CN208251467U - A kind of half grout sleeve of reinforcing bar and its connection structure of roll forming - Google Patents
A kind of half grout sleeve of reinforcing bar and its connection structure of roll forming Download PDFInfo
- Publication number
- CN208251467U CN208251467U CN201820102580.9U CN201820102580U CN208251467U CN 208251467 U CN208251467 U CN 208251467U CN 201820102580 U CN201820102580 U CN 201820102580U CN 208251467 U CN208251467 U CN 208251467U
- Authority
- CN
- China
- Prior art keywords
- prefabricated
- sleeve
- end cap
- assembly side
- reinforcing bar
- 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.)
- Active
Links
Abstract
A kind of half grout sleeve of reinforcing bar and its connection structure of roll forming, half grout sleeve of reinforcing bar is made of assembly side sleeve and prefabricated end sleeve connection, assembly side sleeve forms the steel pipe with one group of rolling groove in the outer surface of its barrel by rolling, the barrel of assembly side sleeve is provided with grouting port and grout outlet, prefabricated end cap cylinder is formed by rod iron or thick steel pipe entirety turning, the inner wall mantle fiber of prefabricated end cap cylinder forms internal screw thread, and prefabricated end cap cylinder plugging in fitting end cap cylinder is connected as one by a lap welding adapter ring.Connection structure includes half grout sleeve of reinforcing bar, upper layer prefabricated components and lower layer's prefabricated components.The utility model passes through separate prefabricated, shorten the absolute growth of former overall processing, the prefabricated small easy processing of end cap cylinder size, assembly side sleeve is processed by the way of roll forming, almost without material loss, production cost is reduced, two parts sleeve can be with simultaneous processing and high in machining efficiency, the processing cost for greatly reducing half grout sleeve of reinforcing bar, improves processing efficiency and safety.
Description
Technical field
The utility model relates to a kind of half grout sleeve, especially a kind of half separate prefabricated grout sleeve and its connection knot
Structure.
Background technique
Currently, in prefabrication and assembly construction concrete structure field widely applied half grouting reinforcement sleeve connection generally use it is whole
Body casting or metal rod iron turning process are made.For large-sized reinforcing bar grout sleeve, casting bush material dosage is big, and
Material cost needed for casting is higher by much relative to the sleeve of machining, therefore cost is very uneconomical, metal rod iron or
Sleeve made of thick steel pipe entirety turning is adding man-hour requirement to be turned a large amount of metal fragment, and not only material loss is especially big,
And processing technology is complicated, keeps its cost high.
Utility model content
The purpose of the utility model is to provide half grout sleeves of reinforcing bar and its connection structure of a kind of roll forming, to solve
Existing half grout sleeve material cost is high, processing efficiency is low, the technical problem of processing technology complexity, also to solve to improve reinforcing bar company
Connect the low technical problem of reliability.
To achieve the above objectives, the present invention adopts the following technical solutions:
A kind of half grout sleeve of reinforcing bar of roll forming, including cylinder, the cylinder are by assembly side sleeve and prefabricated end
Sleeve connection composition,
The assembly side sleeve is that the steel pipe with one group of rolling groove, rolling are formed by rolling in the outer surface of its barrel
Outer surface of the slot at barrel rolling forms annular groove, and inner surface of the rolling groove at barrel rolling is formed and annular groove phase
The annular convex answered, the front end barrel of assembly side sleeve are provided with grouting port, and the rear end barrel of assembly side sleeve is provided with pulp
Mouthful,
The prefabricated end cap cylinder is formed by rod iron or thick steel pipe entirety turning, and the inner wall mantle fiber of prefabricated end cap cylinder forms interior spiral shell
Line, the prefabricated end cap cylinder are variable cross-section sleeve, are inside contracted on the outside of the front end barrel of prefabricated end cap cylinder as plug division, after inside contracting
Barrel outer diameter and the internal diameter of assembly side sleeve be adapted, the rear end of prefabricated end cap cylinder is non-plug division, outer diameter and assembly
The outer diameter of end cap cylinder is identical,
The plug division and non-plug division are arranged oblique transition anchor ring and carry out variable cross-section transition, plug division plugging in fitting end cap
The rear end of cylinder is connected as one between the rear end face and transition anchor ring of assembly side sleeve by a lap welding adapter ring simultaneously.
