Fabricated shaped safety protection stair
By setting up guardrail placement holes and flipping grooves inside prefabricated stairs, and utilizing sliding flipping devices and fixing devices, the problem of the lack of guardrails in prefabricated stairs is solved, realizing convenient installation and storage of guardrails, and improving safety and transportation convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST CONSTR ENG COMPANY LTD OF CHINA CONSTR SECOND ENG BUREAU
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-01
AI Technical Summary
Existing prefabricated staircases lack integrated safety railings. Purchased safety railings are not compatible with the staircases, and custom-made safety railings are inconvenient to install and transport, posing safety hazards.
A prefabricated, standardized safety staircase was designed, which includes guardrail placement holes and flip grooves. The horizontal and vertical conversion of the guardrail is achieved by using a sliding flip device and a fixing device. The guardrail is stably installed through a structure such as a slide rail, a flip seat, a hemispherical slider, and T-bolts.
It enables convenient installation and storage of guardrails, avoids safety hazards, and improves the safety and transportation convenience of prefabricated stairs.
Smart Images

Figure CN224187077U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated building technology, specifically a prefabricated standardized safety protection staircase. Background Technology
[0002] With the development of the construction industry, prefabricated buildings have gradually gained widespread acceptance. Prefabricated buildings refer to buildings where a large amount of on-site work in traditional construction methods is transferred to factories. Building components and accessories are manufactured in factories, transported to the construction site, and assembled on-site using reliable connection methods.
[0003] Compared to cast-in-place staircases, prefabricated staircases eliminate the need for formwork and supports, saving time on concrete curing and significantly reducing construction time. However, existing prefabricated staircases lack integrated safety railings, increasing the risk of falls and posing a safety hazard. Purchased safety railings often have mismatched spacing with the different treads of the prefabricated staircase, and custom-made railings typically require drilling into the staircase for installation, making disassembly inconvenient. Furthermore, the separate installation of prefabricated staircases and safety railings presents transportation challenges. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a prefabricated, standardized safety protection staircase.
[0005] To solve the above-mentioned technical problems, this utility model provides a prefabricated standardized safety protection staircase, including a prefabricated staircase body. The prefabricated staircase body is provided with multiple guardrail placement holes. A flip groove connected to the guardrail placement holes is provided on one side of the top of the prefabricated staircase body. The guardrail is movably installed in the guardrail placement holes through a sliding flip device. The guardrail is movably engaged with the flip groove. The sliding flip device is provided with a fixing device that cooperates with the guardrail.
[0006] Furthermore, the sliding flipping device includes a slide rail fixedly installed at the bottom of the guardrail placement hole, and semi-circular slide grooves are provided on both sides of the slide rail. Two flipping seats are symmetrically arranged at the bottom of the outer side of the guardrail and fixedly connected to it. A flipping shaft is provided on the side of the two flipping seats that are close to each other. A hemispherical slider is rotatably installed on the flipping shaft, and the hemispherical slider is movably installed in the semi-circular slide groove.
[0007] Furthermore, a T-shaped groove is provided on the top of the outer side of the slide rail, and a T-shaped bolt is slidably disposed in the T-shaped groove. The threaded part of the T-shaped bolt passes through the T-shaped groove and extends to the top of the slide rail. A fixing nut that engages with the threaded part of the T-shaped bolt is provided on the threaded part of the T-shaped bolt.
[0008] Furthermore, a decorative ball is provided at the top of the guardrail.
[0009] In summary, this utility model has the following beneficial effects:
[0010] In its stored state, the guardrail is horizontally positioned within the guardrail placement hole via a sliding flipping device, and a fixing device secures the guardrail within the placement hole to prevent it from slipping out. In use, the fixing device is released, and the guardrail is slid outward along the sliding flipping device. When the rear of the guardrail moves to the placement hole below the flipping groove, the top of the guardrail is flipped upward, making the guardrail vertical and moving it into the flipping groove. The fixing device then secures the guardrail within the flipping groove, preventing it from moving or flipping. Attached Figure Description
[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0012] Figure 1 This is a perspective view of the prefabricated, standardized safety protection staircase of this utility model in use.
[0013] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle;
[0014] Figure 3 This is a side view of a prefabricated, standardized safety protection staircase of this utility model in use.
[0015] Figure 4 This is a side view of the assembled, standardized safety protection staircase of this utility model in its stored state.
[0016] In the diagram: 1. Prefabricated staircase body; 2. Guardrail placement hole; 3. Sliding flip device; 31. Slide rail; 32. Semi-circular slide groove; 33. Flip seat; 34. Flip shaft; 35. Hemispherical slider; 4. Guardrail; 5. Flip groove; 6. Pressing device; 61. T-slot; 62. T-bolt; 63. Fixing nut; 7. Decorative ball. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0018] The present invention will be further described below with reference to the accompanying drawings:
[0019] like Figures 1-4 As shown, a prefabricated standardized safety protection staircase includes a prefabricated staircase body 1. The prefabricated staircase body 1 is provided with multiple guardrail placement holes 2. A flip groove 5 connected to the guardrail placement holes 2 is provided on one side of the top of the prefabricated staircase body 1. Guardrails 4 are movably installed in the guardrail placement holes 2 through a sliding flip device 3. The guardrails 4 are movably engaged with the flip groove 5. A fixing device 6 that cooperates with the guardrails 4 is provided on the sliding flip device 3.
[0020] In this embodiment, the guardrail placement hole 2 is a square blind hole opened from the outer side of the prefabricated stair body 1, and the outer side of the top surface of the prefabricated stair body 1 is provided with a flip groove 5 that communicates with the guardrail placement hole 2.
