CN107489723B - Damper with floating piston - Google Patents
Damper with floating piston Download PDFInfo
- Publication number
- CN107489723B CN107489723B CN201710738045.2A CN201710738045A CN107489723B CN 107489723 B CN107489723 B CN 107489723B CN 201710738045 A CN201710738045 A CN 201710738045A CN 107489723 B CN107489723 B CN 107489723B
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- piston
- steel pipe
- floating piston
- piston rod
- floating
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/061—Mono-tubular units
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A kind of damper with floating piston, including piston rod, guide sleeve, oil sealing, steel pipe, rear head.Guide sleeve and steel pipe are connected.Rear head is located at the lower end of steel pipe.The lower end of piston rod passes through guide sleeve from top to bottom and oil sealing extendes back in steel pipe, and is installed with piston.The middle part of steel pipe is equipped with concave ring circle.Plane where the curve that the upper surface of piston is intersected lower than the lower section of convex ring corresponding with concave ring circle and steel pipe touches company with plane.Piston is equipped with the oil guiding hole that its upper and lower surface is connected.Piston rod is equipped with the floating piston of cylinder tubular type in the top for being located at concave ring circle, and floating piston is connected with the inner surface of steel pipe and piston rod packing.The lower section of piston rod is equipped with lower floating piston.Oil medium is full of between floating piston and lower floating piston.Gas medium is full of between floating piston and oil sealing.Lower space between floating piston and rear head is connected in gas port one end of rear head, and the space between floating piston and oil sealing is connected in the other end.
Description
Technical field
The present invention relates to damper technique fields, and in particular to a kind of damper with floating piston.
Background technique
Damper or shock absorber are a kind of devices for slowing down mechanical oscillation using damping characteristic and consuming kinetic energy.It is commonly used in
In the suspension system and motorcycle of automobile, some bicycles also have shock absorber.Some skyscraper are considered for shockproof, also can
There are damper, such as Taipei 101,85 building of Kaohsiung etc..But current damper is mostly not provided with floating piston, affects damping
The service performance of device.
Summary of the invention
Main inventive purpose of the invention is to provide a kind of damper with floating piston.
Technical solution used in the present invention is: a kind of damper with floating piston, including piston rod, guide sleeve, skeleton
Oil sealing, steel pipe, rear head.Guide sleeve and outside framework oil seal are sequentially located at from top to bottom in the upper end of steel pipe, and guide sleeve and steel pipe are connected.Afterwards
End socket is installed in the lower end of steel pipe.The lower end of piston rod sequentially passes through guide sleeve from top to bottom and outside framework oil seal extendes back in steel pipe,
The lower end of piston rod is installed with the piston that the cylinder tubular type being connected is slidingly sealed with the inner surface of steel pipe.The axis of the upper end of steel pipe is cut
Face is in the cupuliform of falling of center opening, and the bottom of a cup of the upper end of guide sleeve and cupuliform, which is touched, to be connected, the upper end of outside framework oil seal and the lower end of guide sleeve
Touching connects, and the lower end of outside framework oil seal and the upper end of cushion collar are touched and connected, and cushion collar and steel pipe are connected.The middle part of steel pipe is equipped with concave ring circle.
Plane where the curve that the upper surface of piston is intersected lower than the lower section of convex ring corresponding with concave ring circle and steel pipe or with
Plane touches company.It is equipped between the lower section of plane and the upper surface of piston and restores valve block.Piston, which is equipped with, is connected its upper and lower surface
Oil guiding hole, restore the internal surface gaps cooperation of valve block and steel pipe or which is provided with the second oil guiding hole communicated with oil guiding hole.It is living
Stopper rod is equipped with the floating piston of cylinder tubular type, the external cylindrical surface of floating piston and the inner surface of steel pipe in the top for being located at concave ring circle
It is connected by sealing ring sealing, the inner surface of floating piston is connected with piston rod by sealing ring sealing.The lower section of piston rod is also
Equipped with lower floating piston.Lower floating piston is slidingly sealed with steel pipe to be connected.It is situated between floating piston and lower floating piston full of oil
Matter.Gas medium is full of between floating piston and outside framework oil seal.Rear head is equipped with gas port, and gas port one end conducting is floated downward
The upper surface of floating piston is connected by corresponding pipeline for space between piston lower surface and rear head upper surface, the other end
Space between the lower surface of outside framework oil seal.
