A wind vibration analysis device for a large cantilevered multi-curved canopy

Abstract

This invention discloses a wind vibration analysis device for a large cantilevered multi-curved canopy, belonging to the field of building component testing technology. The device includes an auxiliary mechanism, a fatigue value testing mechanism, and a wind vibration testing mechanism. The fatigue value testing mechanism is installed on the auxiliary mechanism near its center, and the wind vibration testing mechanism is installed on the auxiliary mechanism near its front end. The canopy to be analyzed is slidably mounted on the auxiliary mechanism, and testing is performed by the fatigue value testing mechanism and the wind vibration testing mechanism. This wind vibration analysis device is scientifically designed, ingeniously structured, simple to operate, and convenient to use. Through multi-angle and multi-intensity wind tests, it ensures the diversity of its analytical data, making the wind vibration load data more accurate. This provides accurate data for canopy designers to select appropriate wind vibration coefficients, ensuring the compliance and safety of canopy designs.

Description

Technical Field

[0001] This invention belongs to the field of building component testing technology, specifically a wind vibration analysis device for a large cantilevered multi-curved canopy. Background Technology

[0002] Wind vibration analysis of awnings is conducted to ensure their structural safety and stability under windy or rainy weather. By assessing the impact of wind loads on the vibration of the awning, structural fatigue or damage caused by wind vibration can be prevented, thereby optimizing the design and meeting building codes and safety standards.

[0003] When performing wind-induced vibration analysis on awnings, wind vibration analysis devices are used. Existing wind vibration analysis devices typically simulate wind fields to study the wind-induced vibration response of awnings. However, actual wind fields are complex and variable, not steady flows, but random loads containing turbulent and fluctuating components, including different wind directions, wind speed distributions, and turbulent characteristics. This leads to insufficient data collection, resulting in deviations between the analysis results and the actual situation, and makes it difficult to intuitively understand the maximum load-bearing amplitude of the awning.

[0004] With the rapid development of modern building technology, large steel cantilevered curved canopies have been widely used in public facilities such as exhibition halls, hospitals, and schools due to their unique shapes and excellent functionality. However, the unique cantilever structure and curved surface design of these canopies make their natural frequency more likely to approach the pulsating frequency of the wind, leading to resonance and a significant dynamic response. This makes their dynamic response under wind loads particularly complex, easily causing structural vibration and fatigue failure, thus affecting the structural safety and user comfort.

[0005] Therefore, it is urgent to design a new type of wind vibration analysis device to perform wind vibration analysis on large steel structure canopies with large cantilevered curved surfaces to ensure their safety and stability under extreme weather conditions. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the prior art and to provide a wind vibration analysis device for a large cantilevered multi-curved canopy.

[0007] This invention is achieved through the following technical solution:

[0008] A wind vibration analysis device for a large cantilevered multi-curved canopy includes an auxiliary mechanism, a fatigue value testing mechanism, and a wind vibration testing mechanism.

[0009] The auxiliary mechanism includes a movable platform that slides along the front-back direction, a support platform that is vertically fixed on the movable platform, and a placement platform for fixing the awning that is vertically fixed on the front side of the support platform.

[0010] The fatigue value testing mechanism is installed on the auxiliary mechanism near its center. The fatigue value testing mechanism includes a horizontal plate that slides in the vertical direction. A dual-axis motor is installed on the horizontal plate. A connecting rod is connected to the output shaft of the dual-axis motor. An eccentric wheel is rotatably connected to the end of the connecting rod.

[0011] The wind vibration testing mechanism is installed on the auxiliary mechanism near its front end. The wind vibration testing mechanism includes a fan and an arc-shaped gear rail. The fan is slidably installed on the arc-shaped gear rail. A drive motor is installed on the fan. A gear three is installed on the output shaft of the drive motor. The gear three meshes with the arc-shaped gear rail.

