CN203613671U - Shearing and bending combined type staged yield mild steel damper - Google Patents
Shearing and bending combined type staged yield mild steel damper Download PDFInfo
- Publication number
- CN203613671U CN203613671U CN201320805046.1U CN201320805046U CN203613671U CN 203613671 U CN203613671 U CN 203613671U CN 201320805046 U CN201320805046 U CN 201320805046U CN 203613671 U CN203613671 U CN 203613671U
- Authority
- CN
- China
- Prior art keywords
- steel
- mild
- energy
- consumption
- shaped
- 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
- 229910001209 Low-carbon steel Inorganic materials 0.000 title claims abstract description 116
- 238000005452 bending Methods 0.000 title claims abstract description 18
- 238000010008 shearing Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 126
- 239000010959 steel Substances 0.000 claims abstract description 126
- 238000005265 energy consumption Methods 0.000 claims abstract description 94
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 18
- 230000007547 defect Effects 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Landscapes
- Vibration Dampers (AREA)
Abstract
The utility model discloses a shearing and bending combined type staged yielding mild steel damper, which comprises two L-shaped connecting steel plates, a rectangular steel sheet energy dissipation assembly, a circular mild steel energy dissipation assembly, an X-shaped mild steel energy dissipation steel sheet and a hoop piece; the two L-shaped connecting steel plates are oppositely arranged, and the rectangular steel sheet energy consumption assembly, the circular soft steel energy consumption assembly and the X-shaped soft steel energy consumption steel sheet are transversely arranged between the two L-shaped connecting steel plates; the rectangular steel sheet energy dissipation assembly is composed of a rectangular soft steel energy dissipation steel sheet and a rectangular steel sheet connecting plate, the round soft steel energy dissipation assembly is composed of a round soft steel energy dissipation rod and a round rod connecting plate, and the rectangular steel sheet connecting plate and the round rod connecting plate are connected with the L-shaped connecting steel plate through high-strength bolts respectively. The utility model discloses solved traditional attenuator shock attenuation power consumption level single defect effectively, easily installed moreover and changed, the space occupancy is little, less, the atress is clear stage by stage to building function and outward appearance influence and have that the ability that the energy consumption is strong, practicality and durability are good.
Description
Technical field
The utility model belongs to civil engineering antidetonation and damping field, relate in particular to the metal energy-dissipation damper in the passive energy dissipation control system of structure, be specifically a kind of can be for increasing building structure damping, reduce the novel shearing and the bending combined mild steel damper of surrendering stage by stage of structural earthquake response.
Background technology
Metal energy-dissipation damper is that the hysteresis of utilizing the different forms of the composition of metal material to enter after plasticity consumes energy.Because the metal material such as mild steel have good hysteresis ability after entering plasticity, thereby be widely used and manufacture various forms of dampers.From stress form, can be divided into axial surrender type, shear yielding type, bending surrender type and torque yield type damper.Common damper product has at present: X-type and triangle damper, shearing-type mild steel damper, torsion beam energy consumer, bent beam energy consumer, the capable steel plate damper of U, rod iron energy consumer, Behavior of Circular Ring Energy Dissipator, the Behavior of Circular Ring Energy Dissipator etc. of putting more energy into.With respect to dampers such as viscous damping device, viscoelastic dampers, metal damper has the plurality of advantages such as easy processing, easy care, hysteretic energy ability is stable, and what be therefore widely used in engineering structures subtracts shock insulation field.
Current existing damper is large multi-form single, the requirement when cannot meeting little shake, middle shake simultaneously and shaking greatly.Many dampers only work under large shake, and when little shake, damper is in elastic stage, and energy is dissipated by agent structure, thereby has caused agent structure damage to a certain extent; Other damper yield displacement is less, and little shake surrender power consumption is good, in the time of large shake, also has good power consumption, but that this class damper adds to the rigidity of structure is also larger, causes on the contrary the increase of geological process.On the other hand, in the time of little shake, damper has just entered plastic strain, and needs all to change without large shake, and economy is poor like this.And earthquake is also generally accompanied by principal earthquake, aftershock or group's shake, and after aftershock can follow principal earthquake closely mostly, and earthquake magnitude is often larger, and perdurabgility is longer, therefore the power consumption of research and development multistage and the strong damper of energy dissipation capacity become the task of top priority.
Utility model content
The purpose of this utility model is the single defect of power consumption existing for existing metal energy-dissipation damper, has proposed a kind of novel shearing and the bending combined mild steel damper of surrendering stage by stage that can realize according to the size of earthquake different power consumption states.
