A hole and edge protection fence convenient to assemble and disassemble
By using a single-piece fixed guardrail and a connecting screw and nut structure, the problems of inconvenience in assembling and disassembling guardrails at openings and edges during construction and the resulting safety hazards are solved. This allows for flexible combination and multiple reuses, improving construction safety and economic benefits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN NO 2 ENG
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-21
AI Technical Summary
In existing building construction, there is a lack of standardized dimensions for openings and edge guardrails, making installation and removal inconvenient and posing safety hazards during construction. It is also difficult to achieve flexible assembly and disassembly and multiple reuses.
The railing adopts a single-piece fixed guardrail and a connecting screw and nut structure. It is connected to the building by opening holes at both ends and the bottom of the railing. The connecting screw and nut enable flexible combination and fixation of the railing. Combined with U-shaped connectors, it can realize multiple assembly methods to meet the requirements of different opening sizes.
It enables flexible assembly and disassembly of guardrails, adapting to different opening sizes, avoiding mid-construction disassembly that could affect construction safety, and the simple connectors can be reused multiple times, saving costs.
Smart Images

Figure CN224532302U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of construction safety technology, specifically to a protective railing for openings and edges that is easy to assemble and disassemble. Background Technology
[0002] Currently, the safety protection of openings and edges during building construction is of paramount importance, relating to life and property safety. Various construction projects use a wide variety of materials for openings and edges, resulting in several drawbacks: guardrails lack standardized dimensions, installation and removal are cumbersome, and temporary removal during subsequent construction phases often fails to promptly restore the protection, posing significant safety hazards. Therefore, there is an urgent need to develop a type of opening and edge protection railing that is standardized in shape, easy to manufacture and install flexibly, has simple connectors, can be disassembled and reused multiple times, saves costs, and is easy to promote. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a guardrail for openings and edges that can be manufactured in a factory, is easy and flexible to assemble and disassemble, can achieve safe and reliable protection of openings and edges, is easy to assemble and disassemble, and can be reused multiple times.
[0004] The technical problem to be solved by this utility model is to provide a type of opening and edge protection railing that can be factory-made, is easy and flexible to assemble and disassemble, and whose opening protection dimensions can be arbitrarily combined, solving the problem of difficulty in installation due to the opening not conforming to the modular size of the standard guardrail. At the same time, the connecting parts are simple and inexpensive, and the connection points do not need to be treated after installation. Ultimately, it achieves safe and reliable opening and edge protection, is easy to assemble and disassemble, and can be reused multiple times.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a protective railing for openings and edges that is easy to install and disassemble, comprising a single-piece shaped protective railing, connecting screws, and connecting nuts. Holes for installing connecting screws are respectively opened at the top and bottom of both ends of the single-piece shaped protective railing. The connecting screws are installed in these holes and connected to the main structure of the building. The connecting screws are fixedly connected to the single-piece shaped protective railing by tightening the connecting nuts on both sides. Holes for installing connecting screws are respectively opened at the left and right bottom of the single-piece shaped protective railing. The connecting screws are installed in these holes and connected to the main structure of the building. The connecting screws are fixedly connected to the single-piece shaped protective railing by tightening the connecting nuts on both sides.
[0006] Furthermore, the single-piece fixed guardrail is welded together from an upper square steel pipe, a lower square steel pipe, and vertical square steel pipes spaced apart between the upper and lower square steel pipes. The vertical square steel pipes are spaced 150mm apart, and the overall structure is rectangular.
[0007] Furthermore, the connecting screw is a 14mm diameter screw with a continuous thread length; the horizontal connecting screw is 250mm long, the bottom connecting screw is 200mm long, and each connecting screw is equipped with two connecting nuts.
[0008] Furthermore, the holes for installing connecting screws at the top and bottom ends of the single-piece shaped guardrail are symmetrically arranged at the top and bottom 1 / 4 of the length; the holes for installing connecting screws at the bottom left and right ends of the single-piece shaped guardrail are symmetrically arranged at a distance of 250mm from the frame; the size of the hole for installing the connecting screw is 2mm larger than the diameter of the connecting screw.
