Steel structure for precast concrete stairs

Abstract

The steel structure comprises a main frame body, a plurality of ladder plates arranged on the main frame body and a frame plate arranged on the main frame body, the main frame body comprises main ladder assemblies, connecting frames arranged on the main ladder assemblies and fixing plates arranged on the connecting frames, and a connecting assembly is arranged between the two main ladder assemblies; the connecting assembly comprises a plurality of connecting strip assemblies and connecting plates arranged on the connecting strip assemblies, each group of connecting strip assemblies comprises two connecting rods connected between the main ladder frames, and the connecting plates are used for mounting concrete ladder plates; a reinforcing rod, an inclined rod and a supporting plate are arranged on the connecting frames, the reinforcing rod is connected between the two connecting frames, the length direction of the reinforcing rod is the same as that of the connecting rods, and the frame plate is supported on the reinforcing rod and the inclined rod. The installation structure has the effect of facilitating installation of the prefabricated stair pieces.

Description

Technical Field

[0001] The present application relates to the field of building construction technology, and in particular to a steel structure for precast concrete stairs. Background Art

[0002] Common precast concrete stairs are usually formed after a system of processes and then installed according to pre-measured data. These concrete stairs are often heavy and need to be installed with the help of lifting equipment. However, when installing stairs in small villas or private ground-floor buildings (such as common three-story or four-story residential buildings), lifting equipment is not easy to bring to the site. If the stairs are built by cement on-site construction, the efficiency is not high and needs to be improved. Utility Model Content

[0003] In order to facilitate the installation of prefabricated staircase components, the present application provides a steel structure for prefabricated concrete stairs.

[0004] This application provides a prefabricated concrete staircase steel structure, which adopts the following technical solution:

[0005] A steel structure for precast concrete stairs, comprising a main frame, a plurality of stair treads arranged on the main frame and a frame plate arranged on the main frame, the main frame comprising a main ladder frame, a connecting frame arranged on the main ladder frame and a fixed plate arranged on the connecting frame, a connecting assembly is provided between two of the main ladder frames, the connecting assembly comprises a plurality of connecting bar assemblies and a connecting plate arranged on the connecting bar assemblies, each group of the connecting bar assemblies comprises two connecting rods connected between the main ladder frames, the connecting plates are used to install concrete stair treads; a reinforcing rod and an oblique rod are provided on the connecting frame, the reinforcing rod is connected between the two connecting frames, the length direction of the reinforcing rod is the same as the length direction of the connecting rod, and the frame plate is supported on the reinforcing rod and the oblique rod.

[0006] By adopting the above technical solution, the staircase component is based on the main frame of the steel structure. When erecting the prefabricated staircase components, the main frame is first erected at the designated position, and then the connecting components are erected between the two main frames. Then, the support plates and various components (such as screws, etc.) are installed in corresponding positions in turn to assemble the staircase components. Finally, the prefabricated staircase components are installed to higher floors in turn. The prefabricated staircase components are lighter in weight. Compared with the commonly used prefabricated concrete staircase components that weigh several tons, the prefabricated staircase components do not require the help of lifting equipment for installation. Only a few workers are needed to carry and install them together. The installation difficulty is low and the structure is stable.

[0007] Optionally, a supporting protrusion is provided at the bottom end of the main ladder frame, and the supporting protrusion is used to abut against the ground; the fixing plate is located at one end of the connecting frame away from the main ladder frame, and the fixing plate is used to be connected to the wall.

[0008] By adopting the above technical solution, supporting protrusions are provided to support the ground and fixed to the wall through fixing plates, so that the stair prefabricated component can be stably installed in a designated position.

[0009] Optionally, the fixing plate is provided with fixing holes, and the fixing holes are used to fix the fixing plate to the wall.

[0010] By adopting the above technical solution, fixing holes are provided to fix the fixing plate to the wall, so that the stair member has a force bearing point.

[0011] Optionally, a mounting plate is integrally fixed on the fixing plate, and a connecting hole is provided on the mounting plate.

[0012] By adopting the above technical solution, connecting holes are provided for screws to pass through and be installed, thereby fixing two adjacent stair prefabricated parts.

[0013] Optionally, a positioning groove is provided on the ladder plate, and the positioning groove is for accommodating the connecting plate. When the connecting plate is accommodated in the positioning groove, both ends of the ladder plate abut against the side walls opposite to the main ladder frame.

[0014] By adopting the above technical solution, positioning grooves are provided for positioning the ladder plate, which facilitates the installation of the ladder plate, reduces the difficulty of installation, and improves the installation efficiency.

[0015] Optionally, a connecting screw is provided on the connecting rod, and the connecting screw fixes the connecting plate to the connecting rod.