[0012] Furthermore, the auxiliary mechanism also includes a base, a front support plate, a rear support plate, two lead screws, two gears, two lead screw motors, two movable seats, and two sliding columns. The front and rear support plates are vertically fixed to the front and rear ends of the base, respectively. The two lead screws are rotatably mounted between the two ends of the front and rear support plates, respectively. The two gears are fixedly mounted on the two lead screws near the rear support plate. The two lead screw motors are mounted on the outer ends of the rear support plate, and the output shafts of the two lead screw motors are fixedly connected to the ends of the two lead screws. Two movable seats are threadedly connected to two lead screws, and a sliding sleeve is fixed to the inner end of each movable seat. Two sliding columns are vertically slidably connected to the two sliding sleeves, and the moving platform is horizontally fixed to the bottom of the two sliding columns. A weighing groove is provided on the base near its rear end, and the front and rear sides of the weighing groove are designed with buffer slopes. A weighing instrument is installed in the weighing groove. Rollers are installed on both sides of the front end and both sides of the rear end of the moving platform. When the moving platform moves to the position of the weighing groove, it will fall into the weighing groove and be placed on the weighing instrument.

[0013] Furthermore, the fatigue value testing mechanism also includes two front connecting seats, two rear connecting seats, two worm gears, two gears, two connecting plates, two slide rails, two lead screws, two worm gears, and two movable seats. The two front connecting seats are fixed to the ends of the front support plate, and the two rear connecting seats are fixed to the ends of the rear support plate. The two worm gears are rotatably mounted between the front and rear connecting seats on the same side. The two gears are fixedly mounted on the two worm gears near the rear connecting seats, and mesh with their corresponding gears. The two connecting plates are fixedly connected to both sides of the base. The two slide rails are vertically fixed to the two connecting plates, and the two lead screws are vertically rotatably connected to the two connecting plates. On the plate, two lead screws are located between two slide rails. Two worm gears are fixedly installed on the two lead screws near the connecting plate. The two worm gears are meshed with the worm gears on their respective sides. Two movable seats are threadedly connected to the two lead screws. A slider is fixed to the outer end of each of the two movable seats. The two sliders are vertically slidably connected to the slide rails on their respective sides. A horizontal plate is vertically slidably connected between the inner ends of the two movable seats. A fixed platform is fixed in the middle of the horizontal plate. A dual-axis motor is mounted on the fixed platform. The two output shafts of the dual-axis motor are located on both sides of the fixed platform. A connecting rod is connected to each of the two output shafts of the dual-axis motor. An eccentric wheel is rotatably connected to the end of each connecting rod.

[0014] Furthermore, the wind vibration testing mechanism includes a fan, two arc-shaped toothed rails, two arc-shaped guide rails, two drive motors, and two gears. The bottom ends of the two arc-shaped toothed rails are fixedly connected to the front end of the base, and the arc openings of the two arc-shaped toothed rails face backward. The two arc-shaped guide rails are fixed to the outer surfaces of the two arc-shaped toothed rails. The fan is located inside the arc openings of the two arc-shaped toothed rails, and the fan's air outlet direction faces backward. A support rod is fixedly connected to each end of the fan, and the other ends of the two support rods are fixedly connected to the two drive motors. A fixed seat is fixedly connected to the other ends of the two drive motors. A set of locking pulleys is rotatably installed on the inner surfaces of the two fixed seats. The two sets of locking pulleys slide and lock onto the two arc-shaped guide rails. The two gears are respectively installed on the output shafts of the two drive motors, and the two gears mesh with the two arc-shaped toothed rails.

[0015] Furthermore, a limiting rod is fixedly connected between each end of the front support plate and the rear support plate. The two limiting rods are located directly below the two lead screws, and the two movable seats are slidably connected to the two limiting rods.

[0016] Furthermore, limit blocks are installed at the top of each of the two lead screws.

[0017] Furthermore, a vertical groove is provided on the inner end of each of the two movable seats 2, and a slider 2 is fixed at each end of the horizontal plate. The two sliders 2 at both ends of the horizontal plate are slidably connected in the vertical grooves on the two movable seats 2.

