CN205663055U - Adjustable fire prevention viscoelastic damper of damping force - Google Patents
Adjustable fire prevention viscoelastic damper of damping force Download PDFInfo
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- CN205663055U CN205663055U CN201620147316.8U CN201620147316U CN205663055U CN 205663055 U CN205663055 U CN 205663055U CN 201620147316 U CN201620147316 U CN 201620147316U CN 205663055 U CN205663055 U CN 205663055U
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- steel plate
- side steel
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- damping force
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Abstract
The utility model discloses an adjustable fire prevention viscoelastic damper of damping force, include: first side steel sheet, second side steel sheet, middle steel sheet, glutinous elastic damping layer and step up the device, wherein, first side steel sheet second side steel sheet with rely on the fastening of glutinous elastic damping layer to bond between the middle steel sheet. It will to step up the device first side steel sheet with second side steel sheet steps up to can adjust the dynamics of stepping up. Adjustable fire prevention viscoelastic damper of damping force has fireproof heat -insulating function, has higher damping force and equivalent damping than, better energy dissipation shock attenuation effect and two -way power -wasting viscoelastic damper, can use in order to improve its safety in utilization in wideer temperature range simultaneously.
Description
Technical field
This utility model relates to building structure energy-dissipating and shock-absorbing technical field, is specifically related to a kind of damping force scalable fire prevention glutinous
Elastic damper.
Background technology
Viscoelastic damper, as a kind of cushion technique device, has bigger energy dissipation capacity, and its thickness is less, arranges not
Need to take the whole standard width of a room in an old-style house, be more useful in house application.It is mainly characterized by: to wind-induced vibration and geological process, all can obtain
Obtain effectiveness in vibration suppression well；Damping wall parameter can be freely designed according to construction scope and damping requirement；Product may be provided at wall
In, do not affect building and use function.
Viscoelastic damper is many from structure design angle, improves the energy-dissipating and shock-absorbing effect of viscoelastic damper, typically
Being formed by three-ply plate and two layers of viscous-elastic material alternate combinations, antivibrator is installed in the structure by connector.When structure is subject to
To earthquake, wind shake time, structure interlayer generation relative displacement, middle steel plate, side steel plate generation relative motion, drive viscoelasticity material
Expect that reciprocal detrusion is generated heat, loss of energy, it is achieved the purpose of energy-dissipating and shock-absorbing.
But viscoelastic damper does not have fire-proof function at present, is highly vulnerable to breakage when breaking out of fire and causes and can not effectively play
This effect having of viscoelastic damper.Meanwhile, current self energy dissipation capacity of viscoelasticity damping material is less and at different temperatures ring
Under border, performance change is the most obvious so that the use temperature range of viscoelastic damper is restricted.
Therefore, research and develop and a there is fire-proof and thermal-insulation function, there is more high damping force and equivalent damping ratio, more preferable energy dissipating subtract
Shake effect and the viscoelastic damper of two-way power consumption, can use to improve its safety in utilization in more wide temperature range simultaneously
Necessitate.
Utility model content
This utility model provides a kind of damping force scalable fire prevention viscoelastic damper, including: the first side steel plate, second
Side steel plate, middle steel plate, viscoelasticity damping layer, fire proof heat-insulation layer and clamping device, wherein, described first side steel plate, described
Rely on the fastening of viscoelasticity damping layer bonding between two side steel plates and described middle steel plate.Described clamping device is by described first side steel
Plate and described second side steel plate step up, and can regulate the dynamics stepped up.
According to an embodiment of the present utility model, farther include: the first fire proof heat-insulation layer and the second fire-proof and thermal-insulation
Layer, wherein, described first fire proof heat-insulation layer wraps up described viscoelasticity damping layer, and described second fire proof heat-insulation layer is arranged at described the
Side steel plate, described second side steel plate and the surface of described middle steel plate.
According to an embodiment of the present utility model, described first side steel plate and the length of described second side steel plate and width
Spending identical, the width of described first side steel plate and described second side steel plate is more than the width of described middle steel plate.
According to an embodiment of the present utility model, described clamping device includes screw bolt and nut, wherein, and described first
Side steel plate is provided with the first chute and the second chute along its length, and described second side steel plate is provided with and first along its length
The 3rd chute that chute is corresponding and fourth chute corresponding with the second chute, bolt is by described first chute and described the
Three chutes, the second chute and the 4th chute can run through described first side steel plate and described second side steel plate and be connected with nut
Connect.
