Fabricated stair

Abstract

The utility model provides an assembly type stair, which belongs to the field of assembly type buildings and comprises stair beams, step bearing structures, temporary steps and permanent steps. Wherein the two ladder beams are mounted on a building main body structure side by side; the plurality of step bearing structures are mounted between the two ladder beams; the plurality of temporary steps are correspondingly and detachably assembled on the step bearing structure during construction, at least the step surfaces of the temporary steps cover and protect the top of the step bearing structure, and the skirting surfaces cover and protect the side part of the step bearing structure; and the plurality of permanent steps replace the temporary steps after the construction of the main body structure is finished and are assembled on the step bearing structure.

Description

Technical Field

[0001] The utility model relates to the field of assembled buildings, in particular to an assembled staircase. Background Art

[0002] In existing prefabricated buildings, stairs are generally made of prefabricated concrete structures or steel stairs. For prefabricated concrete stairs, the heavy weight requires a larger tower crane, the finished product is difficult to protect, the on-site decoration speed is slow, and the degree of standardization is low. For traditional steel structure stairs, the steps are generally made of patterned steel plates. The surface decoration is more troublesome than concrete stairs (it will be seriously contaminated during the construction stage), time-consuming, and the decoration cost is high.

[0003] Therefore, a prefabricated staircase that can serve as a construction staircase during the main construction phase and finally achieve rapid decoration is in urgent need of being proposed. Utility Model Content

[0004] The utility model aims to provide a prefabricated staircase which can be used as a construction staircase in the main construction stage and finally achieve rapid decoration.

[0005] To this end, the utility model provides an assembled staircase, characterized in that it includes:

[0006] Ladder beams, wherein the two ladder beams are installed side by side on the main structure of the building;

[0007] A step load-bearing structure, wherein a plurality of step load-bearing structures are installed between the two ladder beams;

[0008] Temporary steps, multiple temporary steps are detachably mounted on the step load-bearing structure during construction, at least the step surface of the temporary steps covers and protects the top of the step load-bearing structure, and the skirting surface covers and protects the side of the step load-bearing structure;

[0009] Permanent steps, multiple permanent steps replace the temporary steps after the main structure is constructed and are assembled on the step load-bearing structure.

[0010] Preferably, the step load-bearing structure is a channel steel with the notch of the channel steel facing downward; or, the step load-bearing structure is a square ring; the square ring is integrally formed or bent from a metal square tube.

[0011] Preferably, the ladder beam is a steel beam or a precast concrete beam; both ends of the step load-bearing structure are welded to the steel beam or embedded and fixed in the precast concrete beam.

[0012] Preferably, the step load-bearing structure is provided with a mounting hole, and the permanent step is assembled on the step load-bearing structure by means of self-tapping screws / bolts cooperating with the mounting hole.

[0013] Preferably, it also includes a U-shaped buckle for installing the staircase ceiling, the side of the U-shaped buckle is fixed to the square ring, and the staircase ceiling is installed on the U-shaped buckle.

[0014] Preferably, the bottom of the U-shaped clip is implemented as a mounting portion of a stair ceiling, and the bevel angle of the mounting portion is the same as the bevel angle of the ladder beam.

[0015] Preferably, the temporary step is channel-shaped steel, and the side panels of the temporary step extend outward to form an outwardly expanded folded edge, and the temporary step is installed on the step load-bearing structure by buckling the outwardly expanded folded edge.

[0016] Preferably, the permanent step is an L-shaped or U-shaped step; the permanent step is a UHPC step board, a wooden step board or a marble step board.

[0017] Preferably, a handrail mounting groove is further provided on the ladder beam, and a stair handrail is installed on the handrail mounting groove.

[0018] Preferably, the ladder beam is a truss structure; the ladder beam comprises an upper chord, a lower chord and a web; and ends of a plurality of the step load-bearing structures are fixed to the web.

