CN206800690U - A kind of grading damper - Google Patents
A kind of grading damper Download PDFInfo
- Publication number
- CN206800690U CN206800690U CN201720552530.6U CN201720552530U CN206800690U CN 206800690 U CN206800690 U CN 206800690U CN 201720552530 U CN201720552530 U CN 201720552530U CN 206800690 U CN206800690 U CN 206800690U
- Authority
- CN
- China
- Prior art keywords
- steel
- damper
- spring
- inner cylinder
- outer sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
Grading damper, belong to building engineering structure anti-seismic technology field, for solving the problems, such as to widen damper use range, technical essential is:Including sliding damper, spring damper and the connector for sliding damper and spring damper, connector starts spring damper when sliding damper movement and stopping.Effect is:The vibrations of smaller or greater intensity no matter are met with, adaptability power consumption can be carried out, thus, use connector so that sliding friction is consumed energy in small shake, and spring consumes energy when shake greatly, and Sexual behavior mode is adapted to according to shockproofness by connector, so it is greatly broadened the use range of damper.
Description
Technical field
The utility model belongs to building engineering structure anti-seismic technology field, is related to a kind of damper.
Background technology
With earthquake take place frequently and the development of anti-seismic technology, people are while seismic design of structures is carried out, also gradually
Start to pay attention to the application of energy dissipator in the structure.Therefore, it can take installation that there is certain energy dissipation capacity in non-weight bearing area
The measure of device, and designing makes damper in itself with well from recovery capacity.When meeting with small shake, structure has in itself
Rigidity can ensure its normal use;When meeting with big shake, as structure deforms in itself, damper is also begun into non-resilient
In the stage, energy-dissipating and shock-absorbing, reduce the destruction of agent structure.
Energy-dissipating and shock-absorbing technology is mainly:By adding passive energy-dissipating device in original structure, consume originally by structure structure
The seismic energy of part consumption, slow down the deformation and damage brought by shock effect to structure significantly.The power consumption developed at present
Device mainly has:Viscous damper, viscoelastic damper, Metallic damper and friction energy dissipation device, wherein preceding two class is referred to as speed phase
Pass type energy consumer, rear two class are referred to as hysteresis type energy consumer, and Metallic damper is divided into lead damper and mild steel damper again.Hysteresis
Type energy consumer is using deformation and hysteresis consumed energy, and velocity correlation type energy consumer is made using viscosity relevant with speed resistance
Damping force is obtained with, change from small amplitude to large amplitude.
The cushioning effect to building typically is played using damper in the prior art, however, being given a shock the shadow of intensity
Ringing, spring rate requirement, which result in damper, can consume energy to offset big metamorphosis, thus, the damping of this rigidity requirement
Device is to small metamorphosis and insensitive, and still, small vibrations are still existing, and this portion of energy should be also consumed, and be made
Obtain no matter damper can meet with the vibrations of smaller or larger intensity, adaptability power consumption can be carried out.
Utility model content
In order to solve the problems, such as to widen damper use range, the utility model proposes following scheme:
A kind of grading damper, including slide damper, spring damper and the company for sliding damper and spring damper
Fitting, the slip damper include the first steel plate group and the second steel plate group;First steel plate group is made up of two blocks of parallel steel plates,
Two steel plates, which symmetrically run through, the chock accommodating hole for moving first telescopic spring direction of the chock along two chocks of connection, quilt
The chock of first spring connection is located in the chock accommodating hole;Second steel plate group is made up of two blocks of parallel steel plates, two steel
Distance between plate allows inwall of the first steel plate group along the second steel plate to slide, and two steel plates, which symmetrically run through to have, is ejected chock
Chock fixing hole, and there is axis hole at the rear of chock fixing hole along glide direction.
Further, the spring damper includes outer sleeve, inner cylinder;Outer sleeve is horizontal positioned hollow cylinder, its
Side bottom surface is not closed, and inner cylinder is the horizontal positioned hollow cylinder that diameter is less than outer sleeve, and it also there is side bottom surface not seal
Close, and be placed in by the bottom surface of not closing of inner cylinder towards the closing bottom surface of outer sleeve in outer sleeve, and inner cylinder does not close bottom surface
There is a distance between the closing bottom surface of outer sleeve, there is the second bullet between the sealing surface of inner cylinder and the sealing surface of outer sleeve
Spring.
