Convenient-to-use safety fence for building construction

Abstract

The utility model relates to a building construction safety protection device, in particular to a convenient-to-use safety fence for building construction, which is characterized in that a fence base I and a vertical pipe I are rotatably connected, so that a long fence component can be overturned, and a fence base II and a vertical pipe III are rotatably connected, so that a short fence component can be overturned; the long fence assemblies and the short fence assemblies are turned over towards the inner side of the platform plate, the space outside the platform plate is not occupied, after the long fence assemblies and the short fence assemblies are turned over laterally, the operation platform can be conveniently transferred and reset at other positions, materials can be conveniently conveyed to the operation platform, and the operation platform is stable in connection, high in practicability and easy to popularize. The fence is simple in structure, high in structural strength, convenient to use, capable of being transformed on the basis of an existing crime source fence, low in transformation cost and worthy of popularization.

Description

Technical Field

[0001] This utility model relates to a safety protection device for building construction, specifically a convenient safety fence for building construction. Background Technology

[0002] During construction, it is often necessary to build work platforms that are higher than the ground. Workers stand on these platforms to carry out construction work on the top of buildings or walls. To protect the workers on the work platforms, safety fences are usually installed around the perimeter of the platforms. Although safety fences can effectively protect workers, existing safety fences are generally welded to the work platforms and cannot be disassembled or adjusted in height. When the work platforms are moved, due to height limitations, it is sometimes necessary to remove the safety fences first and then fabricate new safety fences after the work platforms are placed in other construction locations. Furthermore, the installation of safety fences makes it inconvenient to transport materials to the work platforms. To ensure smooth material transport, it is sometimes necessary to install openable gates on the moving platforms. Utility Model Content

[0003] The purpose of this utility model is to provide a convenient safety fence for construction, which is simple and easy to use, has a stable structure, can be flipped down, has an adjustable height, facilitates the movement and relocation of the work platform, and facilitates the transportation of materials to the work platform.

[0004] To achieve the aforementioned technical effects, this utility model provides a user-friendly safety fence for construction, installed on the top surface of a work platform. The work platform includes a support frame and a platform plate. The support frame includes legs and a support frame, which is rectangular. Four supports are provided, all fixedly connected to the bottom surface of the support frame and respectively connected to the four corners of the rectangular support frame. The platform plate is rectangular, with the same shape as the support frame, and is fixedly connected to the top surface of the support frame. This utility model also provides a user-friendly safety fence for construction, including a fence base I and two long fence components. Two long fence components are provided, parallel to each other, and respectively located on the two longer sides of the platform plate. Two short fence components are also provided, parallel to each other, and located on the shorter sides of the platform plate. At both sides; each long fence component includes a bottom frame I and a top frame I, with the top frame I located above the bottom frame I. The bottom frame I includes three vertical pipes I and three horizontal pipes I, which are parallel to each other. There are two horizontal pipes I, which are fixedly connected between each pair of the three vertical pipes I. The top frame I includes horizontal pipes II and three vertical pipes II, which are all fixedly connected to the bottom outer wall of the vertical pipes II. The three vertical pipes II are slidably inserted into the three vertical pipes I. The three fence bases I form a group, and there are two groups of fence bases I in total. The two groups of fence bases I are symmetrical and are located on the top surface of the platform plate. The two groups of fence bases I are located at the two longer sides of the platform plate. The lower ends of the three vertical pipes I of each long fence component are rotatably connected to the three fence bases I of one group of fence bases I.

[0005] Furthermore, it includes short fence components with fence base II. Each short fence component includes a bottom frame II and a top frame II. The top frame II is located above the bottom frame II. The bottom frame II includes a vertical pipe III and a horizontal pipe III. There are two vertical pipes III, which form an "H" shape with one horizontal pipe III. The top frame II includes a horizontal pipe IV and a vertical pipe IV. There are two vertical pipes IV, which form an "n" shape with one horizontal pipe IV. The two vertical pipes IV are slidably inserted into the two vertical pipes III. Two fence base IIs are a group, and there are two groups of fence base IIs in total. The two groups of fence base IIs are opposite each other and are located on the top surface of the platform plate. The two groups of fence base IIs are located on the two shorter sides of the platform plate. The lower ends of the two vertical pipes III of each short fence component are rotatably connected to the two fence base IIs of a group of fence base IIs.

