CN223269506U - Large-span prefabricated staircase post-pouring belt formwork system - Google Patents
Large-span prefabricated staircase post-pouring belt formwork systemInfo
- Publication number
- CN223269506U CN223269506U CN202421518635.6U CN202421518635U CN223269506U CN 223269506 U CN223269506 U CN 223269506U CN 202421518635 U CN202421518635 U CN 202421518635U CN 223269506 U CN223269506 U CN 223269506U
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- precast stair
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- die assembly
- stair
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Abstract
The utility model discloses a large-span precast stair post-cast strip formwork system which comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are arranged at a precast stair seam and used for forming a post-cast strip, the upper die assembly and the lower die assembly are connected through opposite-pull screws penetrating through the upper die assembly and the lower die assembly, the precast stair is clamped and fixed at the precast stair seam, the upper die assembly comprises a stepping template arranged at a precast stair bench, the width of the stepping template is adjustable to adapt to the stepping width of the precast stair, and the large-span precast stair post-cast strip formwork system provided by the utility model solves the problems of solidification waiting, slurry leakage of the seam, uneven surface and poor apparent quality of the prior casting construction mode of the post-cast strip, reduces construction difficulty, has the advantages of simplicity and convenience in construction, reliable quality, environmental friendliness, obvious economic benefit and good application prospect.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a large-span precast stair post-cast strip formwork system.
Background
The assembled building is assembled on a construction site by utilizing building components prefabricated in a factory, and the development of the assembled building is a major innovation of a construction mode, is an important measure for promoting structural innovation and novel town development, is beneficial to saving resource and energy, reducing construction pollution, improving labor production efficiency and quality safety level, and is beneficial to promoting deep fusion of the building industry and informatization industrialization, cultivating new kinetic energy of new industry and promoting resolution of surplus productivity.
In the prior art, when constructing prefabricated stairways in schools or workshops, because the span of the prefabricated stairway is large and the integral weight exceeds the hoisting weight of a tower crane, in order to save the expensive rent of using a large hoisting tower crane, the prefabricated stairway is generally selected to be designed in a deepened mode again and divided into two blocks to be hoisted respectively and reserved with post-cast strip construction positions, and when the two prefabricated stairways are installed, post-cast strip construction is performed between the two prefabricated stairways. However, in the construction of post-cast strip, a wood template is arranged at the bottom, and a construction mode of hanging a template is adopted at the upper part, but the traditional stair hanging template is not good in controlling the slump of concrete in the concrete pouring process, and a large amount of time is wasted in the process of waiting for the concrete strength to be coagulated, meanwhile, the problem that the stair hanging template is easy to expand in the construction process, the concrete with overlarge slump cannot be molded and vibrated and then flows to the bottom completely can also occur, and the problem that the seam leakage and the template removal damage are easy to occur at the bottom of the stair after the pouring is completed due to the wood template is adopted at the bottom of the template supporting system, the problem that the stair tread is uneven can also easily occur, and a large amount of labor is required to be consumed for polishing.
Therefore, there is a need for improvements in the traditional large-span precast stair post-cast strip formwork system that can circumvent and ameliorate the above-mentioned drawbacks.
Disclosure of utility model
In view of the above, the application provides a large-span precast stair post-cast strip formwork system, which solves the problems of solidification waiting, slurry leakage at the joints, uneven surface and poor apparent quality of the prior post-cast strip casting construction, reduces the construction difficulty, and has the advantages of simple and convenient construction, reliable quality, environmental protection, obvious economic benefit and good application prospect.
The utility model provides a large-span precast stair post-cast strip formwork system which comprises an upper die assembly and a lower die assembly, wherein the upper die assembly and the lower die assembly are arranged at a precast stair seam and used for forming a post-cast strip, the upper die assembly and the lower die assembly are connected through opposite-pull screws penetrating through the upper die assembly and the lower die assembly, the precast stair is clamped and fixed at the precast stair seam, the upper die assembly comprises a stepping template arranged at a precast stair bench, and the width of the stepping template is adjustable so as to adapt to the stepping width of the precast stair.
