CN104727456B - A kind of three-dimensional shock-absorption quality tuned damper - Google Patents
A kind of three-dimensional shock-absorption quality tuned damper Download PDFInfo
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- CN104727456B CN104727456B CN201510120101.7A CN201510120101A CN104727456B CN 104727456 B CN104727456 B CN 104727456B CN 201510120101 A CN201510120101 A CN 201510120101A CN 104727456 B CN104727456 B CN 104727456B
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 238000013016 damping Methods 0.000 claims abstract description 36
- 238000005096 rolling process Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The present invention relates to a kind of three-dimensional shock-absorption quality tuned damper, it is provided with horizontal damping device in steel cylinder, this horizontal damping device is connected with the inwall of steel cylinder with horizontal spring by horizontal viscous damper, the centre of this horizontal damping device is provided with vertical mass, it is connected with base with uprighting spring by vertical viscous damper in the bottom of vertical mass, it is provided with directional-rotation shaft stool between base and vertical viscous damper, directional-rotation shaft stool is connected with vertical viscous damper by directional-rotation axle；Form one kind and both can play horizontal shock-absorbing effect, the compound tuned mass damper of vertical cushioning effect can be played again, laterally, longitudinal direction, the effect of vertical direction three-dimensional, design is simple and installs simple, but it is adjustable to have fundamental frequency, quality is adjustable, the advantages of damping is stablized, has the wider suitability than run-of-the-mill tuned damper.
Description
Technical field
The invention belongs to civil engineering structure energy-dissipating and shock-absorbing technical field, and in particular to a kind of control vibration of building, subtracts
The three-dimensional shock-absorption quality tuned damper of little structure structural response under wind load and seismic loading.
Background technology
For high-rise towering and longspan structure, the lateral deformation controlling problem of the structure under wind load and seismic loading
Widely paid close attention to and paid attention to.Confirm through a large amount of practices, tuned mass damper is that a kind of very effective vibration damping controls
Device, is installed on the suitable position of structure, and the reasonable set through product Static stiffness, mass and damping parameter, can
Greatly to reduce the lateral vibration displacement amplitude of structure, and correspondingly reduce the horizontal shear that structure vertical member bears.
General large-span structure, such as overpass, when between building, corridor etc. controls vibration, conventional scheme is, using vertical matter
Amount tuned damper control structure vertical motion, controls extensional vibration by the way of shock isolating pedestal can join viscous damper, this
The practice of sample, expense is larger, design trouble, and installs complicated.And for the tall and slender structure compared with large span component, existing water
Flat shock attenuation needs, have vertical Local Members shock attenuation needs again, using during tuned mass damper damping scheme then be respectively necessary for control
Horizontal vibration processed and two sets of systems controlling vertical motion, equally substantially increase with expense, and design bothers and installs complexity
Problem.
Additionally, for the tuned mass damper of horizontal shock-absorbing, generally not quite identical in both direction quality requirement, pass
The tuned mass damper mass of system is constant it is impossible to adjust in X and Y-direction, there is improved space.
Therefore, produce a kind of structure simple, easy to operate, work is high with operational efficiency, and damping energy consumption effect is good, processing peace
Dress is simple, and accessory is simple and reliable, strong adaptability, the three-dimensional shock-absorption quality tuned damper of long service life, has wide city
Field prospect.
Content of the invention
For the deficiencies in the prior art, the present invention provides structure to be simple and convenient to operate, works and operational efficiency height, damping
Energy consumption effect is good, processing installation is simple, accessory is simple and reliable, the tuning resistance of strong adaptability, long service life three-dimensional shock-absorption quality
Buddhist nun's device.
The technical scheme is that and be achieved in that：A kind of three-dimensional shock-absorption quality tuned damper, including base, fixation
The steel cylinder being arranged on base, the shrouding being arranged on steel cylinder top, are provided with horizontal damping device in described steel cylinder, this level
Damping device is connected with the inwall of steel cylinder with horizontal spring by horizontal viscous damper, at the center of this horizontal damping device
Position is provided with vertical mass, and the bottom of vertical mass is connected with base with uprighting spring by vertical viscous damper
Connect, be provided with directional-rotation shaft stool between base and vertical viscous damper, directional-rotation shaft stool passes through directional-rotation
Axle is connected with vertical viscous damper.