Further, described connector includes steel arm, lifting arm, steel column, and the second steel plate group is connected to outer sleeve envelope
Close the outer wall of bottom surface;Side of the chock accommodating hole of an at least steel plate away from the second steel plate group of the first steel plate group is fixed with
One fixing axle, there are two steel arms to be attached to form " L " shape steel arm, one is provided with the axis hole of the second steel plate group
Axle, another two steel arm is connected on the axle to form " L " shape steel arm, and two steel arms are because the junction of axle extends and connects
It is connected on lifting steel arm, lifting steel arm is provided with steel column;Two described " L " shape steel arms form rhombus activity box by axis connection;
Described steel column is plugged to inner cylinder by the spacing hole activity of outer sleeve, inner cylinder side, will by steel column when steel column is plugged to inner cylinder
Second spring demarcates.
Further, the one end of the first described steel plate away from the second steel plate is connected with a baffle plate, and the baffle plate is connected to
On connecting plate, the closing bottom surface of inner cylinder is connected with a baffle plate, and the baffle plate is connected on connecting plate.
Further, described second spring is the spring prepared by memorial alloy, and second spring is divided by steel column
Position has recess;When rhombus activity box motion drive steel column moves up, spacing hole when it is moved on disengaging inner cylinder, and by
The spacing hole of outer sleeve is limited between inner cylinder and outer sleeve, and lifting arm is connected with " L " shape steel arm has an angle, makes liter
Arm drops parallel to the side of outer sleeve and inner cylinder, and steel column is vertical grafting.
Beneficial effect:The utility model allows damper no matter to meet with the vibrations of smaller or larger intensity, can
Adaptability power consumption is carried out, thus, utilize connector so that in small shake, sliding friction is consumed energy, and spring consumes energy when shake greatly,
And Sexual behavior mode is adapted to according to shockproofness by connector, so it is greatly broadened the use range of damper.
Brief description of the drawings
Fig. 1 is grading damper assembling effect figure.
Fig. 2 is Fig. 1 C-D structural maps.
Fig. 3 is the schematic diagram with triangular-shaped wedge steel plate.
Fig. 4 is C-D connection sectional views.
Wherein:1. the first steel plate group, 2. second steel plate groups, 3. chocks, 4. first springs, 5. chock accommodating holes, 6. chocks
Fixing hole, 7. axis holes, 8. outer sleeves, 9. inner cylinders, 10. second springs, 11. steel arms, 12. lifting arms, 13. steel columns, 14. fix
Axle, 15. baffle plates, 16. connecting plates, 17.U type grooves.
Embodiment
Embodiment:A kind of grading damper, including slide damper, spring damper and slide damper and spring shock absorption
The connector of device, connector start spring damper when sliding damper movement and stopping.It is general in the prior art to use damping
Device plays the cushioning effect of building, however, by damping intensity effect, spring rate requirement, which result in damper, to consume energy
To offset big metamorphosis, thus, the damper of this rigidity requirement is still, small to small metamorphosis and insensitive
Vibrations are still existing, and this portion of energy should be also consumed so that no matter damper can meet with smaller or greater intensity
Vibrations, adaptability power consumption can be carried out, thus, use connector so that in small shake sliding friction consume energy, shake greatly
When spring consume energy, and Sexual behavior mode is adapted to according to shockproofness by connector, is so greatly broadened the use range of damper.
In one embodiment, the slip damper includes the first steel plate group and the second steel plate group;
The slip damper includes the first steel plate group 1 and the second steel plate group 2;
First steel plate group 1 is made up of two blocks of parallel steel plates, and two steel plates, which symmetrically run through to have, makes chock 3 along connection two
The chock accommodating hole 5 of the telescopic direction of second spring 4 movement of chock 3, the chock 3 connected by second spring 4 are located at chock appearance
Put in hole 5;
Second steel plate group 2 is made up of two blocks of parallel steel plates, and distance between two steel plates allows the first steel plate group 1 along the
The inwalls of two steel plates slides, and two steel plates are symmetrically through there is the chock fixing hole 6 that is ejected chock 3, and along glide direction
There is axis hole 7 at the rear of chock fixing hole 6.This solution provides one kind to slide damper, is embedded using two groups of parallel steel plates
Formula is slided, and using the spacing mode of chock, stops sliding when sliding intensity and being not suitable for supporting current seismic intensity, there is provided
One-level damping.