[0009] Furthermore, the single-piece shaped guardrail consists of two or more pieces, with adjacent single-piece shaped guardrails close together and located in a straight line. A connecting screw is installed between the two pieces, and the connecting screw is fixedly connected to the single-piece shaped guardrail by tightening the connecting nuts on both sides.
[0010] Furthermore, the single-piece shaped guardrail consists of two or more pieces, with adjacent single-piece shaped guardrails overlapping. A U-shaped connector is installed at the overlapping part, and the connecting screw passes through the U-shaped connector and the outer single-piece shaped guardrail. The connecting screw is fixedly connected to the single-piece shaped guardrail by tightening the connecting nuts on both sides.
[0011] Furthermore, the single-piece shaped guardrail consists of two or more pieces, with adjacent single-piece shaped guardrails having different heights and overlapping each other. A U-shaped connector is installed at the overlapping part, and the connecting screw passes through the U-shaped connector and the outer single-piece shaped guardrail. The connecting screw is fixedly connected to the single-piece shaped guardrail by tightening the connecting nuts on both sides.
[0012] Furthermore, the single-piece shaped guardrail consists of two or more pieces, with a gap between adjacent single-piece shaped guardrail pieces. A connecting screw is installed between the two pieces, and the connecting screw is fixedly connected to the single-piece shaped guardrail piece by tightening the connecting nuts on both sides.
[0013] Compared with the prior art, the present invention has the following beneficial effects: This invention allows for the adjustment of guardrails according to the required size of the opening, achieving flexible and convenient installation and disassembly. It enables one-time installation and disassembly of edge protection for openings, ensuring that subsequent construction processes are not affected and avoiding safety hazards caused by the need to remove guardrails midway for later construction. Furthermore, the guardrails are easy and flexible to install and disassemble, with simple connectors that can be disassembled and reused multiple times, saving costs and facilitating widespread adoption. Attached Figure Description
[0014] Figure 1This is a structural schematic diagram of Embodiment 1 of the present invention - a single-piece opening and edge protection railing; Figure 2 for Figure 1 Side view of the embodiment shown; Figure 3 for Figure 1 A schematic diagram of the bottom connection structure of the embodiment shown; Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model, showing the assembly of two or more openings and edge guardrails connected together. Figure 5 for Figure 4 A partial structural diagram of the embodiment shown; Figure 6 This is a schematic diagram of the structure of Embodiment 3 of this utility model, showing the overlapping assembly of two or more openings and edge protection railings; Figure 7 This is a schematic diagram of the structure of Embodiment 4 of this utility model, showing the overlapping assembly of two or more openings and edge protection railings at different heights. Figure 8 This is a schematic diagram of the structure of embodiment 5 of the present invention, showing the assembly of two or more openings and edge guardrails with adjustable gaps. Explanation of the reference numerals in the figure: 1-Single-piece fixed guardrail; 2-Connecting screw; 3-Connecting nut; 4-U-shaped connector. Detailed Implementation
[0015] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and 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.
[0016] Example 1 Reference Figures 1 to 3 This embodiment provides a detachable and easy-to-assemble protective railing for openings and edges, including a single-piece fixed protective railing 1, connecting screws 2, and connecting nuts 3. Holes for installing the connecting screws 2 are respectively opened at the top and bottom of both ends of the single-piece fixed protective railing 1. The connecting screws 2 are installed in these holes and connected to the main structure of the building. The connecting screws 2 are fixedly connected to the single-piece fixed protective railing 1 by tightening the connecting nuts 3 on both sides. Holes for installing the connecting screws 2 are respectively opened at the left and right bottom of the single-piece fixed protective railing 1. The connecting screws 2 are installed in these holes and connected to the main structure of the building. The connecting screws 2 are fixedly connected to the single-piece fixed protective railing 1 by tightening the connecting nuts 3 on both sides.
