Combined edge work safety device and method of use

Abstract

The application discloses a combined edge operation safety device and a use method, which comprises a wall outside fixing component, a wall penetrating component, a wall inside fixing component and an embedded inserting rod. The device is flexible in length adjustment through different modulus of the second hollow steel pipe (14) to adapt to different wall thicknesses, and the applicability and flexibility are improved. When installed, three components are assembled into a whole, pass through the wall reserved hole, and the built-in inserting rod is used to apply pressure to the extrusion hammer (10) to push the toothed extrusion rod (3) to produce displacement transmission, so that the gear (2) drives the rotating steel plate (1) to rotate and is clamped on the outer wall for one-side fixing. After the device is fixed, a safety belt or a steel wire rope is hung for safe construction operation. After the construction is completed, the built-in inserting rod is rotated to pull out the device, and quick disassembly and turnover are realized. All components of the application are modularized construction, can be quickly replaced if damaged, improve the overall recovery rate, reduce the risk of operation personnel, and ensure the construction safety.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building engineering, more specifically, relates to a combined edge operation safety device and use method. BACKGROUND

[0002] In the construction industry, workers usually need to wear safety belts and other safety devices when performing edge operations to protect their personal safety. However, during the project construction process, especially in the secondary structure and decoration stage, due to construction progress, site conditions and cost control considerations, it often faces the situation of working without an external frame. In this case, workers often lack reliable safety belt suspension fixing positions when working at high altitudes, and there is a great risk of falling.

[0003] As the patent document with publication number CN202121211512.4, the utility model provides a safety belt suspension device for high-altitude edge operation, which comprises a cylindrical barrel and a baffle, the cylindrical barrel is open at both ends, a hanging ring for suspending a safety belt is arranged at one end of the cylindrical barrel, the baffle is connected with the cylindrical barrel through a shaft, the shaft is fixedly connected with the cylindrical barrel at both ends, the baffle can rotate around the shaft, a pull rod for controlling the opening and closing of the baffle is hinged to the baffle, by controlling the operating end of the pull rod, the baffle is closed with the wall by rotating the baffle, according to the different thickness of the shear wall, the protection bolt is locked with the wall thickness, after the protection bolt is taken out, the baffle is retracted by pulling the pull rod, and the baffle is quickly separated from the wall, and then the safety belt suspension device is taken out from the reserved hole. The utility model has the advantages of simple structure, low manufacturing cost, installation of the safety belt suspension device on one side of the wall, convenient installation and disassembly, convenient carrying, firm connection with the wall, and high safety. However, the pipe body of the device cannot be adjusted according to the actual thickness of the wall on site, and after processing and forming, if the outer rod body is too long, a cantilever end is easily formed, which increases the risk of rod body damage and makes the rod body inconvenient to transport. In addition, the device is integrated inside and outside the wall, and if part of the safety device is damaged, the entire device will be replaced, which greatly increases the cost. SUMMARY

[0004] In view of the above defects or improvement needs of the prior art, the present application provides a combined edge operation safety device and use method, which is connected by hollow steel pipes designed in modules to form safety devices of different lengths to adapt to different thickness walls, improve the flexibility and applicability of the device, and the modular design facilitates quick replacement of damaged parts, reducing construction costs. By inserting the built-in insertion rod into the wall on one side, the baffle on the other side is rotated to fix the device, reducing the risk of edge operation on the other side of the wall, and after construction is completed, the built-in insertion rod is rotated to extract the device, achieving quick disassembly and turnover of the device.

[0005] In order to achieve the above object, according to one aspect of the present application, a combined edge work safety device is provided, comprising a wall outside fixing component, a wall penetrating component, a wall inside fixing component and an internal plug-in rod, wherein,

[0006] The outside fixing component comprises a rotating steel plate with a gear fixed on the surface, a gear-ribbed extrusion rod matched with the gear, an extrusion hammer welded with the gear-ribbed extrusion rod and a first hollow steel pipe with an external convex thread port at one end, the wall penetrating component comprises a second hollow steel pipe with different modules, one end of which is made into an internal lining thread port and the other end into an external convex thread port, the wall inside fixing component comprises a third hollow steel plate with an L-shaped clamping slot cut at the end, and the internal plug-in rod is welded with a clamping nail which can be clamped in the L-shaped clamping slot;

[0007] The hollow steel pipes of the components are connected into an integral safety device through the internal lining thread port and the external convex thread port, and the integral length of the flexible adjusting device is adjusted through the second hollow steel pipe with different modules to adapt to different wall thicknesses, and the modular design facilitates the quick replacement of damaged components;

[0008] The internal plug-in rod is inserted into the hollow steel pipe inside the safety device on the wall inside, pressure is applied at the end, the extrusion hammer is extruded to push the gear-ribbed extrusion rod to generate displacement transmission, thereby driving the rotating steel plate to rotate through the gear to be clamped on the external wall for fixing, and single-side installation and fixing of the safety device are realized.