[0018] Furthermore, an anemometer is installed at the air outlet of the fan.

[0019] Furthermore, each set of locking pulleys includes two pairs of locking pulleys, one in front and one in back, which are slidably locked onto the front and rear end faces of the arc-shaped guide rail. Each pair of locking pulleys includes a connecting post, which is connected to a fixed base. Pulley 1 and Pulley 2 are rotatably mounted on the connecting post, and Pulley 1 and Pulley 2 are slidably locked onto both sides of the end face of the arc-shaped guide rail.

[0020] Furthermore, a reinforcing plate is fixedly connected between the top ends of the two curved toothed rails.

[0021] In use, the device of this invention fixes the canopy to be analyzed for wind vibration on a support platform, i.e., a placement platform. An auxiliary mechanism moves the canopy to the measurement position. During movement, a fan blows air onto the canopy at different distances, angles, and intensities. An anemometer monitors the wind speed in real time. Simultaneously, a drive motor rotates gear three, causing it to move on the surface of an arc-shaped gear rail. A support rod drives the fan to perform tests at different angles. Meanwhile, pulley one on the fixed base is connected to pulley two via a connecting column and clamps the arc-shaped guide rail. As gear three rotates and shifts, it assists in the movement, improving the stability of the device. This invention ensures the diversity of analytical data. By adjusting the wind intensity with the fan and the blowing angle with the arc-shaped gear, the vibration of the canopy under different wind conditions can be observed, and data distribution diagrams can be plotted, thereby improving the adaptability of the device.

[0022] The wind vibration analysis device of this invention is scientifically designed, ingeniously structured, simple to operate, and easy to use. Through its multi-angle and multi-intensity wind blowing tests, it ensures the diversity of its analysis data, making its wind vibration load data more accurate. This provides accurate data for awning designers to select appropriate wind vibration coefficients, ensuring the compliance and safety of awning designs. Attached Figure Description

[0023] The accompanying drawings, which are provided to further illustrate the invention and form part of this application, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention.

[0024] Figure 1 This is a side view of the structure of the device of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the device of the present invention viewed from the front.

[0026] Figure 3 This is a structural schematic diagram of the device of the present invention viewed from the rear.

[0027] Figure 4 This is a partial structural schematic diagram of the fatigue value testing mechanism in the device of the present invention.

[0028] Figure 5 This is a schematic diagram of the wind vibration testing mechanism in the device of the present invention.

[0029] Figure 6 for Figure 5 A magnified structural diagram of part A in the middle.

[0030] In the diagram: 1. Canopy; 2. Auxiliary mechanism; 201. Base; 202. Front support plate; 203. Sliding sleeve; 204. Lead screw motor; 205. Gear 1; 206. Lead screw 1; 207. Limiting rod; 208. Movable seat 1; 209. Weighing groove; 210. Sliding column; 211. Moving platform; 212. Rotary wheel; 213. Support platform; 214. Rear support plate; 215. Placement platform; 216. Weighing instrument; 217. Triangular fixing frame; 3. Fatigue value testing mechanism; 301. Front connecting seat; 302. Gear 2; 303. Worm gear; 304. Connecting plate; 305. Slide rail; 306. 307. Turbine; 308. Lead screw II; 309. Limiting block; 310. Slider I; 311. Movable seat II; 312. Slider II; 313. Horizontal plate; 314. Fixed platform; 315. Dual-axis motor; 316. Connecting rod; 317. Eccentric wheel; 318. Rear connecting seat; 4. Vertical slide groove; 4. Wind vibration testing mechanism; 401. Arc-shaped gear rail; 402. Arc-shaped guide rail; 403. Gear III; 404. Drive motor; 405. Support rod; 406. Fan; 407. Fixed seat; 408. Pulley I; 409. Connecting column; 410. Pulley II; 411. Anemometer; 412. Reinforcing plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0033] like Figures 1 to 6 As shown, this embodiment provides a wind vibration analysis device for a large cantilevered multi-curved canopy, including an auxiliary mechanism 2, a fatigue value testing mechanism 3, and a wind vibration testing mechanism 4. The auxiliary mechanism 2 includes a movable platform 211 that slides along the front-rear direction, a support platform 213 that is vertically fixed on the movable platform 211, and a placement platform 215 for fixing the canopy 1 that is vertically fixed on the front side of the support platform 213. The fatigue value testing mechanism 3 is installed on the auxiliary mechanism 2 near its middle part, and the fatigue value testing mechanism 3 includes a horizontal plate 312 that slides along the vertical direction. A dual-axis motor 314 is mounted on plate 312. A connecting rod 315 is connected to the output shaft of the dual-axis motor 314. An eccentric wheel 316 is rotatably connected to the end of the connecting rod 315. The wind vibration testing mechanism 4 is mounted on the auxiliary mechanism 2 near its front end. The wind vibration testing mechanism 4 includes a fan 406 and an arc-shaped gear rail 401. The fan 406 is slidably mounted on the arc-shaped gear rail 401. A drive motor 404 is mounted on the fan 406. A gear 403 is mounted on the output shaft of the drive motor 404. The gear 403 meshes with the arc-shaped gear rail 401.