[0017] In this embodiment, the single-piece fixed guardrail 1 is welded together from an upper square steel pipe, a lower square steel pipe, and vertical square steel pipes spaced apart between the upper and lower square steel pipes. The vertical square steel pipes are spaced 150mm apart, and the overall structure is rectangular. The height of the single-piece fixed guardrail 1 is manufactured according to safety protection requirements (generally, the height of guardrails is 1.2 meters, and the height of elevator shaft guardrails is 1.8 meters). Due to the need for opening holes, the outer frame of the guardrail requires the square steel material to be one grade thicker than the inner wall.
[0018] In this embodiment, the connecting screw 2 is a screw with a diameter of 14mm and a continuous thread length; the horizontal connecting screw is 250mm long, the bottom connecting screw is 200mm long, and each connecting screw is equipped with two connecting nuts.
[0019] In this embodiment, the holes for installing connecting screws 2 at the upper and lower ends of the single-piece shaped guardrail 1 are opened at the upper and lower 1 / 4 positions and are symmetrically arranged; the holes for installing connecting screws 2 at the lower left and right positions of the single-piece shaped guardrail 1 are opened at 250mm from the frame and are symmetrically arranged; the size of the hole for installing the connecting screw 2 is 2mm larger than the diameter of the connecting screw 2.
[0020] Specific implementation process: The opening is a standard-sized opening within the floor. First, based on the required installation height, installers determine the drilling locations for connection points on both sides and the bottom of the opening to be protected. Then, using a hammer drill (with a 16mm diameter drill bit), holes at a depth of at least 100mm are drilled at these locations. Installers then use a wrench to directly connect and secure the guardrail as required. To ensure the stability and reliability of the installed guardrail, the connecting screw 2 must be inserted into the main structure to a depth of at least 90mm. The connecting screw 2 must be tightly connected to the frame of the single-piece standard guardrail 1, ensuring no looseness or gaps. The installation height of the single-piece standard guardrail 1 must meet the safety regulations for protection height. The dimensions of the single-piece standard guardrail are customized by the project department from the manufacturer. After the opening protection function is completed, workers can directly remove and recycle it using a wrench; the operation is simple.
[0021] Example 2 Reference Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that the single-piece shaped guardrail 1 consists of two or more pieces, with two adjacent single-piece shaped guardrail 1 pieces close together and located in a straight line, and a connecting screw 2 is installed between them. The connecting screw 2 is fixedly connected to the single-piece shaped guardrail 1 by tightening the connecting nuts 3 on both sides.
[0022] The specific implementation process is similar to that in Example 1, and will not be repeated here.
[0023] Example 3 Reference Figure 6 The difference between this embodiment and embodiment 1 is that: the single-piece shaped guardrail 1 consists of two or more pieces, with two adjacent single-piece shaped guardrail 1 pieces overlapping each other, and a U-shaped connector 4 is installed at the overlapping part. The connecting screw 2 passes through the U-shaped connector 4 and the outer single-piece shaped guardrail 1, and the connecting screw 2 is fixedly connected to the single-piece shaped guardrail 1 by tightening the connecting nuts 3 on both sides.
[0024] The U-shaped connector 4 is made of flat steel with a thickness of not less than 2mm, and the diameter of the installation hole of the U-shaped connector 1 is consistent with the reserved hole of the single-piece fixed guardrail 1.
[0025] The specific implementation process is similar to that in Example 1, and will not be repeated here.
[0026] This embodiment is suitable for situations where the size of the opening to be protected does not match the module of the single-piece prefabricated guardrail 1, resulting in overlapping parts during the installation of the guardrail. To solve this problem, a special guardrail overlap connector is used to connect the openings, thus meeting the safety protection requirements of the opening.
[0027] Example 4 Reference Figure 7 The difference between this embodiment and embodiment 1 is that the single-piece shaped guardrail 1 consists of two or more pieces, with adjacent single-piece shaped guardrail 1 pieces having different heights and overlapping each other. A U-shaped connector 4 is installed at the overlapping part, and the connecting screw 2 passes through the U-shaped connector 4 and the outer single-piece shaped guardrail 1. The connecting screw 2 is fixedly connected to the single-piece shaped guardrail 1 by tightening the connecting nuts 3 on both sides.