In one embodiment, the spring damper includes outer sleeve 8, inner cylinder 9;Outer sleeve 8 is horizontal positioned sky
Heart cylinder, its side bottom surface are not closed, and inner cylinder 9 is the horizontal positioned hollow cylinder that diameter is less than outer sleeve 8, and it also has one
Side bottom surface is not closed, and is placed in by the bottom surface of not closing of inner cylinder 9 towards the closing bottom surface of outer sleeve 8 in outer sleeve 8, and inner cylinder
9 do not close has a distance between bottom surface and the closing bottom surface of outer sleeve 8, in the envelope of the sealing surface and outer sleeve 8 of inner cylinder 9
Closing between face has second spring 10.This solution provides a kind of spring damper, and it is an object of the present invention to provide two level shakes.
In one embodiment, described connector includes steel arm 11, lifting arm 12, steel column 13, and the second steel plate group 2 connects
It is connected to the outer wall that outer sleeve 8 closes bottom surface;The chock accommodating hole 5 of an at least steel plate for the first steel plate group 1 is more away from
The side of two steel plate groups 2 is fixed with a fixing axle 14, has two steel arms 11 to be attached to form " L " shape steel arm 11, described
One axle is installed in the axis hole 7 of the second steel plate group 2, another two steel arm 11 is connected on the axle to form " L " shape steel arm 11, and
And two steel arms 11, because the junction of axle extends and is connected on lifting steel arm 11, lifting steel arm 11 is provided with steel column 13;
Two described " L " shape steel arms 11 form rhombus activity box by axis connection;Described steel column 13 is by outer sleeve 8, inner cylinder 9 side
Spacing hole activity is plugged to inner cylinder 9, when steel column 13 is plugged to inner cylinder 9, is demarcated second spring 10 by steel column 13.The party
Case provides a kind of connector, and firsts and seconds damping is attached, and by connector another level damping failure after, open automatically
Dynamic two level damping, so as to obtain a kind of damper that adaptability damping selection is carried out automatically according to shockproofness of wide scope.
The one end of the first described steel plate away from the second steel plate is connected with a baffle plate 15, and the baffle plate 15 is connected to connecting plate
On 16, the closing bottom surface of inner cylinder 9 is connected with a baffle plate 15, and the baffle plate 15 is connected on connecting plate 16.
In one embodiment, the spring between the sealing surface of described inner cylinder 9 and the sealing surface of outer sleeve 8 is by remembering
Alloy is prepared, and spring has recess by the position that steel column 13 divides;The motion of rhombus activity box drives steel column 13 to moving up
Depart from the spacing hole on inner cylinder 9 when dynamic, when it is moved, and be limited in by the spacing hole of outer sleeve 8 between inner cylinder 9 and outer sleeve 8,
And lifting arm 12 is connected with " L " shape steel arm 11 has an angle, make side of the lifting arm 12 parallel to outer sleeve 8 and inner cylinder 9,
Steel column 13 is vertical grafting.
Steel column is limited between inner cylinder and outer sleeve, and the vertical grafting of steel column, in order to its maintenance when
Wait, it is easier to the position returned in inner cylinder, if directly deviating from overcoat, do not only take up larger space, and be not easy to reply, separately
On the one hand, it is memory alloy spring by spring selection, purpose is also for the superpower restoring force using memorial alloy so that damping
Afterwards, spring can accurately revert to initial state and position so that steel column smoothly divides spring when inserting inner cylinder.Shape is remembered
The super elastic characteristics for recalling alloy have many advantages compared with other ordinary metallic materials:Super elastic shape memory alloy is tired first
Labor characteristic is fine, and is inevitably damaged in other materials circulation, influences the life-span;Secondly marmem can recover
Strain value is very big, what ordinary metallic material was difficult to;Finally, due to Ovshinsky bulk modulus is more than geneva bulk modulus,
Shape memory alloy elastic modulus raises with temperature and increases (opposite with common metal), and this makes it still keep at relatively high temperatures
High elastic modulus.Therefore, the spring section of the device can be fabricated to using marmem.
