A breakage-free vertical protection fixing device for construction process

Abstract

This invention provides a non-destructive vertical protective fixing device for construction processes, belonging to the field of vertical protective fixing technology. This non-destructive vertical protective fixing device includes a telescopic frame, telescopic components, clamping components, elastic bands, a protective net, and a safety warning component. The telescopic frame has a square structure, with the telescopic components installed in both vertical and horizontal positions. The telescopic components are used to adjust the length and width of the telescopic frame and then securely lock it in place. The dimensions of the telescopic frame are the same as the dimensions of the elevator shaft opening. The clamping component is installed on the side adjacent to the elevator shaft opening, and is used to secure the telescopic frame tightly to the side wall of the elevator shaft opening by fastening it. Installation components for the elastic bands are located at the four corners of the telescopic frame. This invention solves the problem of cumbersome and inconvenient installation of some elevator shaft opening protective devices.

Description

Technical Field

[0001] This invention belongs to the field of vertical protection and fixing technology, specifically, it relates to a non-destructive vertical protection and fixing device for use in the construction process. Background Technology

[0002] With the rapid development of society and the economy, the construction of high-rise and super high-rise buildings is increasing. As an indispensable vertical transportation tool in high-rise buildings, the safe operation of elevators is directly related to people's lives and property safety. During construction, the safety protection of elevator shaft openings is particularly important because elevator shaft openings are a significant safety hazard point in building construction. Without effective protective devices, accidents such as people falling or objects falling can easily occur.

[0003] Existing elevator shaft protection typically involves installing guardrails around the shaft opening. These guardrails are made of steel pipes, which are heavy, vary in spacing and length, are unsightly, and are not securely connected to the surrounding walls. They are also prone to displacement and deformation after vibration. Disassembly and assembly are very inconvenient, making them unsuitable for rapid construction, relocation, and equipment debugging. When encountering elevator shaft openings with varying dimensions, frequent disassembly and reinstallation may be necessary.

[0004] In summary, the existing protective devices at elevator shaft openings are cumbersome and inconvenient to install. Summary of the Invention

[0005] In view of this, the present invention provides a non-destructive vertical protective fixing device for construction, which can solve the problem that the installation of some elevator shaft protective devices is cumbersome and inconvenient.

[0006] This invention is implemented as follows:

[0007] This invention provides a non-destructive vertical protective fixing device for construction processes, comprising a telescopic frame, telescopic components, clamping components, elastic bands, a protective net, and a safety warning component. The telescopic frame has a square structure, with the telescopic components installed both vertically and horizontally. The telescopic components are used to adjust the length and width of the telescopic frame and then securely lock it in place. The telescopic frame is the same size as the elevator opening, and the clamping component is located on the side adjacent to the elevator opening. The clamping component is used to fasten the telescopic frame tightly to the side wall of the elevator opening. Elastic band mounting components are located at the four corners of the telescopic frame, and the elastic bands are fixed to these mounting components to close the elevator opening. The protective net has mounting grooves around the perimeter of the telescopic frame, and the protective net engages with these grooves to form a mesh structure inside the telescopic frame, ensuring the safety of the elevator opening and preventing it from falling. The safety warning component is located on the side of the telescopic component away from the elevator opening, and it uses light to provide a safety warning to prevent danger at the elevator opening.

[0008] The technical effects of the non-destructive vertical protective fixing device for construction process provided by the present invention are as follows: (1) The protective fixing device can significantly reduce the risk of construction workers or pedestrians falling into the elevator shaft due to accident, thereby ensuring personnel safety.

[0009] (2) This protective device is designed for quick installation, which greatly improves the installation efficiency of the protective device, reduces construction time, and also makes it easy to disassemble quickly when needed.

[0010] (3) The protective fixing device is designed with adjustable function, which can be adapted to elevator entrances of different sizes and made accordingly to meet the needs of different scenarios.

[0011] (4) The protective fixing device is equipped with a safety warning component, which can remind pedestrians in low light environments, further enhancing the safety protection effect.

[0012] (5) A large area of ​​the elevator entrance is covered with protective netting, which can not only prevent pedestrians from falling, but also provide cushioning and reduce injury in the event of a fall.

[0013] (6) Using clamping components for fixing and clamping avoids drilling holes in the wall during the fixing process, protecting the wall and reducing labor intensity.

