CN207469443U - Girt strip connection structure and assembled girt strip - Google Patents
Girt strip connection structure and assembled girt strip Download PDFInfo
- Publication number
- CN207469443U CN207469443U CN201721602466.4U CN201721602466U CN207469443U CN 207469443 U CN207469443 U CN 207469443U CN 201721602466 U CN201721602466 U CN 201721602466U CN 207469443 U CN207469443 U CN 207469443U
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- CN
- China
- Prior art keywords
- girt strip
- sleeve
- hole
- strip
- fastening
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- 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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Abstract
The utility model provides a kind of girt strip connection structure and assembled girt strip, belong to technical field of building construction, including connector and fastener, connector is provided with accommodating cavity, two openings and the mounting hole being arranged in pairs, two openings and is oppositely arranged and is respectively communicated with accommodating cavity；The mounting hole being arranged in pairs is located between two openings, is oppositely arranged with a pair of mounting hole, each mounting hole connects accommodating cavity；Fastener is used to be plugged on in a pair of of mounting hole.The girt strip connection structure is when carrying out prefabricated girt strip connection, directly the corresponding end of prefabricated girt strip to be assembled is plugged in accommodating cavity, then prefabricated girt strip with connector is connected as one using fastener, realizes the connection of contiguous prefabricated girt strip, simple in structure, connection mode is simple and reliable.
Description
Technical field
The utility model is related to technical field of building construction, in particular to a kind of girt strip connection structure and assembling
Formula girt strip.
Background technology
Girt strip is civil engineering proprietary term, and concrete superstructure is divided into rib-beam floor frame and arch without beam, middle rib by structure type
Beam refer to having below plate girder or secondary beam as plate rib (such as：One-way slabs rib-beam floor frame is usually main with secondary beam and part
Beam does rib, and two-way slab rib-beam floor frame usually does rib with girder).Girt strip is formed using concreting, needs to install mould when pouring
Plate.
In building construction process, there is existing vehicle to set up template and carry out girt strip pouring construction, also there is first prefabricated girt strip, Ran Hou
Scene carries out being assembled to form assembled girt strip.
Inventor has found that traditional assembled girt strip at least has the disadvantage that during the connection process under study for action：
After prefabricated girt strip is installed predeterminated position, the end of adjacent girt strip is attached so that more individual prefabricated ribs
Beam forms overall structure, improves overall structure fastness, improves safety.In the connection for carrying out prefabricated girt strip, need to set up
Then template treats that casting space carries out concreting what template surrounded, this form of construction work is cumbersome, long construction period, increases
The cost of construction is added.
Utility model content
The purpose of this utility model is to provide a kind of girt strip connection structures, are being carried out with improving traditional assembled girt strip
It needs to set up the problem of template leads to long construction period, low construction efficiency during connection.
The purpose of this utility model is to provide a kind of assembled girt strips, are being connected with the assembled girt strip for improving traditional
It needs to set up the problem of template leads to long construction period, low construction efficiency when connecing.
What the embodiment of the utility model was realized in：
Based on above-mentioned first purpose, the utility model provides a kind of girt strip connection structure, including connector and fastening
Part, the connector are provided with accommodating cavity, two openings and the mounting hole being arranged in pairs, and two openings are oppositely arranged
And it is respectively communicated with the accommodating cavity；The mounting hole being arranged in pairs is located between two openings, with a pair of peace
Dress hole is oppositely arranged, and each mounting hole connects the accommodating cavity；The fastener is used to be plugged on described in a pair
In mounting hole.
In the utility model preferred embodiment, the connector be rectangular steel pipe, the connector perpendicular to it
The cross sectional shape of length direction is straight-flanked ring；The pairs of mounting hole is located at be oppositely arranged two side plates of the connector
On.
In the utility model preferred embodiment, the mounting hole is round hole, and the fastener is fastening bolt.
In the utility model preferred embodiment, fastening sleeve is further included, the fastening sleeve is provided with through-hole, described
Fastener is used to be plugged in the through-hole.
In the utility model preferred embodiment, the through-hole is threaded hole, and the fastener is set as fastening bolt.
In the utility model preferred embodiment, multiple protrusions are provided on the outer wall of the fastening sleeve.
In the utility model preferred embodiment, regulating sleeve is further included, the regulating sleeve is inserted into the through-hole
It is interior, the inner wall of the outer wall of the regulating sleeve and the fastening sleeve be clamped by concaveconvex structure with realize the regulating sleeve with
The circumferential limiting connection of the fastening sleeve, and the regulating sleeve is slided along the axis of the through-hole relative to the fastening sleeve
Dynamic connection；The regulating sleeve is provided with threaded connection hole.
