CN106958297A - A kind of outer wall of basement hole to be provided temporary blocking device and method for blocking - Google Patents
A kind of outer wall of basement hole to be provided temporary blocking device and method for blocking Download PDFInfo
- Publication number
- CN106958297A CN106958297A CN201710309027.2A CN201710309027A CN106958297A CN 106958297 A CN106958297 A CN 106958297A CN 201710309027 A CN201710309027 A CN 201710309027A CN 106958297 A CN106958297 A CN 106958297A
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- China
- Prior art keywords
- hole
- block head
- cover plate
- blocking device
- basement
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Revetment (AREA)
Abstract
The present invention discloses a kind of outer wall of basement hole to be provided temporary blocking device, including outer end blocking component, inner blocking component and the connecting rod for connecting two components；The outer end plugging part includes being provided with several erecting beds on the block head of a hemisphere face structure, the inwall of block head, and the center of erecting bed is provided with screwed hole；The inner blocking component includes offering quantity, the position through hole consistent with the erecting bed on circular cover plate, cover plate；The two ends of the connecting rod are respectively arranged with the screwed hole connection on external screw thread, one end and block head of the connecting rod, and the other end passes through through hole, locked by nut.The temporary blocking device of the present invention is simple in construction, the construction of outer wall of basement reserving hole temporary plugging can be effectively applicable to, and convenient disassembly, on structure substantially without breakage influence, outer wall of basement waterproof construction or backfill are not interfered with, effectively evade hole pollution and seepage, appearance looks elegant is generous, meets Standardization Development trend.
Description
Technical field
The present invention relates to a kind of hole to be provided plugging device field, specifically a kind of temporary plugging of outer wall of basement hole to be provided
Device.
Background technology
At present, most of engineering outer wall of basement waterproof construction or backfill operation when, to avoid exterior wall reserving hole from being broken
Bad, pollution, can use the materials such as fragment of brick, concrete stone, cardboard block, cystosepiment or cement mortar by hole to be provided temporary plugging.But
There are many deficiencies in this kind of plugging material and method for blocking, such as：Closure is not tight, later stage cleaning is troublesome, can produce and build
Building refuse, closure compare cost and manually, easily cause damage etc. to reserved sleeve pipe and waterproof roll.The hair of green construction is not met
Exhibition is required, therefore how to carry out standardization, standardization, recyclable construction for the temporary plugging of outer wall of basement hole to be provided, is needed
Further to work out the outer wall of basement reserving hole temporary plugging construction technology for more meeting green construction demand for development.
The content of the invention
Goal of the invention：Present invention aims at there is provided a kind of underground of regularization tool-type in view of the shortcomings of the prior art
Room exterior wall hole to be provided temporary blocking device, can be effectively applicable to the construction of outer wall of basement reserving hole temporary plugging, and dismounting side
Just, outer wall of basement waterproof construction or backfill are not interfered with substantially without breakage influence on structure, effectively evades hole pollution and ooze
Leakage；
Another object of the present invention is to provide a kind of to carry out outer wall of basement hole to be provided using above-mentioned plugging device and seal temporarily
Stifled method.
Technical scheme：Outer wall of basement hole to be provided temporary blocking device of the present invention, including outer end blocking component, the inner
Blocking component and some connecting rods for connecting two components；
The outer end plugging part includes the block head of a hemisphere face structure, and the block head is located in the hole to be provided, directly
Footpath is consistent with the diameter of the hole to be provided, its medial extremity towards hole to be provided that is open；If being provided with the inwall of the block head
The dry erecting bed parallel to block head axial direction, the center of the erecting bed is provided with screwed hole；
The inner blocking component includes a circular cover plate, and the diameter with diameter greater than the hole to be provided of the cover plate covers
Cover and quantity, the position through hole consistent with the erecting bed are offered on the outside in the medial extremity of the hole to be provided, the cover plate；
The quantity of the connecting rod is consistent with the quantity of the erecting bed, and its length is more than the length of the hole to be provided, the company
The two ends of extension bar are respectively arranged with external screw thread, and one end of the connecting rod is connected with the screwed hole on the block head, the other end
Locked through the through hole of the cover plate, and by nut.
