Modularized steel stair step template

Abstract

The utility model discloses a modularized steel stair step template, and relates to the technical field of building stair templates. Comprising steel side edge formworks (1), steel step formworks (2) and steel inclined bars (3). A steel step template is mounted at each step position between the two steel side edge templates, and two steel inclined bars are longitudinally arranged on each steel step template side by side; each group of steel step templates consists of four connecting modules, a triangular block and a telescopic module, two ends of the telescopic module are inserted into ports of the two connecting modules in the middle, and the telescopic module and the connecting modules are fixed through telescopic module fixing screws; each connecting module is provided with a triangular block, the triangular blocks are arranged on the two sides of the steel inclined bar, the triangular blocks are fixed to the steel inclined bar through inclined bar fixing screws, and the two opposite triangular blocks are connected together through connecting screws. The problems that the size of an existing stair step formwork cannot be adjusted according to needs, installation is inconvenient, and universality is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of building staircase formworks, in particular to a steel stair tread formwork structure. Background Art

[0002] In recent years, with the acceleration of urbanization, the construction industry has developed well. In the process of construction, wooden staircase formwork is used in traditional technology. The traditional staircase construction method is generally to set up stair slabs of corresponding specifications according to the different sizes of stairs after the support frame is erected, and then fix the side rails on the stair slabs and finally install the stair tread formwork on the side rails. In daily construction, if this method is used, it is easy to cause mold expansion, uneven corners, honeycomb surface, etc., which directly affects the quality of the main structure and the installation of stair handrails and the quality of surface decoration construction, delaying the progress of the project. And because the sizes of stairs are different, the wooden formwork customized according to the size often becomes waste after several uses, causing unnecessary material loss to the construction, which is a big problem in projects with a large number and variety of stairs.

[0003] In addition, the wooden formwork is not firmly reinforced and is prone to deformation, which makes it difficult to ensure the cross-sectional size of the stair treads, resulting in common quality problems such as large errors in the appearance, size, and shape of the stair surface; at the same time, the installation and removal processes are complicated, difficult to handle, and the workload is large. A large amount of beating and repairing work is required in the subsequent decoration process, which is labor-intensive and material-intensive, and is neither economical nor environmentally friendly. If there are stairs of many sizes, construction workers need to customize multiple types of stair formwork, which has a low turnover rate, is very likely to cause material waste, and increase the cost of the project. In addition, wooden formwork is prone to breakage during concrete pouring, which poses a safety hazard.

[0004] Chinese patent document CN104110132B discloses an adjustable combined staircase steel formwork for high-rise buildings and its assembly method. The patent modifies the previous connection method to make the demoulding step simpler; by adding movable joints, the formwork does not need to be disassembled into parts during demoulding and turnover, which saves time for formwork turnover and improves work efficiency. The disadvantage of this patent is that the step formwork cannot be adjusted in size according to needs, is inconvenient to install, and has poor versatility.

[0005] In view of this, this utility model is applied for. Utility Model Content

[0006] The utility model provides a modular steel stair tread template to solve the problems that the existing stair tread template cannot adjust the size according to needs, is inconvenient to install and has poor versatility.

[0007] In order to solve the above problems, the utility model provides a modular steel stair tread template, a modular steel stair tread template, and a modular steel stair tread template, comprising a steel side board template 1, a steel tread template 2 and a steel diagonal bar 3; a steel tread template 2 is installed at each step position between two steel side board templates 1, and two steel diagonal bars 3 are longitudinally arranged side by side on the steel tread template 2;

[0008] Each set of steel step templates 2 is composed of four connection modules 21, triangular blocks 22 and a telescopic module 23, and the connection modules 21 and the telescopic modules 23 are both square steel tubes; a connection module 21 is provided on the left and right sides of each steel diagonal bar 3, and the two connection module 21 ports are opposite to each other below the steel diagonal bar 3, and the outer ends of the two connection modules 21 on the outer sides of the steel diagonal bar 3 are respectively connected to the steel side board templates 1 on both sides, and the two ends of the telescopic module 23 are inserted into the two middle connection module 21 ports, and the telescopic module 23 and the connection module 21 are fixed by the telescopic module fixing screws 53;

[0009] The triangular block 22 is a triangular steel plate. There is a triangular block 22 on each connecting module 21. The right-angle notch on the triangular block 22 is welded to the connecting module 21. The triangular blocks 22 are arranged on both sides of the steel slash bar 3. The triangular blocks 22 are fixed to the steel slash bar 3 by slash bar fixing screws 51. The two opposite triangular blocks 22 are connected together by connecting screws 52.

[0010] Furthermore, the modular steel stair tread formwork of the present invention also has the following characteristics: a prefabricated part 4 is fixed at the position where the steel tread formwork 2 is installed on the inner side of the steel side rail formwork 1, the rectangular prefabricated part 4 is a wooden structure, and the port of the connecting module 21 is buckled on the outer side of the prefabricated part 4.

