Improved hole protective fence for building construction

Abstract

The utility model discloses an improved hole protective fence for building construction, which comprises a first fence body, two ends of the first fence body are respectively and vertically connected with a first upright post, and the first upright post at one end is connected with a first limiting plate; the two ends of the second fence body are vertically connected with second stand columns correspondingly, and the second stand column at one end is connected with a second limiting plate; the bolt buckles are connected to the upper portion of the first stand column at the first limiting plate and the upper portion of the second stand column at the second limiting plate respectively; the plug pin assemblies are connected to the upper portion of the first fence body at the end not provided with the first limiting plate and the upper portion of the second fence body at the end not provided with the second limiting plate. A warning board is detachably installed on the fence body. The protective device is good in protective effect, convenient to assemble and disassemble, convenient to recycle and use, low in cost and capable of effectively preventing objects from falling off or personnel from entering by mistake and improving the overall safety of a construction site; meanwhile, a warning and reminding effect can be achieved on passersby, management and maintenance of public areas are facilitated, and high popularization value is achieved.

Description

Technical Field

[0001] This utility model relates to a protective structure, specifically an improved protective fence for construction openings. It is mainly used to cover and protect some temporary, unsealed reserved construction openings during construction to prevent outsiders or construction workers from accidentally falling in. It belongs to the field of construction safety protection technology. Background Technology

[0002] In construction projects, temporary, unsealed openings are frequently encountered, such as openings after pile foundation drilling, pre-reserved openings in floors, and structural openings. These openings often pose safety hazards before further construction can proceed. According to Article 4.2 of the "Technical Specification for Safety of High-Altitude Operations in Building Construction" (JGJ), when the shorter side dimension of a non-vertical opening is greater than or equal to 50cm, guardrails or horizontal protective measures should be implemented; when the shorter side dimension of a non-vertical opening is greater than 150cm, guardrails and horizontal safety nets should be used. Therefore, the protection of openings at construction sites is a crucial aspect of safe construction, and the rapid installation and removal of guardrails directly impacts the progress and safety of the construction project.

[0003] Currently, traditional protective railings for openings are constructed using either steel pipes and couplers or wooden boards and wire mesh. While the wooden board and wire mesh method is simple in structure, its function is relatively limited. Due to factors such as the material of the steel pipes and the skills of the workers, the installation and dismantling speed, height, length, and spacing of the railings constructed with steel pipes and couplers cannot be standardized. Furthermore, the construction of such railings is time-consuming, labor-intensive, space-consuming, and has poor protective effect. For some municipal road construction projects, many protective measures rely on road warning signs that only provide single-sided protection or road barriers for single-sided protection. Moreover, these protective components are often dismantled and repurposed by others, creating safety hazards and affecting the safe and civilized construction of the entire project.

[0004] Although existing structures are designed with devices specifically for protecting reserved openings during building construction, these devices are complex, time-consuming and labor-intensive to install, difficult to transport, and occupy a large area, which directly affects the protective effect and leads to potential difficulties and dangers in the protective work, resulting in safety hazards.

[0005] On the other hand, many protective devices lack relevant safety warning signs or slogans, making it difficult for the public and third parties to identify them and quickly realize the dangers around them. Passersby and vehicles are also unable to quickly perceive the potential safety hazards, leading to construction workers or other personnel accidentally touching or falling into them, increasing the risk of accidents. In severe cases, the consequences could be disastrous. Furthermore, while the existing structures can be installed and dismantled, they are still inconvenient to install and dismantle, requiring individual assembly. When working on road surfaces or in areas where workers frequently need to access, excessive disassembly can reduce the stability of the fence, while also being time-consuming and labor-intensive, affecting construction efficiency.

[0006] In some construction sites, discarded timber is often used to seal pre-reserved holes. In order to avoid safety accidents, people are even assigned to take turns guarding and watching over them.