In the utility model preferred embodiment, there are two the regulating sleeve settings, and two regulating sleeves are same
Axis is set.
In the utility model preferred embodiment, the outer wall of the regulating sleeve is provided with strip projected parts, the strip
The protrusion direction of protrusion is outside along the radial direction of the regulating sleeve, and the length directions of the strip projected parts is along the adjusting set
The axis direction extension of cylinder；The inner wall of the fastening sleeve is provided with strip groove, and the recess direction of the strip groove is along institute
It states outside the radial direction phase of fastening sleeve, the length direction of the strip groove extends along the axis direction of the fastening sleeve.
Based on above-mentioned second purpose, the utility model provides a kind of assembled girt strip, and knot is connected including the girt strip
Structure.
The advantageous effect of the utility model embodiment is：
In conclusion the utility model embodiment provides a kind of girt strip connection structure, and it is simple and reasonable, convenient for system
Processing is made, is installed with easy to use, meanwhile, which, directly will be to be assembled when carrying out prefabricated girt strip connection
The prefabricated corresponding end of girt strip is plugged in accommodating cavity, and prefabricated girt strip and connector then are connected as one using fastener
Body realizes the connection of contiguous prefabricated girt strip, and simple in structure, connection mode is simple and reliable, is readily transported simultaneously, saves cost,
Pre-formed in factory, processing environment is more preferable, is not easy to endanger the health of worker, more environmentally-friendly.It is specific as follows：
Girt strip connection structure provided in this embodiment includes connector and fastener, is provided on connector accommodating
Cavity and two openings that cavity is connected are housed with this, two openings are oppositely arranged, are provided on connector and set in pairs
The mounting hole put, two mounting holes are a pair.In the connection for carrying out prefabricated girt strip, by the end of a prefabricated girt strip from one
Opening is inserted into the accommodating cavity of connector, is then inserted into the end of another prefabricated girt strip from another opening
In the accommodating cavity of connector, the corresponding end of two prefabricated girt strips can abut or be spaced, at this point, two prefabricated ribs
Beam is located in the accommodating cavity of connector, then, using fasteners through mounting holes, also cross prefabricated girt strip, by prefabricated rib
Beam and connector are fixed together, and connector is not easy to slide relative to prefabricated girt strip, and overall structure is solid and reliable.By in factory
Prefabricated girt strip, convenient for control, the length of every girt strip can design shorter, be readily transported and process, on demand for the size of girt strip
More girt strips are connected, simple in entire assembling process, the construction time is greatly saved in constructing operation simple and flexible, drop
Low labor intensity improves the efficiency of construction, saves the cost of construction, meanwhile, it needs to set up mould at the scene with traditional
Plate carries out girt strip cast in situs and compares, and does not need to dismantle template repeatedly, avoid it is dusty caused by site operation, using pre-
Girt strip processed is more environmentally-friendly, reduces the harm to construction personnel, and construction is more convenient, substantially increases construction efficiency.
Assembled girt strip provided in this embodiment includes above-mentioned girt strip connection structure, has all of girt strip connection structure
Advantage.
Description of the drawings
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the application schematic diagram of the girt strip jointing of the utility model embodiment；
Fig. 2 is the sectional view of the application structure of the girt strip jointing of the utility model embodiment；
Fig. 3 is the fastener of the girt strip jointing of the utility model embodiment and the cooperation of regulating sleeve, fastening sleeve
Schematic diagram；
Fig. 4 is the schematic diagram of the connector of the girt strip connection structure of the utility model embodiment；
Fig. 5 is the sectional view of the fastening sleeve of the girt strip connection structure of the utility model embodiment；
Fig. 6 is the sectional view of the regulating sleeve of the girt strip jointing of the utility model embodiment.
Icon：10- connectors；11- houses cavity；12- is open；13- mounting holes；14- sprue gates；15- is poured into a mould
Space；20- fasteners；30- fastening sleeves；31- threaded holes；32- strip grooves；33- protrusions；40- regulating sleeves；
41- threaded connection holes；42- strip projected parts；The prefabricated girt strips of 100-.
Specific embodiment
In building construction process, there is existing vehicle to set up template and carry out girt strip pouring construction, also there is first prefabricated girt strip, Ran Hou
Scene carries out being assembled to form assembled girt strip.After prefabricated girt strip is installed predeterminated position, the end of adjacent girt strip is attached
So that more individual prefabricated girt strips form overall structure, overall structure fastness is improved, improves safety.Carrying out prefabricated rib
It during the connection of beam, needs to set up template, then treats that casting space carries out concreting, this form of construction work what template surrounded
Cumbersome, long construction period increases the cost of construction.
