CN206157919U - Connected node of prefab - Google Patents
Connected node of prefab Download PDFInfo
- Publication number
- CN206157919U CN206157919U CN201620784264.5U CN201620784264U CN206157919U CN 206157919 U CN206157919 U CN 206157919U CN 201620784264 U CN201620784264 U CN 201620784264U CN 206157919 U CN206157919 U CN 206157919U
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- CN
- China
- Prior art keywords
- prefabricated component
- connecting node
- prefab
- connector
- prefabricated
- 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.)
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- 239000002002 slurry Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000007569 slipcasting Methods 0.000 claims description 7
- 238000004078 waterproofing Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 10
- 238000011065 in-situ storage Methods 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 210000003195 fascia Anatomy 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
Abstract
The utility model belongs to the technical field of building engineering, a connected node of prefab is disclosed, a connected node of prefab, two prefabs are close pieces together the butt joint, the concatenation end of two prefabs all be provided with the connecting piece, the connecting piece adopts bolted connection, the operation mouth has all been seted up to the concatenation end of two prefabs. In the assembling process of prefab, two arbitrary one of prefabs good back in position that falls is hoisted another and is made the two secretly piece together the butt joint, then through the operation mouthful use the bolt respectively pre -buried connecting piece in two prefabs connect into whole, so, realize the connection of prefab, the two forms whole common atress. The utility model discloses a prefab adopts the secret to piece together the butt joint, need not cast in situ concrete in assembling process, the cost saving, and construction speed is fast, and construction cycle is short, connects into whole through sleeve and connecting piece between the prefab, has increased the taut ability of prefab connection, satisfies the building quality and the specifications that construct.
Description
Technical field
The utility model belongs to construction engineering technical field, and in particular to a kind of connecting node of prefabricated component.
Background technology
Assembled architecture is built relative to conventional steel bar concrete field cast-in-place formula, a undoubtedly technical much progress,
The prefabricated components factorial praluction of assembled architecture, Assembling, thus energy factory normalization production, it is quality controllable, it is efficiently fast
Victory, material economy is without waste, production scene and job site non-environmental-pollution.But, it is pre- in assembled architecture in prior art
In the assembling process of product, still there is node to need using cast-in-place, the such as connection of shear wall and floor, for stable connection, building
Plate would generally adopt laminated floor slab, i.e., pour one layer of in-situ layer again on the top of precast floor slab, in installation process, the overlapping such as need building
The installation of next step prefabricated component could be on this basis carried out after the in-situ layer solidification of plate, speed of application is so had a strong impact on, is dropped
Low efficiency of construction, while cast in situs will inevitably carry out the operation such as formwork, concreting, causes job site to complicate, and makes
Construction cost is increased while into potential safety hazard.
In sum, thus the prefabricated component connecting node needing a kind of fast speed of application of exploitation, cost savings badly, be connected firmly.
Utility model content
The prefabricated component connection section that the purpose of this utility model is to provide a kind of fast speed of application, cost savings, is connected firmly
Point.
Above-mentioned purpose is to be achieved through the following technical solutions：A kind of connecting node of prefabricated component, the close match-place of two prefabricated components
Connect, the splice ends of two described prefabricated components are provided with connector, and the connector is with bolts, described two prefabricated
The splice ends of part offer gathering hole.In the prefabrication process of prefabricated component, in its splice ends built-in connection, and connection is being set
Reservation operations mouth at part.In the assembling process of prefabricated component, after any one dropping place of described two prefabricated components is good, another is lifted
The two close match-place is connect, is then connected into the connector being embedded in respectively in two prefabricated components using bolt by gathering hole whole
Body, thus, realizing the connection of prefabricated component, the two forms overall common stress.Splice ends of the utility model in two prefabricated components
Gathering hole is equipped with, facilitates the connection between connector, and two gathering holes constitute a larger gathering hole, behaviour in stitching portion
Make the operation construction that space is bigger, is so more beneficial for during bolt connection connector, while making the mould unification of prefabricated component, system
Make process also more easy.Prefabricated component of the present utility model is connect using close match-place, without the need for cast-in-place concrete in assembling process, into
This saving, speed of application is fast, short construction period, and prefabricated component connects integral by bolt and connector, increased prefabricated component connection
Knot tension ability, is conducive to the conduction of power between wallboard, meets the construction quality and technical performance of building.