[0034] The components of the device in this embodiment will be described in more detail below:

[0035] Auxiliary mechanism 2 includes a base 201, a front support plate 202, a rear support plate 214, a moving platform 211, a support table 213, two lead screws 206, two gears 205, two lead screw motors 204, two movable seats 208, and two sliding columns 210. The front support plate 202 and the rear support plate 214 are vertically fixed to the front and rear ends of the base 201, respectively. The two lead screws 206 are rotatably mounted between the two ends of the front support plate 202 and the rear support plate 214, respectively. The two gears 205 are fixedly mounted on the two lead screws 206 near the rear support plate 214, respectively. The two lead screw motors 204 are mounted on the outer ends of the rear support plate 214, and the output shafts of the two lead screw motors 204 are... The two movable seats 208 are threadedly connected to the ends of the two lead screws 206, and a sliding sleeve 203 is fixed to the inner end of each of the two movable seats 208. The two sliding columns 210 are vertically slidably connected to the two sliding sleeves 203. The moving platform 211 is horizontally fixed to the bottom end of the two sliding columns 210. The support platform 213 is vertically fixed to the moving platform 211. The front side of the support platform 213 is vertically fixed with a placement platform 215 for fixing the canopy 1. The canopy 1 is fixed in the following way: a triangular fixing bracket 217 is provided on each side of the front side of the support platform 213. The triangular fixing bracket 217 has a strip-shaped fixing groove, and a fastening bolt passes through the strip-shaped fixing groove. The fastening bolts are threadedly connected to the support platform 213. After loosening the fastening bolts, the triangular fixing bracket 217 can slide up and down relative to the support platform 213 through the strip-shaped fixing groove. When fixing the awning 1, first place the awning 1 in the middle position of the placement platform 215, then loosen the fastening bolts and adjust the vertical position of the triangular fixing bracket 217 on the support platform 213 so that the bottom end of the triangular fixing bracket 217 is engaged with the awning 1. After tightening the fastening bolts, the awning 1 can be stably fixed between the two triangular fixing brackets 217 and the placement platform 215. The triangular fixing bracket 217 is designed to be slidable to fix awnings 1 of different sizes, thereby improving the applicability of the device. A groove is provided on the base 201 near its rear end. A weighing trough 209 is provided through the base 201. A weighing instrument 216 is installed inside the weighing trough 209. When the moving platform 211 moves to the position of the weighing trough 209, it will fall into the weighing trough 209 and be placed on the weighing instrument 216. The weighing instrument 216 weighs the canopy 1 to obtain the weight data of the canopy 1 under different wind conditions, which is convenient for calculating the wind vibration coefficient and understanding the role of its own inertial force in the wind vibration process. The front and rear sides of the weighing trough 209 are designed with buffer slopes to make it easier for the moving platform 211 to enter and exit the weighing trough 209. The front and rear sides of the moving platform 211 are equipped with casters 212, which make the movement of the moving platform 211 easier and smoother.A limiting rod 207 is fixedly connected between each end of the front support plate 202 and the rear support plate 214. The two limiting rods 207 are located directly below the two lead screws 206. Two movable seats 208 are slidably connected to the two limiting rods 207. The limiting rods 207 make the movement of the movable seats 208 more stable.

