Corridor extension protective fence for building construction

Abstract

The application discloses a corridor extension protective fence for building construction and belongs to the field of building fences. The corridor extension protective fence for building construction comprises a plurality of grates and foot pads embedded at the bottom of the grates, the foot pads are clamped at the edges of both sides of the corridor and are symmetrically arranged, the foot pads in the same group are connected through first steel pipes, the grates are inserted into two adjacent foot pads, a plurality of grates and foot pads are assembled into a protective fence, the foot pads are integrally formed in a T-shaped structure, a screw rod is threadedly connected to the lower end of the foot pad, and a resisting block is connected to the front end of the screw rod through a bearing. The column of the grate is inserted into the waist hole at different positions of the foot pad, the extension width of the fence outward can be directly adjusted, the extension width of the protective fence outward relative to the corridor can be adjusted, the requirements of different construction scenes are met, the T-shaped clamping structure of the foot pad is directly clamped at the edge of the corridor, the screw rod pushes the resisting block to form lateral support, and no destructive connecting pieces such as expansion bolts are needed throughout the process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building fences, in particular to a corridor extension protective fence for building construction. BACKGROUND

[0002] In the process of building construction, the corridor is an important channel for personnel to pass and materials to transport, so it is necessary to set up a fence at the edge of the corridor to prevent edge protection and avoid safety hazards such as falling.

[0003] In traditional construction, the protective fence is mostly fixed with the main structure of the corridor by expansion bolts and other connecting parts, which will cause permanent damage to the wall, floor and other structures. Additional manpower and resources are needed for repair in the later stage, increasing construction cost and construction period. At the same time, some fences will occupy the original passing area of the corridor after installation, further compressing the available space. The narrow passing space is easy to cause material congestion, which not only reduces the construction efficiency, but also exists collision. In addition, there is no effective protection for the floor of the corridor. The dragging of the pedal and building materials in the construction process can cause wear and tear to the floor of the corridor.

[0004] In addition, the traditional protective structure is mostly designed as a whole, which is complicated to install and remove, and difficult to flexibly adjust the extension width according to the construction demand. Moreover, the stability of the support structure is insufficient, and it is easy to shake when the material collides or the personnel accidentally touches, which exists safety risk. Therefore, there is an urgent need for a temporary protective fence that does not need to damage the main structure of the corridor, can flexibly expand the three-dimensional space, is convenient for construction and feeding, and can protect the floor of the corridor. SUMMARY

[0005] The present application aims to solve the problems of fence installation damage, low space utilization, poor protection and protection effect in the prior art, and provides a corridor extension protective fence for building construction.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0007] A corridor extension protective fence for building construction, comprising a plurality of grids and a foot pad embedded at the bottom of the grid, the foot pad is clamped at the edge of the corridor on both sides, and is symmetrically arranged, the foot pads in the same group are connected by a first steel pipe, the grid is inserted into the adjacent two foot pads, a plurality of grids and foot pads are assembled into a protective fence, the foot pad is in T-shaped structure as a whole, and a screw rod is threadedly connected to the lower end of the foot pad, the front end of the screw rod is connected with a block through a bearing, when the foot pad is clamped at the edge of the corridor and connected and pulled by the first steel pipe, the block is supported on the side wall of the corridor to form a support, the grid comprises a pair of columns, a connecting frame is embedded between the columns, and a plurality of connecting shafts are arranged side by side on the connecting frame to form a barrier.

[0008] Preferably, the foot pad comprises a supporting block and a baffle integrally arranged on the lower surface of the supporting block, wherein the front end of the supporting block is upwardly raised, a pipe groove for clamping the first steel pipe is arranged on the raised portion, and the baffle is arranged at the joint of the raised portion and the horizontal portion of the supporting block.

[0009] Preferably, a plurality of waist holes are symmetrically arranged on the horizontal portion of the baffle, and when assembled, the two vertical columns of the grid are respectively inserted into one waist hole of each of the two adjacent foot pads, and the lower end of the vertical column is provided with a baffle piece with a width greater than that of the waist hole, so as to realize the extension of the protective fence relative to the corridor.

