Stair template device

Abstract

The utility model relates to a stair formwork device. The stair formwork device structurally comprises a formwork assembly and a formwork opposite-pulling fastener. The formwork assembly comprises a stair flight lower formwork, two side edge formworks arranged on the two sides of the stair flight lower formwork and a stair flight upper formwork arranged between the two side edge formworks. The stair flight upper template comprises a plurality of tread templates and kicking surface templates which are alternately arranged, and vibrating holes and exhaust holes are formed in the tread templates; and the template opposite-pull fastening pieces comprise side template opposite-pull fastening pieces and ladder section upper template opposite-pull fastening pieces. By means of the formwork opposite-pulling fastener, displacement and deformation of the formwork in the concrete pouring process are effectively prevented, the dimensional accuracy of stair steps and the stability of the overall structure are guaranteed, the requirement for chiseling and repairing in the later period is reduced, and therefore the overall construction quality of stairs is improved.

Description

Technical Field

[0001] The utility model relates to a template for concrete construction, in particular to a staircase template device. Background Art

[0002] As an indispensable vertical transportation facility in a building, the design and construction quality of stairs are directly related to the overall performance, safety and aesthetics of the building. With the continuous advancement of construction technology and the increasing requirements of people for living environment, the construction quality of stairs has received more and more attention.

[0003] In traditional staircase construction, there are many construction methods, such as prefabricated stairs, assembled stairs, etc., but these methods often have disadvantages such as weak joints, poor integrity, and long construction period. In contrast, cast-in-place stairs have gradually become the mainstream method of staircase construction due to their high stability, strong integrity, and flexible construction.

[0004] In the existing stair formwork construction, semi-enclosed formwork is generally used, and concrete pouring relies only on the riser formwork. In addition, the existing stair formwork fixing device has poor fixation, and the formwork is prone to displacement or deformation during the pouring process. It is not only difficult to ensure the precision control during the pouring process, but also often leads to a rough appearance of the finished staircase, which greatly reduces the aesthetics. In order to make up for these defects, the construction team often has to carry out tedious chiseling and repair work, and rework the parts that do not meet the requirements. This process is not only time-consuming and labor-intensive, but also greatly wastes human, material and financial resources. Utility Model Content

[0005] The utility model aims to provide a stair formwork device to solve the problem that the existing stair formwork adopts semi-closed formwork casting and the fixation of the formwork fixing device is poor, resulting in poor casting accuracy.

[0006] The utility model is implemented as follows: a stair formwork device, whose structure includes a formwork assembly and a formwork tension fastener; the formwork assembly includes a stair lower formwork, two side formworks arranged on both sides of the stair lower formwork, and a stair upper formwork arranged between the two side formworks; the stair upper formwork includes a plurality of tread formworks and riser formworks arranged alternately, and a vibration hole and an exhaust hole are opened on the tread formwork; the formwork tension fasteners include side formwork tension fasteners and stair upper formwork tension fasteners.

[0007] Furthermore, the side formwork tensioning fasteners include two groups of short tubes, two long screws, and clips and nuts sleeved near the two ends of the long screws.

[0008] Furthermore, the tensioning fasteners of the template on the ladder section include two groups of middle tubes, two groups of long tubes, four short screws, and clips and nuts sleeved near the two ends of the short screws.

[0009] Furthermore, the two groups of middle tubes are arranged in parallel near the upper and lower ends of the lower side of the stair section lower template, and the two groups of long tubes 13 are arranged in parallel near the left and right ends of the upper side of the stair section upper template.

[0010] Furthermore, support rods are provided on the lower side of the step lower formwork and the outer side of the side formwork.

[0011] Furthermore, the support rod on the lower side of the lower template of the ladder section is perpendicular to the middle tube.

[0012] Furthermore, both the step lower template and the tread template are provided with through holes for the short screw to pass through, and sleeves are passed through the through holes, and the short screw is passed through the sleeves.

[0013] Furthermore, a support rod is provided at the joint between the lower end of the riser template and the tread template.

[0014] Furthermore, an angle plate is provided at the joint between the upper end of the riser template and the tread template.

