CN202266039U - Sleeve pressure type grout injection construction device for steel bar connection - Google Patents
Sleeve pressure type grout injection construction device for steel bar connection Download PDFInfo
- Publication number
- CN202266039U CN202266039U CN 201120407401 CN201120407401U CN202266039U CN 202266039 U CN202266039 U CN 202266039U CN 201120407401 CN201120407401 CN 201120407401 CN 201120407401 U CN201120407401 U CN 201120407401U CN 202266039 U CN202266039 U CN 202266039U
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- China
- Prior art keywords
- prefabricated units
- sleeve
- lower member
- reinforcing bar
- construction device
- 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.)
- Withdrawn - After Issue
Links
- 239000011440 grout Substances 0.000 title claims abstract description 36
- 238000010276 construction Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 title abstract description 6
- 239000010959 steel Substances 0.000 title abstract description 6
- 238000002347 injection Methods 0.000 title abstract 7
- 239000007924 injection Substances 0.000 title abstract 7
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- 239000004570 mortar (masonry) Substances 0.000 claims description 16
- 230000009471 action Effects 0.000 claims description 13
- 238000000151 deposition Methods 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 5
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000007569 slipcasting Methods 0.000 description 13
- 239000002002 slurry Substances 0.000 description 10
- 239000004567 concrete Substances 0.000 description 6
- 238000009415 formwork Methods 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The utility model relates to the technical field of building construction, in particular to a sleeve pressure type grout injection construction device for steel bar connection, which comprises a lower part with an assembly steel bar and a prefabricated part embedded with a plurality of connecting sleeves. The sleeve pressure type grout injection construction device is characterized by further comprising a pressure gauge, a grout injection pipe, a plurality of safety valves, a sealing template and at least one elastic gasket. The pressure gauge is installed at the position of any one overflowing hole of the plurality of connecting sleeves, the grout injection pipe is installed at the position of a grout filling hole of a connecting sleeve, and the plurality of safety valves are installed at the positions of overflowing holes and grout filling holes of the other connecting sleeves in one-to-to corresponding mode. The elastic gasket is wrapped on the surface of the lower part and the surface of the prefabricated part, the sealing template is sleeved outside the elastic gasket, and the sealing template and the elastic gasket are pressed and fixed on the prefabricated part and the lower part through connecting pieces. The sleeve pressure type grout injection construction device for steel bar connection has the advantages of improving the percent of pass of grout injection of the connecting sleeves.
Description
Technical field
The utility model relates to technical field of building construction, is specifically related to a kind of sleeve force due to centrifugal action formula mortar depositing construction device that reinforcing bar connects that is used for.
Background technology
In the prior art that building reinforced concrete is built, two reinforcing bars are connected one mainly contain following several kinds of modes: the mutual welding of reinforcing bar, sleeve pipe press joining method, crooked binding method.The construction of above-mentioned several kinds of connected modes is comparatively complicated, and must before concreting, accomplish the reinforcing bar connection, is not suitable for the assembling construction of precast concrete.And in the construction of prefabricated reinforced concrete structure, adopt a kind of reinforcing steel bar connecting sleeve tube to connect usually.This connected mode principle is roughly following: see through the hollow type reinforcing steel bar connecting sleeve tube of casting, reinforcing bar penetrates sleeve inner from both ends open, need not overlap or fuse, and between reinforcing bar and sleeve, fills the structural mortar of high strength microdilatancy, promptly accomplishes the steel bar joining action.The mechanism of its connection mainly receives the Shu Zuoyong that encloses of sleeve with mortar; Add and itself have the microdilatancy characteristic; Positive acting power between enhancing and reinforcing bar, sleeve inboard by this, reinforcing bar promptly by the frictional force of this positive force and rough surface generation, transmits reinforcement stresses.Grout sleeve syndeton bonding strength is good, and easy to operate, in the prefabricated reinforced concrete structure, is used widely.
But in the above-mentioned sleeve connected mode; Usually adopt the mode that is positioned at the top of overfolw hole in the grout hole; Grouting is from the grout hole of its sidewall, to pour into the structural mortar of high strength microdilatancy, the slit that filled with mortar tube wall and reinforcing bar form, and under the effect of gravity, flow out from overfolw hole.Generally can not poured into slurries so be positioned at the grout hole superjacent air space in the sleeve cavity, reduced bonding strength.And in filling process, between the formed slit of tube wall and reinforcing bar, especially have certain proportion in the gap of two steel bar ends and hole occurs, cause the bonding strength of reinforcing bar to reduce.And when prefabricated building components was installed, whether the reinforced bar sleeve after grouting is accomplished did not have plant and instrument can nondestructive testing qualified, and not with the method for its dismounting.In case resident air and then hole occurs in the slip casting will cause building potential safety hazard to occur.Still do not have at present and a kind ofly can guarantee branch sleeve grouting qualified constructure scheme fully.
