CN220645199U - Fixing device for penetrating reserved pipe of cast-in-place concrete wall - Google Patents
Fixing device for penetrating reserved pipe of cast-in-place concrete wall Download PDFInfo
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- CN220645199U CN220645199U CN202322222375.XU CN202322222375U CN220645199U CN 220645199 U CN220645199 U CN 220645199U CN 202322222375 U CN202322222375 U CN 202322222375U CN 220645199 U CN220645199 U CN 220645199U
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- sleeve
- end cover
- reserved pipe
- wall
- reserved
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- 239000004567 concrete Substances 0.000 title claims abstract description 38
- 230000000149 penetrating effect Effects 0.000 title abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 claims 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 26
- 238000000034 method Methods 0.000 description 12
- 239000002002 slurry Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000009415 formwork Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model discloses a fixing device for penetrating a reserved pipe through a cast-in-place concrete wall, which comprises two sleeves which are coaxially arranged at intervals, wherein the rear end of each sleeve is embedded in the wall, the front end of each sleeve is flush with the wall or extends out of the wall, a template at the wall is provided with a supporting hole matched with the outer diameter of the sleeve, the middle of the reserved pipe is fixedly connected to a reinforcing steel bar structure of the wall, the two ends of each reserved pipe penetrate into the two sleeves respectively, the outer diameter of each reserved pipe is matched with the inner diameter of each sleeve to be supported by the corresponding sleeve, end cover plates cover the far ends of the two sleeves respectively, a counter-pulling screw rod penetrates through the center of the reserved pipe and is fixed by tightening the two end cover plates through nuts, and after the wall is poured and solidified, the end cover plates, the counter-pulling screw rods and the sleeves are removed, and the reserved pipe is reserved in the wall.
Description
Technical Field
The utility model relates to the technical field of concrete construction engineering, and particularly provides a fixing device for a cast-in-place concrete wall body through a reserved pipe.
Background
The cast-in-situ reinforced concrete wall is a wall manufactured by carrying out formwork supporting, steel bar binding and concrete pouring on site according to the design position, and curing and removing the formwork. The wall has the characteristics of firmness, durability, good fireproof performance and low cost. In order to realize the communication function, reserved pipes are required to be arranged at some positions of the wall body, and the wall body and the reserved pipes are poured to form an integrated structure.
At present, a method that a reserved pipe is fixed on a steel bar by welding and a template is perforated according to the size of a pipeline is adopted in construction, and the operation is simple, but due to the fact that the construction process is more in interpenetration, more in work types and large in personnel flow, trampling and unrecoverable phenomenon is unavoidable in the construction process, the phenomenon that an opening is bigger in the template perforation process is unavoidable, positioning errors of the pipeline exceed an allowable range and leakage current around the pipeline are frequently found in the later quality inspection, on one hand, the length of the pipeline extending out of a wall surface is influenced, even the inclination is caused, on the other hand, if large deviation appears, the later waterproof construction is influenced, the leakage point is formed, the later repair consumption time is long, and the construction quality and efficiency are reduced.
Therefore, it is necessary to provide a device for reinforcing the end protection of the reserved pipe which is supported and fixed and extends out of the wall body part, and improving the construction quality and efficiency.
Disclosure of Invention
Therefore, the utility model provides the fixing device for penetrating the reserved pipe through the cast-in-place concrete wall body, so that the reserved pipe is supported, fixed and protected, the problems of pipeline deviation and disturbance and wall concrete slurry leakage caused in the wall body pouring construction operation are avoided, and the construction quality and efficiency are improved.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: a fixing device for a cast-in-place concrete wall body to penetrate through a reserved pipe comprises a sleeve, an end cover plate, a split screw and an annular wing plate; the sleeve comprises two sleeves which are coaxially arranged at intervals, the rear end of each sleeve is embedded in a wall body, the front end of each sleeve is flush with the wall surface or extends out of the wall surface, a template at the wall surface is provided with a supporting hole matched with the outer diameter of the sleeve, the annular wing plate is arranged on the sleeve and fixedly connected with the template, and the annular wing plate is tightly attached to the template to seal an annular gap between the supporting hole and the sleeve; the middle of the reserved pipe is fixedly connected to a reinforcing steel bar structure of the wall body, two ends of the reserved pipe respectively penetrate into the two sleeves, and the outer diameter of the reserved pipe is matched with the inner diameter of the sleeve in size and is supported by the sleeve; the end cover plates are respectively covered at the far ends of the two sleeves, and the opposite-pulling screw rod penetrates through the center of the reserved pipe and is fastened and fixed on the two end cover plates through nuts; after the wall body is poured and solidified, the end cover plate, the opposite-pulling screw and the sleeve are removed, and the reserved pipe is reserved in the wall body.