According to an embodiment of the present utility model, described clamping device includes ribbed stiffener, the second bolt and the second spiral shell
Mother, wherein, described first side steel plate and described second side steel plate outer surface are provided with ribbed stiffener, and described ribbed stiffener passes through the second spiral shell
Bolt and the second nut are connected to each other.
According to an embodiment of the present utility model, described first fire proof heat-insulation layer includes fire resistant cloth and high temperature
Heat insulation composite material, wherein, described fire resistant cloth wraps described high-temperature heat insulation composite.
According to an embodiment of the present utility model, described fire resistant cloth is ceramic fiber cloth or high silica cloth.
According to an embodiment of the present utility model, described high-temperature heat insulation composite is that silicon dioxide and silicon titanium are combined
Material.
According to an embodiment of the present utility model, described second fire proof heat-insulation layer is fire-resistant coating for steel structure.
According to an embodiment of the present utility model, described ribbed stiffener is at least 6, and symmetry is also distributed in described first
Side steel plate and the outer surface of described second side steel plate, described ribbed stiffener two ends are provided with bolt hole, and with the second bolt and the second spiral shell
Two symmetrical ribbed stiffeners of female connection.
According to an embodiment of the present utility model, the thickness of described first fire proof heat-insulation layer is 20mm-60mm, described
The thickness of the second fire proof heat-insulation layer is 2～5mm.
According to an embodiment of the present utility model, the lower surface of described first side steel plate, described first side steel plate
The upper and lower surface of upper surface and described middle steel plate is plane or male and fomale(M&F).
According to an embodiment of the present utility model, described first side steel plate and described middle steel plate pass through vulcanization
It is connected with described viscoelasticity damping layer.
Damping force scalable described in the utility model fire prevention viscoelastic damper has fire-proof and thermal-insulation function, has more high resistant
Buddhist nun's power and equivalent damping ratio, more preferable energy-dissipating and shock-absorbing effect and the viscoelastic damper of two-way power consumption, simultaneously can be in wider temperature
Use in the range of degree to improve its safety in utilization.
Accompanying drawing explanation
By reading the detailed description of hereafter preferred implementation, various other advantage and benefit common for this area
Technical staff will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and is not considered as this practicality
Novel restriction.And in whole accompanying drawing, it is denoted by the same reference numerals identical parts.The most in the accompanying drawings, reference
Alphabetic flag after numeral indicates multiple identical parts, when referring to these parts, will omit its last alphabetic flag.
In the accompanying drawings:
Fig. 1 shows the damping force scalable fire prevention viscoelastic damper according to an embodiment of the present utility model
Sectional view；
Fig. 2 shows the damping force scalable fire prevention viscoelastic damper according to an embodiment of the present utility model
Top view；
Fig. 3 shows the damping force scalable fire prevention viscoelastic damper according to an embodiment of the present utility model
Upward view；
Fig. 4 shows the damping force scalable fire prevention viscoelastic damper according to an embodiment of the present utility model
Sectional view；
Fig. 5 shows the damping force scalable fire prevention viscoelastic damper according to an embodiment of the present utility model
Top view；
Fig. 6 shows the damping force scalable fire prevention viscoelastic damper according to an embodiment of the present utility model
Upward view.
In the accompanying drawings, use same or similar label to refer to same or similar element.
Detailed description of the invention
The utility model will be further described with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 shows the damping force scalable fire prevention viscoelastic damper according to an embodiment of the present utility model
Sectional view.