The present invention, by being situated between full of the gas in additional space on the floating piston above the concave ring circle in steel pipe middle section
Matter and full of be set to steel pipe middle section concave ring circle above floating piston lower end and lower floating piston upper end between additional space
Oil medium effect, can effectively improve damper impact resistance and cushion performance, and then improve the use scope of damper.
Preferably, piston is equipped with sealing ring, piston is connected by sealing ring with the sealing of the inner surface of steel pipe.It is wherein close
The number of seal can be with more than one, and sealing ring should not influence the conducting of oil guiding hole on piston.The section of the sealing ring is O
Shape or rectangle.This preferred embodiment, piston and steel pipe can be cooperated using small―gap suture, advantageously reduce processing and manufacturing cost.
Preferably, being equipped with gasket between the upper surface and recovery valve block of piston, the internal surface gaps of gasket and steel pipe are matched
Close or which is provided with the third oil guiding hole communicated with oil guiding hole.This preferred embodiment, structurally reasonable, using effect is good.
Preferably, cushion collar is cylinder tubular type, interior cylinder is connected with piston rod gap, and outside cylinder is equipped in one
Concave ring.Correspondingly, steel pipe is equipped with the fixed lobe for protruding into the interior concave ring.This preferred embodiment, structure is simple, guide sleeve and skeleton
Oil sealing oil sealing it is quick for installation securely.
Preferably, the lower end diameter of piston rod is less than upper end diameter.When piston rod rises to extreme higher position, piston rod
Upper and lower side between shaft shoulder face and planes align.The lower end of piston rod is installed with piston tabletting below piston.This is preferably
Scheme, structure is simple, piston it is quick for installation, reliable.
Preferably, lower floating piston generally cylindrical type, cylindrical surface is equipped with a sealing ring and installs concave ring, sealing ring
Sealing ring is installed in installation concave ring.The section of the sealing ring is O shape or rectangle.This preferred embodiment, structure is simple, processing system
It is easy to make, and using effect is good.
In conclusion the beneficial effects of the present invention are: by living full of the floating above the concave ring circle in steel pipe middle section
Gas medium on plug in additional space and full of above the concave ring circle for being set to steel pipe middle section floating piston lower end and lower floating
The effect of the oil medium of additional space between piston upper end can effectively improve damper impact resistance and cushion performance, into
And improve the use scope of damper.
Detailed description of the invention
Fig. 1: structural schematic diagram of the invention；
In figure: piston rod 1, guide sleeve 2, outside framework oil seal 3, cushion collar 4, interior concave ring 4.1, sealing ring 5, sealing ring 6 float and live
Plug 7 restores valve block 8, gasket 9, piston 11, oil guiding hole 11.1, steel pipe 12, concave ring circle 12.1, fixed lobe 12.2, lower floating work
Plug 13, rear head 14, oil medium 15, gas medium 16, sealing ring 17, plane 18.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
As shown in Figure 1, the present invention includes piston rod 1, guide sleeve 2, outside framework oil seal 3, steel pipe 12, rear head 14.Guide sleeve 2 and bone
Frame oil sealing 3 is sequentially located at from top to bottom in the upper end of steel pipe 12, and guide sleeve 2 and steel pipe 12 are connected.The upper end of rear head 14 protrudes into steel
In pipe 12, rear head 14 seals the lower end for being installed in steel pipe 12, and specific fixed structure is because being that this will not be repeated here for simple technique.It is living
The lower end of stopper rod 1 sequentially passes through guide sleeve 2 from top to bottom and outside framework oil seal 3 extendes back in steel pipe 12, and the lower end of piston rod 1 is installed with
The piston 11 for the cylinder tubular type being connected is slidingly sealed with the inner surface of steel pipe 12.The shaft section of the upper end of steel pipe 12 is in center opening
Fall cupuliform, the bottom of a cup of the upper end of guide sleeve 2 and cupuliform, which is touched, to be connected, the upper end of outside framework oil seal 3 and the lower end touching company of guide sleeve 2, skeleton
The lower end of oil sealing 3 and the upper end of cushion collar 4 are touched and are connected, and cushion collar 4 and steel pipe 12 are connected.Preferably, cushion collar 4 is cylindrical tube
Formula, interior cylinder are connected with 1 gap of piston rod, and outside cylinder is equipped with concave ring 4.1 in one.Correspondingly, steel pipe 12 is equipped with convex
Enter the fixed lobe 12.2 of the interior concave ring 4.1.Lower floating piston 13 generally cylindrical type, cylindrical surface are equipped with a sealing ring
Concave ring is installed, is installed with O-ring seal 13.1 in sealing ring installation concave ring.In addition, the middle part of steel pipe 12 is equipped with concave ring circle 12.1.
