Adjustable double-layer windproof fence with variable wind permeability

Abstract

The utility model discloses an adjustable wind -permeable coefficient double -deck windproof fence relates to highway wind -proof technical field, aims at solving the problem that the existing wind -proof facilities are vulnerable to the electrification assembly, and the wind -permeable adjustment is poor, and the wind -resisting stability is weak. It includes base and wind -proof mechanism, and the wind -proof mechanism includes the column of interval and the double -deck wind -proof assembly along the column arrangement, and the wind -proof assembly is through the connecting piece and the column rotation cooperation, and realizes angle adjustment by locking piece, and the spacing adjustable combination component forms " spacing + angle " two -dimensional mechanical regulation, and the accurate adaptation different wind level wind -permeable demand. Set up double -screw rod connecting mechanism and adjust the column spacing, the cable-stayed cable and the composite anchoring reinforcement mechanism enhance the resistance to overturning, and the arc positioning plate positioning mechanism prevents the thread loosening. The whole course has no electrification component, and the cost reduces 40% to 60%, and the maintenance frequency reduces to every quarter 1, and the resistance to overturning risk reduces more than 60%, and adapts to the highway strong wind area all scene.

Description

Technical Field

[0001] This utility model relates to the field of highway windproof technology, and in particular to a double-layer windproof fence with adjustable wind permeability coefficient. Background Technology

[0002] A section of a certain highway is frequently affected by strong winds, which has repeatedly caused safety and operational problems: strong winds can easily cause vehicles to overturn or roll over, endangering the safety of drivers and passengers; extreme winds necessitate temporary closure of the highway, disrupting traffic; embankment slopes suffer wind erosion, bridges and traffic facilities are damaged by wind, and some leeward road cuts are even buried by sand due to wind deposition. These problems not only cause economic losses such as vehicle repairs and logistics delays, but also seriously affect traffic efficiency and public travel safety. Therefore, it is necessary to install professional windproof facilities in sections prone to strong winds.

[0003] To address the aforementioned needs, a novel double-layer wind barrier suitable for windy and sandy environments has been disclosed in the prior art (patent number: CN112359735A). This wind barrier employs a double-layer windproof structure of "louver type + perforated grid type," with the louver type blades adjusted for angle via a dual-axis motor and sprocket chain. It is equipped with a wind speed sensor and control device for intelligent adaptive regulation, powered by a solar panel. A cleaning device is added to prevent sand and dust from clogging the perforated grid, and a baffle device enhances the windproof effect. Theoretically, it can adapt to the windproof requirements of windy and sandy environments, balancing equipment self-maintenance and windproof performance.

[0004] However, this double-layer wind barrier has significant limitations in practical applications and cannot fully meet the long-term operational needs of the high-wind sections of the Lianyungang-Huoerguosi Expressway. Firstly, the overall use and maintenance costs are relatively high. The electrical equipment it relies on, such as the dual-axis motor and wind speed sensor, is prone to component damage in harsh environments with alternating strong winds and sandstorms (such as sand entering the motor or sensor malfunction), requiring frequent repairs and replacements, which significantly increases the later maintenance costs. Secondly, the ventilation coefficient adjustment function is limited. Although a louver-type blade angle adjustment structure is designed, the perforated grid structure, one of the core windproof layers, is a fixed shape. Its ventilation coefficient cannot be dynamically adjusted according to actual wind conditions (such as light, medium, and strong winds). The fixed porosity of the perforated grid determines the upper and lower limits of the overall ventilation coefficient, which means that the louver blade adjustment can only fine-tune the airflow and cannot adapt to the balance requirements of "windproof effect" and "structural stress" under different wind levels (such as a higher ventilation rate to relieve stress in strong winds and a lower ventilation rate to block wind in light winds), weakening the wind barrier's adaptability to different scenarios. Utility Model Content

[0005] To address the problems of high cost (reliance on easily damaged and frequently repaired electrified components) and poor ventilation regulation (fixed perforated grids are difficult to adapt to wind conditions and terrain) of existing windproof facilities, this utility model proposes a double-layer windproof grid with adjustable ventilation coefficient. This utility model abandons electrification design and uses a fully mechanical structure to achieve dynamic adjustment of ventilation rate, which can adapt to different wind levels and terrains, reducing maintenance costs and improving windproof performance, providing a better solution for windproofing highways in strong wind areas.

[0006] The adjustable windproof double-layer windproof grid includes a base and a windproof mechanism set on the top of the base. The windproof mechanism is supported by two columns arranged at intervals along a preset protection direction (such as perpendicular to the prevailing wind direction). Double-layer windproof components (two layers above and below or two layers in front and behind, depending on the protection requirements) are arranged sequentially along the length of the columns. The spacing between adjacent windproof components is adjustable, and each windproof component rotates with the column to form a windproof structural foundation that is adjustable in two dimensions: spacing and angle.

[0007] Each windproof component includes a connector, a corrugated guardrail panel, and a locking component: the connector is rotatably fitted around the outer ring of the post and can rotate circumferentially around the post's axis; the corrugated guardrail panel is fixed to the outside of the connector and rotates synchronously with the connector to change the windward angle; the locking component is assembled on the connector and has two states: locked and unlocked. When locked, it fixes the relative position of the connector and the post, ensuring the stability of the corrugated guardrail panel's angle; when unlocked, it allows the connector to rotate, enabling flexible adjustment of the guardrail panel's angle, thereby precisely controlling the windproof barrier's permeability coefficient (e.g., when the windward angle increases, the permeability coefficient decreases, enhancing the windproof effect; when the angle decreases, the permeability coefficient increases, improving the ventilation effect). Specifically, in the locked state, the locking component locks the relative position of the connector and the post to fix the angle of the corrugated guardrail panel; in the unlocked state, the locking component releases the lock on the connector and the post, allowing the connector to rotate around the post to adjust the angle of the corrugated guardrail panel.

[0008] To prevent rigid wear between the connector and the post and extend its service life, a rubber sleeve is fitted inside the connector. The inner side of the rubber sleeve fits tightly against the outer side of the post, which can buffer the contact stress when the connector rotates. At the same time, a pad is set on the inner side of the corrugated guardrail plate at the position corresponding to the locking part. The locking part passes through the pad and the corrugated guardrail plate in sequence and is fixed to the connector. The pad can disperse the local compression stress when the locking part is locked and prevent the corrugated guardrail plate from deforming due to concentrated force.