Summary of the invention
The purpose of the utility model is the weak point according to above-mentioned prior art; A kind of sleeve force due to centrifugal action formula mortar depositing construction device that reinforcing bar connects that is used for is proposed; Through elastomeric pad and Sealing formboard prefabricated units and lower member are constituted a sealed whole body; And on branch sleeve, be tightly connected Grouting Pipe, pressure meter and one way valve, afterwards through the mode of pressure type slip casting, improved the qualification rate of grouting.
The purpose of the utility model is accomplished by following technical scheme:
A kind of sleeve force due to centrifugal action formula mortar depositing construction device that is used for the reinforcing bar connection; Comprise lower member with assembling reinforcing bar and the prefabricated units that are embedded with some branch sleeves; Said assembling reinforcing bar is plugged in the said branch sleeve; Offer overfolw hole on the said branch sleeve sidewall and be positioned at the grout hole of overfolw hole below, it is characterized in that: said construction equipment also comprises a pressure meter, a Grouting Pipe, some safety valves, Sealing formboard and at least one elastomeric pad; Said pressure meter is seal-installed on overfolw hole place any in said some branch sleeves; Said Grouting Pipe is seal-installed on the grout hole place of this branch sleeve, and said some safety valves are seal-installed on the overfolw hole and the grout hole place of residue branch sleeve one to one; Said elastomeric pad is coated on surface, the nearly prefabricated units of said lower member place and is coated on surface, the nearly lower member of said prefabricated units place; Said Sealing formboard is set in outside the said elastomeric pad, and through said connector said Sealing formboard, elastomeric pad is fixed on said prefabricated units and lower member.
Said prefabricated units sidewall and said lower member upper surface join and constitute L shaped structure; In the said plurality of elastic pad some are coated on said prefabricated units sidewall and the end to end closed circular that is; The residual elasticity pad is covered in said lower member upper surface and is closed circular around said prefabricated units; Said Sealing formboard shape and said prefabricated units form fit also are set with said elastomeric pad and prefabricated units; Said Sealing formboard lower end is provided with flange, reaches flange in said lower member upper surface, the said elastomeric pad and stacks successively from the bottom to top.
Said connector comprises bolt, and said bolt passes through said Sealing formboard, elastomeric pad and said prefabricated units and/or lower member bolt.
Said connector comprises the lock ring device, and said lock ring device is set in the Sealing formboard outside.
Said grout hole and overfolw hole inwall are provided with internal thread, and all have been threaded and two lead to adapter, and said two lead to and take over the other end connection transition nuts that has been threaded, and said connection transition nuts thread seal connects said one way valve, pressure meter and Grouting Pipe.
Said grout hole is positioned at the bottom of said branch sleeve sidewall.
The utility model has the advantages that: simple in structure, easy to use; Improved the qualification rate of branch sleeve grouting greatly.
Description of drawings
Fig. 1 is the utility model embodiment 1 device overall structure sketch map;
Fig. 2 is the local enlarged diagram of Fig. 1;
Fig. 3 is embodiment 1 a formwork seal structural profile sketch map;
Fig. 4 is embodiment 2 formwork seal structural profile sketch mapes.
The specific embodiment
Through embodiment the utility model characteristic and other correlated characteristic are done further explain below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
Shown in Fig. 1-4, mark 1-18 is respectively among the figure: prefabricated units 1, branch sleeve 2, lower member 3, elastomeric pad 4, Sealing formboard 5, adjustment bolt 6, stirrup 7, precast reinforced 8, assembling reinforcing bar 9, flange 10, two lead to take over 11, transition attaching nut 12, grouting pressure table 13, one way valve 14, grouting pump 15, Grouting Pipe 16, grout hole 17, overfolw hole 18.