[0010] Preferably, a receiving groove is arranged on the raised portion of the supporting block above the pipe groove, the receiving groove is arranged in the middle of the raised portion in the transverse direction, the pipe groove is arranged in the middle of the raised portion in the longitudinal direction, a movable buckle is rotatably connected to the receiving groove by a pin shaft, the other end of the movable buckle is also inserted and locked into the receiving groove by a pin shaft, one end of the pin shaft is provided with a shaft cap, and the other end of the pin shaft is provided with a through hole, and a latch is inserted into the through hole for limiting.

[0011] 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 by the pin shaft, and a plurality of cross-shaped buckles are fixedly sleeved on the first steel pipe, and the cross-shaped buckles are located on the inner side of the movable buckle.

[0012] Preferably, when a plurality of foot pads are transversely arranged on the corridor by the first steel pipe, the second steel pipe is sleeved between the cross-shaped buckles on the same side of the first steel pipe.

[0013] Preferably, the screw is threadedly connected to the baffle, and limit rods are symmetrically arranged on the rear surface of the stop block and extend rearward through the baffle.

[0014] Preferably, a clamping groove is arranged on the opposite side of the pair of vertical columns, and the connecting frame is connected to the pair of vertical columns through the clamping groove, and the clamping groove has a wedge-shaped structure with a large inner diameter and a small outer diameter.

[0015] Preferably, a plurality of mounting holes are uniformly arranged on the connecting frame from the upper surface downward, and the mounting holes do not penetrate the bottom of the connecting frame, and the connecting shaft is inserted into the mounting hole.

[0016] Preferably, a plurality of rollers are sleeved on the connecting shaft, the rollers are made of plastic material and have a hollow structure.

[0017] Compared with the prior art, the present application provides a corridor extension protective fence for building construction, which has the following advantages:

[0018] 1. The corridor extension protective fence for building construction can directly adjust the extension width of the protective fence outward by inserting the columns of the grating into the waist holes at different positions on the foot pad, so as to realize the adjustment of the extension width of the protective fence outward relative to the corridor and meet the needs of different construction scenes. The second expansion layer is formed by adding the fourth steel pipe, the fifth steel pipe and the matching foot pad, so as to further expand the available space outside the corridor, meet the basic protection needs of small decoration, adapt to the large space needs of material stacking and equipment transportation in large-scale construction, and have higher flexibility than the traditional fixed-size fence. Further, the stability of the fence is improved by the interlaced frame of the horizontal steel pipe and the vertical steel pipe: the steel pipe connected with the foot pad forms a basic support with the vertical reinforcing steel pipe; the third steel pipe newly added to enhance the connection of the original foot pad and the fourth steel pipe and the fifth steel pipe constituting the second frame are double-locked with the horizontal steel pipe by the movable buckle and are laterally supported by the stop block, so as to effectively resist construction collision and high-level wind load and avoid the fence from shaking or tilting and reduce the risk of material falling and personnel accidents.

[0019] 2. The corridor extension protective fence for building construction directly clamps the T-shaped clamping structure of the foot pad on the edge of the corridor, and forms lateral support by cooperating with the screw rod to push the stop block, so as to completely avoid the damage to the corridor wall and ground caused by the destructive connecting pieces such as expansion bolts, and save the repair cost and construction period in the later stage, which is especially suitable for the construction scene of existing building reconstruction or high structural protection requirement.

[0020] 3. The corridor extension protective fence for building construction is connected by the wedge-shaped clamping slot with large inner diameter and small outer diameter, so that the connection is more stable and not easy to fall off. Meanwhile, the cross-shaped lock buckle fixed on the first steel pipe cooperates with the second steel pipe to further enhance the overall structural strength of the protective fence. Further, the hollow plastic roller is sleeved on the connecting shaft of the grating, so that the roller can rotate freely when the material is transported inside the fence, which greatly reduces the friction between the material and the connecting shaft, avoids the scratch on the surface of the building materials such as pipes and boards, reduces the transportation resistance, and saves the physical strength and time of the construction personnel.