[0009] To accommodate protection areas of varying widths, a connecting mechanism is provided to connect two uprights and adjust their spacing. This connecting mechanism includes a connecting component and an adjusting component. Two connecting components are provided, each corresponding to and fixedly connected to one of the two uprights. The two ends of the adjusting component are rotatably connected to the two connecting components. Rotating the adjusting component changes its length, thereby driving the two uprights to move closer to or further away from each other at the top of the base, thus adjusting the distance between the two uprights. Specifically, the adjusting component includes a double-threaded rod, with both ends threadedly engaged with the two connecting components, and the threads at both ends of the double-threaded rod are in opposite directions. Conversely, it also includes an operating part, fixedly connected to the middle of the double-helix threaded rod, for providing rotational driving force; the connecting assembly includes threaded tubes, two of which are provided, one end of each threaded tube is adapted to the two ends of the double-helix threaded rod with threaded engagement, and the threads at both ends are in opposite directions, and the other end is fixedly connected to the two columns one by one; the operating part (such as a torsion plate or handle) is fixedly connected to the middle of the double-helix threaded rod, rotating the operating part can drive the double-helix threaded rod to rotate around its own axis, and through the thread transmission of opposite directions, drive the two threaded tubes to move synchronously in opposite directions, thereby driving the two columns to move closer or further apart, realizing convenient adjustment of the column spacing, which can adapt to different protection width requirements without disassembly and reassembly.

[0010] To enhance the anti-overturning ability of the columns in strong winds, a reinforcement component is installed to provide diagonal tensile support to the columns. The reinforcement component includes a rotating component and a stay cable. The rotating component is rotatably connected to the top of any column and can rotate circumferentially around the column axis (adapting to changes in wind direction and avoiding additional torque on the stay cable due to wind direction deviation). One end of the stay cable is fixed to the rotating component, and the other end is fixed to the ground through an anchoring structure, forming a diagonal tensile force on the column, effectively dispersing the wind load on the column and reducing the risk of the column overturning.

[0011] The anchoring structure adopts an integrated design of "anchor rod-clamp rod-cast cement": one end of the cable anchor rod is fixedly connected to the end of the stay cable away from the rotating part, and the other end is fixedly connected to the clamp rod to form an integrated load-bearing structure; the cast cement is buried at a preset depth underground (set according to geological conditions, such as ≥1.5m for soft soil foundation and ≥0.8m for hard foundation). The lower section of the cable anchor rod and the clamp rod are integrally embedded in the cast cement. Through the gripping force and friction between the cast cement and the underground soil, the tension of the stay cable is stably transmitted to the underground soil, ensuring reliable anchoring effect.

[0012] To address the issue of loosening in the threaded connection between the column and the base, a positioning mechanism is installed for anti-loosening reinforcement: the bottom of the column and the top of the base are connected by a threaded pair. The positioning mechanism includes a drive component, a positioning component, and a limiting component. The fixed part of the drive component is fixed to the base, and the power output end is connected to the positioning component for transmission. One end of the limiting component is fixed to the column, and the other end slides with the positioning component, restricting the movement trajectory of the positioning component. The drive component can drive the positioning component to move along the limiting trajectory until the positioning component covers and abuts the threaded connection. This mechanically blocks external foreign objects such as sand and rainwater from entering the threaded pair, and also restricts the relative rotation of the threaded pair by abutting and limiting, thus completely solving the problem of thread loosening caused by wind vibration.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model adopts a dual-dimensional mechanical adjustment design of "spacing + angle". The spacing of the windproof components can be adjusted along the length of the column. The corrugated guardrail plate rotates with the column through the connector and the locking part realizes the angle locking / unlocking. The ventilation rate can be precisely adjusted according to light wind, medium wind and strong wind, taking into account the needs of wind resistance and ventilation. Moreover, there are no electric components such as motors and sensors throughout the process, which completely avoids the risk of component damage in harsh environments and is suitable for all scenarios in the strong wind area of ​​the highway.

[0014] This utility model uses discarded corrugated guardrail panels from highway reconstruction / expansion / demolition as core components, solving the dilemma of "discarded or low-grade reuse", reducing raw material costs by 40%-60%; at the same time, the all-mechanical structure with rubber sleeves to prevent wear and pads to prevent deformation significantly reduces component wear, reducing maintenance frequency from the current 1-2 times per month to once per quarter, reducing the total life cycle maintenance cost by more than 50%, combining economy and environmental protection.

[0015] This utility model forms an oblique tensile support through a reinforcement component (rotating part + inclined cable + anchoring structure). The integrated design of the anchoring structure, which combines "anchor rod - clamp rod - poured cement", ensures stable force transmission and reduces the risk of column overturning by more than 60%. The positioning mechanism drives the positioning component to abut against the threaded part, which not only prevents foreign object corrosion but also limits thread loosening. This dual protection ensures that the windproof fence can still operate stably in strong winds of 25m / s, thus guaranteeing the safety of highway operation.

[0016] The column spacing adjustment of this utility model only requires turning the double-rotating threaded rod operating part and adjusting the ventilation angle to unlock the locking part. The connection mechanism can be disassembled and installed by simply turning the nut twice. It can be completed by a single person without professional equipment within 10 minutes. Moreover, the modular design allows for individual replacement of damaged parts without the need for complete disassembly, reducing the duration of temporary road closures and facilitating on-site implementation and maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the adjustable ventilation coefficient double-layer windproof grid of this utility model; Figure 2 This is a partial structural cross-sectional view of the connection between the column and the base of this utility model; Figure 3 This is a partial structural schematic diagram of the windproof mechanism of this utility model; Figure 4 This is a partial structural cross-sectional view of the reinforcement component of this utility model; Figure 5 This is an exploded view of part of the structure of the windproof component of this utility model; Figure 6 This is an exploded view of part of the positioning mechanism of this utility model; Figure 7 This is an exploded view of part of the connecting mechanism of this utility model; Figure 8 This is a partial structural schematic diagram of the connecting mechanism of this utility model.

[0018] In the diagram: 1. Windproof mechanism; 11. Column assembly; 1101. Standard section column; 1102. Panel; 1103. Reinforcing fin; 1104. Mounting bolt; 12. Reinforcing assembly; 1201. Turning block; 1202. Connecting arm; 1203. Cable stay; 1204. Cable anchor; 1205. Cement pouring; 1206. Bracket; 13. Windproof assembly; 1301. Corrugated guardrail; 1302. Clamp; 1303. Rubber sleeve; 1304. Pad; 1305. Fixing bolt; 1306. Nut; 2. Positioning mechanism; 21. Drive assembly; 2101. Frame plate; 2102. Threaded cylinder; 2103. Screw 2104. Twist disc one; 22. Positioning assembly; 2201. Connecting block; 2202. Positioning plate; 2203. Sleeve; 2204. Connecting bolt; 2205. Fixing screw; 23. Limiting assembly; 2301. Protruding rod; 2302. Limiting piece; 2303. Slide cylinder; 2304. Fixing block; 3. Connecting mechanism; 31. Connecting assembly; 3101. Protruding bracket; 3102. Mounting plate; 3103. Threaded screw; 3104. Nut two; 32. Adjusting assembly; 3201. Protruding plate; 3202. Threaded pipe; 3203. Double-rotating threaded rod; 3204. Twist disc two; 4. Base; 41. Seamless steel pipe pile. Detailed Implementation

[0019] The following will refer to the accompanying drawings of the embodiments of this utility model ( Figures 1 to 8 This document provides a clear and complete description of the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] It should be noted that the material selection and dimensional parameters of all components in this embodiment are based on the typical working conditions of highways in strong wind areas (such as the Xinjiang and Gansu sections of the Lianyungang-Horgos Expressway), and refer to the load requirements in the "Design Specification for Highway Traffic Safety Facilities" (JTGD81-2017) and the "Design Guidelines for Highway Windbreaks" (Trial) to ensure that the structural strength and wind resistance performance are compatible. At the same time, all mechanical connection methods (welding, threaded fit, etc.) comply with the "Code for Welding of Steel Structures" (GB50661-2011) and the "Calculation and Selection of Ordinary Threaded Connections" (GB / T3098.1-2010) to ensure the reliability of the connection.

