CN219801778U - Vertical bridge pre-buried device of high-rise building and special internal support device thereof - Google Patents
Vertical bridge pre-buried device of high-rise building and special internal support device thereof Download PDFInfo
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- CN219801778U CN219801778U CN202321218269.8U CN202321218269U CN219801778U CN 219801778 U CN219801778 U CN 219801778U CN 202321218269 U CN202321218269 U CN 202321218269U CN 219801778 U CN219801778 U CN 219801778U
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- 239000004567 concrete Substances 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims description 13
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 7
- 230000000903 blocking effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012945 sealing adhesive Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The high-rise building vertical bridge embedding device comprises a direct-buried bridge and two bridges respectively butted at the upper end and the lower end of the direct-buried bridge; the direct-buried bridge comprises a square-tube-shaped finished bridge embedded section, at least one pair of connecting clamping grooves which are oppositely arranged and longitudinally extend are arranged on the inner wall of the direct-buried bridge, and a plurality of reserved electric distribution pipe holes which are transversely arranged are formed in the side wall of the direct-buried bridge; the bridge comprises a bridge main body and bridge connecting pieces fixedly connected to the inner wall of the bridge main body through fastening members, and the number and the positions of the bridge connecting pieces are consistent with those of the connecting clamping grooves; one ends of the bridge connecting pieces are respectively and fixedly connected to two opposite sides of the inner wall of the bridge main body, and the other ends extend out of the bridge main body to be matched and connected with the connecting clamping grooves. The utility model can be directly embedded into the concrete structure plate, does not generate reserved holes, does not need to carry out fireproof blocking, and has better and reliable fireproof effect; deformation of the bridge embedded device during pouring can be prevented, and construction accuracy and yield are improved.
Description
Technical Field
The utility model relates to a bridge mounting structure, in particular to a vertical bridge pre-burying device for a high-rise building and a special internal supporting device thereof, and belongs to the technical field of building electromechanical mounting.
Background
In the construction process of building engineering, a square hole is reserved in advance when a cable bridge passes through a floor slab in the installation process, the bridge passes through the reserved hole for installation, and the reserved hole is required to be provided with adjustment allowance for bridge installation and installation space for covering a bridge cover plate, so that the length and the width of the square hole are usually 5-10cm larger than those of the bridge, and a gap between the bridge and the square hole is required to be filled with a fireproof bag, fireproof mud and a fireproof plate.
At present, the bridge reserved hole is generally larger, and after a fireproof bag and a fireproof plate are installed in the later fireproof blocking process, the bridge reserved hole is very easy to damage in cross construction with other professions due to material reasons, and gaps exist after the fireproof blocking, so that the fireproof effect can be influenced. In a narrow construction space, the defects of low working efficiency, inconvenient construction and poor construction effect exist.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the embedded device of the vertical bridge of the high-rise building and the special internal supporting device thereof, which can be directly embedded into the concrete structure plate without generating a reserved hole, do not need to carry out fireproof blocking, and have better and reliable fireproof effect; deformation of the bridge embedded device during pouring can be prevented, and construction accuracy and yield are improved.
The utility model solves the technical problems by adopting a technical scheme that:
a vertical bridge pre-burying device for a high-rise building comprises a direct-buried bridge and two bridges respectively butted at the upper end and the lower end of the direct-buried bridge;
the direct-buried bridge comprises a square-tube-shaped finished bridge embedded section, wherein at least one pair of connecting clamping grooves which are oppositely arranged and longitudinally extend are formed in the inner wall of the square-tube-shaped finished bridge embedded section, and a plurality of reserved electric distribution pipe holes which are transversely arranged are formed in the side wall of the square-tube-shaped finished bridge embedded section;
the bridge comprises a bridge main body and bridge connecting pieces fixedly connected to the inner wall of the bridge main body through fastening members, and the number and the positions of the bridge connecting pieces are consistent with those of the connecting clamping grooves; one ends of the bridge connecting pieces are respectively and fixedly connected to two opposite sides of the inner wall of the bridge main body, and the other ends extend out of the bridge main body to be matched and connected with the connecting clamping grooves.