[0021] 4. The corridor extension protective fence for building construction adopts standardized design for the core components such as the grating and various steel pipes, and the cross-shaped lock buckle / fastener can be used with common construction steel pipes without the need for special accessories. Meanwhile, it can be used for decoration protection of low-rise dormitories and office buildings and meet the outside protection needs of high-rise building main construction, and has higher scene compatibility than the traditional single-function fence. Meanwhile, all components are connected by plug-in and buckle type connection, so that the construction preparation and finishing efficiency is improved.

[0022] 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

[0023] Figure 1 This invention provides an assembly for extending protective fencing for building construction corridors. Figure 1 ;

[0024] Figure 2 This invention provides an assembly for extending protective fencing for building construction corridors. Figure 2 ;

[0025] Figure 3 This is a partial exploded view of a protective fence extending from a building construction corridor, as proposed in this invention.

[0026] Figure 4 This is a schematic diagram of a protective fence structure for an extended corridor in building construction proposed in this invention;

[0027] 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.

[0028] Figure 6 This is a grid structure diagram of a corridor extension protective fence for building construction proposed in this invention;

[0029] 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;

[0030] Figure 8 This invention proposes a protective fence for extending corridors during building construction. Figure 7 Enlarged structural diagram of section A;

[0031] Figure 9 This invention provides an assembly for extending protective fencing for building construction corridors. Figure 3 .

[0032] In the diagram: 101, grating; 1011, column; 1012, slot; 1013, baffle; 1014, connecting frame; 1015, mounting hole; 1016, coupling; 1017, roller;

[0033] 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;

[0034] 103, first steel pipe; 104, second steel pipe; 105, third steel pipe; 106, fourth steel pipe; 107, fifth steel pipe. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application.

[0036] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0037] Embodiment one

[0038] The present embodiment provides a basic structure of a corridor extension protective fence for building construction, which is suitable for construction scenes with small space demand outside the corridor, moderate protective strength requirement, such as construction projects of factories, office buildings, etc.

[0039] Reference Figure 1 and Figure 2 is an assembly structure diagram of the corridor extension protective fence for building construction in the present embodiment. The protective fence is mainly composed of three parts: a grid 101 component, a foot pad 102 component and a steel pipe connecting piece. The three parts cooperate to realize the functions of protection and space extension, and adapt to the protective needs of the corridor in small and medium-sized construction scenes. Among them, the foot pad 102 component serves as the supporting foundation of the entire fence, adopts a T-shaped integrated structure, and specifically includes a supporting block 1021 and a baffle 1025. The lower surface of the supporting block 1021 is fixedly connected with the top end of the baffle 1025 through a welding process, and the connection strength meets the bearing and impact resistance requirements during construction. In addition, the baffle 1025 is accurately arranged at the junction of the raised part and the horizontal part of the supporting block 1021, forming a clamping structure that can be clamped on the edges of the two sides of the corridor, and preliminary positioning can be achieved without the aid of other fixing parts.

[0040] The front end of the block 1021 is upwardly convex, and a pipe groove 1023 is longitudinally arranged in the convex part. The inner wall of the pipe groove 1023 is polished to avoid scratching the surface of the steel pipe. The pipe groove 1023 of the same group of blocks 1021 is provided with a first steel pipe 103. The first steel pipe 103 is arranged across the corridor to connect the same group of foot pads 102, forming a transverse support beam, which ensures that the foot pad 102 can be stably erected on the edge of the corridor. The pipe groove 1023 is not required to be punched on the wall or the ground of the corridor, which avoids damaging the main structure of the corridor. The cross-sectional size of the pipe groove 1023 is matched with the outer diameter of the first steel pipe 103, and the gap is controlled between 1-2mm, which can ensure that the first steel pipe 103 is smoothly inserted and can prevent the steel pipe from shaking in the groove, realizing reliable connection and traction between the same group of symmetrical foot pads 102.