Further, the connector is provided with jack hole, and the bolt is worn and connects the jack hole connector is connected into integral,
And fixed by nut screwing clamping.It is arranged such, bolt is passed through into jack hole, then tighten bolt so that the company of connector fastening
Entirety is connected into, shearing force is transmitted by connector between prefabricated component.
Further, slurry is filled with the gathering hole.It is arranged such, on the one hand can solves because caused by reservation operations mouth
Unsightly problem, on the other hand, after the slurry in gathering hole solidifies, can play a part of fixing bolt, it is to avoid use year
Limit bolt looseness under the influence of long or external force.Now filling paste has no effect on construction speed, carries out again without waiting for slurry hardening
The installation of next prefabricated component node.
Further, SBS self-adhering type modified bituminous pitch coiled materials are provided with the Mosaic face of the prefabricated component.It is arranged such, can rises
To waterproof effect, effectively prevent water along the Mosaic face seepage of prefabricated component, especially prefabricated component be Side fascia when.
Further, the side of the splice ends of prefabricated component is provided with breach, the breach and is filled with waterproof gasket cement.So set
Put, can prevent water from entering the Mosaic face of prefabricated component, and then prevent water along Mosaic face seepage.
Further, the connector includes connecting plate and the anchoring supporting leg being arranged on connecting plate.It is arranged such, can has
Effect increases anchor force of the connector in prefabricated component, improves the structural strength that connector is connected with prefabricated component.
Further, the prefabricated component is floor and/or wallboard.
Further, the Mosaic face of the prefabricated component is embedded with elastic water-proof body.It is in the manufacturing process of prefabricated component, elasticity is anti-
Water body is embedded in the Mosaic face of prefabricated component, and after the close match-place of prefabricated component connects, water-proof elastomer is tightly squeezed in the two by prefabricated component
Mosaic face, thus, water can be prevented along the Mosaic face seepage of prefabricated component.Certainly, because prefabricated component adopts close spelling, elastic water-proof body is not
Preferably wide, the Mosaic face of prefabricated component can be embedded with multiple elastic water-proof bodies.It is preferred that, can be in prefabricated component and the contact surface of elastic water-proof body
Groove is set, and elastic water-proof body side is embedded the Mosaic face of a prefabricated component, and opposite side is squeezed into corresponding another prefabricated
In the groove of part Mosaic face, waterproof effect so can be both played, nor affect on the close spelling of prefabricated component.
Further, the Mosaic face of the prefabricated component arranges slip casting groove, and in the slip casting groove waterproofing slurry is perfused with.So set
Put, after the completion of prefabricated component assembly, waterproofing slurry is perfused with slip casting groove, after waterproofing slurry is hardened, in the spelling of prefabricated component
Junction forms waterproof layer, can effectively prevent water along Mosaic face seepage.
Further, there is waterproof steel plate the side of the splice ends of the prefabricated component, and adjacent waterproof steel plate welding is integral.Such as
This setting, waterproof steel plate now plays a part of to close or blocks Mosaic face, can effectively prevent water along Mosaic face seepage.When
So, welding position can be polished flat by sander after waterproof steel plate welding so as to more attractive in appearance.
Description of the drawings
The accompanying drawing for constituting a part of the present utility model is used for providing further understanding to of the present utility model, and this practicality is new
The schematic description and description of type is used to explain the utility model, does not constitute to improper restriction of the present utility model.
Fig. 1 and Fig. 2 are respectively the structure of the connecting node of the prefabricated component involved by a kind of embodiment of the utility model and show
It is intended to；
Fig. 3 is the left view of connector involved in Fig. 1；
Fig. 4 is the top view of connector involved in Fig. 1；
Fig. 5 is the cut-away view in A-A sections of the connecting node of prefabricated component involved in Fig. 1.
In figure：
The connecting plate of 1 prefabricated component, 2 connector, 3 bolt 4
The waterproof steel plate of 7 gathering hole of the anchoring supporting leg of 5 jack hole 68
The nut of 9 breach 10
Specific embodiment
The utility model is described in detail below in conjunction with the accompanying drawings, the description of this part be only it is exemplary and explanatory,
There should not be any restriction effect to protection domain of the present utility model.Additionally, those skilled in the art's retouching according to presents
State, respective combination can be carried out to the feature in embodiment in presents and in different embodiments.
