Entrance protection fence and system

Abstract

The utility model discloses a kind of hole protection fence and system, it is related to hole protection technical field, by setting multiple first connecting rods, multiple second connecting rods and multiple third connecting rods, in use, the first ring body of the shape adaptation formed in hole is enclosed using the multiple first connecting rods set, the function of fence is placed on the top of hole is realized, simultaneously make all second connecting rods are distributed along circumference interval, and the bottom of all second connecting rods is connected with first ring body, the top of all second connecting rods is converged to the central axis direction of first ring body to be enclosed with first ring body and form pyramidal structure, the two ends of any third connecting rod are connected with a first connecting rod and with its second connecting rod located on the same side, can be used to set fence to realize the protection function to hole, since entire fence is no longer attached to hole, ensure that operating personnel is definitely obtained the specific position of the hole, both can avoid the damage of fence, improve protection security.

Description

Technical Field

[0001] This utility model relates to the field of opening protection technology, and in particular to an opening protection fence and system. Background Technology

[0002] Currently, there are numerous problems with manhole safety railings at construction sites. Some projects have failed to install safety railings, covers, or safety nets as required at reserved openings, elevator shafts, and other locations. For example, the height of the railings is less than 1.2 meters, or the spacing between the posts is too large; the covers are not effectively fixed or have insufficient load-bearing capacity, failing to provide effective protection. Furthermore, the current manhole safety warnings are inadequate and are often overlooked by construction workers, leading to serious accidents. Moreover, some safety railings, covers, and safety nets are easily damaged in certain environments, failing to meet protective requirements. Utility Model Content

[0003] The main purpose of this utility model is to propose a protective fence and system for well openings, which aims to solve the technical problems of existing protective fences that are less than 1.2 meters high or have excessively large spacing between posts, and that the covers are not effectively fixed or have insufficient load-bearing capacity, thus failing to play an effective protective role. At the same time, the current well opening protection warning function is not high and is often ignored by construction workers, leading to serious accidents. Moreover, some protective fences, covers and safety nets are easily damaged in some environments and fail to meet the protection requirements.

[0004] To achieve the above objectives, in a first aspect, this utility model proposes a protective fence for openings, comprising: Multiple first connecting rods are connected end to end in a horizontal direction to form a first ring body that fits the shape of the opening; Multiple second connecting rods are provided, all of which are circumferentially spaced, with the bottom of each second connecting rod connected to the first ring body, the top of each second connecting rod extending vertically upward, and the tops of each second connecting rod converging towards the central axis of the first ring body to form a cone-shaped structure with the first ring body; and... Multiple third connecting rods are distributed circumferentially, and each of the third connecting rods is connected at both ends to a first connecting rod and a second connecting rod located on the same side as it.

[0005] In one embodiment, the system further includes multiple fourth connecting rods, which are connected end to end in a horizontal direction to form a second ring. The second ring is located above the first ring and is connected to all the second connecting rods.

[0006] In one embodiment, a lifting ring is also included, which is mounted on the top of the second connecting rod.

[0007] In one embodiment, all the third connecting rods are arranged parallel to each other.

[0008] In one embodiment, the distance between any two adjacent third connecting rods is A, where A ≤ 500 mm.

[0009] In one embodiment, the first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod are all made of galvanized steel pipe.

[0010] In one embodiment, the first connecting rod, the second connecting rod, and the fourth connecting rod are all made of galvanized steel pipe with a diameter of 42mm.

[0011] In one embodiment, the third connecting rod is made of galvanized steel pipe with a diameter of 25 mm.

[0012] In one embodiment, the height of the lifting ring is B, where B ≤ 250 mm.

[0013] Based on the same technical concept, in a second aspect, this utility model also proposes a hole protection system, including the hole protection fence described in the first aspect.