Optionally, the embedded section of the square tube-shaped finished bridge comprises four longitudinally extending plate bodies, and the four plate bodies are enclosed to form a rectangular frame and form a bridge mounting hole integrated with concrete.
Optionally, the connection clamping groove comprises two parallel L-shaped clamping plates which are arranged at intervals.
With the help of the vertical bridge pre-burying device for the high-rise building, the bridge is mounted by utilizing the direct-buried bridge which is connected with the embedded concrete structure plate, the bridge can be mounted by one-step molding, no reserved hole is needed, the labor, material and working hour losses caused by working procedures such as removing the mould when the reserved hole is manufactured by adopting the wood plate mould in the past are reduced, the concrete can be separated by the direct-buried bridge, the built mounting hole has an inner wall with a more regular shape, the construction quality is better, the scratch of wires or cables on the inner wall of the hole during the follow-up threading can be avoided, the hole opening and the hanging mould do not need to be additionally manually picked after the concrete is solidified, the labor intensity is reduced, and the construction efficiency is improved; the reinforced concrete is arranged around the directly buried bridge frame, fireproof blocking is not needed, and the fireproof effect is better and reliable. The bridge frame is installed by adopting the embedded device, the construction process is simpler and more convenient, and the construction progress is faster.
The other technical scheme adopted for solving the technical problems is as follows:
the inner supporting device special for the vertical bridge pre-burying device of the high-rise building comprises a central upright post and a plurality of adjustable jacking brackets fixedly connected around the central upright post in the radial direction, wherein two ends of the central upright post are fixedly connected between a pouring partition plate and a civil engineering floor template in a detachable mode, and meanwhile the pouring partition plate is arranged in a bridge mounting hole and used for sealing the bridge mounting hole; the free end of the adjustable jacking is closely attached to the inner wall of the direct-buried bridge.
Optionally, the center upright post is detachably connected below the pouring partition plate through an adjustable module, the adjustable module comprises a harness cord screw, and a fixed limit nut, a manual rotating handle, a mountain-shaped clamp and a movable limit nut which are sequentially arranged on the harness cord screw from top to bottom, wherein the fixed limit nut and the manual rotating handle are fixedly connected on the harness cord screw, the mountain-shaped clamp and the movable limit nut are spirally arranged on the harness cord screw, and the pouring partition plate is arranged between the mountain-shaped clamp and the movable limit nut and is in threaded connection with the harness cord screw; the inner end of the harness cord screw is fixedly connected to the central upright post.
Optionally, the center stand is equipped with center through-hole and is connected with the fixation nut of coaxial arrangement in the bottom fixedly connected with of center through-hole, the logical silk screw rod runs through in center through-hole and is connected with fixation nut cooperation.
Optionally, the bottom fixedly connected with fork type connecting plate of center stand, the tip of fork type connecting plate is equipped with the pilot hole, and the department passes through self-tapping screw and civil engineering floor template fixed connection at this pilot hole.
Optionally, the adjustable jacking includes that one end fixed connection is in the stay tube on center stand surface and spiral install in the stay bar of stay tube other end, the tip of stay bar is equipped with the jacking seat of laminating with the inner wall of direct-burried crane span structure.
Optionally, the stay bar is the screw rod, the stay tube comprises stand pipe and fixed connection at the nut of stand pipe port, and the screw rod inserts the stand pipe and realizes axial flexible regulation with the nut cooperation.
Optionally, the whole shape of top bracket is bowl type, and bowl type top bracket's tip fixed connection is on the screw rod, and its big end is hugged closely directly buries the crane span structure inner wall through annular terminal surface.