[0021] Example 1 Combination Figures 1 to 5 An adjustable ventilation coefficient windproof grid includes a base 4, with a seamless steel pipe pile 41 fixedly connected to the bottom of the base 4, a windproof mechanism 1 set on the top of the base 4, a positioning mechanism 2 set on the outside of the windproof mechanism 1 on the top of the base 4, and a connecting mechanism 3 set on the inside of the windproof mechanism 1.

[0022] The windproof mechanism 1 includes a column assembly 11, a reinforcement assembly 12, and a windproof assembly 13. The column assembly 11 is located on the top of the base 4, the reinforcement assembly 12 is located on the top of the column assembly 11, and the windproof assembly 13 is located on the outer ring of the column assembly 11.

[0023] The column assembly 11 includes a standard column section 1101, which is located on the top of the base 4. A panel 1102 is fixedly connected to the bottom of the standard column section 1101 and snaps into the top of the base 4. A reinforcing fin 1103 is fixedly connected to the top of the panel 1102 and is fixedly connected to the outer ring of the standard column section 1101. A mounting bolt 1104 is threaded into the top of the panel 1102 and threaded into the top of the base 4. The reinforcement assembly 12 includes a rotating block 1201, which is rotatably connected to the top of the left standard column section 1101. A connecting arm 1202 is fixedly connected to the top of the rotating block 1201. A stay cable 1203 is fixedly connected to the left side of the connecting arm 1202. A cable anchor 1204 is fixedly connected to the bottom of the stay cable 1203 and a pouring rod is fixedly connected to the outside of the cable anchor 1204. Concrete 1205 is poured, and a clamp 1206 is fixedly connected to the bottom of the cable anchor 1204. The clamp 1206 is fixedly connected to the bottom of the poured cement 1205. The windproof component 13 includes a corrugated guardrail 1301, which is set on the outside of the standard section post 1101. A clamp 1302 is set on the inside of the corrugated guardrail 1301, and the clamp 1302 is sleeved on the outer ring of the standard section post 1101. A rubber sleeve 1303 is fixedly connected to the ring. The inner side of the rubber sleeve 1303 fits against the inner side of the outer ring of the standard section post 1101. A pad 1304 is set on the outer side of the corrugated guardrail 1301 corresponding to the position of the clamp 1302. A fixing bolt 1305 is sleeved inside the pad 1304. The fixing bolt 1305 is sleeved in the corrugated guardrail 1301 and the clamp 1302. A nut 1306 is threadedly connected to the outer ring of the fixing bolt 1305.

[0024] Furthermore, when using this utility model of windbreak, the staff can adjust the position of the corrugated guardrail 1301 on the left and right sides according to their needs to adjust the overall air permeability of the windbreak, thereby maximizing the wind resistance effect of the windbreak. This allows the windbreak to be adjusted independently to adapt to different weather conditions and needs, and the operation is simple and convenient for staff to use.

[0025] Example 2 See Figure 1 , Figure 2 and Figure 6 Furthermore, based on Embodiment 1, the positioning mechanism 2 includes a driving component 21, a positioning component 22, and a limiting component 23. The driving component 21 is disposed on the top of the base 4, the positioning component 22 is disposed inside the driving component 21, and the limiting component 23 is disposed outside the positioning component 22.

[0026] Drive assembly 21 includes a frame plate 2101, which is fixedly connected to the top of the base 4, located outside the insert plate 1102. A threaded cylinder 2102 is fixedly connected to the top of the frame plate 2101. A threaded shaft 2103 is threadedly connected to the inner ring of the threaded cylinder 2102. A torsion disc 2104 is fixedly connected to the outer ring of the inner end of the threaded shaft 2103. Positioning assembly 22 includes a connecting block 2201, which is rotatably connected to the outer ring of the inner end of the threaded shaft 2103. A positioning plate 2202 is fixedly connected to the bottom of the connecting block 2201. The bottom of the positioning plate 2202 is in contact with the top of the mounting bolt 1104. The top of the positioning plate 2202 is... A sleeve 2203 is fixedly connected to the left and right sides of the connecting block 2201. A connecting bolt 2204 is sleeved on the inner ring of the sleeve 2203. A fixing screw 2205 is threaded on the outer ring of the connecting bolt 2204. The fixing screw 2205 is fixedly connected to the outside of the reinforcing fin 1103. The limiting component 23 includes a protruding rod 2301. The protruding rod 2301 is fixedly connected to the outside of the positioning plate 2202. A limiting piece 2302 is fixedly connected to the outside of the protruding rod 2301. A sliding cylinder 2303 is slidably connected to the outer ring of the protruding rod 2301. A fixing block 2304 is fixedly connected to the bottom of the sliding cylinder 2303. The fixing block 2304 is fixedly connected to the top of the base 4.

[0027] Furthermore, by simply turning the turntable 2104, the staff can move the positioning plates 2202 located at the four corners of the panel 1102 inward, so that the bottom of the positioning plate 2202 fits against the top of the installed mounting bolt 1104, thus completing the positioning process of the mounting bolt 1104. This prevents the mounting bolt 1104 from moving upward on its own after installation, increasing the stability of the mounting bolt 1104 after installation, improving the stability of the standard section column 1101, and enhancing the overall structural strength of the windbreak when in use.

[0028] Example 3 See Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 Furthermore, based on Embodiment 1 and Embodiment 2, the connecting mechanism 3 includes a connecting component 31 and an adjusting component 32. The connecting component 31 is disposed inside the column component 11, and the adjusting component 32 is disposed inside the connecting component 31.

[0029] The connecting component 31 includes a boss 3101, which is fixedly connected to the inner side of the standard section column 1101. A mounting plate 3102 is provided on the front side of the boss 3101, and a threaded screw 3103 is fixedly connected to the rear side of the mounting plate 3102. The threaded screw 3103 is engaged inside the boss 3101, and a nut 3104 is threadedly connected to the outer ring of the threaded screw 3103. The front side of the nut 3104 fits against the rear side of the boss 3101. The adjusting component 32 includes a boss 3201, which is fixedly connected to the inner side of the mounting plate 3102. A threaded tube 3202 is fixedly connected to the inner side of the boss 3201, and a double-axis threaded rod 3203 is threadedly connected to the inner ring of the threaded tube 3202. A torsion disc 3204 is fixedly connected to the middle of the outer ring of the double-axis threaded rod 3203.

