Erecting-free edge protection structure

Abstract

The utility model provides an erecting-free edge protection structure, and belongs to the technical field of building construction. According to the technical scheme, the supporting structure comprises a plurality of sets of supporting frame bodies, the supporting frame bodies are arranged on a constructed structural floor slab, bearing keels are arranged on the supporting frame bodies and comprise two rows of main keels which are arranged on the supporting frame bodies in parallel, and a plurality of sets of auxiliary keels are transversely arranged on the main keels; the parts, extending out of the structural floor slab, of the multiple secondary keels form a supporting structure of the edge protection structure, scaffold boards are arranged on the upper side face of the supporting structure, and a protection structure is arranged on the outer side edge of the supporting structure. The outer protective frame has the advantages that the outer protective frame can be completely suitable for constructional engineering with few layers, tight construction period and more irregular structural facade changes, the cost for erecting a special outer protective frame is saved, the construction period needed for dismantling an outer frame is shortened, and the outer protective frame can be popularized and applied to high-rise buildings.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a temporary edge protection structure without erection. Background Art

[0002] At present, during the construction of the main structures of all buildings, external protection is required. The commonly used protection methods in the industry are floor-standing external scaffolding and cantilever external scaffolding. Among them, the cantilever external scaffolding has various forms, such as cantilever on I-shaped steel plates and cantilever of triangular steel trusses. The protection structures are basically in the form of steel pipe scaffolding + dense mesh.

[0003] However, for projects with few floors and tight construction periods, using floor-standing scaffolding will greatly affect the subsequent interspersed construction of curtain walls and masonry works of the project, thereby affecting the project construction period; while using cantilever scaffolding can transfer the working surface of the first floor to the next process in advance, but the demolition of the external scaffolding above the second floor will be more troublesome and require a longer demolition time. Therefore, the current mainstream protection methods are not applicable to multi-story structures with few floors.

[0004] For example, the building main structure of a certain project is 2 floors, in the form of flat slab without beams, with a single-layer area of 10825m 2 , and a perimeter of 502m. Due to the tight contract construction period, masonry and curtain wall construction need to be inserted before the completion of the main structure, otherwise the construction period will be postponed. However, for the current external scaffolding system, if floor-standing scaffolding is selected, due to the large building area and long perimeter, not only more materials are required, the utilization efficiency is low, but also the demolition requires a lot of construction period; if cantilever scaffolding is selected, it requires higher costs and a longer construction period. Although it can ensure the early insertion of the first floor, the subsequent demolition takes longer and the utilization efficiency is lower, which is not worth the candle.

[0005] This patent aims to invent a brand-new temporary edge protection structure that avoids specially erecting an external protection scaffold, which can be fully applicable to building projects with few floors and tight construction periods, saving the cost of specially erecting an external protection scaffold, shortening the construction period required for demolition, and can also be popularized and applied to high-rise buildings. Content of the Utility Model

[0006] The purpose of the utility model is to provide a temporary edge protection structure without erection that solves the limitation of the erection height of traditional working scaffolds and improves the safety protection system.

[0007] The utility model is achieved by the following measures:

[0008] A kind of edge protection structure without scaffolding, characterized in that it includes several groups of support frames, and several groups of the support frames are arranged on the already constructed structural floor slab. The edge protection structure shares one of the support frames with the to-be-constructed structural floor slab. A load-bearing keel is arranged on the support frame. The load-bearing keel includes two columns of main keels arranged on the support frame and in parallel. Several groups of secondary keels are arranged horizontally on the main keels. The parts of several secondary keels extending out of the structural floor slab form the support structure of the edge protection structure. A foot plank is arranged on the upper side of the support structure, and a protection structure is arranged on the outer edge of the support structure. The support structure, the foot plank and the protection structure form the construction platform of the edge protection structure.

[0009] The specific features of the present utility model are as follows:

[0010] The support frame includes several groups of unit frames inserted into an integral body up and down. The unit frame includes a pair of assembled frames. A scissors brace is arranged between the two assembled frames on both sides for connection and fixation. The scissors brace is two mutually staggered reinforcing ribs. The assembled frame includes two vertical rods, a cross bar is arranged between the two vertical rods, and a diagonal brace rod for increasing the connection strength is arranged between the vertical rod and the cross bar;

[0011] A bottom support is arranged at the bottom of the support frame, and a top support is arranged at the top of the support frame.