Preferably, the sleeve is provided with an annular wing plate outside, the inner diameter of the annular wing plate is matched with and fixedly connected with the outer diameter of the sleeve, the annular wing plate is tightly attached to a template outside the wall surface and is detachably and fixedly connected with the template through a plurality of nails, and an eyelet for installing the nails is arranged outside the annular wing plate Zhou Huanbu.
Further, the sleeve comprises a first sleeve, the front end of the first sleeve is flush with the wall surface, and the annular wing plate is fixedly arranged at the front end of the sleeve and is tightly fixed with the template outside the wall surface.
Further, the sleeve comprises a second sleeve, the front end of the second sleeve extends out of the wall surface, and the annular wing plate is fixedly arranged in the middle of the sleeve and is tightly fixed with the template outside the wall surface.
Preferably, the annular wing plates are symmetrically provided with threaded holes, and ejection bolts are respectively arranged in the threaded holes.
Preferably, the center position of the end cover plate is provided with a plurality of through holes, each through hole is annularly distributed outside the center position of the end cover plate, the opposite-pulling screw rods comprise a plurality of through holes which are arranged in parallel, and each opposite-pulling screw rod respectively penetrates through the through holes opposite to the positions of the two end cover plates and is fixedly connected through nuts.
Preferably, the end cover plate is provided with a positioning boss matched with the inner diameter of the sleeve, or the end cover plate is radially provided with radial positioning rib plates, and one end of each positioning rib plate, which is far away from the center of the end cover plate, is matched with the inner diameter of the sleeve.
Preferably, the peripheral gap formed by dismantling the sleeve after the wall concrete is solidified is plugged by waterproof mortar or plugging materials.
The technical effect of the fixing device of the reservation pipe is mainly embodied in that the cast-in-place concrete wall body is provided:
(1) The sleeve pipes are coaxially arranged at intervals, the rear ends of the sleeve pipes are embedded in the wall body, the front ends of the sleeve pipes are flush with the wall surface or extend out of the wall surface, the middle of the reserved pipe is fixedly connected to a reinforcing steel bar structure of the wall body, the two ends of the reserved pipe respectively penetrate into the two sleeve pipes to be supported by the sleeve pipes, and the templates at the wall surface are provided with supporting holes matched with the outer diameter of the sleeve pipes, so that the support and fixation of the middle and the two ends of the reserved pipe are formed, and the deviation and disturbance of the reserved pipe in concrete construction are effectively avoided;
(2) The end cover plates are respectively covered at the far ends of the two sleeves, and are fixed by tightening the opposite-pull screws, so that the space formed by the sleeves and the reserved pipes is covered and blocked, the end part of the reserved pipes is protected, the part outside the wall body of the reserved pipes is prevented from being exposed, and the reserved pipes are prevented from being damaged due to trampling by constructors;
(3) Through setting up the external diameter of reserve pipe and sleeve pipe internal diameter size to the adaptation and combining, cyclic annular pterygoid lamina sets up on the sleeve pipe and with template fixed connection, cyclic annular pterygoid lamina and template closely laminate and to the annular gap shutoff between supporting hole and the sleeve pipe, effectively prevent the thick liquid problem that leaks that produces in the work progress, avoid concrete structure to appear encircling the rotten root of reserve pipe, quality problems such as later stage seepage because of leaking thick liquid, sleeve pipe, cyclic annular pterygoid lamina and tip apron demolish conveniently, improved construction quality and efficiency of construction.
Drawings
It is noted that the drawings are only for the purpose of illustrating preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures.
Fig. 1 is a schematic structural view of an embodiment of a fixing device for penetrating reserved pipes of a cast-in-place concrete wall.
Fig. 2 is a schematic view of a structure of the first sleeve detached from the end cover plate.
Fig. 3 is a schematic structural view of the first sleeve and the annular wing plate.
Fig. 4 is a schematic diagram of a structure in which the second sleeve is detached from the end cover plate.
Fig. 5 is a schematic structural view of the second sleeve and the annular wing plate.
FIG. 6 is a schematic view of an embodiment of an annular wing.
Fig. 7 is a schematic structural view of the cast-in-place concrete wall after solidification, leaving only the embedded pipe.
Description of the drawings
11-a first sleeve, 12-a second sleeve; 2-ring-shaped wing plates; 3-end cover plate, 31-eyelet, 32-ejector bolt; 41-a split screw, 42-a nut; 5-reserving a pipe; 6-template; 7-wall body.