Embodiment 1:
Referring to accompanying drawing 1, a kind of sleeve force due to centrifugal action formula mortar depositing construction device that is used for the reinforcing bar connection relates generally between prefabricated units 1 and the lower member 3 fixing through branch sleeve 2 slip castings connection.Lower member 3 upper surfaces are raised with assembling reinforcing bar 9, and prefabricated units 1 are held on the lower member 3.Prefabricated units 1 are rectangular-shaped structure, and its four sidewalls join with lower member 3 upper surfaces respectively and constitute L shaped turning.Prefabricated units 1 inside be embedded with some precast reinforced 8 with some branch sleeves 2, it is precast reinforced 8 that the opening of branch sleeve 2 upper ends is fitted with, lower ending opening is fitted with assembling reinforcing bar 9.Offer on the sidewall of branch sleeve 2 and grout hole of its internal communication 17 and overfolw hole 18, wherein overfolw hole 18 is positioned at the top of grout hole 17.Especially it should be noted that owing to adopt overfolw hole 18 to be positioned at the tube-in-tube structure of the top of grout hole 17 here, be different from conventional mode from bottom to top and be in the milk, but adopt high pressure slip casting from lower to upper, so just need the formwork seal structure to seal.After branch sleeve 2 inside pour into slurries, precast reinforced 8 and assembling reinforcing bar 9 between promptly connect through branch sleeve 2 fixing.But common grouting mode can't guarantee that its connection is all qualified, so guarantee its qualification rate through the mode of high pressure slip casting.For this reason, set up the formwork seal structure, mainly comprised elastomeric pad 4 and Sealing formboard 5.The concrete structure of above-mentioned related device is following:
Because prefabricated units 1 have L shaped turning with lower member 3; So adopting, elastomeric pad 4 divides body structure; Be that in the plurality of elastic pad 4 some are coated on the nearly lower member of prefabricated units 1 sidewall 3 places; And the end to end closed circular that is, 4 upper surfaces that place lower member 3 of remaining other elastomeric pads, and at prefabricated units 1 outer rim formation closed circular.The shape of Sealing formboard 5 main bodys and said prefabricated units 1 form fit have rectangular-shaped inner chamber, and its lower end horizontal-extending are provided with flange 10.The main part of Sealing formboard 5 is set in outside elastomeric pad 4 and the prefabricated units 1, and through stirrup 7 Sealing formboard, elastomeric pad 4 and prefabricated units 1 three is fixed.10 of flanges are pressed on the elastomeric pad 4 that is arranged on the lower member 3, and pass through flange 10, the elastomeric pad 4 and lower member 3 bolts of said Sealing formboard 5 through adjustment bolt 6.Thus, through elastomeric pad 4 and Sealing formboard 5 prefabricated units 1 and lower member 3 are sealed into one.The elastomeric material that elastomeric pad 4 can adopt intensity and elasticity to satisfy required performance is processed, like vulcanized butyl rubber etc. not.
For pouring into slurries in the inner chamber that is implemented in branch sleeve 2, the side-walls of branch sleeve 2 nearly bottoms offers the grout hole 17 with its internal communication, and grout hole 17 is by the outward extending pipe shape of branch sleeve 2 sidewalls; The side-walls of nearly upper end offers the overfolw hole 18 with its internal communication on the branch sleeve 2, and overfolw hole 10 is by the outward extending pipe shape of branch sleeve 2 sidewalls equally; The internal diameter of grout hole 17 is greater than overfolw hole 18 internal diameters.Be similarly the effect of playing sealing, grout hole 17 and overfolw hole 18 inwalls are provided with internal thread 8, are connected with Grouting Pipe 16 parts such as grade through the mode that is threaded, and have guaranteed the sealing of grouting.
In conjunction with the specific descriptions of above-mentioned apparatus structure, be used for that sleeve force due to centrifugal action formula mortar depositing construction device that reinforcing bar connects is installed and the concrete steps during construction following:
Said prefabricated units 1 and lower member 3 butt joint completion;
In said some branch sleeves in prefabricated units 1; Select any branch sleeve 2; And the Grouting Pipe 16 that on the grout hole 17 of this branch sleeve 2, is tightly connected, the overfolw hole 18 grouting pressure table 13 that is tightly connected, an one way valve 14 all is tightly connected on the grout hole 17 of residue branch sleeve 2 and the overfolw hole 18.Because lower member 3 has the slit with lower member 3 joints, branch sleeve 2 both ends open places have the slit equally, so be in the state of connection between the branch sleeve 2.Slurries can overflow from the lower ending opening of the branch sleeve 2 of current slip casting during slip casting, and get in other branch sleeves 2, so need on the grout hole 17 of the branch sleeve 2 of slip casting and the overfolw hole 18 one way valve not to be set;
Surface at said prefabricated units 1 nearly lower member 3 places coats elastomeric pad 4, and coats elastomeric pad 4 on surface, lower member 3 nearly prefabricated units 1 place.The said Sealing formboard 5 of suit on elastomeric pad 4.Adopt adjustment bolt 6 and/or stirrup 7 that said Sealing formboard 5, elastomeric pad 4 are fixed on said prefabricated units 1 and lower member 3 at last;
Adopt air pump in branch sleeve 2, to ventilate, with the sealing performance at the threaded connection place, elastomeric pad 4 and Sealing formboard 5 places that test said branch sleeve 2 through Grouting Pipe 16.During ventilation, the gas that pours in the branch sleeve 2 enters in the inside and both gaps of prefabricated units 1 and lower member 3 from both ends open, and by elastomeric pad 4 and Sealing formboard 5 shutoff.So work as grouting pressure table 13 reading just often, the said structure sealing performance is qualified, carries out next step; Like undesired (pressure is less than normal value), go wrong the test of ventilating again after inspection and the correction in the then above-mentioned hermetically-sealed construction;
Drive through grouting pump 15, slurries are pumped in the current branch sleeve 2 through Grouting Pipe 16;
After grouting pressure table 13 shows that pressure reaches threshold value, stop slip casting.Threshold value described herein should be according to the concrete specification of grouting pump 15, Grouting Pipe 16, branch sleeve 2, and the sealing performance of hermetically-sealed construction is carried out concrete selection.Before practice of construction, should test repeatedly, reach how many times to confirm that pressure in branch sleeve 2 and the member is minimum, can guarantee that its inside hole can not occur, manometric threshold value when this numerical value is slip casting.