The upper surface of piston 11 is lower than where the curve intersected with the lower section of the corresponding convex ring of concave ring circle 12.1 and steel pipe 12
Plane 18 or and variation different according to the situation dynamic with moving up and down for piston rod 1 of piston 11 from 18 company of touching of plane.Plane 18
Lower section and piston 11 upper surface between be equipped with restore valve block 8.Piston 11 is equipped with the oil guiding hole that its upper and lower surface is connected
11.1, it restores valve block 8 and cooperates or which is provided with the second oil guiding hole communicated with oil guiding hole 11.1 with the internal surface gaps of steel pipe 12.
Piston rod 1 is equipped with the floating piston 7 of cylinder tubular type in the top for being located at concave ring circle 12.1.The external cylindrical surface and steel of floating piston 7
The inner surface of pipe 12 is sealed by O-ring seal to be connected, and the inner surface and piston rod 1 of floating piston 7 are sealed by O-ring seal
It is connected.The lower section of piston rod 1 is additionally provided with lower floating piston 13.Lower floating piston 13 is slidingly sealed with steel pipe 12 to be connected.It floats and lives
Oil medium 15 is full of between plug 7 and lower floating piston 13.Gas medium 16 is full of between floating piston 7 and outside framework oil seal 3.As excellent
Choosing, rear head 14 are equipped with gas port, and lower 14 upper surface of 13 lower surface of floating piston and rear head is connected in described gas port one end
Between space, the other end by corresponding pipeline be connected floating piston 7 upper surface and outside framework oil seal 3 lower surface between
Space.
Wherein, piston 11 is equipped with O-ring seal 17, and piston 11 is close by the inner surface of O-ring seal 17 and steel pipe 12
Envelope is connected, and the number of the present embodiment O-ring seal 17 is one, and O-ring seal 17 will not influence leading for oil guiding hole on piston
It is logical.The present embodiment restores valve block 8 and the internal surface gaps of steel pipe 12 cooperate.It is set between the upper surface and recovery valve block 8 of piston 11
There is gasket 9.Gasket 9 cooperates with the internal surface gaps of steel pipe 12 or which is provided with the third oil guiding hole communicated with oil guiding hole 11.1,
The internal surface gaps of the present embodiment gasket 9 and steel pipe 12 cooperate.The inner cylinder face and external cylindrical surface of floating piston 7 pass through O-shaped
Sealing ring is connected with the inner surface of steel pipe 12 or piston rod 1, and the inner cylinder face and external cylindrical surface of the present embodiment floating piston 7 are each
It is slidingly sealed and is connected with the inner surface of steel pipe 12 or piston rod 1 by two O-ring seals 6,5.