[0009] Further, the other end of the first hollow steel pipe is welded with a fixing plate which is perpendicular to the center of the first hollow steel pipe, has the same width as the diameter of the first hollow steel pipe and has a thickness of 1 / 4-1 / 3 of the diameter of the first hollow steel pipe.

[0010] Further, the end of the first hollow steel pipe is provided with a hollow steel pipe blocking plate, on which a back-up spring base and an extrusion rod passing hole for the gear-ribbed extrusion rod to pass through are respectively arranged at the diagonal positions.

[0011] Further, the back-up spring base is installed with a back-up spring, and the other end of the back-up spring is connected with the extrusion hammer for bearing the pressure of the internal plug-in rod.

[0012] Further, the two sides of the fixing plate are respectively provided with one rotating steel plate through a fixed anchor nail, and the rotating steel plate is provided with a back force spring when fixed.

[0013] Further, one end of the rotating steel plate is circular and the other end is rectangular, has the same width as the diameter of the first hollow steel pipe and has a thickness of 1 / 4-1 / 3 of the diameter of the first hollow steel pipe.

[0014] Further, the end of the third hollow steel plate is welded with a steel plate clamping ring for internal adhesion to the wall.

[0015] Further, the built-in insertion rod also includes a diameter smaller than the inner diameter of the hollow steel pipe.

[0016] Further, the end of the insertion rod is welded with a hanging ring for suspending a safety belt or a steel wire rope.

[0017] According to another aspect of the present application, the present application provides a method for using a combined edge operation safety device, which is implemented by using the above-mentioned combined edge operation safety device, and the specific implementation steps are as follows:

[0018] S100: preliminary preparation: according to the drawings, safety device components of corresponding size specifications are processed according to the modular standard, and the processed components are transported to the site;

[0019] S200: on-site assembly and installation: according to the thickness of the wall, the second hollow steel of different modules is connected to form a wall-penetrating component of the required length, and the wall-external fixing component, the wall-penetrating component and the wall-internal fixing component are assembled into an integrated device through the bolt thread; the assembled safety device is passed through the wall reserved hole to ensure that the steel plate clamping ring on the wall-internal fixing component is attached to the inside of the wall, and the wall-internal side is fixed;

[0020] S300: wall-external fixation: the built-in insertion rod is inserted into the hollow steel pipe inside the wall-penetrating safety device, pressure is applied to the other end of the built-in insertion rod, and the built-in insertion rod is rotated to clamp the clamping nail on the built-in insertion rod in the L-shaped clamping groove of the wall-internal fixing component, the built-in insertion rod is extruded, the extrusion hammer is displaced through the extrusion rod with gear marks connected, the gear is rotated, the rotating steel plate is rotated from the parallel state to the vertical state with the fixed plate, and the rotating steel plate is clamped to the external wall for fixation;

[0021] S400: safety suspension and construction operation: after the two ends of the safety device are fixed, a safety belt or a steel wire rope can be suspended, and a safe construction operation can be carried out;

[0022] S500: disassembly and turnover: after the construction is completed, the built-in insertion rod is rotated to make the clamping nail disengage from the L-shaped clamping groove, the built-in insertion rod is extracted, under the restoring force of the return spring, the rotating steel plate becomes parallel to the fixed plate, the safety device is quickly extracted, and the safety device is turned over to the next scene for continuous use.