Detailed Description
In the construction process of the cast-in-place concrete wall, the reserved pipe is directly buried in the concrete wall, the reserved pipe is welded and fixed on the steel bar in the construction process, the template is perforated according to the size of the pipeline, the construction structure lacks a firm stable supporting structure for the reserved pipe and covers and protects the end part of the reserved pipe, the reserved pipe is easy to deviate and disturb in the construction process, the positioning error of the pipeline exceeds the allowable range and the slurry leakage phenomenon, and the construction quality and efficiency are reduced.
Therefore, the utility model provides a fixing device for penetrating a reserved pipe through a cast-in-place concrete wall, the sleeves comprise two sleeves which are coaxially arranged at intervals, the rear end of each sleeve is embedded in the wall, the front end of each sleeve is flush with the wall or extends out of the wall, a template at the wall is provided with a supporting hole matched with the outer diameter of each sleeve, the middle of each reserved pipe is fixedly connected to a reinforcing steel structure of the wall, the two ends of each reserved pipe penetrate into the two sleeves respectively, the outer diameter of each reserved pipe is matched with the inner diameter of each sleeve to be supported by the corresponding sleeve, end cover plates are fixed at the two ends of each sleeve through opposite-pull screws, the end cover plates, the opposite-pull screws and the sleeves are removed after the wall is poured and solidified, and the reserved pipes are reserved in the wall, so that the problems of deviation, disturbance, slurry leakage and the like of the reserved pipes are solved, and the construction quality and efficiency are improved.
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 5, an embodiment of a fixing device for a cast-in-place concrete wall penetrating a reserved pipe provided by the utility model comprises a sleeve, an end cover plate 3, a counter screw 41 and an annular wing plate 2; the sleeves comprise two sleeves which are coaxially arranged at intervals, the rear ends of the sleeves are embedded in the wall body 7, the front ends of the sleeves are flush with the wall surface or extend out of the wall surface, the template 6 at the wall surface is provided with a supporting hole which is matched with the outer diameter of the sleeve, the annular wing plate 2 is arranged on the sleeve and fixedly connected with the template 6, and the annular wing plate 2 is tightly attached to the template 6 to seal an annular gap between the supporting hole and the sleeve; the middle of the reserved pipe 5 is fixedly connected to a reinforced structure of the wall 7, two ends of the reserved pipe penetrate into two sleeves respectively, and the outer diameter of the reserved pipe 5 is matched with the inner diameter of the sleeve in size and supported by the sleeve; the end cover plates 3 are respectively covered at the far ends of the two sleeves, and the opposite-pulling screw rods 41 penetrate through the centers of the reserved pipes 5 and form tightening and fixing of the two end cover plates 3 through nuts 42; after the wall body 7 is poured and solidified, the end cover plate 3, the opposite-pulling screw and the sleeve are removed, and the reserved pipe 5 is reserved in the wall body 7. Further, the peripheral gap formed by dismantling the sleeve after the concrete of the wall 7 is solidified is plugged by waterproof mortar or plugging materials.
The fixing device for penetrating the reserved pipe through the cast-in-place concrete wall body is characterized in that the middle of the reserved pipe is fixedly connected to a reinforcing steel bar structure of the wall body, two ends of the reserved pipe penetrate into two sleeves respectively to be supported by the sleeves, so that the support fixing of the middle and two ends of the reserved pipe is formed, the end cover plates are respectively covered at the far ends of the two sleeves through tensioning and fixing of the pull screw rods, the reserved pipe is protected, the problems of deviation, disturbance, slurry leakage and the like of the reserved pipe are prevented, and the construction quality and the efficiency are provided.
In the specific implementation, as shown in fig. 2 to 5, the inner diameter of the annular wing plate 2 is adapted to and fixedly connected with the outer diameter of the sleeve, the annular wing plate 2 is tightly attached to the formwork 6 outside the wall surface and is detachably and fixedly connected with the formwork through a plurality of nails, and the holes 31 for installing the nails are formed in the outer side Zhou Huanbu of the annular wing plate 2. Further, the sleeve comprises a first sleeve 11, the front end of the first sleeve 11 is flush with the wall surface, and the annular wing plate 2 is fixedly arranged at the front end of the sleeve and is tightly fixed with the template 6 outside the wall surface. The sleeve comprises a second sleeve 12, the front end of the second sleeve 12 extends out of the wall surface, and the annular wing plate 2 is fixedly arranged in the middle of the sleeve and is tightly fixed with the template 6 outside the wall surface.
