Steel combined template for building stair construction

Abstract

The utility model belongs to the technical field of building stair construction, and relates to a steel combined formwork for building stair construction, which comprises a stair step mold, a steel step mold and a special-shaped wood stop block, the steel step mold is clamped on the special-shaped wood stop block, and the special-shaped wood stop block is detachably mounted between stair side molds through opposite-pull screws; a clamping assembly is arranged on the special-shaped wood check block, and a clamping groove matched with the clamping assembly is formed in the steel step formwork. The strength and the rigidity of the steel step formwork are far higher than those of a wood formwork, so that the problems of formwork expansion of the step formwork, grout leakage during concrete pouring and the like are effectively avoided, accurate butt joint between stair step molds is ensured through matching of the clamping assemblies and the clamping grooves, the installation and use precision of the formwork is improved, and the construction cost is reduced. And the steel step template and the special-shaped wood baffle blocks can be randomly disassembled and recombined, so that the template can be conveniently recycled, the loss rate of the template is reduced, and the economical efficiency of the template is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building stair construction, in particular to a steel composite template used for building stair construction. Background Art

[0002] Stairs are vertical transportation structures between floors of a building. They serve as the main escape route in the event of secondary disasters such as fires and earthquakes. Therefore, the quality of their concrete construction is crucial. Currently, in construction projects, the processing and use of stair concrete formwork has the following three problems:

[0003] Problem 1: Concrete pouring uses traditional wooden formwork, which has poor formwork support stability and weak formwork reinforcement. Due to the limited strength and rigidity of wooden formwork, problems such as tread formwork expansion and concrete pouring leakage are very likely to occur;

[0004] Problem 2: Traditional wooden formwork processing has large errors and is overly dependent on the quality awareness of the construction team. Wooden formwork processing is prone to problems such as formwork misalignment and uneven joints.

[0005] Question 3: Traditional wooden formwork is very easy to be damaged during the demoulding process, which affects its secondary use. It has a low turnover rate, a high loss rate and poor economic efficiency.

[0006] Therefore, a steel composite formwork for building staircase construction is proposed to improve the installation and use accuracy of the formwork and the overall support stability, while ensuring the turnover rate of the formwork and improving the economy of formwork use. Utility Model Content

[0007] In order to solve the existing problem, the utility model provides a steel composite template for building stair construction.

[0008] The technical solution of the utility model is achieved through the following scheme: a steel composite formwork for building stair construction, comprising a stair side formwork, a stair base membrane and a plurality of stair tread molds, wherein the stair side formwork is fixedly installed on both sides of the stair base membrane, and the plurality of stair tread molds are detachably installed between the stair side formworks in a stepped manner by tension screws;

[0009] The stair tread mold includes a steel tread template and a special-shaped wooden block, wherein the steel tread template is clamped on the special-shaped wooden block, and the special-shaped wooden block is detachably installed between the stair side molds through a tension screw;

[0010] The special-shaped wooden stopper is provided with a clamping assembly, and the steel step template is provided with a clamping groove adapted to the clamping assembly.

[0011] Through the above technical solutions, the strength and rigidity of the steel tread formwork are much higher than those of the wooden formwork, which effectively avoids problems such as tread formwork expansion and concrete leakage. Through the cooperation of the clamping components and the clamping grooves, the precise docking between the stair tread molds is ensured, and the accuracy of the formwork installation and use is improved. In addition, the steel tread formwork and the special-shaped wooden blocks can be disassembled and reassembled at will, which facilitates the turnover of the formwork, reduces the loss rate of the formwork, and improves the economy of the formwork.

[0012] Preferably, the clamping assembly includes a protrusion, a rebound splint and a slider, the rebound splint is arranged in an L-shape in the special-shaped wooden block, the protrusion is installed on the special-shaped wooden block, a slideway adapted to the slider is opened in the protrusion, and the built-in end of the rebound splint is connected to the slider.