[0014] The technical solution of this utility model involves setting multiple first connecting rods, multiple second connecting rods, and multiple third connecting rods. In use, the multiple first connecting rods form a first ring that adapts to the shape of the opening. This allows the utility model to place a fence above the opening by adapting the first ring to the shape of the opening. Simultaneously, all second connecting rods are spaced circumferentially, with the bottom of each second connecting rod connected to the first ring and the top of each second connecting rod extending vertically upwards. The tops of all second connecting rods converge towards the central axis of the first ring to form a cone structure. Multiple third connecting rods are spaced circumferentially, with each third connecting rod connected to a first connecting rod and a second connecting rod on the same side. Ultimately, this utility model enables the fence to protect the opening. Since the fence is no longer directly attached to the opening, it ensures that workers can clearly see the exact location of the opening, preventing damage to the fence and improving safety. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of the opening protection fence provided by this utility model; Figure 2 for Figure 1 The diagram shows another perspective of the structure of the protective fence around the opening in the example. Attached image description: 100, First connecting rod; 200, Second connecting rod; 300, Third connecting rod; 400, Fourth connecting rod; 500, Lifting ring.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] 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 scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions 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 those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] In traditional construction sites, opening protection structures commonly suffer from technical problems such as heights below safety specifications, spacing between support members exceeding standard limits, unreliable fixing methods for cover components, insufficient load-bearing capacity, weak visual warning functions, and susceptibility to corrosion or deformation of materials in harsh environments. Specifically, insufficient guardrail height leads to protective failure; excessive spacing between posts allows personnel or objects to fall through gaps; ineffectively fixed cover plates with insufficient load-bearing capacity cannot withstand accidental impact loads; low visibility of warning signs on protective devices reduces worker awareness of hazardous areas; and the structural integrity of protective components is compromised by dampness and vibration, affecting the reliability, stability, and durability of the protection system.

[0023] For example, in the application of protective measures for elevator shafts in high-rise buildings, the shaft opening size is 1.5 meters × 2.0 meters, and the construction environment involves continuous humidity and mechanical vibration. The existing protective railing uses a simple welded steel pipe structure, with a height of 1.0 meter and a pole spacing of 1.2 meters. The cover plate is made of unsecured thin steel plate. During construction, due to the excessively large pole spacing, small tools frequently fall through the gaps; the cover plate shifts when people step on it, exposing the shaft opening; rust on the steel pipe surface causes loosening of connection points and deformation of some components. Furthermore, the warning signs on the protective structure are illegible due to dirt, and construction workers frequently fall near the shaft opening when working. Specifically, the failure of the protective measures directly causes safety hazards, disrupts the continuity of the construction process, and increases the frequency of maintenance work.

[0024] This utility model proposes a protective fence and system for openings.

[0025] Please see Figure 1 , Figure 2 For ease of understanding, this type of opening protection fence includes multiple first connecting rods 100, multiple second connecting rods 200, and multiple third connecting rods 300. All the first connecting rods 100 are connected end to end in the horizontal direction to form a first ring body that fits the shape of the opening. All the second connecting rods 200 are distributed circumferentially, and the bottom of all the second connecting rods 200 is connected to the first ring body. The top of all the second connecting rods 200 extends vertically upward, and the top of all the second connecting rods 200 converges towards the central axis of the first ring body to form a cone structure with the first ring body. Multiple third connecting rods 300 are distributed circumferentially, and the two ends of any third connecting rod 300 are respectively connected to a first connecting rod 100 and a second connecting rod 200 located on the same side.

[0026] Specifically, the protective fence includes multiple first connecting rods 100. All the first connecting rods 100 are connected end to end in a horizontal direction to form a first ring that conforms to the shape of the opening to be protected. For example, when the opening is rectangular, four first connecting rods 100 can be connected by welding to form a rectangular first ring; or, when the opening is circular, multiple arc-shaped first connecting rods 100 can be connected by bolts to form a circular first ring. This first ring serves as the bottom base of the protective fence, and its size and shape are designed to completely cover or surround the edge of the opening, thereby providing basic protection.

[0027] The protective fence also includes multiple second connecting rods 200. All of these second connecting rods 200 are spaced circumferentially, and their bottoms are connected to the first ring. The tops of all the second connecting rods 200 extend vertically upwards and converge towards the central axis of the first ring, forming a cone-shaped structure together with the first ring. For example, the bottoms of the second connecting rods 200 can be connected to pre-set connection points on the first ring via a snap-fit ​​structure, while their tops can be simply welded together at a single point. This cone-shaped structure design gives the protective fence a certain upward height, effectively preventing people or objects from falling into the opening from above, while its converging top structure also increases the overall stability of the fence.