The utility model embodiment is as follows, and with reference to Fig. 1 and Fig. 5, a kind of connecting node of prefabricated component, two prefabricated components 1 are close
Match-place connects, and the splice ends of two described prefabricated components 1 are provided with connector 2, and the connector 2 is connected using bolt 3, described
The splice ends of two prefabricated components 1 offer gathering hole 7.Close match-place described in the utility model connects the splicing for referring to prefabricated component 1
Place leaves no gaps, it will be appreciated that described herein leaving no gaps is that certain intervals distance is reserved in hinge structure to fill
For the technical scheme of slurry or casting concrete, the stitching portion of prefabricated component 1 is not implied that completely without gap, and apply in actual
During work, due to rigging error or Mosaic face out-of-flatness, often can there is tiny gap during splicing.Certainly,
To reach the effect above, preferred Mosaic face is smooth.In the prefabrication process of prefabricated component 1, in its splice ends built-in connection 2,
And reservation operations mouth 7 at connector 2 is being set.In the assembling process of prefabricated component 1, described two prefabricated components 1 any one fall
After position is good, lifting another connects the two close match-place, then by gathering hole 7 using bolt 3 will be embedded in respectively two it is prefabricated
Connector 2 in part 1 connects integral, thus, realizing the connection of prefabricated component 1, the two forms overall common stress.This practicality is new
Type is equipped with gathering hole 7 in the splice ends of two prefabricated components 1, facilitates the connection between connector 2, and two gathering holes 7 spelling
Meet place and constitute a larger gathering hole 7, operating space is bigger, operation when being so more beneficial for the connection connector 2 of bolt 3 is applied
Work, while making the mould unification of prefabricated component 1, manufacturing process is also more easy.Prefabricated component of the present utility model 1 adopts close match-place
Connect, without the need for cast-in-place concrete in assembling process, cost savings, speed of application is fast, short construction period, and prefabricated component 1 passes through bolt 3
Connect integral with connector 2, increased prefabricated component 1 and be coupled tension ability, be conducive to the conduction of power between wallboard, meet building
Construction quality and technical performance.
On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 3, the connector 2 is provided with to wear and connects
Hole 5, the bolt 3 is worn and connects the jack hole 5 connector 2 is connected into integral, and tightens fixation by nut 10.So set
Put, bolt 3 is passed through into jack hole 5, then tighten bolt 3 so that the connection of the fastening of connector 2 is integral, leads between prefabricated component 1
Cross the transmission shearing force of connector 2.
On the basis of above-described embodiment, in another embodiment of the utility model, slurry is filled with the gathering hole 7.
It is arranged such, on the one hand can solves because of the caused unsightly problem of reservation operations mouth 7, on the other hand, the slurry in gathering hole 7
After solidification, fixing bolt 3 can be played a part of, it is to avoid service life is long or bolt 3 loosens under the influence of external force.Now filling is starched
Material has no effect on construction speed, and without waiting for slurry hardening the installation of the node of next prefabricated component 1 is carried out again.
On the basis of above-described embodiment, in another embodiment of the utility model, arrange on the Mosaic face of the prefabricated component 1
There are SBS self-adhering type modified bituminous pitch coiled materials.It is arranged such, waterproof effect can be played, effectively prevents water from oozing along the Mosaic face of prefabricated component 1
When leakage, especially prefabricated component 1 are Side fascia.
On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 1 and Fig. 2, the splicing of prefabricated component 1
The side at end is provided with breach 9, the breach 9 and is filled with waterproof gasket cement.It is arranged such, can prevents water from entering prefabricated component 1
Mosaic face, and then prevent water along Mosaic face seepage.
On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 1～4, the connector 2 includes
Connecting plate 4 and the anchoring supporting leg 6 being arranged on connecting plate 4.It is arranged such, connector 2 can be effectively increased in prefabricated component 1
Anchor force, improves the structural strength that connector 2 is connected with prefabricated component 1.
On the basis of above-described embodiment, in another embodiment of the utility model, the prefabricated component 1 is floor and/or wall
Plate.
