A protective curtain installation and driving device for tunnel blasting

Abstract

This utility model relates to the technical field of tunnel construction protection, and in particular to an installation and driving device for a protective blasting curtain used in tunnel blasting. The utility model includes a support rail and a protective blasting curtain. The protective blasting curtain is suspended on the support rail and slides along the support rail. The top of the protective blasting curtain is connected and fixed to a pulley, which rolls along the support rail. An installation clamp is installed below the pulley, and the protective blasting curtain is clamped and installed on the installation clamp. By setting a pulley at the top of the protective blasting curtain and making the pulley roll along the support rail, the resistance when opening and closing the protective blasting curtain is significantly reduced. Construction personnel can easily push or pull the protective blasting curtain, greatly reducing manpower consumption and improving the efficiency of protective operations. It overcomes the shortcomings of traditional hanging rings with high friction between steel pipes and reinforcing bars. The protective blasting curtain can move and be positioned smoothly, ensuring that protective measures can be completed in a timely and standardized manner before and after blasting operations, effectively blocking the spread of flying rocks, shock waves, and dust generated by blasting.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction protection, and in particular to an installation and driving device for a protective blasting curtain for tunnel blasting. Background Technology

[0002] Tunnel blasting is one of the main methods widely used in current tunnel excavation projects. Its basic principle is to place explosives in rock or soil layers and use the impact energy and blasting stress generated by the explosion to break and loosen the rock mass, thereby realizing the rapid excavation of the tunnel cross section. Tunnel blasting has the advantages of high construction efficiency and wide adaptability to geological conditions, especially in hard rock strata and complex geological environments.

[0003] During blasting operations, the explosion of explosives generates a large amount of flying rocks, shock waves, and dust, which can easily cause damage and impact to construction personnel, on-site equipment, and the surrounding environment. In order to effectively block flying rocks, mitigate blast shock waves, and control dust diffusion, protective blast curtains are usually set up in front of the blast. As a flexible protective barrier, the blast curtain can significantly reduce the hazards of blasting and improve the level of on-site safety. In addition, the use of the blast curtain can also alleviate the interference of blasting on surrounding residents and the environment, reduce the probability of accidents, and is a necessary measure to ensure the safety of tunnel blasting.

[0004] Currently, construction workers often use horizontally laid steel pipes, reinforcing bars, or steel strands above the tunnel entrance as the mounting base for the blasting curtain. The protective blasting curtain usually consists of several curtains with hooks or rings, which are suspended from the aforementioned base structure during installation. After the blasting operation, the curtain needs to be pulled open laterally to restore the working surface. However, the blasting curtain itself is quite heavy, especially in tunnels with high heights or thick materials, making it extremely difficult to pull. Due to the difficulty of operation, some construction workers, in pursuit of convenience, often do not install the protective blasting curtain according to specifications, or only install it perfunctorily, failing to fully realize its protective function and posing significant safety risks.

[0005] Publication No. CN217632434U discloses a protective structure for blasting construction of a subway connecting passage, including a left-line tunnel and a right-line tunnel, with a connecting passage between the left-line tunnel and the right-line tunnel to be blasted. Connecting passage openings are provided on the sidewalls of the left-line tunnel and the right-line tunnel at the ends corresponding to the connecting passage openings. Segmentation is installed in the inner walls of the left-line tunnel and the right-line tunnel except for the connecting passage openings. Stress supports are spaced along the axis inside the left-line tunnel and the right-line tunnel. Anti-rockfall curtain devices are installed on the opposite sides of the connecting passage openings in the left-line tunnel and the right-line tunnel. The protective structure in this technical content is a folding and sliding type, with a complex installation structure, requiring good installation conditions, and having uniform installation specifications, making it unsuitable for construction at tunnel entrances of different heights. Summary of the Invention

[0006] To address the problems of cumbersome and inefficient installation of protective blasting curtains and to improve the practicality and reliability of protective measures, this utility model provides an installation and driving device for protective blasting curtains used in tunnel blasting.