[0007] On the other hand, it is inconvenient to transport and move it. It cannot be flexibly moved to the designated construction location according to the actual needs of on-site construction, which is often very inconvenient.

[0008] Therefore, the key to solving the above-mentioned technical problems lies in developing a practical and reliable protective fence for openings that is easy to install and dismantle. Summary of the Invention

[0009] In view of the numerous defects and shortcomings existing in the aforementioned background technology, this utility model makes improvements and innovations, aiming to provide a protective structure for openings with good protective effect and uniform style. This utility model uses simple materials to process into a uniform fence, which is easy to install and dismantle, convenient for reuse, reduces construction costs, effectively prevents objects from falling or people from accidentally entering, and improves the overall safety of the construction site; it reduces the sense of security of surrounding pedestrians, and is equipped with corresponding warning signs with warning slogans, thus playing a warning and reminder role for passers-by, which is conducive to the management and maintenance of public areas and has strong promotional value.

[0010] To solve the above problems and achieve the above-mentioned invention objectives, this utility model provides an improved protective fence for construction openings, achieved through the following design structure and technical solution:

[0011] An improvement to the protective fence for construction openings according to this utility model includes:

[0012] The first fence body (1) has a first column (11) vertically connected to both ends of the first fence body (1), and a first limiting plate (12) is connected inside the first column (11) at one end.

[0013] The second fence body (2) has two vertically connected second posts (21) at both ends, and a second limiting plate (22) is connected inside the second post (21) at one end.

[0014] The pin buckle (3) is connected to the top of the first column (11) at the first limiting plate (12) and the top of the second column (21) at the second limiting plate (22);

[0015] The pin assembly (4) is connected to the top of the first fence body (1) at the non-first limiting plate (12) end and the top of the second fence body (2) at the non-second limiting plate (22) end;

[0016] Among them, two sets of latches (3) and latch components (4) cooperate to connect the first fence body (1) and the second fence body (2) into a fence body; a warning sign (5) can also be detached and installed on the fence body.

[0017] As an improvement of the present invention, the first fence body (1) includes:

[0018] The first fence panel (13) has a first post (11) vertically connected to one end and a first connecting post (14) vertically connected to the other end.

[0019] The second fence panel (15) has a first post (11) vertically connected to one end, and the other end is hinged to the first post (11) through several first hinges (16).

[0020] As a further improvement of the present invention, the first column (11) and the first connecting column (14) are both square columnar components with open ends and hollow interiors.

[0021] Both the first fence panel (13) and the second fence panel (15) are square plate-shaped components;

[0022] The first hinge (16) is a fixed hinge or a detachable hinge.

[0023] As a further improvement of the present invention, both the first fence panel (13) and the second fence panel (15) are provided with a plurality of openings.

[0024] Among them, the upper part of the first column (11) and the first connecting column (14) are also provided with a first connecting through hole adapted to the connecting plate of the warning sign (5).

[0025] As a further improvement of the above-mentioned utility model, the second fence body (2) has the same shape, structure and size as the first fence body (1). The second fence body (2) includes a third fence guard plate (23), a second connecting column (24), a fourth fence guard plate (25) and a second hinge (26).

[0026] As a further improvement of the above-mentioned utility model, both the first limiting plate (12) and the second limiting plate (22) are long strip-shaped plate members. Among them, the first limiting plate (12) is vertically connected to the inner side of the first column (11) at one end of the first fence guard plate (13); the second limiting plate (22) is vertically connected to the inner side of the second column (21) at one end of the third fence guard plate (23).