[0016] By adopting the above technical solution, connecting screws are provided to fix the connecting plates to the connecting plates, which, on the one hand, fixes the connecting plates for subsequent installation of the stair plates, and on the other hand, increases the strength of the stair prefabricated component.

[0017] Optionally, the ladder plate includes a plate body and a reinforcing steel mesh inside the plate body.

[0018] By adopting the above technical solution, a cement plate prefabricated part is provided and a reinforcing steel mesh is installed in the plate body to increase the strength of the plate body, thereby making the strength of the plate body higher.

[0019] Optionally, the reinforcing steel mesh includes a plurality of transverse steel bars and a plurality of longitudinal steel bars, and the transverse steel bars and the longitudinal steel bars are welded to each other.

[0020] By adopting the above technical solution, a plurality of steel bars are fixed into a steel mesh by welding, and the steel mesh is buried in the plate body of the cement material to strengthen the strength of the ladder plate.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The staircase is based on a main steel frame. When erecting the prefabricated staircase, the main frame is first erected at the designated position, and then the connecting components are erected between the two main frames. The support plates and various components (such as screws, etc.) are then installed in sequence to the corresponding positions to assemble the staircase. Finally, the prefabricated staircase is installed to the upper floors in sequence. The prefabricated staircase is light in weight. Compared with the commonly used prefabricated concrete staircases that weigh several tons, the prefabricated staircase does not require the help of lifting equipment for installation. Only a few workers are needed to carry and install it together. The installation difficulty is low and the structure is stable.

[0023] 2. Positioning grooves are set to position the ladder plate, making it easier to install the ladder plate, reducing installation difficulty and improving installation efficiency;

[0024] 3. Install connecting screws to fix the stair treads to the connecting plates, which not only fixes the stair treads but also increases the strength of the stair prefabricated component.

[0025] 4. Fix several steel bars into a steel mesh by welding, and bury the steel mesh in the cement board to strengthen the strength of the ladder board. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the steel structure for precast concrete stairs in an embodiment of the present application.

[0027] Figure 2 Schematic diagram of the structure of the connection component of the embodiment.

[0028] Figure 3 2 is a schematic structural diagram of a ladder frame according to an embodiment.

[0029] Figure 4 2 is a schematic structural diagram of a reinforcement steel mesh according to an embodiment.

[0030] Explanation of the accompanying reference numerals: 1. Main frame; 11. Ladder frame; 12. Connecting frame; 13. Fixed plate; 2. Ladder plate; 21. Plate body; 22. Reinforced steel mesh; 221. Transverse steel bars; 222. Longitudinal steel bars; 3. Frame plate; 4. Connecting assembly; 41. Connecting bar assembly; 42. Connecting plate; 5. Connecting rod; 6. Reinforcing rod; 7. Diagonal rod; 8. Support plate; 9. Support protrusion; 10. Mounting plate; 14. Positioning groove; 15. Connecting screw. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The present application discloses a steel structure for precast concrete stairs. Figure 1The steel structure for precast concrete stairs includes a main frame 1, a plurality of stair plates 2 mounted on the main frame 1, and a frame plate 3 mounted on the main frame 1. In the embodiment of the present application, the number of stair plates 2 and the vertical spacing between the stair plates 2 are determined as needed.

[0033] Reference Figure 1 and Figure 2 The main frame 1 includes a main ladder frame 11, a connecting frame 12 integrally fixed to the main ladder frame 11, and a fixing plate 13 fixed to the connecting frame 12. A connecting assembly 4 is installed between the two main ladder frames 11. The connecting assembly 4 includes a plurality of connecting bar assemblies 41 and a connecting plate 42 installed on the connecting bar assembly 41. Each group of connecting bar assemblies 41 includes two connecting rods 5 connected between the main ladder frames 11. The connecting plate 42 is used to install the concrete ladder plate 2.

[0034] Reference Figure 1 and Figure 3 The connecting frames 12 are mounted with reinforcing rods 6 and diagonal rods 7. The reinforcing rods 6 are connected and fixed between the two connecting frames 12. The length of the reinforcing rods 6 is the same as the length of the connecting rods 5. The frame plate 3 is supported on the reinforcing rods 6 and diagonal rods 7, and the frame plate 3 is fixed to the reinforcing rods 6 and diagonal rods 7. The bottom end of the main ladder frame 11 is integrally fixed with a support protrusion 9, which is used to abut against the ground.