[0041] To further avoid the first steel pipe 103 from sliding or falling in the pipe groove 1023, a receiving groove is arranged on the convex part of the block 1021 above the pipe groove 1023. The receiving groove is arranged in the transverse center of the convex part. A movable buckle 1024 is rotatably connected in the receiving groove through a pin shaft. The length of the movable buckle 1024 is completely matched with the length of the receiving groove, which ensures that the movable buckle 1024 can be completely accommodated in the receiving groove without occupying additional space. When 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 with the receiving groove through another group of pin shafts. One end of the pin shaft is provided with a shaft cap, and the other end is provided with a through hole. A plug pin is inserted into the through hole for double limiting. Through the combined fixing method of “pin shaft + plug pin”, the axial and radial displacement of the first steel pipe 103 is completely limited, which ensures that the first steel pipe 103 will not be loose during construction.

[0042] Meanwhile, a plurality of cross lock buckles are fixedly sleeved on the first steel pipe 103. The number of cross lock buckles is one-to-one corresponding to the number of groups of foot pads 102, and all cross lock buckles are located inside the movable buckle 1024, which accurately avoids the rotating track of the movable buckle 1024 and avoids position interference between the two during installation or use. When a plurality of groups of foot pads 102 are arranged across the corridor by the first steel pipe 103, referring to Figure 3 The second steel pipe 104 is commonly sleeved between the cross lock buckles corresponding to the adjacent foot pads 102 on the same side. The second steel pipe 104 is arranged perpendicularly to the first steel pipe 103, forming a network support frame interlaced in the transverse and longitudinal directions. The frame structure can uniformly disperse the external force received by the fence to each foot pad 102, greatly improving the structural stability of the fence as a whole, and effectively preventing the fence from shaking due to material collision, personnel leaning and other conditions during construction.

[0043] Referring to Figure 4 and Figure 5The horizontal part of the baffle 1025 is symmetrically provided with a plurality of waist holes 1022, which are uniformly distributed along the length direction of the baffle 1025. The spacing of each group of waist holes 1022 is set according to the common extension width requirement (such as 30 cm, 50 cm, 80 cm) in building construction, which provides multi-gear adjustment space for the installation of the grating 101 assembly, and the column 1011 of the grating 101 assembly can be flexibly inserted, see Figure 6 、 Figure 7 and Figure 8 In the embodiment, the grating 101 assembly includes a pair of columns 1011 and a connecting frame 1014. The opposite side of the column 1011 is provided with a wedge-shaped clamping groove 1012 with large inside and small outside. The wedge-shaped structure design uses the “wedge tightening effect” to enhance the connection stability. The two side edges of the connecting frame 1014 are completely matched with the shape of the clamping groove 1012, which can be directly embedded between the two columns 1011. Without the help of connecting parts such as bolts, quick assembly can be realized, greatly shortening the time of building the fence.

[0044] A plurality of mounting holes 1015 are uniformly provided on the connecting frame 1014 from the upper surface downward. The mounting holes 1015 do not penetrate the bottom of the connecting frame 1014, forming a blind hole structure. It can not only ensure the installation stability of the connecting shaft 1016, but also prevent rainwater, dust and other impurities from seeping into the inside of the connecting frame 1014 to cause corrosion. Each mounting hole 1015 is inserted with a connecting shaft 1016, and the connecting shaft 1016 is perpendicular to the connecting frame 1014. A plurality of connecting shafts 1016 jointly form a horizontal barrier structure. The gap width of this structure is strictly controlled within 15 cm, which can effectively block the falling of construction tools and small materials from the gap of the fence, reducing the risk of falling objects from high altitude. In addition, a plurality of hollow rollers 1017 made of plastic are sleeved on the connecting shaft 1016. The roller 1017 is made of high-strength polyethylene material, which has good wear resistance and impact resistance, and the roller 1017 can rotate freely along the connecting shaft 1016. When the materials such as steel pipes, steel bars and boards are transported inside the fence, the roller 1017 can convert the sliding friction between the materials and the connecting shaft 1016 into rolling friction, greatly reducing the friction loss of the materials and the connecting shaft 1016. It not only avoids scratching the surface of the building materials to affect the later use, but also reduces the resistance when transporting materials, saves the physical consumption of construction personnel, and improves the construction efficiency.