[0021] When stored, the guardrail 4 is horizontally positioned in the guardrail placement hole 2 via the sliding flipping device 3, and the fixing device 6 fixes the guardrail 4 in the guardrail placement hole 2 to prevent it from slipping out of the guardrail placement hole 2.
[0022] In use, loosen the fixing device 6 and slide the guardrail 4 outward along the sliding flipping device 3. When the rear of the guardrail 4 moves to the guardrail placement hole 2 below the flipping groove 5, flip the top of the guardrail 4 upward, making the guardrail 4 vertical and moving it into the flipping groove 5. The fixing device 6 fixes the guardrail 4 in the flipping groove 5 to prevent it from moving or flipping.
[0023] The sliding flipping device 3 includes a slide rail 31 fixedly installed at the bottom of the guardrail placement hole 2. Both sides of the slide rail 31 are provided with semi-circular slide grooves 32. Two flipping seats 33 are symmetrically arranged at the bottom of the outer side of the guardrail 4 and fixedly connected to it. A flipping shaft 34 is provided on the side of the two flipping seats 33 that are close to each other. A hemispherical slider 35 is rotatably installed on the flipping shaft 34. The hemispherical slider 35 is movably installed in the semi-circular slide groove 32.
[0024] In this embodiment, two flip seats 33 are symmetrically arranged at the bottom of the outer side of the guardrail 4 and are fixedly connected thereto. A hemispherical slider 35 is rotatably arranged on the inner side of the flip seat 33 through the flip shaft 34. The hemispherical slider 35 is arranged in the semi-circular groove 32 and can slide and rotate in the semi-circular groove 32.
[0025] In the storage state, with the cooperation of the hemispherical slider 35 and the semi-circular slide groove 32, the flip seat 33 flips, the guardrail 4 is set horizontally with the slide rail 31, the bottom of the guardrail 4 slides to the rear of the slide rail 31, and the guardrail 4 is stored in the guardrail placement hole 2.
[0026] In use, with the cooperation of the hemispherical slider 35 and the semi-circular slide groove 32, the bottom of the guardrail 4 slides to the front of the slide rail 31, the flip seat 33 flips, the guardrail 4 is vertically set with the slide rail 31, and the guardrail 4 moves into the flip groove 5.
[0027] A T-shaped groove 61 is provided on the top of the outer side of the slide rail 31. A T-shaped bolt 62 is slidably disposed in the T-shaped groove 61. The threaded part of the T-shaped bolt 62 passes through the T-shaped groove 61 and extends to the top of the slide rail 31. A fixing nut 63 that mates with the threaded part of the T-shaped bolt 62 is provided on the threaded part of the T-shaped bolt 62.
[0028] In this embodiment, the T-bolt 62 can slide along the T-groove 61 and can be removed from the T-groove 61. The fixing nut 63 engages with the threaded portion of the T-bolt 62, thereby fixing the T-bolt 62 to the T-groove 61.
[0029] In the stowed state, the threaded portion of the fixing nut 63 engages with the threaded portion of the T-bolt 62, securing the T-bolt 62 to the T-slot 61. The fixing nut 63 and the T-bolt 62 block the outer side of the top of the horizontally positioned guardrail 4, preventing it from slipping out of the guardrail placement hole 2.
[0030] In use, the fixing nut 63 engages with the threaded portion of the T-bolt 62, securing the T-bolt 62 to the T-slot 61. The fixing nut 63 and the T-bolt 62 are positioned on the outside of the vertically mounted bottom of the guardrail 4, preventing it from moving or flipping out of the tilting groove 5.
[0031] A decorative ball 7 is installed at the top of the guardrail 4.
[0032] In this embodiment, the decorative ball 7 serves to decorate the guardrail 4. Preferably, adjacent guardrails 4 can be connected by flexible ropes or protective chains, which serves both decorative and protective purposes.
[0033] In summary, this utility model is not limited to the specific embodiments described above. Those skilled in the art can make various modifications and alterations without departing from the spirit and scope of this utility model. The scope of protection of this utility model should be determined by the claims of this utility model.
[0034] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.
[0035] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.
Claims
1. A prefabricated, standardized safety protection staircase, characterized in that, The system includes a prefabricated staircase body (1), which has multiple guardrail placement holes (2) and a flip groove (5) connected to the guardrail placement holes (2) on one side of the top of the prefabricated staircase body (1). Guardrails (4) are movably installed in the guardrail placement holes (2) through a sliding flip device (3). The guardrails (4) are movably engaged with the flip groove (5). A fixing device (6) is provided on the sliding flip device (3) to cooperate with the guardrails (4).
2. The prefabricated, standardized safety staircase as described in claim 1, characterized in that, The sliding flipping device (3) includes a slide rail (31) fixedly installed at the bottom of the guardrail placement hole (2). Both sides of the slide rail (31) are provided with semi-circular grooves (32). Two flipping seats (33) are symmetrically arranged at the bottom of the outer side of the guardrail (4) and fixedly connected to it. A flipping shaft (34) is provided on the side of the two flipping seats (33) that are close to each other. A hemispherical slider (35) is rotatably arranged on the flipping shaft (34). The hemispherical slider (35) is movably arranged in the semi-circular groove (32).
3. The prefabricated, standardized safety staircase as described in claim 2, characterized in that, A T-shaped groove (61) is provided on the top of the outer side of the slide rail (31). A T-shaped bolt (62) is slidably disposed in the T-shaped groove (61). The threaded part of the T-shaped bolt (62) passes through the T-shaped groove (61) and extends to the top of the slide rail (31). A fixing nut (63) that engages with the threaded part of the T-shaped bolt (62) is provided.
4. The prefabricated, standardized safety staircase as described in claim 3, characterized in that, The top of the guardrail (4) is provided with a decorative ball (7).