After stopping slip casting, unload Grouting Pipe 16 and grouting pressure table 13 on this branch sleeve 2, and the one way valve 14 that on its grout hole 17 and overfolw hole 18, is tightly connected;
In above-mentioned residue branch sleeve 2, select any one, at its grout hole 17 Grouting Pipe 16, overfolw hole 18 grouting pressure table 13 that is tightly connected that is tightly connected;
Slurries are pumped in the current branch sleeve 2 through Grouting Pipe 16; Because during first branch sleeve 2 grouting; Slurries have got in all the other branch sleeves 2, so this step reality is confirmed step for mending slurry, treat to stop slip casting after pressure meter demonstration pressure reaches threshold value.Successively residue branch sleeve 2 being mended slurry afterwards confirms;
After slip casting is accomplished, treat that slurries solidify precast reinforced 8 on the prefabricated units 1 of back and are connected with assembling reinforcing bar 9 on the lower member 3 and finish.
Embodiment 2:
Other structures of present embodiment are identical with embodiment 1, and the formwork seal structure under the different building structure mainly is provided, and referring to Fig. 4, lower member 3 has identical cross section with prefabricated units 1, so can adopt an elastomeric pad 4 that the two is sealed simultaneously.Be that 4 times halves of elastomeric pad are coated on surface, lower member 3 nearly prefabricated units 1 place, its first half is coated on surface, prefabricated units 1 nearly lower member 3 places, and the whole end to end closed circular that is.Sealing formboard 5 then integral body compresses sealing through twice stirrup 7 afterwards with elastomeric pad 4 suits.
Although abovely carry out detailed description through numerous different embodiment for the utility model embodiment, the scope of law that it will be appreciated by those skilled in the art that this description is limited the words of the utility model appending claims.It only is exemplary that this detailed description should be interpreted as, rather than describes each possible embodiment.For the sealing of using reinforcing steel bar connecting sleeve tube 2 positions in the architectural construction; Should according to the prefabricated units that are embedded with branch sleeve 21 and with the concrete shape of the lower member 3 of prefabricated units 1 assembling; And the structure of the two joint; Select the concrete structure of elastomeric pad 4 and Sealing formboard 5, and the two is pressed abd fixed on prefabricated units 1 and the lower member 3 through suitable connector.
Claims (6)
1. one kind is used for the sleeve force due to centrifugal action formula mortar depositing construction device that reinforcing bar connects; Comprise lower member with assembling reinforcing bar and the prefabricated units that are embedded with some branch sleeves; Said assembling reinforcing bar is plugged in the said branch sleeve; Offer overfolw hole on the said branch sleeve sidewall and be positioned at the grout hole of overfolw hole below, it is characterized in that: said construction equipment also comprises a pressure meter, a Grouting Pipe, some safety valves, Sealing formboard and at least one elastomeric pad; Said pressure meter is seal-installed on overfolw hole place any in said some branch sleeves; Said Grouting Pipe is seal-installed on the grout hole place of this branch sleeve, and said some safety valves are seal-installed on the overfolw hole and the grout hole place of residue branch sleeve one to one; Said elastomeric pad is coated on surface, the nearly prefabricated units of said lower member place and is coated on surface, the nearly lower member of said prefabricated units place; Said Sealing formboard is set in outside the said elastomeric pad, and through said connector said Sealing formboard, elastomeric pad is fixed on said prefabricated units and lower member.