Further preferably technical scheme is that one of outer end watertight rubber is provided with the opening of the block head to the present invention
Circle, one of inner watertight rubber circle is provided with the inside of the cover plate, be respectively used to seal the block head, cover plate with it is described pre-
Gap between box out.
Preferably, the aperture position of the block head is provided with ring-type seal plate concentric with the block head together, only
The outer ring of water plate connects with the block head, and one of groove is provided with the middle part of the outer end watertight rubber circle, the groove
Width is slightly less than the thickness of the seal plate, and the outer end watertight rubber snare is located on the seal plate, and groove stops with described
The interference fit connection of water plate.
Preferably, embedded division of the diameter less than the cylindricality of the reserved hole dia is provided with the inside of the cover plate,
The inner watertight rubber circle nesting is arranged on the embedded division, is embedded in together with the embedded division in the hole to be provided, institute
State between embedded division and inner watertight rubber circle, be interference fit between the inwall of inner watertight rubber circle and hole to be provided and connect
Connect.
Preferably, the temporary blocking device also includes the pull bar that a length is more than the length of the hole to be provided, described
Wherein one end of pull bar is as end is pushed away, and its section is regular hexagon, and the other end is provided with external screw thread, as pull end, the drawing
The diameter at end is less than the length of side of the regular hexagon for pushing away end；The inwall of the block head is provided centrally with a fixed block, described
The blind hole parallel to block head axial direction is provided with fixed block, blind hole is divided into interconnected two sections, close to block head inwall
One section be the screwed hole that is adapted with the pull end of pull bar, another section is the regular hexagon that end is adapted that pushes away with pull bar
Hole.
Preferably, the quantity of the erecting bed is 3, and even circumferential is distributed in around the fixed block.
The method that the present invention carries out outer wall of basement hole to be provided temporary plugging using above-mentioned temporary blocking device, including such as
Lower step：
（1）Hole to be provided sleeve pipe is cleared up, temporary blocking device is made；
（2）In the erecting bed that each connecting rod is screwed in block head successively, then block head is put into hole to be provided, the curved surface of block head
Outwards, the axis parallel of connecting rod and hole to be provided；
（3）Block head is pushed at outer wall of basement lateral surface, then the through-hole alignment connecting rod on cover plate is inserted in, is covered
Plate is blocked on the medial surface of hole to be provided, and the inserting end of connecting rod is locked by nut, it is ensured that cover plate is fitted tightly over reserving hole
On；
（4）When removing temporary blocking device, the nut in connecting rod is unclamped, cover plate is removed, then by block head by hole to be provided
Side or outside are taken out, each part recycling.
As further restriction, the temporary blocking device also includes a length more than the length of the hole to be provided
Pull bar, wherein one end of the pull bar is as end is pushed away, and its section is regular hexagon, and the other end is provided with external screw thread, as
Pull end, the diameter of the pull end is less than the length of side of the regular hexagon for pushing away end；The inwall of the block head is provided centrally with one
The blind hole parallel to block head axial direction is provided with fixed block, the fixed block, blind hole is divided into interconnected two sections, close
One section of block head inwall is the screwed hole being adapted with the pull end of pull bar, and another section is to hold what is be adapted with pushing away for pull bar
Regular hexagon hole；
Step（3）During middle promotion block head, end will pushed away with blind hole just in the blind hole for pushing away end insertion block head center of pull bar
Hexagon hole section is adapted to, and promotes block head to move into place by pull bar；
Step（4）In when removing temporary blocking device, remove after cover plate, the pull end of pull bar screwed in into the blind of block head center
In hole, the screw thread nose end of pull end and blind hole is connected, and hole to be provided is pulled out or exit by block head.