[0019] By adopting the above technical solution, the beneficial effects achieved are:

[0020] This application uses the step load-bearing structure to assemble and install temporary steps and permanent steps before and after construction; the temporary steps are assembled and installed during construction, and the temporary steps can be disassembled after construction to serve as the treads during construction. After the construction is completed, they can be quickly disassembled and reused in the next project, saving materials. Since the step load-bearing structure is well protected by the temporary steps during construction, the step load-bearing structure will not be contaminated by construction after the temporary steps are removed, and the permanent steps can be directly installed with self-tapping screws, realizing the rapid decoration of prefabricated stairs.

[0021] Temporary step structures that can be quickly installed and removed.

[0022] The U-shaped clips can be used to quickly install the ceiling gypsum board, which does not require a special keel.

[0023] The stair treads are all detachable and can be reused in another building. They are recyclable parts and are environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A structural schematic diagram of the utility model is expressed.

[0025] Figure 2 A side view of the present invention is shown.

[0026] Figure 3 The schematic diagram of the structure of the external expansion side of the utility model is expressed.

[0027] Figure 4 A side view of the present invention after permanent steps are installed is shown.

[0028] Figure 5 The utility model expresses the assembly schematic diagram of the permanent step and the step load-bearing structure.

[0029] Figure 6 The utility model expresses the assembly schematic diagram of the stair handrail.

[0030] Figure 7 The installation diagram of the U-shaped buckle in the utility model is expressed.

[0031] Figure 8 A structural schematic diagram of the ladder beam of the utility model is expressed. DETAILED DESCRIPTION

[0032] The following description is given to enable those skilled in the art to implement and use the utility model and incorporate it into specific application contexts. Various modifications, as well as various uses in different applications will be readily apparent to those skilled in the art, and the general principles defined herein are applicable to a wide range of embodiments. Thus, the utility model is not limited to the embodiments given herein, but should be granted the broadest scope consistent with the principles and novel features disclosed herein.

[0033] In the following detailed description, many specific details are set forth to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the practice of the present invention need not be limited to these specific details. In other words, well-known structures and devices are shown in block diagram form without detailed display to avoid obscuring the present invention.

[0034] The reader is reminded of all documents and literature filed simultaneously with this specification and open to public inspection, and the contents of all such documents and literature are incorporated herein by reference. Unless otherwise directly stated, all features disclosed in this specification (including any attached claims, abstracts and drawings) can be replaced by alternative features for achieving the same, equivalent or similar purposes. Therefore, unless otherwise explicitly stated, each feature disclosed is only an example of a group of equivalent or similar features.

[0035] Note that, where used, the symbols left, right, front, back, top, bottom, forward, reverse, clockwise and counterclockwise are used only for convenience and do not imply any specific fixed direction. In fact, they are used to reflect the relative position and / or direction between the various parts of the object. In addition, the terms "first" and "second" are used only for descriptive purposes and should not be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Note that, in the case of use, further, preferably, further and more preferably are simple beginnings for explaining another embodiment based on the previous embodiment, and the content of further, preferably, further or more preferably followed by the above embodiment is combined with the previous embodiment as a complete composition of another embodiment. Several further, preferably, further or more preferably settings followed by the same embodiment can be arbitrarily combined to form another embodiment.

[0038] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Note that the aspects described below in conjunction with the accompanying drawings and specific embodiments are only exemplary and should not be construed as limiting the scope of protection of the present invention.

[0039] In this embodiment, for the convenience of comparison, Figure 1 , Figure 2 In the example, different step load-bearing structures are presented in the same scene for easy and intuitive comparison.

[0040] See also Figures 1 to 8 This embodiment provides an assembled staircase, including a ladder beam 1, a step bearing structure 2, a temporary step 3 and a permanent step 5. Two ladder beams 1 are installed side by side on the main structure of the building; multiple step bearing structures 2 are installed between the two ladder beams 1; multiple temporary steps 3 are detachably assembled on the step bearing structure 2 during construction, and at least the step surface of the temporary step 3 covers and protects the top of the step bearing structure 2, and the skirting surface covers and protects the side of the step bearing structure 2; multiple permanent steps 5 replace the temporary steps 3 after the main structure construction is completed, and are assembled on the step bearing structure 2.