[0006] Furthermore, each fence base I is composed of three identical side plates forming a "[" shape. The open side of the fence base I faces the inside of the platform plate. Each of the two parallel side walls of the fence base I is provided with a through hole II. The lower end of the riser I is located between the two parallel side walls of the fence base I. Each lower end of the riser I is provided with a through hole IV, which penetrates the riser I. The through hole IV and the through hole II are coaxial. A rotating shaft is inserted into the through hole IV and the through hole II. Both ends of the rotating shaft are provided with external threads. The two external threads extend out of the two parallel side walls of the fence base I, and a nut is connected to each external thread after it extends out of the side wall of the fence base I.

[0007] Furthermore, each fence base II is composed of three identical side plates forming a "[" shape. The open side of the fence base II faces the inside of the platform plate. Each of the two parallel side walls of the fence base II is provided with a through hole III. The lower end of the riser III is located between the two parallel side walls of the fence base II. Each lower end of the riser III is provided with a through hole V, which penetrates the riser III. The through hole V and the through hole III are coaxial. A rotating shaft is inserted into the through hole V and the through hole III. Both ends of the rotating shaft are provided with external threads. The two external threads extend out of the two parallel side walls of the fence base II, and a nut is connected to each external thread after it extends out of the side wall of the fence base II.

[0008] Furthermore, the outer diameters of riser I and riser III are the same, the height of fence base II is greater than the height of fence base I, the vertical distance between the axis of through hole III and the top surface of the platform plate is greater than the vertical distance between the axis of through hole II and the top surface of the platform plate, and the vertical height difference between the axis of through hole III and the axis of through hole II is greater than the outer diameter of riser I.

[0009] Furthermore, each riser I has a threaded hole I on its upper outer wall, and a set screw is connected inside the threaded hole I, with the front end of the set screw abutting against the outer wall of the riser II.

[0010] Furthermore, each riser III has a threaded hole II on its upper outer wall, and a set screw is connected inside the threaded hole II, with the front end of the set screw abutting against the outer wall of the riser IV.

[0011] Furthermore, it includes four fixing components. The platform plate has four through holes I, located near the four rectangular corners of the platform plate. The four fixing components are respectively inserted into the four through holes I. Each of the four legs is fixedly connected to a support plate, and the four fixing components are placed on the four support plates. Each fixing component includes a column, a steel wire rope, and a screw. The bottom of the column rests on the support plate, and the upper part of the column has a through hole VI that penetrates the column. One end of the steel wire rope is fixedly connected to the outer wall of the column, and the other end of the steel wire rope is fixedly connected to one end of the screw. The other end of the screw passes through the through hole VI, and the screw extends out of the through hole VI. After extending out of the through hole VI, the screw is connected to a nut. The steel wire rope is used to bind one vertical pipe I and one vertical pipe III, and the steel wire rope is positioned above the horizontal pipe I and the horizontal pipe III.

[0012] Furthermore, the through hole I is a rectangular hole, the cross-section of the column is rectangular, and the inner diameter of the through hole I is slightly larger than the cross-sectional size of the column.

[0013] Furthermore, the support legs and the support frame are connected at an angle by ribs, with each support leg connected to two ribs, which are distributed on the two outer side walls of the support leg.

[0014] The beneficial effects of this utility model are as follows: This utility model achieves the flipping and falling of the long fence assembly through the rotatable connection between the fence base I and the riser I. With one opening side of the fence base I facing the inside of the platform plate, the long fence assembly flips and falls towards the inside of the platform plate. After flipping and falling, the long fence assembly does not occupy the space outside the platform plate, thus preventing the long fence assembly from being unable to flip and fall when the space outside the platform plate is too narrow. Similarly, the rotatable connection between the fence base II and the riser III achieves the flipping and falling of the fence base II. With one opening side of the fence base II facing the inside of the platform plate, the short fence assembly flips and falls towards the inside of the platform plate. After being tilted down, it does not occupy the external space of the platform panel, preventing the short fence component from being unable to tilt down when the external space of the platform panel is too narrow. The tilting down of both the long and short fence components eliminates the increase in platform height caused by the installation of safety fences, thus facilitating the transfer and relocation of the platform. There is no need to reprocess and reinstall safety fences after moving the platform. When materials need to be transported to the platform, one or more long or short fence components can be tilted down flexibly according to the direction of material arrival, facilitating material transport without the need for openable gates on the safety fence. This utility model features stable connections, high structural strength, and ease of use. It can be modified based on existing fence designs at a low cost, making it worthy of widespread adoption. Attached Figure Description