As it is shown in figure 1, damping force scalable fire prevention viscoelastic damper include first side steel plate the 1, second side steel plate 2 and
Middle steel plate 3, viscoelasticity damping layer 4 and clamping device, wherein, between first side steel plate the 1, second side steel plate 2 and middle steel plate 3
Viscoelasticity damping layer 4 is relied on to fasten bonding.In further embodiment, the quantity of middle steel plate 3 is multiple, the first side steel plate 1
Also it is multiple with the quantity of the second side steel plate 2 so that middle steel plate the 3, first side steel plate 1 and the second side steel plate 2 are suitable.Glutinous bullet
Property damping layer 4 is made up of viscoelasticity damping material, and viscoelasticity damping material is a kind of material being dedicated as damping layer, and it is main
Feature is relevant with temperature and frequency, frequency height to or temperature low to certain degree time, it is glassy state, loses damping property；
When low frequency or high temperature, it is rubbery state, damps the least；Only when intermediate frequency and moderate temperature, damping maximum, during elasticity takes
Equivalent.First side steel plate 1 and the second side steel plate 2 are stepped up by clamping device, and can be adjusted by regulation clamping device
Joint steps up dynamics, such that it is able to the damping force of damping adjusting device and equivalent damping ratio, makes the Applicable temperature model of viscoelastic damper
Enclose and broaden, make energy-dissipating and shock-absorbing ability further be promoted simultaneously.
According to an embodiment of the present utility model, as it is shown in figure 1, damping force scalable fire prevention viscoelastic damper enters
One step includes: the first fire proof heat-insulation layer 5-1 and the second fire proof heat-insulation layer 5-2, wherein, and described first fire proof heat-insulation layer 5-1 parcel
Described viscoelasticity damping layer 4, described second fire proof heat-insulation layer 5-2 is arranged at described first side steel plate 1, described second side steel plate 2
Surface with described middle steel plate 3.So that antivibrator has fire-proof and thermal-insulation function, can make in more wide temperature range simultaneously
In order to improve its safety in utilization.
According to an embodiment of the present utility model, the first side steel plate 1 and length and width phase of the second side steel plate 2
With, the width of the first side steel plate 1 and the width of the second side steel plate 2 are more than the width of middle steel plate 3.Width due to middle steel plate 3
Degree is less than width and the width of the second side steel plate 2 of the first side steel plate 1, so that in embodiment below, bolt is permissible
Through the first side steel plate 1 and the second side steel plate 2, and not with middle steel plate 3, viscoelasticity damping layer 4 and the first fire proof heat-insulation layer 5-1
Contact, the width of middle steel plate 6 is less than width and the width of the second side steel plate 2 of the first side steel plate 1, thinks viscoelasticity damping layer
4 and first fire proof heat-insulation layer 5-1 provide certain space, ensure that viscoelastic damper has two-way energy dissipation capacity simultaneously.
According to an embodiment of the present utility model, the first fire proof heat-insulation layer 5-1 includes fire resistant cloth and high temperature
Heat insulation composite material, wherein, described fire resistant cloth wraps described high-temperature heat insulation composite.Thus ensure that antivibrator
Fire resistance, it is ensured that antivibrator use security performance.
According to an embodiment of the present utility model, described fire resistant cloth is ceramic fiber cloth or high silica cloth.
Ceramic fiber cloth have the following characteristics that high temperature resistant, heat conductivity is low, anti-thermal shock, low heat capacity；Excellent high temperature insulation characteristic, makes
Use the life-span long；There is good low temperature and elevated temperature strength；Nontoxic, harmless, environment is had no adverse effects.High silica cloth is a kind of resistance to
High temperature inorganic fiber, its silicon dioxide (SiO2) content higher than 96%, softening point close to 1700 DEG C, life-time service at 900 DEG C,
Working under the conditions of 1450 DEG C 10 minutes, work 15 seconds and still remain intact state under the conditions of 1600 DEG C, high silica refractory fiber cloth has
There is intensity high, easily process, the feature that purposes is wide, as ablation high temperature resistant, resistance to, heat insulation, insulation material.
According to an embodiment of the present utility model, described high-temperature heat insulation composite is that silicon dioxide and silicon titanium are combined
Material.
According to an embodiment of the present utility model, described second fire proof heat-insulation layer 5-2 is fire-resistant coating for steel structure, if
It is placed in described first side steel plate 1, described second side steel plate 2 and the surface of described middle steel plate 6.Second fire proof heat-insulation layer is effective
Ensure that the fire protecting performance of antivibrator.Fire resistant coating is made up of fire-resistant coating for steel structure.Fire resistant coating ensures that steel construction will not be again
High-temperature will lose bearing capacity, the problem the biggest deformation occurring, can not being continuing with because of excessive deformation.