[0007] The present invention provides a protective blasting curtain installation and driving device for tunnel blasting, which adopts the following technical solution: A protective blasting curtain installation and driving device for tunnel blasting includes a support rail and a protective blasting curtain. The protective blasting curtain is suspended on the support rail and is slidably installed along the support rail. The top of the protective blasting curtain is connected and fixed to a pulley, which is rolled along the support rail. An installation clamp is installed below the pulley, and the protective blasting curtain is clamped and installed on the installation clamp.

[0008] By installing pulleys at the top of the blast curtain and having them roll along the support rail, the resistance during opening and closing of the blast curtain is significantly reduced. Construction personnel can easily push or pull the blast curtain, greatly reducing manpower consumption and improving the efficiency of protective operations. It overcomes the shortcomings of traditional hanging rings with high friction between steel pipes and reinforcing bars. The blast curtain can move and be positioned smoothly, ensuring that protective measures can be completed in a timely and standardized manner before and after blasting operations. It effectively blocks the spread of flying rocks, shock waves, and dust generated by blasting, ensuring the safety of construction personnel and the surrounding environment and reducing safety hazards. The support rail structure provides a stable and reliable suspension foundation for the blast curtain. Regardless of changes in tunnel height or the weight of the blast curtain, it can achieve smooth sliding and stable suspension. It is suitable for different types of tunnel scenarios and blast curtains of various materials. The blast curtain is connected to the pulleys through the mounting clips, making it flexible to assemble and disassemble, and easy to maintain and replace daily. The entire device has a simple structure, is easy to assemble and debug on site, and is conducive to promotion and application. Because the blast curtain is easy to operate, construction personnel can more easily carry out protective operations according to specifications, reducing safety accidents caused by inconvenient operation or shoddy workmanship.

[0009] Furthermore, telescopic frames are provided at both ends of the support rail and are fixed to the tunnel entrance via the telescopic frames. The telescopic frames are equipped with mounting rods and are fixed to the side wall at the tunnel entrance via the mounting rods.

[0010] By installing telescopic frames at both ends of the support rail, the length of the support rail can be flexibly adjusted according to the actual tunnel opening width, allowing the device to adapt to tunnel openings of different sizes and structures. This greatly enhances the equipment's versatility and applicability, facilitating its widespread application at various construction sites. The telescopic frames are firmly connected to the tunnel opening sidewalls via tie rods, enhancing the stability and load-bearing capacity of the entire protective device. Even with heavy protective curtains or repeated movements, the support structure is not prone to loosening or deformation, effectively improving safety performance and ensuring protective effectiveness. The combined design of the telescopic frames and tie rods simplifies the installation process, eliminating the need for complex modifications or special construction to the tunnel opening structure. Construction personnel can quickly adjust and fix the support rails according to actual needs, saving significant installation and dismantling time and improving work efficiency. The structure of the telescopic frames and tie rods facilitates daily maintenance and replacement. When it is necessary to move or dismantle the equipment, simply loosening the tie rods is sufficient, without damaging the original tunnel structure, facilitating the reuse and long-term maintenance management of the equipment.

[0011] Furthermore, the telescopic frame at one end of the support rail is divided into upper and lower groups and its telescopic movement is controlled independently. The front end of the telescopic frame is provided with a top plate, and the top plate has a mounting hole. The telescopic frame is connected to an adjusting screw, and the telescopic frame is slidably installed on the support rail by adjusting the screw. The telescopic frame and the support rail are fixed together by fixing bolts.

[0012] The telescopic frame is divided into upper and lower groups, each with independently controlled telescopic movement. The installation length and position of the upper and lower sections can be independently adjusted to meet the actual needs of tunnel entrances with irregular structures or significant height differences. This ensures precise positioning of the support rails and enhances the device's adaptability to special tunnel entrances. The top plate is located at the front end of the telescopic frame and connects to other structures through mounting holes, strengthening the overall connection. The upper and lower groups of the telescopic frame bear loads simultaneously, distributing mechanical pressure and improving the device's stability and load-bearing capacity. This effectively prevents structural deformation or instability caused by single-point stress. The sliding of the telescopic frame on the support rails is controlled by adjusting the screws. Construction personnel can easily adjust the telescopic length and positioning according to actual site requirements without complex tools, making operation simple and quick, shortening installation and commissioning time, and improving work efficiency. The telescopic frame and support rails are connected by fixing bolts to ensure secure locking after adjustment, preventing accidental displacement or loosening during use and improving the overall safety and reliability of the device.