[0023] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects:

[0024] 1. The combined edge operation safety device of the present application, the wall penetrating rod is designed in a step of 50mm, which can be produced in 50mm, 100mm, 200mm, etc., and is processed in a factory, which can be spliced according to the actual situation on site, so that the product of the manufacturer or the leasing factory has the multi-applicability of the construction industry, and the flexibility and applicability of the device are improved;

[0025] 2. The wall outside fixing part, the wall penetrating part and the wall inside fixing part of the combined edge operation safety device of the present application are designed in a segmented modularization, the used parts are replaceable, the damaged parts can be replaced in time on site, the replacement of the parts reduces the elimination rate of the overall safety device, ensures the safety of the operation personnel, and some devices such as the built-in insertion rod can be made of waste on-site materials, which saves a lot of cost;

[0026] 3. The combined edge operation safety device of the present application is placed in the wall reserved hole or the screw hole, the built-in insertion rod is inserted into the hollow steel pipe, the wall outside baffle is rotated and fixed, the device can be operated on the wall inside floor platform, the single-side installation solves the problem that the safety belt cannot be fixed in the position after the outer frame is removed, and the safety device cannot be installed by the internal and external operation, the risk of the edge operation of the operation personnel is reduced, the device is simple to operate, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structure schematic view of the combined edge operation safety device of the embodiment of the present application;

[0028] Figure 2 It is a structure schematic view of the wall outside fixing part of the device of the embodiment of the present application;

[0029] Figure 3 It is a structure cross-sectional view of the wall outside fixing part of the device of the embodiment of the present application;

[0030] Figure 4 It is a structure schematic view of each part of the wall outside fixing part of the device of the embodiment of the present application;

[0031] Figure 5 It is a structure schematic view of the wall penetrating rod of the device of the embodiment of the present application;

[0032] Figure 6 It is a structure schematic view of the wall inside fixing part of the device of the embodiment of the present application;

[0033] Figure 7 It is a structure schematic view of the built-in insertion rod of the device of the embodiment of the present application;

[0034] Figure 8Structure schematic view of the device of the embodiment of the present application installed in a wall reserved hole;

[0035] Figure 9 Flowchart of the use method of the combined edge operation safety device of the embodiment of the present application.

[0036] In all the drawings, the same reference signs represent the same technical features, specifically: 1-rotating steel plate; 2-gear; 3-toothed extrusion rod; 4-hollow steel pipe; 5-outer convex wire port; 6-fixed anchor; 7-return spring; 8-return spring base; 9-hollow steel pipe blocking plate; 10-extrusion hammer; 11-return spring base; 12-extrusion rod passing hole; 13-fixing plate; 14-second hollow steel pipe; 15-inner lining wire port; 16-steel plate snap ring; 17-L-shaped clamping groove; 18-inserting rod; 19-clamping nail; 20-suspension ring; 21-third hollow steel pipe; 22-wall reserved hole or screw hole; 23-concrete wall. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present application clearer and more apparent, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as there is no conflict.

[0038] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indications will also change accordingly.

[0039] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0040] In this patent, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0041] As shown in Figure 1 An embodiment of the present application provides a combined edge operation safety device, which comprises a wall outside fixing component, a wall penetrating component, a wall inside fixing component and an embedded plug rod. The wall outside fixing component comprises a rotating steel plate 1, a gear 2 fixed on the rotating steel plate 1, a gear-ribbed extruded rod 3 and a first hollow steel pipe 4 with an external convex thread port 5 at the end thereof. The wall penetrating component is a second hollow steel pipe 14 with different modules, the tail of which is made into an internal lining thread port 15 and the end of which is made into an external convex thread port 5. The wall inside fixing component comprises a third hollow steel pipe 21 with an L-shaped clamping slot 17 cut at the end thereof.

[0042] The first hollow steel pipe 4 of the wall outside fixing component, the second hollow steel pipe 14 with different modules of the wall penetrating component and the third hollow steel pipe 21 with the L-shaped clamping slot 17 of the wall inside fixing component are assembled into an integral device through the thread, and the overall length of the device is controlled by the second hollow steel pipe 14 with different modules of the wall penetrating component to adapt to different wall thicknesses. The length of the device can be flexibly adjusted to adapt to shear walls with different thicknesses, improve the applicability and flexibility of the device, and the damaged hollow steel plate segment can be replaced to reduce the construction cost. By inserting the embedded plug rod into the inside of the device on the wall inside and applying pressure, the gear-ribbed extruded rod 3 pushes the gear 2 on the rotating steel plate 1 to rotate, thereby driving the rotating steel plate 1 to rotate and be clamped on the external wall to be fixed, realizing single-side installation and fixation of the safety device and avoiding installation of the safety device on the free side to reduce the risk of the operation personnel.

[0043] Further, as shown in Figures 1-4As shown, the wall outside fixing component includes a rotating steel plate 1 fixedly provided with a gear 2, a toothed extrusion rod 3 matched with the gear 2, a first hollow steel pipe 4 with one side end portion made into an outwardly convex wire port 5, a fixed anchor 6, a return spring 7, a return spring base 11, an extrusion rod passing hole 12 and a fixed plate 13; the other end portion of the first hollow steel pipe 4 is welded with the fixed plate 13, the fixed plate 13 is a cuboid steel plate with the same width as the diameter of the hollow steel pipe 4 and the thickness of 1 / 4-1 / 3 of the diameter of the first hollow steel pipe 4, which is vertically welded with the center of the first hollow steel pipe 4, the short side is parallel with the end plane of the first hollow steel pipe 4, and the long side is perpendicular to the end plane of the first hollow steel pipe 4; the hollow steel pipe blocking plate 9 is arranged at the bottom end of the first hollow steel pipe 4, and the return spring base 11 for mounting the return spring 8 and the extrusion rod passing hole 12 for the toothed extrusion rod 3 to pass through are arranged at the diagonal positions of the hollow steel pipe blocking plate 9, the other end of the return spring 8 is fixedly connected with the extrusion hammer 10, and the extrusion hammer 10 is welded with the toothed extrusion rod 3 engaged with the gear 2 fixed on the rotating steel plate 1;

[0044] The rotating steel plate 1 is fixed on the fixed plate 13 through the fixed anchor 6 or bolt, one rotating steel plate 1 is arranged on each side of the fixed plate 13, the return spring 7 is arranged when the rotating steel plate 1 is fixed, and the rotating steel plate 1 is parallel to the fixed plate 13 in the initial state. The return spring 7 has the characteristics that it is deformed under external force and restored to the original state after the external force is removed. In the safety device, when the built-in plug rod is pulled out and the extrusion force of the extrusion hammer 10 on the toothed extrusion rod 3 disappears, the restoring force of the return spring 7 will make the rotating steel plate 1 change from the vertical state to the parallel state with the fixed plate 13. The reset function ensures that the safety device can quickly return to the initial state after disassembly, facilitating the use and turnover next time.

[0045] During installation, the return spring 7 should be controlled to make the rotating steel plate 1 parallel to the fixed plate 13, the rotating steel plate 1 is parallel to the fixed plate 13 in the unforced state, the rotating steel plate 1 is driven to rotate by the displacement transmission of the toothed extrusion rod 3 when the extrusion hammer 10 receives external force, so that the two rotating steel plates 1 become perpendicular to the fixed plate 13, and the rotating steel plate 1 remains parallel to the fixed plate 13 through the restoration of the return spring 7 when the force on the extrusion hammer 10 disappears.

[0046] As Figure 5As shown, the wall-penetrating part is connected by multiple second hollow steel pipes 14, one end of which is made into an internal threaded hole 15, and the other end is made into an external threaded hole 5, facilitating the connection of second hollow steel pipes 14 of different modules. Since the thickness of the building wall is usually a 50mm step, the wall-penetrating part can be made into 50mm, 100mm, 200mm, etc. module lengths in the factory, and after being transported to the site, it can be connected by the threaded holes according to the actual wall thickness on site to form the required length on site.

[0047] As shown in the drawings, Figure 6 As shown, the wall-internal fixing part is welded by a third hollow steel pipe 21 and a steel plate clasp ring 16, the tail of the third hollow steel pipe 21 is made into an internal threaded hole 15, and an L-shaped clamping groove 17 is cut at the end part to clamp the built-in inserting rod, and the steel plate clasp ring 16 is attached to the inside of the wall to fix the inside of the wall.

[0048] As shown in the drawings, Figure 7 As shown, the built-in inserting rod includes an inserting rod 18 with a diameter smaller than the inner diameter of the hollow steel pipe, the end of which is welded with a safety device hanging ring 20, which can hang a safety belt or a steel wire rope between two devices, allowing multiple people to work safely, and a clamping nail 19 is welded on the built-in inserting rod, which can be clamped in the L-shaped clamping groove 17, when the built-in inserting rod is inserted into the wall-penetrating rod core, the clamping nail 19 can be clamped in the L-shaped clamping groove 17 of the wall-internal fixing part, so that the built-in inserting rod is fixed in the wall-penetrating rod.