According to an embodiment of the present utility model, the lower surface of the first side steel plate 1, the upper surface of the second side steel plate 2
It is plane or male and fomale(M&F) with the upper and lower surface of middle steel plate 3.The following table of the first side steel plate 1 being connected with viscoelasticity damping layer 4
Face, the upper surface of the second side steel plate 2 can be plane, it is also possible to for male and fomale(M&F), preferably male and fomale(M&F), so that the first side
The upper surface of steel plate the 1, second side steel plate 2 increases with the contact area of viscoelasticity damping layer 4 so that connect individual the most firm.With
Sample, the upper and lower surface of the middle steel plate 3 being connected with viscoelasticity damping layer 4 can be plane, it is also possible to for male and fomale(M&F), preferably
For male and fomale(M&F) so that the contact area of middle steel plate 3 and viscoelasticity damping layer 4 increases so that connect the most firm.
According to an embodiment of the present utility model, the thickness of the first fire proof heat-insulation layer is 20mm-60mm.Fire-proof and thermal-insulation
In the range of the thickness of layer is selected in this, both can guarantee that damping device had good fire protecting performance, can ensure that again in fire protecting performance
Resource is not wasted in the case of excellent.
According to an embodiment of the present utility model, the thickness of the second fire proof heat-insulation layer is 2mm-5mm.Both can guarantee that resistance
Buddhist nun's utensil has good fire protecting performance, can ensure that again and does not waste resource in the case of fire protecting performance is excellent.
Connect according to the first side steel plate 1 of the present utility model, viscoelasticity damping layer 4, middle steel plate 3 and the second side steel plate 2
The diversity of mode, enters damping force scalable of the present utility model fire prevention viscoelastic damper below in conjunction with detailed description of the invention
Row is explained:
Embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, damping force scalable fire prevention viscoelastic damper includes: the first side steel plate 1, second
Side steel plate 2, middle steel plate 3, viscoelasticity damping layer the 4, first fire proof heat-insulation layer 5-1, the second fire proof heat-insulation layer 5-2, bolt 7 and spiral shell
Female 8, wherein, bolt 7 and nut 8 constitute the clamping device in the present embodiment, and middle steel plate 3 quantity is one piece, the first side steel
Plate 1 and the second side steel plate 2 connecting portion are equipped with bolt hole.First both sides along its length, side steel plate 1 edge has the first chute
6-1 and the second chute 6-2, the second side steel plate 2 is provided with the threeth chute 6-3 corresponding for chute 6-1 with first along its length
And the fourth chute 6-4 corresponding for chute 6-2 with second, bolt 7 by described first chute 6-1 and described 3rd chute 6-3,
Second chute 6-2 and the 4th chute 6-4 can run through described first side steel plate 1 and described second side steel plate 2 and be connected with nut 8
Connect.Bolt 7 is connected with nut 8 after described 3rd chute 6-3 through the first chute 6-1, so that the first side steel plate 1 and institute
Stating the upper end compact siro spinning technology of the second side steel plate 2, bolt 7 number supporting with nut 8 is 3, it is to be understood that bolt 7 with
The supporting number of nut 8 is at least 3；Bolt 7 is connected with nut 8 after the second chute 6-2 and the 4th chute 6-4, thus
Making the first side steel plate 1 and the lower end compact siro spinning technology of described second side steel plate 2, bolt 7 number supporting with nut 8 is 3, needs
It being understood that bolt 7 number supporting with nut 8 is at least 3.Bolt along chute slidably can not hinder antivibrator
Occur X to, the detrusion of Y-direction.The width of the first side steel plate 1 and described second side steel plate 2 beyond the distance of middle steel plate 3 is
80mm, the first fire proof heat-insulation layer 5 thickness is 50mm, and the second fire-proof and thermal-insulation layer thickness is 3mm.
Further, this utility model the first side steel plate and described second side steel plate are by setting that screw bolt and nut clamps
Meter, can be made the detrusion of viscoelastic damper not receive restriction, and can be executed viscoelasticity damping layer 4 with side steel plate by bolt
Add intensifying force, by regulating the size of intensifying force under condition of different temperatures, the damping force of damping adjusting device and equivalent damping ratio,
Solve the damping change that viscoelasticity damping layer causes because of variations in temperature, widen the thermal adaptability model of viscoelastic damper
Enclose.In addition the present embodiment design can improve the energy consumption effect of antivibrator.