Further, the upper die assembly comprises a first upper die plate arranged on the upper surface of the prefabricated stair upper platform and a second upper die plate arranged on the upper surface of the prefabricated stair lower platform, and the stepping die plate is arranged between the first upper die plate and the second upper die plate;
the lower die assembly comprises a first lower die plate arranged on the lower surface of the upper platform of the prefabricated stair, a second lower die plate arranged on the lower surface of the lower platform of the prefabricated stair and a third lower die plate arranged between the first lower die plate and the second lower die plate and positioned below the stepping die plate.
Further, the template of marking time includes a plurality of template units of marking time that set up on prefabricated stair marking time, the template unit of marking time is whole to be class C style of calligraphy structure and including last diaphragm, lower diaphragm and be used for connecting the diaphragm and the connection riser of diaphragm down, the diaphragm sets up on the horizontal plane that prefabricated stair marked time down, connect the riser setting on the vertical plane that prefabricated stair marked time, it is adjacent the template unit of marking time passes through the fastener and realizes both and connect the fastening behind the lower diaphragm of the template unit of marking time in top and the last diaphragm of the template unit of marking time in below.
Further, the upper cross plate and the lower cross plate are provided with strip-shaped adjusting holes in the width direction of the steps, and the strip-shaped adjusting holes are used for adjusting positions of the adjacent step template units so as to adapt to the step width of the prefabricated stairway.
Further, the tip that first cope match-plate pattern is close to prefabricated stair section of marking time passes through the fastener with the last diaphragm that is located the highest department template unit of marking time in vertical direction and is connected, the tip that the second cope match-plate pattern is close to prefabricated stair section of marking time also is C style of calligraphy structure and goes up the diaphragm and be located the lower diaphragm that the template unit of marking time in vertical direction and pass through the fastener and be connected.
Further, still include the attached type vibrator that is used for vibrating into mould concrete, first cope match-plate pattern the second cope match-plate pattern with all be provided with on the lower diaphragm of the template unit of marking time and be used for installing attached type vibrator installing support.
Further, the lower transverse plate is further provided with a grout outlet at the external corner of the prefabricated stair tread.
Further, the third lower template includes a plurality of slope setting lower template units on prefabricated stair step section bottom surface, and a plurality of lower template units is along prefabricated stair step section bottom surface's length direction evenly distributed and through fastener interconnect.
Further, the first lower template and the second lower template are identical in structure and are respectively used for supporting the lower surface of the upper platform of the prefabricated stair and the lower surface of the lower platform of the prefabricated stair, the end part, close to the step section of the prefabricated stair, of the first lower template is connected with the end part, located at the highest position, of the lower template unit in the vertical direction through a fastener, and the end part, close to the step section of the prefabricated stair, of the second lower template is connected with the end part, located at the lowest position, of the lower template unit in the vertical direction through a fastener.
Further, a supporting rod assembly is further arranged between the lower die assembly and the construction floor, and the supporting rod assembly is used for supporting the formwork supporting system.
In summary, the large-span precast stair post-cast strip formwork system has the advantages that the large-span precast stair post-cast strip formwork system can be adjusted at will according to the width of a stair tread through a tool type stair formwork, is convenient to detach after casting, can be reused, reduces cost, can enable post-cast strip concrete to be cast in place at one time, greatly reduces the time of waiting for lower concrete to reach a certain strength and then casting upper part due to poor concrete slump adjustment, is further provided with grout outlet holes at external corners of the post-cast strip to prevent edge missing angles caused by bubble space, and is further provided with an installation structure of a self-attached vibrator to ensure uniform vibration of concrete at all positions of the post-cast strip.
Drawings
The present application will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of a large-span prefabricated staircase post-cast strip formwork system;
FIG. 2 is a bottom view of the structure of the large-span prefabricated staircase post-cast strip formwork system of the present utility model;
FIG. 3 is a schematic diagram of a step template unit according to the present utility model;
FIG. 4 is a cross-sectional view of the structure of the formwork system of the large-span prefabricated staircase post-pouring belt of the present utility model;
The reference numerals illustrate a 1-prefabricated stair upper platform, a 2-prefabricated stair lower platform, a 3-prefabricated stair tread section, a 4-first upper template, a 5-second upper template, a 6-tread template unit, a 7-first lower template, an 8-second lower template, a 9-lower template unit, a 10-support rod assembly, an 11-opposite-pull screw rod, a 12-fastener, a 13-attached vibration device, a 601-upper transverse plate, a 602-lower transverse plate, a 603-connecting vertical plate, a 604-strip-shaped adjusting hole, a 605 mounting bracket and a 606-edge wrapping structure.