[0036] The fatigue testing mechanism 3 includes two front connecting seats 301, two rear connecting seats 317, two worm gears 303, two gears 302, two connecting plates 304, two slide rails 305, two lead screws 307, two worm gears 306, and two movable seats 310. The two front connecting seats 301 are fixed to the two ends of the front support plate 202, and the two rear connecting seats 317 are fixed to the two ends of the rear support plate 214. The two worm gears 303 are rotatably mounted between the front connecting seats 301 and the rear connecting seats 317 on the same side. The two gears 303... Two gears 302 are fixedly installed on the two worm gears 303 near the rear connecting seat 317. Two gears 302 mesh with their corresponding gears 205 on their respective sides. Two connecting plates 304 are fixedly connected to both sides of the base 201. Two slide rails 305 are vertically fixed to the two connecting plates 304. Two lead screws 307 are vertically rotatably connected to the two connecting plates 304, located between the two slide rails 305. Limit blocks 308 are installed at the top of each of the two lead screws 307. Two worm gears 306 are fixedly installed on the two... On the lead screw 307, near the connecting plate 304, two worm gears 306 are respectively engaged with the corresponding worm gears 303. Two movable seats 310 are threadedly connected to the two lead screws 307. A slider 309 is fixed to the outer end of each movable seat 310. The two sliders 309 are vertically slidably connected to the corresponding slide rails 305. A horizontal plate 312 is vertically slidably connected between the inner ends of the two movable seats 310. Specifically, a vertical groove 312 is formed on the inner end of each movable seat 310. 18. A slider 311 is fixed at each end of the horizontal plate 312. The two sliders 311 at both ends of the horizontal plate 312 are slidably connected in the vertical grooves 318 on the two movable seats 310. A fixed platform 313 is fixed at the middle position of the horizontal plate 312. A dual-axis motor 314 is installed on the fixed platform 313. The two output shafts of the dual-axis motor 314 are located on both sides of the fixed platform 313. A connecting rod 315 is connected to each of the two output shafts of the dual-axis motor 314. An eccentric wheel 316 is rotatably connected to the end of each of the two connecting rods 315.

[0037] The wind vibration testing mechanism 4 includes a fan 406, two arc-shaped toothed rails 401, two arc-shaped guide rails 402, two drive motors 404, and two gears 403. The bottom ends of the two arc-shaped toothed rails 401 are fixedly connected to the front end of the base 201, and a reinforcing plate 412 is fixedly connected between the top ends of the two arc-shaped toothed rails 401. The arc openings of the two arc-shaped toothed rails 401 are set to face backward. The two arc-shaped guide rails 402 are fixedly fixed to the outer sides of the two arc-shaped toothed rails 401. The fan 406 is located inside the arc openings of the two arc-shaped toothed rails 401. The air outlet direction of the fan 406 is set to face backward. An anemometer 411 is installed at the air outlet of the fan 406. A support rod 405 is fixedly connected to each end of the fan 406. The other ends of the two support rods 405 are fixedly connected to the two drive motors 404. The other end of the drive motor 404 is fixedly connected to a fixed base 407. A set of locking pulleys is rotatably installed on the inner side of each of the two fixed bases 407. The two sets of locking pulleys are slidably locked onto the two arc-shaped guide rails 402. Specifically, each set of locking pulleys includes two pairs of locking wheels, front and rear, which are slidably locked onto the front and rear end faces of the arc-shaped guide rail 402. Each pair of locking wheels includes a connecting post 409, which is connected to the fixed base 407. A pulley 408 and a pulley 410 are rotatably installed on the connecting post 409. The pulley 408 and the pulley 410 are rotatably locked onto the end faces of the arc-shaped guide rail 402. Two gears 403 are respectively installed on the output shafts of the two drive motors 404 and are meshed with the two arc-shaped gear rails 401.