Embodiment 2
As shown in Figure 4, Figure 5 and Figure 6, damping force scalable fire prevention viscoelastic damper includes: the first side steel plate 1, second
Side steel plate 2, middle steel plate 3, viscoelasticity damping layer the 4, first fire proof heat-insulation layer 5-1, the second fire proof heat-insulation layer 5-2 and step up dress
Putting, clamping device includes ribbed stiffener the 9, second bolt 10 and the second nut 10-2, and middle steel plate 3 quantity is one piece, the first side steel
The surface of plate the 1, second side steel plate 2 and middle steel plate 3 is plane, and the width of the first side steel plate 1 and the second side steel plate 2 is beyond centre
The size of steel plate 3 is 4-8mm, and the first side steel plate 1 and the second side steel plate 2 need not offer chute.First side steel plate 1 and second
Side steel plate 2 outer surface is provided with ribbed stiffener 9, and ribbed stiffener 9 is connected to each other by the second bolt 10 and the second nut 10-2.Described
Ribbed stiffener 9 is 6, and symmetry is also distributed in described first side steel plate 1 and the outer surface of described second side steel plate 2, described ribbed stiffener 9
Two ends are provided with bolt hole, and connect two symmetrical ribbed stiffeners 9 with the second bolt 10 and the second nut 10-2.It is understood that
For, the quantity of ribbed stiffener is at least 6.Can be by regulating the degree of tightness of bolt, the damping force of damping adjusting device and equivalent damping
Ratio.First fire proof heat-insulation layer 5-1 thickness is 60mm, and the second fire proof heat-insulation layer 5-2 thickness is 4mm.
This utility model is by arranging fire proof heat-insulation layer and fire resistant coating, it is ensured that the fire resistance of antivibrator, leads to simultaneously
Cross the design regulation intensifying force size used in embodiment 1 or embodiment 2, damping adjusting device damping force at different temperatures and
Equivalent damping ratio, makes the Applicable temperature scope of viscoelastic damper broaden, makes energy-dissipating and shock-absorbing ability obtain further simultaneously
Promote.
Damping force scalable described in the utility model fire prevention viscoelastic damper has fire-proof and thermal-insulation function, has more high resistant
Buddhist nun's power and equivalent damping ratio, more preferable energy-dissipating and shock-absorbing effect and the viscoelastic damper of two-way power consumption, simultaneously can be in wider temperature
Use in the range of degree to improve its safety in utilization.
It should be noted that the number of applications of middle steel plate and side steel plate is unrestricted in the present embodiment, for satisfied offer
More high-damping shock absorbing effect and the number of plies of viscoelasticity damping layer that arranges is unrestricted, used form of laying and the number of muscle of putting more energy into
Amount all should fall into protection domain of the present utility model.
It should be noted that this utility model is illustrated rather than by above-described embodiment, this utility model is limited
Make, and those skilled in the art can design alternative embodiment without departing from the scope of the appended claims.?
In claim, any reference marks that should not will be located between bracket is configured to limitations on claims.Word " comprises "
Do not exclude the presence of the element or step not arranged in the claims.Word "a" or "an" before being positioned at element is not excluded for depositing
At multiple such elements.If in the unit claim listing equipment for drying, several in these devices can be logical
Cross same hardware branch specifically to embody.Word first, second and third use do not indicate that any order.Can be by this
A little word explanations are title.
Claims (10)
1. a damping force scalable fire prevention viscoelastic damper, it is characterised in that including: the first side steel plate (1), the second side steel
Plate (2), middle steel plate (3), viscoelasticity damping layer (4) and clamping device, wherein,
Described first side steel plate (1), between described second side steel plate (2) and described middle steel plate (3), described viscoelasticity is relied on to hinder
Buddhist nun's layer (4) fastens bonding；
Described first side steel plate (1) and described second side steel plate (2) step up by described clamping device, and can regulate and step up
Dynamics.
Damping force scalable the most according to claim 1 fire prevention viscoelastic damper, it is characterised in that farther include: the
One fire proof heat-insulation layer (5-1) and the second fire proof heat-insulation layer (5-2), wherein, described first fire proof heat-insulation layer (5-1) is wrapped up described glutinous
Elastomeric damping layer (4), described second fire proof heat-insulation layer (5-2) is arranged at described first side steel plate (1), described second side steel plate
And the surface of described middle steel plate (3) (2).