[0013] Furthermore, an expansion head is provided at the end of the mounting rod, and the expansion head is connected to an adjusting screw, which controls the expansion of the expansion head.

[0014] The expansion head expands by adjusting the screw, enabling rapid fixing of the tie rod without complex construction processes or additional tools, significantly improving installation efficiency and making it suitable for rapid on-site operations. The expansion head expands outward under the action of the adjusting screw, tightly fitting the wall of the mounting hole or the inner wall of the substrate, providing a strong anchoring force to prevent the tie rod from loosening or falling off. This significantly improves the safety and reliability of the overall structure. The adjusting screw can be flexibly adjusted to suit substrates of different thicknesses, materials, or sizes, enhancing the tie rod's adaptability to different installation environments. When disassembly or maintenance is required, simply reverse the rotation of the adjusting screw to retract the expansion head, facilitating the removal and reuse of the tie rod, reducing maintenance costs, and simplifying the maintenance process.

[0015] Furthermore, the support rail is an I-beam structure, the pulleys are respectively installed on both sides of the support rail, and the pulleys on both sides of the support rail are connected and combined through a wheel frame. The pulleys are connected and installed on the wheel frame through wheel bearings.

[0016] I-beams, used as support rails, possess excellent mechanical properties and high load-bearing capacity. They can effectively distribute and bear the load from pulleys and the equipment they support, improving the stability and safety of the overall structure. The pulleys are mounted on the wheel frame through wheel bearings. The application of bearings significantly reduces the frictional resistance when the pulleys rotate, making the pulleys run more smoothly and steadily, reducing energy consumption and wear, and extending the service life of the equipment.

[0017] Furthermore, the pulley drive is connected to a motor, and the motor is powered by an external power source.

[0018] The pulley system achieves automated drive through motor transmission, enabling the automatic movement of heavy objects or equipment, significantly improving work efficiency, reducing manpower input, and suitable for occasions requiring frequent or long-distance movement. The motor is powered by an external power source, facilitating electrification control. Multiple control methods such as buttons, remote control, and PLC can be added as needed to make the system operation more convenient, and even achieve remote automated management. Automated drive reduces the physical consumption during manual handling and operation, reducing the labor intensity of workers.

[0019] Furthermore, a locking clamp is movably mounted on the support rail, and the locking clamp is connected to a control motor. The locking clamp is oscillating and installed under the control of the control motor.

[0020] The locking clamp achieves automatic swing installation and locking / unlocking operations through motor control, without manual intervention. It can quickly and reliably lock or release the pulley system when needed, effectively preventing accidental movement and improving the safety of equipment operation. The motor-driven locking clamp can achieve precise positioning and motion control with fast response speed. It can automatically perform locking and unlocking according to the system operating status or operation requirements, enhancing the intelligence and flexibility of overall control.

[0021] Furthermore, the mounting clip is fixedly mounted in the insertion slot at the bottom of the wheel frame via a plug-in block.

[0022] The use of plug-in blocks and slots allows for rapid assembly and disassembly without complex tools, greatly improving the efficiency of on-site installation and maintenance, and shortening equipment assembly and replacement time. The modular plug-in design facilitates later maintenance and replacement. When damage occurs or the mounting clip needs to be replaced, it can be directly disassembled and replaced without disassembling other components, simplifying the maintenance process and reducing operation and maintenance costs. The plug-in block and slot structure has a high degree of standardization, which facilitates mass production and quality control, and can also adapt to different specifications or models of wheel frames and mounting clips, improving the versatility and expandability of the components.

[0023] Furthermore, the bottom of the mounting clip consists of two parallel elastic plates, with through holes at corresponding positions on the two elastic plates, and fastening bolts are inserted into the through holes of the mounting clip.

[0024] Two parallel elastic plates are connected by fastening bolts, which can achieve uniform force distribution, form a reliable clamp between the mounting clip and the assembled part, prevent loosening, and improve the stability and safety of the overall structure. Through the structural design of through holes and fastening bolts, the assembly and disassembly process is simple and quick, without the need for special tools, which facilitates on-site maintenance and replacement, reducing downtime and labor costs.

[0025] Furthermore, a fixing plate is provided at the top of the anti-ballistic missile curtain, and the anti-ballistic missile curtain is installed on the mounting clip through the fixing plate. A gasket is provided at the installation gap between the fixing plate and the mounting clip.

[0026] The gasket between the fixing plate and the mounting clip effectively fills the installation gap, enhances the tightness of the connection, prevents the fireproof curtain from shifting or falling off due to loosening during use, and improves the stability of the overall structure. As an intermediate isolation layer, the gasket can reduce the direct contact between the fixing plate and the mounting clip, prevent scratches, wear and corrosion of metal parts, protect the surface integrity of each component, and extend the overall life of the equipment.

[0027] In summary, this utility model has the following beneficial technical effects: 1. The pulleys are installed by rolling along the support rail, which reduces friction and resistance during the opening and closing of the fireproof curtain. Construction personnel can easily push or pull it, greatly reducing manpower consumption and improving the efficiency of protective operations.

[0028] 2. The blast curtain can move smoothly and be quickly positioned to ensure timely protection before and after blasting operations, effectively blocking the spread of flying rocks, shock waves and dust, ensuring the safety of personnel and the environment, and reducing the occurrence of safety accidents.

[0029] 3. The support rail is an I-beam structure, which has high load-bearing capacity and stability. It can achieve smooth sliding and stable suspension regardless of changes in tunnel height or the weight of the curtain, making it suitable for different tunnel types and curtains made of various materials.

[0030] 4. The support rail is equipped with telescopic frames at both ends, which can flexibly adjust the length according to the width of the tunnel entrance, adapt to tunnels of different sizes and structures, enhance the applicability of the equipment, and facilitate its promotion and application on multiple construction sites.

[0031] 5. The telescopic frame is quickly fixed to the tunnel entrance sidewall by installing tie rods, and the expansion head is driven to expand by adjusting the screw. No complicated construction process and special tools are required, which greatly improves the installation efficiency and is suitable for rapid on-site operation.

[0032] 6. The mounting clip uses a plug-in block and plug-in slot for quick on-site assembly and disassembly, facilitating daily maintenance and replacement, reducing operation and maintenance costs, and enabling equipment reuse and long-term management.

[0033] 7. The two parallel elastic plates at the bottom of the mounting clamp are locked with fastening bolts to achieve uniform force and reliable clamping, improve the stability and safety of the device, and prevent the structure from loosening or being damaged by explosive impact.

[0034] 8. The movable locking clamp on the support rail is driven by a control motor, which automatically locks and unlocks, preventing the pulley system from moving accidentally and improving the safety and intelligence of the equipment operation.

[0035] 9. A gasket is placed between the anti-blast curtain fixing plate and the installation clamp to fill the installation gap, reduce metal wear and corrosion, protect the surface integrity of each component, and effectively extend the service life of the equipment.

[0036] 10. The pulley system can be configured with a motor drive to realize automatic or remote control of the movement of the blasting curtain, further reducing manual operation, improving work efficiency, and adapting to high-frequency or large-scale blasting construction scenarios. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the protective cannon curtain installation device of this utility model; Figure 2 for Figure 1 Another perspective structural diagram; Figure 3 for Figure 1 A magnified view of part A; Figure 4 for Figure 1 A magnified view of part B; Figure 5 for Figure 4 A magnified view of a portion at point E; Figure 6 for Figure 2A magnified view of a portion at point C; Figure 7 for Figure 2 A magnified view of part D.