[0012] Through holes are arranged on the free end faces of the vertical rods corresponding to the upper and lower sides of the support frame;

[0013] The bottom support includes a sleeve one rotatably arranged at the lower end of the corresponding vertical rod and provided with internal threads. The sleeve one is matched with the through hole and is coaxial. A lead screw one is threadedly connected inside the sleeve one. A bottom plate is arranged at the lower end of the lead screw one. Several groups of auxiliary plates one are arranged on the periphery of the sleeve one. Through operation holes one are arranged on the auxiliary plates one. The bottom plate is fixed on the already constructed structural floor slab through the arranged installation holes and corresponding bolts. Components such as a round rod or a steel bar can be inserted into the operation hole one to rotate the sleeve one, so that an axial relative movement is generated between the lead screw one and the vertical rod, thereby realizing the telescoping of the lead screw one in the through hole, so as to realize the adjustment of the height and flatness of the whole system;

[0014] The top support includes a second sleeve rotatably arranged at the upper end of the corresponding vertical rod and provided with internal threads. The second sleeve is matched with and coaxial with the through hole at the upper end. A second screw rod is connected to the second sleeve by internal threads. The upper end of the second screw rod is provided with a top plate. Several groups of limiting members are arranged on the upper side surface of the top plate. The limiting members are of angle steel structure. During installation, the main keel is installed between two of the limiting members, and the limiting members play a role in limiting the main keel. In addition, corresponding installation holes are provided on the top plate and are fixedly connected to the main keel by bolts. Several groups of auxiliary plates two are arranged on the periphery of the second sleeve, and through operation holes two are arranged on the auxiliary plates two. Components such as round rods or steel bars can be inserted into the operation holes two to rotate the second sleeve. Due to the limiting effect of the main keel, the second screw rod cannot rotate with the second sleeve, so the second screw rod will have an axial displacement, that is, the second screw rod will stretch and contract along the through hole, thereby realizing the adjustment of the height and flatness of the entire system.

[0015] The protection structure includes several groups of protection vertical rods and several groups of standardized guardrails arranged on the several groups of protection vertical rods;

[0016] The protection vertical rod includes a fixing plate. On both sides of the upper side surface of the fixing plate, a first column and a second column are respectively fixedly arranged. A sliding groove is arranged on the lower side surface of the fixing plate, and the sliding groove penetrates into the second column. A threaded hole penetrating the upper end surface of the second column is arranged on the bottom surface of the upper side in the sliding groove, and a matching threaded rod is arranged in the threaded hole;

[0017] A matching sliding rod is slidably arranged in the sliding groove. The upper end of the sliding rod is rotatably connected to the lower end of the threaded rod. The lower end of the sliding rod is provided with a fastening member used in cooperation with the fixing plate, and the fastening member and the fixing plate form a first clamping groove. After the threaded rod passes through the upper side end of the second column, a rocker is arranged. By rotating the rocker, the sliding of the sliding rod can be realized, so as to realize the movement of the fastening member towards the fixing plate. Thus, when the secondary keel is stuck in the first clamping groove, the protection vertical rod can be clamped on the secondary keel by rotating the rocker. In addition, the first column and the second column are strengthened and connected by an auxiliary rod arranged therebetween;

[0018] A pair of L-shaped plates are arranged on the outer side surface of the first column away from the second column, and the pair of L-shaped plates and the first column form a second clamping groove for installing the standardized guardrail;

[0019] The standardized guardrail includes a steel mesh sheet and a toe board arranged on the lower side of the steel mesh sheet.

[0020] The construction method of the edge protection structure is as follows:

[0021] S1. Installation of the support frame: The support frame is assembled on the ground in advance and then lifted to the working position by a tower crane. Subsequently, the height of the bottom bracket is adjusted to meet the requirements of height and verticality. Then, a scaffolding board is placed on the support structure as a construction platform for the installation of the keel and formwork.

[0022] S2. Installation of the load-bearing keel: The load-bearing keel is installed on the support frame. The load-bearing keel is made of I-shaped wooden beams. The main keel and the secondary keel have the same specifications. After the support frame is erected, the construction workers place the main keel of the load-bearing keel in the top bracket of the support frame on the construction platform. After it is fixed, the secondary keel is installed. The secondary keel is placed on the main keel, and one end extends 1.1 m outside the edge of the structural floor for overhanging. Subsequently, it is fixed. The spacing of the secondary keel can be freely adjusted according to the actual situation to meet the construction and safety requirements. Here, the spacing is taken as 500 mm. In addition, if reinforcement measures are required, the other end of the secondary keel can be fixed to the lower floor by diagonal pulling with a steel wire rope. After the installation of the load-bearing keel is completed, the floor formwork is erected on its upper part.