Described horizontal damping device include first level mass, the second leveling qualities block, the 3rd leveling qualities block and
4th leveling qualities block, four leveling qualities blocks are all connected with the inwall of steel cylinder with horizontal spring by horizontal viscous damper
Connect, the both sides of described four lateral surface of vertical mass and first level mass and the second leveling qualities block are all fixing
Vertical connection block is installed, vertical connection block offers vertical slotted hole, in vertical slotted hole, is movably installed with rolling bearing,
The two ends of rolling bearing are installed with connecting bushing, and four lateral surface of vertical mass pass through connecting bushing respectively with first
Leveling qualities block, the inner side of the second leveling qualities block, the 3rd leveling qualities block and the 4th leveling qualities block are flexibly connected, the first water
The both sides of flat mass and the second leveling qualities block are all by connecting bushing and the 3rd leveling qualities block and the 4th leveling qualities block
Inner side be flexibly connected.
Described steel cylinder section be shaped as rectangle, square or or circular, vertical mass is arranged on the centre bit of steel cylinder
Put, the height of vertical mass is not less than 1/2nd of horizontal damping device height.
It is provided with deep floor between the inwall of described base and steel cylinder and outer wall.
Described first level mass, the second leveling qualities block, the 3rd leveling qualities block and the 4th leveling qualities block
Bottom is provided with universal wheel.
Described horizontal viscous damper is four, and four horizontal viscous dampers are separately positioned on first level quality
The inwall of block, the outer side center position of the second leveling qualities block, the 3rd leveling qualities block and the 4th leveling qualities block and steel cylinder it
Between.
Described first level mass, the second leveling qualities block, the 3rd leveling qualities block and the 4th leveling qualities block with
It is provided with four horizontal springs of equal distribution between the inwall of steel cylinder.
The internal diameter of described vertical slotted hole is not less than the external diameter of rolling bearing, and the length of described rolling bearing is not less than
The width of vertical connection block.
The present invention has following good effect：First, present configuration is simple, easy to operate, when using, in closing
Steel cylinder in be mounted with multiple masses in a symmetrical, between each mass, rolling bearing is joined using slotted hole connector
Mode is attached, and each mass is attached with casing with viscous damper and spring respectively simultaneously, thus both forming one kind
Horizontal shock-absorbing effect can be played, the compound tuned mass damper of vertical cushioning effect can be played again, this antivibrator
Snubber block quality in all directions, rigidity, antivibrator freely can adjust configuration as needed, and overall volume is little, laterally,
Longitudinally, vertical direction three-dimensional effect, for engineering project, cost, design is simple and installs simple, but has fundamental frequency
Adjustable, quality is adjustable, the advantages of damping is stablized, has the wider suitability than run-of-the-mill tuned damper.
Brief description
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the overlooking the structure diagram of the present invention.
Fig. 3 is one of internal structure schematic diagram of the present invention.
Fig. 4 is the two of figure internal structure schematic diagram of the present invention.
Fig. 5 is the structural representation of connecting bushing of the present invention.
Fig. 6 is the structural representation of vertical connection block of the present invention.
Specific embodiment
As shown in Fig. 1,2,3,4,5,6, a kind of three-dimensional shock-absorption quality tuned damper, including base 1, it is fixedly mounted on bottom
Steel cylinder 2 on seat 1, it is arranged on the shrouding 3 at steel cylinder 2 top, be provided with horizontal damping device in described steel cylinder 2, this level subtracts
Shake device is connected with the inwall of steel cylinder 2 with horizontal spring 17 by horizontal viscous damper 16, in this horizontal damping device
Centre is provided with vertical mass 5, and vertical viscous damper 7 and uprighting spring 6 and bottom are passed through in the bottom of vertical mass 5
Seat 1 is connected, and is provided with directional-rotation shaft stool 8 between base 1 and vertical viscous damper 7, and directional-rotation shaft stool 8 leads to
Cross directional-rotation axle 9 to be connected with vertical viscous damper 7.