On the basis of above-described embodiment, in another embodiment of the utility model, the Mosaic face of the prefabricated component 1 is embedded with bullet
Property waterproof body.In the manufacturing process of prefabricated component 1, elastic water-proof body is embedded in into the Mosaic face of prefabricated component 1, when the close spelling of prefabricated component 1
After docking, water-proof elastomer is tightly squeezed in prefabricated component 1 Mosaic face of the two, thus, water can be prevented along the splicing of prefabricated component 1
Face seepage.Certainly, because prefabricated component 1 adopts close spelling, elastic water-proof body is unsuitable wide, and the Mosaic face of prefabricated component 1 can be embedded with multiple
Elastic water-proof body.It is preferred that, groove can be set in the contact surface of prefabricated component 1 and elastic water-proof body, elastic water-proof body side is embedded in it
In a prefabricated component 1 Mosaic face, opposite side is squeezed in the groove of the corresponding Mosaic face of another prefabricated component 1, so both can rise
To waterproof effect, the close spelling of prefabricated component 1 is nor affected on.
On the basis of above-described embodiment, in another embodiment of the utility model, the Mosaic face of the prefabricated component 1 arranges note
Stock tank, in the slip casting groove waterproofing slurry is perfused with.It is arranged such, after the completion of the assembly of prefabricated component 1, is perfused with slip casting groove
Waterproofing slurry, after waterproofing slurry is hardened, in the Mosaic face of prefabricated component 1 waterproof layer is formed, and can effectively prevent water from oozing along Mosaic face
Leakage.
On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 2, the splice ends of the prefabricated component 1
Side have waterproof steel plate 8, adjacent waterproof steel plate 8 welds integral.It is arranged such, waterproof steel plate 8 now plays closing
Or the effect of Mosaic face is blocked, water can be effectively prevented along Mosaic face seepage.Certainly, waterproof steel plate 8 can pass through sander after welding
Welding position is polished flat so as to more attractive in appearance.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from the utility model principle, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (10)
1. a kind of connecting node of prefabricated component, it is characterised in that the close match-place of two prefabricated components connects, the spelling of described two prefabricated components
Connect end and be provided with connector, the connector is with bolts, the splice ends of described two prefabricated components offer operation
Mouthful.
2. the connecting node of prefabricated component according to claim 1, it is characterised in that the connector is provided with jack hole, institute
State bolt and wear and connect the jack hole connector is connected into integral, and fixed by nut screwing clamping.
3. the connecting node of prefabricated component according to claim 2, it is characterised in that slurry is filled with the gathering hole.
4. the connecting node of prefabricated component according to claim 3, it is characterised in that arrange on the Mosaic face of the prefabricated component
There are SBS self-adhering type modified bituminous pitch coiled materials.
5. the connecting node of prefabricated component according to claim 4, it is characterised in that the side of the splice ends of prefabricated component is provided with
Waterproof gasket cement is filled with breach, the breach.
6. the connecting node of the prefabricated component according to Claims 1 to 5 any one, it is characterised in that the connector bag
Include connecting plate and the anchoring supporting leg being arranged on connecting plate.
7. the connecting node of prefabricated component according to claim 6, it is characterised in that the prefabricated component is floor and/or wall
Plate.
8. the connecting node of prefabricated component according to claim 1, it is characterised in that it is anti-that the Mosaic face of prefabricated component is embedded with elasticity
Water body.
9. the connecting node of prefabricated component according to claim 1, it is characterised in that the Mosaic face of prefabricated component arranges slip casting
Groove, in the slip casting groove waterproofing slurry is perfused with.