[0023] S3. Installation of the scaffolding board: The scaffolding board is installed on the support structure. Specifically, after the floor formwork is erected, the installation of the outer protection scaffolding board begins. The operators hang the safety belts on the erected floor formwork, place the scaffolding board on the overhanging load-bearing keel, that is, on the support structure, and then fix the scaffolding board with nails.

[0024] S4. Installation of the protective vertical pole: The protective vertical pole is clamped to the outer side of the load-bearing keel through the first slot. Specifically, the protective vertical pole is a rocker-fastening type clamp. The width of the first slot can be adjusted by rocking the rocker. The first slot is inserted into the outer side of the load-bearing keel, and then the width of the first slot is reduced by rocking the rocker to tightly clamp the load-bearing keel. The installation spacing of the protective vertical pole is 1.8 m.

[0025] S5. Installation of the standardized guardrail: The standardized guardrail is installed on the protective vertical pole through the second slot. Specifically, the size of the standardized guardrail is 2000 mm * 1200 mm. After the installation of the protective vertical pole is completed, the operators place the standardized guardrail between two adjacent protective vertical poles and simultaneously insert it into the upper and lower second slots of the protective vertical pole. Then, use fasteners to fasten the second slot so that the standardized guardrail cannot move up and down randomly. Subsequently, all the standardized guardrails are installed step by step.

[0026] S6. Removal of edge protection: After the concrete pouring is completed and reaches a certain strength, generally 2-4 days, the side formwork of the floor slab is removed, and the edge protection railings are installed on the edge of the floor slab. Then the standardized guardrails and protective poles are removed; when the concrete strength reaches the conditions for demolding, the scaffolding, load-bearing keels, and support frames are removed together with the support frames; the materials after removal can be used for the edge protection of the next layer to achieve turnover utilization.

[0027] The beneficial effects of the utility model are as follows: this patent has developed a new edge protection structure that avoids the need to specially set up an external protection frame. It can be fully applicable to construction projects with few floors, tight construction period, and irregular changes in structural facades. It saves the cost of setting up a special external protection frame, shortens the construction period required to dismantle the external frame, and can also be promoted for application in high-rise buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0029] Figure 2 It is a schematic diagram of the relevant structure of the load-bearing keel in the embodiment of the utility model.

[0030] Figure 3 It is a schematic structural diagram of the support frame in an embodiment of the utility model.

[0031] Figure 4 for Figure 3 A is an enlarged view of the middle image.

[0032] Figure 5 for Figure 3 Enlarged view of B.

[0033] Figure 6 It is a schematic diagram of the structure of the protective pole and the standardized guardrail in the embodiment of the utility model.

[0034] Figure 7 This is a schematic diagram of the relevant structure of Example 2 of the utility model.

[0035] Among them, the accompanying drawings are marked as: 1. structural floor; 2. supporting frame; 3. main keel; 4. secondary keel; 5. floor formwork; 6. scaffolding board; 7. protective upright; 8. standardized guardrail; 9. vertical bar; 10. horizontal bar; 11. scissors brace; 12. sleeve two; 13. screw rod two; 14. top plate; 15 limiter; 16. sleeve one; 17. screw rod one; 18. bottom plate; 19. column one; 20. L-shaped plate; 21. rocker; 22. column two; 23. fixed plate; 24. sliding rod; 25. fastener; 26. footboard; 27. steel mesh. DETAILED DESCRIPTION

[0036] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0039] To clearly illustrate the technical features of the present solution, the present solution will be described below through specific embodiments.

[0040] See Figures 1-6 , a temporary edge protection structure without scaffolding, including several groups of support frames 2. Several groups of support frames 2 are arranged on the already constructed structural floor 1. The temporary edge protection structure and the to-be-constructed structural floor 1 share one support frame 2. A load-bearing keel is arranged on the support frame 2. The load-bearing keel includes two columns of main keels 3 arranged on the support frame 2 and parallel to each other. Several groups of secondary keels 4 are transversely arranged on the main keels 3. The parts of several secondary keels 4 extending out of the structural floor 1 form the support structure of the temporary edge protection structure. A foot plank 6 is arranged on the upper side of the support structure. A protection structure is arranged on the outer edge of the support structure. The support structure, the foot plank 6 and the protection structure form the construction platform of the temporary edge protection structure.