Detailed Description
The utility model provides a large-span precast stair post-cast strip formwork system, which comprises an upper die assembly, a lower die assembly and a support rod assembly, wherein the upper die assembly and the lower die assembly are arranged at a precast stair seam and used for forming a post-cast strip, the support rod assembly is arranged between the lower die assembly and a construction floor, the upper die assembly and the lower die assembly are connected through a counter-pulling screw 11 penetrating through the upper die assembly and the lower die assembly, the precast stair is clamped and fixed at the precast stair seam, and the support rod assembly 10 is used for supporting the formwork system;
The upper die assembly comprises a first upper die plate 4 arranged on the upper surface of the upper platform 1 of the prefabricated stair, a second upper die plate 5 arranged on the upper surface of the lower platform 2 of the prefabricated stair and a stepping die plate arranged between the first upper die plate 4 and the second upper die plate 5, and the width of the stepping die plate can be adjusted to adapt to the stepping width of the prefabricated stair;
The lower die assembly comprises a first lower die plate 7 arranged on the lower surface of the prefabricated stair upper platform 1, a second lower die plate 8 arranged on the lower surface of the prefabricated stair lower platform 2 and a third lower die plate arranged between the first lower die plate 7 and the second lower die plate 8 and positioned below the stepping die plate;
The upper die assembly and the lower die assembly can be made of aluminum materials through integral molding, and can be connected through fasteners when in use, so that the assembly is more convenient to detach and more stable to connect than the traditional wood die plate, the slurry leakage condition is not easy to occur, and meanwhile, the assembly can be reused, and the cost is reduced; the upper die assembly is mainly arranged on the upper surface of the post-pouring belt, the lower die assembly is arranged on the lower surface of the post-pouring belt, the upper die assembly and the lower die assembly are connected through a counter-pulling screw 11, and the prefabricated stairway at the left end and the right end is clamped and adjusted to be in a leveling state, so that the subsequent concrete pouring quality is ensured; the lower die assembly is provided with a support rod assembly 10 supported on an installation floor below to support the whole formwork structure and ensure the formwork strength, the upper die assembly comprises a tread template arranged on the precast stair tread section 3 to form a stair tread section at a post-cast strip during casting, the tread template can be adjusted according to the tread width dimension on the precast stair tread section 3 to obtain a tread structure with the same dimension as the tread on the precast stair tread section 3, the existing large-span precast stair post-cast strip formwork structure is improved, the tread template can be optionally adjusted according to the designed stair tread width, the post-cast strip is convenient to disassemble and can be repeatedly used for a plurality of times, the cost is reduced, the formwork system can enable the post-cast strip to be cast in place at one time during casting, the time of waiting for the lower concrete to reach a certain strength and casting the upper part due to the fact that the concrete is not good in the slump is adjusted is greatly reduced, the problems of waiting for solidification, slurry leakage, uneven surface and poor apparent quality of casting of the prior post-cast strip construction are solved, the construction difficulty is reduced, the construction is simple, the post-cast strip has the advantages of simplicity, convenience, the quality and reliability in construction, the slump and obvious economic benefit, has good application prospect.
