Construction safety fence
By introducing rotatable and adjustable extension mechanisms and movable extension components into the safety fences for construction projects, the problems of inconvenient expansion and disassembly of existing fences have been solved, achieving both vertical and horizontal dual protection and improving the flexibility and warning effect of the construction site.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XICHENG-CRRC(WUXI) URBAN RAIL TRANSIT ENGINEERING CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-14
Smart Images

Figure CN224496022U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of construction protection equipment, and in particular to a safety fence for construction projects. Background Technology
[0002] Construction safety fences are temporary protective facilities used on construction sites to isolate dangerous areas (such as foundation pits, high-altitude work areas, equipment operation areas, etc.) and prevent people from accidentally entering or falling. They must be stable, provide warnings, and be adjustable.
[0003] In related technologies, common safety fences are mostly rectangular metal frames with protective nets or barriers, supported by fixed support legs or counterweights. Some are foldable, but their expandability is limited and their function is singular, only used for vertical fencing. They cannot flexibly adapt to the needs of different construction scenarios. At the same time, they are not easy to move during disassembly and assembly, increasing the workload of workers. After installation, they are not easy to observe the surrounding environment, and their warning effect is limited. Utility Model Content
[0004] This utility model aims to at least partially solve one of the technical problems in the related art.
[0005] Therefore, the purpose of this utility model is to propose a safety fence for construction projects, which adopts a rotatable and adjustable extension mechanism to achieve vertical and horizontal bidirectional protection, and with the help of a movable extension component, significantly improves expandability, mobility and stability, effectively reduces the labor intensity of workers, and further optimizes the warning and observation effects.
[0006] To achieve the above objectives, this utility model proposes a safety fence for construction projects, comprising a protective frame, a stabilizing frame, four extension mechanisms, and a support assembly. The stabilizing frame is disposed on the protective frame, and the support assembly is movably connected to the stabilizing frame through the protective frame and located below the protective frame. The extension mechanism includes a support rod, a connecting sleeve, and a movable extension assembly. The support rod is disposed on the protective frame, and the movable extension assembly is rotatably connected to the support rod through the connecting sleeve.
[0007] In addition, the construction safety fence proposed above according to this utility model may also have the following additional technical features:
[0008] Specifically, the movable extension assembly includes a first extension rod, a second extension rod, and a caster wheel. The guard frame has a limiting groove at its corner. The first extension rod is mounted on the connecting sleeve and corresponds to the position of the limiting groove. A first positioning screw is threaded onto the first extension rod. The second extension rod is mounted on the first extension rod and passes through it. A connecting hole is provided at the end of the second extension rod away from the connecting sleeve. Multiple first positioning holes are provided on the second extension rod. The caster wheel is mounted on the second extension rod.
[0009] Specifically, the connecting sleeve is provided with a plurality of second positioning holes, and the protective frame is bolted with second positioning screws.
[0010] Specifically, the support assembly includes a stud and a base plate, wherein one end of the stud passes through the protective frame and is disposed on the stabilizing frame and is threadedly connected to the stabilizing frame, and the base plate is disposed at the other end of the stud.
[0011] Specifically, the protective frame is provided with reflective protrusions, and the reflective protrusions are provided with protective netting.
[0012] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: The construction safety fence of this utility model achieves vertical and horizontal bidirectional protection of the guard frame by flipping and adjusting the four expansion mechanisms at the corners of the guard frame. The pull-out adjustable extension components improve the enclosure expansion effect and support connection effect of the device in different installation methods. With the universal wheels, it is easy for workers to move during disassembly and assembly, effectively reducing the labor intensity of workers. The reflective stickers are designed on the front sloping side of the guard frame to increase the visibility angle and optimize the warning and observation effect.
[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
[0015] Figure 1 This is a schematic diagram of the overall structure of the safety fence for construction projects according to this utility model;
[0016] Figure 2 This is a schematic diagram of the expansion mechanism of the safety fence for building construction according to this utility model;
[0017] Figure 3 This is a diagram showing the storage state of the safety fence for building construction according to this utility model.
[0018] Figure 4This is a diagram showing the changing states of the safety fence for construction projects according to this utility model;
[0019] Figure 5 This is a schematic diagram of the internal structure of the safety fence for building construction according to this utility model;
[0020] Figure 6 This is a half-sectional view of the expansion mechanism of the safety fence for building construction according to this utility model;
[0021] Figure 7 for Figure 6 An enlarged schematic diagram of the structure in area A.