[0041] Furthermore, in this embodiment, the step load-bearing structure 2 provides two implementation modes:

[0042] 1. Please combine Figure 2 and Figure 3 The step load-bearing structure 2 is a channel steel 2B, and the notch of the channel steel 2B faces downward. The ends of the bottom plate and the side plate of the channel steel 2B are fixed to the ladder beam 1;

[0043] 2. Please combine Figure 1 and Figure 5 The step load-bearing structure 2 is a square ring 2A; the square ring 2A is integrally formed or bent from a metal square tube, and both ends of the square ring 2A are fixed to the ladder beam 1.

[0044] The ladder beam 1 is the main structure connecting the floors in this embodiment. The ladder beam 1 can be a steel beam or a precast concrete beam, and the two ends of the step load-bearing structure 2 are welded to the steel beam or embedded and fixed to the precast concrete beam. Because the step load-bearing structure 2 is fixed, it is fixed to the ladder beam 1 for good stability.

[0045] Please combine Figure 1 and Figure 5 In order to facilitate the installation of the permanent step 5, the step bearing structure 2 is provided with a mounting hole 20, and the permanent step 5 is assembled on the step bearing structure 2 by means of self-tapping screws 4 / bolts in conjunction with the mounting hole 20. Specifically, when the step bearing structure 2 is assembled with the permanent step 5 by means of self-tapping screws 4 / bolts, the self-tapping screws 4 / bolts should be driven in from bottom to top and should not be exposed on the surface of the permanent step 5.

[0046] See also Figure 7 After the permanent step 5 is installed, the bottom is in a stepped shape. For the overall aesthetics, a suspended ceiling is usually required. The present embodiment also includes a U-shaped clip 7 for installing a stair ceiling. The side of the U-shaped clip 7 is fixed to the square ring 2A (the step load-bearing structure 2), and the stair ceiling is installed on the U-shaped clip 7. Specifically, the bottom of the U-shaped clip 7 is implemented as a mounting portion 71 for the stair ceiling, and the bevel angle of the mounting portion 71 is the same as the bevel angle of the ladder beam 1. When the ceiling panel (not shown) is installed on the mounting portion 71, the overall angle is consistent with the ladder beam 1.

[0047] Furthermore, if the step load-bearing structure 2 is a channel steel 2B, the side of the channel steel 2B can be directly extended inward to form an installation fold, which can also facilitate the installation of the stair ceiling. Figure 2 It can be concluded.

[0048] Please combine Figure 2 and Figure 3 As a protective step during construction, the temporary step 3 is preferably a channel steel, and the side plate of the temporary step 3 extends outward to form an outward folding edge 31, and the temporary step 3 is snap-fitted to the step load-bearing structure 2 through the outward folding edge 31. Whether the step load-bearing structure 2 is a square tube or a channel steel structure, the outward folding edge 31 is aligned with both sides of the step load-bearing structure 2, and the temporary step 3 is snapped in by pressing downward. Furthermore, the temporary step can also be made of cheaper plastic products.

[0049] Preferably, please combine Figure 2 , Figure 4 and Figure 5, the permanent step 5 is L-shaped or U-shaped; in terms of materials, the permanent step 5 uses UHPC step board, wooden step board or marble step board. In the case of L-shaped permanent step 5, one side is defined as the skirting surface and the other side is defined as the stepping surface.

[0050] See also Figure 7 In order to better install protective measures, a handrail installation groove 11 is also provided on the ladder beam 1, and a stair handrail 6 is installed on the handrail installation groove 11. The handrail installation groove 11 is located on the top surface of the ladder beam 1. The stair handrail 6 can be a glass handrail, which can be directly inserted into the handrail installation groove 11. The above ladder beam provides a steel plate structure or a prefabricated concrete structure. In order to save materials, facilitate installation and transportation, and lighten the structure itself. As a preferred implementation of this embodiment, Figure 8 As shown, the ladder beam is a truss structure; the ladder beam includes an upper chord 101, a lower chord 102 and a web 12; the ends 21 of multiple step load-bearing structures are fixed to the web 12. Preferably, when the step load-bearing structure is a square ring, the web 12 connected to the end thereof is implemented as its end 21, forming a part of the square ring. Among them, the number of webs 12 is multiple, and preferably, the web 12 used for supporting the installation of the step load-bearing structure is implemented as a horizontal web, which is convenient for the flatness of the overall step.