[0027] As a further improvement of the above-mentioned utility model, the bolt catch (3) is connected above the first column (11) at the opposite end of the first limiting plate (12), and the bolt catch (3) is connected above the second column (21) at the opposite end of the second limiting plate (22);

[0028] Among them, the bolt catch (3) is integrally in a "U" shape or an "Ω" shape structure;

[0029] As a further improvement of the above-mentioned utility model, the bolt assembly (4) includes:

[0030] A bolt seat (41), the bolt seat (41) is connected to the outer side above the second fence guard plate (15) near the corresponding bolt catch (3), and the bolt seat (41) is connected to the outer side above the fourth fence guard plate (25) near the corresponding bolt catch (3);

[0031] A bolt (42), the bolt (42) is respectively connected to the inside of the two bolt seats (41) in a sliding and adjustable manner;

[0032] Among them, a long slot is opened on the outer side of the middle part of the bolt seat (41), and two bayonets adapted to the bolt (42) are also opened below the middle part of the bolt seat (41).

[0033] As a further improvement of the above-mentioned utility model, the warning sign (5) includes:

[0034] A warning board (51), and safety warning words are provided on the warning board (51);

[0035] An installation column (52), the installation column (52) is connected to the middle part below the warning board (51), and a plurality of installation column connection holes are also opened through the lower part of the installation column (52);

[0036] The warning sign (5) is attached to at least one post, which includes two first posts (11), a first connecting post (14), two second posts (21), and a second connecting post (24).

[0037] As a further improvement of the present invention, a movable wheel (6) is connected to the bottom of the first fence body (1) and the second fence body (2). The movable wheel (6) is connected to the bottom of the first column (11) and the first connecting column (14) at both ends of the first fence guard plate (13), and the movable wheel (6) is connected to the bottom of the second column (21) and the second connecting column (24) at both ends of the third fence guard plate (23).

[0038] As a further improvement of the present invention, the movable wheel (6) is a directional wheel or a universal wheel, and a brake device is provided on the directional wheel or universal wheel to work in conjunction with it.

[0039] The working principle is as follows: When in use, the operator first checks whether the first hinge (16) on the first fence body (1) is intact and ensures that the first hinge (16) securely connects the second fence guard plate (15) and the first connecting post (14) together. Then, the operator checks whether the second hinge (26) on the second fence body (2) is intact and ensures that the second hinge (26) securely connects the fourth fence guard plate (25) and the second connecting post (24) together.

[0040] Then, the two operators cooperated to unfold the first fence body (1) and the second fence body (2) respectively, so that the inside forms a right angle; then, one operator held the first fence body (1) firmly, while the other moved the second fence body (2) flexibly so that it was precisely merged with the first fence body (1); then, the two operators passed the pins (42) of the two pin components (4) through the corresponding pin buckles (3) in turn, and moved the handle end of the pin (42) into place and rotated it into the slot near the end of the pin buckle (3). Thus, the installation of the fence body was successfully completed.

[0041] Next, the operator attaches the warning sign (5) to at least one post, which includes two first posts (11), a first connecting post (14), two second posts (21), and a second connecting post (24), thus completing the installation of the protective fence structure;

[0042] Finally, the two operators first adjust the protective fence structure to a square shape at the bottom, and then move the protective fence structure to the opening (8), so that each fence panel of the protective fence structure is located outside the opening (8), achieving the enclosure and protection of the opening (8) on all sides, thus completing the placement of the protective fence structure. After the placement is safe and reliable, the construction personnel can transport construction materials in the opening (8) or carry out corresponding subsequent construction work in the reserved opening.

[0043] Finally, as time goes by, once all the construction work is completed, the operators only need to take this utility model to other construction sections for continued protection, or when this utility model is no longer needed, the operators only need to clean and repair this utility model according to the actual situation, then disassemble and fold it before storing it in the designated tool storage warehouse, or simply leave it in the designated location for storage, so that it can be reused next time.

[0044] The beneficial effects of this utility model compared with the prior art are:

[0045] 1. This utility model provides a simple, effective, and uniformly styled opening protection structure. It utilizes simple materials to create a uniform fence that is easy to install and dismantle, convenient for reuse, reduces construction costs, effectively prevents objects from falling or people from accidentally entering, improves the overall safety of the construction site, reduces the sense of insecurity among pedestrians, and is beneficial to the management and maintenance of public areas. It has strong promotional value.

[0046] 2. This utility model has a simple structure and a novel and reasonable design. It utilizes a hinge structure and connecting shaft.

[0047] In conjunction with the connecting sleeve, it achieves ease of operation and maintenance. The hinge structure design allows for convenient opening and closing, as well as folding after disassembly for easy storage and transportation, facilitating necessary inspection, maintenance, or repair work by construction personnel. This operation is more flexible and efficient compared to fixed cover plates. On the other hand, it enhances safety, effectively preventing objects from falling or personnel from accidentally entering, thus improving the overall safety of the construction site. When opened, it provides necessary entry and exit points.

[0048] 3. The enclosure around the opening effectively prevents objects or people from sliding or falling from below the pre-reserved opening, reducing the risk of accidents. The enclosure around the opening better blocks objects or debris that may fall from above, protecting construction workers and pedestrians from injury. In particular, it facilitates the transportation and handling of construction workers, equipment and materials, reduces the sense of insecurity among pedestrians, and is conducive to the management and maintenance of public areas.

[0049] 4. The construction materials used in each component of this utility model are basically made from waste materials such as construction site templates, square tubes, and galvanized thin steel plates through simple on-site processing. This can save construction materials to the greatest extent and the construction method is simple. It has good economic and environmental benefits in green building construction.

[0050] 5. This utility model, by setting up warning signs, can remind construction workers to pay attention to the surrounding environment, avoid accidents, and ensure the safety of construction workers and passers-by. The warning signs, through conspicuous safety words, help reduce the risk of accidents such as falls and collisions.

[0051] 6. This utility model, by using warning signs for identification, helps on-site managers quickly identify potentially hazardous areas and conduct corresponding management and supervision. It not only protects the safety of construction workers but also reduces safety hazards during construction and simplifies accident handling.

[0052] 7. This utility model is also equipped with movable wheels, which can easily move the protective fence, reducing the difficulty of manual handling. At the same time, operators do not need to use complicated tools or exert effort to move it. The design of the movable wheels makes the movement of the entire fence simple and convenient, thereby saving a lot of time and labor. At the same time, it greatly improves the convenience, efficiency and safety of the fence body movement, adapts to various working environments, and extends the service life of the fence. It is more flexible and easier to maintain in daily use, and is especially suitable for places that need to be frequently adjusted or repositioned.

[0053] 8. The first, second, third, and fourth fence panels of this utility model are all provided with several through holes. The several through holes on the fence panels can not only effectively reduce weight and facilitate installation and operation, but also reduce costs, improve air permeability, reduce wind pressure, and prevent water accumulation, thereby improving overall safety and practicality. At the same time, this design also helps to improve the economy and aesthetics of the protective fence. Attached Figure Description

[0054] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0055] Figure 1 This is one of the schematic diagrams showing the usage state of this utility model;

[0056] Figure 2 This is the second schematic diagram of the usage state of this utility model;

[0057] Figure 3 This is the third schematic diagram of the usage state of this utility model;

[0058] Figure 4This is the fourth schematic diagram of the usage state of this utility model;

[0059] Figure 5 This is a schematic diagram showing the connection relationship between the first fence body (1) and the second fence body (2) of this utility model;

[0060] Figure 6 This is a schematic diagram of the structure of the first fence body (1) of this utility model;

[0061] Figure 7 This is a partial structural schematic diagram of the first fence body (1) of this utility model;

[0062] Figure 8 This is an exploded view of the second fence body (2) of this utility model;

[0063] Figure 9 This is a partial structural schematic diagram of the second fence body (2) of this utility model;

[0064] Figure 10 This is a schematic diagram of the overall structure of another design of this utility model;

[0065] In the figure, the numbers are: 1—first fence body, 11—first post, 12—first limiting plate, 13—first fence guard plate, 14—first connecting post, 15—second fence guard plate, 16—first hinge;

[0066] 2—Second fence body, 21—Second post, 22—Second limiting plate, 23—Third fence guard plate, 24—Second connecting post, 25—Fourth fence guard plate, 26—Second hinge;

[0067] 3—Pin latch;

[0068] 4—Pin assembly, 41—Pin holder, 42—Pin;

[0069] 5—Warning sign, 51—Warning board, 52—Mounting post;

[0070] 6—Moving wheels;

[0071] 7— Bolt assembly;

[0072] 8—Entrance. Detailed Implementation

[0073] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0074] In summary, a more specific embodiment of this utility model is as follows:

[0075] Example 1

[0076] like Figure 1 He Ru Figure 9 As shown, an improved protective fence for construction openings includes:

[0077] The first fence body 1 has a first post 11 vertically connected to both ends of the first fence body 1, and a first limiting plate 12 is connected inside the first post 11 at one end.

[0078] The second fence body 2 has two ends vertically connected to second posts 21, and a second limiting plate 22 is connected inside the second post 21 at one end.

[0079] The pin buckle 3 is connected to the top of the first column 11 at the first limiting plate 12 and the top of the second column 21 at the second limiting plate 22 respectively;

[0080] The pin assembly 4 is connected to the top of the first fence body 1 at the non-first limiting plate 12 end and the top of the second fence body 2 at the non-second limiting plate 22 end.

[0081] Among them, two sets of latches 3 and latch components 4 cooperate to connect the first fence body 1 and the second fence body 2 to form the fence body; a warning sign 5 can also be detached and installed on the fence body.

[0082] Furthermore, such as Figure 6 and Figure 7 As shown, the first fence body 1 includes:

[0083] The first fence panel 13 has a first post 11 vertically connected to one end and a first connecting post 14 vertically connected to the other end.

[0084] The second fence panel 15 has a first post 11 vertically connected to one end, and the other end is hinged to the first post 11 via several first hinges 16.

[0085] Specifically, both the first column 11 and the first connecting column 14 are square columnar components with open ends and hollow interiors.

[0086] Both the first fence panel 13 and the second fence panel 15 are square plate-shaped components;

[0087] The first hinge 16 is a fixed hinge or a detachable hinge.

[0088] Further, a plurality of through holes are also formed in both the first fence guard plate 13 and the second fence guard plate 15.

[0089] Among them, first connection through holes adapted to the connection plates of the warning sign 5 are also formed through the upper parts of the first upright post 11 and the first connecting upright post 14.

[0090] Further, the second fence body 2 has the same shape, structure and size as the first fence body 1. The second fence body 2 includes a third fence guard plate 23, a second connecting upright post 24, a fourth fence guard plate 25 and a second hinge 26.

[0091] In the present utility model, both the first hinge 16 and the second hinge 26 are movable hinges or detachable hinges, and the middle rotating shaft of the detachable hinge structure is detachable; the third fence guard plate 23 is the same as the first fence guard plate 13, the second connecting upright post 24 is the same as the first connecting upright post 14, the fourth fence guard plate 25 is the same as the second fence guard plate 15, and the second hinge 26 is completely identical to the first hinge 16 in shape, structure and size.

[0092] Further, both the first limiting plate 12 and the second limiting plate 22 are long strip-shaped plate members. Among them, the first limiting plate 12 is vertically connected to the inside of the first upright post 11 at one end of the first fence guard plate 13; the second limiting plate 22 is vertically connected to the inside of the second upright post 21 at one end of the third fence guard plate 23.

[0093] Further, the bolt catch 3 is connected above the first upright post 11 at the opposite ends of the first limiting plate 12, and the bolt catch 3 is connected above the second upright post 21 at the opposite ends of the second limiting plate 22;

[0094] Among them, the bolt catch 3 is integrally in a "ji" shape or an "Ω" shape structure;

[0095] Further, as Figure 9 shown, the bolt assembly 4 includes:

[0096] A bolt seat 41, the bolt seat 41 is connected to the outside above the second fence guard plate 15 near the corresponding bolt catch 3, and the bolt seat 41 is connected to the outside above the fourth fence guard plate 25 near the corresponding bolt catch 3;

[0097] A bolt 42, the bolt 42 is respectively connected to the inside of the two bolt seats 41 in a sliding and adjustable manner;

[0098] Among them, a long slot is formed on the outside of the middle part of the bolt seat 41, and two bays adapted to the bolt 42 are also formed below the middle part of the bolt seat 41.

[0099] Further, as Figure 4 shown, the warning sign 5 includes:

[0100] Warning board 51, with safety warning words on it;

[0101] Mounting post 52 is connected to the lower middle part of warning plate 51, and several mounting post connection holes are also opened through the lower part of mounting post 52.

[0102] The warning sign 5 is installed on top of at least one post, including two first posts 11, a first connecting post 14, two second posts 21, and a second connecting post 24.

[0103] In this utility model, the warning sign 5 can be directly sleeved on the top of the column, or it can be sleeved on the top of the column and then connected and secured together by a bolt assembly. The bolt assembly includes a bolt and a nut. The nut is tightened and installed on the end of the bolt to play a fastening and limiting role. The bolt is a hexagonal bolt or a flat-head bolt, and the nut is a hexagonal nut or a flat-head nut.

[0104] Before use, an improved construction site opening protection fence of the above design structure needs to be manufactured and installed as a backup.

[0105] Before use, operators should first confirm the size and shape of the opening 8 that needs to be protected at the construction site to ensure that the structural dimensions of the protective fence match the actual needs.

[0106] During use, the operator first checks whether the first hinge 16 on the first fence body 1 is intact and ensures that the first hinge 16 securely connects the second fence guard plate 15 to the first connecting post 14. Then, the operator checks whether the second hinge 26 on the second fence body 2 is intact and ensures that the second hinge 26 securely connects the fourth fence guard plate 25 to the second connecting post 24.

[0107] Then, the two operators work together to unfold the first fence body 1 and the second fence body 2 respectively, so that the inside forms a right angle; then, one operator holds the first fence body 1 firmly, while the other moves the second fence body 2 flexibly so that it is precisely merged with the first fence body 1; then, the two operators pass the pins 42 of the two pin assemblies 4 through the corresponding pin buckles 3 in turn, and after moving the handle end of the pin 42 into place, rotate it and lock it into the slot near the end of the pin buckle 3. At this point, the installation of the fence body is successfully completed.

[0108] Next, the operators attach the warning signs 5 to at least one post, which includes two first posts 11, a first connecting post 14, two second posts 21 and a second connecting post 24, thus completing the installation of the protective fence structure.

[0109] Finally, the two operators first adjusted the protective fence structure to a square shape at the bottom, and then moved the protective fence structure to the opening 8, so that each fence panel of the protective fence structure was located outside the opening 8, thus completing the installation of the protective fence structure.

[0110] When construction is completed or the protective fence structure is no longer needed, remove it from opening 8 while maintaining a safe distance; then fold and store it for future use. Alternatively, after removing warning sign 5, separate the first fence body 1 and the second fence body 2 for cleaning and storage to ensure reliability and safety for future use.

[0111] During the above installation process, there are several different installation methods for the warning sign 5. The first method involves the operator confirming the number and location of the warning signs 5 based on the specific situation, and then directly fitting the mounting post 52 of the warning sign 5 onto the corresponding column. The second method involves the operator confirming the number, location, and height of the warning signs 5 based on the specific situation. Since the mounting post 52 has multiple coaxial through-holes at its lower part and multiple through-holes on the top of each column, after placing the mounting post 52 inside the column and confirming the installation position of the mounting post through-holes, bolts are passed through the through-holes and mounting post through-holes, and then nuts are tightened to complete the secure connection of the warning sign 5.

[0112] Example 2

[0113] This embodiment 2 is the same as embodiment 1, except that another design structure of this utility model is as follows. Figure 10 As shown, movable wheels 6 are also connected to the bottom of the first fence body 1 and the second fence body 2. The movable wheels 6 are respectively connected to the bottom of the first upright post 11 and the first connecting post 14 at both ends of the first fence guard plate 13, and the movable wheels 6 are respectively connected to the bottom of the second upright post 21 and the second connecting post 24 at both ends of the third fence guard plate 23.

[0114] Specifically, the movable wheel 6 is a directional wheel or a swivel wheel, and a braking device is also provided on the directional wheel or swivel wheel to work in conjunction with it.

[0115] In this embodiment 2, because the protective fence structure is equipped with four wheels 6 with brakes at its bottom corners, the operator moves the fence structure by releasing the brakes on the wheels 6, thus moving it to the opening 8. This ensures that all fence panels are positioned outside the opening 8, completing the placement of the protective fence structure. The presence of wheels 6 allows for easy movement of the protective fence, reducing the difficulty of manual handling. Operators do not need to use complex tools or exert considerable effort to move it. The wheel design makes moving the entire fence simple and convenient, saving significant time and labor. Simultaneously, it greatly improves the ease, efficiency, and safety of moving the fence, adapting to various working environments and extending its service life. It is more flexible and easier to maintain in daily use, making it particularly suitable for locations requiring frequent repositioning or adjustment.

[0116] The specific usage is the same as in Example 1, and will not be repeated here.

[0117] Furthermore, from the inside out, injection molding layer, anti-rust layer, waterproof layer and warning layer are sequentially provided on the outer surfaces of the first fence body 1, the second fence body 2 and the warning sign 5. The warning layer is coated with fluorescent powder.

[0118] Specifically, in this utility model, a polymer wear-resistant material is injection molded onto the injection molding layer; the anti-rust layer includes an epoxy zinc-rich primer and a chlorinated rubber topcoat, as well as an epoxy micaceous iron oxide intermediate paint located between the epoxy zinc-rich primer and the chlorinated rubber topcoat; the waterproof layer is a polyurethane waterproof coating; and the warning layer is a reflective warning tape, reflective film, or reflective paint of a single color or a mixture of multiple colors.

[0119] The exterior of this utility model is coated with anti-rust paint and a waterproof layer, which can prevent rusting and extend the service life of the entire device. It is environmentally friendly and saves resources. At the same time, the exterior of the device is coated with a self-illuminating fluorescent material, which can clearly mark the location of the laying device at night or in dark indoor or underground construction environments. It can effectively play a safety warning role, improve visibility, make it easy for people to identify, and increase safety in construction and life.

[0120] Meanwhile, in this utility model, all connections referred to are fixed connections, movable connections, or detachable connections. Among them, fixed connections are welded connections or directly processed into an integral structure; movable connections, detachable connections, or split structures are hinged connections, internal and external threaded connections, bayonet connections, plug-in sleeves, bolt assembly connections, or screw connections.

[0121] Finally, it should be noted that the specific embodiments of this utility model have been described in detail above with reference to the accompanying drawings. However, this utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made to it.

Claims

1. An improved protective fence for construction openings, characterized in that, Comprising: The first fence body (1), with first columns (11) vertically connected to both ends of the first fence body (1), and a first limiting plate (12) connected inside the first column (11) at one end; The second fence body (2), with second columns (21) vertically connected to both ends of the second fence body (2), and a second limiting plate (22) connected inside the second column (21) at one end; Latch catches (3), which are respectively connected above the first column (11) at the first limiting plate (12) and above the second column (21) at the second limiting plate (22); Latch assemblies (4), which are respectively connected above the first fence body (1) at the non-first limiting plate (12) end and above the second fence body (2) at the non-second limiting plate (22) end; Among them, two sets of latch catches (3) and latch assemblies (4) cooperate with each other to connect the first fence body (1) and the second fence body (2) into a fence body; a warning sign (5) is also detachably installed on the fence body.

2. An improved protective fence for construction openings according to claim 1, characterized in that, The first fence body (1) includes: The first fence guard plate (13), with a first column (11) vertically connected to one end of the first fence guard plate (13), and a first connecting column (14) vertically connected to the other end; The second fence guard plate (15), with a first column (11) vertically connected to one end of the second fence guard plate (15), and the other end is hinged to the first column (11) through several first hinges (16).

3. An improved protective fence for construction openings according to claim 2, characterized in that, Both the first column (11) and the first connecting column (14) are overall square columnar members with openings at both ends and hollow interiors; Both the first fence guard plate (13) and the second fence guard plate (15) are square plate-like members; The first hinge (16) is a fixed hinge or a detachable hinge.

4. An improved protective fence for construction openings according to claim 3, characterized in that, A number of through holes are also drilled through both the first fence guard plate (13) and the second fence guard plate (15); Among them, first connecting through holes adapted to the connecting plates of the warning sign (5) are also drilled through the upper parts of the first column (11) and the first connecting column (14).

5. An improved protective fence for construction openings according to claim 1, characterized in that, The second fence body (2) has the same shape, structure and size as the first fence body (1), and the second fence body (2) includes a third fence guard plate (23), a second connecting column (24), a fourth fence guard plate (25) and a second hinge (26).

6. An improved protective fence for construction openings according to claim 1, characterized in that, Both the first limiting plate (12) and the second limiting plate (22) are strip-shaped plate members. Among them, the first limiting plate (12) is vertically connected to the inside of the first column (11) at one end of the first fence guard plate (13); the second limiting plate (22) is vertically connected to the inside of the second column (21) at one end of the third fence guard plate (23).

7. An improved protective fence for construction openings according to claim 1, characterized in that, The latch catch (3) is connected above the first column (11) at the opposite end of the first limiting plate (12), and the latch catch (3) is connected above the second column (21) at the opposite end of the second limiting plate (22); Among them, the latch catch (3) is overall in a "U" shape or an "Ω" shape structure; The latch assembly (4) includes: The pin seat (41) is connected to the outer side of the second fence panel (15) near the corresponding pin buckle (3), and the pin seat (41) is connected to the outer side of the fourth fence panel (25) near the corresponding pin buckle (3). The pins (42) are slidably connected to the two pin seats (41) respectively; Among them, the middle outer side of the pin seat (41) is provided with an elongated slot, and the lower middle part of the pin seat (41) is provided with two slots that are compatible with the pin (42).

8. An improved protective fence for construction openings according to claim 1, characterized in that, The warning sign (5) includes: Warning board (51), with safety warning words on the warning board (51); Mounting post (52) is connected to the lower middle part of the warning plate (51), and several mounting post connection holes are also provided in the lower part of the mounting post (52); The warning sign (5) is attached to at least one post, which includes two first posts (11), a first connecting post (14), two second posts (21), and a second connecting post (24).

9. An improved protective fence for construction openings according to claim 1 or 5, characterized in that, At the bottom of the first fence body (1) and the second fence body (2), there are also movable wheels (6). The movable wheels (6) are respectively connected to the bottom of the first post (11) and the first connecting post (14) at both ends of the first fence guard plate (13), and the movable wheels (6) are respectively connected to the bottom of the second post (21) and the second connecting post (24) at both ends of the third fence guard plate (23).

10. An improved protective fence for construction openings according to claim 9, characterized in that, The movable wheel (6) is either a directional wheel or a swivel wheel, and a brake device is also provided on the directional wheel or swivel wheel to work in conjunction with it.

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