The rolling groove is evenly spaced on along the length direction of assembly side sleeve or unevenly spaced distribution.
The plane that the transition anchor ring is inner concave or oblique angle is 45 degree.
The cross section of the welding circle is annular, which is not less than the maximum cross section area of prefabricated end cap cylinder.
The length of the plug division is not less than the half of prefabricated end cap cylinder total length, the plug division plugging in fitting end cap cylinder
The depth of rear end is shorter than length of the grout outlet apart from assembly side sleeve rear end face.
A kind of connection structure of half grout sleeve of reinforcing bar including roll forming, further includes that upper layer prefabricated components and lower layer are pre-
Component processed, the assembly end bar stretched out at the top of lower layer's prefabricated components is embedded in lower layer's prefabricated components, and the upper layer is prefabricated
Prefabricated end bar is embedded in component, assembly end bar is arranged in a one-to-one correspondence with prefabricated end bar,
It is reserved with grouted joint between the top side face of lower layer's prefabricated components and the bottom side of upper layer prefabricated components, it is described
Grouted joint fills joint grouting material,
Half grout sleeve of reinforcing bar be embedded in upper layer prefabricated components bottom, with prefabricated end bar or assembly end bar
Number is arranged in a one-to-one correspondence, and the grout outlet is connected to the outer wall of upper layer prefabricated components with grouting port,
The outer surface mantle fiber of the bottom end of the prefabricated end bar has external screw thread, the external screw thread and prefabricated end cap cylinder
Internal screw thread is adapted, and the bottom end of the prefabricated end bar is inserted into prefabricated end cap cylinder to be threadedly coupled with it,
The bottom face of the assembly side sleeve is concordant with the bottom face of upper layer prefabricated components, in the assembly end bar stretching
In the partial insertion assembly side sleeve of layer prefabricated component and joint grouting material, the top end face for assembling end bar protrudes into position and does not surpass
The height of grout outlet is crossed, the sleeve grouting material by grouting port inflow, grout outlet outflow, institute are filled in the assembly side sleeve
Grouting port and grout outlet is stated to block by plug.
Mantle fiber is processed to be formed after the external screw thread is the direct mantle fiber of Ribbed Bar or is upset.
The upper layer prefabricated components and lower layer's prefabricated components are the cylinder or wall of vertical prefabricated components.
The connection structure further includes horizontal superposed member, and the horizontal superposed member includes prefabricated bottom and cast-in-place top
The top side face in portion, lower layer's prefabricated components is concordant with the bottom side of prefabricated bottom, pours at the top of lower layer's prefabricated components
There is the concrete with cast-in-place top formed by integrally casting, either flush, it is pre- between the top side face and upper layer prefabricated components of the concrete
There are grouted joint, the grouted joint fills joint grouting material.
Compared with prior art the utility model have the characteristics that and the utility model has the advantages that
The utility model will be as will pass through half grout sleeve made of monoblock cast or turnery processing integral production point in the past
Body is prefabricated, is divided into prefabricated end cap cylinder and assembly side sleeve two parts processing composition.Prefabricated end cap cylinder is by rod iron entirety turnery processing
It forms, the processing of connector center mantle fiber.Assembly side sleeve uses steel pipe roll forming, forms multiple rolling grooves, prefabricated end cap cylinder
End retracted position inside contract in plugging in fitting end cap cylinder.The two is connected to become an entirety using welding manner simultaneously,
The annulus area of welding circle is not less than the maximum cross-section area of assembly side sleeve, and connection type is safe and reliable.
By separate prefabricated, the absolute growth of the former overall processing of shortening, prefabricated end cap cylinder size little Yi adds the utility model
Work, assembly side sleeve are processed by the way of roll forming, almost without material loss, reduce production cost, two parts sleeve can
With simultaneous processing and high in machining efficiency, greatly reduce the processing cost of half grout sleeve of reinforcing bar, improve processing efficiency and
Safety has practical application value.
