Portable lossless installation temporary guardrail structure
The combination of telescopic fences and vertical sleeves creates a clamping structure that solves the problem of non-destructive installation on building roofs, providing portable guardrails and improving construction safety and aesthetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YELLOW RIVER ENG CONSULTING CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-28
AI Technical Summary
Existing technologies struggle to address the challenge of installing safety railing structures on building roofs during construction. A key technical issue that current technologies cannot effectively resolve is how to ensure safety on building roofs, particularly how to provide portable, non-destructive temporary railing structures for installation during roof construction.
It adopts a combination of telescopic fence and vertical sleeve, and uses an L-shaped clamping structure with supporting screws to achieve portable and non-destructive installation, and combines reflective warning signs to improve safety.
It enables non-destructive installation and efficient disassembly on building roofs. The portable guardrail structure improves construction safety, prevents falls from heights, and maintains the building's aesthetics.
Smart Images

Figure CN224173769U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of temporary protection technology for rooftop operations, and in particular to a portable, non-destructive installation temporary guardrail structure. Background Technology
[0002] For many years, in order to maintain the aesthetic appeal of urban civil buildings, safety railings were no longer installed on rooftops where there was no daily activity or work, such as subway entrance canopies, security booths, and ground-level air-raid shelter entrances. However, as the buildings have been in use for longer periods, the rooftops may become damaged or dirty, requiring maintenance and cleaning work. Because safety railings and other protective measures were not installed during the initial design and construction, workers may fall while working on them, resulting in personal injury and economic losses.
[0003] Currently, to address safety concerns for workers performing maintenance and cleaning on unprotected building rooftops, the common practice is to find anchor points nearby, secure safety harnesses to these points, and prevent falls. However, in reality, most building rooftops lack anchor points, forcing workers to risk falls. Furthermore, adding safety railings for frequent maintenance and cleaning can damage the original building structure, compromising its overall strength and aesthetics. Additionally, these fixed railings are difficult to remove and reuse later. Summary of the Invention
[0004] The purpose of this utility model is to provide a portable, non-destructive installation temporary guardrail structure to address the shortcomings of existing technologies.
[0005] To achieve the above objectives, the present invention can adopt the following technical solution:
[0006] The portable, non-destructive installation temporary guardrail structure of this utility model includes a telescopic fence and vertical sleeves fixed to both ends of the telescopic fence. The telescopic fence is composed of multiple diagonal railings arranged in an interlaced manner and hinged together. A support screw is movably inserted inside the vertical sleeve. The lower end of the support screw protrudes out of the vertical sleeve and is fitted with a pair of L-shaped clamps. The two L-shaped clamps are arranged opposite each other, one above the other, forming a groove between them for clamping onto the edge of the building roof. A tightening nut is screwed onto the support screws located on the upper and lower sides of the two L-shaped clamps.
[0007] Furthermore, to enhance the warning effect, reflective warning marks can be set on the surfaces of both the telescopic fence and the vertical sleeve.
[0008] The advantages of this utility model are its simple structure, easy installation and disassembly, portability, and ease of manufacturing. A pair of opposing L-shaped clamps fitted onto the support screws, along with tightening nuts screwed onto the support screws on the upper and lower sides of the two L-shaped clamps, easily clamp and fix it to the edge of the building roof, achieving non-destructive installation. Furthermore, with the addition of a vertical sleeve that can be fitted onto the support screws, and a telescopic fence fixed to the outer wall of the vertical sleeve, a protective barrier is easily formed around the edge of the building roof, effectively warning workers, preventing falls from heights, and improving the safety of roof maintenance and cleaning operations, demonstrating strong application prospects. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model.
[0010] Figure 2 yes Figure 1 A schematic diagram showing the connection between the two L-shaped clamps and the supporting screw.
[0011] Figure 3 yes Figure 1 A schematic diagram showing the connection between the two L-shaped clamps and the building roof. Detailed Implementation
[0012] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the scope of protection of this invention is not limited to the following embodiments.
[0013] like Figure 1-3 As shown, the portable non-destructive installation temporary guardrail structure of this utility model includes a telescopic fence 1 for forming a temporary guardrail enclosure around the four sides of the building roof 100, and vertical sleeves 2 fixed to both ends of the telescopic fence 1.
[0014] The telescopic fence 1 is composed of multiple diagonal railings arranged in an interlaced pattern and hinged together. A support screw 3 is movably inserted into the vertical sleeve 2, with its lower end extending out of the vertical sleeve 2. A pair of L-shaped clamps 4 are fitted onto the support screw 3 located below the vertical sleeve 2. The support screw 3 can be directly inserted into the two L-shaped clamps 4, or it can be screwed onto them. It is important to note that regardless of whether the support screw 3 is screwed onto the L-shaped clamps 4, the two L-shaped clamps 4 must be positioned one above the other, thus forming a slot 5 between the two L-shaped clamps 4 for clamping onto the edge of the building roof 100. The slot 5 can change its cavity size as the two L-shaped clamps 4 are adjusted, thus adapting to building roofs 100 of various thicknesses. At this time, a tightening nut 6 should be screwed onto the support screws 3 located on the upper and lower sides of the two L-shaped clamps 4 respectively. The tightening nut 6 located below is used to support the lower L-shaped clamp 4 to restrict its downward movement, while the tightening nut 6 located above is used to press down the upper L-shaped clamp 4 to restrict its upward movement. The two tightening nuts 6 further ensure that the cavity size of the slot 5 is fixed, thereby ensuring that the two L-shaped clamps 4 can be firmly clamped on the edge of the building roof 100, realizing non-destructive installation on the building roof 100.
[0015] In addition, to further enhance the warning effect, reflective warning marks can be set on the surfaces of both the telescopic fence 1 and the vertical sleeve 2. These reflective warning marks can be pasted red and white reflective warning stickers or coated red and white reflective paint.
[0016] In use, simply fasten a set of support screws 3 at both ends of each side of the building roof 100, and then stretch out a set of telescopic fences 1, and fit the vertical sleeves 2 at both ends onto the two support screws 3, thereby forming a fence enclosure on one side of the building roof 100.
[0017] Of course, since the roof of a building is often rectangular, a rectangular enclosure consisting of four sets of telescopic fences 1 and four vertical sleeves 2 can be directly installed. In this way, four sets of support screws 3 can be fixed at the four corners of the roof 100, so that the four sets of telescopic fences 1 can be easily stretched and unfolded, and the four vertical sleeves 2 can be fitted onto the four support screws 3, quickly forming a safety enclosure around the edge of the roof 100. This effectively warns workers, prevents them from falling from heights, improves the safety of roof maintenance and cleaning operations, and ensures non-destructive installation of the roof 100, which has strong application prospects.
Claims
1. A portable, non-destructive installation temporary guardrail structure, characterized in that: The device includes a telescopic fence and vertical sleeves fixed to both ends of the telescopic fence. A support screw is movably inserted inside the vertical sleeve, and the lower end of the support screw protrudes outside the vertical sleeve. A pair of L-shaped clamps are fitted on the support screws. The two L-shaped clamps are arranged opposite each other, one above the other, forming a groove between them for clamping onto the edge of the building roof. A tightening nut is screwed onto the support screws located on the upper and lower sides of the two L-shaped clamps.
2. The portable, non-destructive installation temporary guardrail structure according to claim 1, characterized in that: The telescopic fence is composed of multiple diagonal railings arranged in an interlaced manner and hinged together.
3. The portable, non-destructive installation temporary guardrail structure according to claim 1 or 2, characterized in that: Reflective warning markings are provided on the surfaces of both the telescopic fence and the vertical sleeve.