Damping force scalable the most according to claim 1 fire prevention viscoelastic damper, it is characterised in that: described first side steel
Plate (1) is identical with the length and width of described second side steel plate (2), described first side steel plate (1) and described second side steel plate (2)
Width more than the width of described middle steel plate (3).
4. according to the arbitrary described damping force scalable fire prevention viscoelastic damper of claim 1-3, it is characterised in that add described in:
Tight device includes bolt (7) and nut (8), and wherein, described first side steel plate (1) is provided with the first chute (6-along its length
1) and the second chute (6-2), described second side steel plate (2) is provided with corresponding with the first chute (6-1) along its length
Three chutes (6-3) and fourth chute (6-4) corresponding with the second chute (6-2), bolt (7) passes through described first chute (6-
1) can run through with described 3rd chute (6-3), the second chute (6-2) and the 4th chute (6-4) described first side steel plate (1) and
Described second side steel plate (2) is also connected with nut (8).
Damping force scalable the most according to claim 1 fire prevention viscoelastic damper, it is characterised in that: described clamping device
Including ribbed stiffener (9), the second bolt (10) and the second nut (10-2), wherein, described first side steel plate (1) and described second side
Steel plate (2) outer surface is provided with ribbed stiffener (9), described ribbed stiffener (9) by the second bolt (10) and the second nut (10-2) that
This is connected.
Damping force scalable the most according to claim 2 fire prevention viscoelastic damper, it is characterised in that: described first fire prevention
Thermal insulation layer (5-1) includes fire resistant cloth and high-temperature heat insulation composite, and wherein, described fire resistant cloth wraps described
High-temperature heat insulation composite.
Damping force scalable the most according to claim 6 fire prevention viscoelastic damper, it is characterised in that: described high temperature resistant anti-
Fire cloth is ceramic fiber cloth or high silica cloth.
Damping force scalable the most according to claim 2 fire prevention viscoelastic damper, it is characterised in that: described second fire prevention
Thermal insulation layer is fire-resistant coating for steel structure.
Damping force scalable the most according to claim 5 fire prevention viscoelastic damper, it is characterised in that: described ribbed stiffener
(9) be at least 6, symmetrical be also distributed in described first side steel plate (1) and the outer surface of described second side steel plate (2), described in add
Strength rib (9) two ends are provided with bolt hole, and connect two symmetrical ribbed stiffeners with the second bolt (10) and the second nut (10-2)
(9)。
Damping force scalable the most according to claim 2 fire prevention viscoelastic damper, it is characterised in that: described first prevents
The thickness of fire screen thermosphere (5-1) is 20mm-60mm, and the thickness of described second fire proof heat-insulation layer (5-2) is 2～5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147316.8U CN205663055U (en) | 2016-02-26 | 2016-02-26 | Adjustable fire prevention viscoelastic damper of damping force |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147316.8U CN205663055U (en) | 2016-02-26 | 2016-02-26 | Adjustable fire prevention viscoelastic damper of damping force |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525698A (en) * | 2016-02-26 | 2016-04-27 | 云南震安减震科技股份有限公司 | Damping force adjustable fireproof viscoelastic damper |
| CN110145567A (en) * | 2019-04-24 | 2019-08-20 | 上海大学 | A kind of nonlinear energy remittance |
-
2016
- 2016-02-26 CN CN201620147316.8U patent/CN205663055U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525698A (en) * | 2016-02-26 | 2016-04-27 | 云南震安减震科技股份有限公司 | Damping force adjustable fireproof viscoelastic damper |
| CN110145567A (en) * | 2019-04-24 | 2019-08-20 | 上海大学 | A kind of nonlinear energy remittance |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 650000 D-2-4-1 and D-2-4-2 block, Kunming international printing and packing City, Guandu Industrial Zone, Kunming, Yunnan Patentee after: Zhenan Science and Technology Co., Ltd. Address before: 650200 D-2-4-1 and D-2-4-2 block, Kunming international printing and packing City, Guandu Industrial Zone, Kunming, Yunnan Patentee before: Yunnan Zhen An damping Science and Technology Co., Ltd. |