Described horizontal damping device includes first level mass 12, the second leveling qualities block 13, the 3rd leveling qualities
Block 14 and the 4th leveling qualities block 15, four leveling qualities blocks are all by horizontal viscous damper 16 and horizontal spring 17 and steel cylinder
2 inwall is connected, described four lateral surface of vertical mass 5 and first level mass 12 and the second leveling qualities
The both sides of block 13 are all installed with vertical connection block 19, and vertical connection block 19 offers vertical slotted hole 20, vertically oval
It is movably installed with rolling bearing 21, the two ends of rolling bearing 21 are installed with connecting bushing 10, vertical mass 5 in hole 20
Four lateral surface pass through connecting bushing 10 respectively with first level mass 12, the second leveling qualities block 13, the 3rd leveling qualities
The inner side of block 14 and the 4th leveling qualities block 15 is flexibly connected, the both sides of first level mass 12 and the second leveling qualities block 13
All it is flexibly connected with the inner side of the 3rd leveling qualities block 14 and the 4th leveling qualities block 15 by connecting bushing 10.Described steel cylinder
2 sections be shaped as rectangle, square or or circular, vertical mass 5 is arranged on the center of steel cylinder 2, vertical mass 5
Highly it is not less than 1/2nd of horizontal damping device height.It is respectively provided between the inwall of described base 1 and steel cylinder 2 and outer wall
There is deep floor 4.
Described first level mass 12, the second leveling qualities block 13, the 3rd leveling qualities block 14 and the 4th horizontal matter
The bottom of gauge block 15 is provided with universal wheel 18.Described horizontal viscous damper 16 is four, four horizontal viscous dampers
16 are separately positioned on first level mass 12, the second leveling qualities block 13, the 3rd leveling qualities block 14 and the 4th leveling qualities
Between the outer side center position of block 15 and the inwall of steel cylinder 2.Described first level mass 12, the second leveling qualities block 13,
It is provided with four articles of levels of equal distribution between 3rd leveling qualities block 14 and the 4th leveling qualities block 15 and the inwall of steel cylinder 2
Spring 17.The internal diameter of described vertical slotted hole 20 is not less than the external diameter of rolling bearing 21, the length of described rolling bearing 21
Width not less than vertical connection block 19.
, in concrete operations, this three-dimensional shock-absorption quality tuned damper is by three subsystems being placed in steel cylinder body for the present invention
System composition.Vertical mass 5 and its vertical viscous damper 7 being connected between steel cylinder bottom and uprighting spring 6 are formed one and erect
To shock mitigation system；3rd leveling qualities block 14 is with the 4th leveling qualities block 15 and its horizontal viscous that is connected between steel cylinder body sidewall
Antivibrator 16 and horizontal spring 17 form an X to horizontal shock-absorbing system, the 3rd leveling qualities block 14 and the 4th leveling qualities block
15 are placed in steel cylinder bottom by universal wheel 18；First level mass 12 and the second leveling qualities block 13 and its with steel cylinder body sidewall
Between be connected horizontal viscous damper 16 and horizontal spring 17 formed a Y-direction horizontal shock-absorbing system, first level mass 12
With the second leveling qualities block 13, steel cylinder bottom is placed in by universal wheel 18.