[0038] Explanation of reference numerals in the attached figures: 1. Support rail; 11. Telescopic frame; 111. Top plate; 112. Adjusting screw; 113. Fixing bolt; 12. Mounting rod; 121. Expansion head; 122. Adjusting screw; 2. Pulley; 21. Wheel frame; 211. Wheel bearing; 22. Motor; 23. Locking clamp; 231. Control motor; 3. Mounting clamp; 31. Insertion block; 311. Insertion groove; 32. Fastening bolt; 4. Fireproof curtain; 41. Fixing plate; 42. Gasket. Detailed Implementation

[0039] The following will be combined with the appendix Figures 1-7 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0041] Example 1: This utility model discloses an installation and driving device for a protective blasting curtain used in tunnel blasting, referring to... Figure 1 and Figure 2 It includes a support rail 1 and a bulletproof curtain 4. The bulletproof curtain 4 is suspended on the support rail 1 and is slidably installed along the support rail 1. The top of the bulletproof curtain 4 is connected and fixed to a pulley 2. The pulley 2 is slidably installed along the support rail 1. An installation clip 3 is installed below the pulley 2, and the bulletproof curtain 4 is clamped and installed on the installation clip 3.

[0042] Select a suitable location and securely fix the support rail 1 to the top or side wall of the tunnel, ensuring that the rail is parallel to the ground and stable. Limiting devices should be installed at both ends of the support rail to prevent the pulley 2 from derailing. Inspect the surface of the rail to ensure that there are no obvious burrs or obstacles. Install the pulley 2 onto the support rail 1, ensuring that the pulley can roll smoothly. Install the mounting clip 3 below the pulley 2 and evenly clamp the top of the blast curtain 4 into the mounting clip 3 to ensure that the curtain is evenly stressed and without wrinkles. Check the tightness of all connecting parts to ensure that there is no looseness. Adjust the position of the blast curtain 4 so that it can slide freely on the support rail 1 to the predetermined protection position. The length or width of the curtain can be adjusted according to the tunnel cross-section size to ensure complete coverage of the blasting operation area.

[0043] Before blasting, slide the protective curtain 4 to the area requiring protection via pulley 2, check that the curtain is fully extended and covers the required area to prevent debris from flying, and confirm that the lower edge of the curtain is close to the ground or has an appropriate gap with the ground to prevent debris from penetrating from below. After the blasting operation is completed, the protective curtain 4 can be slid to one side along the support rail 1 to facilitate the passage of personnel and equipment. If pulley 2 is found to be stuck or support rail 1 is found to be deformed, it should be stopped and repaired in time. If the protective curtain 4 is damaged, it should be replaced or repaired in time to ensure the protective effect.

[0044] Example 2: Based on Example 1, the following is added: Reference Figures 1-4 The support rail 1 is equipped with telescopic frames 11 at both ends, and is fixed at the tunnel entrance by the telescopic frames 11. The telescopic frames 11 are equipped with mounting rods 12, and the telescopic frames 11 are fixed at the side wall at the tunnel entrance by the mounting rods 12.

[0045] Reference Figure 3 and Figure 4 The telescopic frame 11 at one end of the support rail 1 is divided into upper and lower groups and is controlled to telescopically move independently. The front end of the telescopic frame 11 is provided with a top plate 111, and the top plate 111 has a mounting hole. The telescopic frame 11 is connected to an adjusting screw 112. The telescopic frame 11 is slidably mounted on the support rail 1 by adjusting the screw 112. The telescopic frame 11 and the support rail 1 are connected and fixed by fixing bolts 113.

[0046] Reference Figure 5 An expansion head 121 is provided at the end of the mounting rod 12. The expansion head 121 is connected to an adjusting screw 122, and the expansion head 121 is controlled to expand by adjusting the screw 122.

[0047] First, move the support rail 1 to the predetermined position at the tunnel entrance, ensuring the rail length matches the tunnel width. Unfold the telescopic frames 11 at both ends of the support rail 1 and adjust them to a suitable length to match the actual dimensions of the tunnel entrance. The telescopic frames 11 are divided into upper and lower groups. Adjust the telescopic length of each group of telescopic frames 11 as needed to ensure precise matching of the height and position of the support rail 1. Align the mounting holes on the top plate 111 at the front end of the telescopic frame 11 with the corresponding positions at the tunnel entrance. Insert the adjusting screw 112 into the mounting holes on the top plate 111 and rotate the adjusting screw 112 to adjust the telescopic frame 11 at the tunnel entrance. After the device slides smoothly on the support rail 1 and is positioned, use fixing bolts 113 to firmly connect the telescopic frame 11 to the support rail 1. Install the mounting rod 12 on the telescopic frame 11, insert the end of the mounting rod 12 into the preset hole on the side wall of the tunnel entrance, insert the expansion head 121 at the end of the mounting rod 12 into the hole, rotate the adjusting screw 122 to cause the expansion head 121 to expand in the hole, and firmly fix the mounting rod 12 to the side wall of the tunnel to improve the stability of the overall device. Check all connecting parts to ensure that the telescopic frame 11, support rail 1, mounting rod 12 and expansion head 121 are all firmly fixed and there is no looseness.