[0022] As shown in the figure: 1. Protective frame; 11. Limiting groove; 12. Second positioning screw; 13. Reflective protrusion; 131. Protective net; 2. Stabilizing frame; 3. Extension mechanism; 31. Support rod; 32. Connecting sleeve; 321. Second positioning hole; 33. Moving extension assembly; 331. First extension rod; 3311. First positioning screw; 332. Second extension rod; 3321. Connecting hole; 3322. First positioning hole; 333. Caster wheel; 4. Support assembly; 41. Stud; 42. Base plate. Detailed Implementation
[0023] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.
[0024] The following description, in conjunction with the accompanying drawings, describes a construction safety fence according to an embodiment of the present invention.
[0025] like Figures 1-7 As shown, the construction safety fence of this utility model embodiment may include a protective frame 1, a stabilizing frame 2, four extension mechanisms 3 and a support component 4.
[0026] The stabilizing frame 2 is mounted on the protective frame 1, and the supporting component 4 is movably connected to the stabilizing frame 2 through the protective frame 1 and is located below the protective frame 1.
[0027] It should be noted that the protective frame 1 can stably connect the stabilizing frame 2, the four extension mechanisms 3 and the support components 4, and the support components 4 provide stable support for the protective frame 1 to the ground.
[0028] The extension mechanism 3 includes a support rod 31, a connecting sleeve 32, and a movable extension component 33.
[0029] The support rod 31 is mounted on the guard frame 1, and the movable extension component 33 is rotatably connected to the support rod 31 via the connecting sleeve 32.
[0030] It should be noted that the support rod 31 described in this embodiment is fixedly installed between adjacent edges of the protective frame 1 and is inclined. The connecting sleeve 32 rotates around the support rod 31 to realize the flipping adjustment of the movable extension component 33, thereby realizing the expansion of the device.
[0031] Specifically, during the actual enclosure process, relevant staff select different deployment methods according to the enclosure scenario. In the initial state, the four expansion mechanisms 3 are stored inside the protective frame 1, while the support components 4 are in a retracted state.
[0032] When vertically combining enclosures, the four extension mechanisms 3 are fully extended, so that the first extension rod 331 is located in the limiting groove 11. The second positioning screw 12 is inserted into the corresponding second positioning hole 321, the second extension rod 332 is pulled out, and the first positioning screw 3311 is tightened to fix the position of the second extension rod 332. The support assembly 4 is rotated so that it extends out from the bottom of the guard frame 1 and is supported on the ground. After being extended, it can be moved with the assistance of the bottom casters 333. At the same time, after multiple devices are extended, they are arranged in sequence. The base plate 42 is bolted to the ground and connected in sequence using the connecting holes 3321 on the second extension rod 332 to achieve area enclosure.
[0033] When using horizontal enclosure, for the protection of small foundation pits or holes, the four extension mechanisms 3 are rotated 90 degrees to make them perpendicular to the protective frame 1 and fixed. The support components 4 are in a retracted state and supported on the ground by the casters 333, which facilitates the movement of the device. The extension components can adjust the telescopic length according to actual usage needs.
[0034] During use, reflective protrusions 13 are provided on the front sloping surface of the guard frame 1 to increase the reflective angle of the warning and optimize the warning effect. In addition, the hollow design at the center of the guard frame 1, combined with the protective net 131, improves the observation effect and reduces dust.
[0035] In one embodiment of this utility model, such as Figures 5-7 As shown, the movable extension assembly 33 includes a first extension rod 331, a second extension rod 332, and a caster wheel 333.
[0036] The guard frame 1 has a limiting groove 11 at its corner. The first extension rod 331 is mounted on the connecting sleeve 32 and corresponds to the position of the limiting groove 11. The first extension rod 331 is threaded with a first positioning screw 3311. The second extension rod 332 is mounted on the first extension rod 331 and passes through the first extension rod 331. The end of the second extension rod 332 away from the connecting sleeve 32 has a connecting hole 3321. The second extension rod 332 has multiple first positioning holes 3322. The universal wheel 333 is mounted on the second extension rod 332.