[0030] Furthermore, workers only need to rotate nut 2 3104 to disassemble and assemble the threaded tube 3202 and the double-axis threaded rod 3203, making it convenient for workers to disassemble and assemble the threaded tube 3202 and the double-axis threaded rod 3203. At the same time, after the threaded tube 3202 and the double-axis threaded rod 3203 are installed, workers only need to turn the twisting disc 2 3204 to drive the threaded tubes 3202 on the left and right sides to move inward synchronously. This allows the threaded tubes 3202 on the left and right sides to be connected to the double-axis threaded rod 3203 to reinforce the standard section columns 1101 on the left and right sides, increasing the structural strength of the standard section columns 1101 on the left and right sides.

[0031] In actual operation, when this device is used, it mainly uses adjustable corrugated guardrail plates 1301, which are fixed to the outer ring of the standard section post 1101 by fixing bolts 1305, clamps 1302 and nuts 1306. Then, the strength of the overall wind-blocking surface of the device is increased by the inclined cable 1203. The vertical position of the corrugated guardrail plates 1301 on the left and right sides is adjustable. The staff can adjust the windproof coefficient of the windbreak by changing the position of the corrugated guardrail plates 1301 on the left and right sides, so as to reduce the impact of strong winds on highway driving. When it is necessary to adjust the position of the corrugated guardrail 1301 on the left and right sides, the worker first rotates nut 1306. Nut 1306 rotates inward from the fixing bolt 1305 and disengages from the fixing bolt 1305. Then the worker can move the clamp 1302 and the corrugated guardrail 1301 as a whole to move up and down. After the corrugated guardrail 1301 is moved to the appropriate position, the worker rotates nut 1306 to the fixing bolt 1305 and rotates it until both nuts 1306 can no longer be rotated. At this time, the adjustment of the position of the corrugated guardrail 1301 is completed, and the ventilation rate adjustment of the windbreak is completed. When the mounting bolt 1104 needs to be positioned after the standard section column 1101 is installed, the worker first rotates the torsion disc 2104. The rotation of the torsion disc 2104 drives the threaded shaft 2103 to rotate. The threaded shaft 2103 rotates and moves inward within the inner ring of the threaded cylinder 2102. The inward movement of the threaded shaft 2103 drives the positioning plate 2202 to move inward through the connecting block 2201. The positioning plate 2202 moves inward until it is above the mounting bolt 1104 and fits against the top of the mounting bolt 1104. Then, the worker puts the connecting bolt 2204 onto the inner ring of the sleeve 2203. After the connecting bolt 2204 contacts the fixing cylinder 2205, the worker rotates the connecting bolt 2204. At this time, the connecting bolt 2204 rotates and moves inward within the inner ring of the fixing cylinder 2205. This completes the positioning process of the mounting bolt 1104. When it is necessary to reinforce the standard section columns 1101 on the left and right sides, the workers first misalign and engage the threaded rods 3103 on the left and right sides with the brackets 3101 on the left and right sides. Then, the workers place the second nut 3104 behind the threaded rod 3103 and rotate it. The second nut 3104 rotates and moves forward with the rotation of the threaded rod 3103 until the front side of the second nut 3104 is in contact with the rear side of the bracket 3101. Then, the workers rotate the second torsion plate 3204. The rotation of the second torsion plate 3204 drives the double-axis threaded rod 3203 to rotate. The rotation of the double-axis threaded rod 3203 drives the threaded tubes 3202 on the left and right sides to move inward synchronously. At this time, the support and reinforcement treatment of the standard section columns 1101 on the left and right sides is completed.

[0032] Example 4 Combination Figures 1 to 5 As shown, this embodiment discloses the core assembly structure and assembly process of an adjustable ventilation coefficient double-layer windproof grid, specifically including the following components and operation details: The prefabrication and installation of base 4: Base 4 serves as the load-bearing foundation for the entire windbreak fence. It is cast in place using C30 commercial concrete, with a cross-sectional dimension of 600mm×600mm×300mm (length×width×height). Four sets of Φ16mm steel mesh (150mm×150mm spacing) are pre-embedded internally to enhance crack resistance. To improve the base's overturning resistance on highway shoulders (commonly silty clay or sandy soil layers), seamless steel pipe piles 41 (material Q235, outer diameter 159mm, wall thickness 6mm) are fixedly connected to its bottom. The steel pipe piles are buried 1.5-2m underground—this depth avoids the loose surface soil layer (usually 0.5-1m is the topsoil or backfill layer), ensuring that the seamless steel pipe pile 41 is bonded to the underlying stable soil layer. The vertical bearing capacity of a single seamless steel pipe pile 41 is ≥80kN, meeting the base's pull-out resistance requirements under strong winds.

[0033] Two grooves are pre-set on the top of the base 4 (the size matches the panel 1102, and the depth is 20mm) for positioning the column assembly 11; four M20 threaded holes (50mm deep) are reserved around the grooves to fit the installation bolts 1104; after the base is poured, it needs to be covered with geotextile and watered for 7 days to ensure that the concrete strength reaches more than 85% of the design value before subsequent assembly can be carried out.

[0034] The windproof mechanism 1 is assembled in layers. The windproof mechanism 1 includes a column assembly 11, a reinforcing assembly 12, and a windproof assembly 13. The assembly sequence follows the principle of "first erecting the column, then providing windproofing, and finally reinforcing," as detailed below: The column assembly 11 is based on the standard section column 1101. The selection of the column assembly 11 is based on the wind load requirements of highway wind protection facilities (refer to JT / T374-2018 "Highway Guardrails"): it adopts Φ114mm hot-dip galvanized seamless steel pipe, with a wall thickness of 5mm and a zinc coating thickness of ≥85μm (to prevent corrosion from rainwater and de-icing agents along the highway). The length of a single column is 2.5m (to match the height of the highway shoulder protection and avoid affecting the driver's vision).

[0035] A panel 1102 (material Q235, size 200mm×200mm×8mm) is welded to the bottom of the column. The edges of the panel 1102 are rounded (R5mm) to prevent scratches to operators during installation. Four reinforcing fins 1103 (size 150mm×80mm×6mm) are evenly welded to the top of the panel 1102 along the circumference of the column. The height of the weld joint between the reinforcing fins 1103 and the column and panel 1102 is ≥5mm to ensure that when the column is subjected to horizontal wind force, the reinforcing fins 1103 can disperse the contact stress between the panel 1102 and the base 4 and avoid local crushing.

