Fabricated stair shaping protection device
By designing a prefabricated staircase standardized protective device, and utilizing a combined support frame and threaded fixing method, the safety hazards caused by falling objects in the stairwell during construction were solved, achieving rapid installation and effective protection, and ensuring construction safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY SECOND BUREAU GROUP (XI AN) ENGINEERING CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-08
AI Technical Summary
During the construction of prefabricated buildings, there is a risk of construction materials or objects falling into stairwells, posing a safety hazard to construction workers at adjacent openings.
A prefabricated staircase standardized safety device was designed, including a combined support frame consisting of four columns and two crossbars. Safety nets are installed on the columns and fixed by threaded caps and pre-embedded bolts. The crossbars are matched with snap-fit holes. The safety nets are woven from steel wire ropes, enabling rapid installation and fixation.
It effectively prevents construction materials or objects from falling, avoids safety accidents, and is simple and quick to operate, thus improving construction safety.
Smart Images

Figure CN224213826U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a standardized protective device for prefabricated staircases. Background Technology
[0002] Prefabricated buildings are one of the important directions for the development of building structures in my country. They play an irreplaceable role in promoting energy conservation, emission reduction and consumption reduction in the construction field, improving housing quality and standards, promoting stable economic growth, driving technological progress and improving production efficiency. At the same time, they are conducive to improving and ensuring the quality of building projects.
[0003] Currently, prefabricated staircases, as one of the prefabricated design components, are involved in the vast majority of prefabricated buildings. However, prefabricated staircases are generally constructed after the main building floors. During the construction process, construction materials or objects may fall into the stairwell, causing safety hazards to construction workers at the openings adjacent to the staircase. Therefore, we propose a standardized protective device for prefabricated staircases. Utility Model Content
[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.
[0005] Specifically, the technical problem to be solved by this utility model is to provide a prefabricated staircase standardized protective device to solve the technical problem that construction materials or objects may fall into the stairwell during the construction process, causing safety hazards to construction workers at the openings adjacent to the staircase.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:
[0007] A standardized protective device for prefabricated staircases includes a prefabricated building stairwell, wherein a modular support frame is detachably installed at the opening of the prefabricated building stairwell, and the modular support frame consists of four columns and two crossbars.
[0008] A safety net is installed on the column, and the safety net is located above the opening of the stairwell in the prefabricated building. The safety net consists of a protective net frame and a protective net. A threaded cap is installed on the column, and the safety net is installed on the column through the threaded cap.
[0009] As an improved technical solution, the prefabricated building stairwell is pre-embedded with pre-embedded bolts, and the bottom of the column is rotatably installed with a threaded cylinder corresponding to the pre-embedded bolts. The threaded cylinder is adapted to the pre-embedded bolts, and the column is disassembled and installed on the prefabricated building stairwell through the threaded cylinder and the pre-embedded bolts.
[0010] As an improved technical solution, the column is provided with a snap-fit hole, and both ends of the crossbar have integrally formed snap-fit protrusions corresponding to the snap-fit hole, and the snap-fit protrusions are adapted to the snap-fit hole. The crossbar is installed on the column through the snap-fit protrusions and the snap-fit hole.
[0011] As an improved technical solution, the top of the column has an integrally formed threaded protrusion that is adapted to the threaded cap, and the threaded protrusion and the threaded cap are threadedly connected.
[0012] As an improved technical solution, the protective net frame has through holes at its corners that are adapted to the diameter of the threaded protrusions. The threaded protrusions pass through the through holes, and the protective net frame is installed on the column through the threaded caps, the through holes, and the threaded protrusions.
[0013] As an improved technical solution, the protective net is woven from steel wire rope.
[0014] After adopting the above technical solution, the beneficial effects of this utility model are:
[0015] 1. This utility model involves assembling a protective device onto the stairwell of a prefabricated building and rotating a threaded cylinder. The threaded cylinder moves along the outer surface of the pre-embedded bolt until it is fixed to the pre-embedded bolt. The safety net is located above the opening of the stairwell of the prefabricated building to prevent construction materials or objects from falling, thereby protecting the stairwell opening and preventing safety accidents.
[0016] 2. This utility model assembles a crossbar onto a column, at which point a snap-fit protrusion is snapped into the snap-fit hole. Then, the safety net is assembled onto the column, with the threaded protrusion passing through the through hole and extending outwards. A threaded cap is then used to fix the safety net onto the column. The threaded cap moves along the extended part of the threaded protrusion until the safety net is fixed to the column, thus facilitating the assembly of the protective device and making the operation simple and quick. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0018] Figure 1 This is a schematic diagram of the assembly structure of this utility model.
[0019] Figure 2This is a schematic diagram of the prefabricated building stairwell structure of this utility model.
[0020] Figure 3 This is a schematic diagram of the assembled structure of the protective device of this utility model.
[0021] Figure 4 This is a schematic diagram showing the exploded structure of the column and crossbar of this utility model.
[0022] Figure 5 For the present utility model Figure 4 Enlarged structural diagram at point A in the middle.
[0023] Explanation of reference numerals in the attached figures:
[0024] In the diagram: 1. Stairwell of prefabricated building; 101. Embedded bolt; 2. Column; 201. Threaded cylinder; 202. Snap-fit hole; 203. Threaded protrusion; 3. Crossbar; 301. Snap-fit protrusion; 4. Protective net frame; 401. Through hole; 5. Protective net; 6. Threaded cap. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0027] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.