In this embodiment, the step template includes a plurality of step template units 6 of setting on prefabricated stair step, step template unit 6 is whole to be C style of calligraphy structure and including last diaphragm 601, lower diaphragm 602 and be used for connecting the connection riser 603 of diaphragm 601 and lower diaphragm 602, lower diaphragm 602 sets up on the horizontal plane of prefabricated stair step, connect riser 603 setting on the vertical plane of prefabricated stair step, adjacent step template unit 6 passes through the fastener 12 and realizes both and connect the fastening behind the last diaphragm 602 of the lower diaphragm 602 of top step template unit and the last diaphragm 601 of the lower side step template unit, combines the drawing 1 and 3 to show, and fastener 12 is connecting bolt structure (hereinafter same), and step template has the concatenation formation of a plurality of step template unit 6 on the section of prefabricated stair step and respectively with first cope match-plate pattern 4 and second cope match-plate pattern 5 to form the whole of upper die set, wherein template unit 6 wholly is C style of calligraphy structure and including last diaphragm 601, lower diaphragm 602 and be used for connecting diaphragm 601 and lower diaphragm 602 and the connection riser 602, can be located the lower diaphragm 602 of the lower diaphragm 602 and the length setting up the prefabricated stair step template unit of the length of the joint between the horizontal plane of diaphragm 602 and the lower diaphragm 602 and can be located the adjacent diaphragm 601 of the upper side of the prefabricated stair step section of a side of the prefabricated stair step section and the length of the lower diaphragm 3.
In this embodiment, the upper cross plate 601 and the lower cross plate 602 are respectively provided with a bar-shaped adjusting hole 604 in the width direction of the tread, the bar-shaped adjusting holes 604 are used for adjusting the positions of the adjacent tread template units 6 to adapt to the tread width of the prefabricated staircase, and in order to adjust the adjacent tread template units 6 to the designed tread width, as shown in fig. 1 and 3, the upper cross plate 601 and the lower cross plate 602 are respectively provided with the bar-shaped adjusting holes 604 in the width direction of the tread, and are matched with the fasteners 12 through the bar-shaped adjusting holes to realize connection and fixation at the designed tread width.
In this embodiment, the end of the first upper template 4 near the prefabricated staircase tread section is connected with the upper cross plate 601 of the tread template unit 6 located at the highest position in the vertical direction through a fastener 12, the end of the second upper template 5 near the prefabricated staircase tread section is also in a C-shaped structure and the upper cross plate is connected with the lower cross plate 602 of the tread template unit 6 located at the lowest position in the vertical direction through a fastener 12, and as shown in fig. 1 and 4, the structure of the tread template unit 6 is affected, so that the structure of the first upper template 4 and the structure of the second upper template 5 is different, the first upper template 4 is in a flat plate structure as a whole and is connected with the upper cross plate 601 of the tread template unit 6 located at the highest position in the vertical direction through a fastener 12 at the end near the prefabricated staircase tread section, while the end of the second upper template 5 near the prefabricated staircase tread template unit 6 is in a C-shaped structure identical to the tread template unit 6 and the lower cross plate 602 located at the lowest position in the vertical direction is connected with the fastener 12.
In this embodiment, the device further includes an attached vibrator 13 for vibrating the in-mold concrete, the first upper template 4, the second upper template 5, and the lower transverse plate 602 of the step template unit 6 are all provided with attached vibrator mounting brackets 605 for mounting the attached vibrator, in order to remove the gas mixed in the concrete after the post-cast strip concrete is in the mold, and to fill and tighten the concrete in the template, and further to use the attached vibrator 13 to vibrate the in-mold concrete sufficiently and uniformly, and meanwhile, the attached vibrator mounting brackets 605 are provided on the lower transverse plates 602 of the first upper template 4, the second upper template 5, and the step template unit 6, so that the attached vibrator 13 is more convenient to mount, wherein the attached vibrator 13 is also connected with the mounting brackets 605 through the fasteners 12.
In this embodiment, the lower transverse plate 602 is further provided with a grout outlet at the external corner of the prefabricated stair tread, and the external corner of the post-cast strip is provided with a grout outlet at the external corner of the prefabricated stair tread, so as to prevent the situation that the external corner of the tread forms a bubble space which cannot be discharged in the concrete pouring process, and further cause the situation that the external corner is lack of edges and falls after the concrete is solidified.