The technical solution adopted in the utility model is: a kind of shearing and the bending combined mild steel damper of surrendering stage by stage, comprises two L shaped junction steel plates, rectangle steel disc power consumption assembly, circular mild-steel energy-consumption assembly, X-shaped mild-steel energy-consumption steel disc and cuff elements;
Described two L shaped junction steel plates are oppositely arranged, and described rectangle steel disc power consumption assembly, circular mild-steel energy-consumption assembly, X-shaped mild-steel energy-consumption steel disc are laterally arranged between two L shaped junction steel plates;
Described rectangle steel disc power consumption assembly is made up of rectangle mild-steel energy-consumption steel disc and rectangle steel disc junction plate, and the two ends of two parallel rectangle mild-steel energy-consumption steel discs that arrange are welded with rectangle steel disc junction plate; Described circular mild-steel energy-consumption assembly is made up of with circular rod junction plate circular mild-steel energy-consumption rod, and the two ends of two parallel circular mild-steel energy-consumption rods that arrange are welded with circular rod junction plate;
Described rectangle steel disc junction plate is connected with L shaped junction steel plate by high-strength bolt respectively with circular rod junction plate, and L shaped junction steel plate is stretched out at the two ends of described X-shaped mild-steel energy-consumption steel disc, and is connected with cuff elements;
The face of described rectangle mild-steel energy-consumption steel disc is arranged to horizontal plane, and the face of X-shaped mild-steel energy-consumption steel disc is arranged to vertical plane.
As preferably, described rectangle mild-steel energy-consumption steel disc, circular mild-steel energy-consumption rod, X-shaped mild-steel energy-consumption steel disc adopt the mild steel of yield strength between 100MPa-225MPa to make.
As preferably, the steel that described L shaped junction steel plate, rectangle steel disc junction plate, circular rod junction plate and cuff elements adopt yield strength to be more than or equal to 235MPa are made.
As preferably, described rectangle steel disc power consumption assembly, circular mild-steel energy-consumption assembly, X-shaped mild-steel energy-consumption steel disc are laterally arranged on two arrangement modes between L shaped junction steel plate and are: be made up of upper and lower two row side by side, every row are all that rectangle steel disc power consumption assembly is that circular mild-steel energy-consumption assembly, circular mild-steel energy-consumption assembly two outsides are X-shaped mild-steel energy-consumption steel discs in both sides middle, rectangle steel disc power consumption assembly.
As preferably, the horizontal plane part of described L shaped junction steel plate is connected with building structure by high-strength bolt.
The utility model has the following advantages compared to existing technology:
The utility model is by adopting the mild-steel energy-consumption assembly composition of difformity and power consumption mode, rectangle steel disc power consumption assembly, circular mild-steel energy-consumption assembly and X-shaped steel disc power consumption steel disc are arranged in the cavity of L shaped junction steel plate, wherein rectangle mild-steel energy-consumption assembly initial stiffness is large, energy dissipation capacity strong, yield displacement is less, belong to shearing-type, when little shake, the less displacement of rectangle mild-steel energy-consumption steel disc experience can enter plasticity power consumption; Circular mild-steel energy-consumption assembly initial stiffness is little compared with rectangle mild-steel energy-consumption steel disc, strong and the good toughness of energy dissipation capacity, belongs to and cuts curvedly, and while entering middle shake, circular mild-steel energy-consumption assembly progressively enters plasticity and consumes energy, jointly consume energy with rectangle mild-steel energy-consumption steel disc, play good transitional function simultaneously; X-shaped mild-steel energy-consumption steel disc initial stiffness is little, yield displacement is larger, belong to flexure type, when large shake, X-shaped mild-steel energy-consumption steel disc starts surrender, jointly consumes energy, thereby realize the effect that surrender is consumed energy stage by stage of damper with rectangle mild-steel energy-consumption steel disc and circular mild-steel energy-consumption assembly.
The utility model has solved the single defect of conventional damper damping power consumption level effectively, and be easy to install change, space occupancy is little, function and less, stressed clear, the low cost of manufacture stage by stage of appearance effects to building, and have that the ability of power consumption is strong, practicality and good endurance.
The utility model, in actual engineering design, can regulate the parameters such as the size, quantity, material of building block to make the damper of different initial stiffnesses, plasticity hysteretic energy ability according to actual requirement.
Accompanying drawing explanation
Fig. 1 is damper perspective view of the present utility model;
Fig. 2 is damper internal placement schematic diagram of the present utility model;
Fig. 3 is rectangle steel disc power consumption modular construction schematic diagram of the present utility model;
Fig. 4 is circular mild-steel energy-consumption modular construction schematic diagram of the present utility model;
Fig. 5 is damper installation structure side schematic view of the present utility model;
Fig. 6 is the schematic diagram that in the middle of damper of the present utility model adopts in building structure, column type is installed;
Fig. 7 is the schematic diagram that damper of the present utility model adopts support type to install in building structure.