[0011] Advantages of this utility model:

[0012] The steel step formwork adopts a modular structure, which is easy to install and has a stable structure.

[0013] For stair treads of different sizes, you only need to adjust the length of each steel tread template module and fix it, then you can assemble and fix it into a whole, and then you can embed it into the prefabricated parts. It has a certain rigidity and is not easily damaged during repeated use and turnover, which saves materials and directly reduces construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is an exploded view of the steel step formwork;

[0016] Figure 3 It is an exploded view of the components connecting the module and the triangular block;

[0017] Figure 4 It is the installation structure drawing of the prefabricated parts;

[0018] Figure 5 It is a schematic diagram of the connection between the steel step formwork and the steel diagonal bar.

[0019] Explanation of symbols in the figure: steel side board formwork 1, steel step formwork 2, connecting module 21, triangular block 22, telescopic module 23, steel slash 3, prefabricated part 4, slash fixing screw 51, connecting screw 52, ​​telescopic module fixing screw 53. DETAILED DESCRIPTION

[0020] The present invention is described in detail with reference to the best embodiment below.

[0021] like Figure 1 As shown, the modular steel stair tread template includes a steel side board template 1, a steel tread template 2 and a steel diagonal bar 3; after the stair template is set up, the steel side board template 1 is installed and fixed on both sides of the steps, and the steel side board template 1 is fixed to the set stair template; a steel tread template 2 is installed at each step position between the two steel side board templates 1, and two steel diagonal bars 3 are arranged longitudinally side by side on the steel tread template 2.

[0022] like Figure 2 , 3 As shown in , 5, each group of steel step formwork 2 is composed of four connecting modules 21 and one telescopic module 23, and the connecting modules 21 and the telescopic modules 23 are both square steel tubes; a connecting module 21 is arranged on the left and right sides of each steel diagonal bar 3, and the two connecting module 21 ports are arranged opposite to each other below the steel diagonal bar 3. The outer ends of the two connecting modules 21 on the outer sides of the steel diagonal bar 3 are respectively connected to the steel side board formworks 1 on both sides, and the two ends of the telescopic module 23 are inserted into the two middle connecting module 21 ports, and the telescopic module 23 and the connecting module 21 are fixed by the telescopic module fixing screws 53.

[0023] like Figure 2 , 3 As shown in Figure 5, the triangular block 22 is a triangular steel plate. There is a triangular block 22 on each connecting module 21. The right-angle notch on the triangular block 22 is welded to the connecting module 21. The triangular blocks 22 are arranged on both sides of the steel diagonal bar 3. The triangular blocks 22 are fixed to the steel diagonal bar 3 by the diagonal bar fixing screws 51, and the two opposite triangular blocks 22 are connected together by the connecting screws 52.

[0024] like Figure 4 As shown, a prefabricated part 4 is fixed at the position where the steel step formwork 2 is installed on the inner side of the steel side board formwork 1. The rectangular prefabricated part 4 is a wooden structure, and the end of the connecting module 21 is buckled on the outer side of the prefabricated part 4, thereby fixing the two ends of the steel step formwork 2.

[0025] The steel side sill formwork 1 and the steel step formwork 2 are both steel formworks. The staircase formwork uses Q345B steel as the raw material, which is first cold-drawn and then electrolytically galvanized with water-soluble galvanizing to make the steel anti-oxidation, anti-corrosion, beautiful and durable. When making the step formwork, the steel plates are shaped by full welding, and the welding method is argon arc welding. Argon gas protection can isolate the adverse effects of oxygen, nitrogen, hydrogen and other gases in the air on the arc and molten pool, reduce the burning of alloy elements, and obtain dense, spatter-free, high-quality welding joints; the arc combustion of argon arc welding is stable, the heat is concentrated, the arc column temperature is high, the welding production efficiency is high, the heat-affected zone is narrow, and the welded parts have little stress, deformation and crack tendency. The steel formwork has a certain rigidity, so it is not easy to expand the formwork when pouring concrete, and it is not easy to be damaged during repeated use. After the steel formwork is demolded, the concrete is beautiful and the surface is smooth. The telescopic structure is conducive to assembly by construction personnel, and modularization is also conducive to mass production and promotion.

[0026] Reduce construction costs during the construction process: The steel step template is retractable and modular. For stair treads of different sizes, you only need to adjust the length of each steel step template module and fix it, then you can assemble and fix it as a whole, and then you can embed it into the prefabricated parts. It has a certain rigidity and is not easily damaged during repeated use and turnover, which saves materials and directly reduces construction costs.

[0027] Improve construction efficiency: Modular steel stairs with fixed size and mass production are used for various construction sites, which can greatly advance the construction period of stair formwork. The stair tread formwork is assembled, so one construction worker can complete the installation alone, and the telescopic form can adjust the size at the fastest speed. Compared with traditional construction methods, the construction efficiency of this process can be increased by 400%-600%, which has a promoting effect on projects with tight construction schedules.