In the connection structure of the utility model, half grout sleeve is integral prefabricated in concrete prefabricated element, prefabricated end cap
Cylinder uses thread connecting mode with prefabricated end bar, and assembly side sleeve is linked and packed end bar by sleeve grouting material, connection side
Formula is safe and reliable, fully achieves the standard of safe handling.The connection structure of the utility model can be widely applied to mostly high-rise
The reinforcing bar of precast concrete column in prefabricated assembled concrete frame construction, shear wall structure or frame-shear-wall structure connects
Connect and the horizontal reinforcement of precast concrete beam connection connected with the reinforcing bar of precast concrete shear wall with existing reinforcing engineering in
Reinforcing bar connection.
Detailed description of the invention
The utility model is described in more detail with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of half grout sleeve of the utility model reinforcing bar.
Fig. 2 is the assembling structure schematic diagram of half grout sleeve of reinforcing bar.
Fig. 3 is the embodiment schematic diagram of the utility model connection structure.
Fig. 4 is the partial enlargement structural representation of Fig. 3.
Appended drawing reference: the prefabricated end cap cylinder of the prefabricated end bar of 1-, 2- internal screw thread, 3-, the plug division 31-, the non-grafting of 32-
Portion, 33- transition anchor ring, 4- welding circle, 5- grout outlet, 6- rolling groove, 7- grouting port, 8- assemble end bar, 9- sleeve
Grouting material, 10- lower layer prefabricated components, 11- assembly side sleeve, the upper layer 12- prefabricated components, the cast-in-place top 13-, 14- seam
The prefabricated bottom grouting material, 15-, 16- concrete, 17- external screw thread.
Specific embodiment
Embodiment is shown in Figure 1, a kind of half grout sleeve of reinforcing bar of roll forming, including cylinder, the cylinder be by
Assembly side sleeve and prefabricated end sleeve connection composition.
Shown in Figure 2, the assembly side sleeve 11 is to pass through through special equipment in the outer surface of its barrel in steel pipe
Outside carries out rolling and forms the steel pipe with one group of rolling groove, and outer surface of the rolling groove 6 at barrel rolling forms annular groove,
Inner surface of the rolling groove at barrel rolling forms annular convex corresponding with annular groove, the front end barrel of assembly side sleeve
It is provided with grouting port 7, the rear end barrel of assembly side sleeve is provided with grout outlet 5.The rolling groove 6 is along the length side of assembly side sleeve
To being evenly spaced on or unevenly spaced distribution.
Shown in Figure 2, the prefabricated end cap cylinder 3 is formed by rod iron or thick steel pipe entirety turning, prefabricated end cap cylinder it is interior
Wall mantle fiber forms internal screw thread 2, and the prefabricated end cap cylinder is variable cross-section sleeve, shortens into the front end barrel outside of prefabricated end cap cylinder
Internal diameter for plug division 31, barrel outer diameter and assembly side sleeve 11 after inside contracting is adapted, and the rear end of prefabricated end cap cylinder is non-
Plug division 32, outer diameter are identical as the outer diameter of assembly side sleeve 11.
Referring to shown in Fig. 1-2, the plug division 31 and non-plug division 32 are arranged oblique transition anchor ring 33 and carry out variable cross-section mistake
It crosses, the rear end of 31 plugging in fitting end cap cylinder 11 of plug division passes through between the rear end face and transition anchor ring 33 of assembly side sleeve simultaneously
One lap welding adapter ring 4 is connected as one.The plane that the transition anchor ring 33 is inner concave or oblique angle is 45 degree.The present embodiment
The plane for being 45 degree for oblique angle.The cross section of the welding circle 4 is annular, and the annulus area is not less than prefabricated end cap cylinder
Maximum cross section area.
In order to not be pulled out after guaranteeing reinforcing steel bar bear, the length a of the elongated setting plug division 31 is not less than prefabricated end cap
The half of 3 total lengths of cylinder.The depth in the 31 plugging in fitting end cap tube rear end portion of plug division is shorter than grout outlet 5 apart from assembly end cap
The length in tube rear end face guarantees the smooth pulp of subsequent grouting material.
A kind of connection structure of half grout sleeve of reinforcing bar of roll forming, further includes that upper layer prefabricated components 12 and lower layer are prefabricated
Component 10 is embedded with the assembly end bar 8 for stretching out 10 top of lower layer's prefabricated components, the upper layer in lower layer's prefabricated components 10
Prefabricated end bar 1 is embedded in prefabricated components 12, assembly end bar 8 is arranged in a one-to-one correspondence with prefabricated end bar 1.