Damping shock absorption be by each element between contact method realize, adopt between vertical mass 5 and other each masses
It is attached with the mode that slotted hole joins rolling bearing；Four lateral surface of vertical mass 5 and first level mass 12
All it is installed with vertical connection block 19 with the both sides of the second leveling qualities block 13, vertical connection block 19 offers vertically long
Circular hole 20, is movably installed with rolling bearing 21 in vertical slotted hole 20, the two ends of rolling bearing 21 are installed with connecting bushing
10, four lateral surface of vertical mass 5 pass through connecting bushing 10 respectively with first level mass 12, the second leveling qualities block
13rd, inner side flexible connection, first level mass 12 and second water of the 3rd leveling qualities block 14 and the 4th leveling qualities block 15
All lived by the inner side of connecting bushing 10 and the 3rd leveling qualities block 14 and the 4th leveling qualities block 15 in the both sides of flat mass 13
It is dynamically connected.First level mass 12, the second leveling qualities block 13, the 3rd leveling qualities block 14 and the 4th leveling qualities block 15
It is attached by the way of above-mentioned slotted hole joins rolling bearing.
When vertical mass 5 is vertically subjected to displacement vibration, first level mass 12 adjacent thereto, the second horizontal matter
Gauge block 13, the 3rd leveling qualities block 14 and the 4th leveling qualities block 15 are not moved, i.e. vertical damping subsystem mass
Only include vertical mass 5.
When occurring X to horizontal vibration, the 3rd leveling qualities block 14 and the 4th leveling qualities block 15 drive vertical mass 5
Occur X to displacement with first level mass 12 and the second leveling qualities block 13, that is, X is to damping subsystem performance qualitative character
Mass includes mass the 3rd leveling qualities block 14, the 4th leveling qualities block 15, vertical mass 5, first level quality
Block 12 and the second leveling qualities block 13.Internal diameter due to vertical slotted hole 20 is not less than the external diameter of rolling bearing 21, rolling bearing
21 length is not less than the width of vertical connection block 19, and when occurring X to horizontal vibration, five masses interact and participate in fortune
Dynamic, rolling bearing 21 can make vertical mass 5 participate in X to horizontal vibration according to the gap of its own length.
When there is Y-direction horizontal vibration, first level mass 12 and the second leveling qualities block 13 drive vertical mass 5
There is Y-direction displacement vibration, and the 3rd leveling qualities block 14 and the 4th leveling qualities block 15, due to this connecting structure bearing length relatively
Greatly, the length of rolling bearing 21 is not less than the width of vertical connection block 19, is not followed by first level mass 12 and the second water
Flat mass 13 is subjected to displacement, and that is, the mass of Y-direction damping subsystem performance qualitative character includes first level mass 12
With the second leveling qualities block 13 and vertical mass 5.
Above-mentioned three kinds of mode of vibration advantages are that the mass of vertical damping can simultaneously participate in horizontal shock-absorbing, Y-direction horizontal shock-absorbing
The first level mass 12 of subsystem and the second leveling qualities block 13 can simultaneously participate in X to damping, and X is to damping subsystem
The 3rd leveling qualities block 14 and the 4th leveling qualities block 15 be not involved in the damping of Y-direction, like this for two levels of structure
When direction shock-absorption quality demand is different, can freely be combined very much and adjust so that structure bidirectional damping demand obtains
Good satisfaction.
When demand, it plays vertical shock-absorbing function, vertical mass 5 and its is vertically connected between steel cylinder base plate vertical
Straight viscous damper 7 and uprighting spring 6 play a role, and vertical mass 5 takes needs the 1 to 2% of damping large span component；Rigidity and
Viscous damper then type selecting as needed；Playing X is mass the 3rd leveling qualities block 14, the 4th level to horizontal shock-absorbing function
Mass 15, vertical mass 5, first level mass 12 and the second leveling qualities block 13 move, and with the 3rd leveling qualities
Block 14 plays a role to the horizontal viscous damper 16 being connected and horizontal spring 17 jointly with the 4th leveling qualities block 15 horizontal X,
Mass quality summation and spring, viscous damper parameter carries out type selecting as needed；Playing Y-direction horizontal shock-absorbing function is first
Leveling qualities block 12 and the second leveling qualities block 13 and vertical mass 5 participate in motion, and with first level mass 12 and the
The horizontal viscous damper 16 that the horizontal Y-direction of two leveling qualities block 13 is connected and horizontal spring 17 play a role jointly, mass matter
Amount summation and spring, viscous damper parameter carries out type selecting as needed.All directions Spring Selection is preferably according to respective direction structure
The natural frequency of vibration is taken to consistent principle with this spring system natural frequency of vibration.