[0015] Figure 1 This is a side view of the structure of this utility model;

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 This utility model Figure 2 AA section view;

[0018] Figure 4 This utility model Figure 2 BB section view;

[0019] Figure 5 This utility model Figure 3 CC section view;

[0020] Figure 6 This utility model Figure 4 DD sectional view;

[0021] Figure 7 This is a top view of the platform plate of this utility model.

[0022] Figure 8 This is a structural schematic diagram of the long fence component of this utility model;

[0023] Figure 9 This utility model Figure 8 EE sectional view;

[0024] Figure 10 This utility model Figure 8 FF sectional view;

[0025] Figure 11 This is a structural schematic diagram of the short fence component of this utility model;

[0026] Figure 12 This utility model Figure 11 GG cross-sectional view;

[0027] Figure 13 This utility model Figure 11 HH sectional view;

[0028] Figure 14 This is a schematic diagram of the structure of the fixing component of this utility model;

[0029] Figure 15 This utility model Figure 14 Sectional view II;

[0030] Figure 16 This is a partial structural cross-sectional view of the support plate of this utility model;

[0031] Figure 17 This is a schematic diagram of the structure of the long fence component and the short fence component of this utility model when both are flipped over and fall down.

[0032] In the diagram: 1. Bracket; 101. Leg; 102. Support frame; 103. Support plate; 104. Rib; 2. Platform plate; 201. Through hole I; 3. Fence base I; 301. Through hole II; 4. Fence base II; 401. Through hole III; 5. Long fence assembly; 6. Bottom frame I; 601. Vertical pipe I; 602. Horizontal pipe I; 603. Through hole IV; 604. Threaded hole I; 7. Top Frame I; 701. Horizontal pipe II; 702. Vertical pipe II; 8. Short fence assembly; 9. Bottom frame II; 901. Vertical pipe III; 902. Horizontal pipe III; 903. Through hole V; 904. Threaded hole II; 10. Top frame II; 1001. Horizontal pipe IV; 1002. Vertical pipe IV; 11. Post; 1101. Through hole VI; 12. Steel wire rope; 13. Screw; 14. Shaft; 1401. External thread. Detailed Implementation

[0033] like Figures 1-17As shown, this utility model discloses a convenient safety fence for construction work, installed on the top surface of a work platform. The work platform includes a support 1 and a platform plate 2. The support 1 includes legs 101 and a support frame 102. The support frame 102 is a rectangular frame, and there are four supports 1. All four supports 1 are fixedly connected to the bottom surface of the support frame 102, and the four supports 1 are respectively connected to the four corners of the rectangular support frame 102. Ribs 104 are obliquely connected between the legs 101 and the support frame 102. Each leg 101 is connected to two ribs 104. The reinforcing bars 104 are disposed on the two outer side walls of the support leg 101. The platform plate 2 is a rectangular plate, and its shape is the same as that of the support frame 102. The platform plate 2 is fixedly connected to the top surface of the support frame 102. This utility model provides a convenient safety fence for construction, including a fence base Ⅰ3 and two long fence components 5. Two long fence components 5 are provided, parallel to each other, and respectively located on the two longer sides of the platform plate 2. Two short fence components 8 are provided, parallel to each other. Two short fence components 8 are located on the two shorter sides of the platform panel 2; each long fence component 5 includes a bottom frame I6 and a top frame I7, with the top frame I7 located above the bottom frame I6. The bottom frame I6 includes three vertical pipes I601 and three horizontal pipes I602, arranged in parallel, and two horizontal pipes I602, each fixedly connected between two of the three vertical pipes I601. The top frame I7 includes three horizontal pipes II701 and three vertical pipes II702, arranged in parallel. All risers II 702 are fixedly connected to the bottom outer wall of riser II 702. The three risers II 702 are slidably inserted into the three risers I 601 respectively. The three fence bases I 3 form a group. There are two groups of fence bases I 3. The two groups of fence bases I 3 are symmetrical. Both groups of fence bases I 3 are set on the top surface of platform plate 2. The two groups of fence bases I 3 are respectively set on the two longer sides of platform plate 2. The lower ends of the three risers I 601 of each long fence component 5 are rotatably connected to the three fence bases I 3 of one group of fence bases I 3 respectively.The system includes a fence base II4 and short fence components 8. Each short fence component 8 includes a bottom frame II9 and a top frame II10. The top frame II10 is located above the bottom frame II9. The bottom frame II9 includes two vertical pipes III901 and one horizontal pipe III902, forming an "H" shape. The top frame II10 includes two horizontal pipes IV1001 and two vertical pipes IV1002, forming an "n" shape. The two vertical pipes IV1002 are slidably inserted into the two vertical pipes III901. Base II4 is a set, and there are two sets of fence base II4, facing each other. The two sets of fence base II4 are located on the top surface of platform plate 2, and are respectively located on the two shorter sides of platform plate 2. The lower ends of the two risers III901 of each short fence component 8 are rotatably connected to the two fence base II4 in one set of fence base II4. Each fence base I3 is composed of three identical side plates forming a "[" shape. The open side of fence base I3 faces the inside of platform plate 2. Through holes II301 are provided on the two parallel side walls of fence base I3. The lower ends of risers I601 are located in... Between the two parallel side walls of the fence base I3, each riser I601 has a through hole IV603 at its lower end. The through hole IV603 passes through the riser I601 and is coaxial with the through hole II301. A rotating shaft 14 is inserted into the through hole IV603 and the through hole II301. Both ends of the rotating shaft 14 are provided with external threads 1401. The two external threads 1401 extend out of the two parallel side walls of the fence base I3, and a nut is connected to each external thread 1401 after it extends out of the side wall of the fence base I3. Each fence base II4 is composed of three identical side plates forming a "[" shape. The open side of the fence base II4 faces the platform plate. 2. On the inner side, each of the two parallel sidewalls of the fence base II4 has a through hole III401. The lower end of the riser III901 is located between the two parallel sidewalls of the fence base II4. Each lower end of the riser III901 has a through hole V903, which penetrates the riser III901. The through hole V903 is coaxial with the through hole III401. A rotating shaft 14 is inserted into the through hole V903 and the through hole III401. Both ends of the rotating shaft 14 have external threads 1401, which extend out of the two parallel sidewalls of the fence base II4. Each external thread 1401 is connected to a nut after extending out of the sidewall of the fence base II4.

[0034] This invention achieves the flipping and falling of the long fence assembly 5 through the rotatable connection between the fence base I3 and the riser I601. The opening side of the fence base I3 faces the inside of the platform plate 2, causing the long fence assembly 5 to flip and fall towards the inside of the platform plate 2. After flipping and falling, the long fence assembly 5 does not occupy the external space of the platform plate 2, preventing the inability to flip and fall the long fence assembly 5 when the external space of the platform plate 2 is too narrow. This invention also achieves the flipping and falling of the fence base II4 through the rotatable connection between the fence base II4 and the riser III901. The opening side of the fence base II4 faces the inside of the platform plate 2, causing the short fence assembly 8 to flip and fall towards the inside of the platform plate 2. After component 8 is flipped down, it does not occupy the external space of platform plate 2, thus preventing the short fence component 8 from being unable to be flipped down when the external space of platform plate 2 is too narrow. After the long fence component 5 and the short fence component 8 are flipped down, the height of the work platform caused by the installation of safety fences is eliminated, thereby facilitating the transfer of the work platform and the setting of the work platform in other locations. There is no need to reprocess and reinstall safety fences after moving the work platform. When it is necessary to transport materials to the work platform, one or more long fence components 5 or short fence components 8 can be flipped down flexibly according to the direction of material inflow, thereby facilitating the transport of materials to the work platform without having to consider setting up an openable fence gate on the safety fence.

[0035] The three risers II 702 are slidably inserted into the three risers I 601 to adjust the overall height of the long fence component 5. The two risers IV 1002 are slidably inserted into the two risers III 901 to adjust the overall height of the short fence component 8. By adjusting the height of the long fence component 5 and the short fence component 8, this utility model can be better adapted to different working conditions.

[0036] Each riser I601 has a threaded hole I604 on its upper outer wall, and a set screw is connected inside the threaded hole I604. The front end of the set screw abuts against the outer wall of riser II702. Each riser III901 has a threaded hole II904 on its upper outer wall, and a set screw is connected inside the threaded hole II904. The front end of the set screw abuts against the outer wall of riser IV1002.

[0037] After the height of the long fence assembly 5 is adjusted to the correct position, the riser I 601 and riser II 702 are locked with set screws. After the height of the short fence assembly 8 is adjusted to the correct position, the riser III 901 and riser IV 1002 are locked with set screws, thereby achieving the adjusted positioning.

[0038] This utility model sets the safety fence to consist of two long fence components 5 and two short fence components 8. In actual use, the lengths of the long fence components 5 and short fence components 8 can be flexibly selected according to different construction conditions and different working platform sizes. After the lengths of the long fence components 5 and short fence components 8 are changed, the number of riser I 601, horizontal pipe I 602, horizontal pipe II 701, riser II 702, riser III 901, horizontal pipe III 902, horizontal pipe IV 1001 and riser IV 1002 are reasonably set according to the specific strength of the long fence components 5 and short fence components 8, while meeting the premise of structural lightness.

[0039] Riser I 601 and Riser III 901 have the same outer diameter. The height of fence base II 4 is greater than the height of fence base I 3. The vertical distance between the axis of through hole III 401 and the top surface of platform plate 2 is greater than the vertical distance between the axis of through hole II 301 and the top surface of platform plate 2. The vertical height difference between the axis of through hole III 401 and the axis of through hole II 301 is greater than the outer diameter of riser I 601. The structure here is designed so that the long fence component 5 and the short fence component 8 can be flipped down to form a stacked effect. Specifically, after flipping down, the short fence component 8 is stacked on top of the long fence component 5.

[0040] It is also important to note that, to ensure that the two long fence components 5 and the two short fence components 8 can sit smoothly without interference after being flipped over, and to prevent two [issues], firstly, before flipping the long fence components 5 and the short fence components 8, the set screws should be loosened to adjust the height of the long fence components 5 and the short fence components 8 to their minimum height, and then the set screws should be tightened again before the flipping operation. Secondly, the minimum height of the long fence components 5 should be less than half the distance between the two longer sides of the platform plate 2, i.e., the width of the platform plate 2, and the minimum height of the short fence components 8 should be less than half the distance between the two shorter sides of the platform plate 2, i.e., the length of the platform plate 2.

[0041] To ensure the structural stability of the long fence component 5 and the short fence component 8 during normal use and to prevent them from overturning, it is also necessary to consider limiting their upright position. This invention utilizes fixing components to achieve this upright positioning. Four fixing components are provided. The platform plate 2 has four through holes I201, located near the four rectangular corners of the platform plate 2. The four fixing components are respectively inserted into the four through holes I201. Each of the four legs 101 is fixedly connected to a support plate 103, and the four fixing components are placed on the four support plates 103. Each... Each fixing component includes a column 11, a wire rope 12, and a screw 13. The bottom surface of the column 11 is placed on the support plate 103. The upper part of the column 11 is provided with a through hole VI 1101, which passes through the column 11. One end of the wire rope 12 is fixedly connected to the outer wall of the column 11, and the other end of the wire rope 12, which is not connected to the column 11, is fixedly connected to one end of the screw 13. The other end of the screw 13, which is not connected to the wire rope 12, passes through the through hole VI 1101. The screw 13 extends out of the through hole VI 1101 and is connected to a nut after extending out of the through hole VI 1101. The wire rope 12 is used to bind one riser I 601 and one riser III 901. The wire rope 12 is located above the horizontal pipes I 602 and III 902.

