Lightweight assembled stair

Abstract

The utility model belongs to the technical field of fabricated building, specifically disclose a kind of lightweight fabricated stair, comprising: several step board, ladder hole is set up on step;Stair section plate, including the straight section of bottom and top and the inclined section of connecting bottom and top, the inclined section of stair section plate Both sides are provided with several installation platforms, and the head and tail of adjacent two installation platforms are connected to constitute continuous ladder structure;Pre-buried bolt is provided on installation platform, for connecting step board;Platform plate, platform plate is provided with two, respectively located the bottom end and top end of stair section plate, and platform plate is fixedly connected with stair section plate.The fabricated stair of the utility model adopts modularization design, and the fabricated stair is split into step board, stair section plate, platform plate and other independent precast parts, reduces the material consumption and dead weight of overall structure, reduces the load requirement of hoisting equipment, facilitates construction hoisting operation, effectively avoids the construction safety risk caused by weight overrun.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building technology, and specifically relates to a lightweight prefabricated staircase. Background Technology

[0002] The rapid development of prefabricated construction has driven continuous innovation in building materials and construction technologies. This is particularly evident in the design of traditional prefabricated staircases, a crucial component where traditional designs have significant limitations. Specifically, most traditional prefabricated staircases employ a monolithic design, using ordinary cast concrete. While this design meets basic staircase usage requirements, in practical applications, the large length and width of the staircases, coupled with the high density of concrete, result in very heavy prefabricated staircases. This places high demands on lifting machinery, creating difficulties during actual construction, as the weight of the staircases often approaches or exceeds the safe lifting capacity of tower cranes, thus increasing construction safety risks. Utility Model Content

[0003] The purpose of this invention is to overcome the defects in the existing technology and provide a lightweight prefabricated staircase.

[0004] This utility model provides a lightweight prefabricated staircase, comprising:

[0005] Several step plates, with stepped holes formed on the step plates;

[0006] The stair tread is an inclined staircase structure, comprising a straight section at the bottom and top, and an inclined section connecting the bottom and top. Several mounting platforms are provided on both sides of the inclined section of the stair tread, and two adjacent mounting platforms are connected end to end to form a continuous staircase structure. Pre-embedded bolts are provided on the mounting platforms for connecting the treads.

[0007] The platform plate consists of two pieces, located at the bottom and top of the ladder section plate respectively, and the platform plate is fixedly connected to the ladder section plate.

[0008] A further embodiment is that the stepped holes are located at both ends of the tread surface of the step plate, corresponding to the positions of the pre-embedded bolts.

[0009] A further embodiment is that the tread surface of the step plate is connected to the mounting platform by pre-embedded bolts.

[0010] A further proposed solution is that the height of the mounting platform at the bottom of the stair slab is higher than the height of the middle mounting platform; and the height of the mounting platform at the top of the stair slab is lower than the height of the middle mounting platform.

[0011] A further proposed solution is that the riser height of the bottom tread of the stair tread is higher than that of the middle tread; and the riser height of the top tread of the stair tread is lower than that of the middle tread.

[0012] A further embodiment is that the platform plate has a groove on the side near the ladder plate, the straight section of the ladder plate extends into the groove, and the straight section is connected to the platform plate by bolts.

[0013] A further solution is to fill the gaps between the step treads and the stair slabs, as well as the gaps between the stair slabs and the platform slabs, with mortar.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model's prefabricated staircase adopts a modular design, disassembling the staircase into independent prefabricated components such as treads, stair treads, and platform slabs. This reduces the overall material usage and weight of the structure, lowers the load requirements on hoisting equipment, facilitates construction and hoisting operations, and effectively avoids construction safety risks caused by exceeding weight limits. The continuous staircase structure and rapid assembly and disassembly of the treads improve construction efficiency and reduce the complexity of on-site operations. Attached Figure Description

[0016] The following figures are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0017] Figure 1 : A schematic diagram of the structure of this utility model;

[0018] Figure 2 : Schematic diagram of the connection between the stair slab and the platform slab;

[0019] Figure 3 : Connection structure diagram of stair slab and platform slab;

[0020] Figure 4 : Schematic diagram of the connection between stair treads and step treads;

[0021] Figure 5 : This utility model is assembled and in a complete state.

[0022] In the diagram, 1. Step plate; 2. Step hole; 3. Stair section plate; 4. Embedded bolt; 5. Cylindrical hole; 6. Platform plate; 7. Anchor head; 8. Platform plate embedded bolt; 9. Nut; 10. Washer. Detailed Implementation

[0023] To make the objectives, technical solutions, design methods, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this utility model.