The present invention can be with three-dimensional damping, and three kinds of functions integrate, and decreases total cost, during three-dimensional damping, by special
Connecting structure carry out mass be mutually combined with separate, flexible, decrease volume.There is society and warp well
Ji benefit.
Claims (7)
1. a kind of three-dimensional shock-absorption quality tuned damper, including base（1）, be fixedly mounted on base（1）On steel cylinder（2）, peace
It is contained in steel cylinder（2）The shrouding at top（3）It is characterised in that：Described steel cylinder（2）Inside it is provided with horizontal damping device, this level
Damping device passes through horizontal viscous damper（16）And horizontal spring（17）With steel cylinder（2）Inwall be connected, subtract in this level
The centre of shake device is provided with vertical mass（5）, vertical mass（5）Bottom pass through vertical viscous damper（7）
And uprighting spring（6）With base（1）It is connected, in base（1）With vertical viscous damper（7）Between be provided with directional-rotation axle
Bearing（8）, directional-rotation shaft stool（8）By directional-rotation axle（9）With vertical viscous damper（7）It is connected；Described water
Flat damping device includes first level mass（12）, the second leveling qualities block（13）, the 3rd leveling qualities block（14）With the 4th
Leveling qualities block（15）, four leveling qualities blocks are all by horizontal viscous damper（16）And horizontal spring（17）With steel cylinder（2）
Inwall be connected, described vertical mass（5）Four lateral surface and first level mass（12）With the second level
Mass（13）Both sides be all installed with vertical connection block（19）, vertical connection block（19）On offer vertical slotted hole
（20）, vertical slotted hole（20）Inside it is movably installed with rolling bearing（21）, rolling bearing（21）Two ends be installed with connection
Axle sleeve（10）, vertical mass（5）Four lateral surface pass through connecting bushing（10）Respectively with first level mass（12）,
Two leveling qualities blocks（13）, the 3rd leveling qualities block（14）With the 4th leveling qualities block（15）Inner side be flexibly connected, the first water
Flat mass（12）With the second leveling qualities block（13）Both sides all by connecting bushing（10）With the 3rd leveling qualities block（14）
With the 4th leveling qualities block（15）Inner side be flexibly connected.
2. three-dimensional shock-absorption quality tuned damper according to claim 1 it is characterised in that：Described steel cylinder（2）Section
Be shaped as rectangle, square or or circular, vertical mass（5）It is arranged on steel cylinder（2）Center, vertical mass（5）
Height be not less than horizontal damping device height 1/2nd.
3. three-dimensional shock-absorption quality tuned damper according to claim 1 it is characterised in that：Described base（1）And steel
Cylinder（2）Inwall and outer wall between be provided with deep floor（4）.
4. three-dimensional shock-absorption quality tuned damper according to claim 1 it is characterised in that：Described first level quality
Block（12）, the second leveling qualities block（13）, the 3rd leveling qualities block（14）With the 4th leveling qualities block（15）Bottom be respectively provided with
There is universal wheel（18）.
5. three-dimensional shock-absorption quality tuned damper according to claim 1 it is characterised in that：Described horizontal viscous damping
Device（16）For four, four horizontal viscous dampers（16）It is separately positioned on first level mass（12）, the second leveling qualities
Block（13）, the 3rd leveling qualities block（14）With the 4th leveling qualities block（15）Outer side center position and steel cylinder（2）Inwall it
Between.
6. three-dimensional shock-absorption quality tuned damper according to claim 1 it is characterised in that：Described first level quality
Block（12）, the second leveling qualities block（13）, the 3rd leveling qualities block（14）With the 4th leveling qualities block（15）With steel cylinder（2）Interior
It is provided with four horizontal springs of equal distribution between wall（17）.