Preferably, the lower end diameter of piston rod 1 is less than upper end diameter.When piston rod 1 rises to extreme higher position, piston
Shaft shoulder face between the upper and lower side of bar 1 is flushed with plane 18, and the lower end of piston rod 1 is installed with piston tabletting in the lower section of piston 11
10, the upper surface and plane 18 for restoring valve block 8 flush, and the upper surface of the lower surface and gasket 9 of restoring valve block 8 flushes, gasket 9
Lower surface and the upper surface of piston 11 flush, and the lower surface of piston 11 and the upper surface of piston tabletting 10 flush.Piston tabletting 10
With the attachment of the lower end of piston rod 1, because being simple technique, this will not be repeated here.
Above each O-ring seal is changed to the sealing ring or other suitable sealing rings that section is rectangle.
The specific embodiment of the above is only the preferable embodiment of the present invention, and tool of the invention is not limited with this
Body implements structure and practical range.In fact, the shape, structure and purpose of design can also make according to the present invention
Equivalent variation.Therefore, some equivalence changes made by all shape, structures and purpose of design in accordance with the present invention ought to
It is included within the scope of protection of the present invention namely these equivalence changes all should be by protection of the invention.
Claims (4)
1. a kind of damper with floating piston, including piston rod (1), guide sleeve (2), outside framework oil seal (3), steel pipe (12), after
End socket (14)；Guide sleeve (2) and outside framework oil seal (3) are sequentially located at from top to bottom in the upper end of steel pipe (12), guide sleeve (2) and steel pipe
(12) it is connected；Rear head (14) is installed in the lower end of steel pipe (12)；The lower end of piston rod (1) sequentially passes through guide sleeve from top to bottom
(2) it is extended back with outside framework oil seal (3) in steel pipe (12), the lower end of piston rod (1) is installed with close with the sliding of steel pipe (12) inner surface
The piston (11) of the connected cylinder tubular type of envelope；It is characterized in that: fall cupuliform of the shaft section of the upper end of steel pipe (12) in center opening,
The bottom of a cup of the upper end of guide sleeve and cupuliform, which is touched, to be connected, and the upper end of outside framework oil seal and the lower end of guide sleeve are touched and connected, the lower end of outside framework oil seal and
The upper end of cushion collar (4), which is touched, to be connected, and cushion collar and steel pipe are connected；The middle part of steel pipe is equipped with concave ring circle (12.1)；The upper surface of piston
The lower section of convex ring corresponding lower than concave ring circle and steel pipe intersection curve where plane (18) or with plane (18) phase
Touching connects, and is equipped between the lower section of plane and the upper surface of piston (11) and restores valve block (8)；Piston (11), which is equipped with, to be connected above and below it
The oil guiding hole (11.1) on surface, recovery valve block cooperates or which is provided with the internal surface gaps of steel pipe to be communicated with oil guiding hole (11.1)
The second oil guiding hole；Piston rod is equipped with the floating piston of cylinder tubular type in the top for being located at concave ring circle (12.1), floating piston
External cylindrical surface is connected with the inner surface of steel pipe by sealing ring sealing, and the inner surface and piston rod of floating piston are close by sealing ring
Envelope is connected；Lower floating piston (13) are additionally provided with below piston rod；Lower floating piston is slidingly sealed with steel pipe to be connected；Floating piston
Oil medium (15) are full of between lower floating piston；Gas medium (16) are full of between floating piston and outside framework oil seal；On rear head
Equipped with gas port, lower space between floating piston (13) lower surface and rear head upper surface is connected in described gas port one end, separately
The space between the upper surface of floating piston and the lower surface of outside framework oil seal is connected by corresponding pipeline for one end；On piston (11)
Equipped with sealing ring (17), piston (11) is connected by sealing ring (17) with the sealing of the inner surface of steel pipe (12)；Piston (11) it is upper
Gasket (9) are equipped between surface and recovery valve block (8)；The internal surface gaps of gasket (9) and steel pipe (12) cooperate or which is provided with
The third oil guiding hole communicated with oil guiding hole (11.1)；Cushion collar (4) is cylinder tubular type, interior cylinder and piston rod (1) gap phase
Even, outside cylinder is equipped with concave ring (4.1) in one；Correspondingly, steel pipe (12) is equipped with the fixation for protruding into the interior concave ring (4.1)
Raised (12.3).