It is reserved with grouted joint between the top side face of lower layer's prefabricated components 10 and the bottom side of upper layer prefabricated components 12,
The grouted joint fills joint grouting material 14.
Half grout sleeve of reinforcing bar is embedded in bottom and prefabricated end bar 1 or the assembly side steel of upper layer prefabricated components 12
The number of muscle 8 is arranged in a one-to-one correspondence, and the grout outlet 5 is connected to the outer wall of upper layer prefabricated components 12 with grouting port 7.
The outer surface mantle fiber of the bottom end of the prefabricated end bar 1 has external screw thread 17, and the external screw thread 17 is normal tape
The direct mantle fiber of rib reinforcement or upset rear mantle fiber are processed to be formed.The internal screw thread 2 of the external screw thread 17 and prefabricated end cap cylinder is adapted.
The bottom end of the prefabricated end bar 1 is inserted into prefabricated end cap cylinder 3 and is threadedly coupled with it.
The bottom face of the assembly side sleeve 11 is concordant with the bottom face of upper layer prefabricated components 12, the assembly end bar 8
It stretches out in the partial insertion assembly side sleeve 11 of upper layer prefabricated components 12 and joint grouting material 14.The assembly end bar 8 is
Common Ribbed Bar or the upset processing in end.It assembles and is reserved between the top end face of end bar 8 and the bottom face of prefabricated end cap cylinder 3
There is assembly space, the top end face of assembly end bar 8 protrudes into the height that position is no more than grout outlet 5.It is filled in the assembly side sleeve
Completely there is the sleeve grouting material 9 by grouting port inflow, grout outlet outflow, the grouting port and grout outlet pass through plug and block.
In the present embodiment, the height b of the assembly space is not less than 20mm, and the height of the assembly space is to guarantee to assemble end bar
It is not contacted after insertion subject to prefabricated end cap cylinder.
In the present embodiment, the upper layer prefabricated components 12 and lower layer's prefabricated components 10 be vertical prefabricated components cylinder or
Wall.Referring to shown in Fig. 3-4, the connection structure further includes horizontal superposed member, and the horizontal superposed member includes prefabricated bottom
Portion 15 and cast-in-place top 13, the top side face of lower layer's prefabricated components 10 is concordant with the bottom side of prefabricated bottom 15, the lower layer
The top of prefabricated components 10 pours the concrete 16 with cast-in-place 13 formed by integrally casting of top, either flush, the concrete 16
Grouted joint is reserved between top side face and upper layer prefabricated components 12, the grouted joint fills joint grouting material 14.
For this connection structure when engineering site is constructed, specific construction procedure is as follows:
Step 1 installs lower layer's prefabricated components 10；
Step 2 installs prefabricated bottom 15；
Step 3 pours cast-in-place top 13；
Step 4 pours seam grouting material 14；
Step 5 installs upper layer prefabricated components 12, and assembly end bar 8 is inserted into half grout sleeve of reinforcing bar, is inserted as required
Enter depth and fixation；
Step 6 is poured into sleeve grouting material 9 in sleeve by grouting port 7 using dedicated grouting equipment, until grout outlet
Until 5 pulps, grout outlet 5 and grouting port 7 are blocked using plug immediately after stopping grouting；
Step 7, after sleeve grouting material reaches design strength, construction is finished.