[0036] During assembly, first insert the panel 1102 into the pre-set groove at the top of the base 4, then use a level to calibrate the verticality of the column (deviation ≤1‰). Next, insert the four mounting bolts 1104 (M20 high-strength bolts, grade 8.8, with Dacromet surface treatment for corrosion protection) through the pre-drilled holes in the panel and screw them into the threaded holes in the base. Tighten them with a torque wrench to a torque of 300 N•m to ensure that the column and the base 4 are securely fixed.

[0037] The windproof component 13 is the core of the ventilation and regulation system. It adopts a "double-layer arrangement" design (the upper and lower layers are 1m apart, with 3 windproof components 13 in each layer) to adapt to the differences in wind conditions in the vertical direction (near ground wind speed is about 8-12m / s, and wind speed at a height of 2.5m is about 12-15m / s). The specific components and assembly details are as follows: Corrugated guardrail panel 1301: Utilizing recycled hot-dip galvanized corrugated steel sheets from highway reconstruction, expansion, or demolition (compliant with JT / T374-2018 standard, thickness 2.5mm, wave height 40mm, wave pitch 180mm). After recycling, the surface must be cleaned (removing rust and adhering mud and sand), and the integrity of the galvanized layer must be tested (locally damaged areas must be repaired with cold-sprayed zinc coating with a zinc content ≥95%) to ensure the durability of reusable components. The ventilation adjustment principle of corrugated guardrail panel 1301 is as follows: when the wave height direction is parallel to the wind direction, the ventilation coefficient is approximately 60%-70% (primarily for ventilation); when the wave height direction is perpendicular to the wind direction, the ventilation coefficient is approximately 10%-20% (primarily for wind protection).

[0038] The connector is clamp 1302: it is made of Q235 steel plate rolled and welded, with an inner diameter of 118mm (4mm larger than the outer diameter of the column, leaving space for the installation of the rubber sleeve). Four perforated ear plates (14mm in diameter, suitable for fixing bolts) are welded on the outer circumference. The inner circumference of clamp 1302 needs to be ground smooth (roughness Ra≤6.3μm) before the rubber sleeve 1303 (nitrile rubber, Shore hardness 60±5HA, thickness 4mm, interference 0.2mm) is fitted on it. The interference design ensures that the rubber sleeve 1303 fits tightly with the column (acting as a buffer) and avoids that the clamp 1302 will be difficult to rotate due to excessive interference. An axial groove (2mm wide, 1mm deep) is opened on the inner side of the rubber sleeve 1303 to store grease (lithium-based grease, temperature resistance -20℃ to 120℃) to reduce the frictional resistance when clamp 1302 rotates.

[0039] The pad 1304 and fixing bolt 1305: The pad 1304 is made of Q235 steel plate (50mm×50mm×6mm, center hole diameter 13mm), and is placed on the inner side of the corrugated guardrail plate 1301 at the position of the perforated ear plate corresponding to the clamp, in order to disperse the local stress when the fixing bolt is tightened (to avoid cracks caused by stress concentration at the perforation of the corrugated plate); the fixing bolt is an M12×30mm stainless steel bolt (304 material, corrosion resistant), and a matching nut 1306 (nylon lock nut, to prevent loosening due to vibration).

[0040] Assembly steps: First, fit the clamp 1302 with the rubber sleeve 1303 onto the post and adjust it to the preset height (0.5m from the base for the lower component and 1.5m from the base for the upper component). Then, attach the corrugated guardrail plate 1301 to the perforated ear plate of the clamp, insert the pad and fixing bolt, tighten the nut 1306 by hand, and then tighten it with a torque wrench to a torque of 25 N•m. If the angle needs to be adjusted, simply loosen the nut 1306 to a torque ≤ 5 N•m, then rotate the clamp 1302 to change the windward angle of the corrugated guardrail plate 1301. After adjustment, tighten it again.

[0041] The reinforcement component 12 is assembled to enhance the wind resistance stability of the column, making it suitable for strong wind conditions with wind speeds of 15-25 m / s. Specific components and assembly details are as follows: The rotating component is swivel block 1201: it adopts a deep groove ball bearing (inner diameter 30mm, outer diameter 62mm), the inner ring is interference-fitted with the top of the left standard section column 1101 (50mm from the top of the column), and the outer ring is welded with connecting arm 1202 (L-shaped Q235 steel plate, size 150mm×100mm×8mm). The interference between the inner ring of the bearing and the column is 0.015-0.025mm, ensuring that swivel block 1201 can rotate 360° around the column axis (to adapt to changes in wind direction and avoid breakage of the cable due to torque accumulation).

[0042] Cable 1203: 1×19 galvanized steel strand (diameter 10mm, breaking strength ≥100kN, zinc coating weight ≥160g / m) is selected. 2 One end of the cable 1203 is fixed to the pre-drilled hole (12mm diameter) of the connecting arm 1202 by a stainless steel rigging clamp (model JGJ16-2004, 3 in a set). The tightening torque of the rigging clamp is 50 N•m to ensure that the cable 1203 is reliably fixed to the connecting arm 1202. The other end of the cable 1203 is fixed to the top ring eye (20mm diameter) of the cable anchor rod 1204 (Φ18mm solid round steel, material 45 steel, hardness HRC28-32 after heat treatment, length 1.8m) in the same way.

[0043] Anchoring structure: First, excavate a 300mm diameter, 1.2m deep circular hole on the outer side of the road shoulder (1.5m from the base). Lay a 100mm thick layer of graded sand and gravel (5-20mm particle size) at the bottom of the circular hole and compact it. Place the clamp rod 1206 (cross-shaped Q235 steel plate, size 200mm×200mm×8mm) welded to the bottom of the cable anchor rod 1204 into the circular hole, ensuring that the verticality deviation of the cable anchor rod 1204 is ≤2°. Then pour cement 1205 (C30 concrete, with 5% high-efficiency water-reducing agent added to ensure fluidity). During the pouring process, it is necessary to vibrate and compact it (using a Φ50mm vibrator, vibration time 30s) to avoid honeycomb surface defects. After the concrete has cured for 7 days, tension the cable 1203 to a pre-tension of 15kN (monitored with a tension gauge) to keep the cable 1203 in a taut state, forming an oblique tension support for the column.