[0015] The utility model effectively prevents displacement and deformation of the template during concrete pouring by using the template tension fasteners, ensures the dimensional accuracy of the stair treads and the stability of the overall structure, reduces the need for later chiseling and repairing, and thus improves the overall construction quality of the stairs. The utility model adds a tread template, and the closed template better protects the concrete, ensuring that the surface of the cast staircase is smoother and the lines are smoother, thereby improving the aesthetics of the stairs. The template tension fasteners of the utility model can be adjusted according to the specific size and design requirements of the stairs, have good flexibility and adaptability, and are suitable for the construction of stairs of different types and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 yes Figure 1 Top view of the .

[0018] Figure 3 yes Figure 1 Bottom view of .

[0019] In the figure: 1. lower formwork of the stair section, 2. side formwork, 3. tread formwork, 4. support rod, 5. formwork tension fasteners, 6. angle plate, 7. vibrating hole, 8. exhaust hole, 9. short pipe, 10. long screw, 11. clip, 12. middle pipe, 13. long pipe, 14. short screw. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 3 As shown, the utility model includes a template assembly and a template tensioning fastener 5 for reinforcing the template assembly.

[0021] The template assembly includes a lower template 1 of the stair segment, two side templates 2 arranged on the left and right sides of the lower template 1, and an upper template of the stair segment arranged between the two side templates 2. The upper template of the stair segment includes a plurality of tread templates 3 and riser templates arranged alternately. The tread templates 3 are arranged horizontally, and the riser templates are arranged vertically.

[0022] A vibration hole 7 with a diameter of 200 mm is provided in the middle of the tread template 3 for vibrating after pouring concrete. In this embodiment, a vibration hole 7 is provided on the tread template 3 in the middle of the stair section. A suitable number of vibration holes 7 can also be provided at suitable positions on the tread template according to the size of the stairs. An exhaust hole 8 with a diameter of 50 mm is also provided on the tread template 3. In this embodiment, two exhaust holes 8 with a diameter of 50 mm are provided for each tread template, that is, after an exhaust hole is provided on a tread template, no exhaust hole is provided on the tread template adjacent to it. Exhaust holes can be reasonably provided on the tread template 3 according to the size of concrete or stairs.

[0023] The template tension fasteners 5 include side template tension fasteners and stair upper template tension fasteners. The side template tension fasteners are used to fix and support the outer sides of the two side templates 2, and the stair upper template tension fasteners are used to reinforce the stair upper template.

[0024] The side formwork tension fasteners include two groups of short tubes 9, two long screws 10, clips 11 sleeved near the two ends of the long screws 10, and nuts. The two groups of short tubes are respectively located on the outside of the two side formworks 2, and the short tubes 9 are located between the clips 11 and the side formworks 2. The short tubes 9 can distribute the pressure applied to the side formworks 2 more evenly. The long screws 10 are used to cooperate with the nuts to fix the formworks. The two long screws 10 are respectively located on the lower side of the staircase lower formwork and the upper side of the staircase upper formwork. The two long screws 10 of the side formwork tension fasteners are parallel to each other, and the long screws 10 of the side formwork tension fasteners do not pass through the staircase body. Each group of short tubes 9 has two, and the clips 11 are mountain-shaped clips. Each clip 11 is used to clamp a group of short tubes 9, and the two side formworks 2 are clamped and fixed by the two groups of short tubes 9. The nuts are used to apply prestress to the formwork, which helps to resist the pressure of concrete during the concrete pouring process and maintain the rigidity and shape of the formwork. There are several groups of side formwork tensioning fasteners, and the required number can be selected according to the height of the stairs.

