of two damping slots is communicated with by the damping through hole; Cover plate is pushed down the end face of piston only and is covered damping slot; The lower end of described piston rod is fixedly connected with piston, and stretch out outside cylinder body the upper end of piston rod; The periphery of described piston only one end is provided with seal groove; Described connecting passage is the connecting groove that is positioned at the piston only end face, and an end of connecting groove is positioned at the periphery of piston only or the week of seal groove; The other end of connecting groove is communicated with an end of damping slot.
2. large damping air spring according to claim 1 is characterized in that: described damping slot is back and forth arranged and circumferentially.
3. large damping air spring according to claim 1, it is characterized in that: described piston rod comprises active section, holding part and set screw nut; The diameter of holding part is less than the diameter of active section; Described holding part passes piston only and cover plate, and the set screw nut clamping piston also is threaded with holding part; Stretch out outside cylinder body the upper end of active section.
4. according to claim 1 and 2 or 3 described large damping air springs, it is characterized in that: described cover plate is provided with the projection that protrudes in damping slot, and the size of projection is less than the cross-sectional dimension of damping slot.
5. according to claim 1 and 2 or 3 described large damping air springs, it is characterized in that: the end face of described cover plate is provided with the spring sheet that protrudes in damping slot; The shape and size of spring sheet and the cross section of damping slot coupling.
6. according to claim 1 and 2 or 3 described large damping air springs, it is characterized in that: described connecting passage is the groove that the cover plate periphery is provided with, groove is positioned at the position relative with damping slot one end and connects two end faces of cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110286407.1A CN102384200B (en) | 2011-09-23 | 2011-09-23 | High-damping air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110286407.1A CN102384200B (en) | 2011-09-23 | 2011-09-23 | High-damping air spring |
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| Publication Number | Publication Date |
|---|---|
| CN102384200A CN102384200A (en) | 2012-03-21 |
| CN102384200B true CN102384200B (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110286407.1A Active CN102384200B (en) | 2011-09-23 | 2011-09-23 | High-damping air spring |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014109288A (en) * | 2012-11-30 | 2014-06-12 | Hitachi Automotive Systems Ltd | Gas spring |
| CN104016206B (en) * | 2014-06-04 | 2017-01-25 | 张纬 | Damping type over discharge buffering device for mine hoisting system |
| CN104747640A (en) * | 2014-07-21 | 2015-07-01 | 周鸿钧 | High-temperature-resistant nitrogen gas spring |
| CN107061592B (en) * | 2016-12-20 | 2018-12-04 | 慈溪市轻飞特操纵索有限公司 | gas spring |
| CN115681385B (en) * | 2022-11-03 | 2023-07-21 | 兰州空间技术物理研究所 | Parallel gas spring piston assembly with shared piston |
Citations (7)
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|---|---|---|---|---|
| CN1170101A (en) * | 1996-06-25 | 1998-01-14 | 王明珠 | Single cylinder aerating bidirectional vibration absorber |
| CN2743589Y (en) * | 2005-03-15 | 2005-11-30 | 北京吉信气弹簧制品有限公司 | Mechanical spring booster supporting rod air spring |
| CN2859082Y (en) * | 2005-12-31 | 2007-01-17 | 付德海 | Dual-sealing commutated automatic controlling air pressure vibration damper for vehicle |
| EP1903251A1 (en) * | 2006-09-19 | 2008-03-26 | Stabilus GmbH | Displacement device |
| CN201071896Y (en) * | 2007-07-20 | 2008-06-11 | 隆昌山川减振器工业有限公司 | Air spring piston |
| CN102207150A (en) * | 2011-05-24 | 2011-10-05 | 扬州市明瑞气弹簧有限公司 | Compression gas spring |
| CN202251605U (en) * | 2011-09-23 | 2012-05-30 | 宁波一力减震器有限公司 | High-damping gas spring |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005031950B3 (en) * | 2005-07-08 | 2007-03-01 | Stabilus Gmbh | gas spring |
| DE102007036102B4 (en) * | 2007-08-01 | 2011-06-16 | Zf Friedrichshafen Ag | Self-inflating hydropneumatic spring-damper unit |
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2011
- 2011-09-23 CN CN201110286407.1A patent/CN102384200B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170101A (en) * | 1996-06-25 | 1998-01-14 | 王明珠 | Single cylinder aerating bidirectional vibration absorber |
| CN2743589Y (en) * | 2005-03-15 | 2005-11-30 | 北京吉信气弹簧制品有限公司 | Mechanical spring booster supporting rod air spring |
| CN2859082Y (en) * | 2005-12-31 | 2007-01-17 | 付德海 | Dual-sealing commutated automatic controlling air pressure vibration damper for vehicle |
| EP1903251A1 (en) * | 2006-09-19 | 2008-03-26 | Stabilus GmbH | Displacement device |
| CN201071896Y (en) * | 2007-07-20 | 2008-06-11 | 隆昌山川减振器工业有限公司 | Air spring piston |
| CN102207150A (en) * | 2011-05-24 | 2011-10-05 | 扬州市明瑞气弹簧有限公司 | Compression gas spring |
| CN202251605U (en) * | 2011-09-23 | 2012-05-30 | 宁波一力减震器有限公司 | High-damping gas spring |
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| CN102384200A (en) | 2012-03-21 |
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Address after: No. 57, Dagang Sixth Road, Beilun District, Ningbo City, Zhejiang Province, 315800 Patentee after: Ningbo Yili Industrial Co.,Ltd. Address before: No. 57, Dagang Sixth Road, Beilun District, Ningbo City, Zhejiang Province, 315800 Patentee before: NINGBO YILI SHOCK ABSORBER Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |