Corridor extension protective fence for building construction

Abstract

The invention discloses a corridor extension protective fence for building construction, and belongs to the field of building fences. The corridor extending protective fence for building construction comprises a plurality of grids and foot pads embedded at the bottoms of the grids, the foot pads are clamped at the edges of the two sides of a corridor and are symmetrically arranged, the foot pads in the same group are connected through first steel pipes, the grids are inserted into the two adjacent foot pads, and the grids and the foot pads are assembled into the protective fence. The whole foot pad is of a T-shaped structure, the lower end of the foot pad is in threaded connection with a screw, and the front end of the screw is connected with an abutting block through a bearing. The stand columns of the grid are connected with the kidney-shaped holes in the different positions of the foot pads in an inserted mode, the outward extension width of the fence can be directly adjusted, the outward extension width of the protective fence relative to a corridor can be adjusted, the requirements of different construction scenes are met, the T-shaped clamping structures of the foot pads are directly clamped to the edge of the corridor, and the safety of the fence is improved. The screw rod is matched to push the abutting block to form lateral supporting, and destructive connecting pieces such as expansion bolts are not needed in the whole process.

Description

Technical Field

[0001] This invention relates to the field of building fence technology, and more particularly to a protective fence for extending a corridor during building construction. Background Technology

[0002] During construction, corridors serve as important passageways for people and materials, so it is necessary to install railings at the edges of corridors for edge protection to avoid safety hazards such as falls.

[0003] In traditional construction, protective fences often rely on expansion bolts and other connectors to fix them to the main structure of the corridor, which can cause permanent damage to walls and floors. This requires additional manpower and resources for repairs later, increasing construction costs and time. At the same time, some fences will occupy the original passage area of ​​the corridor after installation, further reducing the usable space. Construction workers frequently transport building materials and tools through the corridor, and the narrow passage space can easily lead to material congestion, which not only reduces construction efficiency but also poses a risk of collisions. Furthermore, there is a lack of effective protection for the corridor floor, and the dragging of treads and building materials during construction can easily cause wear and scratches to the corridor floor.

[0004] In addition, traditional protective structures are mostly monolithic designs, which are cumbersome to install and disassemble, and it is difficult to flexibly adjust the extension width according to construction needs. Moreover, their supporting structure is not stable enough and is prone to shaking when materials collide or people accidentally come into contact with them, posing a safety risk. Therefore, there is an urgent need for a temporary protective fence that does not damage the main structure of the corridor, can flexibly expand the three-dimensional space, facilitates construction and material delivery, and can protect the corridor floor. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of fence installation damage, low space utilization, and poor protection effect in the existing technology, and to propose a corridor extension protective fence for building construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A protective fence extending from a building construction corridor includes multiple grids and feet fitted at their bottoms. The feet are secured at the edges of the corridor on both sides and are symmetrically arranged. The feet in the same group are connected by a first steel pipe. The grids are inserted into two adjacent feet. Multiple grids and their feet are assembled into a protective fence. The feet are T-shaped in shape, and a screw is threaded to the lower end of the foot. The front end of the screw is connected to a stop block by a bearing. When the feet are secured at the edge of the corridor and connected and pulled by the first steel pipe, they are supported by the stop block against the side wall of the corridor. The grid includes a pair of posts, and a connecting frame is fitted between the posts. Multiple connecting shafts are arranged side by side on the connecting frame to form a grid.

[0007] Preferably, the pad includes a support block and a baffle integrally disposed on its lower surface, wherein the front end of the support block is raised upward and has a groove for the first steel pipe to be clamped, and the baffle is disposed at the junction of the raised part and the horizontal part of the support block.

[0008] Preferably, multiple sets of waist holes are symmetrically opened on the horizontal part of the baffle. During assembly, the two uprights of the grille are respectively inserted into one of the waist holes of two adjacent pads. The lower end of the upright is provided with a baffle that is wider than the waist hole. By inserting the upright into the waist holes at different positions on the pad, the extension width of the protective fence relative to the corridor is realized.