[0048] Before blasting, the protective curtain 4 is slid to the blasting area via pulley 2 to ensure that the curtain is fully deployed and covers the entire protected area. After blasting, the protective curtain 4 is retracted to one side to facilitate the passage of personnel and equipment. If it is necessary to change the protected area or adapt to different tunnel entrance widths and heights, the lengths of the upper and lower sets of telescopic frames 11 can be adjusted by adjusting screw 112 to achieve quick adaptation of the support rail 1. If the support rail needs to be reinstalled, the fixing bolts 113 can be loosened, the telescopic frame 11 can be adjusted and then re-fixed. If it is necessary to strengthen the firmness, the number of installation tie rods 12 can be appropriately increased or the expansion head 121 can be strengthened. The installation tie rods 12 and expansion head 121 should be checked regularly to ensure that they are firmly expanded. The adjusting screw 122 should be tightened regularly to prevent loosening. The connecting fixing bolts 113 between the telescopic frame 11 and the support rail 1 should be checked to ensure that they are tight.

[0049] When installing the expansion head 121, ensure that it expands into the interior of the side wall to avoid the device becoming loose or slipping due to insufficient expansion. The contact surface between the installation rod 12 and the side wall should be clean and flat to prevent the expansion head from failing to expand properly.

[0050] The expansion head 121 includes two hinged rocker arms. By adjusting the screw 122, the angle of the two hinged rocker arms is changed, thereby causing the two hinged rocker arms to bend outward. One of the rocker arms forms a barbed structure to tighten the rock wall.

[0051] Example 3: Based on Example 1, the following is added: Reference Figure 1 , Figure 2 and Figure 7The support rail 1 is an I-beam structure. The pulleys 2 are respectively installed on both sides of the support rail 1, and the pulleys 2 on both sides of the support rail 1 are connected and combined through wheel frame 21. The pulleys 2 are connected and installed on the wheel frame 21 through wheel bearing 211.

[0052] Reference Figure 1 , Figure 2 and Figure 6 The pulley 2 is connected to a motor 22, which is powered by an external power source.

[0053] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7 A locking clip 23 is movably mounted on the support rail 1. The locking clip 23 is connected to a control motor 231, and the locking clip 23 is oscillating and installed under the control of the control motor 231.

[0054] Reference Figure 6 and Figure 7 The mounting clip 3 is fixedly installed in the insertion slot 311 at the bottom of the wheel frame 21 by the insertion block 31.

[0055] Reference Figure 6 and Figure 7 The bottom of the mounting clip 3 consists of two parallel elastic plates. The two elastic plates of the mounting clip 3 have through holes at corresponding positions, and fastening bolts 32 are inserted into the through holes of the mounting clip 3.

[0056] I-beams meeting strength requirements are selected as support rails 1 and installed at the top of the tunnel, ensuring the rails are parallel to the tunnel axis. Pulleys 2 are installed on both sides of the support rail 1, with each set of pulleys 2 connected by a wheel frame 21 to ensure synchronous operation. The pulleys 2 are mounted on the wheel frame 21 via wheel bearings 211, ensuring smooth rotation and low frictional resistance. The fit between the wheel frame 21 and the I-beam support rail 1 is checked to ensure all pulleys and bearings are free from jamming or loosening. Each set of pulleys 2 is connected to a motor 22, which is powered by a reliable external power source to ensure stable driving of the pulley assembly along the support rail 1. Power lines are laid and protected to prevent damage. In case of blasting, a locking clip 23 is movably installed on the support rail 1. The locking clip 23 is connected to a control motor 231 to realize the automatic swing locking function. The control motor 231 is adjusted to ensure that the locking clip 23 can accurately control the opening, closing or positioning of the anti-blasting curtain 4 to prevent unauthorized movement. The anti-blasting curtain 4 is fixed by the mounting clip 3. The bottom of the mounting clip 3 is provided with a plug block 31. The plug block 31 is inserted into the plug groove 311 at the bottom of the wheel frame 21 to ensure that the mounting clip 3 and the wheel frame 21 are firmly connected. The bottom of the mounting clip 3 consists of two parallel elastic plates with through holes. The plates are connected and locked by fastening bolts 32 to hold the top of the anti-blasting curtain 4, so that the curtain is evenly stressed and prevented from falling off.