[0041] The support frame 2 includes several groups of unit frames that are inserted into each other vertically to form an integral body. Each unit frame includes a pair of assembled frames, and a cross brace 11 is arranged between the two assembled frames on both sides for connection and fixation. The cross brace 11 consists of two intersecting reinforcing ribs. The assembled frame includes two vertical rods 9, a cross bar 10 is arranged between the two vertical rods 9, and a diagonal brace rod is arranged between the vertical rod 9 and the cross bar 10 to increase the connection strength.

[0042] A bottom support is arranged at the bottom of the support frame 2, and a top support is arranged at the top of the support frame 2.

[0043] Through holes are arranged on the free end faces of the corresponding vertical rods 9 on both the upper and lower sides of the support frame 2.

[0044] The bottom support includes a sleeve one 16 that is rotatably arranged at the lower end of the corresponding vertical rod 9 and is provided with internal threads. The sleeve one 16 cooperates with the through hole and is coaxial. A lead screw one 17 is threadedly connected inside the sleeve one 16. A bottom plate 18 is arranged at the lower end of the lead screw one 17. Several groups of auxiliary plates one are arranged on the periphery of the sleeve one 16, and through operation holes one are arranged on the auxiliary plates one. The bottom plate 18 is fixed to the completed structural floor 1 through the arranged mounting holes and corresponding bolts. Components such as a round rod or steel bar can be inserted into the operation hole one to rotate the sleeve one 16, so that an axial relative movement is generated between the lead screw one 17 and the vertical rod 9, thereby realizing the telescoping of the lead screw one 17 in the through hole, and thus realizing the adjustment of the height and flatness of the entire system.

[0045] The top support includes a sleeve two 12 that is rotatably arranged at the upper end of the corresponding vertical rod 9 and is provided with internal threads. The sleeve two 12 cooperates with the upper through hole and is coaxial. A lead screw two 13 is threadedly connected inside the sleeve two 12. A top plate 14 is arranged at the upper end of the lead screw two 13. Several groups of limiting members 15 are arranged on the upper side surface of the top plate 14. The limiting members 15 are of angle steel structure. When installed, the main keel 3 is installed between the two limiting members 15, and the limiting members 15 play a role in limiting the main keel 3. In addition, corresponding mounting holes are arranged on the top plate 14 and are fixedly connected to the main keel 3 through bolts. Several groups of auxiliary plates two are arranged on the periphery of the sleeve two 12, and through operation holes two are arranged on the auxiliary plates two. Components such as a round rod or steel bar can be inserted into the operation hole two to rotate the sleeve two 12. Due to the limiting effect of the main keel 3, the lead screw two 13 cannot rotate together with the sleeve two 12. Therefore, the lead screw two 13 will have an axial displacement, that is, the lead screw two 13 will telescope along the through hole, thereby realizing the adjustment of the height and flatness of the entire system.

[0046] The protection structure includes several groups of protection vertical rods 7 and several groups of standardized guardrails 8 arranged on the several groups of protection vertical rods 7.

[0047] The protective vertical pole 7 includes a fixing plate 23. On both sides of the upper side of the fixing plate 23, a first column 19 and a second column 22 are respectively and fixedly arranged. A chute is arranged on the lower side of the fixing plate 23, and the chute penetrates into the second column 22. A threaded hole penetrating the upper end surface of the second column 22 is arranged on the bottom surface of the upper side in the chute, and a matching threaded rod is arranged in the threaded hole;

[0048] A matching sliding rod 24 is slidably arranged in the chute. The upper end of the sliding rod 24 is rotatably connected to the lower end of the threaded rod. A fastener 25 used in cooperation with the fixing plate 23 is arranged at the lower end of the sliding rod 24. The fastener 25 and the fixing plate 23 form a first clamping groove. A rocker 21 is arranged at the upper side end after the threaded rod passes through the second column 22. By rotating the rocker 21, the sliding of the sliding rod 24 can be realized, so as to realize the movement of the fastener 25 towards the fixing plate 23. Thus, when the secondary keel 4 is stuck in the first clamping groove, the protective vertical pole 7 can be clamped on the secondary keel 4 by rotating the rocker 21. In addition, the connection between the first column 19 and the second column 22 is strengthened by an auxiliary rod arranged therebetween;