Wherein: 1-L shaped junction steel plate; 2-rectangle mild-steel energy-consumption steel disc; 3-rectangle steel disc junction plate; 4-circular mild-steel energy-consumption rod; 5-circular rod junction plate; 6-X-shaped mild-steel energy-consumption steel disc; 7-cuff elements; 8-rectangle steel disc power consumption assembly; 9-circular mild-steel energy-consumption assembly.
The specific embodiment
Below in conjunction with the specific embodiment and accompanying drawing, the utility model is described further:
As Figure 1-5: a kind of shearing and the bending combined mild steel damper of surrendering stage by stage, this damper is made up of two L shaped junction steel plates 1, rectangle mild-steel energy-consumption steel disc 2, rectangle steel disc junction plate 3, circular mild-steel energy-consumption rod 4, circular rod junction plate 5, X-shaped mild-steel energy-consumption steel disc 6 and cuff elements 7; Wherein, two parallel rectangle mild-steel energy-consumption steel discs that arrange 2 form rectangle steel disc power consumption assembly 8 with upper and lower two rectangle steel disc junction plates, 3 vertical weldings; Two circular mild-steel energy-consumption rods 4 form circular mild-steel energy-consumption assembly 9 with upper and lower two circular rod junction plate 5 vertical weldings; Rectangle steel disc power consumption assembly 8, circular mild-steel energy-consumption assembly 9 can be connected with L shaped junction steel plate 1 by high-strength bolt respectively; X-shaped mild-steel energy-consumption steel disc 6 is connected with cuff elements 7 with the part that L shaped junction steel plate 1 is stretched out at two ends.Wherein the quantity of X-shaped mild-steel energy-consumption steel disc 6, rectangle steel disc power consumption assembly 8 and circular mild-steel energy-consumption assembly 9 can be selected according to actual requirement of engineering; The horizontal plane part of L shaped side steel plate 1 is connected with building structure by high-strength bolt.
Shearing of the present utility model is to rely on mild steel material to enter under external force plastic state hysteretic energy to absorb energy with the bending combined mild steel damper of surrendering stage by stage.In order to allow damper can enter as soon as possible duty, the yield strength of power consumption material mild steel should not be too high and be had larger ductility, so rectangle mild-steel energy-consumption steel disc 2, circular mild-steel energy-consumption rod 4, X-shaped mild-steel energy-consumption steel disc 6 adopt the mild steel of yield strength between 100MPa-225MPa to make, its size can require to determine according to power consumption in practical solution.For guaranteeing the stable of damper performance, the steel that L shaped junction steel plate 1, rectangle steel disc junction plate 3, circular rod junction plate 5 and cuff elements 7 all adopt yield strength to be not less than 235MPa are made, and have certain thickness in addition.In actual engineering design, can regulate the parameters such as the size, quantity, material of building block to make the damper of different initial stiffnesses, plasticity hysteretic energy ability according to actual requirement.
When in the middle of the utility model adopts, column type is arranged in building structure, as shown in Figure 6, several shearings are combined with the bending combined mild steel damper of surrendering stage by stage, are installed in the agent structure of building.Shear and be connected with the upper beam of floor by high-strength bolt with the top levels part of the combined L shaped side steel plate of surrendering stage by stage mild steel damper top of bending, the bottom level face portion of the L shaped side steel plate 1 of bottom is supported and is connected with the wall type of floor bottom by high-strength bolt.In the time there is earthquake, two L shaped side steel plates in each damper produce relative displacement, when little shake, because rectangle mild-steel energy-consumption assembly yield displacement is less, first start to carry out plastic deformation energy dissipation when very little displacement, this is the power consumption of first stage, seismic energy can dissipate little shake time; When middle shake, circular mild-steel energy-consumption assembly initial stiffness is little compared with rectangle mild-steel energy-consumption assembly, strong and the good toughness of energy dissipation capacity, belong to cut curved, while entering middle shake, circular mild-steel energy-consumption assembly progressively enters plasticity power consumption, jointly consume energy with rectangle mild-steel energy-consumption assembly, play good transitional function, this is second stage surrender power consumption simultaneously; When large shake because X-shaped mild-steel energy-consumption steel disc initial stiffness is little, yield displacement is larger, belong to flexure type, while shake greatly, X-shaped mild-steel energy-consumption steel disc starts surrender, jointly consumes energy with rectangle mild-steel energy-consumption assembly and circular mild-steel energy-consumption assembly, dissipation seismic energy, this is phase III surrender power consumption.In actual use, the quantity of X-shaped mild-steel energy-consumption steel disc is relatively many, can be used as power consumption deposit and consume more energy in the time of large shake, finally protects the object of agent structure safety.