[0024] like Figure 1 and Figure 2 As shown, this utility model provides a lightweight prefabricated staircase, comprising:

[0025] Several step plates 1, with stepped holes 2 opened on the step plates 1, the stepped holes 2 being located at both ends of the tread surface of the step plates 1;

[0026] The stair tread 3 is an inclined staircase structure, including straight sections at the bottom and top and an inclined section connecting the bottom and top. Several mounting platforms are provided on both sides of the inclined section of the stair tread 3, and two adjacent mounting platforms are connected end to end to form a continuous staircase structure. Pre-embedded bolts 4 are provided on the mounting platforms for connecting the step 1. Specifically, in this embodiment, the tread surface of the step 1 is connected to the mounting platform by the pre-embedded bolts 4.

[0027] Platform plate 6, two of which are provided, located at the bottom and top of the ladder plate 3 respectively. A groove is provided on the side of the platform plate 6 near the ladder plate 3. The straight section of the ladder plate 3 extends into the groove and is connected to the platform plate 6 by bolts 8.

[0028] To accommodate the transition between the staircase and the floor, in this embodiment, the mounting platform at the bottom of the stair tread 3 is higher than the middle mounting platform; the mounting platform at the top of the stair tread 3 is lower than the middle mounting platform. Correspondingly, the riser height of the tread 1 at the bottom of the stair tread 3 is higher than the riser height of the middle tread 1; the riser height of the tread 1 at the top of the stair tread 3 is lower than the riser height of the middle tread 1. In other words, the height from the ground to the first tread 1 is higher than that of the treads at the non-ends, ensuring a more stable and smooth connection between the staircase and the ground or lower floor slab. This also considers that people may slightly lift their feet when starting to climb the stairs, providing a natural starting point. Conversely, the distance from the second-to-last tread 1 to the top platform or floor slab is shorter. This is mainly to facilitate direct access from the staircase to the top floor, avoiding inconvenience or potential safety hazards caused by an excessively high last step. The lower riser height helps achieve a seamless connection between the top of the staircase and the floor slab, making the entire staircase more comfortable and safer to use.

[0029] In this embodiment, mortar is filled in the connection gap between the step plate 1 and the stair section plate 3, as well as the connection gap between the stair section plate 3 and the platform plate 6.

[0030] like Figure 3-5 In this invention, during assembly, the lifting ring of the hoisting equipment is connected to the embedded nut pre-embedded in the stair section 3 for hoisting to the designated position. Then, the cylindrical holes 5 reserved in the straight section of the stair section 3 are passed through the pre-embedded bolts 8 in the groove of the platform plate 6. The pre-embedded bolts 8 are fixed to the anchor heads 7 pre-embedded in the platform plate 6. Then, corresponding washers 10 are placed, and the pre-embedded bolts 8 are tightened with nuts 9. Finally, the gaps are sealed with mortar to complete the assembly of the stair section 3 and the platform plate 6. When assembling the step plate 1 and the stair section 3, the pre-embedded bolts 4 corresponding to the two step holes 2 of the step plate 1 are first passed through the two mounting platforms on the same floor, so that the tread surface of the step plate 1 is connected to the mounting platform through the pre-embedded bolts 4.

[0031] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A lightweight prefabricated staircase, characterized in that, include: Several step plates (1) are provided, and stepped holes (2) are provided on the step plates (1); The stair tread (3) is an inclined staircase structure, including a straight section at the bottom and top and an inclined section connecting the bottom and top. Several mounting platforms are provided on both sides of the inclined section of the stair tread (3), and two adjacent mounting platforms are connected end to end to form a continuous staircase structure. Pre-embedded bolts (4) are provided on the mounting platforms for connecting the step plate (1). Platform plate (6), two platform plates (6) are provided, located at the bottom and top of the ladder plate (3) respectively, and the platform plate (6) is fixedly connected to the ladder plate (3).

2. The lightweight prefabricated staircase according to claim 1, characterized in that, The stepped holes (2) are located at both ends of the tread surface of the step plate (1) and are adapted to the position of the pre-embedded bolts (4).

3. A lightweight prefabricated staircase according to claim 2, characterized in that, The tread surface of the step plate (1) is connected to the mounting platform by pre-embedded bolts (4).

4. A lightweight prefabricated staircase according to claim 1, characterized in that, The height of the mounting platform at the bottom of the stair section (3) is higher than that of the middle mounting platform; the height of the mounting platform at the top of the stair section (3) is lower than that of the middle mounting platform.

5. A lightweight prefabricated staircase according to claim 4, characterized in that, The riser height of the tread (1) at the bottom of the stair tread (3) is higher than that of the middle tread (1); the riser height of the tread (1) at the top of the stair tread (3) is lower than that of the middle tread (1).

6. A lightweight prefabricated staircase according to claim 1, characterized in that, The platform plate (6) has a groove on the side near the ladder plate (3), and the straight section of the ladder plate (3) extends into the groove, and the straight section is connected to the platform plate (6) by bolts (8).

7. A lightweight prefabricated staircase according to claim 1, characterized in that, Mortar is filled in the gaps between the step plate (1) and the stair section plate (3) and between the stair section plate (3) and the platform plate (6).

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