In consideration of it, inventor devises a kind of girt strip connection structure and assembled girt strip, prefabricated girt strip 100 is being carried out
During connection, connector 10 is arranged between contiguous prefabricated girt strip 100, then connector 10 is connected with girt strip, realized
The connection of connector 10 and adjacent girt strip, and then realize the installation of assembled girt strip, integral installation is simple for process flexibly, section
The set-up time has been saved, has saved installation cost.
Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Usually here described in attached drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of different.
Therefore, requirement is not intended to limit to the detailed description of the embodiment of the utility model provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, those of ordinary skill in the art's all other embodiments obtained without creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the orientation or position relationship of the instructions such as term " interior ", " outer "
For be based on orientation shown in the drawings or position relationship or the utility model product using when the orientation or position usually put
Relationship is for only for ease of description the utility model and simplifies description rather than instruction or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Put ", " installation ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the utility model can
To be combined with each other.
Girt strip connection structure embodiment
Referring to Fig. 1, a kind of girt strip connection structure is present embodiments provided, by the way that contiguous prefabricated girt strip 100 is passed through company
The mode of fitting 10 realizes connection, and connection mode is simple and reliable, reduces labor intensity, saves construction cost.
Fig. 2-Fig. 3 is please referred to, girt strip connection structure includes connector 10, fastener 20, fastening sleeve 30 and adjusts
Sleeve 40.
Referring to Fig. 4, connector 10 is main connection structure, connector 10 is tubular structure made of steel, is connected
Part 10 is provided with columnar accommodating cavity 11, connector 10 along its length be provided at both ends with opening 12, two openings
12 are respectively communicated with the accommodating cavity 11.The cross sectional shape perpendicular to its axis direction of connector 10 is straight-flanked ring or square
Ring-type, i.e. connector 10 are square steel tube, and the accommodating cavity 11 of connector 10 is square column type cavity.In being oppositely arranged for connector 10
Two side plates on be respectively arranged with mounting hole 13, two mounting holes 13 are a pair, and two mounting holes 13 being arranged in pairs are opposite
Setting, that is, two mounting holes 13 being arranged in pairs are located on two side plates respectively.Multipair mounting hole is provided on connector 10
13, multipair mounting hole 13 is intervally arranged along the axis direction of connector 10.Each mounting hole 13 is round hole, each mounting hole
13 run through the side plate along the board direction perpendicular to corresponding side plate, and two mounting holes 13 being arranged in pairs are coaxially disposed.
Further, the end face where each opening 12 of connector 10 and the junction of the inner wall of connector 10 are provided with
Chamfering.Convenient for the grafting of prefabricated girt strip 100.
It please refers to Fig.1 and Fig. 2, fastener 20 is used to connector 10 being fixedly connected with prefabricated girt strip 100 so that connector
10th, fastener 20 and prefabricated girt strip 100 are structure as a whole.Fastener 20 is set as fastening bolt, includes screw rod and is spirally connected
Nut on screw rod.Obviously, the nut on screw rod can be spirally connected one, be provided with annular stop portion on screw rod at this time, will
Workpiece clamping to be tightened is between annular stop portion and nut；Nut on screw rod can be spirally connected two, shape between two nuts
Into clamping zone, the clamping of workpiece is realized.
Referring to Fig. 5, fastening sleeve 30 is provided with through-hole, the through-hole of fastening sleeve 30 is cylindrical hole, fastening sleeve 30
The cross sectional shape perpendicular to its axis direction for annular shape.Via design is threaded hole 31, and the diameter of through-hole is no more than installation
The diameter in hole 13.Multiple protrusions 33 are provided on the periphery wall of fastening sleeve 30, multiple protrusions 33 are alternatively arranged.Each
The protrusion direction of protrusion 33 is outside along the radial direction of fastening sleeve 30, and protrusion 33 can be cube shape, hemispherical etc..
Further, it is provided with strip groove 32 on the inner wall of fastening sleeve 30, strip groove 32 is rectangular channel, strip
The length direction of groove 32 extends along the axis direction of fastening sleeve 30, the slot both ends along its length point of strip groove 32
It does not extend on two end faces of fastening sleeve 30.The groove depth direction of strip groove 32 along fastening sleeve 30 radial direction to
Outside.Further, strip groove 32 is provided with two, and two strip grooves 32 are using the central axes of fastening sleeve 30 as balanced pair
Claim setting, and two strip grooves 32 be located at fastening sleeve 30 it is same diametrically.