[0045] Further, the lower end of the column 1011 is also integrally formed with a baffle 1013. 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 clamped on the lower surface of the baffle 1025, forming 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 connection reliability of the grating 101 assembly and the foot pad 102.

[0046] Notably, the construction personnel can independently select the waist hole 1022 on the pad foot 102 and the stand column 1011 according to the actual extension space required outside the corridor, adjust the installation position of the grid 101 assembly, flexibly change the extension width of the protective fence relative to the corridor, and easily meet the space requirements in different construction scenes such as temporary material stacking outside the corridor, small equipment operation space, and the like, with a much higher adaptability than the traditional fixed-width protective fence.

[0047] Referring to Figure 5 To further enhance the support stability of the pad foot 102 and avoid the pad foot 102 from tilting to the outside of the corridor due to external force, a screw rod 1028 is further threadedly connected to the baffle 1025, the screw rod 1028 is arranged in the horizontal direction, the front end of the screw rod 1028 is connected with an abutting block 1027 through a deep groove ball bearing, the bearing is arranged to make the abutting block 1027 only do translation when the screw rod 1028 rotates, and the abutting block 1027 does not rotate synchronously with the screw rod 1028; the contact surface of the abutting block 1027 is designed as a plane structure and is pasted with a rubber non-slip pad, which can increase the friction with the wall and avoid scratching the surface of the wall; two limiting rods 1029 are symmetrically welded to the rear surface of the abutting block 1027, the limiting rods 1029 are arranged in parallel with the screw rod 1028 and extend backward through the baffle 1025, the limiting rods 1029 and the baffle 1025 are gap-fitted, to ensure that the abutting block 1027 can move smoothly; when the pad foot 102 is clamped at the edge of the corridor, the first steel pipe 103 is first used to pull across to preliminarily fix the horizontal position of the pad foot 102, then the screw rod 1028 is rotated to push the abutting block 1027 to move forward until the abutting block 1027 tightly abuts against the wall of the corridor, to form a reliable lateral support; at the same time, the limiting rods 1029 can effectively limit the movement track of the abutting block 1027, to prevent the abutting block 1027 from deviating or tilting when subjected to force, and to ensure that the whole pad foot 102 does not tilt to the outside of the corridor due to the force on the outside of the fence, thereby structurally ensuring the safety of the fence.