Beneficial effect：（1）The temporary blocking device of the present invention is simple in construction, can be effectively applicable to outer wall of basement preformed hole
Hole temporary plugging construction, and convenient disassembly, on structure substantially without breakage influence, do not interfere with outer wall of basement waterproof construction or return
Fill out, effectively evade hole pollution and seepage, appearance looks elegant is generous, meets Standardization Development trend；
（2）Using the temporary plugging method of the present invention, effective working face just can be provided after device is removed, cleaning is not required to substantially,
Save artificial and cost, and help to compress the duration, directly or indirectly reduce construction cost；Meanwhile, of the invention is interim
Plugging device can have enough to meet the need construction, and using and will not manufacture and produce building waste in demolishing process, meet green construction
Development trend；
（3）The temporary blocking device of the present invention is easy to operate, and plugging effect is good, not only can sand prevention simultaneously but also can reach preferable waterproof
Effect, will not cause damage, in the realm of building construction, with good market prospects and popularization to reserved sleeve pipe and waterproof roll
Value.
Brief description of the drawings
Fig. 1 is the structural representation of temporary blocking device of the present invention；
Fig. 2 is the radial cross-section of block head of the present invention；
Fig. 3 is the axial sectional view of block head of the present invention；
Fig. 4 is the structural representation of cover plate of the present invention；
Fig. 5 is the structural representation of connecting rod of the present invention；
Fig. 6 is the structural representation of pull bar of the present invention；
In figure, 1- block heads, 2- cover plates, 3- connecting rods, 4- pull bars, 11- seal plates, 12- outer ends watertight rubber circle, 13- are solid
Determine the inner watertight rubber circle of block, 14- erecting beds, 21- through holes, 22- embedded divisions, 23-, 41- pull ends, 42- and push away end.
Embodiment
Technical solution of the present invention is described in detail below by accompanying drawing, but protection scope of the present invention is not limited to
The embodiment.
Embodiment：A kind of outer wall of basement hole to be provided temporary blocking device, including outer end blocking component, inner blocking component
Pull bar 4 and the connecting rod 3 for connecting two components.
Structure in the present embodiment to each several part by taking the basement hole to be provided for blocking a diameter of 100mm as an example is carried out specifically
It is bright：
Outer end plugging part includes the block head 1 of a hemisphere face structure, is made using the material of stainless iron 430, the diameter of block head 1
For 100mm, wall thickness 3mm, the aperture position of block head 1 is welded with ring-type seal plate 11 concentric with block head together, seal plate
11 width are 5mm, and thickness is nested outer end watertight rubber circle 12, the gross thickness of outer end watertight rubber circle 12 on 5mm, seal plate 11
10mm, height 19.5mm, the middle part of outer end watertight rubber circle 12 are provided with one of groove, and depth of groove 5mm, width is slightly less than together
Core takes 4.5mm, and groove is connected with the interference fit of seal plate 11；
The hemisphere face of block head 1 is provided centrally with the fixed block 13 of a cylinder, and the total length 60mm of fixed block 13 is a diameter of
The blind hole parallel to block head axial direction is provided with 40mm, fixed block 13, blind hole is divided into interconnected two sections, close to closure
One section of first 1 inwall is the screwed hole being adapted with the pull end 41 of pull bar 4, and screw thread hole length is 20mm, and another section is with pushing away
The 42 regular hexagon holes being adapted are held in pushing away for pull bar 4, and length is 30mm；
Surrounding's even circumferential of fixed block 13 is distributed three erecting beds 14 parallel to block head axial direction, the end of erecting bed 14
Portion is welded on the sphere of block head 1, and erecting bed 14 is diameter 15mm, and height 30mm cylinder, its center is provided with high 20mm,
Diameter 10mm screwed hole.
Inner blocking component includes offering three positions on a circular cover plate 2, a diameter of 120mm, thick 3mm, cover plate 2
Put the through hole 21 consistent with erecting bed, a diameter of 11mm of through hole 21；The surface soldered of cover plate 2 has a diameter of 87mm, a thickness
3mm, high 13mm cylindricality embedded division 22, the outside of embedded division 22 are arranged inner watertight rubber circle 23, inner watertight rubber circle
23 thickness 5mm, be highly 10mm, inner watertight rubber circle 23 is embedded in hole to be provided together with embedded division 22, embedded division 22 with it is inner
Interference fit connection is between watertight rubber circle 23, between inner watertight rubber circle 23 and the inwall of hole to be provided.