[0057] Before the blasting operation, start the motor 22, which drives the pulley block to make the blasting curtain 4 slide along the I-beam support rail 1 and accurately unfold it to the protected area. When it is necessary to position or lock the blasting curtain, operate the control motor 231 to make the locking clamp 23 swing and lock in the designated position to prevent the blasting curtain from sliding accidentally. After the blasting is completed, release the locking clamp 23, and the motor 22 drives the pulley block to retract the blasting curtain 4 to a safe position.

[0058] If the anti-ballistic curtain 4 needs to be adjusted or replaced, loosen the fastening bolt 32, separate the elastic plate, remove or replace the curtain, and then re-clamp it. Regularly check the elastic plate and fastening bolt 32 to ensure that the clamping force is uniform and to prevent the anti-ballistic curtain from loosening or falling off.

[0059] Regularly check the operating status of motor 22 and control motor 231 to ensure reliable drive and locking functions. Check the lubrication of wheel bearing 211 to prevent jamming or damage due to insufficient lubrication. If the locking clamp 23 cannot swing normally or the motor malfunctions, repair or replace the relevant parts in time.

[0060] Example 4: Based on Example 1, the following is added: Reference Figure 6 and Figure 7 The anti-balloon curtain 4 has a fixing plate 41 at its top end. The anti-balloon curtain 4 is installed on the mounting clip 3 through the fixing plate 41. A gasket 42 is provided in the installation gap between the fixing plate 41 and the mounting clip 3.

[0061] Pre-sew or rivet a fixing piece 41 at the top of the anti-ballistic missile curtain 4. It is recommended that the fixing piece 41 be made of metal or high-strength composite material to ensure good load-bearing capacity and wear resistance. Insert the fixing piece 41 of the anti-ballistic missile curtain 4 into the clamping part of the mounting clip 3, that is, the installation gap between the two parallel elastic plates. Insert a shim 42 between the fixing piece 41 and the elastic plate of the mounting clip 3. The shim 42 can be made of rubber, silicone or high temperature resistant and wear-resistant polymer. Its main function is to buffer, prevent slipping and prevent direct metal contact that could cause wear or damage to the anti-ballistic missile curtain material. Adjust the position of the fixing piece 41 and the shim 42 so that the anti-ballistic missile curtain 4 is in a reasonable stress state, with the top aligned and without wrinkles or skewing.

[0062] Align the through holes on the two elastic plates of the mounting clip 3, insert the fastening bolts 32, and tighten the fastening bolts 32 evenly to make the elastic plates generate a reliable clamping force on the fixing plate 41 and the gasket 42, so as to prevent the anti-cannon curtain from falling off or slipping. Check whether there is any looseness at the clamping point, and confirm that all the gaskets 42 are correctly in place and do not affect the clamping force and the deployment of the anti-cannon curtain.

[0063] When the anti-ballistic missile curtain 4 is opened and closed along the support rail via a motor and pulley system, the fixing plate 41 and the gasket 42 move with the anti-ballistic missile curtain, always maintaining stable clamping. If the anti-ballistic missile curtain needs to be retracted, the pulley block is directly driven by the motor to slide, and no additional operation is required at the clamping part. When the anti-ballistic missile curtain needs to be replaced or repaired, first loosen the fastening bolt 32 of the mounting clip 3, remove the elastic plate, remove the fixing plate 41 and the gasket 42. After disassembly, check the integrity of the fixing plate 41 and the gasket 42. If the fixing plate 41 is deformed or damaged, replace it in time. If the gasket 42 is aged, broken or compressed, it should also be replaced with a new gasket. When installing a new anti-ballistic missile curtain, repeat the above assembly and fastening steps to ensure that the installation is secure. During the opening and closing of the anti-ballistic missile curtain or daily maintenance, regularly check the integrity of the gasket 42 to prevent the gasket from failing due to long-term friction or environmental influence.