[0049] As shown in the drawings, Figure 8 As shown, the wall-penetrating part is connected by multiple second hollow steel pipes 14, one end of which is made into an internal threaded hole 15, and the other end is made into an external threaded hole 5, facilitating the connection of second hollow steel pipes 14 of different modules. Since the thickness of the building wall is usually a 50mm step, the wall-penetrating part can be made into 50mm, 100mm, 200mm, etc. module lengths in the factory, and after being transported to the site, it can be connected by the threaded holes according to the actual wall thickness on site to form the required length on site. Figure 5 As shown, the wall-penetrating part is connected by multiple second hollow steel pipes 14, one end of which is made into an internal threaded hole 15, and the other end is made into an external threaded hole 5, facilitating the connection of second hollow steel pipes 14 of different modules. Since the thickness of the building wall is usually a 50mm step, the wall-penetrating part can be made into 50mm, 100mm, 200mm, etc. module lengths in the factory, and after being transported to the site, it can be connected by the threaded holes according to the actual wall thickness on site to form the required length on site. Figure 6). After the construction is completed, the built-in plug rod is rotated to detach the clamping nail 19 from the L-shaped clamping groove 17, the built-in plug rod is extracted, and under the restoring force of the return spring 7, the rotating steel plate 1 becomes parallel to the fixed plate 13, so that the safety device can be quickly extracted and used in the next scene. In the construction process, all components are modularized and constructed, so if any component is damaged, it can be quickly replaced on site, improving the overall recovery rate.

[0050] In combination Figures 1-7 As shown in the drawings, the embodiment of the application provides a use method of a combined edge operation safety device, which specifically comprises the following steps: Figure 9

[0051] S100: preliminary preparation: according to the building design drawings, the safety device components of the required size specifications are accurately processed according to the modularization standard. These components include but are not limited to wall outside fixing components, wall penetrating components, wall inside fixing components, and built-in plug rods. After processing, all components are subjected to quality inspection to ensure that they meet safety standards. Then, the processed components are properly packaged and transported to the construction site to prepare for the subsequent installation work;

[0052] S200: on-site assembly and installation: according to the thickness of the wall, the second hollow steel of different modules is connected into a wall penetrating component of the required length, and the wall outside fixing component, the wall penetrating component, and the wall inside fixing component are assembled into an integral device through the bolt thread; the assembled safety device is inserted through the wall reserved hole to ensure that the steel plate clasp on the wall inside fixing component is attached to the inside of the wall, and the wall inside is fixed;

[0053] S300: single-side installation and fixation: the built-in plug rod is inserted into the hollow steel pipe inside the wall penetrating safety device, pressure is applied to the other end of the built-in plug rod, and the clamping nail on the built-in plug rod is clamped in the L-shaped clamping groove of the wall inside fixing component by rotating the built-in plug rod. The built-in plug rod extrudes the extrusion hammer, the extrusion hammer generates displacement through the extrusion rod with gear stripes connected, thereby driving the gear to rotate. With the rotation of the gear, the rotating steel plates on both sides of the fixed plate gradually change from the parallel state to the vertical state to the fixed plate, and finally are clamped to the outer wall for fixation. This single-side installation and fixation method not only simplifies the installation process, but also improves the installation efficiency;

[0054] S400: safety suspension and construction operation: after ensuring that both ends of the safety device are stable, a safety belt or a steel wire rope can be hung, providing safety protection for construction workers to carry out high-altitude construction operations such as outer wall maintenance and cleaning;

[0055] ​S500: disassembly and turnover: after the construction is completed, the built-in plug rod is rotated to make the clamping nails separate from the L-shaped clamping groove, the built-in plug rod is pulled out, under the restoring force of the return spring, the rotating steel plate becomes parallel to the fixed plate, at this time, the safety device can be quickly pulled out and properly stored or turned over to the next construction scene for continuous use.