[0042] In use, the upright 11 is first inserted into the through hole I 201. Then, the steel wire rope 12 is passed around the upright I 601 and the upright III 901, and the screw 13 is inserted into the through hole VI 1101. By adjusting the nut, the screw 13 is continuously extended and tightened, so that the steel wire rope 12 tightly binds the upright I 601 and the upright III 901. This utility model uses the steel wire rope 12 to bind the upright I 601 and the upright III 901, thereby limiting the long fence component 5 and the short fence component 8. The steel wire rope 12 is set above the horizontal pipe I 602 and the horizontal pipe III 902 to ensure that the steel wire rope 12 will not slip.

[0043] The through hole I201 is a rectangular hole, and the cross-section of the column 11 is rectangular. The inner diameter of the through hole I201 is slightly larger than the cross-sectional size of the column 11. The through hole I201 and the column 11 are used to prevent the column 11 from shifting and rotating.

Claims

1. A convenient safety fence for construction, wherein the safety fence is installed on the top surface of a work platform, the work platform includes a support (1) and a platform plate (2), the support (1) includes legs (101) and a support frame (102), the support frame (102) is a rectangular frame, there are four supports (1), all four supports (1) are fixedly connected to the bottom surface of the support frame (102), and the four supports (1) are respectively connected to the four corners of the rectangular support frame (102), the platform plate (2) is a rectangular plate, the shape of the platform plate (2) is the same as the shape of the support frame (102), and the platform plate (2) is fixedly connected to the top surface of the support frame (102); characterized in that: The application relates to a fence, which comprises fence base I (3) and long fence assembly (5) and; the long fence assembly (5) is provided with two long fence assemblies (5), the two long fence assemblies (5) are parallel, and the two long fence assemblies (5) are arranged at two longer sides of the platform plate (2); the short fence assembly (8) is provided with two short fence assemblies (8), the two short fence assemblies (8) are parallel, and the two short fence assemblies (8) are arranged at two shorter sides of the platform plate (2); each long fence assembly (5) comprises bottom frame I (6) and top frame I (7), the top frame I (7) is arranged above the bottom frame I (6), the bottom frame I (6) comprises vertical pipe I (601) and horizontal pipe I (602), the vertical pipe I (601) is provided with three vertical pipes I (601), the three vertical pipes I (601) are parallel, the horizontal pipe I (602) is provided with two horizontal pipes I (602), the two horizontal pipes I (602) are fixedly connected between every two of the three vertical pipes I (601), the top frame I (7) comprises horizontal pipe II (701) and vertical pipe II (702), the vertical pipe II (702) is provided with three vertical pipes II (702), the three vertical pipes II (702) are all fixedly connected to the bottom outer wall of the vertical pipe II (702), and the three vertical pipes II (702) are slidingly inserted into the three vertical pipes I (601); the three fence base I (3) form a group, the fence base I (3) is provided with two groups of fence base I (3), the two groups of fence base I (3) are symmetrical, the two groups of fence base I (3) are arranged on the top surface of the platform plate (2), and the two groups of fence base I (3) are arranged at the two longer sides of the platform plate (2); the lower ends of the three vertical pipes I (601) of each long fence assembly (5) are rotatably connected into the three fence base I (3) of one group of fence base I (3).

2. A safety fence for construction use, which is convenient to use according to claim 1, characterized in that: The fence base II (4) and the short fence assembly (8) are arranged on the top surface of the platform plate (2), and the two groups of fence base II (4) are arranged at the two shorter sides of the platform plate (2); the lower ends of the two vertical pipes III (901) of each short fence assembly (8) are rotatably connected into the two fence base II (4) of one group of fence base II (4).

3. A safety barrier for use in construction according to claim 2, wherein: Each of the fence base I (3) is composed of three identical side plates "[ " shape, the opening side of the fence base I (3) faces the inner side of the platform plate (2), the two parallel side walls of the fence base I (3) are provided with through hole II (301), the lower end of the stand pipe I (601) is arranged between the two parallel side walls of the fence base I (3), the lower end of each stand pipe I (601) is provided with a through hole IV (603), the through hole IV (603) penetrates the stand pipe I (601), the through hole IV (603) is coaxial with the through hole II (301), the through hole IV (603) and the through hole II (301) are inserted with a rotating shaft (14), the rotating shaft (14) is provided with an external thread (1401) at both ends, the two external threads (1401) respectively extend out of the two parallel side walls of the fence base I (3), and each external thread (1401) is connected with a nut after extending out of the side wall of the fence base I (3).