7. three-dimensional shock-absorption quality tuned damper according to claim 1 it is characterised in that：Described vertical slotted hole
（20）Internal diameter be not less than rolling bearing（21）External diameter, described rolling bearing（21）Length be not less than vertical connection block
（19）Width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510120101.7A CN104727456B (en) | 2015-03-19 | 2015-03-19 | A kind of three-dimensional shock-absorption quality tuned damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510120101.7A CN104727456B (en) | 2015-03-19 | 2015-03-19 | A kind of three-dimensional shock-absorption quality tuned damper |
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| Publication Number | Publication Date |
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| CN104727456A CN104727456A (en) | 2015-06-24 |
| CN104727456B true CN104727456B (en) | 2017-03-01 |
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| CN201510120101.7A Expired - Fee Related CN104727456B (en) | 2015-03-19 | 2015-03-19 | A kind of three-dimensional shock-absorption quality tuned damper |
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Cited By (1)
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| CN107476478A (en) * | 2017-06-28 | 2017-12-15 | 河南城建学院 | A kind of distributed three-dimensional damping thin wall hollow floor |
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| CN1020776C (en) * | 1990-02-19 | 1993-05-19 | 中国建筑科学研究院工程抗震研究所 | Vibrating isolation floor plate |
| CN202954449U (en) * | 2012-11-22 | 2013-05-29 | 南京丹普科技工程有限公司 | Horizontal type tuned mass damper |
| CN203049822U (en) * | 2012-12-05 | 2013-07-10 | 上海英谷桥梁科技有限公司 | Three-dimensional shock absorption damper |
| CN102995786B (en) * | 2012-12-11 | 2014-10-29 | 山东电力集团公司检修公司 | Two-way horizontal adjustable tuned mass damper |
| CN103074947B (en) * | 2013-01-11 | 2014-12-03 | 株洲时代新材料科技股份有限公司 | Tuned mass damper adjustable in three directions |
| CN103147392A (en) * | 2013-03-01 | 2013-06-12 | 河海大学 | Steel bridge function separating shock-absorbing support |
| CN203174802U (en) * | 2013-04-08 | 2013-09-04 | 上海大学 | Three-dimensional multi-frequency tuned mass damper |
| CN103850358A (en) * | 2014-02-21 | 2014-06-11 | 上海大学 | Three-dimensional seism isolation system |
| CN104294954B (en) * | 2014-09-18 | 2016-07-06 | 中国地震局工程力学研究所 | A kind of guide rail disc spring top ball pivot three-dimensional shock isolation pedestal |
| CN104315079B (en) * | 2014-09-18 | 2016-07-06 | 中国地震局工程力学研究所 | Comprise the three-dimensional shock isolation pedestal of spring damping guide rod device |
| CN204491888U (en) * | 2015-03-19 | 2015-07-22 | 河南城建学院 | A kind of three-dimensional shock-absorption quality tuned damper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476478A (en) * | 2017-06-28 | 2017-12-15 | 河南城建学院 | A kind of distributed three-dimensional damping thin wall hollow floor |
| CN107476478B (en) * | 2017-06-28 | 2019-05-03 | 河南城建学院 | A kind of distribution three-dimensional damping thin wall hollow floor |
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Inventor after: Zhou Haitao Inventor after: Hao Xiao Inventor after: Xue Na Inventor after: Huang Wei Inventor after: Wu Hairong Inventor after: Ma Zhengwei Inventor after: Ma Zhe Inventor before: Zhou Haitao Inventor before: Hao Xiao Inventor before: Xue Na Inventor before: Zhang Fengjian Inventor before: Bai Zhe |
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Effective date of registration: 20180705 Address after: 210034 410-52 room 29, 5 high tech five road, hi tech Development Zone, Nanjing, Jiangsu. Patentee after: Nanjing high science shock absorption technology Co.,Ltd. Address before: 467044 Mingyuan Road, new town, Pingdingshan, Henan, Henan University Of Urban Construction Patentee before: Henan University of Urban Construction |
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Granted publication date: 20170301 |