[0028] The protective fence also includes multiple third connecting rods 300. These third connecting rods 300 are spaced apart circumferentially, with each third connecting rod 300 connected at both ends to a first connecting rod 100 and a second connecting rod 200 located on the same side. For example, the third connecting rods 300 can be bolted together, with one end fixed to the side of the first connecting rod 100 and the other end fixed to the adjacent second connecting rod 200. These third connecting rods 300 form a diagonal support between the first ring and the second connecting rod 200, significantly enhancing the structural rigidity and deformation resistance of the protective fence, ensuring that the fence maintains its protective function even under external impact.

[0029] In this embodiment, by setting multiple first connecting rods 100, multiple second connecting rods 200, and multiple third connecting rods 300, in use, the multiple first connecting rods 100 form a first ring that adapts to the shape of the opening. This allows the present invention to adapt the shape of the first ring to the opening, thereby realizing the function of placing the fence above the opening. At the same time, all the second connecting rods 200 are distributed circumferentially, and the bottom of all the second connecting rods 200 is connected to the first ring, while the top of all the second connecting rods 200 extends vertically upward. Furthermore, the tops of all the second connecting rods 200 converge toward the central axis of the first ring body to form a cone structure with the first ring body. Multiple third connecting rods 300 are distributed circumferentially. The two ends of any third connecting rod 300 are respectively connected to a first connecting rod 100 and a second connecting rod 200 located on the same side. Ultimately, this utility model can use the fence to achieve the function of protecting the opening. Since the entire fence is no longer attached to the opening, it can ensure that the workers can clearly know the specific location of the opening, which can not only avoid damage to the fence, but also improve the safety of protection.

[0030] In one embodiment, the system further includes multiple fourth connecting rods 400, which are connected end to end in a horizontal direction to form a second ring. The second ring is located above the first ring and is connected to all the second connecting rods 200.

[0031] In this embodiment, by adding a second ring above the first ring and connecting the second ring to all the second connecting rods 200, the overall structural stability of the opening protection fence is significantly improved. The second ring, acting as a central horizontal support, effectively enhances the lateral rigidity of the second connecting rods 200, preventing excessive deformation or swaying when subjected to external lateral forces. The second ring distributes the lateral force acting on a single second connecting rod 200 throughout the entire ring structure, allowing the entire fence to resist external impacts as a whole. This structural combination makes the entire cone structure more robust, better able to resist external impacts and lateral pressures, thereby significantly improving the protective reliability and service life of the opening protection fence.

[0032] In one embodiment, a lifting ring 500 is also included, which is mounted on the top of the second connecting rod 200.

[0033] In this embodiment, by setting a lifting ring 500 at the top of the second connecting rod 200 of the aforementioned protective fence at the opening, the entire protective fence structure can be reliably connected to external lifting equipment or handling tools via the lifting ring 500 when it needs to be moved or hoisted. Since the tops of all the second connecting rods 200 converge towards the central axis of the first ring to form a cone structure, the lifting ring 500 is installed at the top of the second connecting rod 200, typically at or near the highest point of the entire cone structure. This provides the protective fence with a relatively centrally located and easily accessible hoisting point. During hoisting, the force borne by the lifting ring 500 can be evenly transmitted to the first and second rings through the second connecting rods 200, thereby ensuring the stability of the entire protective fence during hoisting and preventing tilting or damage due to uneven force distribution. This design fully utilizes the structural strength of the protective fence itself, integrating the hoisting function into its main structure, achieving a balance between protection and ease of handling.

[0034] In one embodiment, all the third connecting rods 300 are arranged parallel to each other.

[0035] In this embodiment, by arranging all the third connecting rods 300 parallel to each other, these third connecting rods 300 form a series of evenly distributed parallel support units on the side of the fence. This parallel layout allows the third connecting rods 300 to effectively and evenly transfer the radial and axial loads acting on the second connecting rod 200, as well as the vertical load transmitted through the lifting ring 500, to the first ring body. In this way, the overall structural rigidity of the fence is significantly improved, enabling it to better resist external impacts, lateral thrust, and torque generated during hoisting, thereby ensuring the stability and safety of the fence under various working conditions.

[0036] In one embodiment, the distance between any two adjacent third connecting rods 300 is A, where A ≤ 500 mm.