[0048] More advantageously, the embodiment fully considers the needs of the whole corridor construction cycle, realizes the "coordination and adaptation of protective fence and subsequent construction", when the corridor carries out floor laying operation, the pouring formwork can be directly fixed between the adjacent pads 102, the structure strength of the pad 102 is used to extrude and support the formwork, the formwork can also be auxiliary fixed by combining the commonly used supporting materials such as wood and steel pipe in the existing building construction process, without the need of additional special support frame, the early preparation work of floor pouring is simplified, during the floor pouring period, the segmented construction method is used to promote, since the first steel pipe 103 is erected above the corridor and maintains a sufficient distance from the floor pouring surface, it will not hinder the cement pouring operation, the construction personnel can normally carry out the operation such as material distribution and vibration; when the polished treatment is needed for the poured floor, according to the operation range of the polishing equipment, a part of the first steel pipe 103 is removed to avoid the steel pipe shielding the polishing area; on the pad 102 where the first steel pipe 103 is removed, the short pipe is connected through the pipe groove 1023 (the length of the short pipe is cut according to the actual needs, usually 1 / 3-1 / 2 of the length of the original first steel pipe 103), the cross buckle is still arranged on the short pipe according to the original interval, and the second steel pipe 104 is still connected with the cross buckle, one end or both ends of the second steel pipe 104 are fixed on the cross buckle at the end of the first steel pipe 103 which is not removed, to form a temporary support frame, which can not only ensure the stability of the remaining fence structure, but also provide enough operation space for the polishing equipment, so that the floor polishing machine or manual operation can carry out fine polishing on the floor; when the floor is completely dried and solidified, the first steel pipe 103 is reinstalled to the original position, at this time, the scaffold foot net commonly used in building construction can be laid on the first steel pipe 103, the foot net is fixed with the steel pipe through the tie, to form a protective layer covering the top of the corridor, which separates the completed floor from the subsequent construction area, effectively avoiding the damage such as scratching and wear caused by material falling and personnel stepping on the floor during subsequent construction, and reducing the workload of floor repair; finally, when the whole building construction project is completed, the protective fence is removed, the installation of the pad 102 will leave an installation pit at the edge of the corridor floor, which is matched with the shape of the bottom of the pad 102, the installation pit can be directly used as the installation base of the corridor guardrail in the decoration stage - the construction personnel only need to carry out hole processing in the installation pit, embed the guardrail foot into the hole, and then fill and smooth with cement mortar, which can not only save the steps of "hole drilling and leveling" in the traditional installation of guardrail, avoid the secondary damage to the intact floor, but also realize the accurate positioning of the guardrail through the position of the installation pit, ensure the straightness and aesthetics of the guardrail installation, realize the "seamless connection of protective fence use and subsequent decoration".

[0049] Embodiment two

[0050] The embodiment is based on embodiment one, and is suitable for construction scenes with large space demand outside the corridor, such as material storage area protection outside the corridor in large building main body construction, equipment transportation channel protection outside the high-rise corridor, temporary operation platform protection during large-area decoration, etc. A protection fence structure with secondary extension function is provided, and through the combined design of the “base frame + extension frame”, the available space outside the corridor is further expanded, while the stability and safety of the structure after expansion are ensured.

[0051] Referring to Figure 1 , Figure 8 and Figure 9 , based on the base structure of embodiment one, a fourth steel pipe 106 and a fifth steel pipe 107 are added to the installed foot pad 102 assembly at the edge of the corridor to form a secondary extension support frame. The frame is similar to the base frame structure but has complementary functions, and together forms a larger protection system. Specifically, the fourth steel pipe 106 is arranged in parallel with the first steel pipe 103 and is fixed on the baffle 1025 of the foot pad 102 by a U-shaped hoop. The U-shaped hoop is made of Q235 carbon steel material and has sufficient bearing capacity. The open end of the U-shaped hoop is downward, and after passing through the waist hole 1022 on the baffle 1025, the lower end is sleeved with a wooden square (the wooden square is usually 50mm x 100mm). The length of the wooden square is greater than the width of the waist hole 1022, forming a clamping structure of “upper pressing steel pipe and lower wooden square”. Then, the two ends of the U-shaped hoop are tightened by nuts, so that the fourth steel pipe 106 is tightly fixed above the baffle 1025. The setting of the wooden square can effectively disperse the local pressure of the U-shaped hoop on the baffle 1025, avoid deformation or cracking of the baffle 1025 due to stress concentration, and prolong the service life of the foot pad 102.