The special internal supporting device is used for limiting the displacement of the directly buried bridge of the vertical bridge pre-buried device of the high-rise building in the concrete pouring process, solves the problem of bridge deformation caused by vibrating pouring, overlarge external pressure and the like in the direct buried process of the bridge, and has low device cost and can be reused. In addition, by using the inner supporting device, the directly buried bridge frame does not need to be subjected to filler and sealing adhesive tape treatment.
Drawings
The utility model will be further described with reference to the drawings and examples.
Fig. 1 is an exploded perspective view of a vertical bridge pre-burying device for a high-rise building according to an embodiment of the present utility model.
Fig. 2 is a schematic front exploded view of a vertical bridge pre-burying device for a high-rise building according to an embodiment of the present utility model.
Fig. 3 is a schematic side view exploded view of a vertical bridge pre-burying device for a high-rise building according to an embodiment of the present utility model.
Fig. 4 is a schematic perspective view of a directly buried bridge in a vertical bridge embedding device for a high-rise building according to an embodiment of the present utility model.
Fig. 5 is a schematic top view of a directly buried bridge in a vertical bridge embedding device for a high-rise building according to an embodiment of the present utility model.
Fig. 6 is a schematic perspective view of a bridge in a vertical bridge embedding device for a high-rise building according to an embodiment of the present utility model.
Fig. 7 is an exploded view of an inner support device in a vertical direction in a vertical bridge pre-burying device for a high-rise building according to an embodiment of the present utility model.
Fig. 8 is a top view of an inner support device installed in a directly buried bridge in a vertical bridge pre-burying device for a high-rise building according to an embodiment of the present utility model.
Fig. 9 is a schematic structural view of an adjustable module in a vertical bridge pre-burying device for a high-rise building according to an embodiment of the present utility model.
The meaning of the reference signs in the figures indicates:
10-embedding a device; 11-a direct-buried bridge; 111-embedding a section of a square cylinder-shaped finished bridge; 111-1-plate body; 1111-a connection card slot; 1111-1-L clamp; 1112-reserving electrical piping holes; 12-bridge frame; 121-a bridge body; 1211-a fastening member; 1212-bridge connection pads;
20-an inner support means; 21-a central upright; 211-fixing the nut; 212-fork-shaped connecting plates; 212-1-assembly holes; 22-adjustable jacking; 221-supporting tube; 222-stay bar; 2221-guide tube; 2222-nut; 223-top bracket; 23-an adjustable module; 231-a harness cord screw; 232-fixing a limit nut; 233-manual rotation of the handle; 234-mountain card; 235-a movable limit nut;
30-pouring a partition board;
40-civil engineering floor template.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
Fig. 1 to 9 show a schematic structural view of a preferred embodiment of the present utility model, in which a vertical bridge pre-burying device 10 for a high-rise building comprises a directly buried bridge 11 and two bridges 12 respectively butted to the upper and lower ends of the directly buried bridge 11;
the directly buried bridge 11 comprises a square-tube-shaped finished bridge embedded section 111, wherein at least one pair of connecting clamping grooves 1111 which are oppositely arranged and longitudinally extend are arranged on the inner wall of the square-tube-shaped finished bridge embedded section 111, and a plurality of reserved electric piping holes 1112 which are transversely arranged are formed in the side wall of the square-tube-shaped finished bridge embedded section 111;
the bridge comprises a bridge main body 121 and bridge connecting pieces 1212 fixedly connected to the inner wall of the bridge main body 121 through fastening members 1211, wherein the number and positions of the bridge connecting pieces 1212 are consistent with those of the connecting clamping grooves 1111; one end of each of the pair of bridge connecting pieces 1212 is fixedly connected to opposite sides of the inner wall of the bridge body 121, and the other end extends out of the bridge body 121 to be connected to the connecting slot 1111 in a matching manner.