[0037] In this embodiment, by limiting the distance A between any two adjacent third connecting rods 300 to no more than 500mm, the protective performance of the existing opening protection fence structure is further improved. Within the overall framework where the fence body is formed by the first connecting rod 100 forming a first ring, the second connecting rod 200 forming a cone structure, and the fourth connecting rod 400 forming a second ring, with the third connecting rods 300 arranged parallel to each other, the spacing of the third connecting rods 300 is strictly controlled, resulting in a denser protective mesh. This dense mesh structure effectively reduces the opening size of the fence, significantly lowering the risk of people accidentally passing through or falling, while also preventing larger objects from falling through the gaps. By ensuring that the spacing of the third connecting rods 300 meets safety requirements, this protective fence provides structural support while also offering a more reliable physical barrier, enabling it to more effectively fulfill its safety protection responsibilities.

[0038] In one embodiment, the first connecting rod 100, the second connecting rod 200, the third connecting rod 300, and the fourth connecting rod 400 are all made of galvanized steel pipe.

[0039] In this embodiment, by using galvanized steel pipes for the main structural components constituting the aforementioned protective fence around the opening—namely, the first connecting rod 100, the second connecting rod 200, the third connecting rod 300, and the fourth connecting rod 400—the entire fence structure possesses excellent corrosion resistance. The galvanized layer, acting as a sacrificial anode, preferentially oxidizes in corrosive environments, effectively protecting the internal steel from corrosion. This ensures that the fence maintains its structural strength and integrity for extended periods in humid, rainy, or corrosive outdoor environments, preventing structural failure due to material corrosion and thus guaranteeing the long-term effectiveness and safety of the protective fence. This material selection, combined with the overall structural design of the fence, enhances the reliability and durability of the protective fence.

[0040] In one embodiment, the first connecting rod 100, the second connecting rod 200, and the fourth connecting rod 400 are all made of galvanized steel pipe with a diameter of 42mm.

[0041] In this embodiment, by using galvanized steel pipes with a diameter of 42mm for the first connecting rod 100, second connecting rod 200, and fourth connecting rod 400 in the opening protection fence, the overall structural strength and durability of the fence are significantly improved. Specifically, the excellent corrosion resistance of the galvanized steel pipe as a structural material ensures the long service life of the fence in various harsh environments, avoiding structural weakening due to rust. At the same time, the 42mm pipe diameter provides sufficient cross-sectional dimensions for these key load-bearing and supporting members, thereby giving the fence higher bending, compressive, and impact resistance, effectively resisting external forces and ensuring the stability and safety of the protective fence. This unified selection of materials and dimensions not only simplifies material procurement and production processes and promotes standardized production, but also makes the first ring, cone structure, and second ring form a more robust and unified whole, jointly providing reliable protection for the opening and effectively solving problems such as insufficient strength, easy corrosion, and production inconvenience caused by unclear materials and dimensions.

[0042] In one embodiment, the third connecting rod 300 is made of galvanized steel pipe with a diameter of 25 mm.

[0043] In this embodiment, by using a 25mm diameter galvanized steel pipe for the third connecting rod 300, the overall weight and material cost of the fence are effectively reduced while ensuring the overall structural strength and stability of the opening protection fence. This size selection allows the third connecting rod 300 to achieve a reasonable strength match with the first connecting rod 100, the second connecting rod 200, and the fourth connecting rod 400, all with a diameter of 42mm. This avoids resource waste caused by over-design and prevents insufficient strength from affecting the protective effect. Thus, the fence meets protection requirements while offering better economy and ease of installation.

[0044] In one embodiment, the height of the lifting ring 500 is B, where B ≤ 250 mm.

[0045] In this embodiment, by limiting the height B of the lifting ring 500 to no more than 250mm, the opening protection fence of this application effectively solves the operational inconvenience and safety hazards that may be caused by an excessively high lifting ring 500 while maintaining its functionality and stability as a protective structure. Specifically, the moderate height of the lifting ring 500 makes the protective fence more convenient to handle, hoist, or store, avoiding collisions or jamming with other objects due to excessive height, thereby reducing the risk of damage and improving the overall operational safety. In addition, this height limit also helps optimize the stacking and transportation efficiency of the fence, reducing space waste caused by irregular protrusions.

[0046] Based on the same technical concept, in a second aspect, this utility model also proposes an opening protection system, including the opening protection fence of the first aspect.