[0025] The tension fasteners of the upper template of the stair section include at least two groups of middle tubes 12, two groups of long tubes 13, four short screws 14, clips 11 and nuts sleeved near the two ends of the short screws 14, wherein the two groups of middle tubes 12 are located on the lower side of the lower template 1 of the stair section, the two groups of middle tubes 12 are arranged in parallel near the upper and lower ends of the lower side of the lower template 1 of the stair section, the two groups of long tubes 13 are located on the upper side of the upper template of the stair section, and the two groups of long tubes 13 are arranged in parallel near the left and right ends of the upper side of the upper template of the stair section. The short screw 14 is perpendicular to the lower template of the stair section, and passes through the upper template of the stair section and the lower template of the stair section. Through holes for the short screw 14 to pass through are opened on the lower template 1 of the stair section and the tread template 3, and sleeves are commonly connected at the through holes, and the short screw 14 is inserted in the sleeves, and the sleeves are convenient for removing the short screw 14 when disassembling the mold. Tighten the nut so that the clip 11 presses the two groups of middle tubes 12 and the two groups of long tubes 13 against the upper template and the lower template of the stair section respectively, and fixes the upper template and the lower template of the stair section. In this embodiment, the two groups of middle tubes 12 are arranged horizontally, and the two groups of long tubes 13 are arranged along the slope of the stairs, and the two groups of long tubes 13 are perpendicular to the two groups of long tubes 13. It is also possible to replace the two groups of middle tubes 12 on the lower side of the stair section lower template 1 with two groups of long tubes 13, and to arrange the two groups of long tubes 13 on the lower side of the stair section lower template 1 in parallel with the two groups of long tubes 13 on the upper template of the stair section (not shown), and the number of short screws 14 and the corresponding clips and nuts can be increased according to the length of the stairs.

[0026] A support rod 4 is provided on the lower side of the step lower template 1, and the middle tube 12 or long tube 13 on the lower side of the step lower template 1 is perpendicular to the support rod 4; a support rod 4 is provided on the outer side of the side template 2, and the short tube 9 on the outer side of the side template 2 is perpendicular to the support rod 4. The support plate 4 increases the stability and bearing capacity of the template. A support rod 4 is provided at the joint between the lower end of the riser template and the tread template 3 to ensure that the joint between the lower end of the riser template and the tread template 3 remains stable during concrete pouring. In this embodiment, the support rod 4 is a wooden square with a cross-sectional size of 50mm×100mm. The templates in this embodiment are all wooden templates, and the templates and the templates and the support rod 4 are fixed with nails. The support rod 4 can also be a square tube, etc.

[0027] An angle plate 6 is provided at the joint between the upper end of the riser template and the tread template 3 to improve the stability of the template structure. The angle plate 6 is a right-angle angle plate. In this embodiment, the angle plate 6 is a 50mm×50mm×5mm angle steel. The angle plate 6 is in contact with the long tube 13 to ensure the rigidity and stability of the joint between the upper end of the riser template and the tread template 3, and prevent it from displacement or deformation due to excessive pressure during the concrete pouring process.

Claims

1. A stair formwork device, characterized in that: It includes a template assembly and template tension fasteners; the template assembly includes a lower template of the stair segment, two side templates arranged on both sides of the lower template of the stair segment, and an upper template of the stair segment arranged between the two side templates; the upper template of the stair segment includes a plurality of tread templates and riser templates arranged alternately, and a vibration hole and an exhaust hole are opened on the tread template; the template tension fasteners include side template tension fasteners and upper template tension fasteners.

2. The stair formwork device according to claim 1, characterized in that: The side template tensioning fasteners include two groups of short tubes, two long screw rods, and clips and nuts sleeved near the two ends of the long screw rods.

3. The stair formwork device according to claim 1 or 2, characterized in that: The ladder section upper template tensioning fasteners include two groups of middle tubes, two groups of long tubes, four short screw rods, and clips and nuts sleeved near the two ends of the short screw rods.

4. The stair formwork device according to claim 3, characterized in that: The two groups of middle tubes are arranged in parallel near the upper and lower ends of the lower side of the stair section lower template, and the two groups of long tubes are arranged in parallel near the left and right ends of the upper side of the stair section upper template.

5. The stair formwork device according to claim 3, characterized in that: Support rods are arranged on the lower side of the step lower template and the outer side of the side template.

6. The stair formwork device according to claim 5, characterized in that: The support rod on the lower side of the lower template of the ladder section is perpendicular to the middle tube.

7. The stair formwork device according to claim 3, characterized in that: A through hole for the short screw to pass through is provided on both the step lower template and the tread template, and a sleeve is passed through the through hole, and the short screw is passed through the sleeve.

8. The stair formwork device according to claim 1, characterized in that: A support rod is arranged at the joint between the lower end of the riser template and the tread template.

9. The stair formwork device according to claim 1, characterized in that: An angle plate is arranged at the joint between the upper end of the riser template and the tread template.

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