[0049] A pair of L-shaped plates 20 are arranged on the outer side surface of the first column 19 far away from the second column 22. The pair of L-shaped plates 20 and the first column 19 form a second clamping groove for installing the standardized guardrail 8;

[0050] The standardized guardrail 8 includes a steel mesh sheet 27 and a footrest plate 26 arranged on the lower side of the steel mesh sheet 27.

[0051] The construction method of the edge protection structure is as follows:

[0052] S1. Installation of the support frame 2: The support frame 2 is assembled on the ground in advance, and then lifted to the working position by a tower crane. Subsequently, the height of the bottom bracket is adjusted to make its height and verticality meet the requirements. Then, a foot board 6 is placed on the support structure as a construction platform for the installation of the keel and formwork;

[0053] S2. Installation of the load-bearing keel: The load-bearing keel is installed on the support frame 2. The load-bearing keel adopts an I-shaped wooden beam. The main keel 3 and the secondary keel 4 have the same specifications. After the support frame 2 is erected, the construction personnel place the main keel 3 of the load-bearing keel in the top bracket of the support frame 2 on the construction platform. After fixing, the secondary keel 4 is installed. The secondary keel 4 is placed on the main keel 3, and one end extends 1.1 m outside the edge of the structural floor 1 for cantilever. Subsequently, it is fixed. The spacing of the secondary keel 4 can be freely adjusted according to the actual situation to meet the construction and safety requirements. Here, the spacing is taken as 500 mm. In addition, if reinforcement measures are required, the other end of the secondary keel 4 can be fixed to the lower floor by diagonal pulling with a steel wire rope. After the installation of the load-bearing keel is completed, the floor formwork 5 is erected on its upper part;

[0054] S3, installation of scaffolding board 6: installing scaffolding board 6 on the supporting structure, specifically, after the floor formwork 5 is erected, the installation of the external protective scaffolding board 6 begins, the operator hangs the safety belt on the erected floor formwork 5, places the scaffolding board 6 on the cantilevered load-bearing keel, that is, on the supporting structure, and then fixes the scaffolding board 6 with nails;

[0055] S4. Installation of protective poles: The protective poles 7 are clamped to the outer side of the load-bearing keel through the slot 1. Specifically, the protective pole 7 is a fastening clamp of the rocker 21. The slot 1 can be adjusted in width by shaking the rocker 21. The slot 1 is clamped into the outer side of the load-bearing keel, and then the width of the slot 1 is reduced by shaking the rocker 21 to tightly clamp the load-bearing keel. The installation spacing of the protective poles 7 is 1.8m.

[0056] S5. Installation of standardized guardrail 8: Install the standardized guardrail 8 on the protective pole 7 through the second card slot. Specifically, the size of the standardized guardrail 8 is 2000mm*1200mm. After the installation of the protective pole 7 is completed, the operator places the standardized guardrail 8 between two adjacent protective poles 7, and simultaneously inserts it into the second card slot on the upper and lower sides of the protective pole 7, and then uses the fastener to fasten the second card slot, so that the standardized guardrail 8 cannot move up and down at will, and then gradually install all the standardized guardrails 8.

[0057] S6. Removal of edge protection. After the concrete pouring is completed and reaches a certain strength, generally 2-4 days, the side formwork of the floor slab is removed, and the edge protection railing is installed at the edge of the floor slab. Then the standardized guardrail 8 and the protective upright 7 are removed; when the concrete strength reaches the demolding conditions, the scaffolding board 6, the load-bearing keel, the support frame 2 and the support frame 2 are removed together; the materials after removal can be used for the edge protection of the next layer to achieve turnover utilization.

[0058] Example 2

[0059] See also Figures 3 to 7 For the structural floor with side beams, due to the drop in the bottom elevation of the floor side beams (assuming a drop of 250mm), the top support height of the outermost row of support frames is reduced by 250mm, and a layer of keels is added, with 50mm square wood padding between the two layers of keels. The lower layer of keels (wooden beams) extends 1100mm to support the edge protection of the floor construction.