[0037] It should be noted that the limiting groove 11 proposed in the above embodiment corresponds to the cross-sectional shape of the first extension rod 331, so that the first extension rod 331 can be flipped into the limiting groove 11, and the second extension rod 332 slides and pulls in the first extension rod 331. The first positioning screw 3311 is inserted into the first positioning hole 3322 at the corresponding position to fix the position of the second extension rod 332. The first positioning holes 3322 are evenly spaced along the length direction of the second extension rod 332, which is suitable for positioning the second extension rod 332 at different extension lengths. It can adjust the position of the universal wheel 333 at the front end of the second extension rod 332, and at the same time increase the unfolded area of the device.
[0038] In one embodiment of this utility model, such as Figures 5-7 As shown, the connecting sleeve 32 is provided with multiple second positioning holes 321, and the guard frame 1 is bolted with second positioning screws 12.
[0039] It should be noted that the second positioning holes 321 described in this embodiment are arranged at equal intervals along the outer circumference of the connecting sleeve 32, and the included angle between adjacent second positioning holes 321 is 15 degrees. The rotation and fixing of the connecting sleeve 32 realizes the adjustment of the flip angle of the expansion mechanism 3, thereby realizing the horizontal support and unfolding of the device.
[0040] In one embodiment of this utility model, such as Figure 7 As shown, the support assembly 4 includes a stud 41 and a base plate 42.
[0041] One end of the stud 41 passes through the guard frame 1 and is mounted on the stabilizing frame 2, and is threadedly connected to the stabilizing frame 2. The base plate 42 is mounted on the other end of the stud 41.
[0042] It should be noted that, as proposed in the above embodiment, the stud 41 is threadedly connected to the inside of the stabilizing frame 2, which drives the base plate 42 to move up and down for adjustment, so that the base plate 42 can be supported on the ground. The base plate 42 has two fixing holes, and bolts are inserted to fix the base plate 42 to the ground when enclosing it.
[0043] In one embodiment of this utility model, such as Figure 1 As shown, reflective protrusions 13 are provided on the protective frame 1, and a protective net 131 is provided on the reflective protrusions 13.
[0044] It should be noted that the outer surface of the reflective protrusion 13 described in this embodiment is inclined, and a reflective sticker is attached to the outer surface to reflect light sources from different directions, thereby improving the warning effect. A protective net 131 is set inside the reflective protrusion 13, which corresponds to the central hollow position of the protective frame 1, making it easy for people to observe through the protective net 131, increasing the visibility of the enclosure, and reducing dust flow.
[0045] In summary, the construction safety fence of this utility model embodiment adopts a rotatable and adjustable extension mechanism to achieve vertical and horizontal bidirectional protection, and with the help of movable extension components, it significantly improves expandability, mobility and stability, effectively reduces the labor intensity of workers, and further optimizes the warning and observation effects.
[0046] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A safety fence for construction projects, characterized in that, It includes a protective frame, a stabilizing frame, four extension mechanisms, and support components, among which, The stabilizing frame is mounted on the protective frame; The support component is movably connected to the stabilizing frame through the protective frame and is located below the protective frame; The extension mechanism includes a support rod, a connecting sleeve, and a movable extension assembly, wherein, The support rod is mounted on the protective frame; The movable extension component is rotatably connected to the support rod via the connecting sleeve.
2. The construction safety fence according to claim 1, characterized in that, The movable extension assembly includes a first extension rod, a second extension rod, and casters, wherein... The protective frame is provided with limiting grooves at its corners; The first extension rod is disposed on the connecting sleeve and corresponds to the position of the limiting groove. A first positioning screw is threadedly connected to the first extension rod. The second extension rod is disposed on the first extension rod and passes through the first extension rod. The end of the second extension rod away from the connecting sleeve is provided with a connecting hole, and the second extension rod is provided with a plurality of first positioning holes. The omnidirectional wheel is mounted on the second extension rod.
3. The construction safety fence according to claim 2, characterized in that, The connecting sleeve is provided with multiple second positioning holes, and the protective frame is bolted with second positioning screws.
4. The construction safety fence according to claim 1, characterized in that, The support assembly includes studs and a base plate, wherein... One end of the stud passes through the protective frame and is mounted on the stabilizing frame, and is threadedly connected to the stabilizing frame; The base plate is located at the other end of the stud.
5. The construction safety fence according to claim 1, characterized in that, The protective frame is provided with reflective protrusions, and a protective net is provided on the reflective protrusions.