2. a kind of sleeve force due to centrifugal action formula mortar depositing construction device that reinforcing bar connects that is used for according to claim 1; It is characterized in that: said prefabricated units sidewall and said lower member upper surface join and constitute L shaped structure; In the said plurality of elastic pad some are coated on said prefabricated units sidewall and the end to end closed circular that is; The residual elasticity pad is covered in said lower member upper surface and is closed circular around said prefabricated units; Said Sealing formboard shape and said prefabricated units form fit also are set with said elastomeric pad and prefabricated units; Said Sealing formboard lower end is provided with flange, reaches flange in said lower member upper surface, the said elastomeric pad and stacks successively from the bottom to top.
3. a kind of sleeve force due to centrifugal action formula mortar depositing construction device that reinforcing bar connects that is used for according to claim 1; It is characterized in that: said connector comprises bolt, and said bolt passes through said Sealing formboard, elastomeric pad and said prefabricated units and/or lower member bolt.
4. a kind of sleeve force due to centrifugal action formula mortar depositing construction device that reinforcing bar connects that is used for according to claim 1, it is characterized in that: said connector comprises the lock ring device, said lock ring device is set in the Sealing formboard outside.
5. a kind of sleeve force due to centrifugal action formula mortar depositing construction device that reinforcing bar connects that is used for according to claim 1; It is characterized in that: said grout hole and overfolw hole inwall are provided with internal thread; And all be threaded and two led to adapter; Said two lead to and take over the other end connection transition nuts that has been threaded, and said connection transition nuts thread seal connects said one way valve, pressure meter and Grouting Pipe.
6. a kind of sleeve force due to centrifugal action formula mortar depositing construction device that reinforcing bar connects that is used for according to claim 1, it is characterized in that: said grout hole is positioned at the bottom of said branch sleeve sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120407401 CN202266039U (en) | 2011-10-24 | 2011-10-24 | Sleeve pressure type grout injection construction device for steel bar connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120407401 CN202266039U (en) | 2011-10-24 | 2011-10-24 | Sleeve pressure type grout injection construction device for steel bar connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266039U true CN202266039U (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120407401 Withdrawn - After Issue CN202266039U (en) | 2011-10-24 | 2011-10-24 | Sleeve pressure type grout injection construction device for steel bar connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266039U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425309A (en) * | 2011-10-24 | 2012-04-25 | 上海市第二市政工程有限公司 | Sleeve pressure grouting construction device for steel bar connection |
| CN104533022A (en) * | 2014-12-12 | 2015-04-22 | 广西科技大学 | Reinforcement sleeve and template connecting structure |
| CN104989038A (en) * | 2015-07-22 | 2015-10-21 | 山东明达建筑科技有限公司 | Combined grouting sleeve and construction method of combined grouting sleeve |
| CN108086158A (en) * | 2016-11-23 | 2018-05-29 | 重庆市中科大业建筑科技有限公司 | A kind of assembled steel tube constraint reinforced concrete structure grouting locking device |
-
2011
- 2011-10-24 CN CN 201120407401 patent/CN202266039U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425309A (en) * | 2011-10-24 | 2012-04-25 | 上海市第二市政工程有限公司 | Sleeve pressure grouting construction device for steel bar connection |
| CN102425309B (en) * | 2011-10-24 | 2014-07-02 | 上海城建市政工程（集团）有限公司 | Sleeve pressure type grouting construction device for connection of steel bars |
| CN104533022A (en) * | 2014-12-12 | 2015-04-22 | 广西科技大学 | Reinforcement sleeve and template connecting structure |
| CN104989038A (en) * | 2015-07-22 | 2015-10-21 | 山东明达建筑科技有限公司 | Combined grouting sleeve and construction method of combined grouting sleeve |
| CN108086158A (en) * | 2016-11-23 | 2018-05-29 | 重庆市中科大业建筑科技有限公司 | A kind of assembled steel tube constraint reinforced concrete structure grouting locking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI UBAN CONSTRUCTION GROUP MUNICIPAL ENGINEE Free format text: FORMER NAME: SHANGHAI NO.2 MUNICIPAL ENGINEERING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 200232 Xuhui District, Liuzhou Wu Road, Lane No. 13, No. 3, No. Patentee after: Shanghai urban construction Municipal Engineering (Group) Co., Ltd. Address before: 200232 Xuhui District, Liuzhou Wu Road, Lane No. 13, No. 3, No. Patentee before: Shanghai No.2 Municipal Engineering Co., Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20120606 Effective date of abandoning: 20140702 |
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| RGAV | Abandon patent right to avoid regrant |