The quantity of connecting rod 3 is consistent with the quantity of erecting bed 14, and its a diameter of 10mm, length are the width+30mm of exterior wall,
The two ends of connecting rod 3 set the thread segment of 30mm length respectively, and one end of connecting rod 3 is connected with the screwed hole on block head 1, another
The through hole 21 through cover plate is held, and is locked by nut.
The length of pull bar 4 is exterior wall width+200mm, and wherein one end of pull bar 4 is as end 42 is pushed away, and its section is the length of side
15mm regular hexagon, pushes away 42 length 60mm of end；The other end is pull end 41, is diameter 20mm thread segment, focal length 40mm.
The method that outer wall of basement hole to be provided temporary plugging is carried out using the temporary blocking device, is comprised the following steps：
（1）Hole to be provided sleeve pipe is cleared up, temporary blocking device is made；
（2）Three connecting rods 3 are screwed in the erecting bed 14 of block head 1 successively, then block head 1 is put into hole to be provided, are blocked
First 1 curved surface is outside, connecting rod 3 and the axis parallel of hole to be provided；
（3）The end 42 that pushes away of pull bar 4 is inserted in the blind hole at block head center, end 42 is pushed away and the regular hexagon hole section of blind hole is fitted
Match somebody with somebody, block head 1 is pushed to the 10mm on the outside of the outer wall of basement by pull bar 4, then by the company of alignment of through hole 21 on cover plate 2
Extension bar 3 is inserted in, and cover plate 2 is blocked on the medial surface of hole to be provided, and the inserting end of connecting rod 3 is locked by nut, it is ensured that cover plate 2 is close
It is fitted on reserving hole；
（4）When removing temporary blocking device, the nut in connecting rod 3 is unclamped, cover plate 2 is removed, the pull end 41 of pull bar 4 is screwed in
In the blind hole at the center of block head 1, pull end 41 and the screw thread nose end of blind hole are connected, and block head 1 are pulled out into hole to be provided, if underground
Possess the scope of operation on the outside of the exterior wall of room, block head 1 can also be released out of hole to be provided, each part is reclaimed, cleaned, storage, is easy to
Recycle.
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, it must not be explained
For to the limitation of itself of the invention., can be right under the premise of the spirit and scope of the present invention that appended claims are defined are not departed from
Various changes can be made in the form and details for it.
Claims (8)
1. a kind of outer wall of basement hole to be provided temporary blocking device, it is characterised in that including outer end blocking component, inner closure group
Part and some connecting rods for connecting two components；
The outer end plugging part includes the block head of a hemisphere face structure, and the block head is located in the hole to be provided, directly
Footpath is consistent with the diameter of the hole to be provided, its medial extremity towards hole to be provided that is open；If being provided with the inwall of the block head
The dry erecting bed parallel to block head axial direction, the center of the erecting bed is provided with screwed hole；
The inner blocking component includes a circular cover plate, and the diameter with diameter greater than the hole to be provided of the cover plate covers
Cover and quantity, the position through hole consistent with the erecting bed are offered on the outside in the medial extremity of the hole to be provided, the cover plate；
The quantity of the connecting rod is consistent with the quantity of the erecting bed, and its length is more than the length of the hole to be provided, the company
The two ends of extension bar are respectively arranged with external screw thread, and one end of the connecting rod is connected with the screwed hole on the block head, the other end
Locked through the through hole of the cover plate, and by nut.
2. outer wall of basement hole to be provided temporary blocking device according to claim 1, it is characterised in that the block head
It is provided with opening on the inside of one of outer end watertight rubber circle, the cover plate and is provided with one of inner watertight rubber circle, is used respectively
Gap between the sealing block head, cover plate and the hole to be provided.