When the utility model adopts support type to be arranged in building structure, as shown in Figure 7, several shearings are combined with the bending combined mild steel damper of surrendering stage by stage, are installed in the agent structure of building.Shear and be connected with the upper beam of floor by high-strength bolt with the top levels part of the combined L shaped side steel plate of surrendering stage by stage mild steel damper top of bending, the herringbone steel arranging on the girder of the bottom level face portion of the L shaped side steel plate of bottom by high-strength bolt and floor bottom supports and is connected, supports the effect of fixing damper of playing.In the time there is earthquake, two L shaped side steel plates in each damper produce relative displacement, when little shake, because rectangle mild-steel energy-consumption assembly yield displacement is less, first start to carry out plastic deformation energy dissipation when very little displacement, this is the power consumption of first stage, seismic energy can dissipate little shake time; When middle shake, circular mild-steel energy-consumption assembly initial stiffness is little compared with rectangle mild-steel energy-consumption assembly, strong and the good toughness of energy dissipation capacity, belong to cut curved, while entering middle shake, circular mild-steel energy-consumption assembly progressively enters plasticity power consumption, jointly consume energy with rectangle mild-steel energy-consumption assembly, play good transitional function, this is second stage surrender power consumption simultaneously; When large shake because X-shaped mild-steel energy-consumption steel disc initial stiffness is little, yield displacement is larger, belong to flexure type, while shake greatly, X-shaped mild-steel energy-consumption steel disc starts surrender, jointly consumes energy with rectangle mild-steel energy-consumption assembly and circular mild-steel energy-consumption assembly, dissipation seismic energy, this is phase III surrender power consumption.In actual use, the quantity of X-shaped mild-steel energy-consumption steel disc is relatively many, can be used as power consumption deposit and consume more energy in the time of large shake, finally protects the object of agent structure safety.
The above is only preferred embodiment of the present utility model; be noted that for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. shearing and the bending combined mild steel damper of surrendering stage by stage, is characterized in that: comprise two L shaped junction steel plates, rectangle steel disc power consumption assembly, circular mild-steel energy-consumption assembly, X-shaped mild-steel energy-consumption steel disc and cuff elements;
Described two L shaped junction steel plates are oppositely arranged, and described rectangle steel disc power consumption assembly, circular mild-steel energy-consumption assembly, X-shaped mild-steel energy-consumption steel disc are laterally arranged between two L shaped junction steel plates;
Described rectangle steel disc power consumption assembly is made up of rectangle mild-steel energy-consumption steel disc and rectangle steel disc junction plate, and the two ends of two parallel rectangle mild-steel energy-consumption steel discs that arrange are welded with rectangle steel disc junction plate; Described circular mild-steel energy-consumption assembly is made up of with circular rod junction plate circular mild-steel energy-consumption rod, and the two ends of two parallel circular mild-steel energy-consumption rods that arrange are welded with circular rod junction plate;
Described rectangle steel disc junction plate is connected with L shaped junction steel plate by high-strength bolt respectively with circular rod junction plate, and L shaped junction steel plate is stretched out at the two ends of described X-shaped mild-steel energy-consumption steel disc, and is connected with cuff elements;
The face of described rectangle mild-steel energy-consumption steel disc is arranged to horizontal plane, and the face of X-shaped mild-steel energy-consumption steel disc is arranged to vertical plane.
2. shearing according to claim 1 and the bending combined mild steel damper of surrendering stage by stage, is characterized in that: described rectangle mild-steel energy-consumption steel disc, circular mild-steel energy-consumption rod, X-shaped mild-steel energy-consumption steel disc adopt the mild steel of yield strength between 100MPa-225MPa to make.
3. shearing according to claim 1 and the bending combined mild steel damper of surrendering stage by stage, is characterized in that: the steel that described L shaped junction steel plate, rectangle steel disc junction plate, circular rod junction plate and cuff elements adopt yield strength to be more than or equal to 235MPa are made.
4. shearing according to claim 1 and the bending combined mild steel damper of surrendering stage by stage, it is characterized in that: described rectangle steel disc power consumption assembly, circular mild-steel energy-consumption assembly, X-shaped mild-steel energy-consumption steel disc are laterally arranged on two arrangement modes between L shaped junction steel plate and are: be made up of upper and lower two row side by side, every row are all that rectangle steel disc power consumption assembly is that circular mild-steel energy-consumption assembly, circular mild-steel energy-consumption assembly two outsides are X-shaped mild-steel energy-consumption steel discs in both sides middle, rectangle steel disc power consumption assembly.