[0014] (7) The telescopic frame is telescopic and adjustable, suitable for walls of different thicknesses and elevator entrances of different widths, and has good practicality.

[0015] (8) It is a detachable assembly mode, which makes it more convenient to transport and install, and is especially suitable for use in places with narrow corridor space.

[0016] Based on the above technical solution, the non-destructive vertical protective fixing device for construction process of the present invention can be further improved as follows:

[0017] The telescopic frame includes horizontal bars and vertical bars. The horizontal bars are formed by connecting and fixing multiple solid bars to both ends of the telescopic assembly. The vertical bars are formed by connecting and fixing multiple solid bars to both ends of the telescopic assembly. The number of horizontal bars and vertical bars is determined according to the width and height of the elevator entrance. The number of telescopic assemblies is determined according to the number of horizontal bars and vertical bars.

[0018] Furthermore, the telescopic assembly includes a fixed rod, an electromagnetic repulsion component, and a connector. The fixed rod is a hollow cylindrical structure with two sides and a solid structure at its center. The horizontal bar and the vertical bar are correspondingly arranged at both ends of the fixed rod. The electromagnetic repulsion component is located inside the fixed rod and electromagnetically repels the ends of the horizontal bar and the vertical bar near the electromagnetic repulsion component, thus determining the structural length of the interconnected horizontal bar, vertical bar, and fixed rod. The connector is provided at the connection position between the fixed rod and the horizontal bar and the vertical bar. The connector is used to press the connection position between the fixed rod and the corresponding horizontal bar and vertical bar with spring clamping force to ensure the stability of the horizontal bar and vertical bar connected by the telescopic assembly.

[0019] The beneficial effects of adopting the above-mentioned improved scheme are as follows: Adjusting the length of the telescopic frame using the principle of electromagnetic repulsion allows for precise and controllable thrust, thus achieving accurate adjustment of the overall length of the telescopic frame with higher precision and better repeatability. Electromagnetic repulsion does not involve mechanical contact or friction, therefore eliminating wear, extending the component's lifespan, and reducing maintenance costs. The electromagnetic force has a fast response speed, enabling rapid and dynamic length adjustment to adapt to changing environments and needs. By controlling the current in the coil, the length of the telescopic component can be remotely controlled, facilitating operation and management, especially in situations where direct operation is difficult.

[0020] Furthermore, the electromagnetic repulsion component includes a base, a first coil, a second coil, and a repulsion plate. The base is rectangular, with one end fixed to one side of the solid structure inside the fixed rod, and the first coil wound around the other end. The first coil is a hollow cylindrical coil wound from enameled copper wire, used to generate a first changing magnetic field. The second coil is wound around the adjacent horizontal or vertical rod of the base, also a hollow cylindrical coil wound from enameled copper wire, used to generate a second changing magnetic field. The first and second coils are coaxially arranged. The repulsion plate is a circular thick sheet located between the first and second coils, used to be repelled by the magnetic fields generated by the first and second coils. A spring damper, made of stainless steel, is connected between one end of the base and one end of the corresponding horizontal or vertical rod, with one end fixed to the base and the other end fixed to the corresponding horizontal or vertical rod, used to suppress vibration. The first and second coils are respectively connected to a power source. Reflective marks are provided on the edge of the repulsion plate for use with an external photoelectric sensor to determine its precise position.

[0021] The beneficial effects of adopting the above-mentioned improved scheme are as follows: there is an interaction between the two magnetic fields. When the two magnetic fields are the same, they interact and generate a repulsive force; when the two magnetic fields are opposite, they interact and generate an attractive force. The repulsive force generated between the first coil and the second coil is used to adjust the length of the telescopic frame. By controlling the current intensity of the coils, the strength of the magnetic fields can be adjusted, thereby changing the strength of the magnetic field interaction.

[0022] By moving the reflective markers, changes in the repulsive force can be observed intuitively, allowing operators to easily monitor and detect the system's status. Since the markers' position directly reflects changes in the repulsive force, precise control of the repulsive force can be achieved by adjusting the markers' positions.

[0023] Furthermore, a heat sink is provided on the side of the base away from the first coil to dissipate heat in a timely manner and prevent the coil assembly from overheating; the heat sink has a fish-scale structure.

[0024] Insulating layers are provided on the outer walls of the fixed rod, as well as on the outer walls of the horizontal and vertical rods, to prevent leakage.