Claims (9)
1. a kind of half grout sleeve of reinforcing bar of roll forming, including cylinder, it is characterised in that: the cylinder by assembly side sleeve and
Prefabricated end sleeve connection composition,
The assembly side sleeve (11) is that the steel pipe with one group of rolling groove, rolling are formed by rolling in the outer surface of its barrel
Outer surface of the slot (6) at barrel rolling forms annular groove, and inner surface of the rolling groove at barrel rolling forms recessed with annular
Annular convex, the front end barrel of assembly side sleeve are provided with grouting port (7) slot accordingly, and the rear end barrel of assembly side sleeve is opened
There are grout outlet (5),
The prefabricated end cap cylinder (3) is formed by rod iron or thick steel pipe entirety turning, and the inner wall mantle fiber of prefabricated end cap cylinder forms interior spiral shell
Line (2), the prefabricated end cap cylinder are variable cross-section sleeve, are inside contracted on the outside of the front end barrel of prefabricated end cap cylinder as plug division
(31), the internal diameter of barrel outer diameter and assembly side sleeve (11) after inside contracting is adapted, and the rear end of prefabricated end cap cylinder is non-grafting
Portion (32), outer diameter is identical as the outer diameter of assembly side sleeve (11),
Oblique transition anchor ring (33) is set between the plug division (31) and non-plug division (32) and carries out variable cross-section transition, plug division
(31) rear end of plugging in fitting end cap cylinder (11) passes through one simultaneously between the rear end face and transition anchor ring (33) of assembly side sleeve
Lap welding adapter ring (4) is connected as one.
2. half grout sleeve of reinforcing bar of roll forming according to claim 1, it is characterised in that: rolling groove (6) edge
The length direction of assembly side sleeve is evenly spaced on or unevenly spaced distribution.
3. half grout sleeve of reinforcing bar of roll forming according to claim 1, it is characterised in that: the transition anchor ring (33)
The plane for being 45 degree for inner concave or oblique angle.
4. half grout sleeve of reinforcing bar of roll forming according to claim 1 or 3, it is characterised in that: the welding circle
Cross section is annular, which is not less than the maximum cross section area of prefabricated end cap cylinder.
5. half grout sleeve of reinforcing bar of roll forming according to claim 1, it is characterised in that: the plug division (31)
Length is not less than the half of prefabricated end cap cylinder (3) total length, the depth in plug division (31) plugging in fitting end cap tube rear end portion
Shorter than length of the grout outlet (5) apart from assembly side sleeve rear end face.
6. a kind of connection structure of half grout sleeve of reinforcing bar including roll forming described in claim 1-5 any one, also
Including upper layer prefabricated components (12) and lower layer's prefabricated components (10), it is pre- that stretching lower layer is embedded in lower layer's prefabricated components (10)
Assembly end bar (8) at the top of component (10) processed, the upper layer prefabricated components (12) are interior to be embedded with prefabricated end bar (1), is assembled
End bar (8) is arranged in a one-to-one correspondence with prefabricated end bar (1), it is characterised in that:
It is reserved with grouted joint between the top side face of lower layer's prefabricated components (10) and the bottom side of upper layer prefabricated components (12),
The grouted joint fills joint grouting material (14),
Half grout sleeve of reinforcing bar is embedded in bottom and prefabricated end bar (1) or the assembly side steel of upper layer prefabricated components (12)
The number of muscle (8) is arranged in a one-to-one correspondence, and the grout outlet (5) is connected to the outer wall of upper layer prefabricated components (12) with grouting port (7),
The outer surface mantle fiber of the bottom end of the prefabricated end bar (1) has external screw thread (17), the external screw thread (17) with it is prefabricated
The internal screw thread (2) of end cap cylinder is adapted, and the bottom end of the prefabricated end bar (1) is inserted into prefabricated end cap cylinder (3) and its screw thread
Connection,
The bottom face of the assembly side sleeve (11) is concordant with the bottom face of upper layer prefabricated components (12), the assembly end bar
(8) it stretches out in the partial insertion assembly side sleeve (11) of upper layer prefabricated components (12) and joint grouting material (14), assembly side steel
The top end face of muscle (8) protrudes into the height that position is no more than grout outlet (5), is filled in the assembly side sleeve through grouting port stream
Enter, the sleeve grouting material (9) of grout outlet outflow, the grouting port and grout outlet are blocked by plug.
7. the connection structure of half grout sleeve of reinforcing bar of roll forming according to claim 6, it is characterised in that: described outer
Mantle fiber is processed to be formed after screw thread (17) is the direct mantle fiber of Ribbed Bar or is upset.
8. the connection structure of half grout sleeve of reinforcing bar of roll forming according to claim 6, it is characterised in that: on described
Layer prefabricated component (12) and lower layer's prefabricated components (10) are the cylinder or wall of vertical prefabricated components.