[0044] For the anti-loosening assembly of positioning mechanism 2, please refer to... Figure 1 , Figure 2 and Figure 6 The positioning mechanism 2 is used to solve the problem of loose threads connecting the column and the base 4 (a common risk of vibration-induced loosening in areas with strong winds on highways). Its structural design needs to balance anti-loosening reliability and ease of operation. The specific components and assembly details are as follows: The selection and adaptation of components for positioning mechanism 2: Positioning mechanism 2 includes drive component 21, positioning component 22, and limiting component 23. The selection of each component is precisely adapted to the dimensions of the column and base 4. Drive assembly 21 includes: a frame plate 2101, which is made of Q235 steel plate (150mm×100mm×8mm), welded to the top of the base 4 and located outside the panel 1102 (30mm from the edge of the panel), the weld is a fillet weld with a height of 6mm, to ensure that the frame plate 2101 can withstand the axial force of the threaded shaft (≤5kN). Threaded cylinder 2102: Made of Q235 seamless steel pipe (outer diameter 24mm, inner diameter 16mm), with M16×2mm internal thread (accuracy 6H) machined on the inner wall, and welded to the top of the frame plate 2101 (the verticality of the threaded cylinder needs to be calibrated before welding, and the deviation ≤0.5°). Threaded shaft 2103: Made of 45 steel (M16×2mm external thread, precision 6g, length 120mm), one end is machined with a hexagonal head (dimension across flats 24mm), and the other end is machined with a stepped shaft (diameter 10mm, length 15mm) for rotational engagement with connecting block 2201; Twist plate 12104: Made of Q235 steel plate (50mm in diameter, 8mm in thickness), with a hexagonal hole in the center (to fit the hexagonal head of the threaded shaft), and anti-slip texture (annular grooves with a spacing of 2mm) machined on the outer periphery to prevent slipping when operating outdoors with gloves on.

[0045] The positioning component 22 includes: a connecting block 2201, which is made of Q235 steel (30mm×30mm×20mm) with a Φ10.5mm hole in the center. A copper sleeve (H62 brass, 10mm inner diameter, 10.5mm outer diameter) is press-fitted into the hole. The copper sleeve is clearance-fitted with the stepped shaft of the threaded shaft 2103 (clearance 0.02-0.04mm) to ensure that the connecting block 2201 can rotate flexibly around the stepped shaft and prevent the positioning plate from twisting when the threaded shaft rotates. Positioning plate 2202: Made of Q235 steel plate (arc-shaped, the curvature matches the outer circumference of mounting bolt 1104, inner diameter 20mm, width 30mm, thickness 6mm), with two sleeves 2203 (U-shaped Q235 steel plate, size 40mm×20mm×6mm, center hole diameter 11mm) welded on the top. The sleeves 2203 are used to pass through the connecting bolts 2204 (M10×30mm stainless steel bolts, 304 material). Fixed screw 2205: Made of Q235 steel pipe (outer diameter 14mm, inner diameter 10mm), with M10×1.5mm internal thread (precision 6H) machined on the inner wall, and welded to the outside of the reinforcing fin 1103 (50mm from the top of the insert 1102), and precisely aligned with the position of the sleeve 2203 (coaxiality deviation ≤1mm).

[0046] The limiting component 23 includes: a protruding rod 2301, which is made of Φ8mm round steel (material Q235, length 80mm), one end of which is welded to the outside of the positioning plate 2202 (10mm from the edge of the positioning plate), and the other end is welded to a limiting piece 2302 (round Q235 steel plate, diameter 12mm, thickness 3mm). The limiting piece 2302 is used to prevent the protruding rod 2301 from coming out of the slide cylinder 2303. Slide cylinder 2303: Made of Φ10mm seamless steel pipe (material Q235, length 60mm), with chrome plating on the inner wall (thickness 0.01-0.02mm, roughness Ra≤0.8μm) to reduce sliding friction with the protruding rod 2301; a fixing block 2304 (Q235 steel block, size 30mm×30mm×10mm) is welded to the bottom of slide cylinder 2303. The fixing block 2304 is fixed to the top of the base 4 by expansion bolts (M8×60mm) to ensure that the position of slide cylinder 2303 is fixed.

[0047] The operation procedure and anti-loosening effect of positioning mechanism 2: The assembly of positioning mechanism 2 must be carried out after the column assembly 11 is installed. The specific operation steps and precautions are as follows: Pre-assembly inspection: First, clean the threaded surfaces of the threaded cylinder 2102 and the threaded shaft 2103 (remove oil and impurities), apply a small amount of solid lubricant (molybdenum disulfide grease, temperature resistant from -40℃ to 300℃) to the threaded surfaces to ensure smooth thread rotation; check the clearance between the protrusion of the limit component 23 and the slide cylinder, push the positioning plate 2202 to ensure that it can move smoothly along the axis of the slide cylinder (without jamming).

[0048] Anti-loosening positioning operation: The operator turns the dial 2104 clockwise, driving the threaded shaft 2103 to move inward along the axial direction of the threaded cylinder 2102 (feed speed of about 2mm / turn). The threaded shaft 2103 drives the positioning plate 2202 to move synchronously through the connecting block 2201. At this time, the protruding rod 2301 slides along the inner wall of the slide cylinder 2303, restricting the movement trajectory of the positioning plate 2202 (moving only along the axial direction, without radial offset). Continue to twist the twisting disc 2104 until the bottom of the positioning plate 2202 is tightly fitted with the top of the mounting bolt 1104 (the contact area of ​​the contact surface is ≥80%). At this point, stop twisting the twisting disc 2104 and push the positioning plate 2202 by hand to confirm that there is no looseness. The mounting bolt 1104 is the core component for the threaded connection between the column and the base 4. The positioning plate 2202 fitting against the mounting bolt 1104 indirectly covers the threaded connection.

[0049] Insert the connecting bolt 2204 through the reserved hole of the sleeve 2203, align it with the internal thread of the fixing screw 2205, tighten it by hand, and then use a torque wrench to lock it with a torque of 20-25 N•m to ensure that the positioning plate 2202 and the reinforcing fin 1103 are reliably fixed.

[0050] Verification of anti-loosening effect: After positioning, a vibration test was conducted (simulating strong wind vibration on a highway, frequency 10-50Hz, amplitude 0.5mm, lasting for 2 hours). After the test, the torque attenuation rate of the mounting bolt 1104 was checked. In this embodiment, the torque attenuation rate was ≤5% (far lower than the 30%-50% without anti-loosening mechanism), and the positioning plate was always in contact with the top of the mounting bolt 1104 without any signs of loosening, effectively solving the problem of thread loosening caused by wind vibration.

[0051] For the spacing adjustment and reinforcement of connecting mechanism 3, please refer to [reference needed]. Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 The connecting mechanism 3 is used to adjust the distance between the two posts (to adapt to highway protection areas of different widths), and at the same time forms a lateral tie reinforcement. The specific components and assembly details are as follows: The component selection and adaptation logic of the connecting mechanism 3: The connecting mechanism 3 includes a connecting component 31 and an adjusting component 32, designed to adapt to a column spacing adjustment range of 500-2000mm (covering the shoulder protection width requirements of 3.75m for single-lane highways and 7.5m for dual-lane highways). Specific component selection is as follows: Connecting component 31 includes a boss 3101, which is welded from Q235 steel plate (U-shaped, opening width 18mm, height 50mm, thickness 8mm), and welded to the inside of the standard section column 1101 (1m from the top of the base 4, the bosses 3101 of the two columns are at the same height). Before welding, the surface of the column needs to be ground to remove rust (exposing the metallic luster). The weld height is 6mm to ensure that the boss 3101 can withstand the lateral tensile force (≤10kN). The inside of the boss 3101 has a pre-set slot (width 17mm, depth 20mm). The slot size is 1mm larger than the diameter of the threaded screw 3103 to facilitate screw engagement and prevent shaking. Mounting plate 3102: Made of Q235 steel plate (100mm×80mm×8mm), with threaded screw 3103 (M16×50mm, material 45 steel, grade 8.8, galvanized surface) welded to the rear side. The weld between the threaded screw 3103 and the mounting plate 3102 is a circumferential weld with a height of 5mm to ensure connection strength. Nut 2 3104: Uses an M16 hex nut (8.8 grade, Dacromet surface treatment) and a matching spring washer (Q235 material, 2mm thickness) to prevent the threaded screw 3103 from loosening when connected to the bracket 3101.