[0052] A pair of cross-shaped fasteners are welded and fixed on the fourth steel pipe 106, and the two cross-shaped fasteners are located at the two ends of the fourth steel pipe 106, respectively. The fourth steel pipes 106 on adjacent foot pad 102 assemblies are kept parallel to ensure that the fifth steel pipe 107 can be smoothly installed. The fifth steel pipe 107 is sleeved with the cross-shaped fasteners between the fourth steel pipes 106 on the same side. The fifth steel pipe 107 is arranged perpendicularly to the fourth steel pipe 106, forming the same horizontal-vertical interlaced support structure as “first steel pipe 103 + second steel pipe 104” in embodiment one. This structure can provide the same stability for the secondary extension part as the base part, and avoid shaking of the secondary frame due to increased span. At the same time, the fifth steel pipe 107 is also provided with a foot pad 102 assembly identical to the structure of embodiment one. The foot pad 102 and the fifth steel pipe 107 are also fixed by a U-shaped hoop penetrating the waist hole 1022. The specifications of the U-shaped hoop and the setting method of the wooden square are the same as the fixing method of the fourth steel pipe 106, which ensures the stability of the installation of the foot pad 102 on the fifth steel pipe 107 and provides reliable support for the installation of the subsequent grid 101 assembly.

[0053] After the installation of the secondary support frame is completed, the new grid 101 assembly is inserted into the waist hole 1022 of the foot 102 on the fifth steel pipe 107, and the structure of the grid 101 assembly is completely the same as that of the first embodiment, including the column 1011 with a wedge-shaped clamping groove 1012, the embedded connection frame 1014, the inserted connecting shaft 1016, and the plastic hollow roller 1017. The universality of the assembly ensures that the construction personnel do not need to relearn the installation method, reduces the operation difficulty, and through the cooperation of the column 1011 and the waist hole 1022 at different positions, the width of the secondary extension part of the fence can be further adjusted, so that the extension width of the secondary fence and the base fence is complementary (for example, the base fence is extended by 50 cm, and the secondary fence is further extended by 50 cm, and the total extension width can reach 100 cm), and finally the protective fence is extended outward relative to the corridor in two stages, greatly expanding the protection range and available space outside the corridor, meeting the needs of large-scale construction, such as large amount of material stacking and temporary parking of large equipment.

[0054] Referring to Figure 2 and Figure 8 In addition, considering that the secondary extension structure will increase the stress load of the original foot 102 assembly, in order to avoid damage to the original foot 102 due to excessive stress, the pipe hole 1026 is also provided on the baffle 1025 in the embodiment, which is arranged along the height direction of the baffle 1025 and located below the waist hole 1022. The diameter of the pipe hole 1026 is matched with the outer diameter of the third steel pipe 105, so that the third steel pipe 105 can be tightly inserted. The third steel pipe 105 is transversely inserted between the pipe holes 1026 of the symmetric feet 102 in the same group, and the third steel pipe 105 is parallel to the first steel pipe 103 and the fourth steel pipe 106, forming a transverse support beam located at the lower part of the baffle 1025. The cross-shaped fastener is also fixedly sleeved on the third steel pipe 105 for limiting, and the position of the cross-shaped fastener corresponds to the position of the pipe hole 1026, so as to prevent the third steel pipe 105 from sliding in the pipe hole 1026, and ensure that the third steel pipe 105 can stably play a supporting role.

[0055] The addition of the third steel pipe 105 can significantly enhance the transverse connection strength between the feet 102 on the same side, and disperse the stress of the secondary extension structure transmitted to the original foot 102 to the third steel pipe 105, so as to avoid deformation or displacement of the foot 102 due to concentrated stress. At the same time, the third steel pipe 105, the first steel pipe 103 and the fourth steel pipe 106 form a three-layer transverse support structure, which greatly improves the wind resistance and impact resistance of the entire fence structure. Even in high-rise construction or adverse weather conditions (such as strong wind), the stability of the fence can be ensured, and the fence can be effectively prevented from falling due to external force, so as to ensure the safety of the construction personnel and materials.