[0025] Furthermore, the connector includes a spiral rod, a connecting lug, and a connecting spring. A through hole is provided at the corresponding position of the horizontal bar or the vertical bar. The spiral rod is spiraled into the through hole to form a sealing structure with the horizontal bar or the vertical bar. The connecting lug is provided at the center position of the fixing rod. The connecting spring is connected between the spiral rod and the connecting lug. The connecting spring is used to tighten the connection between the telescopic component and the telescopic frame. The direction of the tightening force is parallel to the direction of the repulsive force of the electromagnetic repulsive element inside the corresponding fixing rod.

[0026] A through hole is provided at the position corresponding to the connecting ear of the spiral rod. The through hole is used to insert a vertical rod, which is a steel bar, into the spiral rod and the connecting ear to ensure the horizontality of the connection position between the telescopic component and the corresponding telescopic frame.

[0027] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the connectors can effectively fix the telescopic frame and telescopic components, preventing them from accidentally falling off during operation and ensuring the stability and safety of the system. It can also enhance the structural strength between the telescopic frame and telescopic components, improving the overall durability and reliability of the system.

[0028] Furthermore, the clamping component has a U-shaped structure, with one end connected to the side wall of the telescopic component and the other end extending in a predetermined shape toward the elevator entrance. A compression spring is provided inside the U-shape to ensure the stability of the clamping component. The clamping component is made of high-hardness memory metal.

[0029] The crossbar is equipped with a hook near the elevator entrance, which is attached to the top of the inner wall of the elevator entrance to further ensure the stability of the protective fixing device.

[0030] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the clamping component has a certain degree of elasticity, which can be quickly installed on the elevator entrance and can also be quickly disassembled, simplifying the installation steps and helping to improve work efficiency.

[0031] Furthermore, the elastic band has a double-layer structure and is respectively disposed on both sides of the protective net to fix the protective net and prevent it from falling off; the installation component is a safety belt structure.

[0032] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the first layer of elastic band can prevent the safety net from falling into the elevator shaft, ensuring that pedestrians and workers will not be in danger due to the safety net falling off.

[0033] The second layer of elastic bands enhances the overall structural strength of the protective netting, enabling it to withstand greater loads and external forces. The reinforced netting better absorbs impacts when in contact with objects, reducing the impact on other equipment and personnel. Furthermore, the reinforced netting is more stable, reducing swaying and shaking during use and improving system stability.

[0034] Furthermore, the mounting groove has an M-shaped structure, and the two ends of the protective net are fastened into the corresponding mounting groove to form a mesh structure.

[0035] Furthermore, the safety warning component includes a touch sensor, LED lights, and reflective prisms. The LED lights are disposed inside the telescopic frame and connected to a power source. The reflective prisms are disposed between adjacent LED lights to reflect the light emitted by the LED lights, thereby increasing their illumination area. The touch sensor is disposed on the surface of the telescopic frame to detect the presence of objects.

[0036] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: when personnel inadvertently approach the dangerous area at the elevator entrance, the touch sensor can be triggered immediately, and the touch signal can be transmitted to the construction monitoring personnel, facilitating timely handling of the emergency. LED lights can alert construction workers and other personnel to potential hazards in the elevator entrance area, and reflective prisms enhance the visual effect, attracting their attention.

[0037] Compared with existing technologies, the beneficial effects of the non-destructive vertical protective fixing device for construction processes provided by this invention are:

[0038] (1) Protective fixing devices can significantly reduce the risk of construction workers or pedestrians falling into elevator shafts due to accidents, thereby ensuring personnel safety.

[0039] (2) This protective device is designed for quick installation, which greatly improves the installation efficiency of the protective device, reduces construction time, and also makes it easy to disassemble quickly when needed.

[0040] (3) The protective fixing device is designed with adjustable function, which can be adapted to elevator entrances of different sizes and made accordingly to meet the needs of different scenarios.

[0041] (4) The protective fixing device is equipped with a safety warning component, which can remind pedestrians in low light environments, further enhancing the safety protection effect.

[0042] (5) A large area of ​​the elevator entrance is covered with protective netting, which can not only prevent pedestrians from falling, but also provide cushioning and reduce injury in the event of a fall.

[0043] (6) Using clamping components for fixing and clamping avoids drilling holes in the wall during the fixing process, protecting the wall and reducing labor intensity.

[0044] (7) The telescopic frame is telescopic and adjustable, suitable for walls of different thicknesses and elevator entrances of different widths, and has good practicality.

[0045] (8) It is a detachable assembly mode, which makes it more convenient to transport and install, and is especially suitable for use in places with narrow corridor space. Attached Figure Description

[0046] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a structural schematic diagram of a non-destructive vertical protective fixing device used in the construction process;

[0048] Figure 2 A schematic diagram of the internal structure of a telescopic component of a non-destructive vertical protective fixing device used in the construction process;

[0049] Figure 3 A front view of the clamping assembly of a non-destructive vertical protective fixing device used in the construction process;

[0050] Figure 4 A side view of a non-destructive vertical protective fixing device used in the construction process;

[0051] Figure 5 This is a schematic diagram of a non-destructive vertical protective fixing device coil used in the construction process;

[0052] The attached diagram lists the components represented by each number as follows:

[0053] 10. Telescopic frame; 11. Horizontal bar; 12. Vertical bar; 20. Telescopic assembly; 21. Fixed rod; 22. Electromagnetic repulsion component; 221. Base; 222. First coil; 223. Second coil; 224. Repulsion plate; 23. Connector; 231. Helical rod; 232. Connecting ear; 233. Connecting spring; 30. Pressing assembly; 40. Elastic band; 50. Protective net; 60. Safety warning assembly; 61. Touch sensor; 62. LED light; 63. Reflective prism. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0055] like Figure 1-5 The diagram illustrates an embodiment of a non-destructive vertical protective fixing device for construction processes provided by the present invention. This embodiment includes a telescopic frame 10, telescopic components 20, a clamping component 30, an elastic band 40, a protective net 50, and a safety warning component 60. The telescopic frame 10 has a square structure, with telescopic components 20 installed both vertically and horizontally. The telescopic components 20 are used to adjust the length and width of the telescopic frame 10 and to securely lock it after adjustment. The dimensions of the telescopic frame 10 are the same as the dimensions of the elevator entrance. A clamping component 30 is installed on the side adjacent to the elevator entrance, and the clamping component 30 is used to press and tighten the device. The telescopic frame 10 is tightly fixed to the side wall of the elevator entrance, ensuring a secure connection. Elastic band 40 mounting components are installed at the four corners of the telescopic frame 10, with the elastic band 40 fixed to the mounting components to seal the elevator entrance. Protective netting 50 mounting grooves are provided around the perimeter of the telescopic frame 10, with the protective netting 50 engaging in the mounting grooves to create a mesh structure inside the telescopic frame 10, ensuring the safety of the elevator entrance and preventing it from falling. A safety warning component 60 is installed on the side of the telescopic component 20 furthest from the elevator entrance, using lights to provide a safety warning and prevent danger at the elevator entrance.

[0056] In the above technical solution, the telescopic frame 10 includes a horizontal bar 11 and a vertical bar 12. The horizontal bar 11 is formed by connecting and fixing multiple solid bars to both ends of the telescopic assembly 20. The vertical bar 12 is formed by connecting and fixing multiple solid bars to both ends of the telescopic assembly 20. The number of horizontal bars 11 and vertical bars 12 is determined according to the width and height of the elevator opening. The number of telescopic assemblies 20 is determined according to the number of horizontal bars 11 and vertical bars 12.

[0057] Furthermore, in the above technical solution, the telescopic component 20 includes a fixed rod 21, an electromagnetic repulsion component 22, and a connecting component 23. The fixed rod 21 is a hollow circular tube structure on both sides, with its center position set as a solid structure. The horizontal rod 11 and the vertical rod 12 are respectively arranged at both ends of the fixed rod 21. The electromagnetic repulsion component 22 is arranged inside the fixed rod 21 and electromagnetically repels the ends of the horizontal rod 11 and the vertical rod 12 near the electromagnetic repulsion component 22, thus determining the structural length of the interconnected horizontal rod 11, vertical rod 12, and fixed rod 21. The connecting component 23 is provided at the connection position between the fixed rod 21 and the horizontal rod 11 and the vertical rod 12. The connecting component 23 is used to press the connection position between the fixed rod 21 and the corresponding horizontal rod 11 and vertical rod 12 through the spring clamping force to ensure the stability of the horizontal rod 11 and vertical rod 12 connected to the telescopic component 20.

[0058] Furthermore, in the above technical solution, the electromagnetic repulsion component 22 includes a base 221, a first coil 222, a second coil 223, and a repulsion plate 224. The base 221 is rectangular, with one end fixed to one side of the solid structure inside the fixing rod 21, and the other end wound with the first coil 222. The first coil 222 is a hollow cylindrical coil wound from enameled copper wire, used to generate the first changing magnetic field. The second coil 223 is wound on the adjacent horizontal bar 11 or vertical bar 12 of the base 221, and is also a hollow cylindrical coil wound from enameled copper wire, used to generate the second changing magnetic field. The first coil 222 and the second coil 223 are... The shaft is configured such that the repulsion plate 224 is a circular thick sheet located between the first coil 222 and the second coil 223, and is used to be repelled by the magnetic field generated by the first coil 222 and the second coil 223; a spring damper made of stainless steel is connected between one end of the base 221 and one end of the corresponding horizontal bar 11 or vertical bar 12, one end of which is fixed to the base 221 and the other end is fixed to the corresponding horizontal bar 11 or vertical bar 12, and is used to suppress vibration; the first coil 222 and the second coil 223 are respectively connected to the power supply; reflective marks are provided on the edge of the repulsion plate 224 for use with external photoelectric sensors to determine its precise position.

[0059] The telescopic component 20 has a transparent structure.

[0060] Furthermore, in the above technical solution, a heat sink is provided on the side of the base 221 away from the first coil 222 for timely heat dissipation and to prevent the coil assembly from overheating; the heat sink has a fish-scale structure.

[0061] Insulating layers are provided on the outer wall of the fixed rod 21, as well as on the outer walls of the horizontal rod 11 and the vertical rod 12, to prevent leakage.

[0062] Furthermore, in the above technical solution, the connector 23 includes a spiral rod 231, a connecting ear 232, and a connecting spring 233. A through hole is provided at the corresponding position of the horizontal bar 11 or the vertical bar 12. The spiral rod 231 spirals into the through hole to form a sealing structure with the horizontal bar 11 or the vertical bar 12. A connecting ear 232 is provided at the center position of the fixing rod 21. A connecting spring 233 is connected between the spiral rod 231 and the connecting ear 232. The connecting spring 233 is used to tighten the connection between the telescopic component 20 and the telescopic frame 10. The direction of the tightening force is parallel to the direction of the repulsion force of the electromagnetic repulsion component 22 inside the corresponding fixing rod 21.

[0063] A through hole is provided at the position corresponding to the connecting ear 232 of the spiral rod 231. The through hole is used to insert a vertical rod, which is a steel bar, into the spiral rod 231 and the connecting ear 232 to ensure the horizontality of the connection position between the telescopic component 20 and the corresponding telescopic frame 10.

[0064] Furthermore, in the above technical solution, the clamping component 30 has a U-shaped structure, one end of which is connected to the side wall of the telescopic component 20, and the other end extends in a predetermined shape toward the elevator opening. A compression spring is provided inside the U-shaped structure to ensure the stability of the clamping component 30. The clamping component 30 is made of high-hardness memory metal.

[0065] A hook is installed on the crossbar 11 near the elevator entrance. The hook is attached to the top of the inner wall of the elevator entrance to further ensure the stability of the protective fixing device.

[0066] Furthermore, in the above technical solution, the elastic band 40 includes a double-layer structure, which is respectively set on both sides of the protective net 50 to fix the protective net 50 and prevent the protective net 50 from falling; the installation component is a safety belt structure.

[0067] Furthermore, in the above technical solution, the mounting groove is an M-shaped structure, and the two ends of the protective net 50 are fastened into the corresponding mounting groove to form a mesh structure.

[0068] Furthermore, in the above technical solution, the safety warning component 60 includes a touch sensor 61, an LED light 62, and a reflective prism 63. The LED light 62 is disposed inside the telescopic frame 10 and connected to a power source. A reflective prism 63 is disposed between adjacent LED lights 62. The reflective prism 63 is used to reflect the light emitted by the LED light 62 to expand its illumination area. The touch sensor 61 is disposed on the surface of the telescopic frame 10 and is used to detect the presence of an object.

[0069] In use, the telescopic frame 10 is installed on the elevator door frame, and the clamping assembly 30 secures the telescopic frame 10 to the door frame. The relative lengths of the horizontal bar 11 and vertical bar 12 extending into the telescopic assembly 20 are adjusted to ensure complete coverage of the door frame by the telescopic frame 10. Different currents are applied to the first coil 222 and the second coil 223, generating different electric fields that are mutually repulsive. As the current changes, the electric field strength changes, and the relative distance between the telescopic frame 10 and the base 221 changes. The repulsion plate 224 clearly and intuitively converts this change in electric field strength into mechanical motion. When a pedestrian accidentally falls into the elevator shaft, the safety net 50 cushions the fall. The safety warning assembly 60 illuminates to further reduce the risk of accidents.

[0070] Specifically, the principle of this invention is as follows: In use, the telescopic frame 10 is installed on the door frame of the elevator door, and the telescopic frame 10 is fastened to the door frame by the clamping assembly 30; the relative lengths of the horizontal bar 11 and the vertical bar 12 extending into the telescopic assembly 20 are adjusted to ensure that the telescopic frame 10 completely covers the door frame. Different currents are passed through the first coil 222 and the second coil 223 respectively, and different electric fields are generated on the first coil 222 and the second coil 223, ensuring that the two generated electric fields are mutually repulsive; as the current changes, the intensity of the electric field changes accordingly, and the relative distance between the telescopic frame 10 and the base 221 changes. The repulsion plate 224 can clearly and intuitively convert the change in electric field intensity into mechanical movement. When a pedestrian accidentally falls to the elevator entrance, the protective net 50 will buffer the pedestrian to prevent the pedestrian from falling from the elevator shaft. The safety warning assembly 60 illuminates to alert pedestrians, further reducing the risk of accidents.

[0071] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A non-destructive vertical protective fixing device for construction processes, characterized in that, The system includes a telescopic frame (10), a telescopic assembly (20), a clamping assembly (30), an elastic band (40), a protective net (50), and a safety warning assembly (60). The telescopic frame (10) is a square structure, with the telescopic assembly (20) installed in both its vertical and horizontal positions. The telescopic assembly (20) is used to adjust the length and width of the telescopic frame (10) and to lock it securely after adjustment. The telescopic frame (10) is the same size as the elevator entrance, and the clamping assembly (30) is installed on the side adjacent to the elevator entrance. The clamping assembly (30) is used to fasten and press the telescopic frame (10) against the side wall of the elevator entrance, thus securing the telescopic frame (10) to the elevator entrance. Tightly fixed; the four corners of the telescopic frame (10) are provided with the installation components of the elastic band (40), and the elastic band (40) is fixed on the installation components to close the elevator entrance; the four sides of the telescopic frame (10) are provided with the installation grooves of the protective net (50), and the protective net (50) is engaged in the installation grooves to form a mesh structure inside the telescopic frame (10) to ensure the safety of the elevator entrance and prevent it from falling; the side of the telescopic component (20) away from the elevator entrance is provided with the safety warning component (60), and the safety warning component (60) is used to provide a safety warning through light to prevent danger at the elevator entrance; The telescopic assembly (20) includes a fixed rod (21), an electromagnetic repulsion component (22), and a connecting component (23). The fixed rod (21) is a hollow cylindrical structure on both sides, with a solid structure at its center. A horizontal bar (11) and a vertical bar (12) are respectively arranged at both ends of the fixed rod (21). The electromagnetic repulsion component (22) is arranged inside the fixed rod (21) and electromagnetically repels the horizontal bar (11) and the vertical bar (12) at the end closest to the electromagnetic repulsion component (22), thus ensuring mutual connection. The structure consists of the horizontal bar (11), the vertical bar (12), and the fixed bar (21); the fixed bar (21) is connected to the horizontal bar (11) and the vertical bar (12) by the connection of the horizontal bar (11) and the vertical bar (12) by the connection of the horizontal bar (11) and the vertical bar (12) by the spring compression force, so as to ensure the stability of the horizontal bar (11) and the vertical bar (12) connected by the telescopic component (20); The electromagnetic repulsion component (22) includes a base (221), a first coil (222), a second coil (223), and a repulsion plate (224). The base (221) is rectangular, with one end fixed to one side of the solid structure inside the fixed rod (21), and the first coil (222) is wound around the other end. The first coil (222) is a hollow cylindrical coil wound from enameled copper wire, used to generate the first changing magnetic field. The second coil (223) is wound around the horizontal rod (11) or the vertical rod (12) adjacent to the base (221), and is also a hollow cylindrical coil wound from enameled copper wire, used to generate the second changing magnetic field. The first coil (222) and the second coil (223) are coaxially arranged. The repulsion plate... (224) is a circular thick plate located between the first coil (222) and the second coil (223) to be repelled by the magnetic field generated by the first coil (222) and the second coil (223); a spring damper made of stainless steel is connected between one end of the base (221) and one end of the corresponding horizontal bar (11) or vertical bar (12), one end of which is fixed on the base (221) and the other end is fixed on the corresponding horizontal bar (11) or vertical bar (12) to suppress vibration; the first coil (222) and the second coil (223) are respectively connected to the power supply; the edge of the repulsion plate (224) is provided with reflective marks to cooperate with external photoelectric sensors to determine its precise position.