[0047] In this embodiment, a complete opening protection system is constructed by using the aforementioned opening protection fence as its core component. This system utilizes the structural characteristics of the opening protection fence: multiple first connecting rods 100 are connected end-to-end horizontally to form a first ring adapted to the shape of the opening; multiple second connecting rods 200 are distributed circumferentially and connected to the first ring, with their tops extending upwards and converging towards the central axis of the first ring to form a cone structure; and multiple third connecting rods 300 connect the first connecting rods 100 and the second connecting rods 200. This structural design gives the fence itself good stability, adaptability, and protective capabilities. By incorporating this fence into a system framework, the correct selection, installation, fixing, and daily inspection of the fence can be ensured, thereby maximizing its protective effectiveness in practical applications. This system achieves comprehensive and continuous security for the opening area by integrating physical protection with management processes. A complete opening protection system is constructed by using the aforementioned opening protection fence as its core component. This system utilizes the structural characteristics of the opening protection fence. Multiple first connecting rods 100 are connected end-to-end horizontally to form a first ring adapted to the shape of the opening. Multiple second connecting rods 200 are distributed circumferentially and connected to the first ring, with their tops extending upwards and converging towards the central axis of the first ring to form a cone structure. Multiple third connecting rods 300 connect the first connecting rods 100 and the second connecting rods 200. This structural design gives the fence excellent stability, adaptability, and protective capabilities. By incorporating this fence into a system framework, proper selection, installation, fixation, and daily inspection of the fence can be ensured, thereby maximizing its protective effectiveness in practical applications. By integrating physical protection with management processes, this system achieves comprehensive and continuous security for the opening area.

[0048] As a specific implementation method, the opening protection system exemplified in this embodiment can be applied to the protection of reserved openings in building construction sites. The opening protection fence in the system can be customized or adjusted according to the size and shape of the opening. For example, when the opening is rectangular, the first ring can be composed of four first connecting rods 100. During installation, the bottom of the fence can be firmly fixed to the ground at the edge of the opening using expansion bolts or similar methods to resist external impacts or accidental thrust. If the opening protection fence also includes a second ring formed by multiple fourth connecting rods 400, this second ring can further enhance the overall structural strength and stability of the fence. Furthermore, if the top of the fence is equipped with a lifting ring 500, during the handling and installation of the fence, the lifting ring 500 can be hooked onto a lifting device to achieve convenient hoisting and precise positioning of the fence, thereby improving installation efficiency and reducing the risk of manual operation.

[0049] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present utility model.

Claims

1. A protective fence for openings, characterized in that, include: Multiple first connecting rods are connected end to end in a horizontal direction to form a first ring body that fits the shape of the opening; Multiple second connecting rods are provided, all of which are circumferentially spaced, with the bottom of each second connecting rod connected to the first ring body, the top of each second connecting rod extending vertically upward, and the tops of each second connecting rod converging towards the central axis of the first ring body to form a cone-shaped structure with the first ring body; and... Multiple third connecting rods are distributed circumferentially, and each of the third connecting rods is connected at both ends to a first connecting rod and a second connecting rod located on the same side as it.

2. The protective fence for openings as described in claim 1, characterized in that, It also includes multiple fourth connecting rods, which are connected end to end in a horizontal direction to form a second ring. The second ring is located above the first ring and is connected to all the second connecting rods.

3. The protective fence for openings as described in claim 2, characterized in that, It also includes a lifting ring, which is mounted on the top of the second connecting rod.

4. The protective fence for openings as described in claim 3, characterized in that, All of the third connecting rods are arranged parallel to each other.

5. The protective fence for openings as described in claim 4, characterized in that, The distance between any two adjacent third connecting rods is A, where A ≤ 500 mm.

6. The protective fence for openings as described in claim 3, characterized in that, The first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod are all made of galvanized steel pipe.

7. The protective fence for openings as described in claim 4, characterized in that, The first connecting rod, the second connecting rod, and the fourth connecting rod are all made of galvanized steel pipe with a diameter of 42mm.

8. The protective fence for openings as described in claim 7, characterized in that, The third connecting rod is made of galvanized steel pipe with a diameter of 25mm.

9. The protective fence for openings as described in claim 8, characterized in that, The height of the lifting ring is B, where B ≤ 250 mm.

10. A hole protection system, characterized in that, Including the protective fence for openings as described in any one of claims 1 to 9.

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