[0052] Adjustment component 32 includes a convex plate 3201, which is made of Q235 steel plate (size 80mm×60mm×8mm) and welded to the inner side (center position) of mounting plate 3102 with a weld height of 5mm; a threaded tube 3202 is welded to the inner side of the convex plate 3201, made of 45 steel, with an inner diameter of 20mm and a length of 100mm, and an M20×2mm internal thread machined on the inner wall, with the threads at both ends in opposite directions (the threaded tube on the left is right-handed and the threaded tube on the right is left-handed), and the thread accuracy is 6H to ensure smooth cooperation with the double-direction threaded rod 3203; Double-threaded rod 3203: Made of 45 steel (diameter 20mm, length 1800mm, 300mm threaded section at each end, 1200mm smooth section in the middle), the threaded sections are opposite in direction (right-handed on the left, left-handed on the right, accuracy 6g), the smooth section is chrome-plated (thickness 0.01-0.02mm) to reduce friction during rotation; Twist plate 2 3204: Made of Q235 steel plate (strip shape, length 150mm, width 30mm, thickness 10mm), with a Φ20mm hole in the middle, which is interference-fitted with the smooth section of the double-threaded rod 3203 (interference amount 0.01-0.02mm) and fixed by welding (weld seam height 5mm). The two ends of twist plate 2 3204 are machined with anti-slip texture (depth 1mm, spacing 3mm) to facilitate single-person operation.

[0053] The operation process and adjustment effect of the connecting mechanism 3 are as follows: The assembly of the connecting mechanism 3 needs to be carried out after the column assembly 11 and the positioning mechanism 2 are installed. The specific operation steps and applicable scenarios are as follows: Pre-assembly preparation: Determine the column spacing according to the width of the road shoulder protection (e.g., 1200mm for single-vehicle road shoulder protection, 1800mm for double-lane road shoulder protection), clean the impurities in the slot of the bracket 3101, and apply a small amount of lithium-based grease to the thread surface of the threaded screw 3103 and the double-helix threaded rod 3203 to ensure smooth adjustment.

[0054] Assembly of connecting components: Insert the threaded screw 3103 on the rear side of the mounting plate 3102 into the preset slot of the protrusion 3101, ensuring that the threaded screw 3103 fits tightly with the slot; Spring washers and nuts 3104 are sequentially fitted on the outside of the threaded screw 3103. After tightening nuts 3104 by hand, use a torque wrench to tighten them to a torque of 200 N•m to ensure that the mounting plate and the bracket are securely fixed without relative wobbling.

[0055] Spacing adjustment operation: If it is necessary to reduce the column spacing (e.g., from 1800mm to 1200mm), the operator turns the dial 3204 clockwise to drive the double-rotating threaded rod 3203 to rotate around its own axis (about 10 revolutions / minute). Because the threads at both ends of the threaded rod rotate in opposite directions, the left threaded tube 3202 (right-handed) moves to the right along the threaded rod, and the right threaded tube 3202 (left-handed) moves to the left along the threaded rod, causing the two columns to move closer to each other synchronously. During the adjustment process, the column spacing needs to be measured in real time with a tape measure until the preset value is reached. If you need to increase the column spacing (e.g., from 1200mm to 1800mm), simply turn dial 3204 counterclockwise. The adjustment principle is the same as above. After adjustment, the thread self-locking characteristics of the double-threaded rod 3203 and the threaded tube 3202 (thread helix angle ≤ 3°, meeting the self-locking condition) can maintain a stable spacing without additional fixing. At the same time, the connecting mechanism forms a lateral tie, which increases the crosswind stiffness of the two columns by more than 50%.

[0056] Adaptation scenario description: The spacing adjustment range of this embodiment is 500-2000mm, which can cover the following highway scenarios: For single-lane rural roads (shoulder width 0.5-1m): adjust the spacing to 500-800mm; Provincial highways with two lanes (shoulder width 1-1.5m): Adjust the spacing to 1000-1500mm; For highways with two-way four lanes (shoulder width 1.5-2m): adjust the spacing to 1500-2000mm; For wider applications (such as a two-way six-lane road), a longer dual-threaded rod (such as 2500mm in length) can be used to demonstrate the scalability of the solution.

[0057] Actual operating procedures and maintenance precautions: Ventilation coefficient adjustment (routine maintenance). When a weather station along the highway detects a change in wind speed (such as light wind turning into strong wind) and the ventilation coefficient needs to be adjusted, the operating steps are as follows: The operator arrived at the site with a torque wrench (equipped with a 12mm socket), gloves, and a rag. He first used the rag to clean the sand and dust from the surface of the fixing bolts 1305 and nuts 1306. Loosen nut 1306 counterclockwise with a torque wrench until the torque drops to 5 N•m (do not completely unscrew it to avoid losing parts). Adjust the angle of the 1301 wave-shaped guardrail according to wind speed requirements: When the wind speed is ≤8m / s (light wind), align the wave height of the guardrail with the wind direction (ventilation coefficient 60%-70%); when the wind speed is <8m / s and ≤15m / s (moderate wind), adjust the angle to 45° (ventilation coefficient 30%-40%); when the wind speed is >15m / s (strong wind), adjust the angle to 90° (ventilation coefficient 10%-20%). After adjustment, tighten nut 1306 clockwise with a torque wrench to lock it with a torque of 25 N•m, and shake the guardrail by hand to confirm that it is not loose. Record adjustment time, wind speed, and angle parameters to create an operation and maintenance log for easy traceability later.

[0058] Regular maintenance (once a quarter): To ensure the long-term stable operation of the windbreak, a comprehensive maintenance should be carried out once a quarter, focusing on the following: Windbreak component 13: Check whether the corrugated guardrail is deformed, whether the galvanized layer is damaged, and whether the rubber sleeve is aged (if cracks appear or the hardness change is >10HA, it needs to be replaced). Positioning mechanism 2: Check the fit between the positioning plate and the mounting bolts. If there is a gap, turn the twisting disc 2104 again and tighten the connecting bolts. Connecting mechanism 3: Check whether the double-threaded rod 3203 is corroded. If it is corroded, clean it and apply grease. Check whether the second nut 3104 is loose. If necessary, retighten it. Reinforcement component 12: Check the tension of the stay cables (measure with a tension gauge; if the tension is <10kN, it needs to be re-tensioned to 15kN), check for cracks in the poured cement, and repair any minor cracks with epoxy resin mortar.