The application method of grading damper described in above-mentioned each scheme is as follows:
Inwall of two steel plates of the first steel plate group 1 along the second steel plate group 2 slides, to the end of the steel plate group 1 of chock 3 and first
The chock 3 that makes be connected with spring with compression spring is contacted to be moved in accommodating hole, chock 3 with the first steel plate group 1 slide up to by
Being ejected in the chock fixing hole 6 of second steel plate group 2, the first steel plate group 1, which is fixed, no longer to be slided, described in the first steel plate group 1
Fixing axle 14 is slided with the first steel plate group 1, and in sliding process, " L " the shape steel arm 11 being connected thereto gradually deforms, and draws
Play connected another " L " shape steel arm 11 gradually to deform, be somebody's turn to do " L " shape steel arm 11 and deform to drive lifting arm 12 to be lifted up,
Lifting arm 12 drives connected steel column 13 to be lifted up, and the spring for making to be divided connects;
Lifting arm 12 is parallel to the side of outer sleeve 8 and inner cylinder 9, and steel column 13 is vertical grafting, and lifting arm 12 is lifted up
When, drive steel column 13 to depart from the spacing hole on inner cylinder 9, and by the spacing hole of outer sleeve 8 be limited in inner cylinder 9 and outer sleeve 8 it
Between.
Chock 3 is extruded, makes it by being bounced back in chock fixing hole 6, the first steel plate group 1 is outside along the inwall of the second steel plate group 2
Draw and slide, the fixing axle 14 in the first steel plate group 1 slides in and out with the first steel plate group 1, and in sliding process, is connected thereto
" L " shape steel arm 11 gradually deforms, and causes connected another " L " shape steel arm 11 gradually to deform, and is somebody's turn to do " L " shape steel arm 11 and deforms
To drive the falls downward of lifting arm 12, lifting arm 12 drives the connected falls downward of steel column 13, until steel column 13 is by second
The recess of spring 10 second spring 10 will demarcate made of memorial alloy.
In a specific embodiment, the purpose of the disclosure is to mitigate the influence that vibrations are brought to structure, in building
Non-weight bearing area adds damper, using the characteristic passively to consume energy, reaches the purpose of energy-dissipating and shock-absorbing, mitigates structural damage.Skill
Art scheme is realized in:A kind of grading damper, SMA springs, and the metal arm of force are added in construction so that the device
Friction energy-dissipating is utilized when small deformation acts on, is consumed energy when large deformation acts on using spring.Such as Fig. 1 institutes when device acts on without external force
Show, as Fig. 4 shows that the vibration of structure small deformation only C-D section friction energy-dissipatings, section A-B do not work.Structure large deformation as shown in Figure 2 is shaken
Dynamic to drive the steel plate (the first steel plate group) with triangular-shaped wedge mobile, triangular-shaped wedge can move under telescopic spring effect
Dynamic, the steel plate with triangular-shaped wedge slides along another steel plate (the second steel plate group) inwall, until chock enters another steel plate
When in chock fixing hole, spring-return is original state, and chock is stuck at fixing hole.This disclosure relates to four steel arms, two steel arms
Intersect and crosspoint is connected to by connecting shaft (i.e. corresponding to " L " shape steel arm described in a upper embodiment, crosspoint is that axle connects
End), connecting shaft is fixed on the steel plate with triangular-shaped wedge, and another two steel arm also intersects and is connected to crosspoint by connecting shaft, even
Spindle axle is connected on another steel plate, and the free end of the two groups of intersection steel arms axle that intersects connects to form rhombus steel arm;
Wherein, this group that connecting shaft axle is connected on another steel plate intersects steel arm, and in intersection, two steel arms extend, and
Extending end connecting cross arm, transverse arm connection steel cylinder.Steel plate with triangular-shaped wedge drives the movement of rhombus steel arm, while rhombus steel
Arm movement drives the body arm of strip cylinder to be rotated around bolt, and steel cylinder can be pulled out, section A-B start-up operation spring-return power meeting
It is set to be moved in perforated sleeve, using the restoring force dissipation energy of spring, and the steel plate with triangular-shaped wedge can after shake
Pressing down triangular-shaped wedge taking human as ground makes its reset, can now draw the steel plate and be returned to original position.Fig. 3 shows with holes
Inner and outer sleeves be cylindrical shape cylinder, spring is placed directly in cylinder, spring is moved just in cylinder, spring
Segmentation is placed as shown in figure 1, its shiny surface of steel cylinder is advantageous to it and is preferably pulled out, and the depth that it is inserted in cylinder is appropriate,
So that small vibration is unlikely to be pulled out when acting on.The effect of the disclosure is can to mitigate the influence that vibrations are brought, and device letter
List is easy to operate to be connected by way of assembling, reparation and daily maintenance after convenient disassembly and convenient shake,
Field of civil engineering is can be widely applied to, huge economic benefit and social benefit can be brought.