2. The non-destructive vertical protective fixing device for construction process according to claim 1, characterized in that, The telescopic frame (10) includes a horizontal bar (11) and a vertical bar (12). The horizontal bar (11) is formed by connecting and fixing multiple solid bars to both ends of the telescopic assembly (20). The vertical bar (12) is formed by connecting and fixing multiple solid bars to both ends of the telescopic assembly (20). The number of the horizontal bar (11) and the vertical bar (12) is determined according to the width and height of the elevator opening. The number of the telescopic assembly (20) is determined according to the number of the horizontal bar (11) and the vertical bar (12).

3. The non-destructive vertical protective fixing device for construction process according to claim 2, characterized in that, A heat sink is provided on the side of the base (221) away from the first coil (222) for timely heat dissipation and to prevent the coil assembly from overheating; the heat sink has a fish scale structure. Insulating layers are provided on the outer wall of the fixed rod (21), the outer wall of the horizontal rod (11), and the outer wall of the vertical rod (12) to prevent leakage.

4. The non-destructive vertical protective fixing device for construction process according to claim 3, characterized in that, The connector (23) includes a spiral rod (231), a connecting lug (232), and a connecting spring (233). A through hole is provided at the corresponding position of the horizontal bar (11) or the vertical bar (12). The spiral rod (231) spirals into the through hole to form a sealing structure with the horizontal bar (11) or the vertical bar (12). The connecting lug (232) is provided at the center position of the fixed rod (21). The connecting spring (233) is connected between the spiral rod (231) and the connecting lug (232). The connecting spring (233) is used to tighten the connection between the telescopic component (20) and the telescopic frame (10). The direction of the tightening force is parallel to the direction of the repulsion force of the electromagnetic repulsion component (22) inside the corresponding fixed rod (21). A through hole is provided at the position corresponding to the connecting ear (232) of the spiral rod (231). The through hole is used to insert a vertical rod, which is a steel bar, into the spiral rod (231) and the connecting ear (232) to ensure the horizontality of the connection position between the telescopic component (20) and the corresponding telescopic frame (10).

5. A non-destructive vertical protective fixing device for construction processes according to claim 4, characterized in that, The clamping component (30) has a U-shaped structure. One end of it is connected to the side wall of the telescopic component (20), and the other end extends in a predetermined shape toward the elevator entrance. A compression spring is provided inside the U-shaped structure to ensure the stability of the clamping component (30). The clamping component (30) is made of high-hardness memory metal. The crossbar (11) is equipped with a hook near the elevator entrance, which is attached to the top of the inner wall of the elevator entrance to further ensure the stability of the protective fixing device.

6. A non-destructive vertical protective fixing device for construction processes according to claim 5, characterized in that, The elastic band (40) includes a double-layer structure and is respectively set on both sides of the protective net (50) to fix the protective net (50) and prevent the protective net (50) from falling off; the installation component is a safety belt structure.

7. A non-destructive vertical protective fixing device for construction processes according to claim 6, characterized in that, The mounting groove is an M-shaped structure, and the two ends of the protective net (50) are fastened into the corresponding mounting groove to form a mesh structure.

8. A non-destructive vertical protective fixing device for construction processes according to claim 7, characterized in that, The safety warning component (60) includes a touch sensor (61), an LED light (62), and a reflective prism (63). The LED light (62) is disposed inside the telescopic frame (10) and connected to a power source. The reflective prism (63) is disposed between adjacent LED lights (62) to reflect the light emitted by the LED light (62) to expand its illumination area. The touch sensor (61) is disposed on the surface of the telescopic frame (10) to detect the presence of an object.

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