[0038] The method of using the wind vibration analysis device for the large cantilevered multi-curved canopy described in this embodiment includes:

[0039] 1) Install the canopy 1 on the surface of the placement platform 215 and fix it stably with the triangular fixing bracket 217. When the lead screw motor 204 drives the lead screw 206 to rotate, the lead screw 206 drives the movable seat 208 to move in the direction of the wind vibration testing mechanism 4. The limit rod 207 limits the movable seat 208, so that the movable seat 208 can stably drive the moving platform 211 to move forward. The rotating wheel 212 assists the moving platform 211 to move. When the moving platform 211 moves to the position of the weighing groove 209, the sliding column 210 slides downward relative to the sliding sleeve 203 and cooperates with the rotating wheel 212, so that the moving platform 211 smoothly enters the weighing groove. Inside the weighing trough 209, the weighing instrument 216 measures the weight of the canopy 1, which is convenient for calculating the wind vibration coefficient and understanding the effect of its own inertial force during the wind vibration process. After the weighing trough 209 measures the weight, the movable seat 208 continues to move through the lead screw 206. When the rotating wheel 212 contacts the buffer slope of the weighing trough 209, the sliding column 210 slides upward relative to the sliding sleeve 203 and cooperates with the rotating wheel 212, so that the moving platform 211 can be smoothly moved out of the weighing trough 209. The setting of the buffer slope + rotating wheel 212 prevents the moving platform 211 from getting stuck when entering and exiting the weighing trough 209, thus improving the adaptability of the device.

[0040] 2) The auxiliary mechanism 2 continues to drive the canopy 1 forward. When the lead screw 206 rotates, the gear 205 on the surface of the lead screw 206 drives the gear 302 meshing with it to rotate. At this time, the worm 303 rotates and drives the turbine 306 meshing with the surface of the worm 303 to rotate, so that the lead screw 307 on the surface of the connecting plate 304 rotates and drives the movable seat 310 to move downward. The limiting block 308 limits the height of the movable seat 310. At this time, the slider 309 assists the movable seat 310 to move downward along the slide rail 305. When the auxiliary mechanism 2 drives the canopy 1 to the bottom of the fatigue value testing mechanism 3, the movable seat 310 drives the horizontal plate 312 to fall onto the surface of the canopy 1.

[0041] 3) The canopy 1 is tested by wind vibration testing mechanism 4, that is, the canopy 1 is tested by wind blower 406, the wind speed blown by wind blower 406 is monitored in real time by anemometer 411, and at the same time, the gear 3 403 is rotated by drive motor 404, so that gear 3 403 moves on the surface of arc-shaped toothed rail 401. The fan 406 is driven by support rod 405 to perform tests at different angles. At the same time, pulley 1 408 on fixed base 407 is connected to pulley 2 410 through connecting column 409 and clamps arc-shaped guide rail 402. When gear 3 403 rotates and moves, it assists in moving, which improves the stability of the device, ensures the diversity of analysis data, and improves the adaptability of the device.