According to the embodiment, the annular wing plate is tightly attached to the template to seal the annular gap between the supporting hole and the sleeve, so that the problem of slurry leakage in the construction process is effectively prevented, and the supporting and fixing effects between the template and the sleeve are also enhanced.
In specific construction, the end cover plate 3 comprises, but is not limited to, a steel plate, a polymer material plate or a cement precast plate, the end cover plate 3 is a round, square or polygonal shape covering the whole sleeve port, a plurality of through holes are formed in the center of the end cover plate 3, each through hole is annularly distributed outside the center of the end cover plate 3, the split screws 41 comprise a plurality of parallel arranged, and each split screw 41 respectively penetrates through the through holes opposite to the positions of the two end cover plates 3 and is fixedly connected through nuts 42. The opposite ends of the pull screw 41 are respectively provided with end threads, nuts 42 are respectively connected to the end threads, and the end cover plate 3 is tightly supported by the adjacent nuts 42. So that nuts can be screwed down at the two sides at the same time, and the construction efficiency is improved.
Further, as shown in fig. 2 and 4, the end cover plate 3 is provided with a positioning boss matched with the inner diameter of the sleeve, or the end cover plate 3 is radially provided with radial positioning rib plates, and one end of the positioning rib plates, which is far away from the center of the end cover plate 3, is matched with the inner diameter of the sleeve. When the pipe diameter of the reserved pipe is larger, the plurality of opposite-pulling screws can improve the fastening effect, the positioning boss or the positioning rib plate can keep the accurate positioning of the end cover plate, and the dislocation of the end cover plate can be prevented.
In the construction process, the sleeve is required to be pulled out after the concrete is solidified, part of the sleeve is difficult to pull out due to the clamping and bonding effects of the concrete on the sleeve, the sleeve is easy to be stressed and deflected by adopting a manual external pulling sleeve method, the wall surface close to the sleeve is not beneficial to the protection of the wall body, as shown in fig. 6, and for this reason, the novel improved annular wing plate 2 is provided with threaded holes symmetrically in some preferred embodiments, and ejection bolts 32 are respectively arranged in each threaded hole.
After concrete pouring is completed and solidification is waited, the end cover plate is removed, nails between the annular wing plate and the template are removed, then the ejection bolts 32 are respectively screwed up, the sleeve is pulled out of the wall body, the pulling force process generated by the sleeve is large and mild, the sleeve which is tightly connected with the wall body can be pulled out, moreover, the sleeve is uniformly stressed and accurate in direction, surrounding concrete is prevented from being brought out in the pulling process, and the integrity of the wall surface is effectively protected.
The fixing device for penetrating the reserved pipe of the cast-in-place concrete wall body is described below by combining with practical embodiments, and the construction method is as follows:
the first step: paying off and positioning the position of the reserved pipe 5 according to the drawing requirements on site;
and a second step of: fixing the reserved pipe 5 on the steel bar;
and a third step of: forming holes on the template, brushing a release agent, and sealing the template 6;
fourth step: brushing a release agent, sleeving a sleeve, wherein the diameter of the sleeve is 1-2mm larger than that of the reserved pipe, the sleeve extends into the wall for about 25-50mm (taking a value according to the thickness of the reinforcing steel bar protection layer), the outer diameter of the annular wing plate 2 is about 50mm larger than the size of the opening of the template 6 (if the size of the opening of the template is larger and can be properly increased), and small holes 31 are formed in the periphery of the annular wing plate 2, so that nails and the template 6 can be conveniently fixed;
fifth step: the opposite-pulling screw rod 41 penetrates through the reserved pipe 5, the end cover plate 3 is covered, the nut 42 of the opposite-pulling screw rod 41 is screwed, the diameter of the end cover plate 3 is 10-30mm larger than that of the reserved pipe 5, a central hole is drilled in the middle, and the opposite-pulling screw rod 41 just can penetrate through; the length of the opposite-pulling screw 41 is longer than that of the reserved pipe 5, and double nuts are adopted;
sixth step: pouring concrete;
seventh step: after final setting, removing the die, and sequentially removing the end cover plate 3, the sleeve and the annular wing plate 2 for recycling, wherein the gap of the reserved pipe 5 close to the wall surface is blocked by waterproof mortar or plugging materials, so that the structure shown in figure 7 is obtained;
the fixing device for the cast-in-place concrete floor reserved pipe solves the problems of deviation, disturbance, slurry leakage and the like of the concrete wall reserved pipe, reduces unnecessary reworking and improves construction quality and construction efficiency.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. The utility model provides a fixing device of reservation pipe is worn to cast in situ concrete wall body which characterized in that:
comprises a sleeve, an end cover plate (3), a counter-pulling screw (41) and an annular wing plate (2);
the sleeve comprises two sleeves which are coaxially arranged at intervals, the rear end of each sleeve is embedded in a wall body (7), the front end of each sleeve is flush with the wall surface or extends out of the wall surface, a template (6) at the wall surface is provided with a supporting hole which is matched with the outer diameter of the sleeve, the annular wing plate (2) is arranged on the sleeve and fixedly connected with the template (6), and the annular wing plate (2) is tightly attached to the template (6) to seal an annular gap between the supporting hole and the sleeve;
the middle of the reserved pipe (5) is fixedly connected to a reinforced structure of the wall body (7), two ends of the reserved pipe respectively penetrate into the two sleeves, and the outer diameter of the reserved pipe (5) is adaptive to the inner diameter of the sleeve in size and is supported by the sleeve;
the end cover plates (3) are respectively covered at the far ends of the two sleeves, the opposite-pulling screw rods (41) penetrate through the center of the reserved pipe (5) and form tensioning and fixing of the two end cover plates (3) through nuts (42);
after the wall body (7) is poured and solidified, the end cover plate (3), the opposite-pulling screw and the sleeve are removed, and the reserved pipe (5) is reserved in the wall body (7).