[0009] Preferably, the support block has a raised portion and a receiving groove above the tube groove. The receiving groove is centered horizontally along the raised portion, and the tube groove is centered vertically along the raised portion. A movable buckle is rotatably connected to the receiving groove by a pin, and the other end of the movable buckle is locked to the receiving groove by a pin. One end of the pin is provided with a shaft cap, and the other end is provided with a through hole. A pin is inserted into the through hole for limiting.

[0010] Preferably, when the first steel pipe is connected to the pipe groove, the movable buckle covers the surface of the first steel pipe and is locked with a pin, and multiple cross-shaped locking buckles are fixedly sleeved on the first steel pipe, with the cross-shaped locking buckles located inside the movable buckle.

[0011] Preferably, when multiple sets of foot pads span the corridor using the first steel pipe, the second steel pipe is connected to the cross-shaped locks on the same side fixed to the first steel pipe.

[0012] Preferably, the screw is threaded onto the baffle, and a limiting rod is symmetrically provided on the rear surface of the block, and the limiting rod extends backward through the baffle.

[0013] Preferably, a slot is provided on one side of the pair of uprights opposite each other, and the connecting frame is connected to the pair of uprights through the slot. The slot is a wedge-shaped structure with a larger inner side and a smaller outer side.

[0014] Preferably, the connecting frame has multiple mounting holes evenly distributed from the top surface downwards, and the mounting holes do not penetrate the bottom of the connecting frame, with the coupling inserted into the mounting holes.

[0015] Preferably, multiple rollers are sleeved on the connecting shaft. The rollers are made of plastic and have a hollow structure.

[0016] Compared with the prior art, the present invention provides a protective fence for extending a corridor during construction, which has the following advantages: 1. This construction corridor extension protective fence allows for direct adjustment of the fence's outward extension width by connecting the grid posts to the mounting holes at different positions. This adjustment caters to the needs of various construction scenarios. At the secondary extension level, the addition of a fourth and fifth steel pipe, along with matching mounting feet, forms a secondary extension frame, further expanding the usable space outside the corridor. This not only meets the basic protection needs of small-scale renovations but also accommodates the large space requirements for material storage and equipment transportation in large-scale construction projects, offering far greater flexibility than traditional fixed-size fences. Furthermore, stability is enhanced through an interwoven frame of "horizontal steel pipes + longitudinal steel pipes": the horizontal connecting steel pipes and the longitudinal reinforcing steel pipes form the basic support; the addition of a third steel pipe to reinforce the original mounting feet, along with the fourth and fifth steel pipes forming the secondary frame, combined with the double locking of the horizontal steel pipes by movable buckles and the lateral support of the blocks, effectively resists construction collisions and high-rise wind loads, preventing fence swaying or tilting and reducing the risk of material falling and personnel accidents.

[0017] 2. The protective railing extending from the corridor during construction uses a T-shaped interlocking structure with feet that directly engages with the edge of the corridor. With the help of screws, it pushes the blocks to form lateral support. No expansion bolts or other destructive connectors are needed throughout the process, completely avoiding drilling damage to the corridor walls and floors. This saves on later repair costs and construction time, making it especially suitable for existing building renovations or construction scenarios with high structural protection requirements.

[0018] 3. The protective fence extending from the corridor used in the construction site is made so that the posts and connecting frames are connected by wedge-shaped grooves with a larger inner side and a smaller outer side, making the connection more stable and less prone to falling off. At the same time, the cross-shaped locking buckle fixed on the first steel pipe cooperates with the second steel pipe to further enhance the overall structural strength of the protective fence. Furthermore, a hollow plastic roller is fitted on the connecting shaft of the grille. When materials are transferred inside the fence, the roller can rotate freely, which greatly reduces the friction between the materials and the connecting shaft. This not only avoids scratching the surface of building materials, such as pipes and plates, but also reduces the resistance of transfer and saves the physical strength and time of construction workers.

[0019] 4. The corridor extension protective fence for construction uses standardized designs for core components such as grilles and various steel pipes. The cross-locks / fasteners are compatible with common construction steel pipes, eliminating the need for customized special accessories. It can be used for decoration protection in low-rise dormitories and office buildings, as well as for external protection during the main construction of high-rise buildings. Its scenario compatibility far exceeds that of traditional single-function fences. In addition, all components use plug-in and snap-on connections, allowing for quick assembly / disassembly without complicated tools, improving the efficiency of construction preparation and completion.

[0020] The parts not involved in this device are the same as or can be implemented using existing technologies. This invention provides a temporary protective fence that does not damage the main structure of the corridor, can flexibly expand the three-dimensional space, facilitates construction and material delivery, and can protect the corridor floor. Attached Figure Description

[0021] Figure 1 This invention provides an assembly for extending protective fencing for building construction corridors. Figure 1 ; Figure 2 This invention provides an assembly for extending protective fencing for building construction corridors. Figure 2 ; Figure 3 This is a partial exploded view of a protective fence extending from a building construction corridor, as proposed in this invention. Figure 4 This is a schematic diagram of a protective fence structure for an extended corridor in building construction proposed in this invention; Figure 5 This is a diagram of the footing structure of a protective fence extending from a building construction corridor, as proposed in this invention. Figure 6 This is a grid structure diagram of a corridor extension protective fence for building construction proposed in this invention; Figure 7 This is a split structural diagram of a grid structure for a corridor extension protective fence for building construction proposed in this invention; Figure 8 This invention proposes a protective fence for extending corridors during building construction. Figure 7 Enlarged structural diagram of section A; Figure 9 This invention provides an assembly for extending protective fencing for building construction corridors. Figure 3 .

[0022] In the diagram: 101, grating; 1011, column; 1012, slot; 1013, baffle; 1014, connecting frame; 1015, mounting hole; 1016, coupling; 1017, roller; 102. Foot pad; 1021. Support block; 1022. Waist hole; 1023. Pipe groove; 1024. Movable buckle; 1025. Baffle; 1026. Pipe hole; 1027. Abutment block; 1028. Screw; 1029. Limiting rod; 103. First steel pipe; 104. Second steel pipe; 105. Third steel pipe; 106. Fourth steel pipe; 107. Fifth steel pipe. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] Example 1

[0026] This embodiment provides the basic structure for a protective fence extending from a corridor in a building construction site. It is suitable for construction scenarios where the space requirement outside the corridor is small and the protection strength requirement is moderate, such as construction projects for factories, office buildings, etc.

[0027] See Figure 1 and Figure 2 This is a structural diagram of the extended protective fence for building construction corridors in this embodiment. The protective fence mainly consists of three parts: a grid assembly 101, a foot assembly 102, and steel pipe connectors. The three parts work together to achieve protection and space extension functions, adapting to the corridor protection needs in small and medium-sized construction scenarios. Among them, the foot assembly 102 serves as the supporting foundation of the entire fence and adopts a T-shaped integrated structure, specifically including a support block 1021 and a baffle 1025. The lower surface of the support block 1021 and the top of the baffle 1025 are fixedly connected by welding, and the connection strength meets the load-bearing and impact resistance requirements during construction. Furthermore, the baffle 1025 is precisely set at the junction of the raised part and the horizontal part of the support block 1021, forming a locking structure that can be locked onto the edges of both sides of the corridor, allowing for initial positioning without the need for additional fasteners.

[0028] The front end of the support block 1021 is raised upwards, and a tube groove 1023 is opened in the center of the raised part along the longitudinal direction. The inner wall of the tube groove 1023 is polished to avoid sharp edges scratching the surface of the steel pipe. A first steel pipe 103 is installed in the tube groove 1023 of the same group of support blocks 1021. The first steel pipe 103 spans across the corridor and connects the pads 102 of the same group to form a transverse support beam, ensuring that the pads 102 can be stably erected on the edge of the corridor. There is no need to drill holes in the corridor wall or floor for fixing, thus avoiding damage to the main structure of the corridor from the root. The cross-sectional dimensions of the tube groove 1023 are adapted to the outer diameter of the first steel pipe 103, and the gap is controlled between 1-2mm. This ensures that the first steel pipe 103 can be smoothly inserted and prevents the steel pipe from shaking randomly in the groove, realizing a reliable connection and traction between the symmetrical pads 102 of the same group.

[0029] To further prevent the first steel pipe 103 from sliding or falling out of the pipe groove 1023, a receiving groove is provided on the raised part of the support block 1021 above the pipe groove 1023. The receiving groove is set horizontally and centrally along the raised part. A movable buckle 1024 is rotatably connected to the groove by a pin. The length of the movable buckle 1024 is completely matched with the length of the receiving groove, ensuring that the movable buckle 1024 can be completely stored in the receiving groove without occupying extra space. After the first steel pipe 103 is inserted into the pipe groove 1023, the movable buckle 1024 is rotated to cover the surface of the first steel pipe 103. The side of the movable buckle 1024 away from the rotating end is locked to the receiving groove by another set of pins. One end of the pin is provided with a shaft cap and the other end is provided with a through hole. A pin is inserted into the through hole for double limiting. Through the combination of "pin + pin" fixing method, the axial and radial displacement of the first steel pipe 103 is completely restricted, ensuring that the first steel pipe 103 will not loosen during construction.

[0030] Meanwhile, multiple cross-shaped locking buckles are fixedly sleeved on the first steel pipe 103. The number of cross-shaped locking buckles corresponds one-to-one with the number of sets of foot pads 102, and all cross-shaped locking buckles are located inside the movable buckle 1024, precisely avoiding the rotation trajectory of the movable buckle 1024, thus preventing positional interference between the two during installation or use. When multiple sets of foot pads 102 span across the corridor via the first steel pipe 103, refer to... Figure 3 In this embodiment, a second steel pipe 104 is connected between the cross-shaped locking buckles of adjacent pads 102 on the same side. The second steel pipe 104 is set perpendicularly to the first steel pipe 103 to form a mesh support frame that is interwoven horizontally and vertically. This frame structure can evenly distribute the external force on the fence to each pad 102, greatly improve the overall structural stability of the fence, and effectively prevent the fence from shaking due to material collisions, personnel leaning on it, etc. during construction.

[0031] See Figure 4 and Figure 5 In this embodiment, multiple sets of waist holes 1022 are symmetrically opened on the horizontal part of the baffle 1025. The waist holes 1022 are evenly distributed along the length of the baffle 1025. The spacing of each set of waist holes 1022 is set according to the common extension width requirements in building construction (such as 30cm, 50cm, 80cm), providing multi-level adjustment space for the installation of the grille 101 assembly, allowing the columns 1011 of the grille 101 assembly to be flexibly inserted. See reference. Figure 6 , Figure 7 and Figure 8In this embodiment, the grille 101 assembly includes a pair of posts 1011 and a connecting frame 1014. The opposite side of the posts 1011 is provided with a wedge-shaped groove 1012 that is larger inside and smaller outside. The wedge structure design utilizes the "wedge tightening effect" to enhance the connection stability. The two sides of the connecting frame 1014 are perfectly matched with the shape of the groove 1012 and can be directly fitted between the two posts 1011. Quick assembly can be achieved without the need for bolts or other connectors, which greatly shortens the fence construction time.

[0032] Multiple mounting holes 1015 are evenly distributed from the top surface downwards on the connecting frame 1014. These mounting holes do not penetrate the bottom of the connecting frame 1014, forming a blind hole structure. This ensures the installation stability of the coupling 1016 and prevents rainwater, dust, and other impurities from seeping into the connecting frame 1014 and causing corrosion. A coupling 1016 is inserted into each mounting hole 1015, and the coupling 1016 is perpendicular to the connecting frame 1014. Multiple couplings 1016 together form a horizontal grid structure. The gap width of this structure is strictly controlled within 15cm, effectively preventing construction tools and small materials from falling through the gaps in the fence, thus reducing the risk of injury from height. In addition to reducing the risk of falling objects, the connecting shaft 1016 is fitted with multiple hollow plastic rollers 1017. The rollers 1017 are made of high-strength polyethylene, which has good wear resistance and impact resistance, and can rotate freely along the connecting shaft 1016. When materials such as steel pipes, steel bars, and plates are transferred inside the fence, the rollers 1017 can convert the sliding friction between the materials and the connecting shaft 1016 into rolling friction, which greatly reduces the frictional loss between the materials and the connecting shaft 1016. This not only prevents the surface of the building materials from being scratched and affecting their later use, but also reduces the resistance during material transfer, saves the physical exertion of construction workers, and improves construction efficiency.

[0033] Furthermore, a baffle 1013 is integrally formed at the lower end of the column 1011. The width of the baffle 1013 is greater than the width of the waist hole 1022. When the column 1011 is inserted into the waist hole 1022, the baffle 1013 can be tightly locked into the lower surface of the baffle 1025 to form an axial limit, effectively preventing the column 1011 from falling out of the waist hole 1022 due to its own weight or external force, and ensuring the reliability of the connection between the grille 101 assembly and the pad 102.

[0034] It is worth noting that construction workers can choose to connect the waist holes 1022 at different positions on the pad 102 to the column 1011 according to the actual extension space required on the outside of the corridor. By adjusting the installation position of the grid 101 component, the extension width of the protective fence relative to the corridor can be flexibly changed, easily meeting the space requirements of different construction scenarios such as temporary material stacking on the outside of the corridor and small equipment operation space. Its adaptability is far greater than that of traditional fixed-width protective fences.

[0035] See Figure 5To further enhance the support stability of the foot pad 102 and prevent it from tilting outwards due to external force, a screw rod 1028 is threaded onto the baffle 1025. The screw rod 1028 is horizontally positioned, and its front end is connected to a stop block 1027 via a deep groove ball bearing. The bearing ensures that the stop block 1027 only moves horizontally when the screw rod 1028 rotates, and does not rotate synchronously with the screw rod 1028. The contact surface of the stop block 1027 is designed to conform to the shape of the corridor side wall and is a planar structure. A rubber anti-slip pad is attached to the contact surface, which increases the friction with the corridor side wall and prevents the stop block 1027 from scratching the wall surface. Two limiting rods 1029 are symmetrically welded to the rear surface of the stop block 1027. The limiting rods 1029 and... The screw 1028 is set parallel to and extends backward through the baffle 1025. The limiting rod 1029 and the baffle 1025 are fitted with a clearance to ensure that the abutment block 1027 can move smoothly. When the pad 102 is stuck on the edge of the corridor, it is first pulled across by the first steel pipe 103 to initially fix the lateral position of the pad 102. Then, the screw 1028 is rotated to push the abutment block 1027 forward until the abutment block 1027 is tightly against the side wall of the corridor, forming a reliable lateral support. At the same time, the limiting rod 1029 can effectively limit the movement trajectory of the abutment block 1027 to prevent the abutment block 1027 from shifting or tilting when under force, ensuring that the pad 102 as a whole will not tilt to the outside of the corridor due to the force on the outside of the fence, thus ensuring the safety of the fence in use from a structural point of view.

[0036] More importantly, this embodiment fully considers the needs of the entire corridor construction cycle, achieving "coordinated adaptation between the protective fence and subsequent construction." When the corridor is being paved, the pouring formwork can be directly fixed between adjacent support feet 102, utilizing the structural strength of the support feet 102 themselves to compress and support the formwork. Alternatively, commonly used supporting materials in existing building construction processes, such as timber and steel pipes, can be used to assist in fixing the formwork, eliminating the need for additional dedicated support frames and simplifying the preparatory work for paving. During paving, a segmented construction method can be adopted. Since the first steel pipe 103 is erected above the corridor, maintaining a sufficient distance from the paving surface, ... This will not hinder the cement pouring operation, and construction workers can carry out operations such as placing and vibrating the concrete normally. When polishing is required after the concrete is poured, a portion of the first steel pipe 103 can be removed according to the working range of the polishing equipment to avoid the steel pipe obstructing the polishing area. On the pad 102 where the first steel pipe 103 has been removed, a short pipe (the length of the short pipe is cut according to actual needs, usually 1 / 3 to 1 / 2 of the original length of the first steel pipe 103) is connected through the pipe groove 1023. The short pipe is still equipped with cross fasteners at the original spacing, and the second steel pipe 104 is used to connect to the cross fasteners. One or both ends of the second steel pipe 104 are fixed to the first steel pipe that has not been removed. A temporary support frame is formed on the cross-shaped fastener at the end of pipe 103. This frame ensures the stability of the remaining fence structure and provides sufficient operating space for polishing equipment, facilitating fine polishing of the floor by floor grinders or manual labor. After the floor is completely dry and cured, the first steel pipe 103 is reinstalled in its original position. At this time, scaffolding netting commonly used in construction can be laid on the first steel pipe 103. The netting is fixed to the steel pipe with cable ties, forming a protective layer covering the corridor. This separates the completed floor from the subsequent construction area, effectively preventing scratches, abrasions, and other damage to the floor caused by falling materials or people stepping on it during subsequent construction, thus reducing the amount of floor repair work. Finally, when the entire construction project is completed and the protective fence is removed, the installation of foot pad 102 will leave an installation pit at the edge of the corridor floor that matches the shape of the bottom of foot pad 102. This installation pit can be directly used as the installation base for the corridor railing during the decoration phase. The construction workers only need to drill holes in the installation pit, embed the railing feet into the holes, and then fill and smooth them with cement mortar. This not only saves the steps of "drilling and leveling" in traditional railing installation, avoiding secondary damage to the intact floor, but also enables precise positioning of the railing through the position of the installation pit, ensuring the straightness and aesthetics of the railing installation, and achieving "seamless connection between the use of the protective fence and subsequent decoration".

[0037] Example 2

[0038] Based on Example 1, this embodiment provides a protective fence structure with secondary extension function for construction scenarios with large space requirements on the outside of corridors, such as protection of material storage areas on the outside of corridors during the construction of large building main structures, protection of equipment transportation channels on the outside of high-rise corridors, and protection of temporary work platforms during large-area decoration. Through the combined design of "basic frame + extension frame", the usable space on the outside of the corridor is further expanded, while ensuring the stability and safety of the extended structure.

[0039] See Figure 1 , Figure 8 as well as Figure 9 Building upon the basic structure of Embodiment 1, this embodiment adds a fourth steel pipe 106 and a fifth steel pipe 107 to the already installed foot pad 102 assembly at the corridor edge, forming a secondary extended support frame. This frame is similar in structure to the basic frame but complementary in function, together constituting a larger-scale protection system. Specifically, the fourth steel pipe 106 is arranged parallel to the first steel pipe 103 and fixed to the baffle 1025 of the foot pad 102 by a U-shaped hoop. The U-shaped hoop is made of Q235 carbon steel and has sufficient load-bearing capacity; the open end of the U-shaped hoop faces downwards. After passing through the waist hole 1022 on the baffle 1025, a wooden strip (usually 50mm×100mm) is fitted at the lower end. The length of the wooden strip is greater than the width of the waist hole 1022, forming a clamping structure of "steel pipe on top and wooden strip underneath". Then, the two ends of the U-shaped hoop are tightened with nuts to make the fourth steel pipe 106 tightly fixed above the baffle 1025. The wooden strip can effectively disperse the local pressure of the U-shaped hoop on the baffle 1025, avoid the baffle 1025 from deforming or cracking due to concentrated force, and extend the service life of the pad 102.

[0040] A pair of cross-shaped fasteners are welded and fixed to the fourth steel pipe 106. The two cross-shaped fasteners are located at both ends of the fourth steel pipe 106, and the fourth steel pipes 106 on adjacent pad 102 assemblies remain parallel to ensure that the fifth steel pipe 107 can be installed smoothly. The cross-shaped fasteners on adjacent fourth steel pipes 106 on the same side are connected together to the fifth steel pipe 107. The fifth steel pipe 107 is set perpendicular to the fourth steel pipe 106, forming a transverse-longitudinal interwoven support structure similar to the "first steel pipe 103 + second steel pipe 104" in Embodiment 1. This structure can provide... The secondary extension provides the same stability as the foundation, preventing the secondary frame from swaying due to the increased span. At the same time, the fifth steel pipe 107 is also equipped with a pad 102 assembly that is completely identical to the structure in Embodiment 1. The pad 102 and the fifth steel pipe 107 are also fixed by a U-shaped hoop through the waist hole 1022. The specifications of the U-shaped hoop and the arrangement of the timber are the same as the fixing method of the fourth steel pipe 106, ensuring the installation stability of the pad 102 on the fifth steel pipe 107 and providing reliable support for the subsequent installation of the grid 101 assembly.

[0041] After the installation of the secondary support frame is completed, the new grid 101 component is inserted into the waist hole 1022 of the pad 102 on the fifth steel pipe 107. The structure of the grid 101 component is exactly the same as that in Embodiment 1, including the column 1011 with wedge-shaped slot 1012, the interlocking connecting frame 1014, the plug-in connecting shaft 1016, and the plastic hollow roller 1017. The universality of the component ensures that the construction personnel do not need to relearn the installation method, reducing the difficulty of operation. By cooperating with the column 1011 and the waist hole 1022 at different positions, the width of the fence of the secondary extension part can be further adjusted so that the extension width of the secondary fence and the basic fence complement each other (e.g., if the basic fence extends by 50cm, the secondary fence extends by another 50cm, and the total extension width can reach 100cm). Finally, the protective fence extends outward relative to the secondary level of the corridor, greatly expanding the protection range and usable space outside the corridor, and meeting the needs of large-scale construction projects such as the large-scale stacking of materials and the temporary parking of large equipment.

[0042] See Figure 2 and Figure 8 Furthermore, considering that the secondary extension structure will increase the stress on the original pad 102 assembly, in order to prevent the original pad 102 from being damaged due to excessive stress, this embodiment also provides a pipe hole 1026 on the baffle 1025. The pipe hole 1026 is set along the height direction of the baffle 1025, located below the waist hole 1022. The diameter of the pipe hole 1026 is adapted to the outer diameter of the third steel pipe 105 to ensure that the third steel pipe 105 can be tightly inserted, forming a symmetrical pad in the same group. A third steel pipe 105 is horizontally inserted between the pipe holes 1026 of 102. The third steel pipe 105 is parallel to the first steel pipe 103 and the fourth steel pipe 106, forming a horizontal support beam located below the baffle 1025. A cross fastener is also fixedly sleeved on the third steel pipe 105 for limiting. The cross fastener corresponds to the position of the pipe hole 1026 to prevent the third steel pipe 105 from sliding in the pipe hole 1026 and to ensure that the third steel pipe 105 can stably play a supporting role.