[0028] The specific implementation process is similar to that in Example 1, and will not be repeated here.
[0029] Example 5 Reference Figure 8 The difference between this embodiment and embodiment 1 is that the single-piece shaped guardrail 1 consists of two or more pieces, with a gap between two adjacent single-piece shaped guardrail 1 pieces, and a connecting screw 2 is installed between them. The connecting screw 2 is fixedly connected to the single-piece shaped guardrail 1 by tightening the connecting nuts 3 on both sides.
[0030] The specific implementation process is similar to that in Example 1, and will not be repeated here.
[0031] This embodiment is suitable for situations where the size of the opening to be protected does not match the module of the standard guardrail, and the remaining size after the whole piece is assembled is less than 150mm, or the protection requirements can be met by adjusting the gap between two pieces after multiple pieces are continuously assembled.
[0032] Finally, it should be noted that the above-described embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.
Claims
1. A type of easily assembled and disassembled protective railing for openings and edges, characterized in that: The system includes a single-piece fixed guardrail, connecting screws, and connecting nuts. The top and bottom ends of the single-piece fixed guardrail are respectively provided with holes for installing the connecting screws, and the left and right bottom ends of the single-piece fixed guardrail are respectively provided with holes for installing the connecting screws. The connecting screws are installed in the holes and connected to the main structure of the building. The connecting screws are fixedly connected to the single-piece fixed guardrail by tightening the connecting nuts on both sides.
2. The easily assembled and disassembled opening and edge protection railing according to claim 1, characterized in that: The single-piece fixed guardrail is welded together from an upper square steel pipe, a lower square steel pipe, and vertical square steel pipes spaced apart between the upper and lower square steel pipes. The vertical square steel pipes are spaced 150mm apart, and the overall structure is rectangular.
3. A detachable and easy-to-assemble guardrail for openings and edges according to claim 1 or 2, characterized in that: The connecting screw is a 14mm diameter screw with a continuous thread length; the horizontal connecting screw is 250mm long, the bottom connecting screw is 200mm long, and each connecting screw is equipped with two connecting nuts.
4. A detachable and easy-to-assemble guardrail for openings and edges according to claim 1 or 2, characterized in that: The holes for installing connecting screws at the top and bottom ends of the single-piece shaped guardrail are symmetrically arranged at the top and bottom 1 / 4 of the length; the holes for installing connecting screws at the bottom left and right ends of the single-piece shaped guardrail are symmetrically arranged at a distance of 250mm from the frame; the size of the holes for installing connecting screws is 2mm larger than the diameter of the connecting screws.
5. A detachable guardrail for openings and edges according to claim 1 or 2, characterized in that: The single-piece fixed guardrail consists of two or more pieces, with adjacent single-piece fixed guardrails close together and located in a straight line, and a connecting screw is installed between them.
6. A detachable and easy-to-assemble guardrail for openings and edges according to claim 1 or 2, characterized in that: The single-piece shaped guardrail consists of two or more pieces, with adjacent single-piece shaped guardrails overlapping. A U-shaped connector is installed at the overlapping part, and the connecting screw passes through the U-shaped connector and the outer single-piece shaped guardrail.
7. A detachable and easy-to-assemble guardrail for openings and edges according to claim 1 or 2, characterized in that: The single-piece shaped guardrail consists of two or more pieces, with adjacent single-piece shaped guardrails having different heights and overlapping each other. A U-shaped connector is installed at the overlapping part, and the connecting screw passes through the U-shaped connector and the outer single-piece shaped guardrail.
8. A detachable and easy-to-assemble guardrail for openings and edges according to claim 1 or 2, characterized in that: The single-piece shaped guardrail consists of two or more pieces, with a gap between adjacent single-piece shaped guardrail pieces, and connecting screws are installed between them.