[0013] Preferably, a connecting groove is provided on the special-shaped wooden block, the connecting groove is connected to the slideway, and the connecting groove is "L"-shaped.

[0014] Through the above technical solution, the clamping assembly makes the connection between the steel step formwork and the special-shaped wooden block more convenient and stable. Through the cooperation of the protrusion, rebound splint and slider, the steel step formwork can be quickly clamped and fixed. The design of the clamping assembly makes the connection between the steel step formwork and the special-shaped wooden block more secure, reduces the risk of formwork damage caused by loose connection, maintains the formwork in good condition, and improves construction quality and efficiency.

[0015] Preferably, the stair side formwork is provided with through holes adapted to the tension screws, the special-shaped wooden block is provided with screw holes, and the stair side formwork through holes are connected to the screw holes via the tension screws.

[0016] Preferably, the screw holes are provided at both ends of the special-shaped stopper, and through holes corresponding to the screw holes at both ends are provided inside the special-shaped stopper.

[0017] Preferably, the special-shaped wooden block is convex, the steel step template is concave, and the steel step template is cast against the corner area of ​​the stairs.

[0018] Through the above technical solution, the special-shaped wooden block is designed to be convex, which matches the concave steel tread template. The combination of convex and concave design not only enhances the fit between the templates, but also helps to improve the construction accuracy, ensuring that the stair treads are more regular and beautiful. The design of the steel tread template against the corner area of ​​the stair casting effectively solves the problems of mold expansion, concrete leakage, misalignment, and uneven closing during the casting process of the stair treads.

[0019] In summary, the present invention has the following beneficial effects:

[0020] 1. The utility model uses a steel tread formwork whose strength and rigidity are much higher than those of a wooden formwork, thereby effectively avoiding problems such as tread formwork expansion and concrete leakage. The cooperation of the clamping assembly and the clamping groove ensures the precise docking between the stair tread molds, improves the accuracy of formwork installation and use, and the steel tread formwork and special-shaped wooden blocks can be disassembled and reassembled at will, which facilitates the turnover of the formwork, reduces the loss rate of the formwork, and improves the economy of the formwork.

[0021] 2. The clamping assembly makes the connection between the steel step formwork and the special-shaped wooden block more convenient and stable. Through the cooperation of the protrusion, rebound splint and slider, the steel step formwork can be quickly clamped and fixed. The design of the clamping assembly makes the connection between the steel step formwork and the special-shaped wooden block more secure, reduces the risk of formwork damage caused by loose connection, maintains the formwork in good condition, and improves construction quality and efficiency.

[0022] 3. The special-shaped wooden block is designed to be convex, which matches the concave steel tread template. The combination of convex and concave design not only enhances the fit between the templates, but also helps to improve the construction accuracy, ensuring that the stair treads are more regular and beautiful. The design of the steel tread template against the corner area of ​​the stair casting effectively solves the problems of mold expansion, concrete leakage, misalignment, and uneven closing during the stair tread casting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the steel step template of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the assembly of the steel step template and the special-shaped wooden block of the utility model;

[0025] Figure 3 This is a partial cross-sectional structural diagram of the special-shaped wooden block of the present invention;

[0026] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at A;

[0027] Figure 5 This is a schematic diagram of the tension screw structure of the utility model;

[0028] Figure 6 This is a schematic diagram of the assembly structure of the steel step template, special-shaped wooden block and tension screw rod of the utility model;

[0029] Figure 7 This is a schematic diagram of the overall assembly structure of the utility model;

[0030] Figure 8 It is a schematic diagram of the structure after pouring of the utility model.

[0031] Explanation of the accompanying symbols: 1. Stair side formwork; 2. Steel step formwork; 3. Special-shaped wooden block; 4. Stair base membrane; 5. Tension screw; 6. Screw hole; 7. Stair concrete; 8. Snap-in assembly; 9. Snap-in groove. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification. The present invention is further described in detail below with reference to the accompanying drawings.