[0042] 4) Vibration test of canopy 1 is carried out by fatigue value testing mechanism 3. Dual-axis motor 314 on fixed platform 313 drives connecting rod 315 to rotate, causing eccentric wheel 316 to rotate and generate vibration, thereby causing canopy 1 to vibrate. When the natural frequency of canopy 1 structure is close to the pulsating frequency of the fan 406 blowing air, canopy 1 will resonate. At this time, canopy 1 reaches the most unfavorable condition. The sliders 311 on both sides of horizontal plate 312 move up and down in the vertical grooves 318 on movable seat 310, so that the amplitude of canopy 1 will not be affected by the support of movable seat 310. By collecting blowing data and eccentric wheel rotation data, the most unfavorable condition of the simulation data is found, which improves the adaptability of the device.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind vibration analysis device for a large cantilevered multi-curved canopy, characterized in that: It includes auxiliary mechanisms (2), fatigue value testing mechanisms (3) and wind vibration testing mechanisms (4); The auxiliary mechanism (2) includes a movable platform (211) that slides along the front-back direction, a support platform (213) that is vertically fixed on the movable platform (211), and a placement platform (215) for fixing the awning (1) that is vertically fixed on the front side of the support platform (213); the auxiliary mechanism (2) also includes a base (201), a front support plate (202), a rear support plate (214), two lead screws (206), two gears (205), two lead screw motors (204), and two movable seats. One (208), two sliding columns (210); the front support plate (202) and the rear support plate (214) are respectively vertically fixed to the front end and the rear end of the base (201), two lead screws (206) are respectively rotatably installed between the two ends of the front support plate (202) and the rear support plate (214), two gears (205) are respectively fixedly installed on the two lead screws (206) at positions near the rear support plate (214), and two lead screw motors (204) are respectively installed on the rear support plate (201). 14) The outer ends of the two screw motors (204) are fixedly connected to the ends of the two screws (206) respectively. The two movable seats (208) are threadedly connected to the two screws (206) respectively. The inner ends of the two movable seats (208) are fixed with a sliding sleeve (203) respectively. The two sliding columns (210) are vertically slidably connected in the two sliding sleeves (203) respectively. The moving platform (211) is horizontally fixed at the bottom end of the two sliding columns (210); base A weighing trough (209) is provided on the back end of the (201) and passes through the base (201). The front and rear sides of the weighing trough (209) are designed with buffer slopes. A weighing instrument (216) is installed in the weighing trough (209). The front and rear sides of the moving platform (211) are equipped with casters (212). When the moving platform (211) moves to the position of the weighing trough (209), it will fall into the weighing trough (209) and be placed on the weighing instrument (216). The fatigue value testing mechanism (3) is installed on the auxiliary mechanism (2) near its middle part. The fatigue value testing mechanism (3) includes a horizontal plate (312) that slides in the vertical direction. A dual-axis motor (314) is installed on the horizontal plate (312). A connecting rod (315) is connected to the output shaft of the dual-axis motor (314). An eccentric wheel (316) is rotatably connected to the end of the connecting rod (315). The fatigue value testing mechanism (3) also includes two front connecting seats (301), two rear connecting seats (317), two worm gears (303), two gears (302), two connecting plates (304), two slide rails (305), and two lead screws (306). 307), two worm gears (306), two movable seats (310); two front connecting seats (301) are fixed to the two ends of the front support plate (202), two rear connecting seats (317) are fixed to the two ends of the rear support plate (214), two worms (303) are rotatably installed between the front connecting seats (301) and the rear connecting seats (317) on the same side, two gears (302) are fixedly installed on the two worms (303) near the rear connecting seats (317), and the two gears (302) mesh with the gears (205) on their corresponding sides, and two connecting plates (304) are respectively Fixedly connected to both sides of the base (201), two slide rails (305) are vertically fixed to two connecting plates (304) respectively, two lead screws (307) are vertically rotatably connected to the two connecting plates (304) respectively, the two lead screws (307) are located between the two slide rails (305), two worm gears (306) are fixedly installed on the two lead screws (307) near the connecting plates (304) respectively, the two worm gears (306) are respectively meshed with the worm (303) on their respective sides, two movable seats (310) are respectively threaded to the two lead screws (307), the outer ends of the two movable seats (310) are respectively fixed There is a slider 1 (309), and the two sliders 1 (309) are vertically slidably connected to the slide rails (305) on their respective sides. The horizontal plate (312) is vertically slidably connected between the inner ends of the two movable seats 2 (310). A fixed platform (313) is fixed at the middle position of the horizontal plate (312). The dual-axis motor (314) is mounted on the fixed platform (313). The two output shafts of the dual-axis motor (314) are located on both sides of the fixed platform (313). A connecting rod (315) is connected to each of the two output shafts of the dual-axis motor (314). An eccentric wheel (316) is rotatably connected to the end of each of the two connecting rods (315). The wind vibration testing mechanism (4) is installed on the auxiliary mechanism (2) near its front end. The wind vibration testing mechanism (4) includes a fan (406) and an arc-shaped toothed rail (401). The fan (406) is slidably installed on the arc-shaped toothed rail (401). A drive motor (404) is installed on the fan (406). A gear three (403) is installed on the output shaft of the drive motor (404). The gear three (403) meshes with the arc-shaped toothed rail (401).