[0028] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0029] Reference Figures 1-5 A prefabricated staircase standardized protective device is provided. This prefabricated staircase standardized protective device includes a prefabricated building stairwell 1. A combined support frame is detachably installed at the opening of the prefabricated building stairwell 1. The combined support frame consists of four columns 2 and two crossbars 3.
[0030] A safety net is installed on column 2, and the safety net is located above the opening of the stairwell 1 in the prefabricated building. The safety net consists of a protective net frame 4 and a protective net 5. A threaded cap 6 is installed on column 2, and the safety net is installed on column 2 through the threaded cap 6.
[0031] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The prefabricated building stairwell 1 is pre-embedded with pre-embedded bolts 101. The bottom of the column 2 is rotatably installed with a threaded cylinder 201 corresponding to the pre-embedded bolts 101. The threaded cylinder 201 is compatible with the pre-embedded bolts 101. The column 2 is disassembled and installed on the prefabricated building stairwell 1 through the threaded cylinder 201 and the pre-embedded bolts 101, so that the column 2 can be installed on the prefabricated building stairwell 1, and thus it is convenient to install the protective device at the opening of the prefabricated building stairwell 1 for protection.
[0032] Reference Figures 3-5 The column 2 has a snap-fit hole 202. Both ends of the crossbar 3 have an integrally formed snap-fit protrusion 301 that corresponds to the snap-fit hole 202. The snap-fit protrusion 301 is adapted to the snap-fit hole 202. The crossbar 3 is installed on the column 2 through the snap-fit protrusion 301 and the snap-fit hole 202 so that the crossbar 3 can be assembled onto the column 2.
[0033] Reference Figures 3-5 The top of the column 2 has an integrally formed threaded protrusion 203 that is adapted to the threaded cap 6, and the threaded protrusion 203 is threadedly connected to the threaded cap 6 so that the threaded cap 6 can be installed on the threaded protrusion 203.
[0034] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 The protective net frame 4 has through holes 401 at its corners that are compatible with the diameter of the threaded protrusion 203. The threaded protrusion 203 passes through the through holes 401. The protective net frame 4 is installed on the column 2 through the threaded cap 6, the through holes 401 and the threaded protrusion 203, so that the safety net can be installed on the column 2 using the threaded cap 6.
[0035] Reference Figure 1 , Figure 3 and Figure 4 The protective net 5 is woven from steel wire rope to improve its impact resistance.
[0036] In practical use, the crossbar 3 is assembled onto the column 2, at which point the snap-fit protrusion 301 is snapped into the snap-fit hole 202. Then, the column 2 is assembled onto the prefabricated building stairwell 1. At this time, the threaded cylinder 201 is rotated, and the threaded cylinder 201 moves along the outer surface of the pre-embedded bolt 101 until it is fixed onto the pre-embedded bolt 101. Then, the safety net is assembled onto the column 2, and the safety net is fixed onto the column 2 using the threaded cap 6. At this time, the threaded protrusion 203 passes through the through hole 401 and protrudes, and the threaded cap 6 moves along the protruding part of the threaded protrusion 203 until the safety net is fixed onto the column 2. This makes it convenient to assemble the protective device, and the operation is simple and quick. At the same time, it can protect the stairwell opening and thus prevent safety accidents.
[0037] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.
Claims
1. A standardized protective device for prefabricated staircases, comprising a prefabricated building stairwell (1), characterized in that: The opening of the prefabricated building stairwell (1) is equipped with a modular support frame that is disassembled and installed. The modular support frame consists of four columns (2) and two crossbars (3). A safety net is installed on the column (2), and the safety net is located above the opening of the stairwell (1) of the prefabricated building. The safety net consists of a protective net frame (4) and a protective net (5). A threaded cap (6) is installed on the column (2), and the safety net is installed on the column (2) through the threaded cap (6).
2. The prefabricated staircase standardized protective device according to claim 1, characterized in that: The prefabricated building stairwell (1) is pre-embedded with pre-embedded bolts (101), and the bottom of the column (2) is rotatably installed with a threaded cylinder (201) corresponding to the pre-embedded bolts (101), and the threaded cylinder (201) is adapted to the pre-embedded bolts (101). The column (2) is disassembled and installed on the prefabricated building stairwell (1) through the threaded cylinder (201) and the pre-embedded bolts (101).
3. The prefabricated staircase standardized protective device according to claim 1, characterized in that: The column (2) is provided with a snap-fit hole (202), and both ends of the crossbar (3) are integrally formed with snap-fit protrusions (301) corresponding to the snap-fit hole (202). The snap-fit protrusions (301) are adapted to the snap-fit hole (202), and the crossbar (3) is installed on the column (2) through the snap-fit protrusions (301) and the snap-fit hole (202).
4. The prefabricated staircase standardized protective device according to claim 1, characterized in that: The top of the column (2) has an integrally formed threaded protrusion (203) that is adapted to the threaded cap (6), and the threaded protrusion (203) is threadedly connected to the threaded cap (6).
5. The prefabricated staircase standardized protective device according to claim 4, characterized in that: The protective net frame (4) has through holes (401) at its corners that are compatible with the diameter of the threaded protrusion (203). The threaded protrusion (203) passes through the through hole (401). The protective net frame (4) is installed on the column (2) through the threaded cap (6), the through hole (401) and the threaded protrusion (203).
6. The prefabricated staircase standardized protective device according to claim 1, characterized in that: The protective net (5) is woven from steel wire rope.