[0034] A steel composite formwork for building stair construction, such as Figure 1-8 As shown, it includes a stair side formwork 1, a stair bottom membrane 4 and several stair tread molds, the stair side formwork 1 is fixedly installed on both sides of the stair bottom membrane 4, and several stair tread molds are detachably installed between the stair side formworks 1 in a stepped manner through tensioning screws 5; the stair tread mold includes a steel tread formwork 2 and a special-shaped wooden block 3, the steel tread formwork 2 is clamped on the special-shaped wooden block 3, and the special-shaped wooden block 3 is detachably installed between the stair side formworks 1 through tensioning screws 5; a clamping component 8 is provided on the special-shaped wooden block 3, and a clamping groove 9 adapted to the clamping component 8 is opened on the steel tread formwork 2. The steel tread formwork 2 is used for stair casting. The steel formwork has high strength and rigidity, is not easy to deform, is firmly reinforced, and has strong formwork support stability, which can effectively solve quality problems such as mold expansion and concrete leakage during stair tread casting. The tensioning screws 5 pass through the nuts at both ends. The special-shaped wooden block 3 is fixed to the stair side formwork 1 with gaskets. The steel tread formwork 2 has higher processing precision than the wooden formwork, which can effectively solve the problems of misalignment and uneven closing of the wooden step formwork. The steel formwork has a high degree of customization and can be reused, which reduces the loss of formwork materials and has good economic feasibility. The close fit between the formworks and the auxiliary locking design of the clamping assembly 8 effectively prevent the problem of leakage during concrete pouring and ensure the pouring quality of the stair treads. The stability and firmness of the formwork also reduce the risk of safety accidents caused by collapse or deformation of the formwork. The stair construction is based on the stair size required by the drawing, and the stair bottom formwork and stair side formwork 1 are laid, and the stair steel bars are configured. The stair tread position is positioned according to the drawing requirements, where the height of the special-shaped wooden block 3 and the steel tread formwork 2 is the step height, and the width is the stair width.

[0035] The clamping assembly 8 includes a protrusion, a rebound splint and a slider. The rebound splint is L-shaped and arranged in the special-shaped wooden block 3. The protrusion is installed on the special-shaped wooden block 3. A slideway adapted to the slider is opened in the protrusion. The built-in end of the rebound splint is connected to the slider. The built-in end of the rebound splint is connected to the slideway. The rebound splint is composed of two "L"-shaped splints and a reset spring. A connecting groove is opened on the special-shaped wooden block 3. The connecting groove is connected to the slideway. The connecting groove is "L"-shaped. The rebound splint is installed in the connecting groove, and the vertical end part is exposed. The horizontal end part is connected to the slideway. The end is a built-in end, which is connected to the slider in the slide of the protruding block. The number of sliders is preferably two, which provides a more stable locking force to prevent the steel step template 2 from falling off. The clamping groove 9 on the steel step template 2 is a "T"-shaped groove. When clamping, press the connecting block. At this time, the protruding sliders on both sides of the protruding block are retracted into the slide, and the protruding block easily enters the "T"-shaped clamping groove 9 of the steel step template 2. After loosening, it is reset by the reset spring in the center of the two connecting blocks. At this time, the protruding connecting blocks on both sides of the protruding block pop out to lock and clamp.

[0036] The stair side formwork 1 is provided with a through hole compatible with the tension screw 5, and the special-shaped wooden block 3 is provided with a screw hole 6. The through hole of the stair side formwork 1 is connected to the screw hole 6 through the tension screw 5. The screw hole 6 is provided at both ends of the special-shaped block. The inside of the special-shaped block is provided with a through hole opposite to the screw holes 6 at both ends. The middle part of the special-shaped wooden block 3 is provided with a through hole, and the through hole and the screw hole 6 are on the same axis. Screw holes 6 are provided at both ends to ensure that the tension screw 5 is connected to the special-shaped wooden block. The presence of the through hole reduces the working time required to screw in the tension screw 5, saving time for the staff. After the tension screw 5 is screwed in from one section, it directly passes through the through hole and then completes the connection with the screw hole 6 at the other end. The two ends of the protruding stair side formwork 1 are screwed with nuts and gaskets to complete the fixation.