The embedded joint 111 of the square tube-shaped finished bridge frame is not required to be removed after concrete is poured, and is integrated with the concrete to be used as a bridge frame installation hole, and the bridge frame installation hole in the direct-buried bridge frame 11 form is regular in inner wall shape and good in construction quality. Specifically, the bridge connection is completed through the grafting of the connection clamping groove 1111 and the bridge connection sheet 1212, the locking nut is installed through the reserved electric piping hole 1112 on the directly buried bridge 11, and then the locking nut is quickly connected with the electric piping in the floor plate surface, so that a transition wire box and secondary construction are not needed to be embedded, and the wires are not easy to scratch during threading.
In a further alternative implementation manner of this embodiment, the pre-embedded section 111 of the square-cylindrical finished bridge comprises four longitudinally extending plates 111-1, and the four plates 111-1 enclose a bridge mounting hole forming a rectangular frame and integrated with concrete.
The bridge frame installation construction is carried out by adopting the bridge frame installation holes formed by the four plate bodies 111-1 at one time, so that the labor, material and working hour losses caused by working procedures such as removing a mould when a reserved hole is manufactured by adopting a wood plate mould in the past are reduced, concrete can be separated by the embedded section 111 of the square cylinder-shaped finished bridge frame, the hole is provided with an inner wall with a more regular shape, the construction quality is better, the scratch of wires or cables on the inner wall of the hole during the follow-up threading can be avoided, the hole and the hanging mould do not need to be additionally manually removed after the concrete is solidified, the labor intensity is reduced, and the construction efficiency is improved.
In a further alternative implementation manner of this embodiment, the connection card slot 1111 includes two parallel L-shaped cards 1111-1 arranged at intervals. When in use, the outer ends of the bridge connecting sheets 1212 are inserted into the L-shaped clamping plates 1111-1 and the space between the two L-shaped clamping plates 1111-1, thereby not only playing a guiding role in the butt joint process, but also effectively completing the connection of the two.
The other technical scheme adopted for solving the technical problems is as follows:
the inner supporting device 20 special for the vertical bridge pre-burying device 10 of the high-rise building comprises a central upright post 21 and a plurality of adjustable jacking supports 22 fixedly connected around the central upright post 21 in the radial direction, wherein two ends of the central upright post 21 are fixedly connected between a pouring partition plate and a civil engineering floor template 40 in a detachable mode, and meanwhile the pouring partition plate is arranged in a bridge mounting hole and used for sealing the bridge mounting hole; the free end of the adjustable jacking 22 is closely attached to the inner wall of the direct-buried bridge 11.
The two ends of the inner supporting device 20 are closely attached to the inner wall of the directly buried bridge 11, the inner supporting device is used as an inner liner in the directly buried bridge 11 to support the plate 111-1, can limit the displacement of the directly buried bridge 11 in the concrete pouring process, can prevent the deformation of the directly buried bridge 11 during pouring, improves the construction precision and the yield, and by using the inner supporting device 20, the filling material and the sealing adhesive tape treatment are not needed in the embedded section 111 of the square tube-shaped finished bridge, the device cost is low, and the device can be reused.
In a further alternative implementation manner of the present embodiment, the center pillar 21 is detachably connected below the pouring partition plate 30 through the adjustable module 23, the adjustable module 23 includes a wire passing screw 231, and a fixed limit nut 232, a manual rotating handle 233, a mountain-shaped card 234 and a movable limit nut 235 which are sequentially disposed on the wire passing screw 231 from top to bottom, the fixed limit nut 232 and the manual rotating handle 233 are fixedly connected on the wire passing screw 231, the mountain-shaped card 234 and the movable limit nut screw 235 are mounted on the wire passing screw 231, and the pouring partition plate 30 is disposed between the mountain-shaped card 234 and the movable limit nut 235 and is in threaded connection with the wire passing screw 231; the inner end of the through-wire screw 231 is fixedly connected to the central upright 21.
In a further alternative implementation manner of this embodiment, the central upright 21 is provided with a central through hole, and a fixing nut 211 coaxially arranged is fixedly connected to the bottom end of the central through hole, and the through-wire screw 231 penetrates through the central through hole and is in fit connection with the fixing nut 211.