[0056] Those skilled in the art will easily understand that the above description is only the preferred embodiment of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A combination edge work safety device, characterized in that, The wall fixing device comprises a wall outer side fixing component, a wall passing component, a wall inner side fixing component and an inner built-in inserting rod, wherein, The outer side fixing component comprises a rotating steel plate (1) with a gear (2) fixed on the surface, a gear-ribbed extruding rod (3) matched with the gear (2), an extruding hammer (10) welded with the gear-ribbed extruding rod (3), and a first hollow steel pipe (4) with an outer convex thread port (5) at one end; the wall passing component comprises a second hollow steel pipe (14) with an inner lining thread port (15) at one end and an outer convex thread port (5) at the other end; the wall inner side fixing component comprises a third hollow steel pipe (21) with an L-shaped clamping groove (17) cut at the end; and the inner built-in inserting rod is welded with a clamping nail (19) capable of being clamped in the L-shaped clamping groove (17); The hollow steel pipes of the components are connected into an integral safety device through the inner lining thread port (15) and the outer convex thread port (5), and the integral length of the flexible adjusting device is adjusted through the second hollow steel pipe (14) with different modules to adapt to different wall thicknesses, and the modular design facilitates the quick replacement of damaged components; The inner built-in inserting rod is inserted into the hollow steel pipe inside the safety device on the inner side of the wall, pressure is applied at the end, the extruding hammer (10) is extruded to push the gear-ribbed extruding rod (3) to generate displacement transmission, so as to drive the rotating steel plate (1) to rotate through the gear (2) and be clamped on the outer wall to fix the single-side installation of the safety device; The other end of the first hollow steel pipe (4) is welded with a fixing plate (13) which is perpendicular to the center of the first hollow steel pipe (4), has the same width as the diameter of the first hollow steel pipe (4), and has a thickness of 1 / 4-1 / 3 of the diameter of the first hollow steel pipe (4); The end of the first hollow steel pipe (4) is provided with a hollow steel pipe blocking plate (9) which is provided with a return spring base (11) and an extruding rod passing hole (12) for the gear-ribbed extruding rod (3) to pass through at the diagonal positions; The return spring base (11) is installed with a return spring (8), and the other end of the return spring (8) is connected with the extruding hammer (10) for bearing the pressure of the inner built-in inserting rod; The fixing plate (13) is provided with one rotating steel plate (1) on each side through a fixing anchor nail (6), The rotating steel plate (1) is provided with a return spring (7) when fixed; The rotating steel plate (1) has a circular end and a rectangular end, has the same width as the diameter of the first hollow steel pipe (4), and has a thickness of 1 / 4-1 / 3 of the diameter of the first hollow steel pipe (4).

2. The combination edge work safety device of claim 1, wherein, The end of the third hollow steel pipe (21) is welded with a steel plate clamping ring (16) for being attached to the wall.

3. The combination edge work safety device of claim 2, wherein, The inner built-in inserting rod further comprises an inserting rod (18) with a smaller diameter than the inner diameter of the hollow steel pipe.

4. The combination edge work safety device of claim 3, wherein, The end of the inserting rod (18) is welded with a suspension ring (20) for suspending a safety belt or a steel wire rope.

5. A method for using a combined edge work safety device, wherein the combined edge work safety device is as claimed in claim 4, characterized in that, Specifically comprising the following steps: S100: preliminary preparation: according to the drawings, the safety device components of corresponding size specifications are processed according to the modular standard, and the processed sufficient components are transported to the site; S200: On-site assembly and installation: According to the thickness of the wall, the second hollow steel with different modules is connected into the required length of the wall penetrating part, and the wall outside fixing part, the wall penetrating part and the wall inside fixing part are assembled into an integrated device through the bolt thread; The assembled safety device is inserted through the reserved hole of the wall to ensure that the steel plate snap ring on the wall inside fixing part is attached to the inside of the wall, and the wall inside is fixed; S300: Wall outside fixation: Insert the built-in insertion rod into the hollow steel pipe inside the wall penetrating safety device, apply pressure to the other end of the built-in insertion rod, and rotate the built-in insertion rod to clamp the clamping nail on the built-in insertion rod in the L-shaped clamping groove of the wall inside fixing part, the built-in insertion rod extrudes the extrusion hammer, the extrusion hammer generates displacement through the connected extrusion rod with gear stripes, drives the gear to rotate, and makes the rotating steel plate rotate from the parallel state with the fixed plate to the vertical state, and is clamped to the outer wall for fixation; S400: Safety suspension and construction operation: After ensuring that both ends of the safety device are fixed, the safety belt or steel wire rope can be suspended, and the safety construction operation can be carried out; S500: Disassembly and turnover: After the construction is completed, the rotating built-in insertion rod is rotated to make the clamping nail separate from the L-shaped clamping groove, the built-in insertion rod is extracted, under the restoring force of the return spring, the rotating steel plate becomes parallel to the fixed plate, the safety device is quickly extracted, and the safety device is turned over to the next scene for continuous use.

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