[0060] Example 3

[0061] For the main body with column cap structure on the edge of the board, assuming that the column cap structure sinks 150mm, the top support height of the support frame can be lowered by 150mm at this position, and the secondary keel can be installed as a general floor slab, followed by the installation of scaffolding boards, protective poles, and standardized guardrails. Since the scaffolding boards here are lowered by 150mm, it is necessary to add a footboard at the external protection position, and the gap between the left and right scaffolding boards is blocked with the secondary keel.

[0062] The technical features not described in the present utility model can be achieved by or adopted from the prior art, and will not be elaborated herein. Of course, the above description is not a limitation to the present utility model, and the present utility model is not limited to the above examples. Any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A temporary edge protection structure that does not require erection, characterized in that It includes several groups of support frames (2), and several groups of the support frames (2) are arranged on the already constructed structural floor slab (1). A load-bearing keel is arranged on the support frames (2). The load-bearing keel includes two columns of main keels (3) arranged in parallel on the support frames (2). Several groups of secondary keels (4) are transversely arranged on the main keels (3). The parts of several secondary keels (4) that extend out of the structural floor slab (1) form the support structure of the edge protection structure. A foot plank (6) is arranged on the upper side of the support structure, and a protection structure is arranged on the outer edge of the support structure.

2. The edge protection structure without erection according to claim 1, characterized in that, The protection structure includes several groups of protection vertical poles (7) and several groups of standardized guardrails (8) arranged on several groups of the protection vertical poles (7); The protection vertical pole (7) includes a fixing plate (23). On both sides of the upper side of the fixing plate (23), a first column (19) and a second column (22) are respectively and fixedly arranged. A chute is arranged on the lower side of the fixing plate (23), and the chute penetrates into the second column (22). A threaded hole that penetrates the upper end face of the second column (22) is arranged on the bottom surface of the upper side in the chute, and a threaded rod that matches is arranged in the threaded hole; A sliding rod (24) that matches is slidably arranged in the chute. The upper end of the sliding rod (24) is rotationally connected to the lower end of the threaded rod. A fastener (25) that is used in cooperation with the fixing plate (23) is arranged at the lower end of the sliding rod (24). The fastener (25) and the fixing plate (23) form a first clamping groove. A rocker (21) is arranged on the upper side end after the threaded rod penetrates out of the second column (22).

3. The edge protection structure without erection according to claim 2, characterized in that, A pair of L-shaped plates (20) are arranged on the outer side surface of the first column (19) away from the second column (22). The pair of L-shaped plates (20) and the first column (19) form a second clamping groove for installing the standardized guardrail (8).

4. The edge protection structure without erection according to claim 1, characterized in that, The support frame (2) includes several groups of unit frames that are inserted and connected into a whole up and down. The unit frame includes a pair of assembled frames. A cross brace (11) is arranged between the two assembled frames on both sides for connection and fixation. The assembled frame includes two vertical rods (9). A cross bar (10) is arranged between the two vertical rods (9). An inclined strut for increasing the connection strength is arranged between the vertical rod (9) and the cross bar (10); A bottom support is arranged at the bottom of the support frame (2), and a top support is arranged at the top of the support frame (2).

5. The edge protection structure without erection according to claim 4, characterized in that Through holes are arranged on the free end surfaces of the vertical rods (9) corresponding to the upper and lower sides of the support frame (2); The bottom support includes a sleeve one (16) that is rotatably arranged at the lower end of the corresponding vertical rod (9) and is provided with internal threads. The sleeve one (16) cooperates with the through hole and is coaxial. A lead screw one (17) is threadedly connected in the sleeve one (16). A bottom plate (18) is arranged at the lower end of the lead screw one (17). Several groups of auxiliary plates one are arranged on the periphery of the sleeve one (16), and operation holes one that penetrate are arranged on the auxiliary plates one; The top support includes a second sleeve (12) rotatably arranged at the upper end of the corresponding vertical rod (9) and provided with internal threads. The second sleeve (12) is matched with and coaxial with the through hole at the upper end. A second lead screw (13) is connected to the second sleeve (12) by internal threads. The upper end of the second lead screw (13) is provided with a top plate (14). A plurality of groups of limiting members (15) are arranged on the upper side of the top plate (14). A plurality of groups of auxiliary plates two are arranged on the periphery of the second sleeve (12), and through operation holes two are arranged on the auxiliary plates two.

Images