In a further alternative implementation manner of this embodiment, a fork-shaped connecting plate 212 is fixedly connected to the bottom of the central upright 21, and an assembly hole 212-1 is formed at the end of the fork-shaped connecting plate 212, and the assembly hole 212-1 is fixedly connected to the civil engineering floor slab template 40 through a self-tapping screw.
In a further alternative implementation manner of this embodiment, the adjustable jacking 22 includes a supporting tube 221 with one end fixedly connected to the surface of the central upright 21, and a supporting rod 222 spirally installed at the other end of the supporting tube 221, where a jacking seat 223 attached to the inner wall of the directly buried bridge 11 is disposed at the end of the supporting rod 222.
The adjustable jacking 22 is supported between the central upright post 21 and the inner wall of the directly buried bridge 11, and can adjust the supporting strength, in specific implementation, the distance between the central upright post 21 and the inner wall of the directly buried bridge 11 is adjusted by using the spiral cooperation of the supporting rod 222 and the supporting tube 221, so as to achieve the effect of compacting or loosening the jacking seat 223 on the inner wall of the directly buried bridge 11.
In a further alternative implementation manner of the present embodiment, the stay 222 is a screw, the stay 221 is composed of a guide tube 2221 and a nut 2222 fixedly connected to a port of the guide tube 2221, and the screw is inserted into the guide tube 2221 and cooperates with the nut 2222 to implement axial telescopic adjustment.
In a further alternative embodiment of the present embodiment, the top bracket 223 has a bowl shape, the small end of the bowl-shaped top bracket 223 is fixedly connected to the screw, and the large end of the small end is closely attached to the inner wall of the directly-buried bridge 11 through the annular end surface. The hollow bowl-shaped top bracket 223 is designed to increase the force strength and stability.
The bridge construction method realized based on the vertical bridge pre-burying device 10 and the special internal supporting device 20 of the high-rise building of the embodiment is as follows: the method comprises the steps of determining the size of the whole bridge, customizing the direct-buried bridge 11, manufacturing an inner supporting device 20, fixing the direct-buried bridge 11 by using the inner supporting device 20, feeding electric pipes into the direct-buried bridge 11, pouring concrete, installing the bridge 12 and installing wires and cables in the whole bridge. The construction method is completed in one time, is convenient to install, high in construction speed and better in construction quality, and the problems that the existing construction scheme is inconvenient to operate, low in working efficiency, poor in construction effect and the like are effectively solved without additional form removal after concrete is poured.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, but any simple modification and equivalent variation of the above embodiment according to the technical spirit of the present utility model falls within the scope of the present utility model.
Claims (10)
1. A high-rise building vertical bridge pre-buried device is characterized in that: the device comprises a direct-buried bridge frame and two bridge frames which are respectively butted at the upper end and the lower end of the direct-buried bridge frame;
the direct-buried bridge comprises a square-tube-shaped finished bridge embedded section, wherein at least one pair of connecting clamping grooves which are oppositely arranged and longitudinally extend are formed in the inner wall of the square-tube-shaped finished bridge embedded section, and a plurality of reserved electric distribution pipe holes which are transversely arranged are formed in the side wall of the square-tube-shaped finished bridge embedded section;
the bridge comprises a bridge main body and bridge connecting pieces fixedly connected to the inner wall of the bridge main body through fastening members, and the number and the positions of the bridge connecting pieces are consistent with those of the connecting clamping grooves; one ends of the bridge connecting pieces are respectively and fixedly connected to two opposite sides of the inner wall of the bridge main body, and the other ends extend out of the bridge main body to be matched and connected with the connecting clamping grooves.
2. The pre-burying device for a vertical bridge of a high-rise building according to claim 1, wherein the pre-burying device is characterized in that: the embedded section of the square cylinder-shaped finished bridge comprises four longitudinally extending plate bodies, and the four plate bodies are enclosed to form a rectangular frame and form a bridge mounting hole with concrete.