[0051] The beneficial effects of this embodiment are:

[0052] The present application assembles and installs temporary steps 3 and permanent steps 5 before and after the construction of the step load-bearing structure 2; the temporary steps 3 are assembled and installed during construction, and the temporary steps 3 can be disassembled after construction to serve as the tread during construction. After the construction is completed, they can be quickly disassembled and reused in the next project, saving materials. Since the step load-bearing structure 2 is well protected by the temporary steps 3 during construction, the step load-bearing structure 2 will not be polluted by the construction after the temporary steps 3 are disassembled, and the permanent steps 5 can be directly installed with self-tapping screws, realizing the rapid decoration of the prefabricated staircase.

[0053] A temporary step 3 structure that can be quickly installed and removed.

[0054] The U-shaped clip 7 can be used to quickly install the suspended ceiling gypsum board, and the suspended ceiling gypsum board does not require a special keel.

[0055] The stair treads are all detachable and can be reused in another building. They are recyclable parts and are environmentally friendly.

[0056] The ladder beam adopts a truss structure, which is very economical, lighter and can be installed manually.

[0057] The ladder beam of the truss structure has better lateral stiffness than the steel plate.

[0058] The ladder beams of the truss structure have thin walls, and self-tapping screws can be driven directly into them, making it convenient to directly seal the cement fiberboard during decoration.

[0059] Furthermore, the utility model is described in detail above in conjunction with the embodiments of the drawings, and a person skilled in the art can make various variations of the utility model according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the utility model, and the scope of protection of the utility model shall be defined by the scope of the attached claims.

Claims

1. Assembled staircase, characterized in that: include: Ladder beams, wherein the two ladder beams are installed side by side on the main structure of the building; A step load-bearing structure, wherein a plurality of step load-bearing structures are installed between the two ladder beams; Temporary steps, multiple temporary steps are detachably mounted on the step load-bearing structure during construction, at least the step surface of the temporary steps covers and protects the top of the step load-bearing structure, and the skirting surface covers and protects the side of the step load-bearing structure; Permanent steps, multiple permanent steps replace the temporary steps after the main structure is constructed and are assembled on the step load-bearing structure.

2. The assembled staircase according to claim 1, characterized in that: The step load-bearing structure is a channel steel, and the channel steel has a notch facing downward; or, the step load-bearing structure is a square ring; the square ring is integrally formed or bent from a metal square tube.

3. The assembled staircase according to claim 2, characterized in that: The ladder beam is a steel beam or a precast concrete beam; both ends of the step load-bearing structure are welded to the steel beam or embedded and fixed in the precast concrete beam.

4. The assembled staircase according to claim 2, characterized in that: The step load-bearing structure is provided with a mounting hole, and the permanent step is assembled on the step load-bearing structure by means of self-tapping screws / bolts cooperating with the mounting hole.

5. The assembled staircase according to claim 4, characterized in that: It also includes a U-shaped buckle for installing the staircase ceiling, the side of the U-shaped buckle is fixed to the square ring, and the staircase ceiling is installed on the U-shaped buckle.

6. The assembled staircase according to claim 5, characterized in that: The bottom of the U-shaped clip is implemented as a mounting portion of a stair ceiling, and the bevel angle of the mounting portion is the same as the bevel angle of the ladder beam.

7. The assembled staircase according to claim 2, characterized in that: The temporary step is a channel steel, and the side panels of the temporary step extend outward to form an outwardly expanded folded edge. The temporary step is installed on the step load-bearing structure through the outwardly expanded folded edge buckle.

8. The assembled staircase according to claim 1, characterized in that: The permanent step is an L-shaped or U-shaped step; the permanent step is a UHPC step board, a wooden step board or a marble step board.

9. The assembled staircase according to claim 1, characterized in that: A handrail mounting groove is also provided on the ladder beam, and a stair handrail is installed on the handrail mounting groove.

10. The assembled staircase according to claim 1, characterized in that: The ladder beam is a truss structure; the ladder beam comprises an upper chord, a lower chord and a web; and ends of a plurality of step load-bearing structures are fixed to the web.

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