10. the connecting node of prefabricated component according to claim 1, it is characterised in that the side of the splice ends of prefabricated component sets
There is waterproof steel plate, adjacent waterproof steel plate welding is integral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620784264.5U CN206157919U (en) | 2016-07-22 | 2016-07-22 | Connected node of prefab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620784264.5U CN206157919U (en) | 2016-07-22 | 2016-07-22 | Connected node of prefab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206157919U true CN206157919U (en) | 2017-05-10 |
Family
ID=58647963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620784264.5U Active CN206157919U (en) | 2016-07-22 | 2016-07-22 | Connected node of prefab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206157919U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149825A (en) * | 2018-01-11 | 2018-06-12 | 厦门华旸建筑工程设计有限公司 | A kind of connection mode and construction method for the prefabricated board of assembled architecture, prefabricated board and beam |
| CN111560796A (en) * | 2020-04-29 | 2020-08-21 | 中铁二院工程集团有限责任公司 | Assembly type mass spring floating plate system inter-plate connecting assembly |
-
2016
- 2016-07-22 CN CN201620784264.5U patent/CN206157919U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108149825A (en) * | 2018-01-11 | 2018-06-12 | 厦门华旸建筑工程设计有限公司 | A kind of connection mode and construction method for the prefabricated board of assembled architecture, prefabricated board and beam |
| CN108149825B (en) * | 2018-01-11 | 2019-10-29 | 厦门华旸建筑工程设计有限公司 | A kind of connection type and construction method for the prefabricated board of assembled architecture, prefabricated board and beam |
| CN111560796A (en) * | 2020-04-29 | 2020-08-21 | 中铁二院工程集团有限责任公司 | Assembly type mass spring floating plate system inter-plate connecting assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanning Zhongmin zhuyou Intelligent Manufacturing Technology Co., Ltd Assignor: CHINA MINGSHENG DRAWIN TECHNOLOGY INVESTMENT CO., LTD. Contract record no.: X2019430000004 Denomination of utility model: Connected node of prefab Granted publication date: 20170510 License type: Common License Record date: 20191105 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xiangxi Zhongmin zhuyou Technology Co., Ltd Assignor: CHINA MINGSHENG DRAWIN TECHNOLOGY INVESTMENT CO., LTD. Contract record no.: X2020430000002 Denomination of utility model: Connected node of prefab Granted publication date: 20170510 License type: Common License Record date: 20200305 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| CP03 | Change of name, title or address |
Address after: 5 / F, office building 2, Zhongmin zhuyou Co., Ltd., No. 10, Zhongshi Road, shaping street, Kaifu District, Changsha City, Hunan Province, 410000 Patentee after: Zhuyou Zhizao Technology Investment Co., Ltd Address before: 410205 comprehensive building in Hunan province Changsha Kaifu District, No. 30 Xingang Road, Changsha Jinxia bonded logistics center room 3005 Patentee before: CHINA MINGSHENG DRAWIN TECHNOLOGY INVESTMENT Ltd. |
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| CP03 | Change of name, title or address | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nantong Zhongmin zhuyou Zhizao Technology Co., Ltd Assignor: Zhuyou Zhizao Technology Investment Co., Ltd Contract record no.: X2020980007488 Denomination of utility model: A kind of connection joint of prefabricated parts Granted publication date: 20170510 License type: Common License Record date: 20201105 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hunan Yuanfeng Construction Engineering Co.,Ltd. Assignor: Zhuyou Zhizao Technology Investment Co., Ltd Contract record no.: X2021980000884 Denomination of utility model: A kind of connection joint of prefabricated parts Granted publication date: 20170510 License type: Common License Record date: 20210203 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hunan Hailong Construction Engineering Co.,Ltd. Assignor: Zhuyou Zhizao Technology Investment Co., Ltd Contract record no.: X2021980001039 Denomination of utility model: A kind of connection joint of prefabricated parts Granted publication date: 20170510 License type: Common License Record date: 20210207 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Henan YingYuan Construction Service Co.,Ltd. Assignor: Zhuyou Zhizao Technology Investment Co., Ltd Contract record no.: X2021980001160 Denomination of utility model: A kind of connection joint of prefabricated parts Granted publication date: 20170510 License type: Common License Record date: 20210218 |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Henan guochi Construction Service Co.,Ltd. Assignor: Zhuyou Zhizao Technology Investment Co., Ltd Contract record no.: X2021980001282 Denomination of utility model: A kind of connection joint of prefabricated parts Granted publication date: 20170510 License type: Common License Record date: 20210225 |
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Assignee: Linzhou Hongen Construction Service Co.,Ltd. Assignor: Zhuyou Zhizao Technology Investment Co., Ltd Contract record no.: X2021980001340 Denomination of utility model: A connection node of prefabricated parts Granted publication date: 20170510 License type: Common License Record date: 20210302 |
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