3. The pre-burying device for a vertical bridge of a high-rise building according to claim 2, wherein: the connecting clamping groove comprises two L-shaped clamping plates which are arranged in parallel at intervals.
4. An internal supporting device special for the embedded device of the vertical bridge of the high-rise building according to claim 1, 2 or 3, which is characterized in that: the system comprises a central upright post and a plurality of adjustable jacking brackets fixedly connected to the periphery of the central upright post in the radial direction, wherein two ends of the central upright post are fixedly connected between a pouring partition plate and a civil engineering floor slab template in a detachable mode, and meanwhile the pouring partition plate is arranged in a bridge mounting hole and used for sealing the bridge mounting hole; the free end of the adjustable jacking is closely attached to the inner wall of the direct-buried bridge.
5. The internal support device special for the pre-burying device of the vertical bridge of the high-rise building according to claim 4, wherein the internal support device is characterized in that: the center upright post is detachably connected below the pouring partition plate through an adjustable module, the adjustable module comprises a wire passing screw rod, and a fixed limit nut, a manual rotating handle, a mountain-shaped clamp and a movable limit nut which are sequentially arranged on the wire passing screw rod from top to bottom, the fixed limit nut and the manual rotating handle are fixedly connected on the wire passing screw rod, the mountain-shaped clamp and the movable limit nut are spirally arranged on the wire passing screw rod, and the pouring partition plate is arranged between the mountain-shaped clamp and the movable limit nut and is in threaded connection with the wire passing screw rod; the inner end of the harness cord screw is fixedly connected to the central upright post.
6. The internal support device special for the pre-burying device of the vertical bridge of the high-rise building according to claim 5, wherein the internal support device is characterized in that: the central upright post is provided with a central through hole, the bottom end of the central through hole is fixedly connected with a fixing nut which is coaxially arranged, and the harness cord screw rod penetrates through the central through hole and is connected with the fixing nut in a matched mode.
7. The internal support device special for the pre-burying device of the vertical bridge of the high-rise building according to claim 6, wherein the internal support device is characterized in that: the bottom fixedly connected with fork type connecting plate of center stand, the tip of fork type connecting plate is equipped with the pilot hole, and this pilot hole department links to each other with civil engineering floor template is fixed through self-tapping screw.
8. The internal support device special for the pre-burying device of the vertical bridge of the high-rise building according to claim 7, wherein the internal support device is characterized in that: the adjustable jacking comprises a supporting pipe with one end fixedly connected to the surface of the central upright post and a supporting rod spirally installed at the other end of the supporting pipe, and a jacking seat attached to the inner wall of the direct-buried bridge frame is arranged at the end part of the supporting rod.
9. The internal support device special for the pre-burying device of the vertical bridge of the high-rise building according to claim 8, wherein the internal support device is characterized in that: the stay bar is a screw rod, the supporting tube consists of a guide tube and a nut fixedly connected to the port of the guide tube, and the screw rod is inserted into the guide tube and matched with the nut to realize axial telescopic adjustment.
10. The internal support device special for the pre-burying device of the vertical bridge of the high-rise building according to claim 9, wherein the internal support device is characterized in that: the whole shape of the top bracket is bowl-shaped, the small end of the bowl-shaped top bracket is fixedly connected to the screw rod, and the large end of the bowl-shaped top bracket is tightly attached to the inner wall of the directly-buried bridge through the annular end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321218269.8U CN219801778U (en) | 2023-05-19 | 2023-05-19 | Vertical bridge pre-buried device of high-rise building and special internal support device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321218269.8U CN219801778U (en) | 2023-05-19 | 2023-05-19 | Vertical bridge pre-buried device of high-rise building and special internal support device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219801778U true CN219801778U (en) | 2023-10-03 |
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ID=88179911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321218269.8U Active CN219801778U (en) | 2023-05-19 | 2023-05-19 | Vertical bridge pre-buried device of high-rise building and special internal support device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219801778U (en) |
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2023
- 2023-05-19 CN CN202321218269.8U patent/CN219801778U/en active Active
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