2. The wind vibration analysis device for a large cantilevered multi-curved canopy according to claim 1, characterized in that: The wind vibration testing mechanism (4) includes a fan (406), two arc-shaped toothed rails (401), two arc-shaped guide rails (402), two drive motors (404), and two gears (403); the bottom ends of the two arc-shaped toothed rails (401) are fixedly connected to the front end of the base (201), the arc openings of the two arc-shaped toothed rails (401) are set facing backward, the two arc-shaped guide rails (402) are fixed on the outer side of the two arc-shaped toothed rails (401), the fan (406) is located inside the arc openings of the two arc-shaped toothed rails (401), the air outlet direction of the fan (406) is set facing backward, and the fan (406)'s... A support rod (405) is fixedly connected to each end. The other ends of the two support rods (405) are fixedly connected to two drive motors (404). The other ends of the two drive motors (404) are fixedly connected to a fixed seat (407). A set of snap-fit ​​pulleys is rotatably installed on the inner side of the two fixed seats (407). The two sets of snap-fit ​​pulleys are slidably locked on two arc-shaped guide rails (402). Two gears (403) are installed on the output shafts of the two drive motors (404). The two gears (403) are meshed with the two arc-shaped gear rails (401).

3. The wind vibration analysis device for a large cantilevered multi-curved canopy according to claim 1, characterized in that: A limiting rod (207) is fixedly connected between the two ends of the front support plate (202) and the rear support plate (214). The two limiting rods (207) are located directly below the two lead screws (206), and the two movable seats (208) are slidably connected to the two limiting rods (207).

4. The wind vibration analysis device for a large cantilevered multi-curved canopy according to claim 1, characterized in that: Limit blocks (308) are installed at the top of the two lead screws (307).

5. The wind vibration analysis device for a large cantilevered multi-curved canopy according to claim 3, characterized in that: A vertical slide groove (318) is opened on the inner end of each of the two movable seats (310), and a slider (311) is fixed at each end of the horizontal plate (312). The two sliders (311) at both ends of the horizontal plate (312) are slidably connected in the vertical slide groove (318) on the two movable seats (310).

6. The wind vibration analysis device for a large cantilevered multi-curved canopy according to claim 2, characterized in that: An anemometer (411) is installed at the air outlet of the fan (406).

7. The wind vibration analysis device for a large cantilevered multi-curved canopy according to claim 2, characterized in that: Each set of locking pulleys includes two pairs of locking wheels, one in front and one in back. The two pairs of locking wheels are slidably locked onto the front and rear end faces of the arc-shaped guide rail (402). Each pair of locking wheels includes a connecting column (409), which is connected to the fixed seat (407). A first pulley (408) and a second pulley (410) are rotatably mounted on the connecting column (409). The first pulley (408) and the second pulley (410) are respectively rolled and locked onto both sides of the end face of the arc-shaped guide rail (402).

8. The wind vibration analysis device for a large cantilevered multi-curved canopy according to claim 2, characterized in that: A reinforcing plate (412) is fixedly connected between the top ends of the two arc-shaped toothed rails (401).

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