[0064] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the scope defined by the structure of the invention, and all such modifications and additions should fall within the protection scope of the present invention.

Claims

1. A device for installing and driving a protective blasting curtain for tunnel blasting, comprising a support rail (1) and a protective blasting curtain (4), wherein the protective blasting curtain (4) is suspended on the support rail (1), characterized in that: The anti-gun curtain (4) is slidably installed along the support rail (1). The top of the anti-gun curtain (4) is connected and fixed to the pulley (2). The pulley (2) is slidably installed along the support rail (1). An installation clip (3) is installed below the pulley (2). The anti-gun curtain (4) is clamped and installed on the installation clip (3).

2. The installation and driving device for a protective blasting curtain for tunnel blasting according to claim 1, characterized in that: The support rail (1) is equipped with telescopic frames (11) at both ends, and is fixed at the tunnel entrance by the telescopic frames (11). The telescopic frames (11) are equipped with mounting rods (12), and the telescopic frames (11) are fixed at the side wall at the tunnel entrance by the mounting rods (12).

3. The installation and driving device for a protective blasting curtain for tunnel blasting according to claim 2, characterized in that: The telescopic frame (11) at one end of the support rail (1) is divided into two groups, upper and lower, and its telescopic movement is controlled separately. The front end of the telescopic frame (11) is provided with a top plate (111), and the top plate (111) has an installation hole. The telescopic frame (11) is connected to an adjusting screw (112). The telescopic frame (11) is slidably installed on the support rail (1) by the adjusting screw (112). The telescopic frame (11) and the support rail (1) are connected and fixed by fixing bolts (113).

4. The installation and driving device for a protective blasting curtain for tunnel blasting according to claim 2, characterized in that: An expansion head (121) is provided at the end of the mounting rod (12). The expansion head (121) is connected to an adjusting screw (122), and the expansion head (121) is expanded by adjusting the screw (122).

5. The installation and driving device for a protective blasting curtain for tunnel blasting according to claim 1, characterized in that: The support rail (1) is an I-beam structure. The pulleys (2) are installed on both sides of the support rail (1) and the pulleys (2) on both sides of the support rail (1) are connected and combined through the wheel frame (21). The pulleys (2) are connected and installed on the wheel frame (21) through the wheel bearing (211).

6. A protective blasting curtain installation and driving device for tunnel blasting according to claim 1 or 5, characterized in that: The pulley (2) is connected to a motor (22), and the motor (22) is connected to an external power source.

7. A protective curtain installation and driving device for tunnel blasting according to claim 1 or 5, characterized in that: A locking clip (23) is movably mounted on the support rail (1). The locking clip (23) is connected to a control motor (231). The locking clip (23) is oscillating and installed by the control motor (231).

8. The installation and driving device for a protective blasting curtain for tunnel blasting according to claim 5, characterized in that: The mounting clip (3) is fixedly installed in the insertion slot (311) at the bottom of the wheel frame (21) by the insertion block (31).

9. A protective blasting curtain installation and driving device for tunnel blasting according to claim 1 or 8, characterized in that: The bottom of the mounting clip (3) consists of two parallel elastic plates. The two elastic plates of the mounting clip (3) have through holes at corresponding positions. Fastening bolts (32) are inserted into the through holes of the mounting clip (3).

10. The installation and driving device for a protective blasting curtain for tunnel blasting according to claim 1, characterized in that: The top of the anti-ballistic curtain (4) is provided with a fixing plate (41), and the anti-ballistic curtain (4) is installed on the mounting clip (3) through the fixing plate (41). A gasket (42) is provided in the installation gap between the fixing plate (41) and the mounting clip (3).

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