[0056] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A corridor extension protective fence for construction, comprising a plurality of grids (101) and a plurality of feet (102) embedded at the bottom of the grids (101), the feet (102) are clamped at the edges of both sides of the corridor and symmetrically arranged, the feet (102) in the same group are connected by a first steel pipe (103), the grid (101) is inserted on two adjacent feet (102), and a plurality of grids (101) and the feet (102) thereof are assembled into a protective fence, characterized in that: The foot pad (102) is T-shaped as a whole, and a screw rod (1028) is threadedly connected to the lower end of the foot pad (102), and the front end of the screw rod (1028) is connected with a stop block (1027) through a bearing, when the foot pad (102) is clamped on the edge of the corridor and connected and pulled by the first steel pipe (103), the stop block (1027) is abutted on the side wall of the corridor to form a support, the grid (101) comprises a pair of stand columns (1011), and a connecting frame (1014) is embedded between the stand columns (1011), a plurality of connecting shafts (1016) are arranged side by side on the connecting frame (1014) to form a grid. ​ 2. A construction corridor extension guardrail according to claim 1, characterized in that: The foot pad (102) comprises a supporting block (1021) and a baffle (1025) integrally arranged on the lower surface of the supporting block (1021), wherein the front end of the supporting block (1021) is upwardly raised, and a pipe groove (1023) for clamping the first steel pipe (103) is formed in the supporting block (1021), and the baffle (1025) is arranged at the joint of the raised portion and the horizontal portion of the supporting block (1021).

3. A construction corridor extension guardrail according to claim 2, wherein: A plurality of waist holes (1022) are symmetrically formed in the horizontal portion of the baffle (1025), when assembled, the two stand columns (1011) of the grid (101) are respectively inserted into one waist hole (1022) of each of the two adjacent foot pads (102), and the lower end of the stand column (1011) is provided with a baffle (1013) having a width greater than that of the waist hole (1022), by inserting the stand column (1011) into the waist hole (1022) at different positions of the foot pad (102), the extension width of the protective fence relative to the corridor outward is realized.

4. A construction corridor extension guardrail according to claim 2, characterized in that: An accommodating groove is formed in the raised portion of the supporting block (1021) and above the pipe groove (1023), the accommodating groove is centrally formed in the transverse direction of the raised portion, and the pipe groove (1023) is centrally formed in the longitudinal direction of the raised portion, a movable buckle (1024) is rotatably connected to the accommodating groove by a pin shaft, and the other end of the movable buckle (1024) is also inserted and locked into the accommodating groove by a pin shaft, one end of the pin shaft is provided with a shaft cap, and the other end is provided with a through hole, and a bolt is inserted into the through hole for limiting.

5. A construction corridor extension guardrail according to claim 4, wherein: 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 by the pin shaft, and a plurality of cross-shaped buckles are fixedly sleeved on the first steel pipe (103), and the cross-shaped buckles are located inside the movable buckle (1024).

6. A construction corridor extension guardrail according to claim 5, wherein: When a plurality of foot pads (102) are spanned on the corridor by the first steel pipe (103), the same side cross-shaped buckles fixed on the first steel pipe (103) are jointly sleeved with the second steel pipe (104).

7. A construction corridor extension guardrail according to claim 2, characterized in that: The screw rod (1028) is threadedly connected to the baffle (1025), and limit rods (1029) are symmetrically arranged on the rear surface of the stop block (1027) and extend rearward through the baffle (1025).

8. The construction corridor extension guardrail according to claim 1, wherein: A clamping groove (1012) is formed in the opposite side of the pair of stand columns (1011), and the connecting frame (1014) is connected with the pair of stand columns (1011) through the clamping groove (1012), and the clamping groove (1012) is wedge-shaped with an inner part larger than an outer part.

9. The construction corridor extension guardrail according to claim 1, wherein: A plurality of mounting holes (1015) are uniformly arranged on the connecting frame (1014) from the upper surface downward, and the mounting holes (1015) do not penetrate the bottom of the connecting frame (1014), and the connecting shaft (1016) is inserted into the mounting hole (1015).

10. A construction corridor extension guardrail according to claim 9, characterized in that: A plurality of rollers (1017) are sleeved on the connecting shaft (1016), the rollers (1017) are made of plastic material, and are hollow structures.

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