Referring to Fig. 6, regulating sleeve 40 is tubular structure, regulating sleeve 40 is provided with threaded connection hole 41, is threadedly coupled
The axis in hole 41 and the axis collinear of regulating sleeve 40, along its length two end faces of threaded connection hole 41 are located at respectively
On along its length two end faces of regulating sleeve 40, the section outer profile perpendicular to its length direction of regulating sleeve 40
Shape is circle.Strip projected parts 42 are provided on the outer wall of regulating sleeve 40, strip projected parts 42 are rectangular strip, strip projected parts 42
Length direction extends along the axis direction of regulating sleeve 40, and the slot both ends along its length of strip projected parts 42 each extend over
On two end faces of regulating sleeve 40.The protrusion direction of strip projected parts 42 is outside along the radial direction of regulating sleeve 40.
Further, strip projected parts 42 are provided with two, two strip projected parts 42 using the central axes of regulating sleeve 40 as pair
Claim line be symmetrical arranged, and two strip projected parts 42 be located at regulating sleeve 40 it is same diametrically.
Girt strip connection structure provided in this embodiment, for contiguous prefabricated girt strip 100 to be attached, contiguous prefabricated girt strip
After the completion of 100 connections, prefabricated girt strip 100 and the integral structure of connection structure are whole solid and reliable, safe and reliable.It is practical
During construction, two regulating sleeves 40 are first inserted in fastening sleeve 30, two regulating sleeves 40 are respectively from the two of fastening sleeve 30
It is inserted at a port, regulating sleeve 40 is mutually engaged by clamping with the strip projected parts 42 of fastening sleeve 30 with strip groove 32, plays tune
The effect that section sleeve 40 and fastening sleeve 30 circumferentially limit, i.e. regulating sleeve 40 and fastening sleeve 30 can rotate synchronously, then,
The position of regulating sleeve 40 and fastening sleeve 30 is adjusted according to the width of prefabricated girt strip 100 or height, ensures two adjustings
Sleeve 40 positioned at the distance between two end faces of the outside of fastening sleeve 30 and the width of prefabricated girt strip 100 or height phase
Deng the fastening sleeve 30 after adjustment and regulating sleeve 40 are embedded in prefabricated girt strip 100.Prefabricated girt strip 100, which pours, to condense into
After type, fastening sleeve 30 and regulating sleeve 40 are located in prefabricated girt strip 100, due to 30 peripheral surface of fastening sleeve be provided with it is multiple convex
Go out portion 33, with being firmly combined with reliably for prefabricated girt strip 100.Pre-buried size is suitable in two prefabricated girt strips 100 for needing to connect
Fastening sleeve 30 and regulating sleeve 40 after, connector 10 is set on a prefabricated girt strip 100, depth is arranged and sets on demand
It puts so that the threaded connection hole 41 of the regulating sleeve 40 on prefabricated girt strip 100 is corresponding with the mounting hole 13 on connector 10, so
Afterwards, another prefabricated girt strip 100 is inserted into the accommodating cavity 11 of connector 10, equally makes mounting hole 13 and regulating sleeve 40
On threaded connection hole 41 correspond to, then, screw rod from mounting hole 13 is inserted into, is screwed onto in threaded connection hole 41, screw rod it is another
Connector 10 is stretched out in one end, is realized and fastened by nut.Spacing distance between the end of two prefabricated girt strips 100, every prefabricated
Steel bar piece has been stretched into the end of girt strip 100, and two prefabricated girt strips 100 constitute casting space 15, connector 10 with connector 10
On be provided with sprue gate 14, concrete is injected at sprue gate 14, concrete and rebar part is combined together, and realizes prefabricated rib
The connection of beam 100.Connection structure is simple, and whole operation mode is simple and reliable during connection, after the completion of connection, connector 10 with it is adjacent
Prefabricated girt strip 100 is structure as a whole, and overall structure is solid and reliable, safe and reliable.
Girt strip jointing provided in this embodiment does not need to set extra formwork structure, reduces difficulty of construction, letter
Change construction procedure, saved the construction time, save construction cost.The length of setting girt strip, processing are flexible and convenient on demand.
It should be noted that regulating sleeve 40 and fastening sleeve 30 coordinate come when adapting to various sizes of prefabricated girt strip 100,
Screw rod directly coordinates with the threaded connection hole 41 in regulating sleeve 40, and realization is spirally connected, and therefore, the through-hole of fastening sleeve 30 can not
Threaded hole 31 is set as, simplifies manufacturing procedure, saves cost.