It is described above, the only preferable embodiment of the invention, but the protection domain of the invention is not
This is confined to, any one skilled in the art is in the technical scope that the invention discloses, according to the present invention
The technical scheme of creation and its inventive concept are subject to equivalent substitution or change, should all cover the invention protection domain it
It is interior.
Claims (5)
1. a kind of grading damper, it is characterised in that including sliding damper, spring damper and damper and spring will be slided
The connector of damper connection;
The slip damper includes the first steel plate group (1) and the second steel plate group (2);
First steel plate group (1) is made up of two blocks of parallel steel plates, and two steel plates, which symmetrically run through to have, makes chock (3) along connection two
The chock accommodating hole (5) of the first spring (4) telescopic direction movement of chock (3), chock (3) position connected by the first spring (4)
In the chock accommodating hole (5);
Second steel plate group (2) is made up of two blocks of parallel steel plates, and distance between two steel plates allows the first steel plate group (1) along the
The inwalls of two steel plates slides, and two steel plates are symmetrically through there is the chock fixing hole (6) that is ejected chock (3), and along slip
Direction has axis hole (7) at the rear of chock fixing hole (6).
2. grading damper as claimed in claim 1, it is characterised in that the spring damper includes outer sleeve (8), inner cylinder
(9);Outer sleeve (8) is horizontal positioned hollow cylinder, and its side bottom surface is not closed, and inner cylinder (9) is that diameter is less than outer sleeve (8)
Horizontal positioned hollow cylinder, it also there is side bottom surface not close, and does not close bottom surface towards overcoat by inner cylinder (9)
The closing bottom surface of cylinder (8) is placed in outer sleeve (8), and between the closing bottom surface for not closing bottom surface and outer sleeve (8) of inner cylinder (9)
With a distance, there is second spring (10) between the sealing surface of inner cylinder (9) and the sealing surface of outer sleeve (8).
3. grading damper as claimed in claim 2, it is characterised in that described connector includes steel arm (11), lifting arm
(12), steel column (13), and the second steel plate group (2) is connected to the outer wall of outer sleeve (8) closing bottom surface;The first steel plate group (1)
The chock accommodating hole (5) of an at least steel plate be fixed with a fixing axle (14) away from the side of the second steel plate group (2), have two steel
Arm (11) is attached to, to form " L " shape steel arm (11), be provided with an axle in the axis hole (7) of the second steel plate group (2), separately
Two steel arms (11) are connected on the axle to form " L " shape steel arm (11), and two steel arms (11) are due to the junction of axle
Extend and be connected on lifting steel arm (11), lifting steel arm (11) is provided with steel column (13);Two described " L " shape steel arms (11)
Rhombus activity box is formed by axis connection;Described steel column (13) is by outer sleeve (8), the spacing hole activity grafting of inner cylinder (9) side
To inner cylinder (9), when steel column (13) is plugged to inner cylinder (9), second spring (10) is demarcated by steel column (13).
4. the grading damper as described in any one of Claims 2 or 3, it is characterised in that the first steel plate is away from the second steel plate
One end is connected with a baffle plate (15), and the baffle plate (15) is connected on connecting plate (16), closing bottom surface and the baffle plate of inner cylinder (9)
(15) connect, and the baffle plate (15) is connected on connecting plate (16).