9. the connection structure of half grout sleeve of reinforcing bar of roll forming according to claim 8, it is characterised in that: the company
Binding structure further includes horizontal superposed member, and the horizontal superposed member includes prefabricated bottom (15) and cast-in-place top (13), described
The top side face of lower layer's prefabricated components (10) is concordant with the bottom side of prefabricated bottom (15), the top of lower layer's prefabricated components (10)
Pour the concrete (16) with cast-in-place top (13) formed by integrally casting, either flush, the top side face of the concrete (16) with it is upper
It is reserved with grouted joint between layer prefabricated component (12), the grouted joint fills joint grouting material (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820102580.9U CN208251467U (en) | 2018-01-22 | 2018-01-22 | A kind of half grout sleeve of reinforcing bar and its connection structure of roll forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820102580.9U CN208251467U (en) | 2018-01-22 | 2018-01-22 | A kind of half grout sleeve of reinforcing bar and its connection structure of roll forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208251467U true CN208251467U (en) | 2018-12-18 |
Family
ID=64620482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820102580.9U Active CN208251467U (en) | 2018-01-22 | 2018-01-22 | A kind of half grout sleeve of reinforcing bar and its connection structure of roll forming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208251467U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668775A (en) * | 2021-08-20 | 2021-11-19 | 南通方晟新材料科技有限公司 | Sleeve group with positioning device and prefabrication construction method |
-
2018
- 2018-01-22 CN CN201820102580.9U patent/CN208251467U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668775A (en) * | 2021-08-20 | 2021-11-19 | 南通方晟新材料科技有限公司 | Sleeve group with positioning device and prefabrication construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103452246B (en) | The grouting deformed steel pipe box cylinder that the slurry anchor docking of a kind of reinforcing bar connects | |
| CN102116075B (en) | Novel joint prepared from cement grout and steel bars | |
| CN104264787B (en) | Prefabricated concrete member, assembled concrete member and fabricating method through straight thread and nut locking anchor grouting sleeve connection | |
| CN108301567A (en) | Antidetonation self-locking rolls half grout sleeve processing method, concrete member processing method | |
| CN108301570A (en) | Half grout sleeve processing method of antidetonation self-locking, concrete member processing method | |
| CN208251467U (en) | A kind of half grout sleeve of reinforcing bar and its connection structure of roll forming | |
| CN105781020A (en) | Grouting sleeve and prefabricated member | |
| CN205976235U (en) | Grout sleeve and prefab | |
| CN204456670U (en) | Fabricated construction straight screw sleeve connection joint | |
| CN105781027A (en) | Grouting sleeve and prefabricated member | |
| CN205712760U (en) | A kind of grout sleeve and prefabricated component | |
| CN205712761U (en) | A kind of grout sleeve and prefabricated component | |
| CN205712752U (en) | A kind of grout sleeve and prefabricated component | |
| CN205712767U (en) | A kind of grout sleeve and prefabricated component | |
| CN205917995U (en) | Grout sleeve and prefab | |
| CN205712765U (en) | A kind of grout sleeve and prefabricated component | |
| CN205917993U (en) | Grout sleeve and prefab | |
| CN205976234U (en) | Grout sleeve and prefab | |
| CN109441016A (en) | Prefabricated concrete structure column steel pipe socket shell ring point and preparation method thereof | |
| CN105756290A (en) | Grouting sleeve and pre-fabricated part | |
| CN205712770U (en) | A kind of grout sleeve and prefabricated component | |
| CN205976236U (en) | Grout sleeve and prefab | |
| CN205712762U (en) | A kind of grout sleeve and prefabricated component | |
| CN105781021A (en) | Grouting sleeve and prefabricated piece | |
| CN205712772U (en) | A kind of grout sleeve and prefabricated component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100037 No. three Li River Road, Beijing, Haidian District, 15 Patentee after: CHINA STATE CONSTRUCTION ENGINEERING Corp.,Ltd. Patentee after: China Construction Engineering Industry Technology Research Institute Co.,Ltd. Address before: 100037 No. three Li River Road, Beijing, Haidian District, 15 Patentee before: CHINA STATE CONSTRUCTION ENGINEERING Corp.,Ltd. Patentee before: ZHONGJIAN ENGINEERING RESEARCH INSTITUTE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |