CN201284812Y - Elastic colloid buffer - Google Patents
Elastic colloid buffer Download PDFInfo
- Publication number
- CN201284812Y CN201284812Y CNU2008201234641U CN200820123464U CN201284812Y CN 201284812 Y CN201284812 Y CN 201284812Y CN U2008201234641 U CNU2008201234641 U CN U2008201234641U CN 200820123464 U CN200820123464 U CN 200820123464U CN 201284812 Y CN201284812 Y CN 201284812Y
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- Prior art keywords
- internal diameter
- elastic gel
- piston
- buffer
- space
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- 239000000084 colloidal system Substances 0.000 title 1
- 238000013016 damping Methods 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims description 17
- 230000003116 impacting effect Effects 0.000 abstract description 5
- 239000000499 gel Substances 0.000 description 51
- 238000000034 method Methods 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003467 diminishing effect Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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- Vibration Dampers (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses an elastic gel buffer, which comprises a piston and a cylinder tube, wherein, the piston comprises a piston rod and a piston top; one end of the cylinder tube is open and the other end of the cylinder tube is closed; an accommodating space is formed inside the cylinder tube; an end cover is arranged on the open end of the cylinder tube; a closed accommodating space is formed by the cylinder tube and the end cover; and elastic gel is filled in the accommodating space. The outside diameter of the piston top is smaller than the inside diameter of the cylinder tube; a damping clearance is formed between the outer edge of the piston top and the inner wall of the cylinder tube; wherein, the accommodating space of the elastic gel buffer is an accommodating space with the inside diameter continually varying; and the damping during the impacting course is adjusted through the variation in the inside diameter of the cylinder tube, thus adjusting the performance curve of the buffer during the impacting course. The performance curve of the buffer during the impacting course can be adjusted according to the requirements during the impacting course; and different use requirements are met.
Description
Technical field
The utility model relates to a kind of buffer that adopts the elastic gel material as buffer medium, particularly relates to a kind of new structure elastic gel buffer of adjusting the bumper property curve by the change buffer internal diameter of cylinder.
Background technique
Damping device in the current industrial production and in the machinery is to adopt pneumatic spring, hydraulic bjuffer, Liquid and gas damper, spring buffer etc. mostly, be used for protection equipment, reduce noise, guarantee the equipment smooth running.The medium of buffer commonly used mostly is hydraulic oil or nitrogen etc. greatly, has relatively high expectations for sealing technique, leaks easily, exists working life short, distinct disadvantage such as damper volume is big, absorptivity is low, inconvenient maintenance.In addition, efficient sealed in the prior art owing to carrying out to resisting mediums such as hydraulic oil or nitrogen, cause the buffer structure more complicated, install and use, dismantle all suitable inconvenience of maintenance.
In order to address the above problem, people have developed a kind of elastic gel buffer medium, and this buffer medium has certain viscosity, compressibility, need not the external force reversibility.Described elastic gel is a kind of high molecular synthetic material, and this material has been widely used in manufacturing and designing of industrial vibration damper abroad, and constantly improves and develop.
Specifically, this elastic gel has following performance characteristics:
1, viscosity: viscosity is that the thickness performance by elastic gel forms between 10000000 to 20000000cst, and this situation can produce high viscous friction, and its value is higher than viscosity far away and has only 50 to 500cst common performance.Viscosity has determined it to have better bumper and absorbing shock performance.
2, compression performance: when elastic gel compresses because of being subjected to externally applied forces, the internal pressure of elastic gel significantly rises, and when pressure was increased to 4000bar, its shrinkage was approximately 15%, this characteristic is similar with general liquid, and compressibility has determined its elastic performance.
3, the most significant advantage of this elastic gel is: in an one-piece apparatus, elastic gel can provide energy consumption and energy storage according to the required ratio of dealing with problems, thereby has eliminated vibration, has absorbed external impact energy.This characteristic and spring-like seemingly, but it has high viscosity, compressibility, significant thermostability and chemical stability, plurality of advantages such as aging.
Please refer to Fig. 1, it is known elastic gel buffer generalized section, as shown in the figure, piston 1 can be in the airtight containing space 21 that cylinder barrel 2 and end cap 3 forms move left and right, be filled with above-mentioned elastic gel 4 in this airtight containing space 21,21 of the containing spaces of piston head 12 and cylinder barrel are formed with annular damping gap 22, the resistance of buffer relies on elastic gel to flow through the annular space and produces, by among the figure as can be known, the inner diameter d of cylinder barrel is constant, and after the piston head fixed size, the annular space size is fixing immediately, the resistance curve of buffer is also fixing thereupon, thereby the performance of damping device is fixed; In addition, the motion beginning will produce fixing resistance, and is excessive to the initial impact forces of object like this, causes device damage easily.
China Patent No. ZL03277279.3 discloses a kind of a kind of buffer that utilizes above-mentioned this elastic gel, situation among similar above-mentioned Fig. 1, though this buffer can be realized buffering, the performance curve of buffer is single, can not adapt to various occasions and performance requirement.
Therefore, be necessary to provide a kind of elastic gel buffer, overcome problems such as the performance curve of buffer in the above-mentioned known technology is single.
The model utility content
The purpose of this utility model is to provide a kind of elastic gel buffer, adjusts the bumper property curve by the change buffer internal diameter of cylinder, with the single problem of resolve buffer device performance curve.
To achieve these goals, the utility model provides a kind of elastic gel buffer, comprising: piston, and described piston comprises piston rod and piston head; Cylinder barrel, the sealing of the cylinder barrel one end opening the other end has a containing space in it; One end of this cylinder barrel opening is provided with end cap, and described cylinder barrel and described end cap form the containing space of a sealing; Be filled with elastic gel in the described containing space; The external diameter of piston head is less than internal diameter of cylinder, be formed with the damping gap between piston head outer rim and the inner wall of cylinder, it is characterized in that, the containing space of described elastic gel buffer is an internal diameter continually varying containing space, comprises the constant space segment of at least one internal diameter and at least one internal diameter gradual change space segment.
Above-mentioned elastic gel buffer, wherein, described containing space comprises that a constant space segment of internal diameter and internal diameter are from large to small or the internal diameter gradual change space segment that changes from small to big.
Above-mentioned elastic gel buffer, wherein, described containing space comprises two the constant space segment of internal diameter and three internal diameter gradual change space segments that internal diameter is different.
Above-mentioned elastic gel buffer wherein, also comprises a Sealing, is arranged on the end cap side near containing space, and described Sealing is close to and is surrounded piston rod.
Above-mentioned elastic gel buffer, wherein, described end cap and described cylinder barrel opening are threaded joint.
From the above, the characteristics and the advantage of new structure elastic gel buffer of the present utility model are:
1, the utility model is simple in structure, realized improving the purpose of shock-absorbing capacity by this simple structure, i.e. variation by internal diameter of cylinder, adjust the size of damping in the impact process, thereby reach the purpose of adjusting the performance curve in the buffer impact process, thereby can adjust the bumper property curve of impact process according to the requirement in the impact process, satisfy different usage requirements.
2, since with elastic gel as medium, and elastic gel is a kind of viscid macromolecular material, so reduced the requirement to sealing, can prolong the working life of buffer.
3, the utility model is owing to adopt the elastic gel medium, and therefore the S. E. A. of described new structure elastic gel buffer can reach more than 80%.
4, can adjust the impact property curve of buffer according to the various requirement of design input, satisfy usage requirement, better protection impacted object and equipment.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model, wherein,
Fig. 1 is known elastic gel buffer generalized section;
Fig. 2 is the utility model elastic gel buffer first embodiment's generalized section;
Fig. 3 is the utility model elastic gel buffer second embodiment's generalized section;
Fig. 4 is the utility model elastic gel buffer the 3rd embodiment's generalized section.
Description of reference numerals:
1 piston
11 piston rods, 12 piston heads
2 cylinder barrels
21 containing spaces, 22 damping gaps
3 end caps
4 elastic gels
5 Sealings
The d internal diameter
X, Y piston position
A, B, C, D, E space segment
Embodiment
Understand for technical characteristics of the present utility model, purpose and effect being had more clearly, now contrast description of drawings embodiment of the present utility model.
Please refer to Fig. 2, be the utility model elastic gel buffer first embodiment's generalized section, as shown in the figure, elastic gel buffer of the present utility model mainly comprises piston 1, cylinder barrel 2, end cap 3, elastic gel 4 and Sealing 5.Wherein, piston 1 comprises piston rod 11 and piston head 12, the sealing of the cylinder barrel 2 one end opening the other ends, has a containing space 21 in it, one end of this cylinder barrel opening is provided with an end cap 3, this end cap 3 can be threaded joint with the opening of cylinder barrel 2, but not as limit, thereby this cylinder barrel 2 and this end cap 3 form the containing space 21 of a sealing, by among the figure as can be known, the internal diameter of the containing space 21 of this cylinder barrel 2 is not unalterable, among the figure containing space 21 from left to right (direction of propulsion when piston is subjected to external force F) be divided into A successively, B, three space segments of C, inner diameter d among the space segment A is bigger, and remain unchanged (space segment that remains unchanged as this internal diameter of A section is called the constant space segment of internal diameter), the inner diameter d among the space segment B then enters space segment C by reducing (space segment as this internal diameter gradual change of B section is called internal diameter gradual change space segment) greatly gradually, it is constant that its inner diameter d will be kept this less internal diameter, and the length of above-mentioned space segment can be set according to actual needs.Be filled with above-mentioned known elastic gel 4 in the containing space 21, this elastic gel 4 can be a kind of viscid macromolecular material, utilize its high viscosity, compressibility, restorability and flowable to produce buffer function, utilize the above-mentioned characteristic of this elastic gel can reduce requirement, and prolong the working life of buffer sealing.
Piston rod 11 slidably passes this end cap 3, and the piston head 12 that piston rod 11 1 ends connect is placed in this containing space 21.Also can be provided with Sealing 5 on this end cap 3, described Sealing 5 is arranged at end cap 3 side near containing spaces 21, is close to and coats piston rod 11, leaks out outside the cylinder barrel in the process that piston 1 moves reciprocatingly to prevent elastic gel 4.By among the figure as can be known, the external diameter of piston head 12 is less than internal diameter of cylinder d, thereby between piston head outer rim and inner wall of cylinder, form damping gap 22, in case because piston head 12 moulding, its external diameter is also just fixing, and the interior of cylinder barrel is variable through d in the utility model, so this damping gap 22 also is variable.The big I in damping gap 22 is set with actual demand.
Specify motion below, the variation of the variation in damping gap 22 and buffer impedance behavior along with piston 1.
As shown in Figure 2, when buffer is subjected to external force, by piston rod 11 masterpiece is used on the piston head 12, and order about piston head 12 and move to containing space 21 right sides from initial position X, elastic gel 4 in the piston head 12 extruding containing spaces 21 makes elastic gel 4 be compressed resiliently deformable and produces elastic damping power, simultaneously, the viscosity of himself flows through the elastic gel 4 at 22 places, damping gap, owing to will produce viscous damping force.When piston head 12 moves in space segment A, owing to damping gap 22 remains unchanged, so the viscous damping performance of its generation presents monotony.When piston head 12 moves to position Y, enter internal diameter gradual change space segment B, because space segment B reduces gradually along its inner diameter d of direction of piston motion, so along with piston head 12 advances to the right, damping gap 22 will diminish gradually, flow through the viscous damping force that the elastic gel 4 at 22 places, damping gap produced and to become gradually greatly, thereby the viscous damping performance is changed to some extent, present non-singularity.And the like, when piston head 12 continues to be advanced among the space segment C, because the internal diameter of C section is constant, and the internal diameter than A section is little, so at piston head 12 in the movement process of C section, the viscous damping force that produces at 22 places, damping gap in will be than A section big and viscous damping performance present monotony.In whole buffering course, rely on elastic gel 4 tough characteristics, the impact energy of a part is converted into heat dissipation at 22 places, damping gap by the viscous damping friction, in addition the impact energy of some changes its elastic potential energy into by the elastic compression of elastic gel 4 and stores, so that as the energy of follow-up piston reset motion.Facts have proved that by the new structure design of above-mentioned elastic gel buffer, the impact energy absorptivity can reach more than 80%; and,, can be provided with initial damping gap bigger by the variation of internal diameter of cylinder; reduce the dynamical reaction in the initial knockout process, better protection impacted object and equipment.
Present embodiment makes the viscous damping characteristic break the single bottleneck of traditional performance by changing internal diameter of cylinder d, adjusts the size of damping in the impact process, makes the resistance-displacement performance curve of buffer present variation, satisfies different usage requirements.In practice, buffer counter-force that the technological scheme of present embodiment is used for the little weight of requirement more when impacting is less, and the occasion of rigid collision did not take place buffer when big weight was impacted.
Please refer to Fig. 3, be the utility model elastic gel buffer second embodiment's generalized section, as shown in the figure, present embodiment is compared difference with first embodiment and is, piston 1 is in the process that is advanced to the right by initial position X, become big B section and the bigger and constant C section of internal diameter through the less and constant A section of internal diameter, internal diameter gradually by little successively, by knowing by inference of above-mentioned first embodiment, present embodiment is followed successively by in the viscous damping characteristic that A, B, three space segments of C produce: less and constant in A section damping gap 22, its viscous damping force is big and performance is single; Become big in B section damping gap 22 gradually by little, its viscous damping force will change, and diminish gradually; Bigger and constant in C section damping gap 22, its viscous damping force is less and performance is single.In practice, the technological scheme of present embodiment is used for initially requiring buffer that enough big counter-force is arranged more, but no longer increases to a certain degree back damping force, produces the occasion of destroying to avoid the excessive impact object of counter-force.Other structures of present embodiment are all identical with first embodiment with performance, do not repeat them here.
Please refer to Fig. 4, be the utility model elastic gel buffer the 3rd embodiment's generalized section, as shown in the figure, present embodiment and first, second embodiment compares difference and is, the variation of internal diameter of cylinder d diversification more, piston is in the process that is advanced to the right by initial position, pass through the bigger and constant A section of internal diameter successively, internal diameter is by the B section that diminishes gradually greatly, the C section that internal diameter is less and constant, internal diameter by little big D section and the internal diameter of becoming gradually by the E section that diminishes gradually greatly, by knowing by inference of above-mentioned first embodiment, present embodiment is at A, B, C, D, the viscous damping characteristic that five space segments of E produce is followed successively by: bigger and constant in A section damping gap 22, its viscous damping force is less and performance is single; By diminishing greatly gradually, it is big that its viscous damping force will become gradually in B section damping gap 22; Less and constant in C section damping gap 22, its viscous damping force is big and performance is single; Become big in D section damping gap 22 gradually by little, its viscous damping force will diminish gradually; Once more by diminishing greatly gradually, it is big that its viscous damping force will become gradually in B section damping gap 22.Other structures of present embodiment and performance all are basically the same as those in the first embodiment, and do not repeat them here.
Above-mentioned only is the several frequently seen embodiment of the utility model elastic gel buffer, in actual applications, according to demand, but internal diameter of cylinder has multiple situation of change and a combination in any, those of ordinary skill in the art can change according to above-mentioned several frequently seen embodiment and more more complicated interior gauge structures, satisfy diversified needs in the reality, enumerate no longer one by one at this.
The above only is the schematic embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (5)
1, a kind of elastic gel buffer comprises: piston, and described piston comprises piston rod and piston head; Cylinder barrel, the sealing of the cylinder barrel one end opening the other end has a containing space in it; One end of this cylinder barrel opening is provided with end cap, and described cylinder barrel and described end cap form the containing space of a sealing; Be filled with elastic gel in the described containing space; The external diameter of piston head is less than internal diameter of cylinder, be formed with the damping gap between piston head outer rim and the inner wall of cylinder, it is characterized in that, the containing space of described elastic gel buffer is an internal diameter continually varying containing space, comprises the constant space segment of at least one internal diameter and at least one internal diameter gradual change space segment.
2, elastic gel buffer according to claim 1 is characterized in that, described containing space comprises that a constant space segment of internal diameter and internal diameter are from large to small or the internal diameter gradual change space segment that changes from small to big.
3, elastic gel buffer according to claim 1 is characterized in that, described containing space comprises two the constant space segment of internal diameter and three internal diameter gradual change space segments that internal diameter is different.
4, elastic gel buffer according to claim 1 is characterized in that, also comprises a Sealing, is arranged on the end cap side near containing space, and described Sealing is close to and is surrounded piston rod.
5, elastic gel buffer according to claim 1 is characterized in that, described end cap and described cylinder barrel opening are threaded joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201234641U CN201284812Y (en) | 2008-11-04 | 2008-11-04 | Elastic colloid buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201234641U CN201284812Y (en) | 2008-11-04 | 2008-11-04 | Elastic colloid buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201284812Y true CN201284812Y (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201234641U Ceased CN201284812Y (en) | 2008-11-04 | 2008-11-04 | Elastic colloid buffer |
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| CN (1) | CN201284812Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062273A (en) * | 2013-01-21 | 2013-04-24 | 陕西理工学院 | Damping-adjustable elastic clay buffer for vehicle |
| CN103154560A (en) * | 2010-09-29 | 2013-06-12 | 丰田自动车株式会社 | Colloidal damper |
| CN106885737A (en) * | 2017-02-07 | 2017-06-23 | 平高东芝（河南）开关零部件制造有限公司 | Hydraulic bjuffer and the operating mechanism load simulation device using the buffer |
| CN107324177A (en) * | 2017-08-29 | 2017-11-07 | 毛艳慧 | A kind of anti-fall device suitable for elevator |
| CN107324175A (en) * | 2017-07-25 | 2017-11-07 | 毛艳慧 | A kind of anti-fall device for elevator |
| CN107795625A (en) * | 2017-09-20 | 2018-03-13 | 武汉船用机械有限责任公司 | A kind of fluid pressure type damping buffer |
| CN107830101A (en) * | 2017-12-07 | 2018-03-23 | 南阳淅减汽车减振器有限公司 | A kind of shock absorber compression hydraulic buffer gear |
| CN108386479A (en) * | 2018-02-14 | 2018-08-10 | 重庆交通大学 | Damper for building anti-fall catching device |
| CN110486526A (en) * | 2019-09-23 | 2019-11-22 | 湖南力威液压设备股份有限公司 | A kind of energy-saving free side-turning type flap valve buffer |
| CN111878536A (en) * | 2020-07-17 | 2020-11-03 | 江苏力汇振控科技有限公司 | Serial-type variable damping viscous fluid damper |
| CN113586641A (en) * | 2020-04-30 | 2021-11-02 | 比亚迪股份有限公司 | Shock absorber and vehicle |
| TWI870908B (en) * | 2023-06-28 | 2025-01-21 | 劦承精密股份有限公司 | Energy dissipation device |
-
2008
- 2008-11-04 CN CNU2008201234641U patent/CN201284812Y/en not_active Ceased
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103154560A (en) * | 2010-09-29 | 2013-06-12 | 丰田自动车株式会社 | Colloidal damper |
| CN103154560B (en) * | 2010-09-29 | 2015-04-01 | 丰田自动车株式会社 | Colloidal damper |
| CN103062273B (en) * | 2013-01-21 | 2015-04-22 | 陕西理工学院 | Damping-adjustable elastic clay buffer for vehicle |
| CN103062273A (en) * | 2013-01-21 | 2013-04-24 | 陕西理工学院 | Damping-adjustable elastic clay buffer for vehicle |
| CN106885737B (en) * | 2017-02-07 | 2019-09-06 | 平高东芝（河南）开关零部件制造有限公司 | Hydraulic bjuffer and operating mechanism load simulation device using the buffer |
| CN106885737A (en) * | 2017-02-07 | 2017-06-23 | 平高东芝（河南）开关零部件制造有限公司 | Hydraulic bjuffer and the operating mechanism load simulation device using the buffer |
| CN107324175A (en) * | 2017-07-25 | 2017-11-07 | 毛艳慧 | A kind of anti-fall device for elevator |
| CN107324177A (en) * | 2017-08-29 | 2017-11-07 | 毛艳慧 | A kind of anti-fall device suitable for elevator |
| CN107795625A (en) * | 2017-09-20 | 2018-03-13 | 武汉船用机械有限责任公司 | A kind of fluid pressure type damping buffer |
| CN107795625B (en) * | 2017-09-20 | 2019-10-22 | 武汉船用机械有限责任公司 | A kind of fluid pressure type damping buffer |
| CN107830101A (en) * | 2017-12-07 | 2018-03-23 | 南阳淅减汽车减振器有限公司 | A kind of shock absorber compression hydraulic buffer gear |
| CN108386479A (en) * | 2018-02-14 | 2018-08-10 | 重庆交通大学 | Damper for building anti-fall catching device |
| CN110486526A (en) * | 2019-09-23 | 2019-11-22 | 湖南力威液压设备股份有限公司 | A kind of energy-saving free side-turning type flap valve buffer |
| CN110486526B (en) * | 2019-09-23 | 2024-03-08 | 湖南力威液压设备股份有限公司 | Energy-saving free side-turning flap valve buffer |
| CN113586641A (en) * | 2020-04-30 | 2021-11-02 | 比亚迪股份有限公司 | Shock absorber and vehicle |
| CN111878536A (en) * | 2020-07-17 | 2020-11-03 | 江苏力汇振控科技有限公司 | Serial-type variable damping viscous fluid damper |
| TWI870908B (en) * | 2023-06-28 | 2025-01-21 | 劦承精密股份有限公司 | Energy dissipation device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20110624 Decision number of declaring invalidation: 16785 Granted publication date: 20090805 |