4. A safety barrier for use in construction according to claim 3, wherein: Each of the fence base II (4) is composed of three identical side plates "[ " shape, the opening side of the fence base II (4) faces the inner side of the platform plate (2), the two parallel side walls of the fence base II (4) are provided with through hole III (401), the lower end of the stand pipe III (901) is arranged between the two parallel side walls of the fence base II (4), the lower end of each stand pipe III (901) is provided with a through hole V (903), the through hole V (903) penetrates the stand pipe III (901), the through hole V (903) is coaxial with the through hole III (401), the through hole V (903) and the through hole III (401) are inserted with a rotating shaft (14), the rotating shaft (14) is provided with an external thread (1401) at both ends, the two external threads (1401) respectively extend out of the two parallel side walls of the fence base II (4), and each external thread (1401) is connected with a nut after extending out of the side wall of the fence base II (4).

5. A ready-to-use construction safety fence according to claim 4, characterised in that: The outer diameter of the stand pipe I (601) and the stand pipe III (901) is the same, the height of the fence base II (4) is greater than the height of the fence base I (3), the vertical distance between the axis of the through hole III (401) and the top surface of the platform plate (2) is greater than the vertical distance between the axis of the through hole II (301) and the top surface of the platform plate (2), and the vertical height difference between the axis of the through hole III (401) and the axis of the through hole II (301) is greater than the outer diameter of the stand pipe I (601).

6. A ready-to-use construction safety fence according to claim 5, characterised in that: Each of the stand pipe I (601) is provided with a threaded hole I (604) on the outer wall of the upper portion, and a set screw is connected in the threaded hole I (604), and the front end of the set screw abuts against the outer wall of the stand pipe II (702).

7. A ready-to-use construction safety fence according to claim 6, characterised in that: Each of the stand pipe III (901) is provided with a threaded hole II (904) on the outer wall of the upper portion, and a set screw is connected in the threaded hole II (904), and the front end of the set screw abuts against the outer wall of the stand pipe IV (1002).

8. A ready-to-use construction safety fence according to claim 7, characterised in that: The utility model provides a fixed assembly, the fixed assembly is equipped with four, the platform board (2) is equipped with four through -hole I (201), four through -hole I (201) are close to the rectangular four corners of platform board (2) setting, four fixed assemblies are respectively inserted in four through -hole I (201), four support plates (103) are fixedly connected on four supporting legs (101), and four fixed assemblies are placed on four support plates (103) respectively, every fixed assembly includes stand (11), steel wire rope (12) and screw rod (13), the bottom surface of stand (11) is placed on support plate (103), and the upper portion of stand (11) is equipped with through -hole VI (1101), through -hole VI (1101) penetrates stand (11), one end of steel wire rope (12) is fixedly connected on the outer wall of stand (11), one end of steel wire rope (12) not connected stand (11) is fixedly connected in screw rod (13) one end, the end of screw rod (13) not connected steel wire rope (12) passes through through -hole VI (1101), and screw rod (13) extends through -hole VI (1101), and screw rod (13) is connected with nut after extending through -hole VI (1101), steel wire rope (12) is tied with one standpipe I (601) and one standpipe III (901), and steel wire rope (12) is arranged above horizontal pipe I (602) and horizontal pipe III (902).

9. A ready-to-use construction safety fence according to claim 8, characterised in that: The through -hole I (201) is rectangular hole, the cross section of stand (11) is rectangular, and the inner diameter size of through -hole I (201) is slightly larger than the cross section size of stand (11).

10. A ready-to-use construction safety fence according to any one of claims 1 to 9, characterized in that: The supporting leg (101) and the support frame (102) are obliquely connected with the rib (104), and each supporting leg (101) is connected with two ribs (104).

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