[0035] Reference Figure 1 and Figure 2 The fixing plate 13 is located at the end of the connecting frame 12 away from the main ladder frame 11, and the fixing plate 13 is used to be connected to the wall. The fixing plate 13 is provided with a fixing hole, and the fixing hole is used to fix the fixing plate 13 to the wall. The fixing plate 13 is integrally fixed with a mounting plate 10, and the mounting plate 10 is provided with a connecting hole, and the connecting hole is used for screws to pass through and install, so that two adjacent stair prefabricated parts are fixed to each other. The ladder plate 2 is provided with a positioning groove 14, and the positioning groove 14 is for accommodating the connecting plate 42. When the connecting plate 42 is accommodated in the positioning groove 14, the two ends of the ladder plate 2 abut against the side walls opposite to the main ladder frame 11.

[0036] Reference Figure 2 and Figure 4 Connecting rods 5 are mounted with connecting screws 15, which secure connecting plates 42 to the connecting rods 5. The ladder tread 2 comprises a plate body 21 and a reinforcing steel mesh 22 within the plate body 21. The reinforcing steel mesh 22 includes a plurality of transverse steel bars 221 and a plurality of longitudinal steel bars 222, which are welded together. The number of transverse steel bars 221 and longitudinal steel bars 222 is determined based on actual needs.

[0037] The implementation principle of the steel structure for precast concrete stairs in the embodiment of the present application is as follows: the staircase component is based on the main frame 1 of the steel structure. When erecting the precast staircase component, the main frame 1 is first erected at a designated position, and then the connecting assembly 4 is erected between the two main frames 1. Then, the support plate 8 and various components (such as screws, etc.) are installed in corresponding positions in turn to assemble the staircase component. Finally, the precast staircase components are installed to higher floors in turn. The precast staircase component is relatively light in weight. Compared with the commonly used precast concrete staircase components weighing several tons, the precast staircase component does not require the aid of lifting equipment for installation. Only a few workers are required to work together to carry and install it. The installation difficulty is low and the structure is stable.

[0038] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A steel structure for precast concrete stairs, characterized by: The invention comprises a main frame (1), a plurality of ladder plates (2) arranged on the main frame (1) and a frame plate (3) arranged on the main frame (1); the main frame (1) comprises a main ladder frame (11), a connecting frame (12) arranged on the main ladder frame (11) and a fixing plate (13) arranged on the connecting frame (12); a connecting assembly (4) is provided between two main ladder frames (11); the connecting assembly (4) comprises a plurality of connecting bar assemblies (41) and a connecting bar arranged on the connecting bar assembly (41); The invention relates to a plate (42), wherein each group of the connecting strip assembly (41) comprises two connecting rods (5) connected between the main ladder frames (11), and the connecting plate (42) is used to install the concrete ladder plate (2); the connecting frame (12) is provided with a reinforcing rod (6) and an oblique rod (7), the reinforcing rod (6) is connected between the two connecting frames (12), the length direction of the reinforcing rod (6) is the same as the length direction of the connecting rod (5), and the frame plate (3) is supported on the reinforcing rod (6) and the oblique rod (7).

2. The steel structure for precast concrete stairs according to claim 1, characterized in that: The bottom end of the main ladder frame (11) is provided with a supporting protrusion (9), and the supporting protrusion (9) is used to abut against the ground; the fixing plate (13) is located at one end of the connecting frame (12) away from the main ladder frame (11), and the fixing plate (13) is used to be connected to a wall.

3. The steel structure for precast concrete stairs according to claim 2, characterized in that: The fixing plate (13) is provided with a fixing hole, and the fixing hole is used to fix the fixing plate (13) to the wall.

4. The steel structure for precast concrete stairs according to claim 1, characterized in that: A mounting plate (10) is integrally fixed on the fixing plate (13), and a connecting hole is provided on the mounting plate (10).

5. The steel structure for precast concrete stairs according to claim 1, characterized in that: The ladder plate (2) is provided with a positioning groove (14) for accommodating the connecting plate (42). When the connecting plate (42) is accommodated in the positioning groove (14), both ends of the ladder plate (2) abut against the side walls opposite to the main ladder frame (11).

6. The steel structure for precast concrete stairs according to claim 1, characterized in that: The connecting rod (5) is provided with a connecting screw (15), and the connecting screw (15) fixes the connecting plate (42) to the connecting rod (5).

7. The steel structure for precast concrete stairs according to claim 6, characterized in that: The ladder plate (2) comprises a plate body (21) and a reinforcing steel mesh (22) inside the plate body (21).

8. The steel structure for precast concrete stairs according to claim 7, characterized in that: The reinforcing steel mesh (22) comprises a plurality of transverse steel bars (221) and a plurality of longitudinal steel bars (222), and the transverse steel bars (221) and the longitudinal steel bars (222) are welded to each other.

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