[0028] Ensure quality: In the construction, we always maintain the goal of "safety first, quality first". Quality is the top priority of construction and an intuitive factor in evaluating a project. Steel formwork does not require drilling and can ensure the squareness of the internal and external corners. It has high strength and solves the problem of mold expansion. After demoulding, the concrete surface is beautiful, flat and precise.

[0029] Green construction: Steel formwork is used for construction, which does not require on-site cutting like wooden formwork. The environment is clean and tidy, which can enhance the humanistic care for workers. There is less waste after construction, and the formwork can be reused for more than 50 times, which is in line with the concept of green environmental protection and can bring good social benefits.

[0030] It is suitable for projects with tight construction schedule, large number of stairs and specifications, and high requirements for the quality of concrete products.

[0031] Operation points:

[0032] 1. Positioning and laying out

[0033] Before construction, the project surveyor will locate the stairs according to the drawings and mark them with lines.

[0034] 2. Stair slab formwork

[0035] The construction workers used scaffolding as the formwork support system and then set up stair slabs on top.

[0036] 3. Install steel side sill template

[0037] After the stair slab formwork is set up, the construction workers install the steel side board formwork above the stair slab and reserve prefabricated parts for embedding the steel step formwork.

[0038] 4. Combined stepping module

[0039] The construction workers draw the size of the stair treads in advance according to the drawings. The stair tread template is divided into a connection module and a telescopic module. The connection block is equipped with a connection triangle block, and the surface of the triangle block has bolt holes reserved for connecting and fixing the connection modules, and also for fixing the diagonal bar to connect all the treads.

[0040] The utility model provides a new type of staircase template, which can not only ensure the quality of stair molding, but also facilitate workers to quickly install and disassemble. After many discussions and tests, steel modular stair treads are used as stair tread templates. The steel modular stair treads have the following advantages: high strength and can be repeatedly used hundreds of times, the telescopic design can adjust the width size at will, and can be used in a wide range of scenarios, avoiding the disadvantage of wooden templates that cannot be adjusted after one-time shaping. In addition, the modular creation can make construction more convenient, easy to disassemble and assemble, and greatly shorten the construction time. Using 3mm thick steel plates, the strength is high and can be turned over many times, which improves the economic benefits. The steel template can also ensure that the corners are square and the size is accurate, which improves the one-time acceptance rate of the stairs.

[0041] Compared with the traditional construction method, the modular construction of this utility model has a simpler process, shortens the construction period by more than four times, saves labor costs, is easy to install and disassemble, and uses steel beam fixtures that can be turned over multiple times, thereby reducing the cost of stair construction. The telescopic adjustment size can adapt to stair treads of various widths, and there is no limitation of working conditions during construction. At the same time, it also saves materials during multiple turnovers, achieves green construction and waste reduction, and creates certain economic and social benefits for the company. It has also withstood the test in daily construction, greatly improving the first-time acceptance rate of stair quality. This construction method has achieved all-round innovation and is in a leading position in the industry.

Claims

1. Modular steel stair tread formwork, characterized by: A modular steel stair tread template comprises a steel side board template (1), a steel tread template (2) and a steel diagonal bar (3); a steel tread template (2) is installed at each tread position between two steel side board templates (1), and two steel diagonal bars (3) are arranged longitudinally side by side on the steel tread template (2); Each set of steel step templates (2) is composed of four connection modules (21), a triangular block (22) and a telescopic module (23), and the connection modules (21) and the telescopic module (23) are both square steel tubes; a connection module (21) is provided on the left and right sides of each steel diagonal bar (3), and the two connection module (21) ports are opposite to each other below the steel diagonal bar (3); the outer ends of the two connection modules (21) outside the steel diagonal bar (3) are respectively connected to the steel side board templates (1) on both sides, and the two ends of the telescopic module (23) are inserted into the two middle connection module (21) ports, and the telescopic module (23) and the connection module (21) are fixed by telescopic module fixing screws (53); The triangular block (22) is a triangular steel plate. Each connecting module (21) has a triangular block (22). The right-angle notch on the triangular block (22) is welded to the connecting module (21). The triangular blocks (22) are arranged on both sides of the steel slash bar (3). The triangular blocks (22) are fixed to the steel slash bar (3) by slash bar fixing screws (51). Two opposite triangular blocks (22) are connected together by connecting screws (52).

2. The modular steel stair tread formwork according to claim 1, characterized in that: A prefabricated component (4) is fixed at a position where the steel step template (2) is installed on the inner side of the steel side board template (1). The rectangular prefabricated component (4) is a wooden structure, and the port of the connection module (21) is buckled on the outer side of the prefabricated component (4).

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