3. outer wall of basement hole to be provided temporary blocking device according to claim 2, it is characterised in that the block head
Aperture position is provided with ring-type seal plate concentric with the block head together, and the outer ring of seal plate connects with the block head,
One of groove is provided with the middle part of the outer end watertight rubber circle, the width of the groove is slightly less than the thickness of the seal plate,
The outer end watertight rubber snare is located on the seal plate, and groove is connected with seal plate interference fit.
4. outer wall of basement hole to be provided temporary blocking device according to claim 3, it is characterised in that the cover plate it is interior
Side is provided with embedded division of the diameter less than the cylindricality of the reserved hole dia, and the inner watertight rubber circle nesting is arranged on
On the embedded division, it is embedded in together with the embedded division in the hole to be provided, between the embedded division and inner watertight rubber circle,
Interference fit connection is between the inwall of inner watertight rubber circle and hole to be provided.
5. outer wall of basement hole to be provided temporary blocking device according to claim 1, it is characterised in that the temporary plugging is filled
Putting also includes the pull bar that length is more than the length of the hole to be provided, wherein one end of the pull bar as pushing away end, its
Section is regular hexagon, and the other end is provided with external screw thread, as pull end, and the diameter of the pull end is less than positive six side for pushing away end
The length of side of shape；The inwall of the block head is provided centrally with being provided with a fixed block, the fixed block parallel to block head axial direction
The blind hole in direction, blind hole is divided into interconnected two sections, and one section of close block head inwall is to be adapted with the pull end of pull bar
Screwed hole, another section is to push away the regular hexagon hole that is adapted of end with pull bar.
6. outer wall of basement hole to be provided temporary blocking device according to claim 5, it is characterised in that the erecting bed
Quantity is 3, and even circumferential is distributed in around the fixed block.
7. a kind of method that temporary blocking device using described in claim 1 carries out outer wall of basement hole to be provided temporary plugging,
It is characterised in that it includes following steps：
（1）Hole to be provided sleeve pipe is cleared up, temporary blocking device is made；
（2）In the erecting bed that each connecting rod is screwed in block head successively, then block head is put into hole to be provided, the curved surface of block head
Outwards, the axis parallel of connecting rod and hole to be provided；
（3）Block head is pushed at outer wall of basement lateral surface, then the through-hole alignment connecting rod on cover plate is inserted in, is covered
Plate is blocked on the medial surface of hole to be provided, and the inserting end of connecting rod is locked by nut, it is ensured that cover plate is fitted tightly over reserving hole
On；
（4）When removing temporary blocking device, the nut in connecting rod is unclamped, cover plate is removed, then by block head by hole to be provided
Side or outside are taken out, each part recycling.
8. the method for temporary plugging according to claim 7, it is characterised in that the temporary blocking device also includes one long
Degree is more than the pull bar of the length of the hole to be provided, and wherein one end of the pull bar is as end is pushed away, and its section is regular hexagon,
The other end is provided with external screw thread, as pull end, and the diameter of the pull end is less than the length of side of the regular hexagon for pushing away end；The envelope
The inwall of plug is provided centrally with being provided with the blind hole parallel to block head axial direction, blind hole on a fixed block, the fixed block
It is divided into interconnected two sections, one section of close block head inwall is the screwed hole being adapted with the pull end of pull bar, Ling Yiduan
For the regular hexagon hole that end is adapted that pushes away with pull bar；
Step（3）During middle promotion block head, end will pushed away with blind hole just in the blind hole for pushing away end insertion block head center of pull bar