2. the damper according to claim 1 with floating piston, it is characterized in that: the upper end of rear head (14) protrudes into steel
It manages in (12).
3. the damper according to claim 1 with floating piston, it is characterized in that: the lower end diameter of piston rod (1) is small
In upper end diameter；Shaft shoulder face and plane when piston rod (1) rises to extreme higher position, between the upper and lower side of piston rod (1)
(18) it flushes.
4. the damper according to claim 1 with floating piston, it is characterized in that: lower floating piston (13) is generally round
Column type, cylindrical surface are equipped with a sealing ring and install concave ring, are installed with sealing ring (13.1) in sealing ring installation concave ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710738045.2A CN107489723B (en) | 2017-08-24 | 2017-08-24 | Damper with floating piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710738045.2A CN107489723B (en) | 2017-08-24 | 2017-08-24 | Damper with floating piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489723A CN107489723A (en) | 2017-12-19 |
| CN107489723B true CN107489723B (en) | 2019-05-21 |
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ID=60646678
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710738045.2A Active CN107489723B (en) | 2017-08-24 | 2017-08-24 | Damper with floating piston |
Country Status (1)
| Country | Link |
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| CN (1) | CN107489723B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562196B (en) * | 2022-01-19 | 2022-12-09 | 张家口宣化华泰矿冶机械有限公司 | Piston buffer mechanism and rock drill |
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| CN205824027U (en) * | 2016-06-23 | 2016-12-21 | 燕山大学 | A kind of electromechanical integration pulsator controller |
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| US8403115B2 (en) * | 2008-01-11 | 2013-03-26 | Penske Racing Shocks | Dual rate gas spring shock absorber |
| US9038791B2 (en) * | 2009-01-07 | 2015-05-26 | Fox Factory, Inc. | Compression isolator for a suspension damper |
| US10145436B2 (en) * | 2015-12-04 | 2018-12-04 | Eko Sport, Inc. | Rear suspension having an air component and an oil component |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201013823Y (en) * | 2006-12-31 | 2008-01-30 | 宁波博雅减震器制造有限公司 | Barrel type hydraulic shock absorber with floating piston |
| CN201152334Y (en) * | 2008-01-14 | 2008-11-19 | 江阴强顺科技有限公司 | Gas spring with damping effect |
| CN201198885Y (en) * | 2008-04-28 | 2009-02-25 | 宁成 | Automatic resetting lockable gas spring |
| CN202251613U (en) * | 2011-09-20 | 2012-05-30 | 宁波一力减震器有限公司 | Rigid locking air spring capable of adjusting inclination angle of treadmill |
| CN202768708U (en) * | 2012-06-25 | 2013-03-06 | 朱洪纲 | Hydraulic synchronous vehicle zero oil consumption refrigeration vibration absorber |
| CN204677668U (en) * | 2015-04-27 | 2015-09-30 | 哈尔滨工程大学 | A kind of passive passive type hydraulic damping device |
| CN204755707U (en) * | 2015-06-30 | 2015-11-11 | 浙江日发纺织机械股份有限公司 | Yarn for take -up device two -chamber keep away hydro -cylinder that shakes |
| CN205578596U (en) * | 2016-04-20 | 2016-09-14 | 许伟 | Improved generation atmospheric pressure damping piston and use its atmospheric pressure damping bumper shock absorber |
| CN205824027U (en) * | 2016-06-23 | 2016-12-21 | 燕山大学 | A kind of electromechanical integration pulsator controller |
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| CN107489723A (en) | 2017-12-19 |
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Address after: No.66 Chunxiao xunhai Road, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo Yili Industrial Co.,Ltd. Address before: No.66 Chunxiao xunhai Road, Beilun District, Ningbo City, Zhejiang Province Patentee before: NINGBO YILI SHOCK ABSORBER Co.,Ltd. |
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