In this embodiment, the third lower template includes a plurality of lower template units 9 obliquely disposed on the bottom surface of the prefabricated stair tread section, and a plurality of lower template units 9 are uniformly distributed along the length direction of the bottom surface of the prefabricated stair tread section and are connected with each other by fasteners 12, and as shown in fig. 2 and 4, the third lower template is formed by connecting a plurality of lower template units 9 after being obliquely disposed along the bottom surface of the prefabricated stair tread section, and is formed by splicing a plurality of lower template units 9 so as to facilitate the installation and transportation of the third lower template, and the inclination angle of the bottom surface of the prefabricated stair tread section can be adjusted according to design requirements, wherein the lower template units 9 and the tread template units 6 can also be correspondingly provided with counter-pulling screws 11 according to requirements so as to ensure the molding quality of the prefabricated stair tread section.
In this embodiment, the first lower template 7 and the second lower template 8 have the same structure and are respectively used for supporting the lower surface of the prefabricated stair upper platform 1 and the lower surface of the prefabricated stair lower platform 2, the end part of the first lower template 7, which is close to the prefabricated stair tread section, is connected with the end part of the lower template unit 9, which is located at the highest position in the vertical direction, through a fastener 12, the end part of the second lower template 8, which is close to the prefabricated stair tread section, is connected with the end part of the lower template unit 9, which is located at the lowest position in the vertical direction, through a fastener 12, and the first lower template 7 and the second lower template 8 are templates with the same structure and are respectively connected with the two end parts of the third lower template through fasteners 12, as shown in fig. 2 and 4.
In this embodiment, the upper and lower mold assemblies are provided with the edge-covering structures 606 for reinforcing the strength of the mold plates, and the reinforcing ribs are further disposed between the edge-covering structures 606 and the bottom surface of the mold plates, and in combination with the illustration in fig. 1 to 3, the edge-covering structures are disposed at the peripheral edges of the first lower mold plate 7, the second lower mold plate 8, the lower mold plate unit 9, the first upper mold plate 4, the second upper mold plate 5 and the step mold plate unit 6, and the reinforcing ribs are disposed between the edge-covering structures and the bottom of the mold plates to ensure the strength of the mold plates, and meanwhile, for the first lower mold plate 7, the second lower mold plate 8 and the lower mold plate unit 9, the connection between the adjacent mold plates can be realized by the cooperation of the edge-covering structures and the fastening members 12.
In this embodiment, a construction method of a large-span precast stair post-cast strip formwork system is also provided, which is applicable to the large-span precast stair post-cast strip formwork system, and includes the following steps:
S1, hoisting prefabricated stairways to installation positions, installing the prefabricated stairways, and reserving a post-pouring belt construction gap between two adjacent prefabricated stairways;
s2, assembling a lower die assembly and hoisting the lower die assembly to the joint of the prefabricated staircase, and erecting a support rod assembly 10 below the lower die assembly for supporting;
S3, installing an upper die assembly at the joint of the prefabricated staircase, wherein a first upper die plate 4 and a second upper die plate 5 which are positioned on the upper platform and the lower platform of the prefabricated staircase are installed firstly, and then a stepping die plate unit 6 is installed between the first upper die plate 4 and the second upper die plate 5 according to the preset stepping width, so that the post-cast strip supporting die at the joint of the prefabricated staircase is finally formed.
S4, checking the formwork strength and formwork quality of the formwork structure, pouring concrete from the post-pouring belt of the upper platform of the prefabricated staircase after the formwork structure is formed, enabling the concrete to flow to the upper platform of the prefabricated staircase, and uniformly vibrating the concrete in the post-pouring belt template by using the attached vibration device 13 after pouring is completed.
S5, removing the mold after the concrete in the post-cast strip template is solidified, checking the molding quality of the post-cast strip, and polishing according to the molding quality.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (9)
1. The large-span precast stair post-cast strip formwork system is characterized by comprising an upper die assembly and a lower die assembly which are arranged at a precast stair seam and used for forming a post-cast strip, wherein the upper die assembly and the lower die assembly are connected through a split screw rod penetrating through the upper die assembly and the lower die assembly, the precast stair is clamped and fixed at the precast stair seam, the upper die assembly comprises a stepping template arranged at a precast stair bench, and the width of the stepping template is adjustable to adapt to the stepping width of the precast stair;
The upper die assembly comprises a first upper die plate arranged on the upper surface of the upper platform of the prefabricated stair and a second upper die plate arranged on the upper surface of the lower platform of the prefabricated stair, and the stepping die plate is arranged between the first upper die plate and the second upper die plate;
the lower die assembly comprises a first lower die plate arranged on the lower surface of the upper platform of the prefabricated stair, a second lower die plate arranged on the lower surface of the lower platform of the prefabricated stair and a third lower die plate arranged between the first lower die plate and the second lower die plate and positioned below the stepping die plate.