Certainly, fastening sleeve 30 can be used alone, and directly fastening sleeve 30 is embedded in prefabricated girt strip 100, utilize
Bolt is screwed onto in the threaded hole 31 of fastening sleeve 30.At this point, the size phase of fastening sleeve 30 and prefabricated girt strip 100
Match.
Assembled girt strip embodiment
A kind of assembled girt strip is present embodiments provided, including the girt strip connection structure that above-described embodiment provides, is further included
Prefabricated girt strip 100, contiguous prefabricated girt strip 100 are fixedly connected by girt strip connection structure.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of girt strip connection structure, which is characterized in that including connector and fastener, the connector is provided with accommodating sky
Chamber, two openings and the mounting hole being arranged in pairs, two openings are oppositely arranged and are respectively communicated with the accommodating cavity；Into
It between being located at two openings to the mounting hole of setting, is oppositely arranged with a pair of mounting hole, each installation
Hole connects the accommodating cavity；The fastener is used to be plugged on in a pair of mounting hole.
2. girt strip connection structure according to claim 1, which is characterized in that the connector be rectangular steel pipe, the company
The cross sectional shape perpendicular to its length direction of fitting is straight-flanked ring；The pairs of mounting hole is located at the opposite of the connector
On two side plates of setting.
3. girt strip connection structure according to claim 2, which is characterized in that the mounting hole be round hole, the fastening
Part is fastening bolt.
4. girt strip connection structure according to claim 1, which is characterized in that further include fastening sleeve, the fastening sleeve
Through-hole is provided with, the fastener is used to be plugged in the through-hole.
5. girt strip connection structure according to claim 4, which is characterized in that the through-hole be threaded hole, the fastener
It is set as fastening bolt.
6. girt strip connection structure according to claim 5, which is characterized in that be provided on the outer wall of the fastening sleeve more
A protrusion.
7. girt strip connection structure according to claim 5, which is characterized in that further include regulating sleeve, the regulating sleeve
It is inserted into the through-hole, the outer wall of the regulating sleeve and the inner wall of the fastening sleeve are clamped to realize by concaveconvex structure
The circumferential limiting of the regulating sleeve and the fastening sleeve connects, and the regulating sleeve along the through-hole axis relative to
The fastening sleeve is slidably connected；The regulating sleeve is provided with threaded connection hole.
8. girt strip connection structure according to claim 7, which is characterized in that there are two the regulating sleeve settings, two
The regulating sleeve coaxial arrangement.
9. according to claim 7-8 any one of them girt strip connection structures, which is characterized in that the outer wall of the regulating sleeve
Strip projected parts are provided with, the protrusion direction of the strip projected parts is outside along the radial direction of the regulating sleeve, and the strip is convex
The length direction risen extends along the axis direction of the regulating sleeve；The inner wall of the fastening sleeve is provided with strip groove, institute
The recess direction of strip groove is stated along outside the radial direction phase of the fastening sleeve, the length direction of the strip groove is along the fastening
The axis direction extension of sleeve.
10. a kind of assembled girt strip, which is characterized in that tied including being connected according to claim 1-9 any one of them girt strip
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721602466.4U CN207469443U (en) | 2017-11-24 | 2017-11-24 | Girt strip connection structure and assembled girt strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721602466.4U CN207469443U (en) | 2017-11-24 | 2017-11-24 | Girt strip connection structure and assembled girt strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207469443U true CN207469443U (en) | 2018-06-08 |
Family
ID=62258788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721602466.4U Expired - Fee Related CN207469443U (en) | 2017-11-24 | 2017-11-24 | Girt strip connection structure and assembled girt strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207469443U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518803A (en) * | 2018-11-17 | 2019-03-26 | 李秀娟 | A kind of precast concrete beam having high-intensitive connecting node |
| CN110331839A (en) * | 2019-07-29 | 2019-10-15 | 中冶建工集团有限公司 | Assembled flue easy for installation |
| CN112502024A (en) * | 2020-11-26 | 2021-03-16 | 上海建工五建集团有限公司 | Device and method for connecting wet joints of prefabricated arch rib beams |
-
2017
- 2017-11-24 CN CN201721602466.4U patent/CN207469443U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518803A (en) * | 2018-11-17 | 2019-03-26 | 李秀娟 | A kind of precast concrete beam having high-intensitive connecting node |
| CN110331839A (en) * | 2019-07-29 | 2019-10-15 | 中冶建工集团有限公司 | Assembled flue easy for installation |
| CN112502024A (en) * | 2020-11-26 | 2021-03-16 | 上海建工五建集团有限公司 | Device and method for connecting wet joints of prefabricated arch rib beams |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180608 Termination date: 20191124 |