[0059] Inspections following severe weather (strong winds, heavy rain): A special inspection must be conducted within 24 hours after strong winds (wind speed > 20 m / s) or heavy rain. Check the verticality of the column. If the deviation is greater than 3‰, the positioning mechanism and connecting mechanism need to be loosened, the verticality recalibrated, and then fixed. Check whether the concrete for the anchoring structure has settled or tilted. If the settlement is greater than 50mm, the concrete needs to be excavated and poured again. Check the corrugated guardrail panels for collision deformation (such as from being hit by a blown-down branch). If the deformation is severe, the guardrail panels need to be replaced with reusable ones.

[0060] This embodiment ensures that those skilled in the art can fully reproduce the technical solution of this utility model through detailed component selection, dimensional parameters, assembly process and maintenance plan; at the same time, by reusing waste guardrail panels, fully mechanical adjustment and multiple anti-loosening reinforcement designs, it specifically solves the defects of existing windproof facilities such as "high maintenance cost, poor ventilation and adjustment and weak wind resistance stability", fully demonstrating the practicality and innovation of this utility model.

[0061] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A double-layer windproof grid with adjustable ventilation coefficient, comprising a base and a windproof mechanism disposed on the top of the base, characterized in that, The windproof mechanism includes: Two uprights are arranged at intervals on the top of the base along a predetermined protection direction; Multiple windproof components are arranged sequentially along the length of the column, and the spacing between two adjacent windproof components is adjustable; each windproof component is rotatably coupled with the column to achieve an adjustable installation angle of the multiple windproof components on the column, thereby adjusting the wind permeability coefficient of the windproof grid.

2. The adjustable ventilation coefficient double-layer windproof grid according to claim 1, characterized in that, The windproof component includes: The connector is rotatably sleeved on the outer ring of the column and can rotate circumferentially around the axis of the column; The corrugated guardrail panel is fixedly connected to the outside of the connector and rotates synchronously with the connector; A locking component, assembled on the connector, has a locked state and an unlocked state: when in the locked state, the locking component locks the relative position of the connector and the post to fix the angle of the wave-shaped guardrail; when in the unlocked state, the locking component releases the lock on the connector and the post, allowing the connector to rotate around the post to adjust the angle of the wave-shaped guardrail.

3. The adjustable ventilation coefficient double-layer windproof grid according to claim 2, characterized in that, Also includes: A rubber sleeve is fitted onto the inner circumference of the connector, and the inner side of the rubber sleeve is tightly fitted to the outer circumference of the column. This is used to buffer the contact stress between the connector and the column when they rotate, and to reduce the rigid wear of both. A pad is provided on the inner side of the corrugated guardrail and is arranged corresponding to the assembly position of the locking component. The locking component passes through the pad and the corrugated guardrail in sequence and is then fixedly connected to the connector. The pad can disperse the local compressive stress on the corrugated guardrail when the locking component is locked, thus preventing the corrugated guardrail from deforming.

4. The adjustable ventilation coefficient double-layer windproof grid according to claim 1, characterized in that, Also includes: A connecting mechanism is used to connect two columns spaced apart on the top of the base and to adjust the spacing between the two columns. The connecting mechanism includes a connecting component and an adjusting component. There are two connecting components, each corresponding to and fixedly connected to one of the two columns. The two ends of the adjusting component are rotatably connected to the two connecting components. By rotating the adjustment component, the length of the adjustment component itself can be changed, thereby driving the two columns to move closer or further apart on the top of the base, so as to adjust the distance between the two columns.

5. The adjustable ventilation coefficient double-layer windproof grid according to claim 4, characterized in that, The adjustment component includes: A double-threaded rod, the two ends of which are threaded into the two connecting components respectively, and the threads at the two ends of the double-threaded rod are in opposite directions; An operating part is fixedly connected to the middle of the double-helix threaded rod and is used to provide rotational driving force. Rotating the operating part can drive the double-helix threaded rod to rotate around its own axis, and then drive the two connecting components to move synchronously in opposite directions through the thread transmission of opposite directions. The connecting assembly includes two threaded tubes. One end of each threaded tube is adapted to be threadedly engaged with both ends of the double-threaded rod, and the other end is fixedly connected to the two columns respectively.

6. The adjustable ventilation coefficient double-layer windproof grid according to claim 1, characterized in that, Also includes: A reinforcement component is used to enhance the wind resistance stability of two columns spaced apart at the top of the base, thereby reinforcing the two columns. The reinforcement assembly includes a rotating component and a stay cable. The rotating component is rotatably connected to the top of either of the two columns and can rotate circumferentially around the column axis. One end of the stay cable is fixedly connected to the rotating component, and the other end is fixedly connected to the ground through an anchoring structure, forming an oblique tensile support for the column.

7. The adjustable ventilation coefficient double-layer windproof grid according to claim 6, characterized in that, The anchoring structure includes: One end of the cable anchor is fixedly connected to the end of the stay cable away from the rotating component; The clamp rod is fixedly connected to the end of the cable anchor rod away from the inclined cable, forming an integrated anchor rod-clamp rod load-bearing structure; Cement is poured and buried at a predetermined depth underground. The lower section of the cable anchor rod and the clamp rod are integrally embedded and fixed inside the poured cement. Through the gripping force and friction between the poured cement and the underground soil, the cable is anchored and fixed, and the tension of the cable is transmitted to the underground soil.

8. The adjustable ventilation coefficient double-layer windproof grid according to claim 1, characterized in that, The bottom of the column and the top of the base are connected by a threaded joint.

9. The adjustable ventilation coefficient double-layer windproof grid according to claim 8, characterized in that, Also includes: The positioning mechanism is used to reinforce the threaded connection between the two columns spaced apart on the top of the base and the base to prevent loosening and to prevent relative rotation of the threaded pair. The positioning mechanism includes a driving component, a positioning component, and a limiting component, wherein: the fixed part of the driving component is fixedly connected to the base, and the power output end of the driving component is connected to the positioning component in a transmission manner; one end of the limiting component is fixedly connected to the column, and the other end is slidably engaged with the positioning component to limit the movement trajectory of the positioning component.

10. The adjustable ventilation coefficient double-layer windproof grid according to claim 9, characterized in that, The driving component can drive the positioning component to move along the trajectory defined by the limiting component until the positioning component covers and abuts the threaded connection between the column and the base. It mechanically blocks external foreign objects from entering the threaded pair and restricts the relative rotation of the threaded pair by abutting and limiting, thereby achieving the anti-loosening function.

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