[0043] The addition of the third steel pipe 105 significantly enhances the lateral connection strength between the same-side foot pads 102, distributing the force transferred from the secondary extension structure to the original foot pads 102 to the third steel pipe 105, preventing deformation or displacement of the foot pads 102 due to concentrated force. At the same time, the third steel pipe 105, together with the first steel pipe 103 and the fourth steel pipe 106, forms a three-layer lateral support structure, greatly improving the wind resistance and impact resistance of the entire fence structure. Even under conditions of high-rise construction or severe weather (such as strong winds), the stability of the fence can be guaranteed, effectively preventing the fence from tipping over due to external forces and ensuring the safety of construction personnel and materials.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A protective fence extending from a building construction corridor, comprising multiple grilles (101) and feet (102) fitted at their bottom, the feet (102) being secured at the edges of both sides of the corridor and symmetrically arranged, the feet (102) in the same group being connected by a first steel pipe (103), the grilles (101) being inserted into two adjacent feet (102), the multiple grilles (101) and their feet (102) being assembled into a protective fence, characterized in that: The pad (102) is T-shaped, and a screw (1028) is threaded to the lower end of the pad (102). The front end of the screw (1028) is connected to a stop block (1027) by a bearing. When the pad (102) is stuck on the edge of the corridor and is connected and pulled by the first steel pipe (103), it is supported by the stop block (1027) against the side wall of the corridor. The grid (101) includes a pair of columns (1011), and a connecting frame (1014) is embedded between the columns (1011). Multiple connecting shafts (1016) are arranged side by side on the connecting frame (1014) to form a grid.

2. The protective fence extending from a construction corridor according to claim 1, characterized in that: The foot pad (102) consists of a support block (1021) and a baffle (1025) integrally disposed on its lower surface. The front end of the support block (1021) is raised upward and has a groove (1023) for the first steel pipe (103) to be engaged. The baffle (1025) is disposed at the junction of the raised part and the horizontal part of the support block (1021).

3. The protective fence extending from a construction corridor according to claim 2, characterized in that: The baffle (1025) has multiple sets of waist holes (1022) symmetrically opened on the horizontal part. During assembly, the two columns (1011) of the grille (101) are respectively inserted into one of the waist holes (1022) of the two adjacent pads (102). The lower end of the column (1011) is provided with a baffle (1013) with a width greater than the waist hole (1022). By inserting the column (1011) into the waist holes (1022) at different positions on the pad (102), the extension width of the protective fence relative to the corridor is realized.

4. The protective fence extending from a construction corridor according to claim 2, characterized in that: The support block (1021) has a raised portion and a receiving groove above the tube groove (1023). The receiving groove is centered horizontally along the raised portion, and the tube groove (1023) is centered vertically along the raised portion. A movable buckle (1024) is rotatably connected to the receiving groove by a pin. The other end of the movable buckle (1024) is also locked to the receiving groove by a pin. One end of the pin is provided with a shaft cap, and the other end is provided with a through hole. A pin is inserted into the through hole for limiting.

5. A protective fence for extending a corridor during construction, as described in claim 4, characterized in that: When the first steel pipe (103) is connected to the pipe groove (1023), the movable buckle (1024) covers the surface of the first steel pipe (103) and is locked with a pin, and multiple cross buckles are fixedly sleeved on the first steel pipe (103), with the cross buckles located inside the movable buckle (1024).

6. A protective fence for extending a corridor during construction, as described in claim 5, characterized in that: When multiple sets of foot pads (102) span across the corridor using the first steel pipe (103), the second steel pipe (104) is connected to the cross locks on the same side fixed to the first steel pipe (103).

7. A protective fence for extending a corridor during construction, as described in claim 2, characterized in that: The screw (1028) is threaded onto the baffle (1025), and the rear surface of the abutment (1027) is symmetrically provided with a limiting rod (1029), and the limiting rod (1029) extends backward through the baffle (1025).

8. A protective fence for extending a corridor during construction, as described in claim 1, characterized in that: A slot (1012) is provided on one side of the pair of columns (1011), and the connecting frame (1014) is connected to the pair of columns (1011) through the slot (1012). The slot (1012) is a wedge-shaped structure with a larger inner side and a smaller outer side.

9. A protective fence for extending a corridor during construction, as described in claim 1, characterized in that: The connecting frame (1014) has a plurality of mounting holes (1015) evenly distributed from the top surface downwards, and the mounting holes (1015) do not penetrate the bottom of the connecting frame (1014). The connecting shaft (1016) is inserted into the mounting holes (1015).

10. A protective fence for extending a corridor during construction, as described in claim 9, characterized in that: Multiple rollers (1017) are sleeved on the connecting shaft (1016). The rollers (1017) are made of plastic and have a hollow structure.

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