2. The large-span precast stair post-cast strip formwork system of claim 1, wherein the step formwork comprises a plurality of step formwork units arranged on precast stair steps, the step formwork units are of a C-shaped structure as a whole and comprise an upper transverse plate, a lower transverse plate and a connecting vertical plate used for connecting the upper transverse plate and the lower transverse plate, the lower transverse plate is arranged on a horizontal plane of precast stair steps, the connecting vertical plate is arranged on a vertical plane of precast stair steps, and adjacent step formwork units are connected and fastened through fasteners after penetrating through the lower transverse plate of the upper step formwork units and the upper transverse plate of the lower step formwork units.
3. The large-span precast stair post-cast strip formwork system of claim 2, wherein the upper transverse plate and the lower transverse plate are provided with strip-shaped adjusting holes in the width direction of the tread, and the strip-shaped adjusting holes are used for adjusting positions of adjacent tread template units so as to adapt to tread width of the precast stair.
4. The large-span prefabricated staircase post-cast strip formwork system of claim 2, wherein the end part of the first upper template, which is close to the prefabricated staircase tread section, is connected with an upper transverse plate of a tread template unit positioned at the highest position in the vertical direction through a fastener, the end part of the second upper template, which is close to the prefabricated staircase tread section, is also in a C-shaped structure, and the upper transverse plate is connected with a lower transverse plate of a tread template unit positioned at the lowest position in the vertical direction through a fastener.
5. The large-span precast stair post-cast strip formwork system of claim 2, further comprising an attached vibration device for vibrating the in-mold concrete, wherein the first upper template, the second upper template and the lower transverse plates of the tread template units are provided with mounting brackets for mounting the attached vibration device.
6. The large-span precast stair post-cast strip formwork system of claim 2, wherein the lower cross plate is further provided with grout outlets at external corners of the precast stair steps.
7. The large-span precast stair post-cast strip formwork system of claim 1, wherein the third lower formwork comprises a plurality of lower formwork units which are obliquely arranged on the bottom surface of the precast stair tread section, and the plurality of lower formwork units are uniformly distributed along the length direction of the bottom surface of the precast stair tread section and are connected with each other through fasteners.
8. The large-span precast stair post-cast strip formwork system of claim 7, wherein the first lower template and the second lower template are identical in structure and are respectively used for supporting the lower surface of the precast stair upper platform and the lower surface of the precast stair lower platform, the end, close to the precast stair tread section, of the first lower template is connected with the end, located at the highest position in the vertical direction, of the lower template unit through a fastener, and the end, close to the precast stair tread section, of the second lower template is connected with the end, located at the lowest position in the vertical direction, of the lower template unit through a fastener.
9. The large-span precast stair post-cast strip formwork system of claim 1, wherein a support rod assembly is further arranged between the lower formwork assembly and the construction floor, and the support rod assembly is used for supporting the formwork system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421518635.6U CN223269506U (en) | 2024-06-30 | 2024-06-30 | Large-span prefabricated staircase post-pouring belt formwork system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421518635.6U CN223269506U (en) | 2024-06-30 | 2024-06-30 | Large-span prefabricated staircase post-pouring belt formwork system |
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| Publication Number | Publication Date |
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| CN223269506U true CN223269506U (en) | 2025-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421518635.6U Active CN223269506U (en) | 2024-06-30 | 2024-06-30 | Large-span prefabricated staircase post-pouring belt formwork system |
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| Country | Link |
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| CN (1) | CN223269506U (en) |
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- 2024-06-30 CN CN202421518635.6U patent/CN223269506U/en active Active
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