2. The fixing device for a cast-in-place concrete wall through reserved pipe according to claim 1, wherein: the inside diameter of annular pterygoid lamina (2) and sheathed tube external diameter adaptation and fixed connection, annular pterygoid lamina (2) are closely and through detachable fixed connection with template (6) outside the wall, zhou Huanbu outside annular pterygoid lamina (2) have the eyelet (31) that are used for installing the nail.
3. The fixing device for a cast-in-place concrete wall through reserved pipe according to claim 1 or 2, wherein: the sleeve comprises a first sleeve (11), the front end of the first sleeve (11) is flush with the wall surface, and the annular wing plate (2) is fixedly arranged at the front end of the sleeve and is tightly fixed with the template (6) outside the wall surface.
4. The fixing device for a cast-in-place concrete wall through reserved pipe according to claim 1 or 2, wherein: the sleeve comprises a second sleeve (12), the front end of the second sleeve (12) extends out of the wall surface, and the annular wing plate (2) is fixedly arranged in the middle of the sleeve and is tightly fixed with the template (6) outside the wall surface.
5. The fixing device for a cast-in-place concrete wall through reserved pipe according to claim 1 or 2, wherein: threaded holes are symmetrically formed in the annular wing plates (2), and ejection bolts (32) are respectively arranged in the threaded holes.
6. The fixing device for a cast-in-place concrete wall through reserved pipe according to claim 1, wherein: the center position of the end cover plate (3) is provided with a plurality of through holes, each through hole is annularly distributed outside the center position of the end cover plate (3), the opposite-pulling screw rods (41) comprise a plurality of through holes which are arranged in parallel, and each opposite-pulling screw rod (41) respectively penetrates through the through holes opposite to the positions of the two end cover plates (3) and is fixedly connected through nuts (42).
7. The fixing device for a cast-in-place concrete wall through reserved pipe according to claim 1 or 6, wherein: the two ends of the opposite-pull screw rod (41) are respectively provided with end threads, nuts (42) are respectively connected to the end threads, and the end cover plate (3) is tightly propped up through the adjacent nuts (42).
8. The fixing device for a cast-in-place concrete wall through reserved pipe according to claim 7, wherein: the end cover plate (3) is provided with a positioning boss matched with the inner diameter of the sleeve, and/or the end cover plate (3) is radially provided with radial positioning rib plates, and one end of each positioning rib plate, which is far away from the center of the end cover plate (3), is matched with the inner diameter of the sleeve.
9. The fixing device for a cast-in-place concrete wall through reserved pipe according to claim 1, wherein: the end cover plate (3) comprises a steel plate, a high polymer material plate or a cement precast plate; the end cover plate (3) is round, square or polygonal and covers the whole sleeve port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322222375.XU CN220645199U (en) | 2023-08-18 | 2023-08-18 | Fixing device for penetrating reserved pipe of cast-in-place concrete wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322222375.XU CN220645199U (en) | 2023-08-18 | 2023-08-18 | Fixing device for penetrating reserved pipe of cast-in-place concrete wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220645199U true CN220645199U (en) | 2024-03-22 |
Family
ID=90289567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322222375.XU Active CN220645199U (en) | 2023-08-18 | 2023-08-18 | Fixing device for penetrating reserved pipe of cast-in-place concrete wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220645199U (en) |
-
2023
- 2023-08-18 CN CN202322222375.XU patent/CN220645199U/en active Active
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