5. shearing according to claim 1 and the bending combined mild steel damper of surrendering stage by stage, is characterized in that: the horizontal plane part of described L shaped junction steel plate is connected with building structure by high-strength bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320805046.1U CN203613671U (en) | 2013-12-09 | 2013-12-09 | Shearing and bending combined type staged yield mild steel damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320805046.1U CN203613671U (en) | 2013-12-09 | 2013-12-09 | Shearing and bending combined type staged yield mild steel damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203613671U true CN203613671U (en) | 2014-05-28 |
Family
ID=50766327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320805046.1U Expired - Fee Related CN203613671U (en) | 2013-12-09 | 2013-12-09 | Shearing and bending combined type staged yield mild steel damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203613671U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696502A (en) * | 2013-12-09 | 2014-04-02 | 南京工业大学 | Shearing and bending combined type staged yield mild steel damper |
| CN106193360A (en) * | 2016-09-05 | 2016-12-07 | 南京工业大学 | Can overcome soft steel attenuator dismantled of membrane effect |
| CN107882202A (en) * | 2017-12-20 | 2018-04-06 | 河北工业大学 | Self-resetting mild steel damper and assembling work progress |
| CN110886403A (en) * | 2019-11-22 | 2020-03-17 | 山东彤创建筑科技有限公司 | Novel combined shearing bending damper |
| CN111173155A (en) * | 2020-01-07 | 2020-05-19 | 海南大学 | Shearing-bending parallel connection type graded energy dissipation damper |
-
2013
- 2013-12-09 CN CN201320805046.1U patent/CN203613671U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696502A (en) * | 2013-12-09 | 2014-04-02 | 南京工业大学 | Shearing and bending combined type staged yield mild steel damper |
| CN106193360A (en) * | 2016-09-05 | 2016-12-07 | 南京工业大学 | Can overcome soft steel attenuator dismantled of membrane effect |
| CN107882202A (en) * | 2017-12-20 | 2018-04-06 | 河北工业大学 | Self-resetting mild steel damper and assembling work progress |
| CN110886403A (en) * | 2019-11-22 | 2020-03-17 | 山东彤创建筑科技有限公司 | Novel combined shearing bending damper |
| CN111173155A (en) * | 2020-01-07 | 2020-05-19 | 海南大学 | Shearing-bending parallel connection type graded energy dissipation damper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103696502A (en) | Shearing and bending combined type staged yield mild steel damper | |
| CN102635176B (en) | Shearing and bending combined type staged yield mild steel damper | |
| CN203613671U (en) | Shearing and bending combined type staged yield mild steel damper | |
| CN202544161U (en) | Shearing and bending combined type staged yield mild steel damper | |
| CN203769109U (en) | Combined multi-stage yielding mild steel damper | |
| CN201785889U (en) | Novel energy-dissipation vibration damper | |
| CN102444219B (en) | Mild steel yielding and friction combined damper | |
| CN102425245B (en) | Mild steel and lead laminated plate damper | |
| CN103899004B (en) | One is energy consumer stage by stage | |
| CN203066282U (en) | Series-parallel combination U-shaped bi-directional soft steel energy dissipation damper | |
| CN102011439B (en) | Staged Yield Type Mild Steel Damper | |
| CN102926480A (en) | Compound mild steel damper with holes and ribs | |
| CN203846635U (en) | Two-stage mixed energy dissipation and shock absorption device | |
| CN106401003A (en) | Multi-working condition work mild steel energy dissipation machine | |
| CN105064525A (en) | Bent type staged yield metal damper | |
| CN103541452A (en) | Mild steel and friction damper | |
| CN109826338A (en) | A kind of cold bending thin wall steel plate wall system of built-in friction and negative stiffness combined vibration-damping device | |
| CN103388361A (en) | Splint-type metal energy dissipation damper | |
| CN103556748B (en) | Improve method and the device of building or antivibration capability of bridge | |
| CN201865214U (en) | Staged Yield Type Mild Steel Damper | |
| CN203188399U (en) | Metal damper utilizing steel plate surface internal deformation to consume energy | |
| CN203977609U (en) | A kind of energy consumer stage by stage | |
| CN204456490U (en) | The combined sinker of metal stage by stage | |
| CN103290945A (en) | Steel bar array damper | |
| CN103790254A (en) | Steel and lead laminated annular damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20171209 |