Hexagon hole section is adapted to, and promotes block head to move into place by pull bar；
Step（4）In when removing temporary blocking device, remove after cover plate, the pull end of pull bar screwed in into the blind of block head center
In hole, the screw thread nose end of pull end and blind hole is connected, and hole to be provided is pulled out or exit by block head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710309027.2A CN106958297B (en) | 2017-05-04 | 2017-05-04 | Temporary plugging device and plugging method for reserved hole in basement outer wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710309027.2A CN106958297B (en) | 2017-05-04 | 2017-05-04 | Temporary plugging device and plugging method for reserved hole in basement outer wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106958297A true CN106958297A (en) | 2017-07-18 |
| CN106958297B CN106958297B (en) | 2022-09-13 |
Family
ID=59482117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710309027.2A Active CN106958297B (en) | 2017-05-04 | 2017-05-04 | Temporary plugging device and plugging method for reserved hole in basement outer wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106958297B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542036A (en) * | 2017-09-15 | 2018-01-05 | 中铁十四局集团第五工程有限公司 | A kind of U-shaped beam hole for hoist fast plugging device and construction method |
| CN111535459A (en) * | 2020-02-21 | 2020-08-14 | 中国十七冶集团有限公司 | Simple wall-penetrating screw hole plugging process |
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| US20120222376A1 (en) * | 2006-08-04 | 2012-09-06 | Mid-Atlantic Waterproofing Of Md, Inc. | Plug and plate for waterproofing and method for using same |
| CN202730971U (en) * | 2012-08-07 | 2013-02-13 | 中国建筑第八工程局有限公司 | Decorating and blocking device for split bolt hole of fair-faced concrete wall surface |
| CN204343462U (en) * | 2014-12-18 | 2015-05-20 | 浙江欣捷建设有限公司 | Concrete construction wall-through hole blocking component |
| CN204418230U (en) * | 2014-12-31 | 2015-06-24 | 中国建筑一局(集团)有限公司 | Can have enough to meet need basement outer wall pipeline entrance to a cave shutoff blind plate of use |
| CN204510487U (en) * | 2015-02-13 | 2015-07-29 | 中冶建工集团有限公司 | Shear wall construction hole hermetically-sealed construction |
| CN204959998U (en) * | 2015-08-06 | 2016-01-13 | 南京大地建设集团有限责任公司 | End cap is sealed up in assembled shear force wall slip casting pore |
| CN205990670U (en) * | 2016-08-30 | 2017-03-01 | 河南科建建设工程有限公司 | A kind of exterior wall preformed hole leveling device |
| CN206737156U (en) * | 2017-05-04 | 2017-12-12 | 中建八局第三建设有限公司 | A kind of outer wall of basement hole to be provided temporary blocking device |
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2017
- 2017-05-04 CN CN201710309027.2A patent/CN106958297B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120222376A1 (en) * | 2006-08-04 | 2012-09-06 | Mid-Atlantic Waterproofing Of Md, Inc. | Plug and plate for waterproofing and method for using same |
| CN202730971U (en) * | 2012-08-07 | 2013-02-13 | 中国建筑第八工程局有限公司 | Decorating and blocking device for split bolt hole of fair-faced concrete wall surface |
| CN204343462U (en) * | 2014-12-18 | 2015-05-20 | 浙江欣捷建设有限公司 | Concrete construction wall-through hole blocking component |
| CN204418230U (en) * | 2014-12-31 | 2015-06-24 | 中国建筑一局(集团)有限公司 | Can have enough to meet need basement outer wall pipeline entrance to a cave shutoff blind plate of use |
| CN204510487U (en) * | 2015-02-13 | 2015-07-29 | 中冶建工集团有限公司 | Shear wall construction hole hermetically-sealed construction |
| CN204959998U (en) * | 2015-08-06 | 2016-01-13 | 南京大地建设集团有限责任公司 | End cap is sealed up in assembled shear force wall slip casting pore |
| CN205990670U (en) * | 2016-08-30 | 2017-03-01 | 河南科建建设工程有限公司 | A kind of exterior wall preformed hole leveling device |
| CN206737156U (en) * | 2017-05-04 | 2017-12-12 | 中建八局第三建设有限公司 | A kind of outer wall of basement hole to be provided temporary blocking device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542036A (en) * | 2017-09-15 | 2018-01-05 | 中铁十四局集团第五工程有限公司 | A kind of U-shaped beam hole for hoist fast plugging device and construction method |
| CN111535459A (en) * | 2020-02-21 | 2020-08-14 | 中国十七冶集团有限公司 | Simple wall-penetrating screw hole plugging process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106958297B (en) | 2022-09-13 |
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