5. grading damper as claimed in claim 4, it is characterised in that the sealing surface of described inner cylinder (9) and outer sleeve (8)
Sealing surface between second spring to be prepared by memorial alloy, and second spring is had by the position that steel column (13) divides
Recess;When rhombus activity box motion drive steel column (13) moves up, spacing hole when it is moved on disengaging inner cylinder (9), and by
The spacing hole of outer sleeve (8) is limited between inner cylinder (9) and outer sleeve (8), and lifting arm (12) connects with " L " shape steel arm (11)
Connecing has an angle, makes side of the lifting arm (12) parallel to outer sleeve (8) and inner cylinder (9), and steel column (13) is vertical grafting.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720552530.6U CN206800690U (en) | 2017-05-17 | 2017-05-17 | A kind of grading damper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201720552530.6U CN206800690U (en) | 2017-05-17 | 2017-05-17 | A kind of grading damper |
Publications (1)
Publication Number | Publication Date |
---|---|
CN206800690U true CN206800690U (en) | 2017-12-26 |
Family
ID=60739950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201720552530.6U Expired - Fee Related CN206800690U (en) | 2017-05-17 | 2017-05-17 | A kind of grading damper |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN206800690U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107419814A (en) * | 2017-05-17 | 2017-12-01 | 大连大学 | Grading damper |
CN109457829A (en) * | 2018-11-21 | 2019-03-12 | 大连大学 | Combined isolation support |
CN113431414A (en) * | 2020-07-20 | 2021-09-24 | 长江师范学院 | Safe type building shock attenuation buffer |
-
2017
- 2017-05-17 CN CN201720552530.6U patent/CN206800690U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107419814A (en) * | 2017-05-17 | 2017-12-01 | 大连大学 | Grading damper |
CN109457829A (en) * | 2018-11-21 | 2019-03-12 | 大连大学 | Combined isolation support |
CN113431414A (en) * | 2020-07-20 | 2021-09-24 | 长江师范学院 | Safe type building shock attenuation buffer |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107152098B (en) | It is classified shock-dampening method | |
CN206800690U (en) | A kind of grading damper | |
CN112240062B (en) | Three-dimensional shock insulation structure system | |
CN107419814A (en) | Grading damper | |
CN103306316A (en) | Three-dimensional composite friction pendulum vibration isolator based on nonlinear energy trap | |
Zhang et al. | Anti-liquefaction characteristics of composite bucket foundations for offshore wind turbines | |
Yong-Chul et al. | Seismic isolation analysis of FPS bearings in spatial lattice shell structures | |
CN206487005U (en) | A kind of earthquake-resistant structure | |
CN201053103Y (en) | Ball-type vibration reducing obstructing support base | |
CN114197495A (en) | Anti-slide pile | |
CN101413297B (en) | Large-tonnage vertical shock insulation damping device | |
CN201416608Y (en) | Inner wall extrusion and friction type shape memory alloy twisting resistant energy dissipater | |
Arathy et al. | Analysis of friction pendulum bearing isolated structure | |
CN201217964Y (en) | Shock-resistant construction | |
CN114790785B (en) | Large-bearing-capacity high-energy-consumption three-dimensional shock insulation support suitable for building structure | |
CN105840725A (en) | Screw vibration-reduction shock isolator | |
CN107700913B (en) | Multidimensional high-performance damper | |
CN201588304U (en) | Simple pendulum composite three-dimensional shock insulation support | |
CN101539181A (en) | Inner-wall extrusion friction type shape memory alloy twisting energy absorber | |
CN209397758U (en) | A kind of anti-seismic structure of assembled architecture | |
CN201053102Y (en) | Basin-type vibration reducing obstructing support base | |
CN107747277B (en) | A kind of replaceable units formula high-damping shock isolating pedestal and shock-dampening method | |
CN107217583B (en) | A kind of continuous bridge strut damping device of acceleration activation | |
CN208918054U (en) | A kind of wall energy-consuming device using viscous damper | |
CN208441123U (en) | A kind of building stake applied to architectural engineering |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20180517 |
|
CF01 | Termination of patent right due to non-payment of annual fee |