[0037] The special-shaped wooden block 3 is convex, and the steel step formwork 2 is concave. The steel step formwork 2 is against the corner area of ​​the stair casting, and the shapes are complementary, so that the two can fit tightly during installation, reducing the gap during the installation process, thereby improving the accuracy and stability of the step formwork, forming a more solid support structure, and helping to resist the pressure generated by the concrete during the pouring process, preventing the formwork from deforming or displacing. The steel step formwork 2 is against the back and fits tightly to the corner area, ensuring that the concrete is evenly distributed during the pouring process, reducing the generation of bubbles and gaps. Steel has high strength, high rigidity, and is not easy to deform, making the cast stair surface smoother and smoother, and improving the aesthetics.

[0038] Working principle: accurately position the special-shaped wooden stopper 3 on the stair side formwork 1, and open through holes at the corresponding positions of the stair side formwork 1 according to the threaded holes at both ends of the special-shaped wooden stopper 3, clamp the steel step formwork 2 and the special-shaped wooden stopper 3, and lock it through the clamping assembly 8. Further, the staff will pass the tension screw 5 through the special-shaped wooden stopper 3 and the tension screw 5 through-hole opened in the stair side formwork 1, use nuts and gaskets to fasten the special-shaped wooden stopper 3 to the stair side formwork 1, and then tighten the steel step formwork 2. The steel step formwork 2 is installed with the back-casting corner area. After the installation of multiple formworks is completed, the final pouring of the stair concrete 7 is carried out.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A steel composite formwork for building staircase construction, characterized by: It comprises a stair side form (1), a stair base membrane (4) and a plurality of stair tread molds, wherein the stair side forms (1) are fixedly mounted on both sides of the stair base membrane (4), and the plurality of stair tread molds are detachably mounted between the stair side forms (1) in a stepped manner via tension screws (5); The stair tread mold comprises a steel tread template (2) and a special-shaped wooden block (3), wherein the steel tread template (2) is clamped on the special-shaped wooden block (3), and the special-shaped wooden block (3) is detachably mounted between the stair side molds (1) via a tension screw (5); The special-shaped wooden stopper (3) is provided with a clamping assembly (8), and the steel step template (2) is provided with a clamping groove (9) adapted to the clamping assembly (8).

2. The steel composite formwork for building staircase construction according to claim 1, characterized in that: The clamping assembly (8) comprises a protrusion, a rebound splint and a slider, the rebound splint is arranged in an L-shape in the special-shaped wooden block (3), the protrusion is mounted on the special-shaped wooden block (3), a slideway adapted to the slider is provided in the protrusion, and the built-in end of the rebound splint is connected to the slider.

3. The steel composite formwork for building staircase construction according to claim 1, characterized in that: The stair side formwork (1) is provided with a through hole adapted to the tension screw (5), the special-shaped wooden block (3) is provided with a screw hole (6), and the through hole of the stair side formwork (1) is connected to the screw hole (6) via the tension screw (5).

4. The steel composite formwork for building staircase construction according to claim 3, characterized in that: The screw holes are provided at both ends of the special-shaped stopper, and through holes corresponding to the screw holes at both ends are provided inside the special-shaped stopper.

5. The steel composite formwork for building staircase construction according to claim 1, characterized in that: The special-shaped wooden block (3) is convex, the steel step template (2) is concave, and the steel step template (2) is cast against the corner area of ​​the staircase.

6. The steel composite formwork for building staircase construction according to claim 2, characterized in that: The special-shaped wooden block (3) is provided with a connecting groove, the connecting groove is connected to the slideway, and the connecting groove is in an "L" shape.

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